Index: theoryview/perspectives/theory/basepage.py
===================================================================
--- theoryview/perspectives/theory/basepage.py	(revision 4cf744321905688e6bf8d037d30de06a365b24e2)
+++ theoryview/perspectives/theory/basepage.py	(revision e071b1c606176d61776b71469db1ade3eb45caa8)
@@ -1922,22 +1922,3 @@
         self._draw_model()
 
-    def on_model_help_clicked(self,event):
-        """
-        #On 'More details' button
-        """
-        from help_panel import  HelpWindow
-        
-        if self.model == None:
-            name = 'FuncHelp'
-        else:
-            name = self.model.origin_name
-
-        frame = HelpWindow(None, -1,  pageToOpen="doc/model_functions.html")    
-        frame.Show(True)
-        if frame.rhelp.HasAnchor(name):
-            frame.rhelp.ScrollToAnchor(name)
-        else:
-           msg= "Model does not contains an available description "
-           msg +="Please try searching in the Help window"
-           wx.PostEvent(self.parent, StatusEvent(status = msg ))                    
-                
+  
Index: theoryview/perspectives/theory/help_panel.py
===================================================================
--- theoryview/perspectives/theory/help_panel.py	(revision 0277d084dedd5afcedd8dd067ab01cf0fee53b12)
+++ theoryview/perspectives/theory/help_panel.py	(revision e071b1c606176d61776b71469db1ade3eb45caa8)
@@ -106,13 +106,13 @@
             <body>
             <ul>
-            <li><a href ="doc/change_scale_help.html" target ="showframe">Change scale</a><br></li>
-            <li><a href ="doc/reset_Graph_help.html" target ="showframe">Graph Help</a><br></li>
-            <li><a href ="doc/load_data_help.html" target ="showframe">Load a File</a><br></li>
-            <li><a href ="doc/simultaneous_fit_help.html" target ="showframe">Simultaneous Fit</a><br></li>
-            <li><a href ="doc/single_fit_help.html" target ="showframe">Single Fit</a><br></li>
-            <li><a href ="doc/model_use_help.html" target ="showframe">Visualize Model</a><br></li>
-            <li><a href ="doc/averaging_help.html" target ="showframe">Data Averaging</a><br></li>
-            <li><a href ="doc/sld_calculator_help.html" target ="showframe">SLD Calculator</a><br></li>
-            <li><a href ="doc/model_functions.html" target ="showframe">Model Functions</a><br></li>
+            <li><a href ="media/change_scale_help.html" target ="showframe">Change scale</a><br></li>
+            <li><a href ="media/reset_Graph_help.html" target ="showframe">Graph Help</a><br></li>
+            <li><a href ="media/load_data_help.html" target ="showframe">Load a File</a><br></li>
+            <li><a href ="media/simultaneous_fit_help.html" target ="showframe">Simultaneous Fit</a><br></li>
+            <li><a href ="media/single_fit_help.html" target ="showframe">Single Fit</a><br></li>
+            <li><a href ="media/model_use_help.html" target ="showframe">Visualize Model</a><br></li>
+            <li><a href ="media/averaging_help.html" target ="showframe">Data Averaging</a><br></li>
+            <li><a href ="media/sld_calculator_help.html" target ="showframe">SLD Calculator</a><br></li>
+            <li><a href ="media/model_functions.html" target ="showframe">Model Functions</a><br></li>
             </ul>
             </body>
@@ -146,5 +146,5 @@
         """
         #link= "doc/modelfunction.html"
-        self.rhelp.LoadPage("doc/modelfunction.html")
+        self.rhelp.LoadPage("media/modelfunction.html")
         
     def OnLinkClicked(self, event):
Index: theoryview/perspectives/theory/model_panel.py
===================================================================
--- theoryview/perspectives/theory/model_panel.py	(revision 693500af69de6a393c3782311b70163ad8699b5b)
+++ theoryview/perspectives/theory/model_panel.py	(revision e071b1c606176d61776b71469db1ade3eb45caa8)
@@ -441,5 +441,5 @@
         else:
             name = self.model.name
-        frame = HelpWindow(None, -1,  pageToOpen="doc/model_functions.html")    
+        frame = HelpWindow(None, -1,  pageToOpen="media/model_functions.html")    
         frame.Show(True)
         if frame.rhelp.HasAnchor(name):
Index: theoryview/perspectives/theory/old_model_panel.py
===================================================================
--- theoryview/perspectives/theory/old_model_panel.py	(revision 0277d084dedd5afcedd8dd067ab01cf0fee53b12)
+++ 	(revision )
@@ -1,2922 +1,0 @@
-
-
-import wx
-import wx.lib.newevent
-import numpy
-import copy
-import math
-
-import sys, os
-import wx
-import numpy
-import time
-import copy 
-import math
-import string
-from sans.models.dispersion_models import ArrayDispersion, GaussianDispersion
-
-from sans.guicomm.events import StatusEvent   
-from sans.guiframe.utils import format_number
-## event to post model to fit to fitting plugins
-(ModelEventbox, EVT_MODEL_BOX) = wx.lib.newevent.NewEvent()
-
-_BOX_WIDTH = 76
-
-#import basepage
-#from basepage import BasicPage
-#from basepage import PageInfoEvent
-import wx
-import numpy
-import time
-import copy 
-import math
-import string
-from sans.guiframe.utils import format_number,check_float#,check_value 
-from sans.guicomm.events import StatusEvent
-import pagestate
-from pagestate import PageState
-(PageInfoEvent, EVT_PAGE_INFO)   = wx.lib.newevent.NewEvent()
-(PreviousStateEvent, EVT_PREVIOUS_STATE)   = wx.lib.newevent.NewEvent()
-(NextStateEvent, EVT_NEXT_STATE)   = wx.lib.newevent.NewEvent()
-_BOX_WIDTH = 76
-_QMIN_DEFAULT = 0.001
-_QMAX_DEFAULT = 0.13
-_NPTS_DEFAULT = 50
-#Control panel width 
-if sys.platform.count("darwin")==0:
-    PANEL_WIDTH = 450
-    FONT_VARIANT = 0
-    ON_MAC = False
-else:
-    PANEL_WIDTH = 500
-    FONT_VARIANT = 1
-    ON_MAC = True
-class ModelPanel(wx.ScrolledWindow):
-    """
-        FitPanel class contains fields allowing to display results when
-        fitting  a model and one data
-        @note: For Fit to be performed the user should check at least one parameter
-        on fit Panel window.
-  
-    """
-    # Internal name for the AUI manager
-    window_name = "Model Page"
-    ## Title to appear on top of the window
-    window_caption = "Model page "
-    ## Flag to tell the AUI manager to put this panel in the center pane
-    CENTER_PANE = True
-    def __init__(self, parent, page_info=None, model_list_box=None):
-        """ 
-            Initialization of the Panel
-        """
-        wx.ScrolledWindow.__init__(self, parent, style=wx.FULL_REPAINT_ON_RESIZE)
-        #Set window's font size 
-        self.SetWindowVariant(variant=FONT_VARIANT)
-        self.model  = None
-        self.data = None 
-        ## parent of the page
-        self.parent = parent
-        ## Data member to store the dispersion object created
-        self._disp_obj_dict = {}
-        ## selected parameters to apply dispersion
-        self.disp_cb_dict ={}
-        self.model_list_box = model_list_box
-        ## smearer object
-        self.smearer = None
-        
-        ##list of model parameters. each item must have same length
-        ## each item related to a given parameters
-        ##[cb state, name, value, "+/-", error of fit, min, max , units]
-        self.parameters=[]
-        ## list of parameters to fit , must be like self.parameters
-        self.param_toFit=[]
-        ## list of looking like parameters but with non fittable parameters info
-        self.fixed_param=[]
-        ## list of looking like parameters but with  fittable parameters info
-        self.fittable_param=[]
-        ##list of dispersion parameters
-        self.disp_list=[]
-        self.disp_name=""
-        ## list of orientation parameters
-        self.orientation_params=[]
-        self.orientation_params_disp=[]
-        if self.model !=None:
-            self.disp_list= self.model.getDispParamList()
-        
-        ##enable model 2D draw
-        self.enable2D= False
-        ## check that the fit range is correct to plot the model again
-        self.fitrange= True
-
-        ## Q range
-        self.qmin_x= _QMIN_DEFAULT
-        self.qmax_x= _QMAX_DEFAULT
-        self.num_points= _NPTS_DEFAULT
-        
-        ## Create memento to save the current state
-        self.state= PageState(parent= self.parent,model=self.model, data=self.data)
-        ## flag to determine if state has change
-        self.state_change= False
-        ## save customized array
-        self.values=[]
-        self.weights=[]
-        ## retrieve saved state
-        self.number_saved_state= 0
-        ## dictionary of saved state
-        self.saved_states={} 
-        
-        ## Create context menu for page
-        self.popUpMenu = wx.Menu()
-        #id = wx.NewId()
-        #self._undo = wx.MenuItem(self.popUpMenu,id, "Undo","cancel the previous action")
-        #self.popUpMenu.AppendItem(self._undo)
-        #self._undo.Enable(False)
-        #wx.EVT_MENU(self, id, self.onUndo)
-        
-        #id = wx.NewId()
-        #self._redo = wx.MenuItem(self.popUpMenu,id,"Redo"," Restore the previous action")
-        #self.popUpMenu.AppendItem(self._redo)
-        #self._redo.Enable(False)
-        #wx.EVT_MENU(self, id, self.onRedo)       
-        #self.popUpMenu.AppendSeparator()
-        #if sys.platform.count("win32")>0:        
-        id = wx.NewId()
-        self._keep = wx.MenuItem(self.popUpMenu,id,"BookMark"," Keep the panel status to recall it later")
-        self.popUpMenu.AppendItem(self._keep)
-        self._keep.Enable(True)
-        #wx.EVT_MENU(self, id, self.onSave)
-        self.popUpMenu.AppendSeparator()
-    
-        ## Default locations
-        self._default_save_location = os.getcwd()     
-      
-        
-      
-        ## create the basic structure of the panel with empty sizer
-        self.define_page_structure()
-        self._fill_model_sizer(self.sizer1)  
-        ## drawing Initial dispersion parameters sizer 
-        self.set_dispers_sizer()
-        self._fill_save_sizer()
-        self.engine_type = None 
-        self._fill_range_sizer()
-        
-        
-          ## save initial state on context menu
-        #self.onSave(event=None)
-        self.Bind(wx.EVT_CONTEXT_MENU, self.onContextMenu)
-        description=""
-        if self.model != None:
-            description = self.model.description
-            self.select_model(self.model)
-            self.set_model_description(description, self.sizer2)
-         ## layout
-        self.set_layout()
-        
-    def onContextMenu(self, event): 
-        """
-            Retrieve the state selected state
-        """
-        # Skipping the save state functionality for release 0.9.0
-        #return
-        pos = event.GetPosition()
-        pos = self.ScreenToClient(pos)
-        self.PopupMenu(self.popUpMenu, pos) 
-      
-    def onSave(self, event):
-        """
-            save history of the data and model
-        """
-        if self.model==None:
-            return 
-        if hasattr(self,"enable_disp"):
-            self.state.enable_disp = copy.deepcopy(self.enable_disp.GetValue())
-        if hasattr(self, "disp_box"):
-            self.state.disp_box = copy.deepcopy(self.disp_box.GetSelection())
-
-        self.state.model.name= self.model.name
-        
-        #Remember fit engine_type for fit panel
-        if self.engine_type == None: 
-            self.engine_type = "scipy"
-        if self.manager !=None:
-            self.manager._on_change_engine(engine=self.engine_type)
-        
-            self.state.engine_type = self.engine_type
-
-        new_state = self.state.clone()
-        new_state.model.name = self.state.model.name
-        
-        new_state.enable2D = copy.deepcopy(self.enable2D)
-        ##Add model state on context menu
-        self.number_saved_state += 1
-        #name= self.model.name+"[%g]"%self.number_saved_state 
-        name= self.model.__class__.__name__+"[%g]"%self.number_saved_state 
-        self.saved_states[name]= new_state
-        
-        ## Add item in the context menu
-        
-        year, month, day,hour,minute,second,tda,ty,tm_isdst= time.localtime()
-        my_time= str(hour)+" : "+str(minute)+" : "+str(second)+" "
-        date= str( month)+"|"+str(day)+"|"+str(year)
-        msg=  "Model saved at %s on %s"%(my_time, date)
-         ## post help message for the selected model 
-        msg +=" Saved! right click on this page to retrieve this model"
-        wx.PostEvent(self.parent, StatusEvent(status = msg ))
-        
-        id = wx.NewId()
-        self.popUpMenu.Append(id,name,str(msg))
-        wx.EVT_MENU(self, id, self.onResetModel)  
-        
-    def define_page_structure(self):
-        """
-            Create empty sizer for a panel
-        """
-        self.vbox  = wx.BoxSizer(wx.VERTICAL)
-        self.sizer0 = wx.BoxSizer(wx.VERTICAL)
-        self.sizer1 = wx.BoxSizer(wx.VERTICAL)
-        self.sizer2 = wx.BoxSizer(wx.VERTICAL)
-        self.sizer3 = wx.BoxSizer(wx.VERTICAL)
-        self.sizer4 = wx.BoxSizer(wx.VERTICAL)
-        self.sizer5 = wx.BoxSizer(wx.VERTICAL)
-        self.sizer6 = wx.BoxSizer(wx.VERTICAL)
-        
-        self.sizer0.SetMinSize((PANEL_WIDTH,-1))
-        self.sizer1.SetMinSize((PANEL_WIDTH,-1))
-        self.sizer2.SetMinSize((PANEL_WIDTH,-1))
-        self.sizer3.SetMinSize((PANEL_WIDTH,-1))
-        self.sizer4.SetMinSize((PANEL_WIDTH,-1))
-        self.sizer5.SetMinSize((PANEL_WIDTH,-1))
-        #self.sizer6.SetMinSize((375,-1))
-        
-        self.vbox.Add(self.sizer0)
-        self.vbox.Add(self.sizer1)
-        self.vbox.Add(self.sizer2)
-        self.vbox.Add(self.sizer3)
-        self.vbox.Add(self.sizer4)
-        self.vbox.Add(self.sizer5)
-        #self.vbox.Add(self.sizer6)
-        
-        
-    def set_layout(self):
-        """
-             layout
-        """
-        self.vbox.Layout()
-        self.vbox.Fit(self) 
-        self.SetSizer(self.vbox)
-       
-        self.set_scroll()
-        self.Centre()
-        
-        
-    def set_scroll(self):
-        self.SetScrollbars(20,20,25,65)
-        self.Layout()   
-        self.SetAutoLayout(True)
-         
-               
-                
-    def reset_page(self, state):
-        """
-            reset the state
-        """
-        self.reset_page_helper(state)
-        
-        
-    def old_select_model(self, model):
-        """
-            Select a new model
-            @param model: model object 
-        """
-        self.model = model
-        if self.model !=None:
-            self.disp_list= self.model.getDispParamList()
-        self.set_model_param_sizer(self.model)
-        ## keep the sizer view consistent with the model menu selecting
-        self._set_model_sizer_selection( self.model )
-        self.enable_disp.SetValue(False)
-        self.disable_disp.SetValue(True)
-        self.set_dispers_sizer()
-        
-        self.model_view.SetFocus()
-        if self.model !=None:
-            self._draw_model()
-        self.state.structurecombobox = self.structurebox.GetCurrentSelection()
-        self.state.formfactorcombobox = self.formfactorbox.GetCurrentSelection()
-       
-        ## post state to fit panel
-        #self._undo.Enable(True)
-        event = PageInfoEvent(page = self)
-        wx.PostEvent(self.parent, event)               
-    
-    
-    def set_model_description(self,description,sizer):
-        """
-            fill a sizer with description
-            @param description: of type string
-            @param sizer: wx.BoxSizer()
-        """
-    
-        sizer.Clear(True)
-        box_description= wx.StaticBox(self, -1, 'Model Description')
-        boxsizer1 = wx.StaticBoxSizer(box_description, wx.VERTICAL)
-
-        sizer_selection=wx.BoxSizer(wx.HORIZONTAL)
-        self.description_hide = wx.RadioButton(self, -1, 'Hide', style=wx.RB_GROUP)
-        self.description_show = wx.RadioButton(self, -1, 'Show')
-       
-        
-        if description=="":
-            self.description_hide.SetValue(True)
-            description=" Description unavailable. Click for details"
-            
-        self.description = wx.StaticText( self,-1,str(description) )
-        
-        self.Bind( wx.EVT_RADIOBUTTON, self._on_display_description,
-                   id=self.description_hide.GetId() )
-        
-        self.Bind( wx.EVT_RADIOBUTTON, self._on_display_description,
-                   id=self.description_show.GetId() )
-        #MAC needs SetValue
-        self.description_hide.SetValue(True)
-        
-        self.model_description = wx.Button(self,-1, label="Details", size=(80,23))
-        
-        self.model_description.Bind(wx.EVT_BUTTON,self.on_button_clicked)
-        self.model_description.SetToolTipString("Click Model Functions in HelpWindow...")
-        self.model_description.SetFocus()
-        sizer_selection.Add( self.description_show )
-        sizer_selection.Add( (20,20)) 
-        sizer_selection.Add( self.description_hide )
-        sizer_selection.Add((20,20),0, wx.LEFT|wx.RIGHT|wx.EXPAND,75)
-        sizer_selection.Add( self.model_description )
-                     
-         
-        self.sizer_description=wx.BoxSizer(wx.HORIZONTAL)
-        self.sizer_description.Add( self.description, 1, wx.EXPAND | wx.ALL, 10 )
-        boxsizer1.Add( sizer_selection) 
-        boxsizer1.Add( (20,20)) 
-        boxsizer1.Add( self.sizer_description) 
-    
-        self._on_display_description(event=None)
-        sizer.Add(boxsizer1,0, wx.EXPAND | wx.ALL, 10)
-        sizer.Layout()
-   
-    def on_button_clicked(self,event):
-        """
-        #On 'More details' button
-        """
-        from helpPanel import  HelpWindow
-        
-        if self.model == None:
-            name = 'FuncHelp'
-        else:
-            name = self.model.name
-        frame = HelpWindow(None, -1,  pageToOpen="doc/model_functions.html")    
-        frame.Show(True)
-        if frame.rhelp.HasAnchor(name):
-            frame.rhelp.ScrollToAnchor(name)
-        else:
-           msg= "Model does not contains an available description "
-           msg +="Please.Search in the Help window"
-           wx.PostEvent(self.parent, StatusEvent(status = msg ))
-                     
-            
-            
-    def set_range(self, qmin_x, qmax_x, npts):
-        """
-            Set the range for the plotted models
-            @param qmin: minimum Q
-            @param qmax: maximum Q
-            @param npts: number of Q bins
-        """
-        # Set the data members
-        self.qmin_x = qmin_x
-        self.qmax_x = qmax_x
-        self.num_points = npts
-        
-        # Set the controls
-        #For qmin and qmax, do not use format_number.(If do, qmin and max could be different from what is in the data.)
-       
-        self.qmin.SetValue(str(self.qmin_x))
-        self.qmax.SetValue(str(self.qmax_x))
-        self.npts.SetValue(format_number(self.num_points))
-        
-        
-    def set_model_param_sizer(self, model):
-        """
-            Build the panel from the model content
-            @param model: the model selected in combo box for fitting purpose
-        """
-        self.sizer3.Clear(True)
-        self.parameters = []
-        self.param_toFit=[]
-        self.fixed_param=[]
-        self.orientation_params=[]
-        self.orientation_params_disp=[]
-        #self.temp=[]
-        if model ==None:
-            ##no model avaiable to draw sizer 
-            self.sizer3.Layout()
-            self.SetScrollbars(20,20,25,65)
-            return
-        box_description= wx.StaticBox(self, -1,str("Model Parameters"))
-        boxsizer1 = wx.StaticBoxSizer(box_description, wx.VERTICAL)
-        sizer = wx.GridBagSizer(5,5)
-        
-        self.model = model
-        self.set_model_description(self.model.description,self.sizer2)
-       
-        keys = self.model.getParamList()
-        ##list of dispersion parameters
-        self.disp_list=self.model.getDispParamList()
-       
-        keys.sort()
-    
-        iy = 0
-        ix = 0
-        self.text1_2 = wx.StaticText(self, -1, 'Names')
-        sizer.Add(self.text1_2,(iy, ix),(1,1),\
-                             wx.LEFT|wx.EXPAND|wx.ADJUST_MINSIZE, 15)
-        ix +=1
-        self.text2_2 = wx.StaticText(self, -1, 'Values')
-        sizer.Add(self.text2_2,(iy, ix),(1,1),\
-                            wx.EXPAND|wx.ADJUST_MINSIZE, 0) 
-        ix +=1
-        self.text2_4 = wx.StaticText(self, -1, '[Units]')
-        sizer.Add(self.text2_4,(iy, ix),(1,1),\
-                            wx.EXPAND|wx.ADJUST_MINSIZE, 0) 
-        self.text2_4.Hide()
-        
-        for item in keys:
-            if not item in self.disp_list and not item in self.model.orientation_params:
-                iy += 1
-                ix = 0
-                name = wx.StaticText(self, -1,item)
-                sizer.Add( name,( iy, ix),(1,1),
-                             wx.LEFT|wx.EXPAND|wx.ADJUST_MINSIZE, 15)
-
-                ix += 1
-                value= self.model.getParam(item)
-                ctl1 = self.ModelTextCtrl(self, -1, size=(_BOX_WIDTH,20),
-                    style=wx.TE_PROCESS_ENTER)
-                
-                ctl1.SetValue(str (format_number(value)))
-                
-                sizer.Add(ctl1, (iy,ix),(1,1), wx.EXPAND)
-                ix +=1
-                # Units
-                if self.model.details.has_key(item):
-                    units = wx.StaticText(self, -1, self.model.details[item][0], style=wx.ALIGN_LEFT)
-                else:
-                    units = wx.StaticText(self, -1, "", style=wx.ALIGN_LEFT)
-                sizer.Add(units, (iy,ix),(1,1),  wx.EXPAND|wx.ADJUST_MINSIZE, 0)
-                ##[cb state, name, value, "+/-", error of fit, min, max , units]
-                self.parameters.append([None,item, ctl1,
-                                        None,None, None, None,None])
-        iy+=1
-        sizer.Add((10,10),(iy,ix),(1,1), wx.LEFT|wx.EXPAND|wx.ADJUST_MINSIZE, 15)
-        iy += 1
-        ix = 0
-        
-        #Add tile for orientational angle parameters
-        for item in keys:
-            if item in self.model.orientation_params:        
-                orient_angle = wx.StaticText(self, -1, '[For 2D only]:')
-                sizer.Add(orient_angle,(iy, ix),(1,1), wx.LEFT|wx.EXPAND|wx.ADJUST_MINSIZE, 15) 
-                if not self.enable2D:
-                    orient_angle.Hide()
-                else:
-                    orient_angle.Show(True)
-                break
-                                          
-        for item  in self.model.orientation_params:
-            if not item in self.disp_list and item in keys:
-                iy += 1
-                ix = 0
-                name = wx.StaticText(self, -1,item)
-                sizer.Add( name,( iy, ix),(1,1),
-                             wx.LEFT|wx.EXPAND|wx.ADJUST_MINSIZE, 15)
-                if not self.enable2D:
-                    name.Hide()
-                else:
-                    name.Show(True)
-
-                ix += 1
-                value= self.model.getParam(item)
-                ctl1 = self.ModelTextCtrl(self, -1, size=(_BOX_WIDTH,20),
-                    style=wx.TE_PROCESS_ENTER)
-                
-                ctl1.SetValue(str (format_number(value)))
-                if not self.enable2D:
-                    ctl1.Hide()
-                    ctl1.Disable()
-                else:
-                    ctl1.Show(True)
-                    ctl1.Enable()
-                
-                sizer.Add(ctl1, (iy,ix),(1,1), wx.EXPAND)
-                ix +=1
-                # Units
-                if self.model.details.has_key(item):
-                    units = wx.StaticText(self, -1, self.model.details[item][0], style=wx.ALIGN_LEFT)
-                else:
-                    units = wx.StaticText(self, -1, "", style=wx.ALIGN_LEFT)
-                if not self.enable2D:
-                    units.Hide()
-                else:
-                    units.Show(True)
-   
-                sizer.Add(units, (iy,ix),(1,1),  wx.EXPAND|wx.ADJUST_MINSIZE, 0)
-                #Save 2D orient. params
-                #self.temp.append([name,ctl1,units,orient_angle])
-                
-                               
-                ##[cb state, name, value, "+/-", error of fit, min, max , units]
-                self.parameters.append([None,item, ctl1,
-                                        None,None, None, None,None])
-                self.orientation_params.append([None,item, ctl1,
-                                        None,None, None, None,None])
-                    
-        iy+=1
-        
-        #Display units text on panel
-        for item in keys:   
-            self.text2_4.Show()
-
-      
-        boxsizer1.Add(sizer)
-        self.sizer3.Add(boxsizer1,0, wx.EXPAND | wx.ALL, 10)
-        self.sizer3.Layout()
-        self.SetScrollbars(20,20,25,65)
-    
-    class ModelTextCtrl(wx.TextCtrl):
-        """
-            Text control for model and fit parameters.
-            Binds the appropriate events for user interactions.
-            Default callback methods can be overwritten on initialization
-            
-            @param kill_focus_callback: callback method for EVT_KILL_FOCUS event
-            @param set_focus_callback:  callback method for EVT_SET_FOCUS event
-            @param mouse_up_callback:   callback method for EVT_LEFT_UP event
-            @param text_enter_callback: callback method for EVT_TEXT_ENTER event
-        """
-        ## Set to True when the mouse is clicked while the whole string is selected
-        full_selection = False
-        ## Call back for EVT_SET_FOCUS events
-        _on_set_focus_callback = None
-        
-        def __init__(self, parent, id=-1, value=wx.EmptyString, pos=wx.DefaultPosition, 
-                     size=wx.DefaultSize, style=0, validator=wx.DefaultValidator, name=wx.TextCtrlNameStr,
-                     kill_focus_callback = None, set_focus_callback  = None,
-                     mouse_up_callback   = None, text_enter_callback = None):
-             
-            wx.TextCtrl.__init__(self, parent, id, value, pos, size, style, validator, name)
-            
-            # Bind appropriate events
-            self._on_set_focus_callback = parent.onSetFocus \
-                      if set_focus_callback is None else set_focus_callback
-            self.Bind(wx.EVT_SET_FOCUS, self._on_set_focus)
-            self.Bind(wx.EVT_KILL_FOCUS, parent._onparamEnter \
-                      if kill_focus_callback is None else kill_focus_callback)                
-            self.Bind(wx.EVT_TEXT_ENTER, parent._onparamEnter \
-                      if text_enter_callback is None else text_enter_callback)
-            if not ON_MAC :
-                self.Bind(wx.EVT_LEFT_UP,    self._highlight_text \
-                          if mouse_up_callback is None else mouse_up_callback)
-            
-        def _on_set_focus(self, event):
-            """
-                Catch when the text control is set in focus to highlight the whole
-                text if necessary
-                @param event: mouse event
-            """
-            
-            event.Skip()
-            self.full_selection = True
-            return self._on_set_focus_callback(event)
-        
- 
-            
-        def _highlight_text(self, event):
-            """
-                Highlight text of a TextCtrl only of no text has be selected
-                @param event: mouse event
-            """
-            # Make sure the mouse event is available to other listeners
-            event.Skip()
-            control  = event.GetEventObject()
-            if self.full_selection:
-                self.full_selection = False
-                # Check that we have a TextCtrl
-                if issubclass(control.__class__, wx.TextCtrl):
-                    # Check whether text has been selected, 
-                    # if not, select the whole string
-                    (start, end) = control.GetSelection()
-                    if start==end:
-                        control.SetSelection(-1,-1)
-                 
-       
-    def onContextMenu(self, event): 
-        """
-            Retrieve the state selected state
-        """
-        # Skipping the save state functionality for release 0.9.0
-        #return
-    
-        pos = event.GetPosition()
-        pos = self.ScreenToClient(pos)
-       
-        self.PopupMenu(self.popUpMenu, pos) 
-      
-        
-    def onUndo(self, event):
-        """
-            Cancel the previous action
-        """
-        #print "enable undo"
-        event = PreviousStateEvent(page = self)
-        wx.PostEvent(self.parent, event)
-        
-        
-    def onRedo(self, event):
-        """
-            Restore the previous action cancelled 
-        """
-        #print "enable redo"
-        event = NextStateEvent(page= self)
-        wx.PostEvent(self.parent, event)
-        
-        
-    def define_page_structure(self):
-        """
-            Create empty sizer for a panel
-        """
-        self.vbox  = wx.BoxSizer(wx.VERTICAL)
-        self.sizer0 = wx.BoxSizer(wx.VERTICAL)
-        self.sizer1 = wx.BoxSizer(wx.VERTICAL)
-        self.sizer2 = wx.BoxSizer(wx.VERTICAL)
-        self.sizer3 = wx.BoxSizer(wx.VERTICAL)
-        self.sizer4 = wx.BoxSizer(wx.VERTICAL)
-        self.sizer5 = wx.BoxSizer(wx.VERTICAL)
-        self.sizer6 = wx.BoxSizer(wx.VERTICAL)
-        
-        self.sizer0.SetMinSize((PANEL_WIDTH,-1))
-        self.sizer1.SetMinSize((PANEL_WIDTH,-1))
-        self.sizer2.SetMinSize((PANEL_WIDTH,-1))
-        self.sizer3.SetMinSize((PANEL_WIDTH,-1))
-        self.sizer4.SetMinSize((PANEL_WIDTH,-1))
-        self.sizer5.SetMinSize((PANEL_WIDTH,-1))
-        #self.sizer6.SetMinSize((375,-1))
-        
-        self.vbox.Add(self.sizer0)
-        self.vbox.Add(self.sizer1)
-        self.vbox.Add(self.sizer2)
-        self.vbox.Add(self.sizer3)
-        self.vbox.Add(self.sizer4)
-        self.vbox.Add(self.sizer5)
-        #self.vbox.Add(self.sizer6)
-        
-    def set_layout(self):
-        """
-             layout
-        """
-        self.vbox.Layout()
-        self.vbox.Fit(self) 
-        self.SetSizer(self.vbox)
-       
-        self.set_scroll()
-        self.Centre()
-        
-        
-    def set_scroll(self):
-        self.SetScrollbars(20,20,25,65)
-        self.Layout()   
-        self.SetAutoLayout(True)
-         
-         
-    def set_owner(self,owner):
-        """ 
-            set owner of fitpage
-            @param owner: the class responsible of plotting
-        """
-        self.event_owner = owner    
-        self.state.event_owner = owner
-  
-    def set_manager(self, manager):
-        """
-             set panel manager
-             @param manager: instance of plugin fitting
-        """
-        self.manager = manager  
-        self.state.manager = manager
-        
-    def populate_box(self, dict):
-        """
-             Store list of model
-             @param dict: dictionary containing list of models
-        """
-        self.model_list_box = dict
-        self.state.model_list_box = self.model_list_box
-            
-    
-        
-    def set_dispers_sizer(self):
-        """
-            fill sizer containing dispersity info
-        """
-        self.sizer4.Clear(True)
-        name="Polydispersity and Orientational Distribution"
-        box_description= wx.StaticBox(self, -1,name)
-        boxsizer1 = wx.StaticBoxSizer(box_description, wx.VERTICAL)
-        #----------------------------------------------------
-        self.disable_disp = wx.RadioButton(self, -1, 'Off', (10, 10), style=wx.RB_GROUP)
-        self.enable_disp = wx.RadioButton(self, -1, 'On', (10, 30))
-       
-        
-        self.Bind(wx.EVT_RADIOBUTTON, self._set_dipers_Param, id=self.disable_disp.GetId())
-        self.Bind(wx.EVT_RADIOBUTTON, self._set_dipers_Param, id=self.enable_disp.GetId())
-        #MAC needs SetValue
-        self.disable_disp.SetValue(True)
-        sizer_dispersion = wx.BoxSizer(wx.HORIZONTAL)
-        sizer_dispersion.Add((20,20))
-        name=""#Polydispersity and \nOrientational Distribution "
-        sizer_dispersion.Add(wx.StaticText(self,-1,name))
-        sizer_dispersion.Add(self.enable_disp )
-        sizer_dispersion.Add((20,20))
-        sizer_dispersion.Add(self.disable_disp )
-        sizer_dispersion.Add((10,10))
-        
-        ## fill a sizer with the combobox to select dispersion type
-        sizer_select_dispers = wx.BoxSizer(wx.HORIZONTAL)  
-        self.model_disp = wx.StaticText(self, -1, 'Distribution Function ')
-            
-        import sans.models.dispersion_models 
-        self.polydisp= sans.models.dispersion_models.models
-        self.disp_box = wx.ComboBox(self, -1)
-
-        for key, value in self.polydisp.iteritems():
-            name = str(key)
-            self.disp_box.Append(name,value)
-        self.disp_box.SetStringSelection("gaussian") 
-        wx.EVT_COMBOBOX(self.disp_box,-1, self._on_select_Disp) 
-             
-        sizer_select_dispers.Add((10,10)) 
-        sizer_select_dispers.Add(self.model_disp) 
-        sizer_select_dispers.Add(self.disp_box,0,
-                wx.TOP|wx.BOTTOM|wx.LEFT|wx.EXPAND|wx.ADJUST_MINSIZE,border=5)
-      
-        self.model_disp.Hide()
-        self.disp_box.Hide()
-        
-        boxsizer1.Add( sizer_dispersion,0,
-                wx.TOP|wx.BOTTOM|wx.LEFT|wx.EXPAND|wx.ADJUST_MINSIZE,border=5)
-        #boxsizer1.Add( (10,10) )
-        boxsizer1.Add( sizer_select_dispers )
-        self.sizer4_4 = wx.GridBagSizer(5,5)
-        boxsizer1.Add( self.sizer4_4  )
-        #-----------------------------------------------------
-        self.sizer4.Add(boxsizer1,0, wx.EXPAND | wx.ALL, 10)
-        self.sizer4_4.Layout()
-        self.sizer4.Layout()
-        self.Layout()
-        self.SetScrollbars(20,20,25,65)
-        self.Refresh()
-        ## saving the state of enable dispersity button
-        self.state.enable_disp= self.enable_disp.GetValue()
-        self.state.disable_disp= self.disable_disp.GetValue()
-    
-    
-    def select_disp_angle(self, event): 
-        """
-            Event for when a user select a parameter to average over.
-            @param event: radiobutton event
-        """
-        self.values=[]
-        self.weights=[]
-        if event.GetEventObject()==self.noDisper_rbox:
-            if self.noDisper_rbox.GetValue():
-                #No array dispersity apply yet
-                self._reset_dispersity()
-                ## Redraw the model ???
-                self._draw_model()
-        # Go through the list of dispersion check boxes to identify which one has changed 
-        for p in self.disp_cb_dict:
-            self.state.disp_cb_dict[p]=  self.disp_cb_dict[p].GetValue()
-            # Catch which one of the box was just checked or unchecked.
-            if event.GetEventObject() == self.disp_cb_dict[p]:              
-                if self.disp_cb_dict[p].GetValue() == True:
-                    
-                    ##Temp. FIX for V1.0 regarding changing checkbox to radiobutton.
-                    ##This (self._reset_dispersity) should be removed when the array dispersion is fixed.                
-                    self._reset_dispersity()
-
-                    # The user wants this parameter to be averaged. 
-                    # Pop up the file selection dialog.
-                    path = self._selectDlg()
-                    
-                    # If nothing was selected, just return
-                    if path is None:
-                        self.disp_cb_dict[p].SetValue(False)
-                        return
-                    try:
-                        self._default_save_location = os.path.dirname(path)
-                    except:
-                        pass 
-                    try:
-                        self.values, self.weights = self.read_file(path)
-                    except:
-                        msg = "Could not read input file"
-                        wx.PostEvent(self.parent, StatusEvent(status=msg))
-                        return
-                    
-                    # If any of the two arrays is empty, notify the user that we won't
-                    # proceed 
-                    if self.values is None or self.weights is None or \
-                         self.values ==[] or self.weights ==[]:
-                        msg ="The loaded %s distribution is corrupted or empty"%p
-                        wx.PostEvent(self.parent.parent, StatusEvent(status=msg))
-                        return
-                        
-                    # Tell the user that we are about to apply the distribution
-                    msg = "Applying loaded %s distribution: %s"%(p, path)
-                    wx.PostEvent(self.parent, StatusEvent(status=msg))  
-                    
-                    # Create the dispersion objects
-                    from sans.models.dispersion_models import ArrayDispersion
-                    disp_model = ArrayDispersion()
-                    disp_model.set_weights(self.values, self.weights)
-                   
-                    # Store the object to make it persist outside the scope of
-                    # this method
-                    # TODO: refactor model to clean this up?
-                    self._disp_obj_dict[p] = disp_model
-                    self.state._disp_obj_dict [p]= disp_model
-                    self.state.values=[]
-                    self.state.weights=[]
-                    self.state.values = copy.deepcopy(self.values)
-                    self.state.weights = copy.deepcopy(self.weights)
-                    # Set the new model as the dispersion object for the selected parameter
-                    self.model.set_dispersion(p, disp_model)
-                    # Store a reference to the weights in the model object so that
-                    # it's not lost when we use the model within another thread.
-                    #TODO: total hack - fix this
-                    self.state.model= self.model.clone()
-
-                    self.model._persistency_dict = {}
-                    self.model._persistency_dict[p] = [self.values, self.weights]
-                    self.state.model._persistency_dict[p] = [self.values, self.weights]
-                else:
-                    self._reset_dispersity()
-              
-                ## Redraw the model
-                self._draw_model()
-        
-        ## post state to fit panel
-        event = PageInfoEvent(page = self)
-        wx.PostEvent(self.parent, event)
-       
-    
-    def onResetModel(self, event):
-        """
-            Reset model state
-        """
-        ## post help message for the selected model 
-        msg = self.popUpMenu.GetHelpString(event.GetId())
-        msg +=" reloaded"
-        wx.PostEvent(self.parent, StatusEvent(status = msg ))
-        
-        name= self.popUpMenu.GetLabel(event.GetId())
-        self._on_select_model_helper()
-        
-        if name in self.saved_states.keys():
-            previous_state = self.saved_states[name]
-            ## reset state of checkbox,textcrtl  and  regular parameters value
-            self.reset_page(previous_state)      
-                  
-    def onSave(self, event):
-        """
-            save history of the data and model
-        """
-        if self.model==None:
-            return 
-        if hasattr(self,"enable_disp"):
-            self.state.enable_disp = copy.deepcopy(self.enable_disp.GetValue())
-        if hasattr(self, "disp_box"):
-            self.state.disp_box = copy.deepcopy(self.disp_box.GetSelection())
-
-        self.state.model.name= self.model.name
-        
-        #Remember fit engine_type for fit panel
-        if self.engine_type == None: 
-            self.engine_type = "scipy"
-        if self.manager !=None:
-            self.manager._on_change_engine(engine=self.engine_type)
-        
-            self.state.engine_type = self.engine_type
-
-        new_state = self.state.clone()
-        new_state.model.name = self.state.model.name
-        
-        new_state.enable2D = copy.deepcopy(self.enable2D)
-        ##Add model state on context menu
-        self.number_saved_state += 1
-        #name= self.model.name+"[%g]"%self.number_saved_state 
-        name= self.model.__class__.__name__+"[%g]"%self.number_saved_state 
-        self.saved_states[name]= new_state
-        
-        ## Add item in the context menu
-        
-        year, month, day,hour,minute,second,tda,ty,tm_isdst= time.localtime()
-        my_time= str(hour)+" : "+str(minute)+" : "+str(second)+" "
-        date= str( month)+"|"+str(day)+"|"+str(year)
-        msg=  "Model saved at %s on %s"%(my_time, date)
-         ## post help message for the selected model 
-        msg +=" Saved! right click on this page to retrieve this model"
-        wx.PostEvent(self.parent, StatusEvent(status = msg ))
-        
-        id = wx.NewId()
-        self.popUpMenu.Append(id,name,str(msg))
-        wx.EVT_MENU(self, id, self.onResetModel)
-        
-    def onSetFocus(self, evt):
-        """
-            highlight the current textcrtl and hide the error text control shown 
-            after fitting
-            :Not implemented.
-        """
-        return
-    
-    def read_file(self, path):
-        """
-            Read two columns file
-            @param path: the path to the file to read
-        """
-        try:
-            if path==None:
-                wx.PostEvent(self.parent, StatusEvent(status=\
-                            " Selected Distribution was not loaded: %s"%path))
-                return None, None
-            input_f = open(path, 'r')
-            buff = input_f.read()
-            lines = buff.split('\n')
-            
-            angles = []
-            weights=[]
-            for line in lines:
-                toks = line.split()
-                try:
-                    angle = float(toks[0])
-                    weight = float(toks[1])
-                except:
-                    # Skip non-data lines
-                    pass
-                angles.append(angle)
-                weights.append(weight)
-            return numpy.array(angles), numpy.array(weights)
-        except:
-            raise 
-    
-    
-    def createMemento(self):
-        """
-            return the current state of the page
-        """
-        return self.state.clone()
-    
-    
-    def save_current_state(self):
-        """
-            Store current state
-        """
-        ## save model option
-        if self.model!= None:
-            self.disp_list= self.model.getDispParamList()
-            self.state.disp_list= copy.deepcopy(self.disp_list)
-            self.state.model = self.model.clone()
-
-        self.state.enable2D = copy.deepcopy(self.enable2D)
-        self.state.values= copy.deepcopy(self.values)
-        self.state.weights = copy.deepcopy( self.weights)
-        ## save data    
-        self.state.data= copy.deepcopy(self.data)
-        try:
-            n = self.disp_box.GetCurrentSelection()
-            dispersity= self.disp_box.GetClientData(n)
-            name= dispersity.__name__
-            self.disp_name = name
-            if name == "GaussianDispersion" :
-               if hasattr(self,"cb1"):
-                   self.state.cb1= self.cb1.GetValue()
-        except:
-            pass
-        
-        if hasattr(self,"enable_disp"):
-            self.state.enable_disp= self.enable_disp.GetValue()
-            self.state.disable_disp = self.disable_disp.GetValue()
-            
-        self.state.smearer = copy.deepcopy(self.smearer)
-        if hasattr(self,"enable_smearer"):
-            self.state.enable_smearer = copy.deepcopy(self.enable_smearer.GetValue())
-            self.state.disable_smearer = copy.deepcopy(self.disable_smearer.GetValue())
-            
-        if hasattr(self,"disp_box"):
-            self.state.disp_box = self.disp_box.GetCurrentSelection()
-
-            if len(self.disp_cb_dict)>0:
-                for k , v in self.disp_cb_dict.iteritems():
-         
-                    if v ==None :
-                        self.state.disp_cb_dict[k]= v
-                    else:
-                        try:
-                            self.state.disp_cb_dict[k]=v.GetValue()
-                        except:
-                            self.state.disp_cb_dict[k]= None
-           
-            if len(self._disp_obj_dict)>0:
-                for k , v in self._disp_obj_dict.iteritems():
-      
-                    self.state._disp_obj_dict[k]= v
-                        
-            
-            self.state.values = copy.deepcopy(self.values)
-            self.state.weights = copy.deepcopy(self.weights)
-        ## save plotting range
-        self._save_plotting_range()
-        
-        self.state.orientation_params =[]
-        self.state.orientation_params_disp =[]
-        self.state.parameters =[]
-        self.state.fittable_param =[]
-        self.state.fixed_param =[]
-
-        
-        ## save checkbutton state and txtcrtl values
-        self._copy_parameters_state(self.orientation_params,
-                                     self.state.orientation_params)
-        self._copy_parameters_state(self.orientation_params_disp,
-                                     self.state.orientation_params_disp)
-        
-        self._copy_parameters_state(self.parameters, self.state.parameters)
-        self._copy_parameters_state(self.fittable_param, self.state.fittable_param)
-        self._copy_parameters_state(self.fixed_param, self.state.fixed_param)
-    
-
-    def save_current_state_fit(self):
-        """
-            Store current state for fit_page
-        """
-        ## save model option
-        if self.model!= None:
-            self.disp_list= self.model.getDispParamList()
-            self.state.disp_list= copy.deepcopy(self.disp_list)
-            self.state.model = self.model.clone()
-        #if hasattr(self,self.engine_type)> 0:
-            #self.state.engine_type = self.engine_type.clone() 
-        self.state.enable2D = copy.deepcopy(self.enable2D)
-        self.state.values = copy.deepcopy(self.values)
-        self.state.weights = copy.deepcopy( self.weights)
-        ## save data    
-        self.state.data= copy.deepcopy(self.data)
-        try:
-            n = self.disp_box.GetCurrentSelection()
-            dispersity= self.disp_box.GetClientData(n)
-            name= dispersity.__name__
-            self.disp_name = name
-            if name == "GaussianDispersion":
-               if hasattr(self, "cb1"):
-                   self.state.cb1 = self.cb1.GetValue()
-        except:
-            pass
-        
-        if hasattr(self, "enable_disp"):
-            self.state.enable_disp= self.enable_disp.GetValue()
-            self.state.disable_disp = self.disable_disp.GetValue()
-            
-        self.state.smearer = copy.deepcopy(self.smearer)
-        if hasattr(self,"enable_smearer"):
-            self.state.enable_smearer = copy.deepcopy(self.enable_smearer.GetValue())
-            self.state.disable_smearer = copy.deepcopy(self.disable_smearer.GetValue())
-            
-        if hasattr(self,"disp_box"):
-            self.state.disp_box = self.disp_box.GetCurrentSelection()
-
-            if len(self.disp_cb_dict)>0:
-                for k , v in self.disp_cb_dict.iteritems():
-         
-                    if v ==None :
-                        self.state.disp_cb_dict[k]= v
-                    else:
-                        try:
-                            self.state.disp_cb_dict[k]=v.GetValue()
-                        except:
-                            self.state.disp_cb_dict[k]= None
-           
-            if len(self._disp_obj_dict)>0:
-                for k, v in self._disp_obj_dict.iteritems():
-                    self.state._disp_obj_dict[k]= v
-                        
-            self.state.values = copy.deepcopy(self.values)
-            self.state.weights = copy.deepcopy(self.weights)
-           
-        ## save plotting range
-        self._save_plotting_range()
-        ## save checkbutton state and txtcrtl values
-        self._copy_parameters_state(self.orientation_params,
-                                     self.state.orientation_params)
-        self._copy_parameters_state(self.orientation_params_disp,
-                                     self.state.orientation_params_disp)
-        self._copy_parameters_state(self.parameters, self.state.parameters)
-        self._copy_parameters_state(self.fittable_param, self.state.fittable_param)
-        self._copy_parameters_state(self.fixed_param, self.state.fixed_param)
-    
-    def reset_page_helper(self, state):
-        """
-            Use page_state and change the state of existing page
-            @precondition: the page is already drawn or created
-            @postcondition: the state of the underlying data change as well as the
-            state of the graphic interface
-        """
-        if state ==None:
-            #self._undo.Enable(False)
-            return 
-       
-        self.model= state.model
-        self.data = state.data
-        if self.data !=None:
-            from DataLoader.qsmearing import smear_selection
-            self.smearer= smear_selection( self.data )
-        self.enable2D= state.enable2D
-        self.engine_type = state.engine_type
-
-        self.disp_cb_dict = state.disp_cb_dict
-        self.disp_list = state.disp_list
-
-        ## set the state of the radio box
-        self.shape_rbutton.SetValue(state.shape_rbutton )
-        self.shape_indep_rbutton.SetValue(state.shape_indep_rbutton)
-        self.struct_rbutton.SetValue(state.struct_rbutton )
-        self.plugin_rbutton.SetValue(state.plugin_rbutton)
-        ##draw sizer containing model parameters value for the current model
-        self._set_model_sizer_selection( self.model )
-        self.set_model_param_sizer(self.model)
-
-        ## reset value of combox box
-        self.structurebox.SetSelection(state.structurecombobox )
-        self.formfactorbox.SetSelection(state.formfactorcombobox)
-        
-        ## enable the view 2d button if this is a modelpage type
-        if hasattr(self,"model_view"):
-            if self.enable2D:
-                self.model_view.Disable()
-            else:
-                self.model_view.Enable()
-        ## set the select all check box to the a given state
-        if hasattr(self, "cb1"):   
-            self.cb1.SetValue(state.cb1)
-     
-        ## reset state of checkbox,textcrtl  and  regular parameters value
-        self._reset_parameters_state(self.orientation_params_disp,
-                                     state.orientation_params_disp)
-        self._reset_parameters_state(self.orientation_params,
-                                     state.orientation_params)
-        self._reset_parameters_state(self.parameters,state.parameters)    
-         ## display dispersion info layer        
-        self.enable_disp.SetValue(state.enable_disp)
-        self.disable_disp.SetValue(state.disable_disp)
-        
-        if hasattr(self, "disp_box"):
-            
-            self.disp_box.SetSelection(state.disp_box) 
-            n= self.disp_box.GetCurrentSelection()
-            dispersity= self.disp_box.GetClientData(n)
-            name= dispersity.__name__     
-
-            self._set_dipers_Param(event=None)
-       
-            if name=="ArrayDispersion":
-                
-                for item in self.disp_cb_dict.keys():
-                    
-                    if hasattr(self.disp_cb_dict[item],"SetValue") :
-                        self.disp_cb_dict[item].SetValue(state.disp_cb_dict[item])
-                        # Create the dispersion objects
-                        from sans.models.dispersion_models import ArrayDispersion
-                        disp_model = ArrayDispersion()
-                        if hasattr(state,"values")and self.disp_cb_dict[item].GetValue()==True:
-                            if len(state.values)>0:
-                                self.values=state.values
-                                self.weights=state.weights
-                                disp_model.set_weights(self.values, state.weights)
-                            else:
-                                self._reset_dispersity()
-                        
-                        self._disp_obj_dict[item] = disp_model
-                        # Set the new model as the dispersion object for the selected parameter
-                        self.model.set_dispersion(item, disp_model)
-                    
-                        self.model._persistency_dict[item] = [state.values, state.weights]
-                    
-            else:
-                keys = self.model.getParamList()
-                for item in keys:
-                    if item in self.disp_list and not self.model.details.has_key(item):
-                        self.model.details[item]=["",None,None]
-                for k,v in self.state.disp_cb_dict.iteritems():
-                    self.disp_cb_dict = copy.deepcopy(state.disp_cb_dict) 
-                    self.state.disp_cb_dict = copy.deepcopy(state.disp_cb_dict)
-
-        ##plotting range restore    
-        self._reset_plotting_range(state)
-
-        ## smearing info  restore
-        if hasattr(self,"enable_smearer"):
-            ## set smearing value whether or not the data contain the smearing info
-            self.enable_smearer.SetValue(state.enable_smearer)
-            self.disable_smearer.SetValue(state.disable_smearer)
-            self.onSmear(event=None)           
-       
-        ## reset state of checkbox,textcrtl  and dispersity parameters value
-        self._reset_parameters_state(self.fittable_param,state.fittable_param)
-        self._reset_parameters_state(self.fixed_param,state.fixed_param)
-        
-        ## draw the model with previous parameters value
-        self._onparamEnter_helper()
-
-        ## reset context menu items
-        self._reset_context_menu()
-    
-        ## set the value of the current state to the state given as parameter
-        self.state = state.clone() 
-        self._draw_model()
-
-    def on_reset_clicked(self,event):
-        """
-        #On 'Reset' button  for Q range clicked
-        """
-        ##For 3 different cases: Data2D, Data1D, and theory
-        if self.data.__class__.__name__ == "Data2D":
-            data_min= 0
-            x= max(math.fabs(self.data.xmin), math.fabs(self.data.xmax)) 
-            y= max(math.fabs(self.data.ymin), math.fabs(self.data.ymax))
-            self.qmin_x = data_min
-            self.qmax_x = math.sqrt(x*x + y*y)
-        elif self.data.__class__.__name__ == "Data1D":
-            self.qmin_x = min(self.data.x)
-            self.qmax_x = max(self.data.x)
-        else:
-            self.qmin_x = _QMIN_DEFAULT
-            self.qmax_x = _QMAX_DEFAULT
-            self.num_points = _NPTS_DEFAULT            
-            self.state.npts = self.num_points
-            
-
-        self.state.qmin = self.qmin_x
-        self.state.qmax = self.qmax_x
-        
-        #reset the q range values
-        self._reset_plotting_range(self.state)
-        #Re draw plot
-        self._draw_model()
-
-    def on_model_help_clicked(self,event):
-        """
-        #On 'More details' button
-        """
-        from helpPanel import  HelpWindow
-        
-        if self.model == None:
-            name = 'FuncHelp'
-        else:
-            name = self.model.origin_name
-
-        frame = HelpWindow(None, -1,  pageToOpen="doc/model_functions.html")    
-        frame.Show(True)
-        if frame.rhelp.HasAnchor(name):
-            frame.rhelp.ScrollToAnchor(name)
-        else:
-           msg= "Model does not contains an available description "
-           msg +="Please try searching in the Help window"
-           wx.PostEvent(self.parent, StatusEvent(status = msg ))                    
-    
-    def _onQrangeEnter(self, event):
-        """
-            Check validity of value enter in the Q range field
-        """
-        
-        tcrtl= event.GetEventObject()
-        #Clear msg if previously shown.
-        msg= ""
-        wx.PostEvent(self.parent.parent, StatusEvent(status = msg ))
-        # Flag to register when a parameter has changed.
-        is_modified = False
-        if tcrtl.GetValue().lstrip().rstrip()!="":
-            try:
-                value = float(tcrtl.GetValue())
-                tcrtl.SetBackgroundColour(wx.WHITE)
-
-                # If qmin and qmax have been modified, update qmin and qmax
-                if self._validate_qrange( self.qmin, self.qmax):
-                    tempmin = float(self.qmin.GetValue())
-                    if tempmin != self.qmin_x:
-                        self.qmin_x = tempmin
-                    tempmax = float(self.qmax.GetValue())
-                    if tempmax != self.qmax_x:
-                        self.qmax_x = tempmax
-                else:
-                    tcrtl.SetBackgroundColour("pink")
-                    msg= "Model Error:wrong value entered : %s"% sys.exc_value
-                    wx.PostEvent(self.parent.parent, StatusEvent(status = msg ))
-                    return 
-                
-            except:
-                tcrtl.SetBackgroundColour("pink")
-                msg= "Model Error:wrong value entered : %s"% sys.exc_value
-                wx.PostEvent(self.parent.parent, StatusEvent(status = msg ))
-                return 
-            #Check if # of points for theory model are valid(>0).
-            if self.npts != None:
-                if check_float(self.npts):
-                    temp_npts = float(self.npts.GetValue())
-                    if temp_npts !=  self.num_points:
-                        self.num_points = temp_npts
-                        is_modified = True
-                else:
-                    msg= "Cannot Plot :No npts in that Qrange!!!  "
-                    wx.PostEvent(self.parent.parent, StatusEvent(status = msg ))
-           
-        else:
-           tcrtl.SetBackgroundColour("pink")
-           msg= "Model Error:wrong value entered!!!"
-           wx.PostEvent(self.parent.parent, StatusEvent(status = msg ))
-           
-        #self._undo.Enable(True)
-        self.save_current_state()
-        event = PageInfoEvent(page = self)
-        wx.PostEvent(self.parent, event)
-        self.state_change= False
-        #Draw the model for a different range
-        self._draw_model()
-                         
-    def _validate_qrange(self, qmin_ctrl, qmax_ctrl):
-        """
-            Verify that the Q range controls have valid values
-            and that Qmin < Qmax.
-            
-            @param qmin_ctrl: text control for Qmin
-            @param qmax_ctrl: text control for Qmax
-            @return: True is the Q range is value, False otherwise 
-        """
-        qmin_validity = check_float(qmin_ctrl)
-        qmax_validity = check_float(qmax_ctrl)
-        if not (qmin_validity and qmax_validity):
-            return False
-        else:
-            qmin = float(qmin_ctrl.GetValue())
-            qmax = float(qmax_ctrl.GetValue())
-            if qmin < qmax:
-                #Make sure to set both colours white.  
-                qmin_ctrl.SetBackgroundColour(wx.WHITE)
-                qmin_ctrl.Refresh()
-                qmax_ctrl.SetBackgroundColour(wx.WHITE)
-                qmax_ctrl.Refresh()
-            else:
-                qmin_ctrl.SetBackgroundColour("pink")
-                qmin_ctrl.Refresh()
-                qmax_ctrl.SetBackgroundColour("pink")
-                qmax_ctrl.Refresh()
-                msg= "Invalid Q range: Q min must be smaller than Q max"
-                wx.PostEvent(self.parent.parent, StatusEvent(status = msg))
-                return False
-        return True
-      
-    def _on_display_description(self, event):
-        """
-            Show or Hide description
-            @param event: wx.EVT_RADIOBUTTON
-        """
-        self._on_display_description_helper()
-        
-        self.SetScrollbars(20,20,25,65)
-        self.Refresh()
-
-        
-        
-    def _on_display_description_helper(self):
-        """
-            Show or Hide description
-            @param event: wx.EVT_RADIOBUTTON
-        """
-        
-        ## Show description
-        if self.description_hide.GetValue():
-            self.sizer_description.Clear(True)
-            
-        else:
-            description="Model contains no description"
-            if self.model!=None:
-                description = self.model.description
-            if description.lstrip().rstrip() =="": 
-                description="Model contains no description"
-            self.description = wx.StaticText( self,-1,str(description) )
-            self.sizer_description.Add( self.description, 1, wx.EXPAND | wx.ALL, 10 )
-           
-        self.Layout()
-    
-    
-    def _fill_range_sizer(self):
-        """
-            Fill the sizer containing the plotting range
-            add  access to npts
-        """
-        ##The following 3 lines are for Mac. Let JHC know before modifying..
-        title = "Plotted Q Range"
-        box_description= wx.StaticBox(self, -1,str(title))
-        boxsizer1 = wx.StaticBoxSizer(box_description, wx.VERTICAL)
-
-        sizer_npts= wx.GridSizer(1, 1,5, 5)    
-        self.npts    = self.ModelTextCtrl(self, -1,size=(_BOX_WIDTH,20), style=wx.TE_PROCESS_ENTER)
-        self.npts.SetValue(format_number(self.num_points))
-        self.npts.SetToolTipString("Number of point to plot.")
-        
-        sizer_npts.Add(wx.StaticText(self, -1, 'Npts'),1, wx.LEFT|wx.EXPAND|wx.ADJUST_MINSIZE, 13)        
-
-        sizer_npts.Add(self.npts,1,wx.LEFT|wx.EXPAND|wx.ADJUST_MINSIZE, 10) 
-        self._set_range_sizer( title=title, box_sizer=boxsizer1, object= sizer_npts)
-       
-       
-    def _on_select_model(self, event): 
-        """
-             call back for model selection
-        """    
-        self._on_select_model_helper() 
-      
-        self.set_model_param_sizer(self.model)                   
-       
-        #Reset dispersity that was not done in _on_select_model_helper() 
-        self._reset_dispersity()
-        #self.select_model(self.model)
-        qmin = float(self.qmin_x)
-        qmax = float(self.qmax_x)
-        qstep = float(self.num_points)
-        evt = ModelEventbox(model=self.model, qmin=qmin, qmax=qmax, qstep=qstep)
-        wx.PostEvent(self.parent, evt)  
-       
-    def _fill_model_sizer(self, sizer):
-        """
-            fill sizer containing model info
-        """
-        ##The following 3 lines are for Mac. Let JHC know before modifying..
-        title = "Model"
-        box_description= wx.StaticBox(self, -1,str(title))
-        boxsizer1 = wx.StaticBoxSizer(box_description, wx.VERTICAL)
-        
-        id = wx.NewId()
-        self.model_view =wx.Button(self,id,'View 2D', size=(80,23))
-        self.model_view.Bind(wx.EVT_BUTTON, self._onModel2D,id=id)
-        self.model_view.SetToolTipString("View model in 2D")
-        
-        ## class base method  to add view 2d button   
-        self._set_model_sizer(sizer=sizer,box_sizer=boxsizer1, title=title,object= self.model_view )    
-    
-  
-            
-    def _set_sizer_dispersion(self, dispersity):
-        """
-            draw sizer with gaussian, log or schulz dispersity parameters
-        """
-        self.fittable_param=[]
-        self.fixed_param=[]
-        self.orientation_params_disp=[]
-        #self.temp=[]
-       
-        self.sizer4_4.Clear(True)
-        if self.model==None:
-            ##no model is selected
-            return
-        if not self.enable_disp.GetValue():
-            ## the user didn't select dispersity display
-            return 
-        self._reset_dispersity()
-        # Create the dispersion objects
-        for item in self.model.dispersion.keys():
-            #disp_model =  GaussianDispersion()
-            disp_model = dispersity()
-            self._disp_obj_dict[item] = disp_model
-            self.model.set_dispersion(item, disp_model)
-            self.state._disp_obj_dict[item]= disp_model
-            
-            
-        ix=0
-        iy=1
-        disp = wx.StaticText(self, -1, 'Names')
-        self.sizer4_4.Add(disp,( iy, ix),(1,1), 
-                           wx.LEFT|wx.EXPAND|wx.ADJUST_MINSIZE, 15)
-        ix += 1 
-        values = wx.StaticText(self, -1, 'Sigmas (STD)')
-        self.sizer4_4.Add(values,( iy, ix),(1,1), wx.EXPAND|wx.ADJUST_MINSIZE, 0)
-       
-        ix += 1 
-        npts = wx.StaticText(self, -1, 'Npts')
-        self.sizer4_4.Add(npts,( iy, ix),(1,1), wx.EXPAND|wx.ADJUST_MINSIZE, 0)
-        ix += 1 
-        nsigmas = wx.StaticText(self, -1, 'Nsigmas')
-        self.sizer4_4.Add(nsigmas,( iy, ix),(1,1), wx.EXPAND|wx.ADJUST_MINSIZE, 0)
-        
-        for item in self.model.dispersion.keys():
-            if not item in self.model.orientation_params:
-                self.disp_cb_dict[item]= None
-                name1=item+".width"
-                name2=item+".npts"
-                name3=item+".nsigmas"
-                iy += 1
-                for p in self.model.dispersion[item].keys():
-                    if p=="width":
-                        ix = 0
-                        name = wx.StaticText(self, -1,  name1)
-                        self.sizer4_4.Add( name,( iy, ix),(1,1),  
-                                           wx.LEFT|wx.EXPAND|wx.ADJUST_MINSIZE, 15)
-                        ix = 1
-                        value= self.model.getParam(name1)
-                        ctl1 = self.ModelTextCtrl(self, -1, size=(_BOX_WIDTH,20),
-                                            style=wx.TE_PROCESS_ENTER)
-                        ctl1.SetValue(str (format_number(value)))
-                        self.sizer4_4.Add(ctl1, (iy,ix),(1,1), wx.EXPAND)
-                        self.fittable_param.append([None,name1,ctl1,None,
-                                                    None, None, None,None])
-                    elif p=="npts":
-                            ix =2
-                            value= self.model.getParam(name2)
-                            Tctl1 = self.ModelTextCtrl(self, -1, size=(_BOX_WIDTH/2,20),
-                                                style=wx.TE_PROCESS_ENTER)
-                            Tctl1.SetValue(str (format_number(value)))
-                            self.sizer4_4.Add(Tctl1, (iy,ix),(1,1),
-                                               wx.EXPAND|wx.ADJUST_MINSIZE, 0)
-                            self.fixed_param.append([None,name2, Tctl1,None,None,
-                                                      None, None,None])
-                    elif p=="nsigmas":
-                            ix =3 
-                            value= self.model.getParam(name3)
-                            Tctl2 = self.ModelTextCtrl(self, -1, size=(_BOX_WIDTH/2,20),
-                                                style=wx.TE_PROCESS_ENTER)
-                            Tctl2.SetValue(str (format_number(value)))
-                            self.sizer4_4.Add(Tctl2, (iy,ix),(1,1),
-                                               wx.EXPAND|wx.ADJUST_MINSIZE, 0)
-                            ix +=1
-                            self.sizer4_4.Add((20,20), (iy,ix),(1,1),
-                                               wx.EXPAND|wx.ADJUST_MINSIZE, 0)
-                            self.fixed_param.append([None,name3, Tctl2,
-                                                     None,None, None, None,None])
-        for item in self.model.dispersion.keys():
-            if item in self.model.orientation_params:
-                self.disp_cb_dict[item]= None
-                name1=item+".width"
-                name2=item+".npts"
-                name3=item+".nsigmas"
-                iy += 1
-                for p in self.model.dispersion[item].keys():
-                    if p=="width":
-                        ix = 0
-                        name = wx.StaticText(self, -1,  name1)
-                        self.sizer4_4.Add( name,( iy, ix),(1,1),  
-                                           wx.LEFT|wx.EXPAND|wx.ADJUST_MINSIZE, 15)
-                        if not self.enable2D:
-                            name.Hide()
-                        else:
-                            name.Show(True)
-                        ix = 1
-                        value= self.model.getParam(name1)
-                        ctl1 = self.ModelTextCtrl(self, -1, size=(_BOX_WIDTH,20),
-                                            style=wx.TE_PROCESS_ENTER)
-                        ctl1.SetValue(str (format_number(value)))
-                        if not self.enable2D:
-                            ctl1.Hide()
-                            ctl1.Disable()
-                        else:
-                            ctl1.Show(True)
-                            ctl1.Enable()
-                        self.sizer4_4.Add(ctl1, (iy,ix),(1,1), wx.EXPAND)
-                        self.fittable_param.append([None,name1,ctl1,None,
-                                                    None, None, None,None])
-                        self.orientation_params_disp.append([None,name1,ctl1,None,
-                                                    None, None, None,None])
-                    elif p=="npts":
-                            ix =2
-                            value= self.model.getParam(name2)
-                            Tctl1 = self.ModelTextCtrl(self, -1, size=(_BOX_WIDTH/2,20),
-                                                style=wx.TE_PROCESS_ENTER)
-                            Tctl1.SetValue(str (format_number(value)))
-                            if not self.enable2D:
-                                Tctl1.Hide()
-                                Tctl1.Disable()
-                            else:
-                                Tctl1.Show(True)
-                                Tctl1.Enable()
-                            self.sizer4_4.Add(Tctl1, (iy,ix),(1,1),
-                                               wx.EXPAND|wx.ADJUST_MINSIZE, 0)
-                            self.fixed_param.append([None,name2, Tctl1,None,None,
-                                                      None, None,None])
-                            self.orientation_params_disp.append([None,name2, Tctl1,None,None,
-                                                      None, None,None])
-                    elif p=="nsigmas":
-                            ix =3 
-                            value= self.model.getParam(name3)
-                            Tctl2 = self.ModelTextCtrl(self, -1, size=(_BOX_WIDTH/2,20),
-                                                style=wx.TE_PROCESS_ENTER)
-                            Tctl2.SetValue(str (format_number(value)))
-                            if not self.enable2D:
-                                Tctl2.Hide()
-                                Tctl2.Disable()
-                            else:
-                                Tctl2.Show(True)
-                                Tctl2.Enable()
-                            self.sizer4_4.Add(Tctl2, (iy,ix),(1,1),
-                                               wx.EXPAND|wx.ADJUST_MINSIZE, 0)
-                            ix +=1
-                            #self.sizer4_4.Add((20,20), (iy,ix),(1,1),
-                                               #wx.EXPAND|wx.ADJUST_MINSIZE, 0)
-                            self.fixed_param.append([None,name3, Tctl2,
-                                                     None,None, None, None,None])
-                            self.orientation_params_disp.append([None,name3, Tctl2,
-                                                     None,None, None, None,None])
-            
-        msg = " Selected Distribution: Gaussian"        
-        wx.PostEvent(self.parent, StatusEvent( status= msg )) 
-        self.state.disp_cb_dict = copy.deepcopy(self.disp_cb_dict)   
-        ix =0
-        iy +=1 
-        #self.sizer4_4.Add((20,20),(iy,ix),(1,1), wx.LEFT|wx.EXPAND|wx.ADJUST_MINSIZE, 15)   
-        self.sizer4_4.Layout()
-        self.sizer4.Layout()
-        self.SetScrollbars(20,20,25,65)
-             
-    def _set_model_sizer(self,sizer, box_sizer, title="", object=None):
-        """
-            Use lists to fill a sizer for model info
-        """
-        sizer.Clear(True)
-        ##For MAC, this should defined here.
-        if box_sizer == None:
-            box_description= wx.StaticBox(self, -1,str(title))
-            boxsizer1 = wx.StaticBoxSizer(box_description, wx.VERTICAL)
-        else:
-            boxsizer1 = box_sizer
-            
-        #--------------------------------------------------------
-        self.shape_rbutton = wx.RadioButton(self, -1, 'Shapes', style=wx.RB_GROUP)
-        self.shape_indep_rbutton = wx.RadioButton(self, -1, "Shape-Independent")
-        self.struct_rbutton = wx.RadioButton(self, -1, "Structure Factor ")
-        self.plugin_rbutton = wx.RadioButton(self, -1, "Customized Models")
-                
-        self.Bind( wx.EVT_RADIOBUTTON, self._show_combox,
-                            id= self.shape_rbutton.GetId() ) 
-        self.Bind( wx.EVT_RADIOBUTTON, self._show_combox,
-                            id= self.shape_indep_rbutton.GetId() ) 
-        self.Bind( wx.EVT_RADIOBUTTON, self._show_combox,
-                            id= self.struct_rbutton.GetId() ) 
-        self.Bind( wx.EVT_RADIOBUTTON, self._show_combox,
-                            id= self.plugin_rbutton.GetId() )  
-        #MAC needs SetValue
-        self.shape_rbutton.SetValue(True)
-      
-        sizer_radiobutton = wx.GridSizer(2, 2,5, 5)
-        sizer_radiobutton.Add(self.shape_rbutton)
-        sizer_radiobutton.Add(self.shape_indep_rbutton)
-        sizer_radiobutton.Add(self.plugin_rbutton)
-        sizer_radiobutton.Add(self.struct_rbutton)
-        
-        sizer_selection = wx.BoxSizer(wx.HORIZONTAL)
-        
-        self.text1 = wx.StaticText( self,-1,"" )
-        self.text2 = wx.StaticText( self,-1,"P(Q)*S(Q)" )
-        
-        
-        self.formfactorbox = wx.ComboBox(self, -1,style=wx.CB_READONLY)
-        if self.model!=None:
-            self.formfactorbox.SetValue(self.model.name)
-            
-            
-        self.structurebox = wx.ComboBox(self, -1,style=wx.CB_READONLY)
-        wx.EVT_COMBOBOX(self.formfactorbox,-1, self._on_select_model)
-        wx.EVT_COMBOBOX(self.structurebox,-1, self._on_select_model)
-        
-        ## fill combox box
-        if len(self.model_list_box)>0:
-            
-            self._populate_box( self.formfactorbox,self.model_list_box["Shapes"])
-       
-        if len(self.model_list_box)>0:
-            self._populate_box( self.structurebox,
-                                self.model_list_box["Structure Factors"])
-            self.structurebox.Insert("None", 0,None)
-            self.structurebox.SetSelection(0)
-            self.structurebox.Hide()
-            self.text2.Hide()
-            self.structurebox.Disable()
-            self.text2.Disable()
-             
-            if self.model.__class__ in self.model_list_box["P(Q)*S(Q)"]:
-                self.structurebox.Show()
-                self.text2.Show()
-                self.structurebox.Enable()
-                self.text2.Enable()            
-        
-        ## check model type to show sizer
-        if self.model !=None:
-            self._set_model_sizer_selection( self.model )
-        
-        sizer_selection.Add(self.text1)
-        sizer_selection.Add((5,5))
-        sizer_selection.Add(self.formfactorbox)
-        sizer_selection.Add((5,5))
-        sizer_selection.Add(self.text2)
-        sizer_selection.Add((5,5))
-        sizer_selection.Add(self.structurebox)
-        sizer_selection.Add((5,5))
-        
-        boxsizer1.Add( sizer_radiobutton )
-        boxsizer1.Add( (20,20))
-        boxsizer1.Add( sizer_selection )
-        if object !=None:
-            boxsizer1.Add( (-72,-72))
-            boxsizer1.Add( object,  0, wx.ALIGN_RIGHT| wx.RIGHT, 35)
-            boxsizer1.Add( (60,60))
-        #--------------------------------------------------------
-        sizer.Add(boxsizer1,0, wx.EXPAND | wx.ALL, 10)
-        sizer.Layout()
-        self.SetScrollbars(20,20,25,65)
-    def _onModel2D(self, event):
-        """
-         call manager to plot model in 2D
-        """
-        # If the 2D display is not currently enabled, plot the model in 2D 
-        # and set the enable2D flag.
-
-        if self.fitrange:
-            self.enable2D = True
- 
-        if self.enable2D:
-            self._draw_model()
-            self.model_view.Disable()
-           
-            n = self.disp_box.GetCurrentSelection()
-            dispersity= self.disp_box.GetClientData(n)
-            #TODO:Find a better way to reinitialize the parameters containers 
-            # when resetting the page and 2D view is enable
-            #self.set_model_param_sizer(self.model): called here is using a lot
-            #of for loops and redraw the sizer again .How to avoid it?
-            self.set_model_param_sizer(self.model)
-            
-            if len(self.orientation_params)>0:
-                for item in self.orientation_params:
-                    if item[2]!=None:      
-                        item[2].Enable()
-            # same as above why do we have to redraw the sizer of dispersity to get
-            # the appropriate value of parameters containers on reset page?
-            # Reset containers of dispersity parameters for the appropriate dispersity
-            #and model
-            if  self.disp_name.lower()in ["array","arraydispersion"]:                
-                self._set_sizer_arraydispersion()  
-            else:
-                self._set_sizer_dispersion(dispersity)
-                if len(self.orientation_params_disp)>0:
-                   
-                    for item in self.orientation_params_disp:
-                        if item[2]!=None:
-                            item[2].Enable()
-                            
-        self.state.enable2D =  copy.deepcopy(self.enable2D)
-        self.Layout()
-        ## post state to fit panel
-        #self._undo.Enable(True)
-        event = PageInfoEvent(page = self)
-        wx.PostEvent(self.parent, event)
-      
-    def _selectDlg(self):
-        """
-            open a dialog file to selected the customized dispersity 
-        """
-        import os
-        dlg = wx.FileDialog(self, "Choose a weight file",
-                                self._default_save_location , "", "*.*", wx.OPEN)
-        path = None
-        if dlg.ShowModal() == wx.ID_OK:
-            path = dlg.GetPath()
-        dlg.Destroy()
-        return path
-    
-    
-    def _reset_context_menu(self):
-        """
-            reset the context menu
-        """
-        for name, state in self.state.saved_states.iteritems():
-            self.number_saved_state += 1
-            ## Add item in the context menu
-            id = wx.NewId()
-            self.popUpMenu.Append(id,name, 'Save model and state %g'%self.number_saved_state)
-            wx.EVT_MENU(self, id, self.onResetModel)
-    
-    
-    def _reset_plotting_range(self, state):
-        """
-            Reset the plotting range to a given state
-        """
-        self.qmin.SetValue(str(state.qmin))
-        self.qmax.SetValue(str(state.qmax)) 
-        if self.state.npts!=None:
-            self.npts.SetValue(str(state.npts)) 
-            
-            
-    def _save_typeOfmodel(self):
-        """
-            save radiobutton containing the type model that can be selected
-        """
-        self.state.shape_rbutton = self.shape_rbutton.GetValue()
-        self.state.shape_indep_rbutton = self.shape_indep_rbutton.GetValue()
-        self.state.struct_rbutton = self.struct_rbutton.GetValue()
-        self.state.plugin_rbutton = self.plugin_rbutton.GetValue()
-        self.state.structurebox= self.structurebox.GetCurrentSelection()
-        self.state.formfactorbox = self.formfactorbox.GetCurrentSelection()
-       
-        #self._undo.Enable(True)
-        ## post state to fit panel
-        event = PageInfoEvent(page = self)
-        wx.PostEvent(self.parent, event)
-        
-        
-    def _save_plotting_range(self ):
-        """
-            save the state of plotting range 
-        """
-        self.state.qmin = self.qmin_x
-        self.state.qmax = self.qmax_x 
-        if self.npts!=None:
-            self.state.npts= self.num_points
-            
-            
-    def _onparamEnter_helper(self):
-        """
-             check if values entered by the user are changed and valid to replot 
-             model
-             use : _check_value_enter 
-        """
-        # Flag to register when a parameter has changed.      
-        is_modified = False
-        #self._undo.Enable(True)
-        if self.model !=None:
-            try:
-                is_modified =self._check_value_enter( self.fittable_param ,is_modified)
-                is_modified =self._check_value_enter( self.fixed_param ,is_modified)
-                is_modified =self._check_value_enter( self.parameters ,is_modified) 
-            except:
-                pass
-            #if is_modified:
-
-            # Here we should check whether the boundaries have been modified.
-            # If qmin and qmax have been modified, update qmin and qmax and 
-            # set the is_modified flag to True
-            if self._validate_qrange( self.qmin, self.qmax):
-                tempmin = float(self.qmin.GetValue())
-                if tempmin != self.qmin_x:
-                    self.qmin_x = tempmin
-                    is_modified = True
-                tempmax = float(self.qmax.GetValue())
-                if tempmax != self.qmax_x:
-                    self.qmax_x = tempmax
-                    is_modified = True
-                self.fitrange = True
-            else:
-                self.fitrange = False
-            if self.npts != None:
-                if check_float(self.npts):
-                    temp_npts = float(self.npts.GetValue())
-                    if temp_npts !=  self.num_points:
-                        self.num_points = temp_npts
-                        is_modified = True
-                else:
-                    msg= "Cannot Plot :Must enter a number!!!  "
-                    wx.PostEvent(self.parent, StatusEvent(status = msg ))
-                
-            
-            ## if any value is modify draw model with new value
-            if is_modified:
-                self.state_change= True
-                self._draw_model() 
-                self.Refresh()
-        return is_modified
-    
-    def _update_paramv_on_fit(self):
-        """
-             make sure that update param values just before the fitting
-        """
-        #flag for qmin qmax check values
-        flag =False
-        is_modified = False
-        ##So make sure that update param values on_Fit.
-        #self._undo.Enable(True)
-        if self.model !=None:           
-            ##Check the values
-            self._check_value_enter( self.fittable_param ,is_modified)
-            self._check_value_enter( self.fixed_param ,is_modified)
-            self._check_value_enter( self.parameters ,is_modified)
-
-            # If qmin and qmax have been modified, update qmin and qmax and 
-             # Here we should check whether the boundaries have been modified.
-            # If qmin and qmax have been modified, update qmin and qmax and 
-            # set the is_modified flag to True
-            if self._validate_qrange( self.qmin, self.qmax):
-                tempmin = float(self.qmin.GetValue())
-                if tempmin != self.qmin_x:
-                    self.qmin_x = tempmin
-                tempmax = float(self.qmax.GetValue())
-                if tempmax != self.qmax_x:
-                    self.qmax_x = tempmax
-                flag = True
-            else:
-                flag = False
-        else:
-            flag = False
-            msg= "Cannot Fit :Must select a model!!!  "
-            wx.PostEvent(self.parent, StatusEvent(status = msg ))
-        
-        return flag                           
-               
-    def _is_modified(self, is_modified):
-        """
-            return to self._is_modified
-        """
-        return is_modified
-                       
-    def _reset_parameters_state(self, listtorestore,statelist):
-        """
-            Reset the parameters at the given state
-        """
-        if len(statelist)==0 or  len(listtorestore)==0 :
-            return
-        if len(statelist)!=  len(listtorestore) :
-            return
-
-        for j in range(len(listtorestore)):
-            item_page = listtorestore[j]
-            item_page_info = statelist[j]
-            ##change the state of the check box for simple parameters
-            if item_page[0]!=None:               
-                item_page[0].SetValue(item_page_info[0])
-                
-            if item_page[2]!=None:
-                item_page[2].SetValue(item_page_info[2])
-                
-            if item_page[3]!=None:
-                ## show or hide text +/-
-                if item_page_info[2]:
-                    item_page[3].Show(True)
-                else:
-                    item_page[3].Hide()
-            if item_page[4]!=None:
-                ## show of hide the text crtl for fitting error
-                if item_page_info[4][0]:
-                    item_page[4].Show(True)
-                    item_page[4].SetValue(item_page_info[4][1])
-                else:
-                    item_page[3].Hide()
-            if item_page[5]!=None:
-                ## show of hide the text crtl for fitting error
-                if item_page_info[5][0]:
-                    item_page[5].Show(True)
-                    item_page[5].SetValue(item_page_info[5][1])
-                else:
-                    item_page[5].Hide()
-                    
-            if item_page[6]!=None:
-                ## show of hide the text crtl for fitting error
-                if item_page_info[6][0]:
-                    item_page[6].Show(True)
-                    item_page[6].SetValue(item_page_info[6][1])
-                else:
-                    item_page[6].Hide()
-                            
-                            
-    def _copy_parameters_state(self, listtocopy, statelist):
-        """
-            copy the state of button 
-            @param listtocopy: the list of check button to copy
-            @param statelist: list of state object to store the current state
-        """
-        if len(listtocopy)==0:
-            return
-       
-        for item in listtocopy:
-  
-            checkbox_state = None
-            if item[0]!= None:
-                checkbox_state= item[0].GetValue()
-            parameter_name = item[1]
-            parameter_value = None
-            if item[2]!=None:
-                parameter_value = item[2].GetValue()
-            static_text = None
-            if item[3]!=None:
-                static_text = item[3].IsShown()
-            error_value = None
-            error_state = None
-            if item[4]!= None:
-                error_value = item[4].GetValue()
-                error_state = item[4].IsShown()
-                
-            min_value = None
-            min_state = None
-            if item[5]!= None:
-                min_value = item[5].GetValue()
-                min_state = item[5].IsShown()
-                
-            max_value = None
-            max_state = None
-            if item[6]!= None:
-                max_value = item[6].GetValue()
-                max_state = item[6].IsShown()
-            unit=None
-            if item[7]!=None:
-                unit = item[7].GetLabel()
-               
-            statelist.append([checkbox_state, parameter_name, parameter_value,
-                              static_text ,[error_state,error_value],
-                                [min_state,min_value],[max_state , max_value],unit])
-           
-    def _set_model_sizer_selection(self, model):
-        """
-            Display the sizer according to the type of the current model
-        """
-        if model ==None:
-            self.formfactorbox.SetValue("")
-        if hasattr(model ,"s_model"):
-            
-            class_name= model.s_model.__class__
-            name= model.s_model.name
-            flag= name != "NoStructure"
-            if flag and (class_name in self.model_list_box["Structure Factors"]):
-                self.structurebox.Show()
-                self.text2.Show()                
-                self.structurebox.Enable()
-                self.text2.Enable()
-                items = self.structurebox.GetItems()
-                self.sizer1.Layout()
-                self.SetScrollbars(20,20,25,65)
-                for i in range(len(items)):
-                    if items[i]== str(name):
-                        self.structurebox.SetSelection(i)
-                        break
-                    
-        if hasattr(model ,"p_model"):
-            class_name = model.p_model.__class__
-            name = model.p_model.name
-            self.formfactorbox.Clear()
-            
-            for k, list in self.model_list_box.iteritems():
-                if k in["P(Q)*S(Q)","Shapes" ] and class_name in self.model_list_box["Shapes"]:
-                    self.shape_rbutton.SetValue(True)
-                    ## fill the form factor list with new model
-                    self._populate_box(self.formfactorbox,self.model_list_box["Shapes"])
-                    items = self.formfactorbox.GetItems()
-                    ## set comboxbox to the selected item
-                    for i in range(len(items)):
-                        if items[i]== str(name):
-                            self.formfactorbox.SetSelection(i)
-                            break
-                    return
-                elif k == "Shape-Independent":
-                    self.shape_indep_rbutton.SetValue(True)
-                elif k == "Structure Factors":
-                     self.struct_rbutton.SetValue(True)
-                else:
-                    self.plugin_rbutton.SetValue(True)
-               
-                if class_name in list:
-                    ## fill the form factor list with new model
-                    self._populate_box(self.formfactorbox, list)
-                    items = self.formfactorbox.GetItems()
-                    ## set comboxbox to the selected item
-                    for i in range(len(items)):
-                        if items[i]== str(name):
-                            self.formfactorbox.SetSelection(i)
-                            break
-                    break
-        else:
-
-            ## Select the model from the menu
-            class_name = model.__class__
-            name = model.name
-            self.formfactorbox.Clear()
-            items = self.formfactorbox.GetItems()
-    
-            for k, list in self.model_list_box.iteritems():          
-                if k in["P(Q)*S(Q)","Shapes" ] and class_name in self.model_list_box["Shapes"]:
-                    if class_name in self.model_list_box["P(Q)*S(Q)"]:
-                        self.structurebox.Show()
-                        self.text2.Show()
-                        self.structurebox.Enable()
-                        self.structurebox.SetSelection(0)
-                        self.text2.Enable()
-                    else:
-                        self.structurebox.Hide()
-                        self.text2.Hide()
-                        self.structurebox.Disable()
-                        self.structurebox.SetSelection(0)
-                        self.text2.Disable()
-                        
-                    self.shape_rbutton.SetValue(True)
-                    ## fill the form factor list with new model
-                    self._populate_box(self.formfactorbox,self.model_list_box["Shapes"])
-                    items = self.formfactorbox.GetItems()
-                    ## set comboxbox to the selected item
-                    for i in range(len(items)):
-                        if items[i]== str(name):
-                            self.formfactorbox.SetSelection(i)
-                            break
-                    return
-                elif k == "Shape-Independent":
-                    self.shape_indep_rbutton.SetValue(True)
-                elif k == "Structure Factors":
-                    self.struct_rbutton.SetValue(True)
-                else:
-                    self.plugin_rbutton.SetValue(True)
-                if class_name in list:
-                    self.structurebox.SetSelection(0)
-                    self.structurebox.Disable()
-                    self.text2.Disable()                    
-                    ## fill the form factor list with new model
-                    self._populate_box(self.formfactorbox, list)
-                    items = self.formfactorbox.GetItems()
-                    ## set comboxbox to the selected item
-                    for i in range(len(items)):
-                        if items[i]== str(name):
-                            self.formfactorbox.SetSelection(i)
-                            break
-                    break
-    
-    def _draw_model(self):
-        """
-            Method to draw or refresh a plotted model.
-            The method will use the data member from the model page
-            to build a call to the fitting perspective manager.
-            
-            [Note to coder: This way future changes will be done in only one place.] 
-        """
-        if self.model !=None:
-            temp_smear=None
-            if hasattr(self, "enable_smearer"):
-                if self.enable_smearer.GetValue():
-                    temp_smear= self.smearer
-            self.manager.draw_model(self.model, data=self.data,
-                                    smearer= temp_smear,
-                                    qmin=float(self.qmin_x), qmax=float(self.qmax_x),
-                                    qstep= float(self.num_points),
-                                    enable2D=self.enable2D) 
-        
-    def _set_model_sizer(self,sizer, box_sizer, title="", object=None):
-        """
-            Use lists to fill a sizer for model info
-        """
-       
-        sizer.Clear(True)
-        ##For MAC, this should defined here.
-        if box_sizer == None:
-            box_description= wx.StaticBox(self, -1,str(title))
-            boxsizer1 = wx.StaticBoxSizer(box_description, wx.VERTICAL)
-        else:
-            boxsizer1 = box_sizer
-            
-        #--------------------------------------------------------
-        self.shape_rbutton = wx.RadioButton(self, -1, 'Shapes', style=wx.RB_GROUP)
-        self.shape_indep_rbutton = wx.RadioButton(self, -1, "Shape-Independent")
-        self.struct_rbutton = wx.RadioButton(self, -1, "Structure Factor ")
-        self.plugin_rbutton = wx.RadioButton(self, -1, "Customized Models")
-                
-        self.Bind( wx.EVT_RADIOBUTTON, self._show_combox,
-                            id= self.shape_rbutton.GetId() ) 
-        self.Bind( wx.EVT_RADIOBUTTON, self._show_combox,
-                            id= self.shape_indep_rbutton.GetId() ) 
-        self.Bind( wx.EVT_RADIOBUTTON, self._show_combox,
-                            id= self.struct_rbutton.GetId() ) 
-        self.Bind( wx.EVT_RADIOBUTTON, self._show_combox,
-                            id= self.plugin_rbutton.GetId() )  
-        #MAC needs SetValue
-        self.shape_rbutton.SetValue(True)
-      
-        sizer_radiobutton = wx.GridSizer(2, 2,5, 5)
-        sizer_radiobutton.Add(self.shape_rbutton)
-        sizer_radiobutton.Add(self.shape_indep_rbutton)
-        sizer_radiobutton.Add(self.plugin_rbutton)
-        sizer_radiobutton.Add(self.struct_rbutton)
-        
-        sizer_selection = wx.BoxSizer(wx.HORIZONTAL)
-        
-        self.text1 = wx.StaticText( self,-1,"" )
-        self.text2 = wx.StaticText( self,-1,"P(Q)*S(Q)" )
-        
-        
-        self.formfactorbox = wx.ComboBox(self, -1,style=wx.CB_READONLY)
-        if self.model!=None:
-            self.formfactorbox.SetValue(self.model.name)
-            
-            
-        self.structurebox = wx.ComboBox(self, -1,style=wx.CB_READONLY)
-        wx.EVT_COMBOBOX(self.formfactorbox,-1, self._on_select_model)
-        wx.EVT_COMBOBOX(self.structurebox,-1, self._on_select_model)
-        
-        ## fill combox box
-        if len(self.model_list_box)>0:
-            self._populate_box( self.formfactorbox,self.model_list_box["Shapes"])
-       
-        if len(self.model_list_box)>0:
-            self._populate_box( self.structurebox,
-                                self.model_list_box["Structure Factors"])
-            self.structurebox.Insert("None", 0,None)
-            self.structurebox.SetSelection(0)
-            self.structurebox.Hide()
-            self.text2.Hide()
-            self.structurebox.Disable()
-            self.text2.Disable()
-             
-            if self.model.__class__ in self.model_list_box["P(Q)*S(Q)"]:
-                self.structurebox.Show()
-                self.text2.Show()
-                self.structurebox.Enable()
-                self.text2.Enable()            
-        
-        ## check model type to show sizer
-        if self.model !=None:
-            self._set_model_sizer_selection( self.model )
-        
-        sizer_selection.Add(self.text1)
-        sizer_selection.Add((5,5))
-        sizer_selection.Add(self.formfactorbox)
-        sizer_selection.Add((5,5))
-        sizer_selection.Add(self.text2)
-        sizer_selection.Add((5,5))
-        sizer_selection.Add(self.structurebox)
-        sizer_selection.Add((5,5))
-        
-        boxsizer1.Add( sizer_radiobutton )
-        boxsizer1.Add( (20,20))
-        boxsizer1.Add( sizer_selection )
-        if object !=None:
-            boxsizer1.Add( (-72,-72))
-            boxsizer1.Add( object,  0, wx.ALIGN_RIGHT| wx.RIGHT, 35)
-            boxsizer1.Add( (60,60))
-        #--------------------------------------------------------
-        sizer.Add(boxsizer1,0, wx.EXPAND | wx.ALL, 10)
-        sizer.Layout()
-        self.SetScrollbars(20,20,25,65)
-        
-    def _show_combox(self, event):
-        """
-            Show combox box associate with type of model selected
-        """
-        ## Don't want to populate combo box again if the event comes from check box
-        if self.shape_rbutton.GetValue()and\
-             event.GetEventObject()==self.shape_rbutton:
-            ##fill the combobox with form factor list
-            self.structurebox.SetSelection(0)
-            self.structurebox.Disable()
-            self.formfactorbox.Clear()
-            self._populate_box( self.formfactorbox,self.model_list_box["Shapes"])
-            
-        if self.shape_indep_rbutton.GetValue()and\
-             event.GetEventObject()==self.shape_indep_rbutton:
-            ##fill the combobox with shape independent  factor list
-            self.structurebox.SetSelection(0)
-            self.structurebox.Disable()
-            self.formfactorbox.Clear()
-            self._populate_box( self.formfactorbox,
-                                self.model_list_box["Shape-Independent"])
-            
-        if self.struct_rbutton.GetValue() and\
-             event.GetEventObject()==self.struct_rbutton:
-            ##fill the combobox with structure factor list
-            self.structurebox.SetSelection(0)
-            self.structurebox.Disable()
-            self.formfactorbox.Clear()
-            self._populate_box( self.formfactorbox,
-                                self.model_list_box["Structure Factors"])
-           
-        if self.plugin_rbutton.GetValue()and\
-             event.GetEventObject()==self.plugin_rbutton:
-           
-            ##fill the combobox with form factor list
-            self.structurebox.Disable()
-            self.formfactorbox.Clear()
-            self._populate_box( self.formfactorbox,
-                                self.model_list_box["Customized Models"])
-        
-        self._on_select_model(event=None)
-        self._save_typeOfmodel()
-        self.sizer4_4.Layout()
-        self.sizer4.Layout()
-        self.Layout()
-        self.Refresh()
-        self.SetScrollbars(20,20,25,65)
-            
-    def _populate_box(self, combobox, list):
-        """
-            fill combox box with dict item
-            @param list: contains item to fill the combox
-            item must model class
-        """
-        for models in list:
-            model= models()
-            name = model.__class__.__name__
-            if models.__name__!="NoStructure":
-                if hasattr(model, "name"):
-                    name = model.name
-                combobox.Append(name,models)
-     
-        return 0
-    
-    def _onparamEnter(self,event):
-        """ 
-            when enter value on panel redraw model according to changed
-        """
-        tcrtl= event.GetEventObject()
-        
-        #Clear msg if previously shown.
-        msg= ""
-        wx.PostEvent(self.parent, StatusEvent(status = msg ))
-        ## save current state
-        self.save_current_state()
-        if event !=None:
-            #self._undo.Enable(True)
-            event = PageInfoEvent(page = self)
-            wx.PostEvent(self.parent, event)
-              
-        if check_float(tcrtl):
-            
-            self._onparamEnter_helper()
-            #event.Skip()
-        else:
-            msg= "Cannot Plot :Must enter a number!!!  "
-            wx.PostEvent(self.parent, StatusEvent(status = msg ))
-            #event.Skip()
-            return 
-   
-    def _onQrangeEnter(self, event):
-        """
-            Check validity of value enter in the Q range field
-        """
-        
-        tcrtl= event.GetEventObject()
-        #Clear msg if previously shown.
-        msg= ""
-        wx.PostEvent(self.parent, StatusEvent(status = msg ))
-        # Flag to register when a parameter has changed.
-        is_modified = False
-        if tcrtl.GetValue().lstrip().rstrip()!="":
-            try:
-                value = float(tcrtl.GetValue())
-                tcrtl.SetBackgroundColour(wx.WHITE)
-
-                # If qmin and qmax have been modified, update qmin and qmax
-                if self._validate_qrange( self.qmin, self.qmax):
-                    tempmin = float(self.qmin.GetValue())
-                    if tempmin != self.qmin_x:
-                        self.qmin_x = tempmin
-                    tempmax = float(self.qmax.GetValue())
-                    if tempmax != self.qmax_x:
-                        self.qmax_x = tempmax
-                else:
-                    tcrtl.SetBackgroundColour("pink")
-                    msg= "Model Error:wrong value entered : %s"% sys.exc_value
-                    wx.PostEvent(self.parent, StatusEvent(status = msg ))
-                    return 
-                
-            except:
-                tcrtl.SetBackgroundColour("pink")
-                msg= "Model Error:wrong value entered : %s"% sys.exc_value
-                wx.PostEvent(self.parent, StatusEvent(status = msg ))
-                return 
-            #Check if # of points for theory model are valid(>0).
-            if self.npts != None:
-                if check_float(self.npts):
-                    temp_npts = float(self.npts.GetValue())
-                    if temp_npts !=  self.num_points:
-                        self.num_points = temp_npts
-                        is_modified = True
-                else:
-                    msg= "Cannot Plot :No npts in that Qrange!!!  "
-                    wx.PostEvent(self.parent, StatusEvent(status = msg ))
-           
-        else:
-           tcrtl.SetBackgroundColour("pink")
-           msg= "Model Error:wrong value entered!!!"
-           wx.PostEvent(self.parent, StatusEvent(status = msg ))
-           
-        #self._undo.Enable(True)
-        self.save_current_state()
-        event = PageInfoEvent(page = self)
-        wx.PostEvent(self.parent, event)
-        self.state_change= False
-     
-    def _on_select_model_helper(self): 
-        """
-             call back for model selection
-        """
-        ## reset dictionary containing reference to dispersion
-        self._disp_obj_dict = {}
-        self.disp_cb_dict ={}
-        
-        f_id = self.formfactorbox.GetCurrentSelection()
-        #For MAC
-        form_factor = None
-        if f_id >= 0:
-            form_factor = self.formfactorbox.GetClientData( f_id )
-
-        if not form_factor in  self.model_list_box["multiplication"]:
-            self.structurebox.Hide()
-            self.text2.Hide()           
-            self.structurebox.Disable()
-            self.structurebox.SetSelection(0)
-            self.text2.Disable()
-        else:
-            self.structurebox.Show()
-            self.text2.Show()
-            self.structurebox.Enable()
-            self.text2.Enable()
-           
-        s_id = self.structurebox.GetCurrentSelection()
-        struct_factor = self.structurebox.GetClientData( s_id )
-       
-        if  struct_factor !=None:
-            from sans.models.MultiplicationModel import MultiplicationModel
-            self.model= MultiplicationModel(form_factor(),struct_factor())
-            
-        else:
-            if form_factor != None:
-                self.model= form_factor()
-            else:
-                self.model = None
-                return self.model
-        
-        ## post state to fit panel
-        self.state.parameters =[]
-        self.state.model =self.model
-        self.disp_list =self.model.getDispParamList()
-        self.state.disp_list = self.disp_list
-        self.Layout()     
-        
-    def _check_value_enter(self, list, modified):
-        """
-            @param list: model parameter and panel info
-            each item of the list should be as follow:
-            item=[cb state, name, value, "+/-", error of fit, min, max , units]
-        """  
-        is_modified =  modified
-        if len(list)==0:
-            return is_modified
-        for item in list:
-            #skip angle parameters for 1D
-            if self.data.__class__.__name__ !="Data2D":
-                if item in self.orientation_params:
-                    continue
-            #try:
-            name = str(item[1])
-            
-            if string.find(name,".npts") ==-1 and string.find(name,".nsigmas")==-1:      
-                ## check model parameters range             
-                param_min= None
-                param_max= None
-               
-                ## check minimun value
-                if item[5]!= None and item[5]!= "":
-                    if item[5].GetValue().lstrip().rstrip()!="":
-                        try:
-                            
-                            param_min = float(item[5].GetValue())
-                            if not self._validate_qrange(item[5],item[2]):
-                                if numpy.isfinite(param_min):
-                                    item[2].SetValue(format_number(param_min))
-                            
-                            item[5].SetBackgroundColour(wx.WHITE)
-                            item[2].SetBackgroundColour(wx.WHITE)
-                                           
-                        except:
-                            msg = "Wrong Fit parameter range entered "
-                            wx.PostEvent(self.parent, StatusEvent(status = msg))
-                            raise ValueError, msg
-                        is_modified = True
-                ## check maximum value
-                if item[6]!= None and item[6]!= "":
-                    if item[6].GetValue().lstrip().rstrip()!="":
-                        try:                          
-                            param_max = float(item[6].GetValue())
-                            if not self._validate_qrange(item[2],item[6]):
-                                if numpy.isfinite(param_max):
-                                    item[2].SetValue(format_number(param_max))  
-                            
-                            item[6].SetBackgroundColour(wx.WHITE)
-                            item[2].SetBackgroundColour(wx.WHITE)
-                        except:
-                            msg = "Wrong Fit parameter range entered "
-                            wx.PostEvent(self.parent, StatusEvent(status = msg))
-                            raise ValueError, msg
-                        is_modified = True
-                
-                if param_min != None and param_max !=None:
-                    if not self._validate_qrange(item[5], item[6]):
-                        msg= "Wrong Fit range entered for parameter "
-                        msg+= "name %s of model %s "%(name, self.model.name)
-                        wx.PostEvent(self.parent, StatusEvent(status = msg))
-                
-                if name in self.model.details.keys():   
-                        self.model.details[name][1:3]= param_min,param_max
-                        is_modified = True
-              
-                else:
-                        self.model.details [name] = ["",param_min,param_max] 
-                        is_modified = True
-            try:     
-                value= float(item[2].GetValue())
-      
-                # If the value of the parameter has changed,
-                # +update the model and set the is_modified flag
-                if value != self.model.getParam(name) and numpy.isfinite(value):
-                    self.model.setParam(name,value)
-                    is_modified = True   
-            except:
-                msg = "Wrong Fit parameter value entered "
-                wx.PostEvent(self.parent, StatusEvent(status = msg))
-                
-        return is_modified 
-        
-    def _set_dipers_Param(self, event):
-        """
-            respond to self.enable_disp and self.disable_disp radio box.
-            The dispersity object is reset inside the model into Gaussian. 
-            When the user select yes , this method display a combo box for more selection
-            when the user selects No,the combo box disappears.
-            Redraw the model with the default dispersity (Gaussian)
-        """
-        
-        self._reset_dispersity()
-    
-        if self.model ==None:
-            self.model_disp.Hide()
-            self.disp_box.Hide()
-            self.sizer4_4.Clear(True)
-            return
-
-        if self.enable_disp.GetValue():
-            self.model_disp.Show(True)
-            self.disp_box.Show(True)
-            ## layout for model containing no dispersity parameters
-            
-            self.disp_list= self.model.getDispParamList()
-             
-            if len(self.disp_list)==0 and len(self.disp_cb_dict)==0:
-                self._layout_sizer_noDipers()  
-            else:
-                ## set gaussian sizer 
-                self._on_select_Disp(event=None)
-        else:
-            self.model_disp.Hide()
-            self.disp_box.Hide()
-            self.disp_box.SetSelection(0) 
-            self.sizer4_4.Clear(True)
-            
-        ## post state to fit panel 
-        self.save_current_state()
-        if event !=None:
-            #self._undo.Enable(True)
-            event = PageInfoEvent(page = self)
-            wx.PostEvent(self.parent, event)
-        #draw the model with the current dispersity
-        self._draw_model()
-        self.sizer4_4.Layout()
-        self.sizer5.Layout()
-        self.Layout()
-        self.Refresh()      
-          
-    def _layout_sizer_noDipers(self):
-        """
-            Draw a sizer with no dispersity info
-        """
-        ix=0
-        iy=1
-        self.fittable_param=[]
-        self.fixed_param=[]
-        self.orientation_params_disp=[]
-        
-        self.model_disp.Hide()
-        self.disp_box.Hide()
-        self.sizer4_4.Clear(True)
-        model_disp = wx.StaticText(self, -1, 'No PolyDispersity for this model')
-        self.sizer4_4.Add(model_disp,( iy, ix),(1,1),  wx.LEFT|wx.EXPAND|wx.ADJUST_MINSIZE, 15)
-        self.sizer4_4.Layout()
-        self.sizer4.Layout()
-        self.SetScrollbars(20,20,25,65)
-      
-    def _reset_dispersity(self):
-        """
-             put gaussian dispersity into current model
-        """
-        if len(self.param_toFit)>0:
-            for item in self.fittable_param:
-                if item in self.param_toFit:
-                    self.param_toFit.remove(item)
-
-            for item in self.orientation_params_disp:
-                if item in self.param_toFit:
-                    self.param_toFit.remove(item)
-         
-        self.fittable_param=[]
-        self.fixed_param=[]
-        self.orientation_params_disp=[]
-        self.values=[]
-        self.weights=[]
-      
-        from sans.models.dispersion_models import GaussianDispersion, ArrayDispersion
-        if len(self.disp_cb_dict)==0:
-            self.save_current_state()
-            self.sizer4_4.Clear(True)
-            self.Layout()
- 
-            return 
-        if (len(self.disp_cb_dict)>0) :
-            for p in self.disp_cb_dict:
-                # The parameter was un-selected. Go back to Gaussian model (with 0 pts)                    
-                disp_model = GaussianDispersion()
-               
-                self._disp_obj_dict[p] = disp_model
-                # Set the new model as the dispersion object for the selected parameter
-                try:
-                   self.model.set_dispersion(p, disp_model)
-                except:
-
-                    pass
-
-        ## save state into
-        self.save_current_state()
-        self.Layout()  
-        self.Refresh()
-                  
-    def _on_select_Disp(self,event):
-        """
-             allow selecting different dispersion
-             self.disp_list should change type later .now only gaussian
-        """
-        n = self.disp_box.GetCurrentSelection()
-        name = self.disp_box.GetValue()
-        dispersity= self.disp_box.GetClientData(n)
-        self.disp_name = name
-        
-        if name.lower() == "array":
-            self._set_sizer_arraydispersion()
-        else:
-            self._set_sizer_dispersion(dispersity= dispersity)
-            
-        self.state.disp_box= n
-        ## Redraw the model
-        self._draw_model() 
-        #self._undo.Enable(True)
-        event = PageInfoEvent(page = self)
-        wx.PostEvent(self.parent, event)
-        
-        self.sizer4_4.Layout()
-        self.sizer4.Layout()
-        self.SetScrollbars(20,20,25,65)
-        
-    def _set_sizer_arraydispersion(self):
-        """
-            draw sizer with array dispersity  parameters
-        """
-        
-        if len(self.param_toFit)>0:
-            for item in self.fittable_param:
-                if item in self.param_toFit:
-                    self.param_toFit.remove(item)
-            for item in self.orientation_params_disp:
-                if item in self.param_toFit:
-                    self.param_toFit.remove(item)
-        for item in self.model.details.keys():
-            if item in self.model.fixed:
-                del self.model.details [item]                           
-
-        self.fittable_param=[]
-        self.fixed_param=[]
-        self.orientation_params_disp=[]
-        self.sizer4_4.Clear(True) 
-        self._reset_dispersity()
-        ix=0
-        iy=1     
-        disp1 = wx.StaticText(self, -1, 'Array Dispersion')
-        self.sizer4_4.Add(disp1,( iy, ix),(1,1),  wx.LEFT|wx.EXPAND|wx.ADJUST_MINSIZE, 15)
-        
-        # Look for model parameters to which we can apply an ArrayDispersion model
-        # Add a check box for each parameter.
-        self.disp_cb_dict = {}
-        ix+=1 
-        self.noDisper_rbox = wx.RadioButton(self, -1,"None", (10, 10),style= wx.RB_GROUP)
-        self.Bind(wx.EVT_RADIOBUTTON,self.select_disp_angle , id=self.noDisper_rbox.GetId())
-        #MAC needs SetValue
-        self.noDisper_rbox.SetValue(True)
-        self.sizer4_4.Add(self.noDisper_rbox, (iy, ix),
-                           (1,1), wx.EXPAND|wx.ADJUST_MINSIZE, 0)
-        
-        for p in self.model.dispersion.keys():
-            if not p in self.model.orientation_params:
-                ix+=1 
-                self.disp_cb_dict[p] = wx.RadioButton(self, -1, p, (10, 10))
-                self.state.disp_cb_dict[p]=  self.disp_cb_dict[p].GetValue()
-                self.Bind(wx.EVT_RADIOBUTTON, self.select_disp_angle, id=self.disp_cb_dict[p].GetId())
-                self.sizer4_4.Add(self.disp_cb_dict[p], (iy, ix), (1,1), wx.EXPAND|wx.ADJUST_MINSIZE, 0)
-        
-        for p in self.model.dispersion.keys():
-            if p in self.model.orientation_params:
-                ix+=1 
-                self.disp_cb_dict[p] = wx.RadioButton(self, -1, p, (10, 10))
-                self.state.disp_cb_dict[p]=  self.disp_cb_dict[p].GetValue()
-                if not (self.enable2D or self.data.__class__.__name__ =="Data2D"):
-                    self.disp_cb_dict[p].Hide()
-                else:
-                    self.disp_cb_dict[p].Show(True)
-                self.Bind(wx.EVT_RADIOBUTTON, self.select_disp_angle, id=self.disp_cb_dict[p].GetId())
-                self.sizer4_4.Add(self.disp_cb_dict[p], (iy, ix), (1,1), wx.EXPAND|wx.ADJUST_MINSIZE, 0)
-
-
-        ix =0
-        iy +=1 
-        self.sizer4_4.Add((20,20),(iy,ix),(1,1), wx.LEFT|wx.EXPAND|wx.ADJUST_MINSIZE, 15)        
-        self.Layout()
-
-        self.state.orientation_params =[]
-        self.state.orientation_params_disp =[]
-        self.state.parameters =[]
-        self.state.fittable_param =[]
-        self.state.fixed_param =[]
-        
-        ## save checkbutton state and txtcrtl values
-        
-        self._copy_parameters_state(self.orientation_params,
-                                     self.state.orientation_params)
-
-        self._copy_parameters_state(self.orientation_params_disp,
-                                     self.state.orientation_params_disp)
-        
-        self._copy_parameters_state(self.parameters, self.state.parameters)
-        self._copy_parameters_state(self.fittable_param, self.state.fittable_param)
-        self._copy_parameters_state(self.fixed_param, self.state.fixed_param)
-        
-        ## post state to fit panel
-        event = PageInfoEvent(page = self)
-        wx.PostEvent(self.parent, event)
-        
-    def _set_range_sizer(self, title, box_sizer=None, object1=None,object=None):
-        """
-            Fill the Q range sizer
-        """
-        self.sizer5.Clear(True)
-        #--------------------------------------------------------------
-        if box_sizer == None:
-            box_description= wx.StaticBox(self, -1,str(title))
-            boxsizer1 = wx.StaticBoxSizer(box_description, wx.VERTICAL)
-        else:
-            #for MAC
-            boxsizer1 = box_sizer
-
-        self.qmin    = self.ModelTextCtrl(self, -1,size=(_BOX_WIDTH,20),style=wx.TE_PROCESS_ENTER,
-                                            kill_focus_callback = self._onQrangeEnter,
-                                            text_enter_callback = self._onQrangeEnter)
-        self.qmin.SetValue(str(self.qmin_x))
-        self.qmin.SetToolTipString("Minimun value of Q in linear scale.")
-     
-        self.qmax    = self.ModelTextCtrl(self, -1,size=(_BOX_WIDTH,20),style=wx.TE_PROCESS_ENTER,
-                                            kill_focus_callback = self._onQrangeEnter,
-                                            text_enter_callback = self._onQrangeEnter)
-        self.qmax.SetValue(str(self.qmax_x))
-        self.qmax.SetToolTipString("Maximum value of Q in linear scale.")
-        
-        id = wx.NewId()
-        self.reset_qrange =wx.Button(self,id,'Reset',size=(70,23))
-      
-        self.reset_qrange.Bind(wx.EVT_BUTTON, self.on_reset_clicked,id=id)
-        self.reset_qrange.SetToolTipString("Reset Q range to the default values")
-     
-        sizer_horizontal=wx.BoxSizer(wx.HORIZONTAL)
-        sizer= wx.GridSizer(3, 3,2, 5)
-        
-        sizer.Add(wx.StaticText(self, -1, '    Q range'))     
-        sizer.Add(wx.StaticText(self, -1, ' Min'))
-        sizer.Add(wx.StaticText(self, -1, ' Max'))
-        sizer.Add(self.reset_qrange)   
-             
-        sizer.Add(self.qmin)
-        sizer.Add(self.qmax)
-        sizer_horizontal.Add(sizer)
-        if object!=None:
-            sizer_horizontal.Add(object)
-        
-        if object1!=None:
-           boxsizer1.Add(object1) 
-           boxsizer1.Add((10,10))
-        boxsizer1.Add(sizer_horizontal)
-        ## save state
-        self.save_current_state()
-        #----------------------------------------------------------------
-        self.sizer5.Add(boxsizer1,0, wx.EXPAND | wx.ALL, 10)
-        self.sizer5.Layout()
-
-    def _fill_save_sizer(self):
-        """
-            Draw the layout for saving option
-        """
-        # Skipping save state functionality for release 0.9.0
-        return
-    
-        self.sizer6.Clear(True)
-        box_description= wx.StaticBox(self, -1,"Save Model")
-        boxsizer1 = wx.StaticBoxSizer(box_description, wx.VERTICAL)
-        sizer_save = wx.BoxSizer(wx.HORIZONTAL)
-        
-        self.btSave_title = wx.StaticText(self, -1, 'Save the current Model')
-        self.btSave = wx.Button(self,wx.NewId(),'Save')
-        self.btSave.Bind(wx.EVT_BUTTON, self.onSave,id= self.btSave.GetId())
-        self.btSave.SetToolTipString("Save the current Model")
-        
-        sizer_save.Add(self.btSave_title)  
-        sizer_save.Add((20,20),0, wx.LEFT|wx.RIGHT|wx.EXPAND,45)  
-             
-        sizer_save.Add(self.btSave)     
-        
-        boxsizer1.Add(sizer_save)
-        self.sizer6.Add(boxsizer1,0, wx.EXPAND | wx.ALL, 10)
-        self.sizer6.Layout()
-        self.SetScrollbars(20,20,25,65)
-        
-    def _lay_out(self):
-        """
-            returns self.Layout
-            Note: Mac seems to like this better when self.Layout is called after fitting.
-        """
-        self._sleep4sec()
-        self.Layout()
-        #self._sleep4sec()
-        return 
-    
-    def _sleep4sec(self):
-        """
-            sleep for 1 sec only applied on Mac
-            Note: This 1sec helps for Mac not to crash on self.:ayout after self._draw_model
-        """
-        if ON_MAC == True:
-            time.sleep(1)
-             
-class HelpWindow(wx.Frame):
-    def __init__(self, parent, id, title):
-        wx.Frame.__init__(self, parent, id, title, size=(570, 400))
-       
-        from sans.models.CylinderModel import CylinderModel
-        model = CylinderModel()
-        #from sans.models.LineModel import LineModel
-        #model = LineModel()
-        from fitpanel import PageInfo
-        myinfo = PageInfo(self,model)
-        from models import ModelList
-        mylist= ModelList()
-        
-        from sans.models.SphereModel import SphereModel
-        from sans.models.SquareWellStructure import SquareWellStructure
-        from sans.models.DebyeModel import DebyeModel
-        from sans.models.LineModel import LineModel
-        name= "shapes"
-        list1= [SphereModel]
-        mylist.set_list( name, list1)
-        
-        name= "Shape-independent"
-        list1= [DebyeModel]
-        mylist.set_list( name, list1)
-        
-        name= "Structure Factors"
-        list1= [SquareWellStructure]
-        mylist.set_list( name, list1)
-        
-        name= "Added models"
-        list1= [LineModel]
-        mylist.set_list( name, list1)
-        
-        myinfo.model_list_box = mylist.get_list()
-        
-        self.page = ModelPage(self, myinfo) 
-        
-        
-        
-        self.Centre()
-        self.Show(True)
-
-
-   
-if __name__=="__main__":
-    app = wx.App()
-    HelpWindow(None, -1, 'HelpWindow')
-    app.MainLoop()
-                
