wxPython/wx/tools/XRCed/undo.py

   1 # Name:         undo.py
   2 # Purpose:      XRC editor, undo/redo module
   3 # Author:       Roman Rolinsky <rolinsky@mema.ucl.ac.be>
   4 # Created:      01.12.2002
   5 # RCS-ID:       $Id$
   6
   7 from globals import *
   8 from xxx import MakeXXXFromDOM
   9 #from panel import *
  10
  11 # Undo/redo classes
  12 class UndoManager:
  13     # Undo/redo stacks
  14     undo = []
  15     redo = []
  16     def RegisterUndo(self, undoObj):
  17         self.undo.append(undoObj)
  18         for i in self.redo: i.destroy()
  19         self.redo = []
  20     def Undo(self):
  21         undoObj = self.undo.pop()
  22         undoObj.undo()
  23         self.redo.append(undoObj)
  24         g.frame.SetModified()
  25         g.frame.SetStatusText('Undone')
  26     def Redo(self):
  27         undoObj = self.redo.pop()
  28         undoObj.redo()
  29         self.undo.append(undoObj)
  30         g.frame.SetModified()
  31         g.frame.SetStatusText('Redone')
  32     def Clear(self):
  33         for i in self.undo: i.destroy()
  34         self.undo = []
  35         for i in self.redo: i.destroy()
  36         self.redo = []
  37     def CanUndo(self):
  38         return not not self.undo
  39     def CanRedo(self):
  40         return not not self.redo
  41
  42 class UndoCutDelete:
  43     def __init__(self, itemIndex, parent, elem):
  44         self.itemIndex = itemIndex
  45         self.parent = parent
  46         self.elem = elem
  47     def destroy(self):
  48         if self.elem: self.elem.unlink()
  49     def undo(self):
  50         item = g.tree.InsertNode(g.tree.ItemAtFullIndex(self.itemIndex[:-1]),
  51                                  self.parent, self.elem,
  52                                  g.tree.ItemAtFullIndex(self.itemIndex))
  53         # Scroll to show new item (!!! redundant?)
  54         g.tree.EnsureVisible(item)
  55         g.tree.SelectItem(item)
  56         self.elem = None
  57         # Update testWin if needed
  58         if g.testWin and g.tree.IsHighlatable(item):
  59             if g.conf.autoRefresh:
  60                 g.tree.needUpdate = True
  61                 g.tree.pendingHighLight = item
  62             else:
  63                 g.tree.pendingHighLight = None
  64     def redo(self):
  65         item = g.tree.ItemAtFullIndex(self.itemIndex)
  66         # Delete testWin?
  67         if g.testWin:
  68             # If deleting top-level item, delete testWin
  69             if item == g.testWin.item:
  70                 g.testWin.Destroy()
  71                 g.testWin = None
  72             else:
  73                 # Remove highlight, update testWin
  74                 if g.testWin.highLight:
  75                     g.testWin.highLight.Remove()
  76                 g.tree.needUpdate = True
  77         self.elem = g.tree.RemoveLeaf(item)
  78         g.tree.UnselectAll()
  79         g.panel.Clear()
  80
  81 class UndoPasteCreate:
  82     def __init__(self, itemParent, parent, item, selected):
  83         self.itemParentIndex = g.tree.ItemFullIndex(itemParent)
  84         self.parent = parent
  85         self.itemIndex = g.tree.ItemFullIndex(item) # pasted item
  86         self.selectedIndex = g.tree.ItemFullIndex(selected) # maybe different from item
  87         self.elem = None
  88     def destroy(self):
  89         if self.elem: self.elem.unlink()
  90     def undo(self):
  91         self.elem = g.tree.RemoveLeaf(g.tree.ItemAtFullIndex(self.itemIndex))
  92         # Restore old selection
  93         selected = g.tree.ItemAtFullIndex(self.selectedIndex)
  94         g.tree.EnsureVisible(selected)
  95         g.tree.SelectItem(selected)
  96         # Delete testWin?
  97         if g.testWin:
  98             # If deleting top-level item, delete testWin
  99             if selected == g.testWin.item:
 100                 g.testWin.Destroy()
 101                 g.testWin = None
 102             else:
 103                 # Remove highlight, update testWin
 104                 if g.testWin.highLight:
 105                     g.testWin.highLight.Remove()
 106                 g.tree.needUpdate = True
 107     def redo(self):
 108         item = g.tree.InsertNode(g.tree.ItemAtFullIndex(self.itemParentIndex),
 109                                  self.parent, self.elem,
 110                                  g.tree.ItemAtFullIndex(self.itemIndex))
 111         # Scroll to show new item
 112         g.tree.EnsureVisible(item)
 113         g.tree.SelectItem(item)
 114         self.elem = None
 115         # Update testWin if needed
 116         if g.testWin and g.tree.IsHighlatable(item):
 117             if g.conf.autoRefresh:
 118                 g.tree.needUpdate = True
 119                 g.tree.pendingHighLight = item
 120             else:
 121                 g.tree.pendingHighLight = None
 122
 123 class UndoReplace:
 124     def __init__(self, item):
 125         self.itemIndex = g.tree.ItemFullIndex(item)
 126         self.xxx = g.tree.GetPyData(item)
 127     def destroy(self):
 128         if self.xxx: self.xxx.element.unlink()
 129     def undo(self):
 130         print 'Sorry, UndoReplace is not yet implemented.'
 131         return
 132         item = g.tree.ItemAtFullIndex(self.itemIndex)
 133         xxx = g.tree.GetPyData(item)
 134         # Replace with old element
 135         parent = xxx.parent.element
 136         if xxx is self.xxx:   # sizeritem or notebookpage - replace child
 137             parent.replaceChild(self.xxx.child.element, xxx.child.element)
 138         else:
 139             parent.replaceChild(self.xxx.element, xxx.element)
 140         self.xxx.parent = xxx.parent
 141         xxx = self.xxx
 142         g.tree.SetPyData(item, xxx)
 143         g.tree.SetItemText(item, xxx.treeName())
 144         g.tree.SetItemImage(item, xxx.treeImage())
 145
 146         # Update panel
 147         g.panel.SetData(xxx)
 148         # Update tools
 149         g.tools.UpdateUI()
 150         g.tree.EnsureVisible(item)
 151         g.tree.SelectItem(item)
 152         # Delete testWin?
 153         if g.testWin:
 154             # If deleting top-level item, delete testWin
 155             if selected == g.testWin.item:
 156                 g.testWin.Destroy()
 157                 g.testWin = None
 158             else:
 159                 # Remove highlight, update testWin
 160                 if g.testWin.highLight:
 161                     g.testWin.highLight.Remove()
 162                 g.tree.needUpdate = True
 163     def redo(self):
 164         return
 165
 166 class UndoEdit:
 167     def __init__(self):
 168         self.pages = map(ParamPage.GetState, g.panel.pages)
 169         self.selectedIndex = g.tree.ItemFullIndex(g.tree.GetSelection())
 170     def destroy(self):
 171         pass
 172     # Update test view
 173     def update(self, selected):
 174         g.tree.Apply(g.tree.GetPyData(selected), selected)
 175         # Update view
 176         if g.testWin:
 177             if g.testWin.highLight:
 178                 g.testWin.highLight.Remove()
 179             g.tree.pendingHighLight = selected
 180         if g.testWin:
 181             g.tree.needUpdate = True
 182     def undo(self):
 183         # Restore selection
 184         selected = g.tree.ItemAtFullIndex(self.selectedIndex)
 185         if selected != g.tree.GetSelection():
 186             g.tree.SelectItem(selected)
 187         # Save current state for redo
 188         map(ParamPage.SaveState, g.panel.pages)
 189         pages = map(ParamPage.GetState, g.panel.pages)
 190         map(ParamPage.SetState, g.panel.pages, self.pages)
 191         self.pages = pages
 192         self.update(selected)
 193     def redo(self):
 194         self.undo()
 195         self.update(g.tree.GetSelection())