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Commit	Line	Data
	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 panel import *
	9
	10	# Undo/redo classes
	11	class UndoManager:
	12	# Undo/redo stacks
	13	undo = []
	14	redo = []
	15	def RegisterUndo(self, undoObj):
	16	self.undo.append(undoObj)
	17	for i in self.redo: i.destroy()
	18	self.redo = []
	19	def Undo(self):
	20	undoObj = self.undo.pop()
	21	undoObj.undo()
	22	self.redo.append(undoObj)
	23	g.frame.modified = True
	24	g.frame.SetStatusText('Undone')
	25	def Redo(self):
	26	undoObj = self.redo.pop()
	27	undoObj.redo()
	28	self.undo.append(undoObj)
	29	g.frame.modified = True
	30	g.frame.SetStatusText('Redone')
	31	def Clear(self):
	32	for i in self.undo: i.destroy()
	33	self.undo = []
	34	for i in self.redo: i.destroy()
	35	self.redo = []
	36	def CanUndo(self):
	37	return not not self.undo
	38	def CanRedo(self):
	39	return not not self.redo
	40
	41	class UndoCutDelete:
	42	def __init__(self, itemIndex, parent, elem):
	43	self.itemIndex = itemIndex
	44	self.parent = parent
	45	self.elem = elem
	46	def destroy(self):
	47	if self.elem: self.elem.unlink()
	48	def undo(self):
	49	item = g.tree.InsertNode(g.tree.ItemAtFullIndex(self.itemIndex[:-1]),
	50	self.parent, self.elem,
	51	g.tree.ItemAtFullIndex(self.itemIndex))
	52	# Scroll to show new item (!!! redundant?)
	53	g.tree.EnsureVisible(item)
	54	g.tree.SelectItem(item)
	55	self.elem = None
	56	# Update testWin if needed
	57	if g.testWin and g.tree.IsHighlatable(item):
	58	if g.conf.autoRefresh:
	59	g.tree.needUpdate = True
	60	g.tree.pendingHighLight = item
	61	else:
	62	g.tree.pendingHighLight = None
	63	def redo(self):
	64	item = g.tree.ItemAtFullIndex(self.itemIndex)
	65	# Delete testWin?
	66	if g.testWin:
	67	# If deleting top-level item, delete testWin
	68	if item == g.testWin.item:
	69	g.testWin.Destroy()
	70	g.testWin = None
	71	else:
	72	# Remove highlight, update testWin
	73	if g.testWin.highLight:
	74	g.testWin.highLight.Remove()
	75	g.tree.needUpdate = True
	76	self.elem = g.tree.RemoveLeaf(item)
	77	g.tree.Unselect()
	78	g.panel.Clear()
	79
	80	class UndoPasteCreate:
	81	def __init__(self, itemParent, parent, item, selected):
	82	self.itemParentIndex = g.tree.ItemFullIndex(itemParent)
	83	self.parent = parent
	84	self.itemIndex = g.tree.ItemFullIndex(item) # pasted item
	85	self.selectedIndex = g.tree.ItemFullIndex(selected) # maybe different from item
	86	self.elem = None
	87	def destroy(self):
	88	if self.elem: self.elem.unlink()
	89	def undo(self):
	90	self.elem = g.tree.RemoveLeaf(g.tree.ItemAtFullIndex(self.itemIndex))
	91	# Restore old selection
	92	selected = g.tree.ItemAtFullIndex(self.selectedIndex)
	93	g.tree.EnsureVisible(selected)
	94	g.tree.SelectItem(selected)
	95	# Delete testWin?
	96	if g.testWin:
	97	# If deleting top-level item, delete testWin
	98	if selected == g.testWin.item:
	99	g.testWin.Destroy()
	100	g.testWin = None
	101	else:
	102	# Remove highlight, update testWin
	103	if g.testWin.highLight:
	104	g.testWin.highLight.Remove()
	105	g.tree.needUpdate = True
	106	def redo(self):
	107	item = g.tree.InsertNode(g.tree.ItemAtFullIndex(self.itemParentIndex),
	108	self.parent, self.elem,
	109	g.tree.ItemAtFullIndex(self.itemIndex))
	110	# Scroll to show new item
	111	g.tree.EnsureVisible(item)
	112	g.tree.SelectItem(item)
	113	self.elem = None
	114	# Update testWin if needed
	115	if g.testWin and g.tree.IsHighlatable(item):
	116	if g.conf.autoRefresh:
	117	g.tree.needUpdate = True
	118	g.tree.pendingHighLight = item
	119	else:
	120	g.tree.pendingHighLight = None
	121
	122	class UndoEdit:
	123	def __init__(self):
	124	self.pages = map(ParamPage.GetState, g.panel.pages)
	125	self.selectedIndex = g.tree.ItemFullIndex(g.tree.GetSelection())
	126	def destroy(self):
	127	pass
	128	# Update test view
	129	def update(self, selected):
	130	g.tree.Apply(g.tree.GetPyData(selected), selected)
	131	# Update view
	132	if g.testWin:
	133	if g.testWin.highLight:
	134	g.testWin.highLight.Remove()
	135	g.tree.pendingHighLight = selected
	136	if g.testWin:
	137	g.tree.needUpdate = True
	138	def undo(self):
	139	# Restore selection
	140	selected = g.tree.ItemAtFullIndex(self.selectedIndex)
	141	if selected != g.tree.GetSelection():
	142	g.tree.SelectItem(selected)
	143	# Save current state for redo
	144	map(ParamPage.SaveState, g.panel.pages)
	145	pages = map(ParamPage.GetState, g.panel.pages)
	146	map(ParamPage.SetState, g.panel.pages, self.pages)
	147	self.pages = pages
	148	self.update(selected)
	149	def redo(self):
	150	self.undo()
	151	self.update(g.tree.GetSelection())