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89 lines
3.2 KiB
Python
89 lines
3.2 KiB
Python
#!/usr/bin/env python3
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#
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# MiRCARTCanvasJournal.py -- XXX
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# Copyright (c) 2018 Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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#
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class MiRCARTCanvasJournal():
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"""XXX"""
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patchesCursor = patchesUndo = patchesUndoLevel = None
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# {{{ popCursor(self): XXX
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def popCursor(self):
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if len(self.patchesCursor):
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patchesCursor = self.patchesCursor
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self.patchesCursor = []
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return patchesCursor
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else:
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return []
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# }}}
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# {{{ popRedo(self): XXX
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def popRedo(self):
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if self.patchesUndoLevel > 0:
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self.patchesUndoLevel -= 1
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patches = self.patchesUndo[self.patchesUndoLevel]
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return patches[1]
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else:
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return []
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# }}}
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# {{{ popUndo(self): XXX
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def popUndo(self):
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if self.patchesUndo[self.patchesUndoLevel] != None:
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patches = self.patchesUndo[self.patchesUndoLevel]
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self.patchesUndoLevel += 1
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return patches[0]
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else:
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return []
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# }}}
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# {{{ pushCursor(self, patches): XXX
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def pushCursor(self, patches):
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self.patchesCursor.append(patches)
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# }}}
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# {{{ pushDeltas(self, undoPatches, redoPatches): XXX
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def pushDeltas(self, undoPatches, redoPatches):
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if self.patchesUndoLevel > 0:
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del self.patchesUndo[0:self.patchesUndoLevel]
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self.patchesUndoLevel = 0
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deltaItem = [undoPatches, redoPatches]
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self.patchesUndo.insert(0, deltaItem)
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return deltaItem
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# }}}
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# {{{ resetCursor(self): XXX
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def resetCursor(self):
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self.patchesCursor = []
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# }}}
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# {{{ resetUndo(self): XXX
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def resetUndo(self):
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self.patchesUndo = [None]; self.patchesUndoLevel = 0;
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# }}}
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# {{{ updateCurrentDeltas(self, undoPatches, redoPatches): XXX
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def updateCurrentDeltas(self, undoPatches, redoPatches):
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self.patchesUndo[0][0].append(undoPatches)
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self.patchesUndo[0][1].append(redoPatches)
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# }}}
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#
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# __init__(self): initialisation method
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def __init__(self):
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self.resetCursor(); self.resetUndo();
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# vim:expandtab foldmethod=marker sw=4 ts=4 tw=120
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