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Viewing changes to TuxGuitar/src/org/herac/tuxguitar/gui/undo/undoables/track/UndoableTrackGeneric.java

  • Committer: Bazaar Package Importer
  • Author(s): Philippe Coval
  • Date: 2008-06-19 00:30:30 UTC
  • mto: (5.1.2 sid)
  • mto: This revision was merged to the branch mainline in revision 3.
  • Revision ID: james.westby@ubuntu.com-20080619003030-h719szrhsngou7c6
Tags: upstream-1.0
Import upstream version 1.0

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TuxGuitar/src/org/herac/tuxguitar/gui/undo/undoables/track/UndoableTrackGeneric.java
 
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package org.herac.tuxguitar.gui.undo.undoables.track;
 
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import org.herac.tuxguitar.gui.TuxGuitar;
 
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import org.herac.tuxguitar.gui.undo.CannotRedoException;
 
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import org.herac.tuxguitar.gui.undo.CannotUndoException;
 
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import org.herac.tuxguitar.gui.undo.UndoableEdit;
 
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import org.herac.tuxguitar.gui.undo.undoables.UndoableCaretHelper;
 
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import org.herac.tuxguitar.song.models.TGTrack;
 
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public class UndoableTrackGeneric implements UndoableEdit{
 
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        private int doAction;
 
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        private UndoableCaretHelper undoCaret;
 
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        private UndoableCaretHelper redoCaret;
 
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        private UndoTrack undoTrack;
 
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        private RedoTrack redoTrack;
 
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        private UndoableTrackGeneric(){
 
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                super();
 
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        }
 
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        public void redo() throws CannotRedoException {
 
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                if(!canRedo()){
 
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                        throw new CannotRedoException();
 
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                }
 
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                this.redoTrack.redo();
 
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                this.redoCaret.update();
 
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                this.doAction = UNDO_ACTION;
 
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        }
 
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        public void undo() throws CannotUndoException {
 
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                if(!canUndo()){
 
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                        throw new CannotUndoException();
 
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                }
 
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                this.undoTrack.undo();
 
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                this.undoCaret.update();
 
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                this.doAction = REDO_ACTION;
 
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        }
 
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        public boolean canRedo() {
 
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                return (this.doAction == REDO_ACTION);
 
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        }
 
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        public boolean canUndo() {
 
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                return (this.doAction == UNDO_ACTION);
 
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        }
 
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        public static UndoableTrackGeneric startUndo(TGTrack track){
 
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                UndoableTrackGeneric undoable = new UndoableTrackGeneric();
 
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                undoable.doAction = UNDO_ACTION;
 
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                undoable.undoCaret = new UndoableCaretHelper();
 
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                undoable.undoTrack = undoable.new UndoTrack(track);
 
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                return undoable;
 
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        }
 
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        public UndoableTrackGeneric endUndo(TGTrack track){
 
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                this.redoCaret = new UndoableCaretHelper();
 
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                this.redoTrack = new RedoTrack(track);
 
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                return this;
 
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        }
 
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        private class UndoTrack{
 
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                private TGTrack track;
 
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                public UndoTrack(TGTrack track){
 
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                        if(track != null){
 
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                                this.track = track.clone(TuxGuitar.instance().getSongManager().getFactory(),TuxGuitar.instance().getSongManager().getSong());
 
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                        }
 
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                }
 
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                public void undo(){
 
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                        if(this.track != null){
 
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                                TuxGuitar.instance().getSongManager().replaceTrack(this.track);
 
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                                TuxGuitar.instance().fireUpdate();
 
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                                TuxGuitar.instance().getMixer().update();
 
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                        }
 
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                }
 
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        }
 
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        private class RedoTrack{
 
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                private TGTrack track;
 
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                public RedoTrack(TGTrack track){
 
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                        if(track != null){
 
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                                this.track = track.clone(TuxGuitar.instance().getSongManager().getFactory(),TuxGuitar.instance().getSongManager().getSong());
 
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                        }
 
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                }
 
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                public void redo(){
 
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                        if(this.track != null){
 
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                                TuxGuitar.instance().getSongManager().replaceTrack(this.track);
 
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                                TuxGuitar.instance().fireUpdate();
 
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                                TuxGuitar.instance().getMixer().update();
 
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                        }
 
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                }
 
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        }
 
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}