diff options
Diffstat (limited to 'bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/StructuredTextViewerUndoManager.java')
| -rw-r--r-- | bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/StructuredTextViewerUndoManager.java | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/StructuredTextViewerUndoManager.java b/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/StructuredTextViewerUndoManager.java deleted file mode 100644 index 33797c519c..0000000000 --- a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/StructuredTextViewerUndoManager.java +++ /dev/null @@ -1,200 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2001, 2004 IBM Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Eclipse Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: - * IBM Corporation - initial API and implementation - * Jens Lukowski/Innoopract - initial renaming/restructuring - * - *******************************************************************************/ -package org.eclipse.wst.sse.ui; - -import org.eclipse.jface.text.IDocument; -import org.eclipse.jface.text.ITextSelection; -import org.eclipse.jface.text.ITextViewer; -import org.eclipse.jface.text.IUndoManager; -import org.eclipse.jface.viewers.ISelectionChangedListener; -import org.eclipse.jface.viewers.SelectionChangedEvent; -import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument; -import org.eclipse.wst.sse.core.internal.undo.IStructuredTextUndoManager; -import org.eclipse.wst.sse.ui.internal.StructuredTextViewer; - - -/** - * Undo manager exclusively for StructuredTextViewers ONLY. This undo manager - * is aware that structured documents have their own undo manager. This - * handles communication between IUndoManager and IStructuredTextUndoManager. - */ -class StructuredTextViewerUndoManager implements IUndoManager { - class UndoNotifier implements ISelectionChangedListener { - public void selectionChanged(SelectionChangedEvent event) { - if ((fUndoManager != null) && (event != null)) { - if (event.getSelection() instanceof ITextSelection) { - fUndoManager.forceEndOfPendingCommand(this, ((ITextSelection) event.getSelection()).getOffset(), ((ITextSelection) event.getSelection()).getLength()); - } - } - } - - } - - private StructuredTextViewer fTextViewer = null; - private IStructuredTextUndoManager fUndoManager = null; - private ISelectionChangedListener fUndoNotifier = new UndoNotifier(); - - /* - * (non-Javadoc) - * - * @see org.eclipse.jface.text.IUndoManager#beginCompoundChange() - */ - public void beginCompoundChange() { - // forward the request to the model-based undo manager - if (fUndoManager != null) - fUndoManager.beginRecording(fTextViewer); - } - - /** - * Associates a viewer to this undo manager and also attempts to get the - * correct document-specific undo manager. - * - * @param viewer - - * Assumes viewer instanceof StructuredTextViewer - */ - public void connect(ITextViewer viewer) { - // future_TODO could probably optimize this to check if already - // connected to same viewer/undo manager, dont do anything - - // disconnect from any old manager/viewer - disconnect(); - - // connect to new viewer/undo manager - fTextViewer = (StructuredTextViewer) viewer; - IDocument doc = fTextViewer.getDocument(); - if (doc instanceof IStructuredDocument) { - IStructuredDocument structuredDocument = (IStructuredDocument) doc; - setDocument(structuredDocument); - } - } - - /* - * (non-Javadoc) - * - * @see org.eclipse.jface.text.IUndoManager#disconnect() - */ - public void disconnect() { - // disconnect the viewer from the undo manager - if (fUndoManager != null) { - fTextViewer.removeSelectionChangedListener(fUndoNotifier); - fUndoManager.disconnect(fTextViewer); - } - - // null out the viewer and undo manager - fTextViewer = null; - fUndoManager = null; - } - - /* - * (non-Javadoc) - * - * @see org.eclipse.jface.text.IUndoManager#endCompoundChange() - */ - public void endCompoundChange() { - // forward the request to the model-based undo manager - if (fUndoManager != null) - fUndoManager.endRecording(fTextViewer); - } - - /* - * (non-Javadoc) - * - * @see org.eclipse.jface.text.IUndoManager#redo() - */ - public void redo() { - // forward the request to the model-based undo manager - if (fUndoManager != null) - fUndoManager.redo(fTextViewer); - } - - /* - * (non-Javadoc) - * - * @see org.eclipse.jface.text.IUndoManager#redoable() - */ - public boolean redoable() { - boolean canRedo = false; - - // forward the request to the model-based undo manager - if (fUndoManager != null) - canRedo = fUndoManager.redoable(); - - return canRedo; - } - - /* - * (non-Javadoc) - * - * @see org.eclipse.jface.text.IUndoManager#reset() - */ - public void reset() { - // cannot really reset model-based undo manager because other clients - // will be affected - } - - /** - * Disconnect from the old undo manager and connect to the undo manager - * associated with the new document. - * - * @param document - - * assumes document is not null - */ - public void setDocument(IStructuredDocument document) { - if (fUndoManager != null) { - fTextViewer.removeSelectionChangedListener(fUndoNotifier); - fUndoManager.disconnect(fTextViewer); - } - - fUndoManager = document.getUndoManager(); - if (fUndoManager != null) { - fUndoManager.connect(fTextViewer); - fTextViewer.addSelectionChangedListener(fUndoNotifier); - } - } - - /* - * (non-Javadoc) - * - * @see org.eclipse.jface.text.IUndoManager#setMaximalUndoLevel(int) - */ - public void setMaximalUndoLevel(int undoLevel) { - // cannot really set maximal undo level on model-based undo manager - // because other clients will be affected - } - - /* - * (non-Javadoc) - * - * @see org.eclipse.jface.text.IUndoManager#undo() - */ - public void undo() { - // forward the request to the model-based undo manager - if (fUndoManager != null) - fUndoManager.undo(fTextViewer); - } - - /* - * (non-Javadoc) - * - * @see org.eclipse.jface.text.IUndoManager#undoable() - */ - public boolean undoable() { - boolean canUndo = false; - - // forward the request to the model-based undo manager - if (fUndoManager != null) - canUndo = fUndoManager.undoable(); - - return canUndo; - } -} |