| /******************************************************************************* |
| * Copyright (c) 2000, 2005 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 |
| *******************************************************************************/ |
| package org.eclipse.ui.internal.texteditor.quickdiff; |
| |
| |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.source.ILineDiffInfo; |
| import org.eclipse.jface.text.source.ILineDiffer; |
| |
| import org.eclipse.ui.internal.texteditor.NLSUtility; |
| |
| import org.eclipse.ui.texteditor.ITextEditor; |
| |
| /** |
| * Action that will restore a block of deleted lines at the current caret position in an editor. |
| * |
| * @since 3.0 |
| */ |
| public class RestoreAction extends QuickDiffRestoreAction { |
| /** Resource key prefix. */ |
| private static final String PREFIX= "RestoreAction."; //$NON-NLS-1$ |
| |
| /** The line to be restored. Set in <code>update()</code>. */ |
| private int fLine; |
| |
| /** |
| * Creates a new instance. |
| * |
| * @param editor the editor this action belongs to |
| * @param isRulerAction <code>true</code> if this is a ruler action |
| */ |
| public RestoreAction(ITextEditor editor, boolean isRulerAction) { |
| super(PREFIX, editor, isRulerAction); |
| } |
| |
| /* |
| * @see org.eclipse.ui.internal.texteditor.quickdiff.QuickDiffRestoreAction#computeEnablement() |
| */ |
| public boolean computeEnablement() { |
| if (!super.computeEnablement()) |
| return false; |
| |
| fLine= getLastLine(); |
| if (fLine == -1) |
| return false; |
| ILineDiffer differ= getDiffer(); |
| if (differ == null) |
| return false; |
| ILineDiffInfo info= differ.getLineInfo(fLine); |
| if (info == null || (info.getRemovedLinesAbove() <= 0 && info.getRemovedLinesBelow() <= 0)) |
| return false; |
| |
| if (info.getRemovedLinesBelow() == 0) { |
| fLine--; |
| } else if (info.getRemovedLinesAbove() != 0) { |
| // take the line below |
| } |
| info= differ.getLineInfo(fLine); |
| if (info == null) |
| return false; |
| if (info.getRemovedLinesBelow() == 1) |
| setText(QuickDiffMessages.RestoreAction_label); |
| else |
| setText(NLSUtility.format(QuickDiffMessages.RestoreAction_multiple_label, String.valueOf(info.getRemovedLinesBelow()))); |
| return true; |
| } |
| |
| /* |
| * @see org.eclipse.ui.internal.editors.quickdiff.QuickDiffRestoreAction#runCompoundChange() |
| */ |
| public void runCompoundChange() { |
| if (!isEnabled()) |
| return; |
| ILineDiffer differ= getDiffer(); |
| if (differ != null) { |
| try { |
| differ.restoreAfterLine(fLine); |
| } catch (BadLocationException e) { |
| setStatus(e.getMessage()); |
| } |
| } |
| } |
| } |