| /******************************************************************************* |
| * Copyright (c) 2006 Sybase, Inc. 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: |
| * Sybase, Inc. - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.pagedesigner.actions.range; |
| |
| import org.eclipse.gef.commands.Command; |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.jst.pagedesigner.commands.range.ApplyStyleCommand; |
| import org.eclipse.jst.pagedesigner.dom.DOMPositionHelper; |
| import org.eclipse.jst.pagedesigner.dom.DOMRange; |
| import org.eclipse.jst.pagedesigner.dom.DOMRangeHelper; |
| import org.eclipse.jst.pagedesigner.dom.EditModelQuery; |
| import org.eclipse.jst.pagedesigner.dom.IDOMPosition; |
| import org.eclipse.jst.pagedesigner.viewer.DesignPosition; |
| import org.eclipse.jst.pagedesigner.viewer.DesignRange; |
| import org.eclipse.jst.pagedesigner.viewer.IHTMLGraphicalViewer; |
| import org.w3c.dom.Node; |
| |
| /** |
| * @author mengbo |
| */ |
| public class ChangeStyleAction extends DesignerToolBarAction { |
| private final String _expectedTag; |
| |
| /** |
| * @param text |
| * @param name |
| * @param image |
| * @param style |
| */ |
| public ChangeStyleAction(String text, String name, ImageDescriptor image, |
| int style) { |
| super(text, style); |
| _expectedTag = name; |
| this.setImageDescriptor(image); |
| } |
| |
| /** |
| * @param text |
| * @param name |
| * @param enabled |
| * @param disabled |
| * @param style |
| */ |
| public ChangeStyleAction(String text, String name, ImageDescriptor enabled, |
| ImageDescriptor disabled, int style) { |
| super(text, style); |
| _expectedTag = name; |
| setImageDescriptor(enabled); |
| setDisabledImageDescriptor(disabled); |
| } |
| |
| |
| protected boolean isApplied(DOMRange range) { |
| if (range == null) { |
| return false; |
| } |
| |
| boolean ordered = range.isOrdered(); |
| IDOMPosition start = ordered ? range.getStartPosition() : range |
| .getEndPosition(); |
| IDOMPosition end = ordered ? range.getEndPosition() : range |
| .getStartPosition(); |
| Node startnode = start.getContainerNode(); |
| Node endnode = end.getContainerNode(); |
| if (!EditModelQuery.hasAncestor(startnode, _expectedTag, true)) { |
| return false; |
| } |
| for (Node node = startnode; node != endnode; node = EditModelQuery |
| .getInstance().getNextLeafNeighbor(node)) { |
| if (!EditModelQuery.hasAncestor(node, _expectedTag, true)) { |
| return false; |
| } |
| } |
| if (!EditModelQuery.hasAncestor(endnode, _expectedTag, true)) { |
| return false; |
| } |
| return true; |
| } |
| |
| /** |
| * @return the expected tag |
| */ |
| protected String getExpectedTag() { |
| return _expectedTag; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jst.pagedesigner.commands.range.DesignerToolBarAction#getCommand() |
| */ |
| protected Command getCommand() { |
| DesignRange range = getViewer().getRangeSelection(); |
| DOMRange dRange = DOMRangeHelper.toDOMRange(range); |
| Command command; |
| if (isApplied(dRange)) { |
| // command = new UnapplyStyleCommand(getViewer(), _expectedTag, |
| // null, null); |
| // since the un-applystyle is not implemented yet,we do nothing |
| // here. |
| command = null; |
| this.setChecked(true); |
| } else { |
| command = new ApplyStyleCommand(getViewer(), _expectedTag, null, |
| null); |
| } |
| return command; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.texteditor.IUpdate#update() |
| */ |
| public void update() { |
| if (canRun(getViewer())) { |
| setEnabled(true); |
| } else { |
| setEnabled(false); |
| } |
| updateStatus(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jst.pagedesigner.actions.range.DesignerToolBarAction#updateStatus() |
| */ |
| public void updateStatus() { |
| IHTMLGraphicalViewer viewer = getViewer(); |
| if (viewer != null && viewer.isInRangeMode() |
| && viewer.getModel().getDocument().hasChildNodes()) { |
| DesignRange range = getViewer().getRangeSelection(); |
| if (range != null && range.isValid()) { |
| DOMRange domRange = null; |
| domRange = new DOMRange(DOMPositionHelper.toDOMPosition(range |
| .getStartPosition()), DOMPositionHelper |
| .toDOMPosition(range.getEndPosition())); |
| if (isApplied(domRange)) { |
| this.setChecked(true); |
| } else { |
| this.setChecked(false); |
| } |
| return; |
| } |
| } |
| this.setChecked(false); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jst.pagedesigner.actions.range.DesignerToolBarAction#canRun(org.eclipse.jst.pagedesigner.viewer.IHTMLGraphicalViewer) |
| */ |
| protected boolean canRun(IHTMLGraphicalViewer viewer) { |
| if (viewer != null && viewer.isInRangeMode() |
| && viewer.getModel().getDocument().hasChildNodes()) { |
| DesignRange range = viewer.getRangeSelection(); |
| if (range != null && range.isValid()) { |
| DesignPosition startPos = range.getStartPosition(); |
| DesignPosition endPos = range.getEndPosition(); |
| if (startPos != endPos) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| } |