| /******************************************************************************* |
| * 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.validation.caret; |
| |
| import org.eclipse.gef.EditPart; |
| import org.eclipse.jst.pagedesigner.dom.DOMRefPosition; |
| import org.eclipse.jst.pagedesigner.dom.IDOMPosition; |
| import org.eclipse.jst.pagedesigner.parts.NodeEditPart; |
| |
| /** |
| * @author mengbo |
| */ |
| public class DefaultPositionRule implements IPositionRule { |
| |
| protected IPositionMediator _mediator; |
| |
| private ActionData _actionData; |
| |
| /** |
| * |
| */ |
| public DefaultPositionRule(IPositionMediator mediator, ActionData actionData) { |
| super(); |
| _mediator = mediator; |
| if (actionData != null) { |
| _actionData = actionData; |
| } else { |
| _actionData = new ActionData(ActionData.UNKNOWN, new Object()); |
| } |
| } |
| |
| protected final ActionData getActionData() |
| { |
| return _actionData; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jst.pagedesigner.caret.IPositionRule#hasEditableArea(org.w3c.dom.Node) |
| */ |
| public boolean hasEditableArea(Target target) { |
| return true; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jst.pagedesigner.caret.IPositionRule#isEditable(org.eclipse.gef.EditPart) |
| */ |
| public boolean isEditable(Target target) { |
| return true; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jst.pagedesigner.caret.IPositionRule#isTransparent(org.eclipse.gef.EditPart, |
| * org.eclipse.draw2d.geometry.Point) |
| */ |
| public boolean canReference(Target target, boolean atRight) { |
| return true; |
| } |
| |
| /** |
| * If container is inEditable and can be referenced, the position is |
| * invalid, otherwise as default the position is valid. (non-Javadoc) |
| * |
| * @see org.eclipse.jst.pagedesigner.caret.IPositionRule#isValidPosition(org.eclipse.jst.pagedesigner.dom.IDOMPosition) |
| */ |
| public boolean isValidPosition(IDOMPosition position) { |
| boolean result = isEditable(new Target(position.getContainerNode())); |
| if (result) { |
| if (position.getOffset() == 0 |
| || position.getOffset() == position.getContainerNode() |
| .getChildNodes().getLength()) { |
| result = true; |
| } else { |
| boolean dir; |
| Target target = null; |
| if (position instanceof DOMRefPosition) { |
| target = new Target(((DOMRefPosition) position) |
| .getReferenceNode()); |
| dir = ((DOMRefPosition) position).isForward(); |
| result = canReference(target, dir); |
| } |
| } |
| } |
| return result; |
| } |
| |
| /** |
| * @param host |
| * @param tagName |
| * @return |
| */ |
| public static boolean isWidget(EditPart host) { |
| if (host instanceof NodeEditPart) { |
| return ((NodeEditPart) host).isWidget(); |
| } |
| return false; |
| } |
| } |