| /******************************************************************************* |
| * Copyright (c) 2001, 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.wst.ws.internal.explorer.platform.actions; |
| |
| import javax.servlet.http.HttpServletRequest; |
| import org.eclipse.wst.ws.internal.explorer.platform.constants.ActionInputs; |
| import org.eclipse.wst.ws.internal.explorer.platform.perspective.Controller; |
| |
| // Abstract class representing the action of clicking a link. These actions |
| // may change the history list. |
| public abstract class LinkAction extends Action |
| { |
| private boolean isAddedToHistory_; |
| private boolean isStaleBreadCrumb_; |
| |
| public LinkAction(Controller controller) |
| { |
| super(controller); |
| isAddedToHistory_ = false; |
| isStaleBreadCrumb_ = false; |
| } |
| |
| // Determine if the action was successfully added to this history list. |
| // This should be called after the run() method. |
| public final boolean isAddedToHistory() |
| { |
| return isAddedToHistory_; |
| } |
| |
| protected abstract boolean processLinkParameters(HttpServletRequest request); |
| |
| public final boolean populatePropertyTable(HttpServletRequest request) |
| { |
| String isHistoryString = request.getParameter(ActionInputs.ISHISTORY); |
| if (isHistoryString != null) |
| propertyTable_.put(ActionInputs.ISHISTORY,isHistoryString); |
| return processLinkParameters(request); |
| } |
| |
| // Add the action's URL to the controller's history list. |
| protected final void addToHistory(int perspectiveId,String url) |
| { |
| if (!isHistoryAction()) |
| isAddedToHistory_ = controller_.addToHistory(perspectiveId,url); |
| } |
| |
| public final boolean isHistoryAction() |
| { |
| return (propertyTable_.get(ActionInputs.ISHISTORY) != null); |
| } |
| |
| public final void setStaleBreadCrumb() |
| { |
| if (isHistoryAction()) |
| { |
| isStaleBreadCrumb_ = true; |
| controller_.processStaleBreadCrumb(); |
| } |
| } |
| |
| public final boolean isStaleBreadCrumb() |
| { |
| return isStaleBreadCrumb_; |
| } |
| |
| // Call this when a stale breadcrumb is encountered while traversing history chain. |
| public final String getNextHistoryActionLink() |
| { |
| return RetrieveHistoryAction.getActionLink(controller_.getHistoryDirection()); |
| } |
| } |