| /******************************************************************************* |
| * Copyright (c) 2005 Oracle Corporation. |
| * 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: |
| * Ian Trimble - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.jsf.core.jsfappconfig; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.core.resources.IResourceChangeEvent; |
| import org.eclipse.core.resources.IResourceChangeListener; |
| import org.eclipse.core.resources.IResourceDelta; |
| import org.eclipse.core.resources.IResourceDeltaVisitor; |
| import org.eclipse.core.resources.IWorkspace; |
| import org.eclipse.core.resources.ResourcesPlugin; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.jst.jsf.core.internal.JSFCorePlugin; |
| import org.eclipse.wst.common.componentcore.resources.IVirtualFolder; |
| import org.eclipse.wst.common.componentcore.resources.IVirtualResource; |
| |
| /** |
| * DefaultJSFAppConfigLocater attempts to locate the default application |
| * configuration file, located at "/WEB-INF/faces-config.xml". |
| * |
| * <p><b>Provisional API - subject to change</b></p> |
| * |
| * @author Ian Trimble - Oracle |
| */ |
| public class DefaultJSFAppConfigLocater extends WebContentRelativeJSFAppConfigLocater |
| implements IResourceChangeListener { |
| |
| /** |
| * Web content folder-relative name of the default application |
| * configuration resource file. |
| */ |
| public static final String DEF_APPCONFIGRESOURCE_FILENAME = "WEB-INF/faces-config.xml"; //$NON-NLS-1$ |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.jst.jsf.core.jsfappconfig.AbstractJSFAppConfigLocater#startLocating() |
| */ |
| public void startLocating() { |
| locateProviders(); |
| IWorkspace workspace = ResourcesPlugin.getWorkspace(); |
| workspace.addResourceChangeListener(this, IResourceChangeEvent.POST_BUILD); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.jst.jsf.core.jsfappconfig.AbstractJSFAppConfigLocater#stopLocating() |
| */ |
| public void stopLocating() { |
| IWorkspace workspace = ResourcesPlugin.getWorkspace(); |
| workspace.removeResourceChangeListener(this); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.jst.jsf.core.jsfappconfig.WebContentRelativeJSFAppConfigLocater#getFilenames() |
| */ |
| protected List getFilenames() { |
| List filenames = new ArrayList(); |
| filenames.add(DEF_APPCONFIGRESOURCE_FILENAME); |
| return filenames; |
| } |
| |
| /** |
| * Responds to resource change events. |
| * |
| * @param event IResourceChangeEvent instance. |
| */ |
| public void resourceChanged(IResourceChangeEvent event) { |
| IResourceDelta delta = event.getDelta(); |
| try { |
| delta.accept(new ResourceDeltaVisitor()); |
| } catch (CoreException cex) { |
| JSFCorePlugin.log( |
| IStatus.WARNING, |
| cex.getLocalizedMessage(), |
| cex); |
| } |
| } |
| |
| /** |
| * ResourceDeltaVisitor is used to visit an IResourceDelta instance to |
| * discover if the default application configuration resource file has |
| * been added or removed. |
| * |
| * @author Ian Trimble - Oracle |
| */ |
| class ResourceDeltaVisitor implements IResourceDeltaVisitor { |
| |
| /** |
| * Cached IPath instance for default configuration resource file. |
| */ |
| protected IPath defConfigPath = null; |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.core.resources.IResourceDeltaVisitor#visit(org.eclipse.core.resources.IResourceDelta) |
| */ |
| public boolean visit(IResourceDelta delta) { |
| boolean visitChildren = false; |
| initDefConfigPath(); |
| if (defConfigPath != null) { |
| IPath deltaPath = delta.getFullPath(); |
| if (deltaPath != null) { |
| if (defConfigPath.equals(deltaPath)) { |
| locateProviders(); |
| } else if (deltaPath.isPrefixOf(defConfigPath)) { |
| visitChildren = true; |
| } |
| } |
| } else { |
| locateProviders(); |
| } |
| return visitChildren; |
| } |
| |
| /** |
| * Determines IPath instance for default configuration resource file |
| * and caches in class member. |
| */ |
| protected void initDefConfigPath() { |
| if (defConfigPath == null) { |
| IProject project = manager.getProject(); |
| if (project != null) { |
| IVirtualFolder webContentFolder = JSFAppConfigUtils.getWebContentFolder(project); |
| if (webContentFolder != null) { |
| IVirtualResource defConfigFile = webContentFolder.findMember(DEF_APPCONFIGRESOURCE_FILENAME); |
| if (defConfigFile != null) { |
| defConfigPath = defConfigFile.getWorkspaceRelativePath(); |
| } |
| } |
| } |
| } |
| } |
| |
| } |
| |
| } |