1 files changed, 138 insertions, 0 deletions
diff --git a/bundles/org.eclipse.jst.jsp.core/src/org/eclipse/jst/jsp/core/contentmodel/TaglibIndex.java b/bundles/org.eclipse.jst.jsp.core/src/org/eclipse/jst/jsp/core/contentmodel/TaglibIndex.java
new file mode 100644
index 0000000000..8ef1effcb1
--- /dev/null
+++ b/bundles/org.eclipse.jst.jsp.core/src/org/eclipse/jst/jsp/core/contentmodel/TaglibIndex.java
@@ -0,0 +1,138 @@
+/*******************************************************************************
+ * Copyright (c) 2001, 2004 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.jst.jsp.core.contentmodel;
+
+import java.io.File;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.eclipse.core.filebuffers.FileBuffers;
+import org.eclipse.core.resources.IFile;
+import org.eclipse.core.resources.IProject;
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.resources.IResourceChangeEvent;
+import org.eclipse.core.resources.IResourceChangeListener;
+import org.eclipse.core.resources.IResourceDelta;
+import org.eclipse.core.resources.ResourcesPlugin;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.Path;
+
+/**
+ * @author nsd
+ * 
+ * A non-extendable index manager for taglibs similar to the J2EE
+ * ITaglibRegistry but lacking any ties to project natures.
+ */
+public class TaglibIndex {
+
+	class ResourceChangeListener implements IResourceChangeListener {
+		public void resourceChanged(IResourceChangeEvent event) {
+			// pair deltas with projects
+			IResourceDelta[] deltas = new IResourceDelta[]{event.getDelta()};
+			IProject[] projects = null;
+
+			if (deltas != null && deltas.length > 0) {
+				IResource resource = deltas[0].getResource();
+
+				if (resource.getType() == IResource.ROOT) {
+					deltas = deltas[0].getAffectedChildren();
+					projects = new IProject[deltas.length];
+					for (int i = 0; i < deltas.length; i++) {
+						if (deltas[i].getResource().getType() == IResource.PROJECT) {
+							projects[i] = (IProject) deltas[i].getResource();
+						}
+					}
+				}
+				else {
+					projects = new IProject[1];
+					if (resource.getType() != IResource.PROJECT) {
+						projects[0] = resource.getProject();
+					}
+					else {
+						projects[0] = (IProject) resource;
+					}
+				}
+				for (int i = 0; i < projects.length; i++) {
+					ProjectDescription description = createDescription(projects[i]);
+					try {
+						deltas[i].accept(description.getVisitor());
+					}
+					catch (CoreException e) {
+						// TODO Auto-generated catch block
+						e.printStackTrace();
+					}
+				}
+			}
+		}
+
+	}
+
+	static final boolean _debugChangeListener = true;
+
+	static TaglibIndex _instance;
+
+	static {
+		_instance = new TaglibIndex();
+	}
+
+	public static void addTaglibIndexListener(ITaglibIndexListener listener) {
+	}
+
+	public static void removeTaglibIndexListener(ITaglibIndexListener listener) {
+	}
+
+	public static ITaglibRecord resolve(String baseLocation, String reference, boolean crossProjects) {
+		return _instance.internalResolve(baseLocation, reference, crossProjects);
+	}
+
+	Map fProjectDescriptions;
+	private ResourceChangeListener fResourceChangeListener;
+
+	private TaglibIndex() {
+		super();
+		fResourceChangeListener = new ResourceChangeListener();
+		ResourcesPlugin.getWorkspace().addResourceChangeListener(fResourceChangeListener);
+		fProjectDescriptions = new HashMap();
+	}
+
+	/**
+	 * @param project
+	 * @return
+	 */
+	ProjectDescription createDescription(IProject project) {
+		ProjectDescription description = (ProjectDescription) fProjectDescriptions.get(project);
+		if (description == null) {
+			description = new ProjectDescription(project);
+			description.index();
+			fProjectDescriptions.put(project, description);
+		}
+		return description;
+	}
+
+	private ITaglibRecord internalResolve(String baseLocation, String reference, boolean crossProjects) {
+		IProject project = null;
+		ITaglibRecord resolved = null;
+		IFile baseResource = FileBuffers.getWorkspaceFileAtLocation(new Path(baseLocation));
+		if (baseResource != null) {
+			project = baseResource.getProject();
+			ProjectDescription description = createDescription(project);
+			resolved = description.resolve(baseLocation, reference);
+		}
+		else {
+			// TODO: support outside of the workspace?
+			File baseFile = FileBuffers.getSystemFileAtLocation(new Path(baseLocation));
+			if (baseFile != null) {
+			}
+		}
+		return resolved;
+	}
+}