--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.symbian.tools.wrttools.debug.core/src/org/symbian/tools/wrttools/debug/internal/model/ResourceManager.java	Wed Dec 23 17:13:18 2009 -0800
@@ -0,0 +1,138 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.symbian.tools.wrttools.debug.internal.model;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.chromium.debug.core.model.IResourceManager;
+import org.chromium.sdk.Script;
+import org.eclipse.core.resources.IFile;
+import org.eclipse.core.resources.IResource;
+import org.symbian.tools.wrttools.debug.internal.web.WorkspaceResourcesServlet;
+
+/**
+ * This object handles the mapping between {@link Script}s and their
+ * corresponding resources inside Eclipse.
+ * 
+ * Symbian branch is currently based on Revision 138
+ */
+public class ResourceManager implements IResourceManager {
+	/**
+	 * Script identifier for a breakpoint location.
+	 */
+	public static class ScriptIdentifier {
+		public static ScriptIdentifier forScript(Script script) {
+			String name = script.getName();
+			return new ScriptIdentifier(name, name != null ? -1 : script
+					.getId(), script.getStartLine(), script.getEndLine());
+		}
+
+		private final int endLine;
+		private final long id;
+		private final String name;
+		private final int startLine;
+
+		private ScriptIdentifier(String name, long id, int startLine,
+				int endLine) {
+			this.name = name;
+			this.id = id;
+			this.startLine = startLine;
+			this.endLine = endLine;
+		}
+
+		@Override
+		public boolean equals(Object obj) {
+			if (!(obj instanceof ScriptIdentifier)) {
+				return false;
+			}
+			ScriptIdentifier that = (ScriptIdentifier) obj;
+			if (this.startLine != that.startLine
+					|| this.endLine != that.endLine) {
+				return false;
+			}
+			if (name == null) {
+				// an unnamed script, only id is known
+				return that.name == null && this.id == that.id;
+			}
+			// a named script
+			return this.name.equals(that.name);
+		}
+
+		@Override
+		public int hashCode() {
+			final int prime = 31;
+			int result = 1;
+			result = prime * result + (int) (id ^ (id >>> 32));
+			result = prime * result + ((name == null) ? 0 : name.hashCode());
+			result = prime * result + 17 * startLine + 19 * endLine;
+			return result;
+		}
+	}
+
+	private Object fileBeingAdded;
+	private final Map<IFile, Script> resourceToScript = new HashMap<IFile, Script>();
+	private final Map<ScriptIdentifier, IFile> scriptIdToResource = new HashMap<ScriptIdentifier, IFile>();
+
+	public synchronized void addScript(Script script) {
+		IFile scriptFile = getResource(script);
+		if (scriptFile == null) {
+			scriptFile = getFile(script.getName());
+			if (scriptFile != null) {
+				fileBeingAdded = scriptFile;
+				try {
+					putScript(script, scriptFile);
+				} finally {
+					fileBeingAdded = null;
+				}
+			}
+		}
+	}
+
+	public synchronized void clear() {
+		resourceToScript.clear();
+		scriptIdToResource.clear();
+	}
+
+	private IFile getFile(String name) {
+		if (name == null) {
+			return null;
+		}
+		IFile file = WorkspaceResourcesServlet.getFileFromUrl(name);
+		if (file != null && !file.isAccessible()) {
+			file = null;
+		}
+		return file;
+	}
+
+	public synchronized IFile getResource(Script script) {
+		return scriptIdToResource.get(ScriptIdentifier.forScript(script));
+	}
+
+	public synchronized Script getScript(IFile resource) {
+		return resourceToScript.get(resource);
+	}
+
+	/**
+	 * @return whether the given file is being added to the target project
+	 */
+	public boolean isAddingFile(IFile file) {
+		return file.equals(fileBeingAdded);
+	}
+
+	public synchronized void putScript(Script script, IFile resource) {
+		ScriptIdentifier scriptId = ScriptIdentifier.forScript(script);
+		resourceToScript.put(resource, script);
+		scriptIdToResource.put(scriptId, resource);
+	}
+
+	public synchronized boolean scriptHasResource(Script script) {
+		return getResource(script) != null;
+	}
+
+	public String translateResourceToScript(IResource resource) {
+		return WorkspaceResourcesServlet.getHttpUrl(resource);
+	}
+}