plugins/org.symbian.tools.tmw.debug/src/org/symbian/tools/wrttools/debug/internal/model/JsWatchExpressionDelegate.java
--- a/plugins/org.symbian.tools.tmw.debug/src/org/symbian/tools/wrttools/debug/internal/model/JsWatchExpressionDelegate.java Thu Aug 19 17:48:04 2010 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,170 +0,0 @@
-// 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 org.chromium.debug.core.model.DebugElementImpl;
-import org.chromium.debug.core.model.EvaluateContext;
-import org.chromium.debug.core.model.Variable;
-import org.chromium.sdk.JsEvaluateContext;
-import org.chromium.sdk.JsVariable;
-import org.eclipse.core.runtime.Status;
-import org.eclipse.debug.core.DebugException;
-import org.eclipse.debug.core.model.IDebugElement;
-import org.eclipse.debug.core.model.IValue;
-import org.eclipse.debug.core.model.IWatchExpressionDelegate;
-import org.eclipse.debug.core.model.IWatchExpressionListener;
-import org.eclipse.debug.core.model.IWatchExpressionResult;
-import org.symbian.tools.wrttools.debug.internal.Activator;
-
-/**
- * Performs the Watch expression evaluation while debugging Chromium JavaScript.
- */
-public class JsWatchExpressionDelegate implements IWatchExpressionDelegate {
-
- private static final String[] EMPTY_STRINGS = new String[0];
-
- private static final class GoodWatchExpressionResult implements IWatchExpressionResult {
-
- private final Variable variable;
-
- private final String expression;
-
- private IValue value;
-
- private DebugException exception;
-
- private GoodWatchExpressionResult(Variable variable, String expression) {
- this.variable = variable;
- this.expression = expression;
- }
-
- public String[] getErrorMessages() {
- return exception == null
- ? EMPTY_STRINGS
- : new String[] { exception.getStatus().getMessage() };
- }
-
- public DebugException getException() {
- getValue();
- return exception;
- }
-
- public String getExpressionText() {
- return expression;
- }
-
- public synchronized IValue getValue() {
- if (value == null && exception == null) {
- try {
- value = variable.getValue();
- } catch (DebugException e) {
- this.exception = e;
- }
- }
- return value;
- }
-
- public boolean hasErrors() {
- getValue();
- return exception != null;
- }
- }
-
- private static final class BadWatchExpressionResult implements IWatchExpressionResult {
-
- private final DebugException exception;
-
- private final String expressionText;
-
- private BadWatchExpressionResult(DebugException exception, String expressionText) {
- this.exception = exception;
- this.expressionText = expressionText;
- }
-
- public String[] getErrorMessages() {
- return new String[] { exception.getStatus().getMessage() };
- }
-
- public DebugException getException() {
- return exception;
- }
-
- public String getExpressionText() {
- return expressionText;
- }
-
- public IValue getValue() {
- return null;
- }
-
- public boolean hasErrors() {
- return true;
- }
- }
-
- public void evaluateExpression(final String expression, final IDebugElement context,
- final IWatchExpressionListener listener) {
- final DebugElementImpl contextImpl = (DebugElementImpl) context;
- if (!contextImpl.getDebugTarget().isSuspended()) {
- // can only evaluate while suspended. Notify empty result.
- listener.watchEvaluationFinished(new IWatchExpressionResult() {
-
- public String[] getErrorMessages() {
- return EMPTY_STRINGS;
- }
-
- public DebugException getException() {
- return null;
- }
-
- public String getExpressionText() {
- return expression;
- }
-
- public IValue getValue() {
- return null;
- }
-
- public boolean hasErrors() {
- return false;
- }
- });
- return;
- }
-
- final EvaluateContext evaluateContext =
- (EvaluateContext) contextImpl.getAdapter(EvaluateContext.class);
- if (evaluateContext == null) {
- listener.watchEvaluationFinished(new BadWatchExpressionResult(
- new DebugException(
- new Status(Status.ERROR, Activator.PLUGIN_ID, "Bad debug context")), //$NON-NLS-1$
- expression));
- return;
- }
-
- evaluateContext.getJsEvaluateContext().evaluateAsync(
- expression,
- new JsEvaluateContext.EvaluateCallback() {
- public void success(JsVariable variable) {
- final Variable var = new Variable(contextImpl.getDebugTarget(), variable, false);
- listener.watchEvaluationFinished(new GoodWatchExpressionResult(var, expression));
- }
-
- public void failure(String message) {
- listener.watchEvaluationFinished(new BadWatchExpressionResult(new DebugException(
- createErrorStatus(message == null
- ? "Error evaluating expression"
- : message, null)), expression));
- return;
- }
- },
- null);
- }
-
- private static Status createErrorStatus(String message, Exception e) {
- return new Status(Status.ERROR, Activator.PLUGIN_ID, message, e);
- }
-
-}