/*
 * Copyright (c) 2012, the Dart project authors.
 * 
 * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package com.google.dart.tools.debug.ui.launch;

import com.google.dart.tools.core.DartCore;
import com.google.dart.tools.debug.ui.internal.util.LaunchUtils;

import org.eclipse.core.expressions.PropertyTester;
import org.eclipse.core.resources.IFile;
import org.eclipse.jface.viewers.IStructuredSelection;

/**
 * A {@link PropertyTester} for checking whether the resource can be launched in a non Dartium
 * browser. It is used to contribute the Run in Browser and Run as JavaScript context menus in the
 * Files view. Defines the property "canLaunchBrowser" and "canPubBuild".
 */
public class RunInBrowserPropertyTester extends PropertyTester {

  private static final String CAN_LAUNCH_BROWSER = "canLaunchBrowser";
  private static final String CAN_RUN_AS_JS = "canRunAsJs";

  public RunInBrowserPropertyTester() {

  }

  @Override
  public boolean test(Object receiver, String property, Object[] args, Object expectedValue) {

    if (CAN_LAUNCH_BROWSER.equalsIgnoreCase(property)) {
      if (receiver instanceof IStructuredSelection) {
        Object o = ((IStructuredSelection) receiver).getFirstElement();
        if (o instanceof IFile) {
          IFile file = (IFile) o;
          if (DartCore.isHtmlLikeFileName(file.getName())
              && DartCore.isInBuildDirectory(file.getParent())) {
            return true;
          }
        }
      }
    }

    if (CAN_RUN_AS_JS.equalsIgnoreCase(property)) {
      if (receiver instanceof IStructuredSelection) {
        Object o = ((IStructuredSelection) receiver).getFirstElement();
        if (o instanceof IFile) {
          IFile file = (IFile) o;
          return LaunchUtils.isDartiumOrJsLaunchResource(file)
              && !DartCore.isInBuildDirectory(file.getParent());
        }
      }
    }

    return false;
  }
}