/*******************************************************************************
* Copyright 2011 Google Inc. All Rights Reserved.
*
* 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
*
* 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.gdt.eclipse.designer.gxt.actions;
import com.google.gdt.eclipse.designer.util.ModuleDescription;
import com.google.gdt.eclipse.designer.util.Utils;
import org.eclipse.wb.internal.core.utils.execution.ExecutionUtils;
import org.eclipse.wb.internal.core.utils.execution.RunnableObjectEx;
import org.eclipse.core.expressions.PropertyTester;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IJavaProject;
import java.text.MessageFormat;
/**
* {@link PropertyTester} for GXT specific properties.
*
* @author scheglov_ke
* @coverage ExtGWT.actions
*/
public class GxtPropertyTester extends PropertyTester {
public static final String PROPERTY_IS_CONFIGURED = "isConfigured";
////////////////////////////////////////////////////////////////////////////
//
// IPropertyTester
//
////////////////////////////////////////////////////////////////////////////
public boolean test(final Object receiver,
final String property,
Object[] args,
Object expectedValue) {
return ExecutionUtils.runObjectLog(new RunnableObjectEx<Boolean>() {
public Boolean runObject() throws Exception {
return testEx(receiver, property);
}
}, false);
}
/**
* Tests property, can throw {@link Exception}.
*/
private static boolean testEx(Object receiver, String property) throws Exception {
// prepare IJavaElement
final IJavaElement element;
if (receiver instanceof IAdaptable) {
element = (IJavaElement) ((IAdaptable) receiver).getAdapter(IJavaElement.class);
} else {
element = null;
}
// Java tests
{
// prepare java element
if (element == null || !element.exists()) {
return false;
}
// do tests
if (PROPERTY_IS_CONFIGURED.equals(property)) {
IJavaProject javaProject = element.getJavaProject();
boolean hasJar = javaProject.findType("com.extjs.gxt.ui.client.widget.Component") != null;
if (hasJar) {
IJavaElement pkg = element.getAncestor(IJavaElement.PACKAGE_FRAGMENT);
if (pkg != null) {
IResource resource = pkg.getUnderlyingResource();
ModuleDescription module = Utils.getSingleModule(resource);
return module != null && Utils.inheritsModule(module, "com.extjs.gxt.ui.GXT");
}
}
return false;
}
}
// unknown property
throw new IllegalArgumentException(MessageFormat.format(
"Illegal property '{0}' for '{1}'.",
property,
receiver));
}
}