/*******************************************************************************
* 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.model.property.accessor;
import com.google.gdt.eclipse.designer.model.widgets.panels.PanelInfo;
import org.eclipse.wb.core.model.JavaInfo;
import org.eclipse.wb.core.model.association.InvocationAssociation;
import org.eclipse.wb.internal.core.model.property.accessor.ExpressionAccessor;
import org.eclipse.wb.internal.core.model.util.TemplateUtils;
import org.eclipse.wb.internal.core.utils.ast.AstEditor;
import org.eclipse.wb.internal.core.utils.ast.DomGenerics;
import org.eclipse.wb.internal.core.utils.ast.StatementTarget;
import org.eclipse.wb.internal.core.utils.execution.ExecutionUtils;
import org.eclipse.wb.internal.core.utils.execution.RunnableEx;
import org.eclipse.jdt.core.dom.Expression;
import org.eclipse.jdt.core.dom.MethodInvocation;
import org.eclipse.jdt.core.dom.Statement;
import java.util.List;
/**
* Implementation of {@link ExpressionAccessor} for <code>setCellXXX(Widget,value)</code>
* invocations.
*
* @author scheglov_ke
* @coverage gwt.model
*/
public final class CellExpressionAccessor extends ExpressionAccessor {
private final PanelInfo m_panel;
private final String m_methodSignature;
////////////////////////////////////////////////////////////////////////////
//
// Constructor
//
////////////////////////////////////////////////////////////////////////////
public CellExpressionAccessor(PanelInfo panel, String methodName, String valueTypeName) {
m_panel = panel;
m_methodSignature = methodName + "(com.google.gwt.user.client.ui.Widget," + valueTypeName + ")";
}
////////////////////////////////////////////////////////////////////////////
//
// ExpressionAccessor
//
////////////////////////////////////////////////////////////////////////////
@Override
public Expression getExpression(JavaInfo javaInfo) throws Exception {
for (MethodInvocation invocation : m_panel.getMethodInvocations(m_methodSignature)) {
List<Expression> arguments = DomGenerics.arguments(invocation);
Expression widgetExpression = arguments.get(0);
if (javaInfo.isRepresentedBy(widgetExpression)) {
return arguments.get(1);
}
}
return null;
}
@Override
public boolean setExpression(final JavaInfo javaInfo, final String source) throws Exception {
final AstEditor editor = javaInfo.getEditor();
// check for existing invocation
{
final Expression expression = getExpression(javaInfo);
if (expression != null) {
if (source != null) {
ExecutionUtils.run(javaInfo, new RunnableEx() {
public void run() throws Exception {
editor.replaceExpression(expression, source);
}
});
} else {
ExecutionUtils.run(javaInfo, new RunnableEx() {
public void run() throws Exception {
editor.removeEnclosingStatement(expression);
}
});
}
return true;
}
}
// add new invocation
if (source != null) {
ExecutionUtils.run(javaInfo, new RunnableEx() {
public void run() throws Exception {
if (javaInfo.getAssociation() instanceof InvocationAssociation) {
StatementTarget target = getTarget(javaInfo);
String arguments = TemplateUtils.format("{0}, {1}", javaInfo, source);
m_panel.addMethodInvocation(target, m_methodSignature, arguments);
}
}
private StatementTarget getTarget(JavaInfo javaInfo) {
Statement targetStatement = javaInfo.getAssociation().getStatement();
return new StatementTarget(targetStatement, false);
}
});
return true;
}
// no changes
return false;
}
}