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- /*
- * Copyright 2000-2014 Vaadin Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
- *
- * 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.vaadin.server.widgetsetutils.metadata;
-
- import java.util.Collection;
-
- import com.google.gwt.core.ext.TreeLogger;
- import com.google.gwt.core.ext.TreeLogger.Type;
- import com.google.gwt.core.ext.UnableToCompleteException;
- import com.google.gwt.core.ext.typeinfo.JClassType;
- import com.google.gwt.core.ext.typeinfo.JMethod;
- import com.vaadin.client.ui.AbstractComponentConnector;
- import com.vaadin.shared.annotations.DelegateToWidget;
-
- public class WidgetInitVisitor extends TypeVisitor {
-
- @Override
- public void visitConnector(TreeLogger logger, JClassType type,
- ConnectorBundle bundle) throws UnableToCompleteException {
- if (ConnectorBundle.isConnectedComponentConnector(type)) {
- // The class in which createWidget is implemented
- JClassType createWidgetClass = findInheritedMethod(type,
- "createWidget").getEnclosingType();
-
- JMethod getWidget = findInheritedMethod(type, "getWidget");
- JClassType widgetType = getWidget.getReturnType().isClass();
-
- // Needs GWT constructor if createWidget is not overridden
- if (createWidgetClass.getQualifiedSourceName().equals(
- AbstractComponentConnector.class.getCanonicalName())) {
- bundle.setNeedsGwtConstructor(widgetType);
-
- // Also needs widget type to find the right GWT constructor
- bundle.setNeedsReturnType(type, getWidget);
- }
-
- // Check state properties for @DelegateToWidget
- JMethod getState = findInheritedMethod(type, "getState");
- JClassType stateType = getState.getReturnType().isClass();
-
- Collection<Property> properties = bundle.getProperties(stateType);
- for (Property property : properties) {
- DelegateToWidget delegateToWidget = property
- .getAnnotation(DelegateToWidget.class);
- if (delegateToWidget != null) {
- // Generate meta data required for @DelegateToWidget
- bundle.setNeedsDelegateToWidget(property);
-
- // Find the delegate target method
- String methodName = DelegateToWidget.Helper
- .getDelegateTarget(property.getName(),
- delegateToWidget.value());
- JMethod delegatedSetter = findInheritedMethod(widgetType,
- methodName, property.getPropertyType());
- if (delegatedSetter == null) {
- logger.log(
- Type.ERROR,
- widgetType.getName()
- + "."
- + methodName
- + "("
- + property.getPropertyType()
- .getSimpleSourceName()
- + ") required by @DelegateToWidget for "
- + stateType.getName() + "."
- + property.getName()
- + " can not be found.");
- throw new UnableToCompleteException();
- }
- bundle.setNeedsInvoker(widgetType, delegatedSetter);
-
- // GWT code needs widget type to find the target method
- bundle.setNeedsReturnType(type, getWidget);
- }
- }
-
- }
- }
- }
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