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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 com.google.gwt.core.ext.TreeLogger;
- 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.grid.renderers.AbstractRendererConnector;
-
- /**
- * Generates type data for renderer connectors. Specifically, stores the return
- * type of the overridden {@link AbstractRendererConnector#getRenderer()
- * getRenderer} method to enable automatic creation of an instance of the proper
- * renderer type.
- *
- * @see WidgetInitVisitor
- *
- * @since
- * @author Vaadin Ltd
- */
- public class RendererInitVisitor extends TypeVisitor {
-
- @Override
- public void visitConnector(TreeLogger logger, JClassType type,
- ConnectorBundle bundle) throws UnableToCompleteException {
-
- if (ConnectorBundle.isConnectedRendererConnector(type)) {
-
- // The class in which createRenderer is implemented
- JClassType createRendererClass = ConnectorBundle
- .findInheritedMethod(type, "createRenderer")
- .getEnclosingType();
-
- JMethod getRenderer = ConnectorBundle.findInheritedMethod(type,
- "getRenderer");
- JClassType rendererType = getRenderer.getReturnType().isClass();
-
- // Needs GWT constructor if createRenderer is not overridden
- if (createRendererClass.getQualifiedSourceName().equals(
- AbstractRendererConnector.class.getCanonicalName())) {
-
- bundle.setNeedsGwtConstructor(rendererType);
-
- // Also needs renderer type to find the right GWT constructor
- bundle.setNeedsReturnType(type, getRenderer);
- }
- }
- }
- }
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