/*
* Copyright 2007 Google Inc.
*
* 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.google.gwt.libideas.resources.rg;
import com.google.gwt.core.ext.BadPropertyValueException;
import com.google.gwt.core.ext.PropertyOracle;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JMethod;
import com.google.gwt.libideas.resources.client.impl.SoundResourcePrototype;
import com.google.gwt.libideas.resources.rebind.ResourceContext;
import com.google.gwt.libideas.resources.rebind.ResourceGenerator;
import com.google.gwt.libideas.resources.rebind.ResourceGeneratorUtil;
import com.google.gwt.user.client.Element;
import com.google.gwt.user.rebind.SourceWriter;
import java.net.URL;
/**
* Creates implementations of SoundResources.
*/
public class SoundResourceGenerator extends ResourceGenerator {
private ResourceContext context;
private SoundBundleBuilder builder;
private boolean soundEnabled;
@Override
public void init(TreeLogger logger, ResourceContext context)
throws UnableToCompleteException {
this.context = context;
builder = new SoundBundleBuilder();
// Determine if sound is enabled in the build context
PropertyOracle po = context.getGeneratorContext().getPropertyOracle();
try {
soundEnabled = Boolean.parseBoolean(po.getPropertyValue(logger,
"ResourceBundle.enableSound"));
} catch (BadPropertyValueException e) {
logger.log(TreeLogger.ERROR, "Bad property", e);
throw new UnableToCompleteException();
}
}
/**
* Get the resource attached to a method and assimilate it.
*/
@Override
public void prepare(TreeLogger logger, JMethod method)
throws UnableToCompleteException {
if (!soundEnabled) {
return;
}
URL[] urls = ResourceGeneratorUtil.findResources(logger, context, method);
if (urls.length != 1) {
logger.log(TreeLogger.ERROR, "Exactly one resource must be specified",
null);
throw new UnableToCompleteException();
}
builder.assimilate(logger, method.getName(), urls[0]);
}
/**
* Create instances of {@link SoundResourcePrototype}.
*/
@Override
public void writeAssignment(TreeLogger logger, JMethod method)
throws UnableToCompleteException {
SourceWriter sw = context.getSourceWriter();
sw.print("new ");
sw.print(SoundResourcePrototype.class.getName());
sw.println("(");
sw.indent();
sw.print("FLASH_ELEMENT, \"");
sw.print(method.getName());
sw.print("\", ");
sw.print(String.valueOf(builder.getIndex(method.getName())));
sw.print(", ");
sw.print(String.valueOf(builder.getDuration(method.getName())));
sw.outdent();
sw.println(")");
}
/**
* Save the plugins's Element in a class field.
*/
@Override
public void writeFields(TreeLogger logger) throws UnableToCompleteException {
String urlExpression;
if (soundEnabled) {
urlExpression = builder.writeBundle(logger, context);
} else {
urlExpression = "null";
}
SourceWriter sw = context.getSourceWriter();
sw.print("private final ");
sw.print(Element.class.getName());
sw.print(" FLASH_ELEMENT = ");
sw.print(SoundResourcePrototype.class.getName());
sw.print(".attach(");
sw.print(urlExpression);
sw.println(");");
}
}