com.google.gwt.core.client.prefetch.RunAsyncCode Maven / Gradle / Ivy
/*
* Copyright 2009 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.core.client.prefetch;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.impl.AsyncFragmentLoader;
/**
* A request to load the code for a
* {@link com.google.gwt.core.client.GWT#runAsync(Class, com.google.gwt.core.client.RunAsyncCallback)}
* split point.
*/
public class RunAsyncCode implements PrefetchableResource {
/**
* Create an instance for the split point named with the given class. The
* provided class must be a class literal.
*
* @param splitPoint a Class literal used to name the split point
*/
public static RunAsyncCode runAsyncCode(Class splitPoint) {
// This is a place holder for development mode.
return forSplitPointNumber(-1);
}
/**
* Not for direct use by application code. Calls to this method are created by
* the compiler.
*/
static RunAsyncCode forSplitPointNumber(int splitPoint) {
return new RunAsyncCode(splitPoint);
}
private final int splitPoint;
private RunAsyncCode(int splitPoint) {
this.splitPoint = splitPoint;
}
public int getSplitPoint() {
return splitPoint;
}
/**
* Ask whether this code has already been loaded.
*/
public boolean isLoaded() {
if (!GWT.isScript()) {
return true;
}
return AsyncFragmentLoader.BROWSER_LOADER.isAlreadyLoaded(splitPoint);
}
}