/*
* 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.user.client.ui.impl;
import com.google.gwt.event.dom.client.ErrorEvent;
import com.google.gwt.event.dom.client.ErrorHandler;
import com.google.gwt.event.dom.client.LoadEvent;
import com.google.gwt.event.dom.client.LoadHandler;
import com.google.gwt.junit.DoNotRunWith;
import com.google.gwt.junit.Platform;
import com.google.gwt.junit.client.GWTTestCase;
import com.google.gwt.safehtml.shared.UriUtils;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.ImageTest;
import com.google.gwt.user.client.ui.RootPanel;
/**
* Tests for the ClippedImagePrototype implementation. Tests are done to ensure
* that clipped images are generated which match the prototype's specification,
* and that applications of the prototype to existing images in both
* clipped/unclipped mode change the image so that it matches the prototype.
* Tests are also done to ensure that load events fire correctly after the
* application of the prototype to the image.
*/
public class ClippedImagePrototypeTest extends GWTTestCase {
private static class TestLoadHandler implements LoadHandler {
private int onloadEventFireCount = 0;
public int getOnloadEventFireCount() {
return onloadEventFireCount;
}
public void onLoad(LoadEvent event) {
onloadEventFireCount++;
}
}
@Override
public String getModuleName() {
return "com.google.gwt.user.UserTest";
}
/**
* Tests that a clipped image can be transformed to match a given prototype.
* Also checks to make sure that a load event is fired on when
* {@link com.google.gwt.user.client.ui.impl.ClippedImagePrototype#applyTo(com.google.gwt.user.client.ui.Image)}
* is called.
*
* TODO(jlabanca): Enable this test when issue 863 is fixed
*/
@DoNotRunWith({Platform.HtmlUnitBug})
public void disabledTestApplyToClippedImage() {
final Image image = new Image("counting-backwards.png", 12, 13, 8, 8);
assertEquals(12, image.getOriginLeft());
assertEquals(13, image.getOriginTop());
assertEquals(8, image.getWidth());
assertEquals(8, image.getHeight());
assertEquals("clipped", ImageTest.getCurrentImageStateName(image));
final TestLoadHandler handler = new TestLoadHandler() {
@Override
public void onLoad(LoadEvent event) {
super.onLoad(event);
if (image.getOriginLeft() == 12 && image.getOriginTop() == 13) {
ClippedImagePrototype clippedImagePrototype = new ClippedImagePrototype(
UriUtils.fromString("counting-forwards.png"), 16, 16, 16, 16);
clippedImagePrototype.applyTo(image);
assertEquals(16, image.getOriginLeft());
assertEquals(16, image.getOriginTop());
assertEquals(16, image.getWidth());
assertEquals(16, image.getHeight());
assertEquals("clipped", ImageTest.getCurrentImageStateName(image));
}
}
};
image.addLoadHandler(handler);
image.addErrorHandler(new ErrorHandler() {
public void onError(ErrorEvent event) {
fail("The image " + image.getUrl() + " failed to load.");
}
});
RootPanel.get().add(image);
delayTestFinish(2000);
Timer t = new Timer() {
@Override
public void run() {
assertEquals(2, handler.getOnloadEventFireCount());
finishTest();
}
};
t.schedule(1000);
}
/**
* Tests that an unclipped image can be transformed to match a given
* prototype. Also checks to make sure that a load event is fired on when
* <code>applyTo(Image)</code> is called.
*/
/*
* This test has been commented out because of issue #863
*
* public void testApplyToUnclippedImage() {
* final Image image = new Image("counting-backwards.png");
*
* assertEquals(0, image.getOriginLeft()); assertEquals(0,
* image.getOriginTop()); assertEquals("unclipped",
* ImageTest.getCurrentImageStateName(image));
*
* final ArrayList onloadEventFireCounter = new ArrayList();
*
* image.addLoadListener(new LoadListener() { public void onError(Widget
* sender) { fail("The image " + ((Image) sender).getUrl() + " failed to
* load."); }
*
* public void onLoad(Widget sender) { onloadEventFireCounter.add(new
* Object());
*
* if (ImageTest.getCurrentImageStateName(image).equals("unclipped")) {
*
* assertEquals(32, image.getWidth()); assertEquals(32, image.getHeight());
*
* ClippedImagePrototype clippedImagePrototype = new
* ClippedImagePrototype("counting-forwards.png", 16, 16, 16, 16);
*
* clippedImagePrototype.adjust(image);
*
* assertEquals(16, image.getOriginLeft()); assertEquals(16,
* image.getOriginTop()); assertEquals(16, image.getWidth()); assertEquals(16,
* image.getHeight()); assertEquals("counting-forwards.png", image.getUrl());
* assertEquals("clipped", ImageTest.getCurrentImageStateName(image)); } } });
*
* RootPanel.get().add(image); delayTestFinish(2000);
*
* Timer t = new Timer() { public void run() { assertEquals(2,
* onloadEventFireCounter.size()); finishTest(); } };
*
* t.schedule(1000); }
*/
/**
* Tests that new clipped images can be generated from a prototype by calling
* {@link ClippedImagePrototype#createImage()}.
*/
public void testGenerateNewImage() {
ClippedImagePrototype clippedImagePrototype = new ClippedImagePrototype(
UriUtils.fromString("counting-forwards.png"), 16, 16, 16, 16);
Image image = clippedImagePrototype.createImage();
RootPanel.get().add(image);
assertEquals(16, image.getOriginLeft());
assertEquals(16, image.getOriginTop());
assertEquals(16, image.getWidth());
assertEquals(16, image.getHeight());
assertEquals("counting-forwards.png", image.getUrl());
assertEquals("clipped", ImageTest.getCurrentImageStateName(image));
}
}