/*
* Copyright 2011 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;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.core.client.Scheduler.ScheduledCommand;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.event.logical.shared.ResizeEvent;
import com.google.gwt.event.logical.shared.ResizeHandler;
import com.google.gwt.junit.DoNotRunWith;
import com.google.gwt.junit.Platform;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.Timer;
import java.util.ArrayList;
import java.util.List;
/**
* Tests for {@link ResizeLayoutPanel}.
*/
public class ResizeLayoutPanelTest extends
SimplePanelTestBase<ResizeLayoutPanel> {
/**
* A custom implementation of {@link ResizeHandler} used for testing.
*/
private static class CustomResizeHandler implements ResizeHandler {
private boolean resizeFired;
public void assertResizeFired(boolean expected) {
assertEquals(expected, resizeFired);
resizeFired = false;
}
public void onResize(ResizeEvent event) {
assertFalse(resizeFired);
resizeFired = true;
}
}
@Override
public String getModuleName() {
return "com.google.gwt.user.User";
}
/**
* Test that a resize event is fired on attach.
*/
public void testAttach() {
final ResizeLayoutPanel panel = createPanel();
panel.setWidget(new Label("hello world"));
final CustomResizeHandler handler = new CustomResizeHandler();
panel.addResizeHandler(handler);
handler.assertResizeFired(false);
delayTestFinish(10000);
RootPanel.get().add(panel);
Scheduler.get().scheduleDeferred(new ScheduledCommand() {
public void execute() {
handler.assertResizeFired(true);
panel.removeFromParent();
finishTest();
}
});
}
/**
* Test that changing the font size triggers a resize event.
*/
@DoNotRunWith(Platform.HtmlUnitLayout)
public void testChangeFontSize() {
// Create a panel and add a handler.
ResizeLayoutPanel panel = createPanel();
panel.setWidget(new Label("hello world"));
panel.setWidth("10em");
panel.setHeight("10em");
final CustomResizeHandler handler = new CustomResizeHandler();
panel.addResizeHandler(handler);
handler.assertResizeFired(false);
// Create an outer container and attach it.
final SimplePanel container = new SimplePanel();
container.getElement().getStyle().setFontSize(10, Unit.PT);
container.setHeight("10em");
container.setWidth("10em");
container.setWidget(panel);
RootPanel.get().add(container);
// Wait for the resize event from attaching.
delayTestFinish(10000);
Scheduler.get().scheduleDeferred(new ScheduledCommand() {
public void execute() {
handler.assertResizeFired(true); // Triggered by attach.
handler.assertResizeFired(false);
// Change the font size.
container.getElement().getStyle().setFontSize(12, Unit.PT);
new Timer() {
@Override
public void run() {
handler.assertResizeFired(true);
container.removeFromParent();
finishTest();
}
}.schedule(250);
}
});
}
/**
* Test that resizing the outer container triggers a resize event.
*/
@DoNotRunWith(Platform.HtmlUnitLayout)
public void testEnlargeContainerHeight() {
final SimplePanel container = new SimplePanel();
container.setPixelSize(100, 100);
testResizeContainer(container, new Command() {
public void execute() {
container.setHeight("101px");
}
});
}
/**
* Test that resizing the outer container triggers a resize event.
*/
@DoNotRunWith(Platform.HtmlUnitLayout)
public void testEnlargeContainerWidth() {
final SimplePanel container = new SimplePanel();
container.setPixelSize(100, 100);
testResizeContainer(container, new Command() {
public void execute() {
container.setWidth("101px");
}
});
}
/**
* Test that resizing the outer container triggers a resize event even if the
* dimensions are too small to render a scrollbar.
*/
@DoNotRunWith(Platform.HtmlUnitLayout)
public void testEnlargeSmallContainerHeight() {
final SimplePanel container = new SimplePanel();
container.setPixelSize(20, 20);
testResizeContainer(container, new Command() {
public void execute() {
container.setHeight("21px");
}
});
}
/**
* Test that resizing the outer container triggers a resize event even if the
* dimensions are too small to render a scrollbar.
*/
@DoNotRunWith(Platform.HtmlUnitLayout)
public void testEnlargeSmallContainerWidth() {
final SimplePanel container = new SimplePanel();
container.setPixelSize(20, 20);
testResizeContainer(container, new Command() {
public void execute() {
container.setWidth("21px");
}
});
}
public void testProvidesResize() {
final List<String> resized = new ArrayList<String>();
ResizeLayoutPanel panel = createPanel();
panel.setWidget(new LayoutPanel() {
@Override
public void onResize() {
super.onResize();
resized.add("resized");
}
});
delayTestFinish(10000);
RootPanel.get().add(panel);
Scheduler.get().scheduleDeferred(new ScheduledCommand() {
public void execute() {
assertEquals(1, resized.size());
finishTest();
}
});
}
/**
* Test that resizing the outer container triggers a resize event.
*/
@DoNotRunWith(Platform.HtmlUnitLayout)
public void testShrinkContainerHeight() {
final SimplePanel container = new SimplePanel();
container.setPixelSize(100, 100);
testResizeContainer(container, new Command() {
public void execute() {
container.setHeight("99px");
}
});
}
/**
* Test that resizing the outer container triggers a resize event.
*/
@DoNotRunWith(Platform.HtmlUnitLayout)
public void testShrinkContainerWidth() {
final SimplePanel container = new SimplePanel();
container.setPixelSize(100, 100);
testResizeContainer(container, new Command() {
public void execute() {
container.setWidth("99px");
}
});
}
/**
* Test that resizing the outer container triggers a resize event even if the
* dimensions are too small to render a scrollbar.
*/
@DoNotRunWith(Platform.HtmlUnitLayout)
public void testShrinkSmallContainerHeight() {
final SimplePanel container = new SimplePanel();
container.setPixelSize(21, 21);
testResizeContainer(container, new Command() {
public void execute() {
container.setHeight("20px");
}
});
}
/**
* Test that resizing the outer container triggers a resize event even if the
* dimensions are too small to render a scrollbar.
*/
@DoNotRunWith(Platform.HtmlUnitLayout)
public void testShrinkSmallContainerWidth() {
final SimplePanel container = new SimplePanel();
container.setPixelSize(21, 21);
testResizeContainer(container, new Command() {
public void execute() {
container.setWidth("20px");
}
});
}
@Override
protected ResizeLayoutPanel createPanel() {
return new ResizeLayoutPanel();
}
/**
* Test that resizing the outer container triggers a resize event.
*
* @param container the container that will hold the panel
* @param resizeCommand the command that resizes the container
*/
private void testResizeContainer(final SimplePanel container,
final Command resizeCommand) {
// Create a panel and add a handler.
ResizeLayoutPanel panel = createPanel();
panel.setWidget(new Label("hello world"));
panel.setWidth("100%");
panel.setHeight("100%");
final CustomResizeHandler handler = new CustomResizeHandler();
panel.addResizeHandler(handler);
handler.assertResizeFired(false);
// Create an outer container and attach it.
container.setWidget(panel);
RootPanel.get().add(container);
// Wait for the resize event from attaching.
delayTestFinish(10000);
Scheduler.get().scheduleDeferred(new ScheduledCommand() {
public void execute() {
handler.assertResizeFired(true); // Triggered by attach.
// Change the size of the container.
resizeCommand.execute();
new Timer() {
@Override
public void run() {
handler.assertResizeFired(true);
container.removeFromParent();
finishTest();
}
}.schedule(250);
}
});
}
}