/*
* Copyright 2008 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.museum.client.defaultmuseum;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.museum.client.common.AbstractIssue;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.DeckPanel;
import com.google.gwt.user.client.ui.Grid;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;
/**
* <h1>DeckPanel children getOffsetWidth/Height() return 0 after r2060</h1>
*
* <p>
* Child widgets of DeckPanel used to be able to call getOffsetWidth/Height() in
* onLoad() to obtain the widget's offset dimensions. These methods now return 0
* (zero) in onLoad(), and are only correct later, e.g. in a deferred command.
* </p>
*/
public class Issue2321 extends AbstractIssue {
/**
* A set of options used to set the caption and content in the caption panel.
*/
private class ControlPanel extends Composite {
private final Grid grid = new Grid(3, 2);
public ControlPanel() {
initWidget(grid);
// Add option to detach the deck panel
Button addWidgetButton = new Button("Add widget", new ClickHandler() {
public void onClick(ClickEvent event) {
addWidgetToDeckPanel();
}
});
grid.setWidget(0, 0, addWidgetButton);
// Add option to retrieve the dimensions of the content
Button updateDimButton = new Button("Get Current Dimensions",
new ClickHandler() {
public void onClick(ClickEvent event) {
updateContentDimensions();
}
});
grid.setWidget(0, 1, updateDimButton);
// Add labels for the content height and width
grid.setHTML(1, 0, "Content Height:");
grid.setHTML(2, 0, "Content Width:");
}
/**
* Add another widget to the deck panel.
*/
public void addWidgetToDeckPanel() {
int numWidgets = deck.getWidgetCount();
HTML content = new HTML("Content " + numWidgets) {
@Override
protected void onLoad() {
updateContentDimensions();
}
};
content.setStylePrimaryName("deckPanel-content");
deck.add(content);
deck.showWidget(numWidgets);
}
/**
* Retrieve the size of the content widgets.
*/
public void updateContentDimensions() {
Widget content = deck.getWidget(deck.getWidgetCount() - 1);
grid.setHTML(1, 1, content.getOffsetHeight() + "");
grid.setHTML(2, 1, content.getOffsetWidth() + "");
}
}
/**
* The options panel to control this test.
*/
private ControlPanel controlPanel = new ControlPanel();
/**
* The {@link DeckPanel} to be tested.
*/
private DeckPanel deck;
/**
* The main container that holds the control panel and deck panel.
*/
private VerticalPanel vPanel;
@Override
public Widget createIssue() {
// Create the deck panel and grab the size of the contents on load
deck = new DeckPanel() {
@Override
protected void onLoad() {
controlPanel.addWidgetToDeckPanel();
}
};
deck.setStylePrimaryName("deckPanel");
// Combine the control panel and DeckPanel
vPanel = new VerticalPanel();
vPanel.add(controlPanel);
vPanel.add(deck);
return vPanel;
}
@Override
public String getInstructions() {
return "The height and width of the content should be greater than 0.";
}
@Override
public String getSummary() {
return "DeckPanel should return content dimensions onLoad";
}
@Override
public boolean hasCSS() {
return false;
}
}