/*
* 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.user.client.ui;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.event.logical.shared.BeforeSelectionEvent;
import com.google.gwt.event.logical.shared.BeforeSelectionHandler;
import com.google.gwt.event.logical.shared.SelectionEvent;
import com.google.gwt.event.logical.shared.SelectionHandler;
import com.google.gwt.junit.DoNotRunWith;
import com.google.gwt.junit.Platform;
import com.google.gwt.junit.client.GWTTestCase;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.DeferredCommand;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
/**
* Tests for {@link TabLayoutPanel}.
*/
public class TabLayoutPanelTest extends GWTTestCase {
static class Adder implements HasWidgetsTester.WidgetAdder {
public void addChild(HasWidgets container, Widget child) {
((TabLayoutPanel) container).add(child, "foo");
}
}
private class TestSelectionHandler implements
BeforeSelectionHandler<Integer>, SelectionHandler<Integer> {
private boolean onBeforeSelectionFired;
private boolean onSelectionFired;
public void assertOnBeforeSelectionFired(boolean expected) {
assertEquals(expected, onBeforeSelectionFired);
}
public void assertOnSelectionFired(boolean expected) {
assertEquals(expected, onSelectionFired);
}
public void onBeforeSelection(BeforeSelectionEvent<Integer> event) {
assertFalse(onSelectionFired);
onBeforeSelectionFired = true;
}
public void onSelection(SelectionEvent<Integer> event) {
assertTrue(onBeforeSelectionFired);
onSelectionFired = true;
}
}
@Override
public String getModuleName() {
return "com.google.gwt.user.DebugTest";
}
public void testAttachDetachOrder() {
HasWidgetsTester.testAll(new TabLayoutPanel(1, Unit.EM), new Adder(), true);
}
/**
* Ensures that hidden children are layed out properly when their tabs are
* selected. This has been a problem on IE6 (see issue 4596).
*/
@DoNotRunWith({Platform.HtmlUnitBug})
public void testHiddenChildLayout() {
final TabLayoutPanel p = new TabLayoutPanel(32, Unit.PX);
p.setSize("128px", "128px");
RootPanel.get().add(p);
final Label foo = new Label("foo");
final Label bar = new Label("bar");
p.add(foo, new Label("foo"));
p.add(bar, new Label("bar"));
delayTestFinish(2000);
DeferredCommand.addCommand(new Command() {
public void execute() {
assertEquals(128, foo.getOffsetWidth());
assertEquals(128 - 32, foo.getOffsetHeight());
p.selectTab(1);
DeferredCommand.addCommand(new Command() {
public void execute() {
assertEquals(128, bar.getOffsetWidth());
assertEquals(128 - 32, bar.getOffsetHeight());
finishTest();
}
});
}
});
}
/**
* Ensures that hidden children are layed out properly when their tabs are
* selected, when they're sized in EM units. This has been a problem on IE8
* (see issue 4694).
*/
@DoNotRunWith({Platform.HtmlUnitBug})
public void testHiddenChildLayoutEM() {
final TabLayoutPanel p = new TabLayoutPanel(2, Unit.EM);
p.setSize("128px", "128px");
RootPanel.get().add(p);
final Label foo = new Label("foo");
p.add(foo, new Label("foo"));
// Add the 'bar' label in a nested LayoutPanel. This is meant to test that
// layout propagates correctly into nested layout panels (something that
// should happen naturally, but we have a specific hack for on IE8).
final DockLayoutPanel inner = new DockLayoutPanel(Unit.EM);
final Label bar = new Label("bar");
inner.addSouth(bar, 2);
inner.add(new Label("center"));
p.add(inner, new Label("bar"));
delayTestFinish(2000);
DeferredCommand.addCommand(new Command() {
public void execute() {
p.selectTab(1);
DeferredCommand.addCommand(new Command() {
public void execute() {
// Assert that the 'bar' label is of non-zero size on both axes.
// The problem fixed in issue 4694 was causing its height to be
// zero on IE8, because the EM units weren't being calculated
// properly when it was initially hidden.
assertTrue(bar.getOffsetWidth() > 0);
assertTrue(bar.getOffsetHeight() > 0);
finishTest();
}
});
}
});
}
public void testInsertBeforeSelected() {
TabLayoutPanel p = new TabLayoutPanel(2, Unit.EM);
p.add(new Label("foo"), "foo");
p.selectTab(0);
p.insert(new Label("bar"), "bar", 0);
assertEquals(1, p.getSelectedIndex());
}
public void testInsertMultipleTimes() {
TabLayoutPanel p = new TabLayoutPanel(2, Unit.EM);
TextBox tb = new TextBox();
p.add(tb, "Title");
p.add(tb, "Title");
p.add(tb, "Title3");
assertEquals(1, p.getWidgetCount());
assertEquals(0, p.getWidgetIndex(tb));
Iterator<Widget> i = p.iterator();
assertTrue(i.hasNext());
assertTrue(tb.equals(i.next()));
assertFalse(i.hasNext());
Label l = new Label();
p.add(l, "Title");
p.add(l, "Title");
p.add(l, "Title3");
assertEquals(2, p.getWidgetCount());
assertEquals(0, p.getWidgetIndex(tb));
assertEquals(1, p.getWidgetIndex(l));
p.insert(l, "Title", 0);
assertEquals(2, p.getWidgetCount());
assertEquals(0, p.getWidgetIndex(l));
assertEquals(1, p.getWidgetIndex(tb));
p.insert(l, "Title", 1);
assertEquals(2, p.getWidgetCount());
assertEquals(0, p.getWidgetIndex(l));
assertEquals(1, p.getWidgetIndex(tb));
p.insert(l, "Title", 2);
assertEquals(2, p.getWidgetCount());
assertEquals(0, p.getWidgetIndex(tb));
assertEquals(1, p.getWidgetIndex(l));
}
public void testInsertWithHTML() {
TabLayoutPanel p = new TabLayoutPanel(2, Unit.EM);
Label l = new Label();
p.add(l, "three");
p.insert(new HTML("<b>hello</b>"), "two", true, 0);
p.insert(new HTML("goodbye"), "one", false, 0);
assertEquals(3, p.getWidgetCount());
}
/**
* Tests to ensure that arbitrary widgets can be added/inserted effectively.
*/
public void testInsertWithWidgets() {
TabLayoutPanel p = new TabLayoutPanel(2, Unit.EM);
TextBox wa = new TextBox();
CheckBox wb = new CheckBox();
VerticalPanel wc = new VerticalPanel();
wc.add(new Label("First"));
wc.add(new Label("Second"));
p.add(new Label("Content C"), wc);
p.insert(new Label("Content B"), wb, 0);
p.insert(new Label("Content A"), wa, 0);
// Call these to ensure we don't throw an exception.
assertNotNull(p.getTabWidget(0));
assertNotNull(p.getTabWidget(1));
assertNotNull(p.getTabWidget(2));
assertEquals(3, p.getWidgetCount());
}
public void testIsWidget() {
TabLayoutPanel p = new TabLayoutPanel(2, Unit.EM);
IsWidgetImpl add = new IsWidgetImpl(new Label("add"));
IsWidgetImpl addText = new IsWidgetImpl(new Label("addText"));
IsWidgetImpl addHtml = new IsWidgetImpl(new Label("addHtml"));
IsWidgetImpl addWidget = new IsWidgetImpl(new Label("addWidget"));
IsWidgetImpl added = new IsWidgetImpl(new Label("added widget"));
IsWidgetImpl insert = new IsWidgetImpl(new Label("insText"));
IsWidgetImpl insText = new IsWidgetImpl(new Label("insText"));
IsWidgetImpl insHtml = new IsWidgetImpl(new Label("insHtml"));
IsWidgetImpl insWidget = new IsWidgetImpl(new Label("insWidget"));
IsWidgetImpl inserted = new IsWidgetImpl(new Label("inserted widget"));
p.add(add);
p.add(addText, "added text");
p.add(addHtml, "<b>added html</b>", true);
p.add(addWidget, added);
p.insert(insert, 0);
p.insert(insText, "inserted text", 2);
p.insert(insHtml, "<b>inserted html</b>", true, 4);
p.insert(insWidget, inserted, 6);
assertEquals(8, p.getWidgetCount());
assertEquals(0, p.getWidgetIndex(insert));
assertEquals(1, p.getWidgetIndex(add));
assertEquals(2, p.getWidgetIndex(insText));
assertEquals(3, p.getWidgetIndex(addText));
assertEquals(4, p.getWidgetIndex(insHtml));
assertEquals(5, p.getWidgetIndex(addHtml));
assertEquals(6, p.getWidgetIndex(insWidget));
assertEquals(7, p.getWidgetIndex(addWidget));
assertEquals("", p.getTabWidget(insert).getElement().getInnerHTML());
assertEquals("", p.getTabWidget(add).getElement().getInnerHTML());
assertEquals("inserted text",
p.getTabWidget(insText).getElement().getInnerHTML());
assertEquals("added text",
p.getTabWidget(addText).getElement().getInnerHTML());
assertEquals("<b>inserted html</b>",
p.getTabWidget(insHtml).getElement().getInnerHTML().toLowerCase());
assertEquals("<b>added html</b>",
p.getTabWidget(addHtml).getElement().getInnerHTML().toLowerCase());
assertEquals(inserted.w, p.getTabWidget(insWidget));
assertEquals(added.w, p.getTabWidget(addWidget));
class Handler implements SelectionHandler<Integer> {
boolean fired = false;
public void onSelection(SelectionEvent<Integer> event) {
fired = true;
}
}
Handler handler = new Handler();
p.addSelectionHandler(handler);
p.selectTab(addText, true);
assertTrue(handler.fired);
assertEquals(3, p.getSelectedIndex());
handler.fired = false;
p.selectTab(insWidget);
assertTrue(handler.fired);
assertEquals(6, p.getSelectedIndex());
}
public void testIterator() {
TabLayoutPanel p = new TabLayoutPanel(2, Unit.EM);
HTML foo = new HTML("foo");
HTML bar = new HTML("bar");
HTML baz = new HTML("baz");
p.add(foo, "foo");
p.add(bar, "bar");
p.add(baz, "baz");
// Iterate over the entire set and make sure it stops correctly.
Iterator<Widget> it = p.iterator();
assertTrue(it.hasNext());
assertTrue(it.next() == foo);
assertTrue(it.hasNext());
assertTrue(it.next() == bar);
assertTrue(it.hasNext());
assertTrue(it.next() == baz);
assertFalse(it.hasNext());
// Test removing using the iterator.
it = p.iterator();
it.next();
it.remove();
assertTrue(it.next() == bar);
assertTrue(p.getWidgetCount() == 2);
assertTrue(p.getWidget(0) == bar);
assertTrue(p.getWidget(1) == baz);
}
/**
* Test that removing a widget removes the associated tab.
*/
public void testRemoveWidgetFromParent() {
TabLayoutPanel p = new TabLayoutPanel(2, Unit.EM);
Label content0 = new Label("Content 0");
Label header0 = new Label("Header 0");
p.add(content0, header0);
Label content1 = new Label("Content 1");
Label header1 = new Label("Header 1");
p.add(content1, header1);
Label content2 = new Label("Content 2");
Label header2 = new Label("Header 2");
p.add(content2, header2);
assertEquals(3, p.getWidgetCount());
assertEquals(content0, p.getWidget(0));
assertEquals(content1, p.getWidget(1));
assertEquals(content2, p.getWidget(2));
assertEquals(header0, p.getTabWidget(0));
assertEquals(header1, p.getTabWidget(1));
assertEquals(header2, p.getTabWidget(2));
// Remove content.
content1.removeFromParent();
assertNull(content1.getParent());
assertNull(header1.getParent());
assertEquals(2, p.getWidgetCount());
assertEquals(content0, p.getWidget(0));
assertEquals(content2, p.getWidget(1));
assertEquals(header0, p.getTabWidget(0));
assertEquals(header2, p.getTabWidget(1));
// Remove a header.
header2.removeFromParent();
assertNull(content2.getParent());
assertNull(header2.getParent());
assertEquals(1, p.getWidgetCount());
assertEquals(content0, p.getWidget(0));
assertEquals(header0, p.getTabWidget(0));
}
public void testSelectionEvents() {
TabLayoutPanel p = new TabLayoutPanel(2, Unit.EM);
RootPanel.get().add(p);
p.add(new Button("foo"), "foo");
p.add(new Button("bar"), "bar");
// Make sure selecting a tab fires both events in the right order.
TestSelectionHandler handler = new TestSelectionHandler();
p.addBeforeSelectionHandler(handler);
p.addSelectionHandler(handler);
p.selectTab(1);
handler.assertOnBeforeSelectionFired(true);
handler.assertOnSelectionFired(true);
}
public void testSelectionEventsNoFire() {
TabLayoutPanel p = new TabLayoutPanel(2, Unit.EM);
RootPanel.get().add(p);
p.add(new Button("foo"), "foo");
p.add(new Button("bar"), "bar");
TestSelectionHandler handler = new TestSelectionHandler();
p.addBeforeSelectionHandler(handler);
p.addSelectionHandler(handler);
p.selectTab(1, false);
handler.assertOnBeforeSelectionFired(false);
handler.assertOnSelectionFired(false);
}
/**
* Issue 6034: setTabText() removes the tab.
*/
public void testSetTabText() {
TabLayoutPanel p = new TabLayoutPanel(1, Unit.EM);
Label[] labels = new Label[3];
for (int i = 0; i < labels.length; i++) {
labels[i] = new Label("content" + i);
p.add(labels[i]);
}
// Set the text of tab 1.
p.setTabText(1, "new text");
assertEquals(3, p.getWidgetCount());
assertEquals("new text", ((HasText) p.getTabWidget(1)).getText());
}
/**
* Test that {@link TabLayoutPanel} calls widget.setVisible(true/false) on
* each widget, when it is shown/hidden.
*/
public void testSetWidgetVisible() {
TabLayoutPanel p = new TabLayoutPanel(1, Unit.EM);
Label[] labels = new Label[3];
for (int i = 0; i < labels.length; i++) {
labels[i] = new Label("content" + i);
p.add(labels[i]);
}
// Initially, the first widget should be visible.
p.forceLayout();
assertTrue(labels[0].isVisible());
assertFalse(labels[1].isVisible());
assertFalse(labels[2].isVisible());
// Show widget at index 1, make sure it becomes visible, and the one at
// index 0 is hidden.
p.selectTab(1);
p.forceLayout();
assertFalse(labels[0].isVisible());
assertTrue(labels[1].isVisible());
assertFalse(labels[2].isVisible());
// Show widget at index 0, make sure it changed back to the initial state.
p.selectTab(0);
p.forceLayout();
assertTrue(labels[0].isVisible());
assertFalse(labels[1].isVisible());
assertFalse(labels[2].isVisible());
}
/**
* For legacy reasons, {@link TabLayoutPanel#selectTab(Widget)} should call
* {@link TabLayoutPanel#selectTab(int)}.
*/
public void testSelectTabLegacy() {
final List<Integer> called = new ArrayList<Integer>();
TabLayoutPanel panel = new TabLayoutPanel(100.0, Unit.PX) {
@Override
public void selectTab(int index) {
called.add(index);
super.selectTab(index);
}
};
Label tab1 = new Label("Tab 1");
panel.add(new Label("Tab 0"), "Tab 0");
panel.add(tab1, "Tab 1");
panel.add(new Label("Tab 2"), "Tab 2");
called.clear();
panel.selectTab(tab1);
assertEquals(1, called.size());
assertEquals(1, called.get(0).intValue());
}
/**
* Tests that tabs actually line up properly (see issue 4447).
*/
@DoNotRunWith(Platform.HtmlUnitLayout)
public void testTabLayout() {
TabLayoutPanel p = new TabLayoutPanel(2, Unit.EM);
RootPanel.get().add(p);
p.add(new Button("foo"), new Label("foo"));
p.add(new Button("bar"), new Label("bar"));
assertEquals(p.getTabWidget(0).getElement().getOffsetTop(),
p.getTabWidget(1).getElement().getOffsetTop());
}
}