/*
* Copyright 2010 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.DivElement;
import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.SpanElement;
import com.google.gwt.i18n.client.BidiUtils;
import com.google.gwt.i18n.client.HasDirection.Direction;
import com.google.gwt.junit.client.GWTTestCase;
import com.google.gwt.user.client.ui.HasHorizontalAlignment.AutoHorizontalAlignmentConstant;
import com.google.gwt.user.client.ui.HasHorizontalAlignment.HorizontalAlignmentConstant;
/**
* Tests {@link Label}.
* Note: tests only the alignment logic. direction logic is tested at
* {@link HTMLTest}, and other stuff remains currently untested.
*/
public class LabelTest extends GWTTestCase {
static final String html1 = "<b>hello</b><i>world</i>:)";
static final String html2 = "<b>goodbye</b><i>world</i>:(";
protected final String EN_TEXT = "abc";
protected final String IW_TEXT = "\u05e0\u05e1\u05e2";
private Label label;
@Override
public String getModuleName() {
return "com.google.gwt.user.User";
}
public void testSetAutoHorizontalAlignmentNoDirectionEstimator() {
Element elem = createAttachedDivElement();
// Initialize the div with a specific direction, to verify it remembers its
// original direction on setText with no direction argument.
BidiUtils.setDirectionOnElement(elem, Direction.LTR);
label = Label.wrap(elem);
label.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_LEFT);
assertAlign("horizontal alignment was set to left by " +
"setHorizontalAlignment, but is not",
HasHorizontalAlignment.ALIGN_LEFT);
label.setAutoHorizontalAlignment(null);
assertEquals("text-align is not empty after " +
"setAutoHorizontalAlignment(null)", "",
label.getElement().getStyle().getTextAlign());
label.setAutoHorizontalAlignment(HasHorizontalAlignment.ALIGN_RIGHT);
assertAlign("horizontal alignment was set to right by " +
"setAutoHorizontalAlignment, but is not",
HasHorizontalAlignment.ALIGN_RIGHT);
label.setText(IW_TEXT, Direction.RTL);
label.setAutoHorizontalAlignment(
HasAutoHorizontalAlignment.ALIGN_CONTENT_END);
assertAlign("automatic horizontal alignment was set to ALIGN_CONTENT_END," +
" content was declared RTL", HasHorizontalAlignment.ALIGN_LEFT,
HasAutoHorizontalAlignment.ALIGN_CONTENT_END);
label.setText(EN_TEXT);
assertAlign("automatic horizontal alignment was set to ALIGN_CONTENT_END," +
" content direction was reset to the original LTR after calling " +
"setText with no direction argument",
HasHorizontalAlignment.ALIGN_RIGHT,
HasAutoHorizontalAlignment.ALIGN_CONTENT_END);
label.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_JUSTIFY);
assertAlign("horizontal alignment was set to justify by " +
"setHorizontalAlignment, but is not",
HasHorizontalAlignment.ALIGN_JUSTIFY);
}
public void testSetAutoHorizontalAlignmentWithDirectionEstimator() {
Element elem = createAttachedDivElement();
// Initialize the div with a specific direction, to verify it remembers its
// original direction on turning direction estimator off.
BidiUtils.setDirectionOnElement(elem, Direction.LTR);
label = Label.wrap(elem);
label.setAutoHorizontalAlignment(
HasAutoHorizontalAlignment.ALIGN_CONTENT_END);
label.setDirectionEstimator(true);
label.setText(IW_TEXT);
assertAlign("automatic horizontal alignment was set to ALIGN_CONTENT_END," +
" and content is supposedly estimated as RTL",
HasHorizontalAlignment.ALIGN_LEFT,
HasAutoHorizontalAlignment.ALIGN_CONTENT_END);
label.setAutoHorizontalAlignment(
HasAutoHorizontalAlignment.ALIGN_CONTENT_END);
assertAlign("automatic horizontal alignment was set (again) to " +
"ALIGN_CONTENT_END, and content is estimated as RTL",
HasHorizontalAlignment.ALIGN_LEFT,
HasAutoHorizontalAlignment.ALIGN_CONTENT_END);
label.setAutoHorizontalAlignment(
HasAutoHorizontalAlignment.ALIGN_CONTENT_START);
assertAlign("automatic horizontal alignment was set to " +
"ALIGN_CONTENT_START, content is estimated as RTL",
HasHorizontalAlignment.ALIGN_RIGHT,
HasAutoHorizontalAlignment.ALIGN_CONTENT_START);
label.setDirectionEstimator(false);
assertAlign("horizontal alignment was supposed to be reset to the " +
"original ALIGN_LEFT after turning off direction estimator, and " +
"automatic horizontal alignment was to ALIGN_CONTENT_START",
HasHorizontalAlignment.ALIGN_LEFT,
HasAutoHorizontalAlignment.ALIGN_CONTENT_START);
}
/**
* Create a div and attach it to the {@link RootPanel}.
*
* @return the new div
*/
protected Element createAttachedDivElement() {
DivElement elem = Document.get().createDivElement();
RootPanel.getBodyElement().appendChild(elem);
return elem;
}
/**
* Create a span and attach it to the {@link RootPanel}.
*
* @return the new span
*/
protected Element createAttachedSpanElement() {
SpanElement elem = Document.get().createSpanElement();
RootPanel.getBodyElement().appendChild(elem);
return elem;
}
private void assertAlign(String msg, HorizontalAlignmentConstant expected) {
assertAlign(msg, expected, expected);
}
/**
* Asserts that everything is fine with the alignment.
*
* @param msg assertion message
* @param expected expected horizontal alignment
* @param expectedAuto expected auto horizontal alignment
*/
private void assertAlign(String msg, HorizontalAlignmentConstant expected,
AutoHorizontalAlignmentConstant expectedAuto) {
assertEquals(msg + " (text-align property value is incorrect)",
expected.getTextAlignString(),
label.getElement().getStyle().getTextAlign());
assertEquals(msg + " (getHorizontalAlignment return value is incorrect)",
expected, label.getHorizontalAlignment());
assertEquals(msg + " (getAutoHorizontalAlignment return value is incorrect)",
expectedAuto, label.getAutoHorizontalAlignment());
}
}