/*******************************************************************************
* Copyright (c) 2013, 2014 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Thibault Le Ouay <thibaultleouay@gmail.com> - Bug 443094
*******************************************************************************/
package org.eclipse.e4.ui.tests.css.swt;
import static org.junit.Assert.assertEquals;
import org.eclipse.e4.ui.css.swt.dom.WidgetElement;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Shell;
import org.junit.Test;
public class DescendentTest extends CSSSWTTestCase {
static final RGB RED = new RGB(255, 0, 0);
static final RGB GREEN = new RGB(0, 255, 0);
static final RGB BLUE = new RGB(0, 0, 255);
static final RGB WHITE = new RGB(255, 255, 255);
static final RGB BLACK = new RGB(0, 0, 0);
protected Button[] createTestWidgets(String styleSheet) {
engine = createEngine(styleSheet, display);
// Create widgets
Shell shell = new Shell(display, SWT.SHELL_TRIM);
FillLayout layout = new FillLayout();
shell.setLayout(layout);
Composite panelA = new Composite(shell, SWT.NONE);
panelA.setLayout(new FillLayout());
Composite panelB = new Composite(shell, SWT.NONE);
panelB.setLayout(new FillLayout());
Button buttonA = new Button(panelA, SWT.NONE);
Button buttonB = new Button(panelB, SWT.NONE);
Button buttonC = new Button(shell, SWT.NONE);
engine.applyStyles(shell, true);
return new Button[] {buttonA, buttonB, buttonC};
}
@Test
public void testDescendentSpecificity() {
Button[] buttons = createTestWidgets(
"Composite.special Button { background: #FF0000}\n" + //specificity a=1 b=0 c=1 = 101
"Composite Button { background: #00FF00}\n" + //specificity a=0 b=0 c=2 = 002
"Composite.extraordinary Button { background: #FFFFFF}\n" + //specificity a=0 b=0 c=2 = 002
"#parent Button { background: #000000}\n" + //specificity a=0 b=0 c=2 = 002
"Button { background: #0000FF}"); //specificity a=0 b=0 c=1 = 001
Button buttonA = buttons[0];
Button buttonB = buttons[1];
Button buttonC = buttons[2];
WidgetElement.setCSSClass(buttonA.getParent(), "special");
engine.applyStyles(buttonA.getShell(), true);
assertEquals(RED, buttonA.getBackground().getRGB());
assertEquals(GREEN, buttonB.getBackground().getRGB());
assertEquals(BLUE, buttonC.getBackground().getRGB());
WidgetElement.setCSSClass(buttonA.getParent(), "extraordinary");
WidgetElement.setID(buttonB.getParent(), "parent");
engine.applyStyles(buttonA.getShell(), true);
assertEquals(WHITE, buttonA.getBackground().getRGB());
assertEquals(BLACK, buttonB.getBackground().getRGB());
}
}