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/*******************************************************************************
* Copyright (c) 2008, 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.fail;
import java.io.IOException;
import java.io.StringReader;
import org.eclipse.e4.ui.css.core.engine.CSSEngine;
import org.eclipse.e4.ui.css.core.engine.CSSErrorHandler;
import org.eclipse.e4.ui.css.swt.engine.CSSSWTEngineImpl;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Widget;
import org.junit.After;
import org.junit.Before;
public class CSSSWTTestCase {
protected Display display;
protected CSSEngine engine;
public CSSEngine createEngine(String styleSheet, Display display) {
engine = new CSSSWTEngineImpl(display);
engine.setErrorHandler(new CSSErrorHandler() {
@Override
public void error(Exception e) {
fail(e.getMessage());
}
});
try {
engine.parseStyleSheet(new StringReader(styleSheet));
} catch (IOException e) {
fail(e.getMessage());
}
return engine;
}
/**
* Parse and apply the style sheet, forgetting previous style sheets applied.
* This is helpful for reusing the same engine but writing independent tests.
* Styles are applied down the widget hierarchy.
* @param engine the engine
* @param widget the start of the widget hierarchy
* @param styleSheet a string style sheet
*/
public void clearAndApply(CSSEngine engine, Widget widget, String styleSheet) {
//Forget all previous styles
engine.reset();
if (styleSheet != null) {
try {
engine.parseStyleSheet(new StringReader(styleSheet));
} catch (IOException e) {
fail(e.getMessage());
}
}
engine.applyStyles(widget, true, true);
}
@Before
public void setUp() {
display = Display.getDefault();
}
@After
public void tearDown() {
display = Display.getDefault();
if (!display.isDisposed()) {
for (Shell shell : display.getShells()) {
shell.dispose();
}
display.dispose();
}
}
protected Label createTestLabel(String styleSheet) {
engine = createEngine(styleSheet, display);
// Create widgets
Shell shell = new Shell(display, SWT.SHELL_TRIM);
FillLayout layout = new FillLayout();
shell.setLayout(layout);
Composite panel = new Composite(shell, SWT.NONE);
panel.setLayout(new FillLayout());
Label labelToTest = new Label(panel, SWT.NONE);
labelToTest.setText("Some label text");
// Apply styles
engine.applyStyles(labelToTest, true);
shell.pack();
return labelToTest;
}
}
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