/*******************************************************************************
* Copyright (c) 2010, 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
*******************************************************************************/
package org.eclipse.e4.ui.css.swt.properties.custom;
import java.lang.reflect.Constructor;
import org.eclipse.e4.ui.css.core.engine.CSSEngine;
import org.eclipse.e4.ui.css.swt.helpers.URI;
import org.eclipse.e4.ui.css.swt.properties.AbstractCSSPropertySWTHandler;
import org.eclipse.e4.ui.internal.css.swt.CSSActivator;
import org.eclipse.swt.custom.CTabFolder;
import org.eclipse.swt.custom.CTabFolderRenderer;
import org.eclipse.swt.widgets.Control;
import org.osgi.framework.Bundle;
import org.osgi.service.log.LogService;
import org.w3c.dom.css.CSSPrimitiveValue;
import org.w3c.dom.css.CSSValue;
public class CSSPropertyTabRendererSWTHandler extends AbstractCSSPropertySWTHandler {
private boolean backwardsCompatURIsLogged = false;
@Override
protected void applyCSSProperty(Control control, String property,
CSSValue value, String pseudo, CSSEngine engine) throws Exception {
if (!(control instanceof CTabFolder)) {
return;
}
if (value.getCssValueType() == CSSValue.CSS_PRIMITIVE_VALUE) {
if (((CSSPrimitiveValue) value).getPrimitiveType() == CSSPrimitiveValue.CSS_URI) {
String rendURL = ((CSSPrimitiveValue) value).getStringValue();
// translate old-style platform:/plugin/ class specifiers into new-style bundleclass:// URIs
if (rendURL.startsWith("platform:/plugin/")) { //$NON-NLS-1$
if(!backwardsCompatURIsLogged) {
CSSActivator.getDefault().log(LogService.LOG_ERROR,
"platform-style URIs deprecated for referencing types: use bundleclass://<bundlename>/<typename>"); //$NON-NLS-1$
backwardsCompatURIsLogged = true;
}
rendURL = rendURL.replace("platform:/plugin/", "bundleclass://"); //$NON-NLS-1$ //$NON-NLS-2$
}
URI uri = URI.createURI(rendURL);
Bundle bundle = CSSActivator.getDefault().getBundleForName(uri.authority());
if (bundle == null) {
CSSActivator.getDefault().log(LogService.LOG_ERROR, "Failed to get bundle for: " + rendURL); //$NON-NLS-1$
} else {
if (uri.segmentCount() > 1) {
//TODO: handle this case?
} else {
String clazz = uri.segment(0);
try {
Class<?> targetClass = bundle.loadClass(clazz);
//check to see if the folder already has an instance of the same renderer
CTabFolderRenderer renderer = ((CTabFolder) control).getRenderer();
if (renderer != null && renderer.getClass() == targetClass) {
return;
}
Constructor<?> constructor = targetClass
.getConstructor(CTabFolder.class);
if (constructor != null) {
Object rend = constructor.newInstance(control);
if (rend != null && rend instanceof CTabFolderRenderer) {
((CTabFolder) control).setRenderer((CTabFolderRenderer)rend);
}
}
} catch (ClassNotFoundException e) {
String message = "Unable to load class '" + clazz + "' from bundle '" //$NON-NLS-1$ //$NON-NLS-2$
+ bundle.getBundleId() + "'"; //$NON-NLS-1$
CSSActivator.getDefault().log(LogService.LOG_ERROR, message);
}
}
}
} else {
((CTabFolder) control).setRenderer(null);
}
}
}
@Override
protected String retrieveCSSProperty(Control control, String property,
String pseudo, CSSEngine engine) throws Exception {
return null;
}
}