/*******************************************************************************
* Copyright (c) 2017 Fabian Pfaff 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:
* Fabian Pfaff <fabian.pfaff@vogella.com> - initial API and implementation
*******************************************************************************/
package org.eclipse.e4.ui.css.swt.properties.custom;
import org.eclipse.e4.ui.css.core.dom.ElementAdapter;
import org.eclipse.e4.ui.css.core.dom.properties.ICSSPropertyHandler;
import org.eclipse.e4.ui.css.core.engine.CSSEngine;
import org.eclipse.e4.ui.css.swt.dom.IHeaderCustomizationElement;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.widgets.Widget;
import org.w3c.dom.css.CSSValue;
/**
* A handler which allows the styling of IHeaderCustomizationElements.
*/
public class CSSPropertyHeaderHandler implements ICSSPropertyHandler {
private static final String SWT_HEADER_COLOR = "swt-header-color"; //$NON-NLS-1$
private static final String SWT_HEADER_BACKGROUND_COLOR = "swt-header-background-color"; //$NON-NLS-1$
@Override
public boolean applyCSSProperty(Object element, String property, CSSValue value, String pseudo, CSSEngine engine)
throws Exception {
if (!(element instanceof IHeaderCustomizationElement && element instanceof ElementAdapter)) {
return false;
}
IHeaderCustomizationElement headerCustomizationElement = (IHeaderCustomizationElement) element;
ElementAdapter elementAdapter = (ElementAdapter) element;
Object nativeWidget = elementAdapter.getNativeWidget();
if (!(nativeWidget instanceof Widget)) {
return false;
}
Widget widget = (Widget) nativeWidget;
return setHeaderColor(property, value, engine, headerCustomizationElement, widget);
}
private boolean setHeaderColor(String property, CSSValue value, CSSEngine engine,
IHeaderCustomizationElement headerCustomizationElement, Widget widget) throws Exception {
if (SWT_HEADER_COLOR.equals(property)
&& value.getCssValueType() == CSSValue.CSS_PRIMITIVE_VALUE) {
Color newColor = (Color) engine.convert(value, Color.class, widget.getDisplay());
headerCustomizationElement.setHeaderColor(newColor);
return true;
} else if (SWT_HEADER_BACKGROUND_COLOR.equals(property)
&& value.getCssValueType() == CSSValue.CSS_PRIMITIVE_VALUE) {
Color newColor = (Color) engine.convert(value, Color.class, widget.getDisplay());
headerCustomizationElement.setHeaderBackgroundColor(newColor);
return true;
}
return false;
}
@Override
public String retrieveCSSProperty(Object element, String property, String pseudo, CSSEngine engine)
throws Exception {
return null;
}
}