org.akrogen.tkui.css.swt.properties.css2.CSSPropertyBackgroundSWTHandler.java Source code

Introduction

Here is the source code for org.akrogen.tkui.css.swt.properties.css2.CSSPropertyBackgroundSWTHandler.java

Source

/*******************************************************************************
 * Copyright (c) 2008, Original authors.
 * 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:
 *     Angelo ZERR <angelo.zerr@gmail.com>
 *******************************************************************************/
package org.akrogen.tkui.css.swt.properties.css2;

import org.akrogen.tkui.css.core.dom.properties.Gradient;
import org.akrogen.tkui.css.core.dom.properties.css2.AbstractCSSPropertyBackgroundHandler;
import org.akrogen.tkui.css.core.dom.properties.css2.ICSSPropertyBackgroundHandler;
import org.akrogen.tkui.css.core.engine.CSSEngine;
import org.akrogen.tkui.css.swt.helpers.SWTElementHelpers;
import org.akrogen.tkui.css.swt.properties.GradientBackgroundListener;
//import org.apache.commons.logging.Log;
//import org.apache.commons.logging.LogFactory;
import org.eclipse.swt.custom.CTabFolder;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Control;
import org.w3c.dom.css.CSSValue;

public class CSSPropertyBackgroundSWTHandler extends AbstractCSSPropertyBackgroundHandler {

    //   private static Log logger = LogFactory
    //         .getLog(CSSPropertyBackgroundSWTHandler.class);

    public final static ICSSPropertyBackgroundHandler INSTANCE = new CSSPropertyBackgroundSWTHandler();

    @Override
    public boolean applyCSSProperty(Object element, String property, CSSValue value, String pseudo,
            CSSEngine engine) throws Exception {
        Control control = SWTElementHelpers.getControl(element);
        if (control != null) {
            super.applyCSSProperty(control, property, value, pseudo, engine);
            return true;
        }
        return false;

    }

    @Override
    public String retrieveCSSProperty(Object element, String property, CSSEngine engine) throws Exception {
        Control control = SWTElementHelpers.getControl(element);
        if (control != null) {
            return super.retrieveCSSProperty(control, property, engine);
        }
        return null;
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.akrogen.tkui.core.css.dom.properties.css2.AbstractCSSPropertyBackgroundHandler#applyCSSPropertyBackgroundColor(java.lang.Object,
     *      org.w3c.dom.css.CSSValue, java.lang.String,
     *      org.akrogen.tkui.core.css.engine.CSSEngine)
     */
    @Override
    public void applyCSSPropertyBackgroundColor(Object element, CSSValue value, String pseudo, CSSEngine engine)
            throws Exception {
        Control control = (Control) element;
        if (value.getCssValueType() == CSSValue.CSS_PRIMITIVE_VALUE) {
            Color newColor = (Color) engine.convert(value, Color.class, control.getDisplay());
            if (control instanceof CTabFolder && "selected".equals(pseudo)) {
                ((CTabFolder) control).setSelectionBackground(newColor);
            } else {
                control.setBackground(newColor);
            }
        } else if (value.getCssValueType() == CSSValue.CSS_VALUE_LIST) {
            Gradient grad = (Gradient) engine.convert(value, Gradient.class, control.getDisplay());
            GradientBackgroundListener.handle(control, grad);
        }
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.akrogen.tkui.core.css.dom.properties.css2.AbstractCSSPropertyBackgroundHandler#applyCSSPropertyBackgroundImage(java.lang.Object,
     *      org.w3c.dom.css.CSSValue, java.lang.String,
     *      org.akrogen.tkui.core.css.engine.CSSEngine)
     */
    @Override
    public void applyCSSPropertyBackgroundImage(Object element, CSSValue value, String pseudo, CSSEngine engine)
            throws Exception {
        Control control = (Control) element;
        Image image = (Image) engine.convert(value, Image.class, control.getDisplay());
        if (control instanceof CTabFolder && "selected".equals(pseudo)) {
            ((CTabFolder) control).setSelectionBackground(image);
        } else if (control instanceof Button) {
            Button button = ((Button) control);
            // Image oldImage = button.getImage();
            // if (oldImage != null)
            // oldImage.dispose();
            button.setImage(image);
        } else {
            try {
                control.setBackgroundImage(image);
            } catch (Throwable e) {
                e.printStackTrace();
                //            if (logger.isWarnEnabled())
                //               logger
                //                     .warn("Impossible to manage backround-image, This SWT version doesn't support control.setBackgroundImage(Image image) Method");
            }
        }
    }

    public String retrieveCSSPropertyBackgroundAttachment(Object widget, CSSEngine engine) throws Exception {
        return null;
    }

    public String retrieveCSSPropertyBackgroundColor(Object element, CSSEngine engine) throws Exception {
        Control control = (Control) element;
        Color color = control.getBackground();
        return engine.convert(color, Color.class, null);
    }

    public String retrieveCSSPropertyBackgroundImage(Object widget, CSSEngine engine) throws Exception {
        // TODO : manage path of Image.
        return "none";
    }

    public String retrieveCSSPropertyBackgroundPosition(Object widget, CSSEngine engine) throws Exception {
        return null;
    }

    public String retrieveCSSPropertyBackgroundRepeat(Object widget, CSSEngine engine) throws Exception {
        return null;
    }
}