/*
 * Copyright 2005 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.drools.eclipse.flow.ruleflow.editor.editpart;

import org.drools.eclipse.DroolsEclipsePlugin;
import org.drools.eclipse.flow.common.editor.editpart.ElementEditPart;
import org.drools.eclipse.flow.common.editor.editpart.figure.AbstractElementFigure;
import org.drools.eclipse.flow.ruleflow.core.AbstractNodeWrapper;
import org.drools.eclipse.flow.ruleflow.skin.SkinManager;
import org.drools.eclipse.flow.ruleflow.skin.SkinProvider;
import org.drools.eclipse.preferences.IDroolsConstants;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.RoundedRectangle;
import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;

/**
 * EditPart for an action node.
 */
public class ActionEditPart extends ElementEditPart {

    private String SKIN =
        DroolsEclipsePlugin.getDefault().getPreferenceStore().getString(IDroolsConstants.SKIN);

    private static final Color color = new Color(Display.getCurrent(), 255, 250, 205);
    
    protected IFigure createFigure() {
        SkinProvider skinProvider = SkinManager.getInstance().getSkinProvider(SKIN);
        IFigure result = skinProvider.createActionNodeFigure();
        Rectangle constraint = getElementWrapper().getConstraint();
        if (constraint.width == -1) {
            constraint.width = result.getSize().width;
        }
        if (constraint.height == -1) {
            constraint.height = result.getSize().height;
        }
        getElementWrapper().setConstraint(constraint);
        return result;
    }
    
    public void refreshVisuals() {
        super.refreshVisuals();
        ((AbstractElementFigure) getFigure()).setColor(
            ((AbstractNodeWrapper) getElementWrapper()).getColor());
    }
    
    public static class ActionNodeFigure extends AbstractElementFigure {
        
        private static final Image ICON = ImageDescriptor.createFromURL(
            DroolsEclipsePlugin.getDefault().getBundle().getEntry("icons/action.gif")).createImage();
        
        private RoundedRectangle rectangle;
        
        protected void customizeFigure() {
            rectangle = new RoundedRectangle();
            rectangle.setCornerDimensions(new Dimension(25, 25));
            add(rectangle, 0);
            rectangle.setBackgroundColor(color);
            rectangle.setBounds(getBounds());
            setSelected(false);
            setIcon(ICON);
        }
        
        public void setBounds(Rectangle rectangle) {
            super.setBounds(rectangle);
            this.rectangle.setBounds(rectangle);
        }
        
        public void setSelected(boolean b) {
            super.setSelected(b);
            rectangle.setLineWidth(b ? 3 : 1);
            repaint();
        }
        
        public void setColor(Color newColor) {
            rectangle.setBackgroundColor(newColor == null ? color : newColor );
        }
    }
    
}
