LayerStackPanel.java

/*
 * Copyright 2013 Serdar.
 *
 * 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 de.fub.agg2graphui;

import de.fub.agg2graphui.controller.AbstractLayer;
import de.fub.agg2graphui.controller.LayerManager;
import de.fub.agg2graphui.layers.LayerEvent;
import de.fub.agg2graphui.layers.LayerListener;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.util.ArrayList;
import java.util.Collection;
import java.util.SortedSet;
import java.util.TreeSet;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import org.openide.util.WeakListeners;

/**
 *
 * @author Serdar
 */
public class LayerStackPanel extends LayerPanel implements ChangeListener, LayerListener {

    private static final long serialVersionUID = 1L;
    private transient final Object MUTEX = new Object();
    private transient LayerManager layerManager;
    private transient SortedSet<AbstractLayer<?>> layers = new TreeSet<AbstractLayer<?>>();

    /**
     * Creates new form LayerPanel
     */
    public LayerStackPanel() {
        initComponents();
    }

    public LayerStackPanel(LayerManager layerManager) {
        this();
        this.layerManager = layerManager;
        this.layerManager.addChangeListener(LayerStackPanel.this);
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 222, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 119, Short.MAX_VALUE)
        );
    }// </editor-fold>//GEN-END:initComponents
    // Variables declaration - do not modify//GEN-BEGIN:variables
    // End of variables declaration//GEN-END:variables

    public LayerManager getLayerManager() {
        return layerManager;
    }

    public Collection<AbstractLayer<?>> getLayers() {
        synchronized (MUTEX) {
            ArrayList<AbstractLayer<?>> list = new ArrayList< AbstractLayer<?>>();
            if (layers != null) {
                list.addAll(layers);
            }
            return list;
        }
    }

    public void addLayer(AbstractLayer<?> abstractLayer) {
        synchronized (getTreeLock()) {
            getLayers().add(abstractLayer);
            stateChanged(new ChangeEvent(this));
        }
    }

    public void removeLayer(AbstractLayer<?> layer) {
        synchronized (getTreeLock()) {
            getLayers().remove(layer);
            stateChanged(new ChangeEvent(this));
        }
    }

    @Override
    protected void printComponent(Graphics g) {
        super.printComponent(g);
        synchronized (getTreeLock()) {
            for (AbstractLayer<?> layer : getLayers()) {
                layer.paintLayer(g, new Rectangle(getSize()));
            }
        }
    }

    @Override
    public void stateChanged(ChangeEvent e) {
        synchronized (getTreeLock()) {
            getLayers().clear();
            for (AbstractLayer<?> layer : layerManager.getLayers()) {
                getLayers().add(layer);
                layer.addLayerListener(WeakListeners.create(LayerListener.class, LayerStackPanel.this, layer));
            }
            repaint();
        }
    }

    @Override
    public void requestRender(LayerEvent event) {
        repaint();
    }

    /**
     * @param layers the layers to set
     */
    protected void setLayers(SortedSet<AbstractLayer<?>> layers) {
        this.layers = layers;
    }
}