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/*
 * Copyright 2012-2016 Michael Hoffer . All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 *    1. Redistributions of source code must retain the above copyright notice, this list of
 *       conditions and the following disclaimer.
 *
 *    2. Redistributions in binary form must reproduce the above copyright notice, this list
 *       of conditions and the following disclaimer in the documentation and/or other materials
 *       provided with the distribution.
 *
 * Please cite the following publication(s):
 *
 * M. Hoffer, C.Poliwoda, G.Wittum. Visual Reflection Library -
 * A Framework for Declarative GUI Programming on the Java Platform.
 * Computing and Visualization in Science, 2011, in press.
 *
 * THIS SOFTWARE IS PROVIDED BY Michael Hoffer  "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Michael Hoffer  OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * The views and conclusions contained in the software and documentation are those of the
 * authors and should not be interpreted as representing official policies, either expressed
 * or implied, of Michael Hoffer .
 */
package jfxtras.scene.control.window;

import java.util.ArrayList;
import java.util.List;

import javafx.collections.FXCollections;
import javafx.collections.ObservableList;

/**
 * Window utility class.
 *
 * This class contains several methods for managing window nodes (selection
 * etc.).
 *
 * @author Michael Hoffer <[email protected]>
 */
public class WindowUtil {
    
    private static Clipboard clipboard;

    /**
     * Returns the default clipboard (used for window selection etc.).
     *
     * @return the default clipboard
     *
     * @see
     * jfxtras.labs.util.event.MouseControlUtil#addSelectionRectangleGesture(javafx.scene.Parent,
     * javafx.scene.shape.Rectangle)
     * @see jfxtras.labs.scene.control.window.SelectableNode
     */
    public static Clipboard getDefaultClipboard() {
        
        if (clipboard == null) {
            clipboard = new ClipboardImpl();
        }
        
        return clipboard;
    }
}

/**
 * Default clipboard implementation.
 *
 * @author Michael Hoffer <[email protected]>
 */
class ClipboardImpl implements Clipboard {
    
    private final ObservableList items
            = FXCollections.observableArrayList();
    
    @Override
    public boolean select(SelectableNode n, boolean selected) {
        if (n.requestSelection(selected)) {
            if (selected) {
                if (!items.contains(n)) {
                    items.add(n);
                }
            } else {
                items.remove(n);
            }
            
            return true;
        } else {
            return false;
        }
    }
    
    @Override
    public ObservableList getSelectedItems() {
        return items;
    }
    
    @Override
    public void deselectAll() {
        
        List unselectList = new ArrayList<>();
        unselectList.addAll(items);
        
        for (SelectableNode sN : unselectList) {
            select(sN, false);
        }
    }
}