package com.sunking.tp.swing;

import java.awt.*;
import javax.swing.*;

import com.sunking.tp.framework.*;
import com.sunking.tp.tool.*;
import com.sunking.tp.util.*;

/**
 *
 * <p>Title: </p>
 * <p>Description: 默認右鍵菜單生成器</p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: </p>
 * @author <a href="mailto:sunkingxie@hotmail.com">SunKing</a>
 * @version 1.0
 */
public class JTPDefaultMenuFactory implements JTPMenuFactory {
    /**
     *單件模式的唯一實例
     */
    private static JTPMenuFactory staticInstance;
    private JTPDefaultMenuFactory() {}

    public static JTPMenuFactory getDefault() {
        if (staticInstance == null) {
            staticInstance = new JTPDefaultMenuFactory();
        }
        return staticInstance;
    }

    public JPopupMenu getPopup(JTPComponent c[]) {
        if (c == null || c.length == 0) {
            return null;
        }
        Desktop desk = getDesktop( (Component) c[0]);
        JPopupMenu popup = new JPopupMenu();
        createDefaultMenuItem(popup, desk);
        createSelfMenuItem(popup, desk, c);
        return popup;
    }

    /**
     *建立該組件自己的菜單
     */
    private void createSelfMenuItem(JPopupMenu popup, Desktop desktopPane, JTPComponent c[]) {
        String className = null;
        for (int index = 0; index < c.length; index++) {
            if (index == 0) {
                className = c[0].getClass().getName();
            } else {
                if (!c[index].getClass().getName().equals(className)) {
                    return;
                }
            }
        }
        if (c[0] instanceof JTPImage) {
            AbstractAction changeImageAction = new ToolAction(
                desktopPane, new ChangeImageTool(desktopPane, JTPUtil.getImage("image.gif")));
            changeImageAction.putValue(Action.NAME, JTPUtil.getString("MENU_CHANGEIMAGE"));
            changeImageAction.putValue(Action.MNEMONIC_KEY, new Integer('I'));
            popup.addSeparator();
            popup.add(changeImageAction);
        } else {
            AbstractAction changeTextAction = new ToolAction(
                desktopPane,
                new ChangeTextTool(desktopPane, JTPUtil.getImage("changetext.gif")));
            changeTextAction.putValue(Action.NAME, JTPUtil.getString("MENU_CHANGETEXT"));
            changeTextAction.putValue(Action.MNEMONIC_KEY, new Integer('T'));
            popup.addSeparator();
            popup.add(changeTextAction);
        }

    }

    /**
     *建立組件通用菜單
     */
    private void createDefaultMenuItem(JPopupMenu popup, Desktop desktopPane) {
        AbstractAction deleteAction = new ToolAction(
            desktopPane,
            new DeleteTool(desktopPane, JTPUtil.getImage("delete.gif")));
        deleteAction.putValue(Action.NAME, JTPUtil.getString("MENU_DELETE"));
        deleteAction.putValue(Action.MNEMONIC_KEY, new Integer('D'));
        deleteAction.putValue(Action.ACCELERATOR_KEY, KeyStroke.getKeyStroke("DEL"));

        AbstractAction copyAction = new ToolAction(
            desktopPane, new CopyTool(desktopPane, JTPUtil.getImage("copy.gif")));
        copyAction.putValue(Action.NAME, JTPUtil.getString("MENU_COPY"));
        copyAction.putValue(Action.MNEMONIC_KEY, new Integer('C'));
        copyAction.putValue(Action.ACCELERATOR_KEY, KeyStroke.getKeyStroke("ctrl C"));

        AbstractAction pasteAction = new ToolAction(
            desktopPane,
            new PasteTool(desktopPane, JTPUtil.getImage("paste.gif")));
        pasteAction.putValue(Action.NAME, JTPUtil.getString("MENU_PASTE"));
        pasteAction.putValue(Action.MNEMONIC_KEY, new Integer('P'));
        pasteAction.putValue(Action.ACCELERATOR_KEY, KeyStroke.getKeyStroke("ctrl V"));

        popup.add(copyAction);
        popup.add(pasteAction);
        popup.add(deleteAction);
    }

    Desktop getDesktop(Component c) {
        if (c instanceof Desktop)
            return (Desktop) c;
        c = c.getParent();
        if (c == null)
            return null;
        return getDesktop(c);
    }
}