/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

package javax.microedition.lcdui;

import java.util.Vector;

import java.util.Timer;

import java.util.TimerTask;

import org.eclipse.ercp.swt.mobile.MobileShell;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.*;

import org.eclipse.swt.widgets.*;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.graphics.*;

import org.eclipse.swt.internal.qt.*;

import com.nokia.mj.impl.rt.support.ApplicationInfo;

import org.eclipse.swt.layout.FormAttachment;

import org.eclipse.swt.layout.FormData;

import org.eclipse.swt.layout.FormLayout;

import javax.microedition.lcdui.EventDispatcher.LCDUIEvent;

final class CanvasKeypad {

    /**

     *  Constant for <code>UP</code> game action.

     */

    private static final int UP = -1;

    /**

     * Constant for <code>DOWN</code> game action.

     */

    private static final int DOWN = -2;

    /**

     * Constant for <code>LEFT</code> game action.

     */

    private static final int LEFT = -3;

    /**

     * Constant for <code>RIGHT</code> game action.

     */

    private static final int RIGHT = -4;

    /**

     * Constant for <code>FIRE</code> game action.

     */

    private static final int FIRE = -5;

    /**

     * Constant for <code>SLK</code> game action.

     */

    private static final int SLK = -6;

    /**

     * Constant for <code>SRK</code> game action.

     */

    private static final int SRK = -7;

    /**

     * Constant for general "<code>A</code>" game action.

     */

    private static final int GAME_A = 55;

    /**

     * Constant for general "<code>B</code>" game action.

     */

    private static final int GAME_B = 57;

    /**

     * Constant for general "<code>C</code>" game action.

     */

    private static final int GAME_C = 42;

    /**

     * Constant for general "<code>D</code>" game action.

     */

    private static final int GAME_D = 35;

    /**

             * Constant for general invalid key code.

             */

    private static final int INVALID_CODE = -99;

     /**

             * Constant for long keypress timeout.

             */

    private static final int KEYREPEAT_INTERVAL = 500;

    private BaseCSSEngine cssEngine;

     /**

             * keypad and game keys composites.

             */

    private Composite keypadComposite;

    private Composite gameKeysComposite;

    private Canvas canvas;

     /**

             * Listener for receiving mouse events on the keypad buttons.

             */

    private CanvasKeypadMouseListener mouseListener = new CanvasKeypadMouseListener();

     /**

             * Canvas keypad buttons.

             */

    private Button up;

    private Button down;

    private Button left;

    private Button right;

    private Button center;

    private Button skright;

    private Button skleft;

    private Button gameA;

    private Button gameB;

    private Button gameC;

    private Button gameD;

    private int keyPressed;

    private Timer timer = new Timer();

    private CanvasKeypadTimerTask timerTask;

	/**

             * Constructs a canvas kepad based on the JAD attribute

             *

             * @param canvas - canvas for which the keypad is required.

             * @param canvasComp - Composite corresponding to the canvas.

             * @param mode- the jad attribute as a string.

             */

	CanvasKeypad(Canvas canvas, Composite canvasComp, String mode) {

		this.canvas = canvas;

        cssEngine = new BaseCSSEngine(Display.getCurrent());

        //Set form layout for the shell conatining the canvas.

        canvas.getShell().setLayout(new FormLayout());

        //Create the Navigation keypad 

        createNavKeypad();

        //check if game keys are needed

        if( mode.equalsIgnoreCase("gameactions") ) {

            //create the game key pad

            createGamePad();

        }

        //Layout the game keys, navigation keys and the canvas on the shell using form layout

        FormData canvasData = new FormData();

        canvasData.right = new FormAttachment(100);

        canvasData.left = new FormAttachment(0);

        canvasData.top = new FormAttachment(0);

        canvasData.bottom = new FormAttachment(keypadComposite);

        canvasComp.setLayoutData(canvasData);

        FormData navKeyData = new FormData();

        navKeyData.right = new FormAttachment(100);

        navKeyData.left = new FormAttachment(0);

        if(gameKeysComposite != null) {

            //game keypad was created above, so layout the game keys.

            navKeyData.bottom = new FormAttachment(gameKeysComposite);

        } else {

            //game keys are not needed

            navKeyData.bottom = new FormAttachment(100);

        }

        keypadComposite.setLayoutData(navKeyData);

        if(gameKeysComposite != null) {

            //layout the game keys

            FormData gameKeyData = new FormData();

            gameKeyData.right = new FormAttachment(100);

            gameKeyData.left = new FormAttachment(0);

            gameKeyData.bottom = new FormAttachment(100);

            gameKeysComposite.setLayoutData(gameKeyData);

        }

        //layout the shell

        canvas.getShell().layout();

	}

    /**

             * creates the navigation keypad - the directional keys and selctio key.

             */

    private void createNavKeypad() {

        //Create the navigation key composite

        keypadComposite = new Composite(canvas.getShell(), SWT.NONE);

        //Create the buttons of the navigation keypad

        up = new Button(keypadComposite, SWT.PUSH);

        up.addMouseListener(mouseListener);

		left = new Button(keypadComposite, SWT.PUSH);

        left.addMouseListener(mouseListener);

		center = new Button(keypadComposite, SWT.PUSH);

        center.addMouseListener(mouseListener);

		right = new Button(keypadComposite, SWT.PUSH);

        right.addMouseListener(mouseListener);

		down = new Button(keypadComposite, SWT.PUSH);

        down.addMouseListener(mouseListener);

		//up.setStyleSheet(

        cssEngine.applyCSS(up,"QPushButton" +

                "{" +

				"background-color:blue;" +

				"border-style: outset;" +

				"border-width: 2px; " +

				"border-radius: 5px;" +

				"border-top-right-radius: 27px;"+

				"border-top-left-radius: 27px;"+

				"border-color: beige;" +

				"font: bold 14px;" +

				"min-width: 3em;" +

				"min-height: 2em;" +

				"}" +

				"QPushButton:pressed { background-color: rgb(224, 0, 0);" +

				" border-style: inset;" +

				"}");

		cssEngine.applyCSS(down,"QPushButton" +

                "{" +

				"background-color:blue;" +

				"border-style: outset;" +

				"border-width: 2px; " +

				"border-radius: 5px;" +

				"border-bottom-right-radius: 27px;"+

				"border-bottom-left-radius: 27px;"+

				"border-color: beige;" +

				"font: bold 14px;" +

				"min-width: 3em;" +

				"min-height: 2em;" +

				"}" +

				"QPushButton:pressed { background-color: rgb(224, 0, 0);" +

				" border-style: inset;" +

				"}");

		cssEngine.applyCSS(left,"QPushButton" +

                "{" +

				"background-color:blue;" +

				"border-style: outset;" +

				"border-width: 2px; " +

				"border-radius: 5px;" +

				"border-top-left-radius: 27px;"+

				"border-bottom-left-radius: 27px;"+

				"border-color: beige;" +

				"font: bold 14px;" +

				"min-height: 3em;" +

				"min-width: 2em;" +

				"}" +

				"QPushButton:pressed { background-color: rgb(224, 0, 0);" +

				" border-style: inset;" +

				"}");

		cssEngine.applyCSS(right,"QPushButton" +

                "{" +

				"background-color:blue;" +

				"border-style: outset;" +

				"border-width: 2px; " +

				"border-radius: 5px;" +

				"border-top-right-radius: 27px;"+

				"border-bottom-right-radius: 27px;"+

				"border-color: beige;" +

				"font: bold 14px;" +

				"min-height: 3em;" +

				"min-width: 2em;" +

				"}" +

				"QPushButton:pressed { background-color: rgb(224, 0, 0);" +

				" border-style: inset;" +

				"}");

		cssEngine.applyCSS(center, "QPushButton" +

                "{" +

				"background-color:blue;" +

				"border-style: outset;" +

				"border-width: 2px; " +

				"border-radius: 27px;" +

				"border-color: beige;" +

				"font: bold 14px;" +

				"min-height: 3em;" +

				"min-width: 3em;" +

				"}" +

				"QPushButton:pressed { background-color: rgb(224, 0, 0);" +

				" border-style: inset;" +

				"}");

		up.setText("^");

		center.setText("*");

		left.setText("<");

		right.setText(">");

		down.setText("v");

        //layout the navigation keys

        keypadComposite.setLayout(new FormLayout());

		FormData upFormData = new FormData();

		upFormData.top=new FormAttachment(0,10);

		upFormData.left=new FormAttachment(40);

		up.setLayoutData(upFormData);

		FormData centerFormData = new FormData();

		centerFormData.top=new FormAttachment(up,0,SWT.CENTER|SWT.TRAIL);

		centerFormData.left=new FormAttachment(40);

		center.setLayoutData(centerFormData);

		FormData downFormData = new FormData();

		downFormData.top = new FormAttachment(center,0,SWT.TRAIL);

		downFormData.left=new FormAttachment(left);

        down.setLayoutData(downFormData);

		FormData rightFormData = new FormData();

		rightFormData.top=new FormAttachment(up,0,SWT.TRAIL);

		rightFormData.left=new FormAttachment(center);

		right.setLayoutData(rightFormData);

		FormData leftFormData = new FormData();

		leftFormData.top= new FormAttachment(up);

		leftFormData.right = new FormAttachment(center);

		left.setLayoutData(leftFormData);

		keypadComposite.layout();

    }

    /**

             * creates the game keypad - the game action keys A, B, C and D.

             */

    private void createGamePad() {

        //create the game pad composite

        gameKeysComposite = new Composite(canvas.getShell(), SWT.NONE);

        gameKeysComposite.setLayout(new FormLayout());

        //Add the game buttons        

        gameA = new Button(gameKeysComposite, SWT.PUSH);

        gameA.addMouseListener(mouseListener);

		gameB = new Button(gameKeysComposite, SWT.PUSH);

        gameB.addMouseListener(mouseListener);

		gameC = new Button(gameKeysComposite, SWT.PUSH);

        gameC.addMouseListener(mouseListener);

		gameD = new Button(gameKeysComposite, SWT.PUSH);

        gameD.addMouseListener(mouseListener);

        //set the style sheet

        String gameKeysStylesheet = "QPushButton" +

                "{" +

				"background-color:blue;" +

				"border-style: outset;" +

				"border-width: 0px; " +

				"border-color: beige;" +

				"font: bold 14px;" +

				"min-height: 2em;" +

				"min-width: 5.5em;" +

				"}" +

				"QPushButton:pressed { background-color: rgb(224, 0, 0);" +

				" border-style: inset;" +

				"}";

		cssEngine.applyCSS(gameA,gameKeysStylesheet);

		cssEngine.applyCSS(gameB,gameKeysStylesheet);

		cssEngine.applyCSS(gameC,gameKeysStylesheet);

		cssEngine.applyCSS(gameD,gameKeysStylesheet);

        gameA.setText("A");

		gameB.setText("B");

		gameC.setText("C");

		gameD.setText("D");

		//layout the game Keys

        FormData gameAFormData = new FormData();

		gameAFormData.bottom=new FormAttachment(100,0);

		gameAFormData.left=new FormAttachment(0,0);

		gameA.setLayoutData(gameAFormData);

		FormData gameBFormData = new FormData();

		gameBFormData.bottom=new FormAttachment(100,0);

		gameBFormData.left=new FormAttachment(gameA,0);

		gameB.setLayoutData(gameBFormData);

		FormData gameCFormData = new FormData();

		gameCFormData.bottom=new FormAttachment(100,0);

		gameCFormData.left=new FormAttachment(gameB,0);

		gameC.setLayoutData(gameCFormData);

		FormData gameDFormData = new FormData();

		gameDFormData.bottom=new FormAttachment(100,0);

		gameDFormData.left=new FormAttachment(gameC,0);

		gameD.setLayoutData(gameDFormData);

        gameKeysComposite.layout();

    }

    /**

             * Handles orientation changes.

             */

    void handleOrientationChange(int mode) {

        //change the layout as per orientation mode

    }

    /**

             * Adds LSk and RSK keys to navigation keypad if the canvas is set to full screen mode.

             * @param mode- Indicates if the canvas is in fullscreen mode or not. True if fullscreen, False otherwise.

             */

    void setFullScreenMode(boolean mode) {

        //add the soft keys if the canvas is set to full screen mode/remove otherwise

        if(mode == true) {

            if(keypadComposite != null) {

                skright = new Button(keypadComposite, SWT.PUSH);

                skright.addMouseListener(mouseListener);

                skleft = new Button(keypadComposite, SWT.PUSH);

                skleft.addMouseListener(mouseListener);

                //Set the style sheet

        		cssEngine.applyCSS(skright,"QPushButton" +

                        "{" +

        				"background-color:blue;" +

        				"border-style: outset;" +

        				"border-width: 1px; " +

        				"border-bottom-left-radius: 22px;"+

        				"border-color: beige;" +

        				"font: bold 14px;" +

        				"min-width: 3em;" +

        				"min-height: 2em;" +

        				"}" +

        				"QPushButton:pressed { background-color: rgb(224, 0, 0);" +

        				" border-style: inset;" +

        				"}");

        		cssEngine.applyCSS(skleft,"QPushButton" +

                        "{" +

        				"background-color:blue;" +

        				"border-style: outset;" +

        				"border-width: 1px; " +

        				"border-bottom-right-radius: 22px;"+

        				"border-color: beige;" +

        				"font: bold 14px;" +

        				"min-width: 3em;" +

        				"min-height: 2em;" +

        				"}" +

        				"QPushButton:pressed { background-color: rgb(224, 0, 0);" +

        				" border-style: inset;" +

        				"}");

                skright.setText("RSK");

                skleft.setText("LSK");

                FormData sklFormData = new FormData();

        		sklFormData.top=new FormAttachment(0, 0);

        		sklFormData.left=new FormAttachment(0, 0);

        		skleft.setLayoutData(sklFormData);

        		FormData skrFormData = new FormData();

        		skrFormData.top=new FormAttachment(0, 0);

        		skrFormData.right=new FormAttachment(100, 0);

        		skright.setLayoutData(skrFormData);

                keypadComposite.layout();

            }

        }

        else {

            //LSK and RSK buttons are not needed, remove the buttons from navigation keypad

            if(skright != null)

                skright.dispose();

            if(skleft != null)

                skleft.dispose();

        }

    }

    Button getLeftSoftKey()

    {

        return skleft;

    }

    Button getRightSoftKey()

    {

        return skright;

    }

    /**

             * returns the height of the canvas keypad in pixels.

             * @return Height of the canvas keypad in pixels.

             */

    int getHeight() {

        int navKeyPadHeight = 0;

        int gameKeyPadHeight = 0;

        if(keypadComposite != null) {

            //calculate the navigation keypad height

            navKeyPadHeight = keypadComposite.computeSize(SWT.DEFAULT, SWT.DEFAULT).y;

        }