FileSaveDialog.java

/**
* Copyright (c) 2012-2013 Nokia Corporation. All rights reserved.
* Nokia and Nokia Connecting People are registered trademarks of Nokia Corporation. 
* Oracle and Java are trademarks or registered trademarks of Oracle and/or its
* affiliates. Other product and company names mentioned herein may be trademarks
* or trade names of their respective owners. 
* See LICENSE.TXT for license information.
*/

package com.nokia.example.paint.views.components;

import com.nokia.example.paint.Main;
import com.nokia.example.paint.helpers.FileHandler;
import com.nokia.example.paint.helpers.ImageLoader;
import com.nokia.example.paint.helpers.Rectangle;
import com.nokia.example.paint.views.DrawArea;
import com.nokia.mid.ui.TextEditor;
import com.nokia.mid.ui.TextEditorListener;
import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Font;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.TextField;

/*
 * Implements the file saving dialog.
 */
public class FileSaveDialog
        implements TextEditorListener, ButtonListener {

    private TextEditor texteditor;
    private boolean isShown = false;
    protected OKButton okbutton;
    protected CancelButton cancelbutton;
    protected CharEraserButton chareraserbutton;
    private Rectangle dialogArea;
    private Image background;
    private int x = 0;
    private int y = 160;
    private boolean showEraser = false;
    private boolean quitAfterSave = false;

    public FileSaveDialog(Canvas parent) {
        ImageLoader loader = ImageLoader.getInstance();
        background = loader.loadImage("/dialog.png");
        
        try {
            // If there is a virtual keyboard, put save dialog to top.
            Class.forName("com.nokia.mid.ui.VirtualKeyboard");
            y = 0;
        }
        catch (ClassNotFoundException e) {
        
        }

        int width = parent.getWidth();
        if (width > 240) {
            x = (width - background.getWidth()) / 2;
        }
        Font font = Font.getDefaultFont();
        texteditor = TextEditor.createTextEditor("", 50, TextField.ANY, 200, font.getHeight());
        texteditor.setParent(parent);
        texteditor.setPosition(x + 20, y + 60);
        texteditor.setBackgroundColor(0xFFFFFFFF);
        texteditor.setForegroundColor(0xFF000000);
        texteditor.setConstraints(TextField.NON_PREDICTIVE);
        texteditor.setTextEditorListener(this);

        dialogArea = new Rectangle(x, y, background.getWidth(), background.getHeight());
        okbutton = new OKButton();
        okbutton.addListener(this);
        cancelbutton = new CancelButton();
        cancelbutton.addListener(this);
        okbutton.setPosition(x, y + 122);
        cancelbutton.setPosition(x + 120, y + 122);
        chareraserbutton = new CharEraserButton(texteditor);
        chareraserbutton.setPosition(x + 120, y + 122);
    }

    public void render(Graphics g) {
        if (isShown) {
            g.drawImage(background, x, y, Graphics.LEFT | Graphics.TOP);
            okbutton.render(g);
            if (!showEraser) {
                cancelbutton.render(g);
            }
            else {
                chareraserbutton.render(g);
            }
            g.setColor(0x000000);
            g.drawString("Give filename:", x + 20, y + 35, Graphics.LEFT | Graphics.BOTTOM);
        }
    }

    public void hide() {
        isShown = false;
        texteditor.setVisible(false);
    }

    public void show(boolean quitAfterSave) {
        this.quitAfterSave = quitAfterSave;
        isShown = true;
        texteditor.setVisible(true);
        texteditor.setFocus(true);
    }

    public boolean isVisible() {
        return isShown;
    }

    public void pointerPressed(int x, int y) {
        okbutton.pressed(x, y);
        if (showEraser) {
            chareraserbutton.pressed(x, y);
        }
        else {
            cancelbutton.pressed(x, y);
        }
    }

    public void pointerUnpressed(int x, int y) {
        if (!dialogArea.isPointInside(x, y)) {
            isShown = false;
            texteditor.setVisible(false);
            Main.getInstance().getDrawArea().allowDrawing(true);
        }
        else {
            okbutton.unpressed(x, y);
            if (showEraser) {
                chareraserbutton.unpressed(x, y);
            }
            else {
                cancelbutton.unpressed(x, y);
            }
        }
    }

    public void inputAction(TextEditor te, int actions) {

        if (texteditor.getContent().length() > 0) {
            showEraser = true;
        }
        else {
            showEraser = false;
        }

    }

    public void buttonPressed(Button caller) {

        if (caller.equals(okbutton)) {
            saveToFile();
        }
        //both buttons will hide the dialog
        isShown = false;
        texteditor.setVisible(false);
        Main.getInstance().getDrawArea().allowDrawing(true);
    }

    private void saveToFile() {
        DrawArea drawArea = Main.getInstance().getDrawArea();
        final Image saveable = drawArea.getDrawing();
        FileHandler.saveImageToFile(texteditor.getContent(), saveable, quitAfterSave);
        drawArea.setDrawingChanged(false);
    }
}