/*
* Filename: MainMenu.java
* - contains definition of the class MainMenu. It is a List serving as the Main Menu of Image Album
* itself is the CommandListener which receives command from the List and invoke the corresponding action.
*
* Application Name: Image Album Demo
* Version: 2.0
* Release Date: 27th September, 2002
* Author: Edmund Wong, Application Engineer, Metrowerks Hong Kong
*
*
* (c) Copyright. 2002. Metrowerks Corp. ALL RIGHTS RESERVED.
* This code is provided "AS IS" without warranty of any kind and subject to Metrowerks Sample Application
* End User License Agreement. NO EXTERNAL DISTRIBUTION OR COMMERCIALIZATION OF THE SOFTWARE IS PERMITTED
* EXCEPT BY WRITTEN AGREEMENT OF METROWERKS."
*/
import javax.microedition.lcdui.*;
import java.util.*;
public class MainMenu extends List implements CommandListener{
/**
* Create screen items for Main Menu
*/
// create ticker for showing in Main Menu
Ticker tickerMainMenu= new Ticker("Select View Album for viewing images at your own control! Select Slide Show for viewing images with automatic image change!");
// create commands for Main Menu
Command selectCommand = new Command("Select",Command.ITEM,0);
Command quitCommand = new Command("Quit",Command.EXIT,0);
ImageAlbum imageAlbumReference; // reference for main object ImageAlbum
Form ImageDBStatusCheckForm; // create Form for showing Image Database Status Information
/**
* Constructor for MainMenu
*/
public MainMenu(ImageAlbum imageAlbumReference) {
super("Image Album V2.0. Select your choice!", List.EXCLUSIVE); //Create a List as main menu
this.imageAlbumReference = imageAlbumReference;
/**
* Appending items to Select List (Main Menu)
*/
setCommandListener(this);
append("View Album", null);
append("Slide Show", null);
append("Options", null);
append("Download from specified URL", null);
append("Image Database Status Information", null);
append("Help",null);
append("About Image Album",null);
/**
* Add command and ticker for the Main Menu
*/
addCommand(selectCommand);
addCommand(quitCommand);
setTicker(tickerMainMenu);
}
/**
* Implementation for CommandListener
*/
public void commandAction(Command c, Displayable s) {
/**
* Initiate the correspoding action according to user's choice in main menu
*/
if (c==selectCommand) {
switch (this.getSelectedIndex())
{
case 0: // start viewing album manually
ImageAlbum.slideShowing = false;
//initialize image reference on Canvas
imageAlbumReference.slideShowCanvas.img = (Image)imageAlbumReference.imageVector.elementAt(0);
ImageAlbum.myDisplay.setCurrent(imageAlbumReference.viewAlbumCanvas);
ImageAlbum.imageShowCounter = -1; // set to -1, will be increased to 0 in changeNextPhoto
// function for showing the first image
imageAlbumReference.changeNextPhoto(imageAlbumReference.viewAlbumCanvas);
break;
case 1: // start viewing album in slide show mode
ImageAlbum.slideShowing = true;
ImageAlbum.imageShowCounter = -1; // set to -1, will be increased to 0 in changeNextPhoto
// function for showing the first image
//initialize image reference on Canvas
imageAlbumReference.slideShowCanvas.img = (Image)imageAlbumReference.imageVector.elementAt(0);
ImageAlbum.myDisplay.setCurrent(imageAlbumReference.slideShowCanvas);
imageAlbumReference.slideShow(imageAlbumReference.slideShowCanvas,0);
break;
case 2: // show optionsInputForm for user to enter options
ImageAlbum.myDisplay.setCurrent(imageAlbumReference.optionsInputForm);
break;
case 3: // show downloadFromURLForm for user to enter URL and download Image from that specified URL
ImageAlbum.myDisplay.setCurrent(imageAlbumReference.downloadFromURLForm);
break;
case 4: // show ImageDBStatusCheckForm for user to check the RecordStore Status information
ImageDBStatusCheckForm = new Form("Image Database Status:");
ImageDBStatusCheckForm.addCommand(ImageAlbum.mainMenuCommand);
ImageDBStatusCheckForm.setCommandListener(this);
ImageDBStatusCheckForm.append("- Total no. of Images in Album: \n" + ImageAlbum.totalImageNumber + "\n");
ImageDBStatusCheckForm.append("- No. of Images from installed JAR package: \n" + ImageAlbum.imageNumberInJAR + "\n");
ImageDBStatusCheckForm.append("- No. of Images saved in Record Store of phone: \n" + ImageAlbum.imageNumberInRecordStore + "\n");
// open the RecordStore "ImageDB"
imageAlbumReference.rmsOperations.openRecordStore("ImageDB", false); // false -> no enumerate needs
// get size of RecordStore used for storing Images and append to the ImageDBStatusCheckForm
ImageDBStatusCheckForm.append("- Memory used for storing Images in Record Store:\n " + imageAlbumReference.rmsOperations.getSize() + " Bytes \n");
imageAlbumReference.rmsOperations.closeRecordStore(); // close the "ImageDB" RecordStore
// open the RecordStore "DescriptionsDB"
imageAlbumReference.rmsOperations.openRecordStore("DescriptionsDB", false); // false -> no enumerate needs
// get size of RecordStore used for storing descriptions and append to the ImageDBStatusCheckForm
ImageDBStatusCheckForm.append("- Memory used for storing descriptions:\n " + imageAlbumReference.rmsOperations.getSize() + " Bytes \n");
// get size of RecordStore available and append to the ImageDBStatusCheckForm
ImageDBStatusCheckForm.append("- Memory available in Record Store:\n " + imageAlbumReference.rmsOperations.getSizeAvailable() + " Bytes \n");
imageAlbumReference.rmsOperations.closeRecordStore(); // close "DescriptionsDB" RecordStore
ImageAlbum.myDisplay.setCurrent(ImageDBStatusCheckForm);
break;
case 5: // show Help Info when chosen in Main Menu
HelpDisplayForm helpDisplayForm = new HelpDisplayForm(imageAlbumReference);
ImageAlbum.myDisplay.setCurrent(helpDisplayForm);
helpDisplayForm = null;
break;
case 6: // show About Info when chosen in Main Menu
Alert aboutAlert = new Alert("About","Image Album Demo \nVersion 2.0 \nSeptember 2002 \n\nBy Edmund Wong \nMetrowerks Corp.", null, AlertType.INFO);
aboutAlert.setTimeout(Alert.FOREVER); // Set display time for About Alert message
ImageAlbum.myDisplay.setCurrent(aboutAlert, s);
aboutAlert = null;
break;
}
}
/**
* Quit this J2ME application when quitCommand is chosen from main menu
*/
if (c==quitCommand) {
imageAlbumReference.notifyDestroyed();
}
/**
* For ImageDBStatusCheckForm, for user to return to Main Menu after viewing RecordStore status info
*/
if (c == ImageAlbum.mainMenuCommand) {
ImageAlbum.myDisplay.setCurrent(this);
ImageDBStatusCheckForm = null;
}
}
}
