All for Cell Phones: Sony Ericsson/Sony-Ericsson 2004.iso/Java/JTask/JTask.jar/JTask.class

Java Class File | 2002-01-06 | 5.9 KB | 226 lines

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.List;
import javax.microedition.lcdui.Screen;
import javax.microedition.lcdui.StringItem;
import javax.microedition.lcdui.TextField;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
import javax.microedition.rms.RecordComparator;
import javax.microedition.rms.RecordEnumeration;
import javax.microedition.rms.RecordFilter;
import javax.microedition.rms.RecordStore;

public class JTask extends MIDlet implements CommandListener {
   private Display display = Display.getDisplay(this);
   private Command cmdEXIT = new Command("Exit", 7, 1);
   private Command cmdADD = new Command("Add", 1, 1);
   private Command cmdDEL = new Command("Del", 1, 1);
   private Command cmdABT = new Command("About", 1, 1);
   private Command cmdOK = new Command("OK", 4, 1);
   private Command cmdBACK = new Command("Back", 2, 1);
   private Form mainScr = null;
   private TextField taskEntry;
   private Form taskForm;
   private Displayable prev;
   private List taskList = null;
   private int[] recID;
   private int maxEntry;
   private String taskString;
   // $FF: renamed from: rs javax.microedition.rms.RecordStore
   private RecordStore field_0;

   public JTask() {
      try {
         this.field_0 = RecordStore.openRecordStore("JTaskList", true);
      } catch (Exception var2) {
         this.field_0 = null;
      }

   }

   protected void startApp() throws MIDletStateChangeException {
      if (this.field_0 != null) {
         this.genScr();
      }

   }

   protected void pauseApp() {
   }

   protected void destroyApp(boolean var1) {
   }

   public void commandAction(Command var1, Displayable var2) {
      if (var1 == this.cmdEXIT) {
         this.exitMIDlet();
      } else if (var1 == this.cmdADD) {
         this.getTask();
      } else if (var1 == this.cmdOK && var2 == this.taskForm) {
         if (this.taskEntry.size() > 0) {
            this.addTask();
         }
      } else if (var1 == this.cmdBACK && var2 == this.taskForm) {
         this.display.setCurrent(this.prev);
      } else if (var1 == this.cmdDEL && var2 == this.taskList) {
         this.delTask();
      } else if (var1 == this.cmdABT && var2 == this.taskList) {
         this.showAbout();
      }

   }

   protected Screen genMainScr() {
      this.mainScr = new Form("JTask");
      this.mainScr.addCommand(this.cmdEXIT);
      this.mainScr.addCommand(this.cmdADD);
      this.mainScr.setCommandListener(this);
      StringItem var1 = new StringItem("", "Empty Task List");
      this.mainScr.append(var1);
      return this.mainScr;
   }

   protected Screen genListScr() {
      int var1 = 0;

      try {
         this.maxEntry = this.field_0.getNumRecords();
         this.recID = new int[this.maxEntry + 20];
         RecordEnumeration var2 = this.field_0.enumerateRecords((RecordFilter)null, (RecordComparator)null, true);
         this.taskList = new List("JTasks", 2);

         while(var2.hasNextElement()) {
            byte[] var3 = var2.nextRecord();
            this.taskString = this.fromBytes(var3);
            this.taskList.append(this.taskString, (Image)null);
         }

         this.taskList.addCommand(this.cmdEXIT);
         this.taskList.addCommand(this.cmdADD);
         this.taskList.addCommand(this.cmdDEL);
         this.taskList.addCommand(this.cmdABT);
         this.taskList.setCommandListener(this);

         for(var2 = this.field_0.enumerateRecords((RecordFilter)null, (RecordComparator)null, true); var2.hasNextElement(); this.recID[var1++] = var2.nextRecordId()) {
         }

         var2.destroy();
      } catch (Exception var4) {
      }

      return this.taskList;
   }

   protected Screen genScr() {
      Screen var1 = null;

      try {
         if (this.field_0.getNumRecords() == 0) {
            var1 = this.genMainScr();
         } else {
            var1 = this.genListScr();
         }
      } catch (Exception var3) {
      }

      this.display.setCurrent(var1);
      return var1;
   }

   protected void exitMIDlet() {
      try {
         this.field_0.closeRecordStore();
      } catch (Exception var2) {
      }

      this.destroyApp(true);
      ((MIDlet)this).notifyDestroyed();
   }

   protected void getTask() {
      this.taskForm = new Form("Enter Task");
      this.taskEntry = new TextField("New Task", "", 30, 0);
      this.taskForm.append(this.taskEntry);
      this.taskForm.addCommand(this.cmdOK);
      this.taskForm.addCommand(this.cmdBACK);
      this.taskForm.setCommandListener(this);
      this.prev = this.display.getCurrent();
      this.display.setCurrent(this.taskForm);
   }

   protected void addTask() {
      try {
         String var1 = this.taskEntry.getString();
         byte[] var2 = this.toBytes(var1);
         this.field_0.addRecord(var2, 0, var2.length);
      } catch (Exception var3) {
      }

      this.genScr();
   }

   protected void delTask() {
      boolean[] var1 = new boolean[this.maxEntry];
      this.taskList.getSelectedFlags(var1);

      for(int var2 = 0; var2 < this.maxEntry; ++var2) {
         if (var1[var2]) {
            try {
               this.field_0.deleteRecord(this.recID[var2]);
            } catch (Exception var4) {
            }
         }
      }

      this.genScr();
   }

   protected void showAbout() {
      Alert var1 = new Alert("About");
      var1.setString("   JTask v. 1.0a\n   ===========\nManage a simple list of tasks.\n\nAuthor:\nRommel P. Feria\[e-mail]\n\nGawang Pinoy! Mabuhay!\nCopyright(c)2002.");
      var1.setTimeout(-2);
      var1.setType(AlertType.INFO);
      this.display.setCurrent(var1, this.taskList);
   }

   protected String fromBytes(byte[] var1) {
      String var2 = null;

      try {
         DataInputStream var3 = new DataInputStream(new ByteArrayInputStream(var1));
         var2 = var3.readUTF();
         var3.close();
      } catch (Exception var4) {
      }

      return var2;
   }

   protected byte[] toBytes(String var1) {
      byte[] var2 = null;

      try {
         ByteArrayOutputStream var3 = new ByteArrayOutputStream();
         DataOutputStream var4 = new DataOutputStream(var3);
         var4.writeUTF(var1);
         var2 = var3.toByteArray();
         var3.close();
         var4.close();
      } catch (Exception var5) {
      }

      return var2;
   }
}