notemanagerworkflow.java

手机记事本程序

/*
 * Created on 2005-3-3
 *
 * Note Project
 */
package com.favo.note;

import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import com.favo.ui.BackgroundTask;
import com.favo.ui.BaseController;
import com.favo.ui.BaseView;
import com.favo.ui.ProgressGaugeUI;
import com.favo.ui.ProgressObserver;

import java.util.Vector;

/**
 * @author Favo
 * 
 * NoteListWorlflow <<Controller>>
 */
public class NoteManagerWorkflow extends BaseController {

	NoteManagerUI noteListUI;

	Vector noteTitleList;
	Vector noteIdList;

	Command YesCMD = new Command("Yes", Command.OK, 2);

	Command NoCMD = new Command("No", Command.CANCEL, 2);

	/**
	 *  
	 */
	public NoteManagerWorkflow() {
		super();
	}

	public BaseView getView() {
		return noteListUI;
	}

	public void setView(BaseView ui) {
		this.noteListUI = (NoteManagerUI)ui;
	}

	/**
	 * 显示所选则的笔记
	 * 
	 * @param index
	 *            索引
	 */
	public void showNoteDispose(final int index) {
		ProgressObserver poUI = ProgressGaugeUI.getInstance();
		BackgroundTask bkTask = new BackgroundTask(poUI, getView().getScreen(), getView().getDisplay()) {
			public boolean runTask() {
				alertScreen = new Alert(
						"Error",
						"Can't open the note",
						null, AlertType.ERROR);
				needAlert = true;
				NotepadWorkflow notepadWorkflow=new NotepadWorkflow(((Integer)(noteIdList.elementAt(index))).intValue());
				NotepadUI notepadUI=new NotepadUI(notepadWorkflow);
				notepadUI.displayScreen();
				getProgressObserver().updateProgress("ok!");
				return true;
			}

			public void cancel() {
			}
		};
		BackgroundTask.runWithProgressGauge(bkTask, "open...",
				"please wait", false, getView().getDisplay() );
	}

	/**
	 * 删除所选则的笔记
	 * 
	 * @param index
	 *            索引
	 */
	public void deleteNoteDispose(final int index) {
		Alert al = new Alert("Delete Confirm",
				"Do you want to delete the note :"
						+ (String) noteTitleList.elementAt(index), null,
				AlertType.CONFIRMATION);
		al.setTimeout(Alert.FOREVER);
		al.addCommand(YesCMD);
		al.addCommand(NoCMD);
		
		al.setCommandListener(new CommandListener() {
			public void commandAction(Command cmd, Displayable arg1) {
				if (cmd == YesCMD) {
					ProgressObserver poUI = ProgressGaugeUI.getInstance();
					BackgroundTask bkTask = new BackgroundTask(poUI, getView().getScreen(), getView().getDisplay()) {
						public boolean runTask() {
							alertScreen = new Alert(
									"Error",
									"Can't delete the note",
									null, AlertType.ERROR);
							needAlert = true;
							try {
								NoteLocator.getInstance().deleteNote(((Integer)(noteIdList.elementAt(index))).intValue());
							} catch (Exception e) {
								e.printStackTrace();
								getView().getDisplay().setCurrent(alertScreen); 
								return false;
							}
							noteTitleList.removeElementAt(index);
							noteIdList.removeElementAt(index);
							getView().displayScreen();
							return true;
						}

						public void cancel() {
						}
					};
					BackgroundTask.runWithProgressGauge(bkTask, "delete...",
							"please wait", false, getView().getDisplay() );
				} else{
					getView().displayScreen();
				}
			}
		});
		getView().getDisplay().setCurrent(al);
	}

	/**
	 * 取得新闻标题的列表,返回String数组
	 * 
	 * @return
	 */
	public String[] getNoteTitleList() {
		if (noteTitleList == null) {
			noteTitleList=new Vector();
			noteIdList=new Vector();
			try {
				NoteLocator.getInstance().getNoteInfoList(noteTitleList,noteIdList);
			} catch (Exception e) {
				e.printStackTrace();
				getView().getDisplay().setCurrent(
						new Alert("can't getNoteTitleList"));
				return new String[] {};
			}
			String[] titleArray=new String[noteTitleList.size()];
			for (int i = 0; i < noteTitleList.size(); i++) {
				titleArray[i]=(String)noteTitleList.elementAt(i);
			}
			return titleArray;
		} else {
			String[] titleArray = new String[noteTitleList.size()];
			for (int i = 0; i < titleArray.length; i++) {
				titleArray[i] = (String) noteTitleList.elementAt(i);
			}
			return titleArray;
		}
	}

	public void newNoteDispose() {
		NoteEditWorkflow noteEditWorkflow=new NoteEditWorkflow(NoteLocator.NEWNODE);
		NoteEditUI noteEditUI=new NoteEditUI(noteEditWorkflow);
		noteEditUI.displayScreen();
	}

	/**
	 * 
	 */
	public void editNoteDispose(final int index) {
		// TODO Auto-generated method stub
		ProgressObserver poUI = ProgressGaugeUI.getInstance();
		BackgroundTask bkTask = new BackgroundTask(poUI, getView().getScreen(), getView().getDisplay()) {
			public boolean runTask() {
				alertScreen = new Alert(
						"Error",
						"Can't open the note",
						null, AlertType.ERROR);
				needAlert = true;
				NoteEditWorkflow noteEditWorkflow=new NoteEditWorkflow(((Integer)(noteIdList.elementAt(index))).intValue());
				NoteEditUI noteEditUI=new NoteEditUI(noteEditWorkflow);
				noteEditUI.displayScreen();
				return true;
			}

			public void cancel() {
			}
		};
		BackgroundTask.runWithProgressGauge(bkTask, "open...",
				"please wait", false, getView().getDisplay() );
	}
}