AgentSyncDataManager.java

package com.topsun.posclient.system.service;

import java.util.Stack;

import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

import com.topsun.posclient.common.POSException;
import com.topsun.posclient.system.MessageResources;
import com.topsun.posclient.system.SyncProgress;
import com.topsun.posclient.system.service.impl.local.LocalSyncItemDataServiceImpl;
import com.topsun.posclient.webservice.POSServerCaller;

public class AgentSyncDataManager implements ISyncDataListener{
	
	public Stack<ISyncDataService> syncStack  = new Stack<ISyncDataService>();
	
	public SyncProgress progress;
	
	private static AgentSyncDataManager dataManager;
	
	public static AgentSyncDataManager getInstance(){
		if(dataManager  == null){
			dataManager = new AgentSyncDataManager();
			return dataManager;
		}
		return dataManager;
	}
	
	private AgentSyncDataManager(){
		SyncDataListenerManager.getInstance().addKeyListener(this);
	}
	
	public void doSyncData(final SyncProgress progress) throws POSException{
		if(POSServerCaller.isConnected()){
			this.progress = progress;
			checkRegistrySyncType();
			int size = syncStack.size();
			int count = 0;
			progress.getInfoText().setText("");
			
			progress.getBar().setVisible(true);
			for (int i = 0; i < syncStack.size(); i++) {
				count = count + (100/size);
				syncStack.get(i).syncData(progress,count);
			}
			syncStack.clear();
			
			Display.getDefault().asyncExec(new Runnable() {
				public void run() {
					Shell shell = progress.getBar().getShell();
					progress.getBar().setSelection(100);
					MessageDialog.openInformation(shell, MessageResources.message_tips, "数据同步完成");
					progress.getBar().setSelection(0);
				}
			});

		}else{
			throw new POSException(MessageResources.message_error_notconnection);
		}
	}
	
	
	private void regsitryService(ISyncDataService dataService){
		syncStack.push(dataService);
	}
	
	public void checkRegistrySyncType(){
		regsitryService(new LocalSyncItemDataServiceImpl());
	}

	@Override
	public void onChange(final String message,int count) {
		String str  = progress.getInfoText().getText() + "\r\n";
		progress.getInfoText().setText(str + message);
		progress.getBar().setSelection(count);
	}

	@Override
	public void onChange(String message) {
		String str  = progress.getInfoText().getText() + "\r\n";
		progress.getInfoText().setText(str + message);
	}
	
}