Progressmeter change while a process is running

asked 2012-09-27 14:56:46 +0800

Neus
1415 ● 14

Hi,
I have a long process that goes over a list. To show the user how many items these process have checked I use a progress meter.
Now, it shows it to the user when all items have been scanned.
I want to change the progressmeter item by item. So, one item is scanned -> progressmeter move forward. Other item is scanned -> progressmeter move forward...

How can I do this?

Thank you!

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answered 2012-10-09 08:41:50 +0800

vincentjian
2245 ● 6

updated 2012-10-09 08:49:18 +0800

Hi Neus,

You can modify the sample from zkdemo.
Here is the demo I modified: http://zkfiddle.org/sample/2ue3vcb/6-progressmeter-sample

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answered 2012-10-09 10:22:30 +0800

Neus
1415 ● 14

But in the example you provide, the progressmeter increase every 1 second, on the timer tick, isn't it?In my case, I run a server process for every item I need to scan. Maybe when it is runned for 1 item, the process takes 1 second. For another item maybe it takes more. I can't establish 1 second for every item. What I need is to increase the progressmeter when the process has complete.
I tried this:

for(int i=0;i<items;i++){
        //Server process for the item
        Events.echoEvent("onProcesoCompletado", BTNProcesar, null);
}
public void onProcesoCompletado$BTNProcesar(){
	int current = ++percent * 100 / all;
	progresoAcciones.setValue(current);
}

But progressmeter is still painted at the end of all

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answered 2012-10-11 02:31:36 +0800

vincentjian
2245 ● 6

Hi Neus,

I have modified the code, take a look on the zk fiddle. Not sure if it is the best implementation.

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answered 2012-12-04 17:11:05 +0800

Neus
1415 ● 14

Hi,
It's been a long since I started this thread but I'm with this problem yet.
I studied your example and I realize taht it is increasing using the tick of the timer, too. If I set the timer delay to 5000 the progressmeter is increased every 5 seconds so it is not taking into account when the server process ends.
I saw this post http://www.zkoss.org/forum/listComment/18987-Update-Progressmeter-form-java-controller?lang=en and I tried to get something straight about it but I'm not able to do that yet.
Any other idea to help me?
Thank you

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answered 2012-12-05 08:24:54 +0800

vincentjian
2245 ● 6

Hi Neus,

I tried to update progress meter by server push and it works. Here is the sample code:

<!-- ZUL page -->
<zk>
	<window apply="test.ProgressComposer">
		<progressmeter id="pm" value="0" />
		<button id="btn" label="start" />
	</window>
</zk>

public class ProgressComposer extends SelectorComposer<Window> {
	
	private static final long serialVersionUID = -8327879927085566401L;
	
	@Wire
	private Progressmeter pm;
	@WireVariable
	private Desktop desktop;
	
	private int all = 10;
	
	private Thread myThread = new Thread() {
		public void run() {
			if(!desktop.isServerPushEnabled())
				return;
			
			try {
				for (int i = 1; i <= all; i++) {
					long ms = (long) (Math.random() * 2000); //simulate long operation
					Thread.sleep(ms);
					
					Executions.activate(desktop);
					progress(i);
					Executions.deactivate(desktop);
				}
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	};
	@Listen("onClick = #btn")
	public void startProgress(Event event) {
		desktop.enableServerPush(true);
		myThread.start();
	}
	
	private void progress(int current) {
		pm.setValue(current * 100 /all);
		if (current == all)
			desktop.enableServerPush(false);
	}
}

Hope it solve your problem.

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answered 2012-12-05 08:40:37 +0800

vincentjian
2245 ● 6

And here is another solution if you would like to use EventQueue instead of ServePush:

public class ProgressComposer extends SelectorComposer<Window> {
	
	private static final long serialVersionUID = -8327879927085566401L;
	
	@Wire
	private Progressmeter pm;
	@WireVariable
	private Desktop desktop;
	
	private int all = 10;
	private final EventQueue<Event> que = EventQueues.lookup("progress", EventQueues.SESSION, true);
	private Thread myThread = new Thread() {
		public void run() {
			try {
				for (int i = 1; i <= all; i++) {
					long ms = (long) (Math.random() * 2000); //simulate long operation
					Thread.sleep(ms);
					
					que.publish(new Event("next", null, new Integer(i)));
				}
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
			
		}
	};
	@Listen("onClick = #btn")
	public void startProgress(Event event) {
		myThread.start();
	}
	
	@Subscribe(value = "progress", scope = EventQueues.SESSION)
	public void progress(Event event) {
		Integer current = (Integer) event.getData();
		pm.setValue(current * 100 /all);
	}
}