I can only imagine that something is executing and causing the delay. In
hosted mode, the code below is slow enough to let me see the first popup
('Close 1') momentarily, but compiled (and run in Chrome) it's too fast to
see, 'Close 2'. is all I see until I click the button to close it. When you
click the 'Show Popup' button, it shows Close-1 and then in a deferred
command, Close-2.
If you put this in a blank project, do you still get a 1-2 sec delay?
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.DeferredCommand;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.PopupPanel;
import com.google.gwt.user.client.ui.RootPanel;
public class Main implements EntryPoint
{
public void onModuleLoad()
{
final PopupPanel p1 = new PopupPanel(false, false);
p1.add(new Button("Close 1", new ClickHandler()
{
@Override
public void onClick(ClickEvent event)
{
p1.hide();
}
}));
RootPanel.get().add(new Button("Show Popup", new ClickHandler()
{
@Override
public void onClick(ClickEvent event)
{
p1.center();
DeferredCommand.addCommand(new Command()
{
@Override
public void execute()
{
final PopupPanel p2 = new PopupPanel(false, false);
p2.add(new Button("Close 2", new ClickHandler()
{
@Override
public void onClick(ClickEvent event)
{
p2.hide();
}
}));
p2.center();
}
});
}
}));
}
}
Ian
http://examples.roughian.com
2009/7/9 rohan <[email protected]>
>
> Hi Ian,
>
> I have Implemented the same thing, while testing the application I
> found it was delaying about 1 or 2 sec.
> To show the popup show & hide takes about 1 or 2 secs. I have to show
> the same Popup in several places. It may cause performance issue.
> Is there any better way to do this????
>
> Thanks
> Rohan
>
> On Jul 8, 2:33 pm, Ian Bambury <[email protected]> wrote:
> > I think the Deferred command is actually a timer set to 1ms, so 1ms is
> > added.
> > Also it will run after everything else that has been queued so far. This
> > means that other deferred commands issued so far will run first, and also
> > that any RPC/Requestbuilder requests that have been issued *might* have
> > returned in the meantime.
> >
> > Other than that, actual performance isn't compromised, and the
> *perceived*
> > response time (by the user) is vastly improved :-)
> >
> > Ian
> >
> > http://examples.roughian.com
> >
> > 2009/7/8 rohan <[email protected]>
> >
> >
> >
> > > Thanks Ian Bambury
> >
> > > It is working fine,...is it effects the performance ?????
> >
> > > --Subbu
> >
> > > On Jul 8, 11:50 am, rohan <[email protected]> wrote:
> > > > In my situation the code is in If block
> > > > if( true) {
> > > > popup.show();
> > > > store.load() // it takes 5-6 sec.
> > > > // It is sequence of steps like server calls, developing front end,
> > > > other processing.
> > > > popup.hide();}
> >
> > > > If i execute it like this popup is not shown because popup.show &
> hide
> > > > both are executing at a time.
> > > > I removed popup.hide() to know whether popup is shown or not? It is
> > > > showing popup after completion of all the process it shows popup.
> > > > ( after execution of IF block)
> > > > How handle this situation???/
> > > > Thanks
> > > > Rohan
> >
> > > > On Jul 8, 10:42 am, Mikhail M <[email protected]> wrote:
> >
> > > > > I suppose you should use listeners. And call method popup.hide();
> in
> > > right
> > > > > place
> > > > > For example
> > > > > popup.show();
> > > > > store.load() // it takes 5-6 sec.
> > > > > popup.hide();
> > > > > INCORRECT
> >
> > > > > but
> > > > > popup.show();
> > > > > store.addListener(new StoreListenerAdapter() {
> > > > > @Override
> > > > > onLoad() {
> > > > > popup.hide();
> > > > > }});
> >
> > > > > works properly
> >
> > > > > Check your source code once more and use listeners
> >
> > > > > 2009/7/8 rohan <[email protected]>
> >
> > > > > > I am showing transparent screen using a popup.
> >
> > > > > > On an onclick event of a button Iam showing a popup in an ‘if’
> block,
> > > > > > but the popup is only shown when if returns from the if block,
> why it
> > > > > > behaves like this? Is there any other way to show a popup in an
> ‘if’
> > > > > > block?
> >
> > > > > > Below is the code
> >
> > > > > > if(Condition){
> > > > > > popup.show();
> > > > > > do some work;//// it takes 5-6 sec. This time my screen is
> blocked
> > > > > > with popup
> > > > > > popup.hide();
> >
> > > > > > }
> >
> > > > > > But it is not working, If i remove popup.hide(), popup is shown
> after
> > > > > > the IF block executed. So at that time it is useless
> >
> > > > > > Can any one help me in this.
> >
> > > > > > Thanks
> > > > > > Rohan
> >
> > > > > --
> > > > > Best wishes
> > > > > Mikhail Mamaev
> >
>
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