Notice main window when popup is closed

[GFEMajor]

Hi.

I have a main window that is calling a new window (lets call the new window popup).

In the popup i list some items (buttons). When the user clicks on an item, the popup is closed. The clicked item is stored in an puplic accessible variable.

Now i need to know in my main window when the popup is closed, to determine what the user has clicked.

Is this possible somehow? Or could it be solved otherwise?
I hope you understand my problem.

Greet Major

[mhulsman]

Make your own interface called CloseHandler or what ever you want. And in the window add a method called addCloseHandler and call that CloseHandler when you close it.

[GFEMajor]

i am a little bit confused. Can you give me a small example (with Classes called MainWindow and Popup if possible).

Thx Major

[cirovladimir]

Example

Can you give me a small example

ENTRY POINT:

package samples.client;

import samples.client.windows.popup.MainWindow;

import com.google.gwt.core.client.EntryPoint;

public class Main implements EntryPoint {

	@Override
	public void onModuleLoad() {
		MainWindow wndMain=new MainWindow();
		wndMain.setSize("100%", "100%");
		wndMain.setTitle("Main Window");
		
		wndMain.draw();
	}

}

MAIN WINDOW:

package samples.client.windows.popup;

import samples.client.windows.popup.PopupWindow.CloseHandler;

import com.smartgwt.client.widgets.IButton;
import com.smartgwt.client.widgets.Label;
import com.smartgwt.client.widgets.Window;
import com.smartgwt.client.widgets.events.ClickEvent;
import com.smartgwt.client.widgets.events.ClickHandler;

public class MainWindow extends Window {

	public MainWindow(){
		IButton btnShowPopup=new IButton("Show popup");
		btnShowPopup.addClickHandler(new ClickHandler() {
			@Override
			public void onClick(ClickEvent event) {
				showPopupWindow();
			}

			private void showPopupWindow() {
				PopupWindow wndPopup=new PopupWindow();
				wndPopup.addCloseHandler(new CloseHandler() {
					@Override
					public void onClosed(String message) {
						Label lblPopupWindowMessage=new Label(message);
						MainWindow.this.addItem(lblPopupWindowMessage);
					}
				});
				wndPopup.setTitle("Popup Window");
				wndPopup.setSize("50%", "50%");
				wndPopup.centerInPage();
				wndPopup.show();
			}
		});
		
		addItem(btnShowPopup);
	}
}

POPUP WINDOW:

package samples.client.windows.popup;

import java.util.ArrayList;
import java.util.List;

import com.smartgwt.client.widgets.IButton;
import com.smartgwt.client.widgets.Window;
import com.smartgwt.client.widgets.events.ClickEvent;
import com.smartgwt.client.widgets.events.ClickHandler;

public class PopupWindow extends Window {
	
	public static interface CloseHandler{
		void onClosed(String message);
	}
	private List<CloseHandler> closeHandlers=new ArrayList<CloseHandler>();
	public void addCloseHandler(CloseHandler handler){
		closeHandlers.add(handler);
	}
	public void removeHandler(CloseHandler handler){
		closeHandlers.remove(handler);
	}
	protected void fireCloseEvent(String message){
		for(CloseHandler handler:closeHandlers)
			handler.onClosed(message);
	}

	public PopupWindow() {
		IButton btnClosePopupWindow=new IButton("Close");
		btnClosePopupWindow.setTooltip("Close popup window");
		btnClosePopupWindow.addClickHandler(new ClickHandler() {
			@Override
			public void onClick(ClickEvent event) {
				PopupWindow.this.destroy();
				fireCloseEvent("Popup window has been destroyed");
			}
		});
		
		addItem(btnClosePopupWindow);
	}
}