[Gtk-sharp-list] refreshing Gtk.TextView and EntryCompletion

[John Luke]

Hello,
The problem is: // Using threads....
Gtk# is thread-aware but not thread-safe.  Please see Gtk.ThreadNotify
or GLib.Idle docs, or search the archives for the numerous posts about
Gtk# and threading, etc.  You can only modify the gui through the main
thread.

Gtk# 2.0 will have Gtk.EntryCompletion (there is an unstable 1.9.1
release if you want to try it).

On Thu, 2004-12-23 at 07:27 -0600, Javier Díaz wrote:
> Hey guys
> 
> I'm writing an example of how to use Google Suggest technology in
> gtk-sharp applications
> 
> here is part of the code:
> ......
> public class GoogleCompletionGladeApp
> {
> 	[Widget] Gtk.Entry query_entry;
> 	[Widget] Gtk.TextView res_textview;
> 	[Widget] Gtk.Combo combo_res;
> 	
> 	static Gtk.TextBuffer buffer;
> 	static ACRequestHandler request_handler;
> 	
> 	private static Thread search_thread;
> 	private static string search_query;
> 	private static string[] Args;
> 	
> 	public GoogleCompletionGladeApp (string[] args) 
> 	{
> 		Args = args;
> 		request_handler = new ACRequestHandler(); 
> 		
> 		Application.Init();
> 
> 		Glade.XML gxml = new Glade.XML (null, "gui.glade", "window1", null);
> 		gxml.Autoconnect (this);
> 		
> 		buffer = res_textview.Buffer;
> 
> 		Application.Run();
> 	}
> 	public void OnWindowDeleteEvent (object o, DeleteEventArgs args) 
> 	{
> 		Application.Quit ();
> 		args.RetVal = true;
> 	}
> 	public void on_exec_button_clicked (object o, EventArgs args)
> 	{
> 		// Not using threads Here.....
> 		
> 		buffer.Clear();
> 		foreach (string s in request_handler.Require(query_entry.Text)){
> 			buffer.Text += s + '\n';
> 		}
> 	}
> 	public void on_query_entry_changed (object o, EventArgs args)
> 	{
> 		// Using threads....
> 		
> 		// "search_query" is a static member
> 		// it is going to be used by SearchThread()
> 		// I don't want SearchThread() to access "query_entry"  
> 		search_query = query_entry.Text;
> 		
> 		if (search_thread != null){
> 			search_thread.Abort();
> 		}
> 
> 		search_thread = new Thread (new ThreadStart (SearchThread));
> 		search_thread.Start();
> 	}
> 	private static void SearchThread()
> 	{
> 		try {
> 			lock (buffer){	
> 				buffer.Clear();
> 
> 				foreach (string s in request_handler.Require(search_query)){
> 					buffer.Text += s + '\n';
> 				}
> 			}
> 		} catch (ThreadAbortException) {
> 			buffer.Clear();
> 		}
> 	}
> }
> ------
> You can download the full source code from:
> http://isotopo.homeip.net/GooglehACe.tar.gz
> 
> I have the following problem:
> 
> The (Gtk.TextBuffer) buffer used to modify the (Gtk.TextView)
> res_textview, it is locked and modified by the thread that searches
> suggestions,... but the res_textview does not reloads the data from the
> buffer, I don't know how to explicitly refresh res_textview.
> 
> I can see that res_textview redraws itself very well on Expose event.
> 
> Is there any way SearchThread() can redraw res_textview safely ??.
> 
> I wish I had some sort of Completion widget like Monodevelo's
> CodeCompletion.CompletionWindow 
> 
> is there something like a Gtk.EntryCompletion on Gtk# 1.0.4 ?
>