Re: Editing in GtkTreeView - Automatic Edit and Unwanted Edit Box?

[zz excite it]

On Sunday 19 August 2007 18:34:32 David Nečas wrote:
> On Sun, Aug 19, 2007 at 05:16:49PM +0100, Tony Cowderoy wrote:
> > 
> > First question - is there any (preferably easy) way with a GtkTreeView 
> > to make any editable cell that is selected automatically enter edit mode 
> > and automatically commit the changes when focus moves elsewhere?
> 
> IIRC this is tricky to get right, so easy probably no.
> Hopefuly someone who has a working example will post it...
> 
> > Second - in the application that I'm trying to develop I have a 
> > GtkTreeview with data in a GtkListStore and some, but not all, of the 
> > cells editable.  If I have a cell selected, but not opened for editing 
> > (this includes non-editable cells) and I then start typing, an editable 
> > box appears in the bottom right-hand corner of the GtkTreeView, which 
> > displays what I'm typing.  If I press enter, it goes away and the text 
> > of the selected cell is not updated.  Does anyone know why this odd 
> > behaviour is happening and what I can do to stop it?
> 
> I suppose it's the search box.  In such case:
> 
>   gtk_tree_view_set_enable_search(treeview, FALSE);
> 
> (or set the corresponding property).
> 
> Yeti
> 
> --
> http://gwyddion.net/
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> 

Hi,
this should do something similar to what you are looking for:


static void list_edited(GtkCellRendererText * cell, gchar * path_string, gchar * new_text, gpointer user_data)
{
	GtkTreeView *treeview = (GtkTreeView *)user_data;
	GtkTreeModel *model;
	GtkTreeIter iter;
	guint column;
	
	/* Column number is passed as renderer object data */
	gpointer columnptr = g_object_get_data(G_OBJECT(cell), "column");
	
	column = GPOINTER_TO_UINT(columnptr);

	/* Get the iterator */
	model = gtk_tree_view_get_model(treeview);
	gtk_tree_model_get_iter_from_string(model, &iter, path_string);
	
	/* Update the model */
	gtk_list_store_set(GTK_LIST_STORE(model), &iter, column, new_text, -1);
}

static void text_editing_started (GtkCellRenderer ATTRIBUTE_UNUSED *cell, GtkCellEditable *editable,
                      const gchar *path, GCallback data)
{
	debug_err_msg("%s: started", __FUNCTION__);

	if (GTK_IS_ENTRY (editable)) {
		GtkEntry *entry = GTK_ENTRY (editable);
		GCallback cb_func = data;
		g_signal_connect(GTK_OBJECT(entry), "activate", (GCallback)cb_func, (char *)xstrdup(path));
	}
}


GtkWidget *string_list_create(int num, GtkSignalFunc func, int show_hide, int editable,...)
{
	GtkCellRenderer *renderer;
	GtkTreeViewColumn *column;
	GtkListStore *store;
	GtkWidget *tree;
	GtkTreeSelection *selection;
	GType *types;
	va_list titles;
	int i;
	char *tmp;
	char *label;
	double align;

	types = (GType *) malloc((num + 1) * sizeof(GType));
	for (i = 0; i < num; i++) {
		types[i] = G_TYPE_STRING;
	}

	store = gtk_list_store_newv(num, types);
	xfree(&types);
	tree = gtk_tree_view_new_with_model(GTK_TREE_MODEL(store));
	gtk_tree_view_set_rules_hint(GTK_TREE_VIEW(tree), TRUE);
	/* Setup the selection handler */
	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree));
	gtk_tree_selection_set_mode(selection, GTK_SELECTION_SINGLE);

	if (func) {
		g_signal_connect(selection, "changed", G_CALLBACK(func), NULL);
	}
	/* The view now holds a reference.  We can get rid of our own reference */
	g_object_unref(G_OBJECT(store));

	va_start(titles, editable);
	for (i = 0; i < num; i++) {
		/* Create a cell renderer */
		renderer = gtk_cell_renderer_text_new();

		tmp = va_arg(titles, char *);
		align = va_arg(titles, double);

		if (editable == EDITABLE || (editable == CUSTOM && va_arg(titles, int) == EDITABLE)) {
			g_object_set(renderer,"editable", TRUE, NULL);
			g_object_set_data(G_OBJECT(renderer), "column", GUINT_TO_POINTER(i));	
			g_signal_connect(GTK_OBJECT(renderer), "edited", GTK_SIGNAL_FUNC(list_edited), tree);
			if (editable == CUSTOM) {
				g_signal_connect(GTK_OBJECT(renderer), "editing-started", GTK_SIGNAL_FUNC(text_editing_started),
				(gpointer) va_arg(titles, void*));
			}
		}

		if (!tmp || show_hide == HIDE ) tmp = "";

		if (g_utf8_validate(tmp, -1, NULL) != TRUE) {
			label = g_locale_to_utf8(tmp , -1, NULL, NULL, NULL);
			/* Create a column, associating the "text" attribute of the  cell_renderer to the column of the model */
			column = gtk_tree_view_column_new_with_attributes(label, renderer, "text", i, NULL);
			xfree(&label);
		} else {
			column = gtk_tree_view_column_new_with_attributes(tmp, renderer, "text", i, NULL);
		}
		g_object_set (renderer,"xalign", align, NULL);
		/* Add the column to the view. */
		gtk_tree_view_append_column(GTK_TREE_VIEW(tree), column);
	}
	va_end(titles);
	return tree;
}



Ciao,
Tito

PS.: Hope it helps, cannot post an example at the moment 'cause i'm in a hurry. If you need, ask and i'll post it later.