Forgot to add. Doh!

svn path=/trunk/; revision=8281

1 files changed, 687 insertions, 0 deletions

diff --git a/widgets/text/e-completion-view.c b/widgets/text/e-completion-view.c
new file mode 100644
index 0000000000..026cb151dd
--- /dev/null
+++ b/widgets/text/e-completion-view.c
@@ -0,0 +1,687 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+
+/*
+ * ECompletionView - A text completion selection widget
+ * Copyright (C) 2000, 2001 Ximian, Inc.
+ *
+ * Author: Jon Trowbridge <trow@ximian.com>
+ * Adapted from code by Miguel de Icaza <miguel@ximian.com>
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+
+#include <config.h>
+#include <math.h>
+#include <gdk/gdkkeysyms.h>
+#include <gal/e-table/e-table-simple.h>
+#include <gal/e-table/e-table-scrolled.h>
+#include "e-completion-view.h"
+
+enum {
+	E_COMPLETION_VIEW_NONEMPTY,
+	E_COMPLETION_VIEW_ADDED,
+	E_COMPLETION_VIEW_FULL,
+	E_COMPLETION_VIEW_BROWSE,
+	E_COMPLETION_VIEW_UNBROWSE,
+	E_COMPLETION_VIEW_ACTIVATE,
+	E_COMPLETION_VIEW_LAST_SIGNAL
+};
+
+static guint e_completion_view_signals[E_COMPLETION_VIEW_LAST_SIGNAL] = { 0 };
+
+static void    e_completion_view_disconnect     (ECompletionView *cv);
+static ETable *e_completion_view_table          (ECompletionView *cv);
+static void    e_completion_view_clear_choices  (ECompletionView *cv);
+static void    e_completion_view_set_cursor_row (ECompletionView *cv, gint r);
+static void    e_completion_view_select         (ECompletionView *cv, gint r);
+
+static gint    e_completion_view_key_press_handler (GtkWidget *w, GdkEventKey *key_event, gpointer user_data);
+
+static void    e_completion_view_class_init (ECompletionViewClass *klass);
+static void    e_completion_view_init       (ECompletionView *completion);
+static void    e_completion_view_destroy    (GtkObject *object);
+
+static GtkObjectClass *parent_class;
+
+
+
+static gint
+e_completion_view_local_key_press_handler (GtkWidget *w, GdkEventKey *ev)
+{
+	return e_completion_view_key_press_handler (w, ev, w);
+}
+
+GtkType
+e_completion_view_get_type (void)
+{
+	static GtkType completion_view_type = 0;
+  
+	if (!completion_view_type) {
+		GtkTypeInfo completion_view_info = {
+			"ECompletionView",
+			sizeof (ECompletionView),
+			sizeof (ECompletionViewClass),
+			(GtkClassInitFunc) e_completion_view_class_init,
+			(GtkObjectInitFunc) e_completion_view_init,
+			NULL, NULL, /* reserved */
+			(GtkClassInitFunc) NULL
+		};
+
+		completion_view_type = gtk_type_unique (gtk_vbox_get_type (), &completion_view_info);
+	}
+
+	return completion_view_type;
+}
+
+static void
+e_completion_view_class_init (ECompletionViewClass *klass)
+{
+	GtkObjectClass *object_class = (GtkObjectClass *) klass;
+	GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+	parent_class = GTK_OBJECT_CLASS (gtk_type_class (gtk_vbox_get_type ()));
+
+	e_completion_view_signals[E_COMPLETION_VIEW_NONEMPTY] =
+		gtk_signal_new ("nonempty",
+				GTK_RUN_LAST,
+				object_class->type,
+				GTK_SIGNAL_OFFSET (ECompletionViewClass, nonempty),
+				gtk_marshal_NONE__NONE,
+				GTK_TYPE_NONE, 0);
+
+	e_completion_view_signals[E_COMPLETION_VIEW_ADDED] =
+		gtk_signal_new ("added",
+				GTK_RUN_LAST,
+				object_class->type,
+				GTK_SIGNAL_OFFSET (ECompletionViewClass, added),
+				gtk_marshal_NONE__NONE,
+				GTK_TYPE_NONE, 0);
+
+	e_completion_view_signals[E_COMPLETION_VIEW_FULL] =
+		gtk_signal_new ("full",
+				GTK_RUN_LAST,
+				object_class->type,
+				GTK_SIGNAL_OFFSET (ECompletionViewClass, full),
+				gtk_marshal_NONE__NONE,
+				GTK_TYPE_NONE, 0);
+
+	e_completion_view_signals[E_COMPLETION_VIEW_BROWSE] =
+		gtk_signal_new ("browse",
+				GTK_RUN_LAST,
+				object_class->type,
+				GTK_SIGNAL_OFFSET (ECompletionViewClass, browse),
+				gtk_marshal_NONE__POINTER,
+				GTK_TYPE_NONE, 1,
+				GTK_TYPE_POINTER);
+
+	e_completion_view_signals[E_COMPLETION_VIEW_UNBROWSE] =
+		gtk_signal_new ("unbrowse",
+				GTK_RUN_LAST,
+				object_class->type,
+				GTK_SIGNAL_OFFSET (ECompletionViewClass, unbrowse),
+				gtk_marshal_NONE__NONE,
+				GTK_TYPE_NONE, 0);
+
+	e_completion_view_signals[E_COMPLETION_VIEW_ACTIVATE] =
+		gtk_signal_new ("activate",
+				GTK_RUN_LAST,
+				object_class->type,
+				GTK_SIGNAL_OFFSET (ECompletionViewClass, activate),
+				gtk_marshal_NONE__POINTER_POINTER,
+				GTK_TYPE_NONE, 2,
+				GTK_TYPE_POINTER, GTK_TYPE_POINTER);
+
+	gtk_object_class_add_signals (object_class, e_completion_view_signals, E_COMPLETION_VIEW_LAST_SIGNAL);
+
+	object_class->destroy = e_completion_view_destroy;
+	widget_class->key_press_event = e_completion_view_local_key_press_handler;
+}
+
+static void
+e_completion_view_init (ECompletionView *completion)
+{
+}
+
+static void
+e_completion_view_destroy (GtkObject *object)
+{
+	ECompletionView *cv = E_COMPLETION_VIEW (object);
+
+	e_completion_view_disconnect (cv);
+	e_completion_view_clear_choices (cv);
+
+	if (cv->key_widget) {
+		gtk_signal_disconnect (GTK_OBJECT (cv->key_widget), cv->key_signal_id);
+		gtk_object_unref (GTK_OBJECT (cv->key_widget));
+	}
+
+	if (cv->completion)
+		gtk_object_unref (GTK_OBJECT (cv->completion));
+
+
+	if (parent_class->destroy)
+		(parent_class->destroy) (object);
+}
+
+static void
+e_completion_view_disconnect (ECompletionView *cv)
+{
+	g_return_if_fail (cv != NULL);
+	g_return_if_fail (E_IS_COMPLETION_VIEW (cv));
+
+	if (cv->begin_signal_id)
+		gtk_signal_disconnect (GTK_OBJECT (cv->completion), cv->begin_signal_id);
+	if (cv->comp_signal_id)
+		gtk_signal_disconnect (GTK_OBJECT (cv->completion), cv->comp_signal_id);
+	if (cv->restart_signal_id)
+		gtk_signal_disconnect (GTK_OBJECT (cv->completion), cv->restart_signal_id);
+	if (cv->cancel_signal_id)
+		gtk_signal_disconnect (GTK_OBJECT (cv->completion), cv->cancel_signal_id);
+	if (cv->end_signal_id)
+		gtk_signal_disconnect (GTK_OBJECT (cv->completion), cv->end_signal_id);
+	
+	cv->begin_signal_id   = 0;
+	cv->comp_signal_id    = 0;
+	cv->restart_signal_id = 0;
+	cv->end_signal_id     = 0;
+}
+
+static ETable *
+e_completion_view_table (ECompletionView *cv)
+{
+	return e_table_scrolled_get_table (E_TABLE_SCROLLED (cv->table));
+}
+
+static void
+e_completion_view_clear_choices (ECompletionView *cv)
+{
+	GList *i;
+
+	g_return_if_fail (cv != NULL);
+	g_return_if_fail (E_IS_COMPLETION_VIEW (cv));
+
+	for (i = cv->choices; i != NULL; i = g_list_next (i))
+		g_free (i->data);
+
+	g_list_free (cv->choices);
+	cv->choices = NULL;
+
+	cv->choice_count = 0;
+}
+
+static void
+e_completion_view_set_cursor_row (ECompletionView *cv, gint r)
+{
+	ETable *table;
+	GtkAdjustment *adj;
+	gint x, y1, y2, r1, r2, c;
+	double fracline;
+	gint iteration_count=0;
+
+	g_return_if_fail (cv != NULL);
+	g_return_if_fail (E_IS_COMPLETION_VIEW (cv));
+	g_return_if_fail (r < cv->choice_count);
+
+	adj = e_scroll_frame_get_vadjustment (E_SCROLL_FRAME (cv->table));	
+
+	table = e_completion_view_table (cv);
+
+	if (r < 0) {
+		e_table_selection_model_clear (table->selection);
+		
+		/* Move back to the top when we clear the selection */
+		gtk_adjustment_set_value (adj, adj->lower);
+		return;
+	}
+
+	e_table_set_cursor_row (table, r);
+
+	/* OK, now the tricky bit.  We try to insure that this row is
+	   visible. */
+	
+	/* If we are selecting the first or last row, then it is easy.  We just
+	   cram the vadjustment all the way up/down. */
+	if (r == 0) {
+		gtk_adjustment_set_value (adj, adj->lower);
+		return;
+	} else if (r == cv->choice_count - 1) {		
+		gtk_adjustment_set_value (adj, adj->upper - adj->page_size);
+		return;
+	}
+	
+	fracline = ((adj->upper - adj->lower - adj->page_size) / cv->choice_count) / 4;
+
+	while (iteration_count < 100) {
+		x = GTK_LAYOUT(table->table_canvas)->hadjustment->value;
+		y1 = GTK_LAYOUT(table->table_canvas)->vadjustment->value;
+		
+		y2 = y1 + cv->table->allocation.height;
+		
+		e_table_group_compute_location (e_completion_view_table (cv)->group, &x, &y1, &r1, &c);
+		e_table_group_compute_location (e_completion_view_table (cv)->group, &x, &y2, &r2, &c);
+	
+		if (r <= r1) {
+			gtk_adjustment_set_value (adj, adj->value - fracline);
+		} else if (r >= r2) {
+			gtk_adjustment_set_value (adj, adj->value + fracline);
+		} else 
+			return;
+
+		++iteration_count;
+	}
+
+	g_assert_not_reached ();
+}
+
+static void
+e_completion_view_select (ECompletionView *cv, gint r)
+{
+	const gchar *sel = (const gchar *) g_list_nth_data (cv->choices, r);
+	gpointer extra = e_completion_find_extra_data (cv->completion, sel);
+
+	cv->selection = r;
+	e_completion_view_set_cursor_row (cv, r);
+	gtk_signal_emit (GTK_OBJECT (cv), e_completion_view_signals[E_COMPLETION_VIEW_ACTIVATE], sel, extra);
+}
+
+static gint
+e_completion_view_key_press_handler (GtkWidget *w, GdkEventKey *key_event, gpointer user_data)
+{
+	ECompletionView *cv = E_COMPLETION_VIEW (user_data);
+	gint dir = 0;
+
+	/* Start up a completion.*/
+	if (cv->complete_key && key_event->keyval == cv->complete_key && !cv->editable) {
+		gtk_signal_emit (GTK_OBJECT (cv), e_completion_view_signals[E_COMPLETION_VIEW_BROWSE], NULL);
+		goto stop_emission;
+	}
+
+	/* Stop our completion. */
+	if (cv->uncomplete_key && key_event->keyval == cv->uncomplete_key && cv->editable && cv->selection < 0) {
+		e_completion_view_set_cursor_row (cv, -1);
+		gtk_signal_emit (GTK_OBJECT (cv), e_completion_view_signals[E_COMPLETION_VIEW_UNBROWSE]);
+		goto stop_emission;
+	}
+
+	if (!cv->editable)
+		return FALSE;
+
+	switch (key_event->keyval) {
+	case GDK_Down:
+	case GDK_KP_Down:
+		dir = 1;
+		break;
+
+	case GDK_Up:
+	case GDK_KP_Up:
+		dir = -1;
+		break;
+
+	case GDK_Return:
+	case GDK_KP_Enter:
+	case GDK_space:
+	case GDK_KP_Space:
+	case GDK_Right:    /* Lynx-style "forward" */
+	case GDK_KP_Right:
+		/* Only handle these key presses if we have an active selection;
+		   otherwise, pass them on. */
+		if (cv->selection >= 0) {
+			e_completion_view_select (cv, cv->selection);
+			goto stop_emission;
+		}
+		return FALSE;
+
+	case GDK_Escape:
+	case GDK_Left:     /* Lynx-style "back" */
+	case GDK_KP_Left:
+		if (cv->selection >= 0) {
+			/* A hack to "unbrowse" us on these keys if we are browsing. */
+			cv->selection = -1;
+			dir = 0;
+			break;
+		} 
+
+		return FALSE;
+
+	default:
+		return FALSE;
+	}
+
+	cv->selection += dir;
+
+	if (cv->selection >= cv->choice_count) {
+		cv->selection = cv->choice_count - 1;
+		/* Don't re-emit the browse signal */
+		goto stop_emission;
+	}
+
+	e_completion_view_set_cursor_row (cv, cv->selection);
+
+	if (cv->selection >= 0)
+		gtk_signal_emit (GTK_OBJECT (cv), e_completion_view_signals[E_COMPLETION_VIEW_BROWSE], 
+				 g_list_nth_data (cv->choices, cv->selection));
+	else
+		gtk_signal_emit (GTK_OBJECT (cv), e_completion_view_signals[E_COMPLETION_VIEW_UNBROWSE]);
+
+ stop_emission:
+	gtk_signal_emit_stop_by_name (GTK_OBJECT (w), "key_press_event");
+
+	return TRUE;
+}
+
+static void
+begin_completion_cb (ECompletion *completion, gpointer user_data)
+{
+	ECompletionView *cv = E_COMPLETION_VIEW (user_data);
+
+	e_completion_view_clear_choices (cv);
+	cv->have_all_choices = FALSE;
+
+	e_table_model_changed (cv->model);
+}
+
+static void
+restart_completion_cb (ECompletion *completion, gpointer user_data)
+{
+	/* For now, handle restarts like the beginning of a new completion. */
+	begin_completion_cb (completion, user_data);
+}
+
+static void
+cancel_completion_cb (ECompletion *completion, gpointer user_data)
+{
+	ECompletionView *cv = E_COMPLETION_VIEW (user_data);
+
+	/* On a cancel, clear our choices and issue an "unbrowse" signal. */
+	e_completion_view_clear_choices (cv);
+	cv->have_all_choices = TRUE;
+	e_completion_view_set_cursor_row (cv, -1);
+	e_table_model_changed (cv->model);
+
+	gtk_signal_emit (GTK_OBJECT (cv), e_completion_view_signals[E_COMPLETION_VIEW_UNBROWSE]);
+}
+
+static void
+completion_cb (ECompletion *completion, const gchar *text, gpointer extra_data, gpointer user_data)
+{
+	ECompletionView *cv = E_COMPLETION_VIEW (user_data);
+	gint r = cv->choice_count;
+	gboolean first = (cv->choices == NULL);
+
+	cv->choices = g_list_append (cv->choices, g_strdup (text));
+	++cv->choice_count;
+
+	e_table_model_row_inserted (cv->model, r);
+
+	if (first)
+		gtk_signal_emit (GTK_OBJECT (cv), e_completion_view_signals[E_COMPLETION_VIEW_NONEMPTY]);
+
+	gtk_signal_emit (GTK_OBJECT (cv), e_completion_view_signals[E_COMPLETION_VIEW_ADDED]);
+}
+
+static void
+end_completion_cb (ECompletion *completion, gpointer user_data)
+{
+	ECompletionView *cv = E_COMPLETION_VIEW (user_data);
+
+	/* Do a final refresh of the table. */
+	e_table_model_changed (cv->model);
+
+	cv->have_all_choices = TRUE;
+	gtk_signal_emit (GTK_OBJECT (cv), e_completion_view_signals[E_COMPLETION_VIEW_FULL]);
+}
+
+/*** Table Callbacks ***/
+
+static char *simple_spec = 
+"<ETableSpecification no-headers=\"true\" draw-grid=\"false\" cursor-mode=\"line\"> "
+"  <ETableColumn model_col=\"0\" _title=\"Node\" expansion=\"1.0\" "
+"         minimum_width=\"16\" resizable=\"true\" cell=\"string\" "
+"         compare=\"string\"/> "
+"       <ETableState>                  "
+"	        <column source=\"0\"/> "
+"	        <grouping></grouping>  "
+"        </ETableState>                "
+"</ETableSpecification>";
+
+static gint
+table_col_count (ETableModel *etm, gpointer data)
+{
+	return 1;
+}
+
+static gint
+table_row_count (ETableModel *etm, gpointer data)
+{
+	ECompletionView *cv = E_COMPLETION_VIEW (data);
+	return cv->choice_count;
+}
+
+static gboolean
+table_is_cell_editable (ETableModel *etm, gint c, gint r, gpointer data)
+{
+	return FALSE;
+}
+
+static gpointer
+table_value_at (ETableModel *etm, gint c, gint r, gpointer data)
+{
+	ECompletionView *cv = E_COMPLETION_VIEW (data);
+	gpointer p;
+
+	p = g_list_nth_data (cv->choices, r);
+
+	return p;
+}
+
+static gchar *
+table_value_to_string (ETableModel *em, gint col, gconstpointer val, gpointer data)
+{
+	return (gchar *) val;
+}
+
+static void
+table_click_cb (ETable *et, gint r, gint c, GdkEvent *ev, gpointer data)
+{
+	ECompletionView *cv = E_COMPLETION_VIEW (data);
+
+	e_completion_view_select (cv, r);
+}
+
+void
+e_completion_view_construct (ECompletionView *cv, ECompletion *completion)
+{
+	GtkWidget *frame;
+
+	g_return_if_fail (cv != NULL);
+	g_return_if_fail (E_IS_COMPLETION_VIEW (cv));
+	g_return_if_fail (completion != NULL);
+	g_return_if_fail (E_IS_COMPLETION (completion));
+
+	/* Make sure we don't call construct twice. */
+	g_return_if_fail (cv->completion == NULL);
+
+	cv->completion = completion;
+	gtk_object_ref (GTK_OBJECT (completion));
+
+	cv->begin_signal_id   = gtk_signal_connect (GTK_OBJECT (completion),
+						    "begin_completion",
+						    GTK_SIGNAL_FUNC (begin_completion_cb),
+						    cv);
+	cv->comp_signal_id    = gtk_signal_connect (GTK_OBJECT (completion),
+						    "completion",
+						    GTK_SIGNAL_FUNC (completion_cb),
+						    cv);
+	cv->restart_signal_id = gtk_signal_connect (GTK_OBJECT (completion),
+						    "restart_completion",
+						    GTK_SIGNAL_FUNC (restart_completion_cb),
+						    cv);
+	cv->cancel_signal_id  = gtk_signal_connect (GTK_OBJECT (completion),
+						    "cancel_completion",
+						    GTK_SIGNAL_FUNC (cancel_completion_cb),
+						    cv);
+	cv->end_signal_id     = gtk_signal_connect (GTK_OBJECT (completion),
+						    "end_completion",
+						    GTK_SIGNAL_FUNC (end_completion_cb),
+						    cv);
+
+	cv->model = e_table_simple_new (table_col_count,
+					table_row_count,
+					table_value_at,
+					NULL,
+					table_is_cell_editable,
+					NULL, NULL, NULL, NULL,
+					table_value_to_string,
+					cv);
+
+	cv->table = e_table_scrolled_new (cv->model, NULL, simple_spec, NULL);
+
+	frame = gtk_frame_new (NULL);
+
+	gtk_container_add (GTK_CONTAINER (cv), frame);
+	gtk_container_add (GTK_CONTAINER (frame), cv->table);
+	gtk_widget_show_all (frame);
+
+	gtk_signal_connect (GTK_OBJECT (e_completion_view_table (cv)),
+			    "click",
+			    GTK_SIGNAL_FUNC (table_click_cb),
+			    cv);
+
+	cv->selection = -1;
+}
+
+GtkWidget *
+e_completion_view_new (ECompletion *completion)
+{
+	gpointer p;
+
+	g_return_val_if_fail (completion != NULL, NULL);
+	g_return_val_if_fail (E_IS_COMPLETION (completion), NULL);
+
+	p = gtk_type_new (e_completion_view_get_type ());
+
+	e_completion_view_construct (E_COMPLETION_VIEW (p), completion);
+
+	return GTK_WIDGET (p);
+}
+
+void
+e_completion_view_connect_keys (ECompletionView *cv, GtkWidget *w)
+{
+	g_return_if_fail (cv != NULL);
+	g_return_if_fail (E_IS_COMPLETION_VIEW (cv));
+	g_return_if_fail (w == NULL || GTK_IS_WIDGET (w));
+
+	if (cv->key_widget) {
+		gtk_signal_disconnect (GTK_OBJECT (cv->key_widget), cv->key_signal_id);
+		gtk_object_unref (GTK_OBJECT (cv->key_widget));
+	}
+
+	if (w) {
+		cv->key_widget = w;
+		gtk_object_ref (GTK_OBJECT (w));
+
+		cv->key_signal_id = gtk_signal_connect (GTK_OBJECT (w),
+							"key_press_event",
+							GTK_SIGNAL_FUNC (e_completion_view_key_press_handler),
+							cv);
+	} else {
+		cv->key_widget = NULL;
+		cv->key_signal_id = 0;
+	}
+}
+
+void
+e_completion_view_set_complete_key (ECompletionView *cv, gint keyval)
+{
+	g_return_if_fail (cv != NULL);
+	g_return_if_fail (E_IS_COMPLETION_VIEW (cv));
+
+	cv->complete_key = keyval;
+}
+
+void
+e_completion_view_set_uncomplete_key (ECompletionView *cv, gint keyval)
+{
+	g_return_if_fail (cv != NULL);
+	g_return_if_fail (E_IS_COMPLETION_VIEW (cv));
+
+	cv->uncomplete_key = keyval;
+}
+
+void
+e_completion_view_set_width (ECompletionView *cv, gint width)
+{
+	GtkWidget *w;
+	gint y, r, dummy, line_height;
+	double drop_room, lines;
+
+	g_return_if_fail (cv != NULL);
+	g_return_if_fail (E_IS_COMPLETION_VIEW (cv));
+	g_return_if_fail (width > 0);
+
+	w = GTK_WIDGET (cv);
+
+	if (! GTK_WIDGET_REALIZED (w)) {
+		gtk_widget_set_usize (w, width, -1);
+		return;
+	}
+
+	/* A Horrible Hack(tm) to figure out the height of a single table row */
+	
+	for (line_height=5, r=0; r == 0 && line_height < 1000; line_height += 2) {
+		dummy = 0;
+		e_table_group_compute_location (e_completion_view_table (cv)->group,
+						&dummy, &line_height, &r, &dummy);
+	}
+	if (line_height >= 1000) {
+		/* Something went wrong, so we make a (possibly very lame) guess */
+		line_height = 30;
+	}
+
+
+	gdk_window_get_origin (w->window, NULL, &y);
+	y += w->allocation.y;
+
+	lines = 5; /* default maximum */
+	lines = MIN (lines, cv->choice_count);
+	
+	drop_room = (gdk_screen_height () - y) / (double)line_height;
+	drop_room = MAX (drop_room, 1);
+
+	lines = MIN (lines, drop_room);
+
+	/* We reduce the total height by a bit; in practice, this seems to work out well. */
+	gtk_widget_set_usize (w, width, (gint) floor (line_height * lines * 0.97));
+}
+
+void
+e_completion_view_set_editable (ECompletionView *cv, gboolean x)
+{
+	g_return_if_fail (cv != NULL);
+	g_return_if_fail (E_IS_COMPLETION_VIEW (cv));
+
+	if (x == cv->editable)
+		return;
+
+	cv->editable = x;
+	cv->selection = -1;
+	e_completion_view_set_cursor_row (cv, -1);
+}
+