mirror of
https://gitlab.gnome.org/GNOME/nautilus
synced 2024-09-19 07:41:26 +00:00
ec540c3e64
Fixed bug 5313 (location bar gets partly inactive during auto-completion) This was a GTK bug involving event timing. The fix was to add a workaround in NautilusEntry. * libnautilus-extensions/nautilus-entry.c: (nautilus_entry_initialize_class): Wire up default handler for selection_clear_event. (nautilus_entry_selection_clear): Bail out without doing anything if we are still the selection owner.
404 lines
11 KiB
C
404 lines
11 KiB
C
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
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/* NautilusEntry: one-line text editing widget. This consists of bug fixes
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* and other improvements to GtkEntry, and all the changes could be rolled
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* into GtkEntry some day.
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*
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* Copyright (C) 2000 Eazel, Inc.
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*
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* Author: John Sullivan <sullivan@eazel.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <config.h>
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#include "nautilus-entry.h"
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#include "nautilus-gtk-macros.h"
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#include <gdk/gdkkeysyms.h>
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#include <gtk/gtksignal.h>
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#include <gtk/gtkmain.h>
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#include <gtk/gtkwidget.h>
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#include <libgnome/gnome-defs.h>
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#include <libgnome/gnome-i18n.h>
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#include <libnautilus-extensions/nautilus-gdk-extensions.h>
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#include <libnautilus-extensions/nautilus-undo-signal-handlers.h>
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#include <orb/orbit.h>
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enum {
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USER_CHANGED,
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SELECTION_CHANGED,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL];
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static void nautilus_entry_initialize (NautilusEntry *entry);
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static void nautilus_entry_initialize_class (NautilusEntryClass *class);
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static void nautilus_entry_destroy (GtkObject *object);
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static gint nautilus_entry_key_press (GtkWidget *widget,
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GdkEventKey *event);
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static gint nautilus_entry_motion_notify (GtkWidget *widget,
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GdkEventMotion *event);
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static void nautilus_entry_insert_text (GtkEditable *editable,
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const gchar *text,
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gint length,
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gint *position);
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static gboolean nautilus_entry_selection_clear (GtkWidget *widget,
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GdkEventSelection *event);
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static void nautilus_entry_delete_text (GtkEditable *editable,
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gint start_pos,
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gint end_pos);
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static void nautilus_entry_set_selection (GtkEditable *editable,
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gint start_pos,
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gint end_pos);
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NAUTILUS_DEFINE_CLASS_BOILERPLATE (NautilusEntry, nautilus_entry, GTK_TYPE_ENTRY)
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static void
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nautilus_entry_initialize_class (NautilusEntryClass *class)
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{
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GtkWidgetClass *widget_class;
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GtkObjectClass *object_class;
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GtkEditableClass *editable_class;
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widget_class = GTK_WIDGET_CLASS (class);
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object_class = GTK_OBJECT_CLASS (class);
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editable_class = GTK_EDITABLE_CLASS (class);
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widget_class->key_press_event = nautilus_entry_key_press;
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widget_class->motion_notify_event = nautilus_entry_motion_notify;
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widget_class->selection_clear_event = nautilus_entry_selection_clear;
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object_class->destroy = nautilus_entry_destroy;
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editable_class->insert_text = nautilus_entry_insert_text;
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editable_class->delete_text = nautilus_entry_delete_text;
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editable_class->set_selection = nautilus_entry_set_selection;
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/* Set up signals */
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signals[USER_CHANGED] = gtk_signal_new
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("user_changed",
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GTK_RUN_LAST,
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object_class->type,
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GTK_SIGNAL_OFFSET (NautilusEntryClass,
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user_changed),
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gtk_marshal_NONE__NONE,
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GTK_TYPE_NONE, 0);
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signals[SELECTION_CHANGED] = gtk_signal_new
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("selection_changed",
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GTK_RUN_LAST,
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object_class->type,
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GTK_SIGNAL_OFFSET (NautilusEntryClass,
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selection_changed),
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gtk_marshal_NONE__NONE,
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GTK_TYPE_NONE, 0);
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gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL);
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}
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static void
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nautilus_entry_initialize (NautilusEntry *entry)
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{
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GtkWidget *widget;
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widget = GTK_WIDGET (entry);
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entry->user_edit = TRUE;
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entry->special_tab_handling = FALSE;
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entry->cursor_obscured = FALSE;
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/* Allow pointer motion events so we can expose an obscured cursor if necessary */
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gtk_widget_set_events (widget, gtk_widget_get_events (widget) | GDK_POINTER_MOTION_MASK);
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nautilus_undo_set_up_nautilus_entry_for_undo (entry);
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}
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GtkWidget *
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nautilus_entry_new (void)
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{
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return gtk_widget_new (NAUTILUS_TYPE_ENTRY, NULL);
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}
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GtkWidget *
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nautilus_entry_new_with_max_length (guint16 max)
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{
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GtkWidget *widget;
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widget = gtk_widget_new (NAUTILUS_TYPE_ENTRY, NULL);
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GTK_ENTRY (widget)->text_max_length = max;
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return widget;
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}
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static void
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nautilus_entry_destroy (GtkObject *object)
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{
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NautilusEntry *entry;
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entry = NAUTILUS_ENTRY (object);
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NAUTILUS_CALL_PARENT_CLASS (GTK_OBJECT_CLASS, destroy, (object));
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}
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static void
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obscure_cursor (NautilusEntry *entry)
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{
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if (entry->cursor_obscured) {
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return;
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}
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entry->cursor_obscured = TRUE;
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nautilus_gdk_window_set_invisible_cursor (GTK_ENTRY (entry)->text_area);
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}
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static gint
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nautilus_entry_key_press (GtkWidget *widget, GdkEventKey *event)
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{
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NautilusEntry *entry;
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GtkEditable *editable;
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int position;
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gint return_code;
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entry = NAUTILUS_ENTRY (widget);
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editable = GTK_EDITABLE (widget);
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if (!editable->editable) {
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return FALSE;
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}
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switch (event->keyval) {
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case GDK_Tab:
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/* The location bar entry wants TAB to work kind of
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* like it does in the shell for command completion,
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* so if we get a tab and there's a selection, we
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* should position the insertion point at the end of
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* the selection.
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*/
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if (entry->special_tab_handling
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&& editable->has_selection) {
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position = strlen (gtk_entry_get_text (GTK_ENTRY (editable)));
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gtk_entry_select_region (GTK_ENTRY (editable), position, position);
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return TRUE;
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}
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break;
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case GDK_KP_Enter:
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/* Fix bug in GtkEntry where keypad Enter key inserts
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* a character rather than activating like the other
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* Enter key.
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*/
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gtk_widget_activate (widget);
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return TRUE;
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default:
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break;
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}
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obscure_cursor (entry);
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return_code = NAUTILUS_CALL_PARENT_CLASS (GTK_WIDGET_CLASS,
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key_press_event,
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(widget, event));
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gtk_signal_emit (GTK_OBJECT (widget), signals[SELECTION_CHANGED]);
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return return_code;
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}
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static gint
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nautilus_entry_motion_notify (GtkWidget *widget, GdkEventMotion *event)
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{
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gint return_code;
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guint old_start_pos, old_end_pos;
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GdkCursor *cursor;
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NautilusEntry *entry;
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/* Reset cursor to I-Beam */
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entry = NAUTILUS_ENTRY (widget);
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if (entry->cursor_obscured) {
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cursor = gdk_cursor_new (GDK_XTERM);
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gdk_window_set_cursor (GTK_ENTRY (entry)->text_area, cursor);
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gdk_cursor_destroy (cursor);
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entry->cursor_obscured = FALSE;
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}
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if (GTK_ENTRY (widget)->button == 0) {
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return FALSE;
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}
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old_start_pos = GTK_EDITABLE (widget)->selection_start_pos;
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old_end_pos = GTK_EDITABLE (widget)->selection_end_pos;
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return_code = NAUTILUS_CALL_PARENT_CLASS (GTK_WIDGET_CLASS, motion_notify_event, (widget, event));
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if (GTK_EDITABLE (widget)->selection_start_pos != old_start_pos ||
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GTK_EDITABLE (widget)->selection_end_pos != old_end_pos) {
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gtk_signal_emit (GTK_OBJECT (widget), signals[SELECTION_CHANGED]);
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}
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return return_code;
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}
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/**
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* nautilus_entry_select_all
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*
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* Select all text, leaving the text cursor position at the end.
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*
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* @entry: A NautilusEntry
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**/
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void
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nautilus_entry_select_all (NautilusEntry *entry)
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{
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g_return_if_fail (NAUTILUS_IS_ENTRY (entry));
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gtk_editable_set_position (GTK_EDITABLE (entry), -1);
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gtk_editable_select_region (GTK_EDITABLE (entry), 0, -1);
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}
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static gboolean
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select_all_at_idle (NautilusEntry *entry)
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{
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nautilus_entry_select_all (entry);
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return FALSE;
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}
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/**
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* nautilus_entry_select_all_at_idle
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*
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* Select all text at the next idle, not immediately.
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* This is useful when reacting to a key press, because
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* changing the selection and the text cursor position doesn't
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* work in a key_press signal handler.
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*
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* @entry: A NautilusEntry
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**/
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void
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nautilus_entry_select_all_at_idle (NautilusEntry *entry)
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{
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g_return_if_fail (NAUTILUS_IS_ENTRY (entry));
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/* If the text cursor position changes in this routine
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* then gtk_entry_key_press will unselect (and we want
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* to move the text cursor position to the end).
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*/
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gtk_idle_add ((GtkFunction)select_all_at_idle, entry);
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}
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/**
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* nautilus_entry_set_text
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*
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* This function wraps gtk_entry_set_text. It sets undo_registered
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* to TRUE and preserves the old value for a later restore. This is
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* done so the programmatic changes to the entry do not register
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* with the undo manager.
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*
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* @entry: A NautilusEntry
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* @test: The text to set
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**/
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void
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nautilus_entry_set_text (NautilusEntry *entry, const gchar *text)
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{
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g_return_if_fail (NAUTILUS_IS_ENTRY (entry));
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entry->user_edit = FALSE;
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gtk_entry_set_text (GTK_ENTRY (entry), text);
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entry->user_edit = TRUE;
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gtk_signal_emit (GTK_OBJECT (entry), signals[SELECTION_CHANGED]);
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}
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void
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nautilus_entry_set_selection (GtkEditable *editable,
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gint start_pos,
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gint end_pos)
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{
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NAUTILUS_CALL_PARENT_CLASS (GTK_EDITABLE_CLASS, set_selection,
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(editable, start_pos, end_pos));
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gtk_signal_emit (GTK_OBJECT (editable), signals[SELECTION_CHANGED]);
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}
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static void
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nautilus_entry_insert_text (GtkEditable *editable, const gchar *text,
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gint length, gint *position)
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{
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NautilusEntry *entry;
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entry = NAUTILUS_ENTRY(editable);
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/* Fire off user changed signals */
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if (entry->user_edit) {
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gtk_signal_emit (GTK_OBJECT (editable), signals[USER_CHANGED]);
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}
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NAUTILUS_CALL_PARENT_CLASS (GTK_EDITABLE_CLASS, insert_text,
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(editable, text, length, position));
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gtk_signal_emit (GTK_OBJECT (editable), signals[SELECTION_CHANGED]);
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}
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static void
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nautilus_entry_delete_text (GtkEditable *editable, gint start_pos, gint end_pos)
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{
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NautilusEntry *entry;
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entry = NAUTILUS_ENTRY(editable);
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/* Fire off user changed signals */
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if (entry->user_edit) {
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gtk_signal_emit (GTK_OBJECT (editable), signals[USER_CHANGED]);
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}
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NAUTILUS_CALL_PARENT_CLASS (GTK_EDITABLE_CLASS, delete_text,
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(editable, start_pos, end_pos));
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gtk_signal_emit (GTK_OBJECT (editable), signals[SELECTION_CHANGED]);
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}
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/* Overridden to work around GTK bug. The selection_clear_event is queued
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* when the selection changes. Changing the selection to NULL and then
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* back to the original selection owner still sends the event, so the
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* selection owner then gets the selection ripped away from it. We ran into
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* this with type-completion behavior in NautilusLocationBar (see bug 5313).
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* There's a FIXME comment that seems to be about this same issue in
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* gtk+/gtkselection.c, gtk_selection_clear.
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*/
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static gboolean
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nautilus_entry_selection_clear (GtkWidget *widget,
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GdkEventSelection *event)
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{
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g_return_val_if_fail (NAUTILUS_IS_ENTRY (widget), FALSE);
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g_return_val_if_fail (event != NULL, FALSE);
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if (gdk_selection_owner_get (event->selection) == widget->window) {
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return FALSE;
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}
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return NAUTILUS_CALL_PARENT_CLASS (GTK_WIDGET_CLASS,
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selection_clear_event,
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(widget, event));
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}
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