Introduce ESelectable and EFocusTracker.

EFocusTracker tracks the input focus within a window and helps keep
the sensitivity of "selectable" actions in the main menu up-to-date.
Selectable actions include Cut, Copy, Paste, Select All and Delete.

EFocusTracker has built-in support for widgets that implement the
GtkEditable interface such as GtkEntry and GtkTextView.  It also
supports custom widgets that implement the ESelectable interface,
which is a subset of GtkEditable and can apply to anything that
displays selectable content (esp. tree views and ETables).

This commit integrates EFocusTracker with EShellWindow, CompEditor,
EMsgComposer, and ESignatureManager.

It also bumps the GtkHTML requirement to 2.29.5 to utilize the new
GtkhtmlEditor:html constructor property.

1 files changed, 99 insertions, 0 deletions

diff --git a/widgets/misc/e-focus-tracker.h b/widgets/misc/e-focus-tracker.h
new file mode 100644
index 0000000000..679cc4b655
--- /dev/null
+++ b/widgets/misc/e-focus-tracker.h
@@ -0,0 +1,99 @@
+/*
+ * e-focus-tracker.h
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) version 3.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ *
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ */
+
+#ifndef E_FOCUS_TRACKER_H
+#define E_FOCUS_TRACKER_H
+
+#include <gtk/gtk.h>
+
+/* Standard GObject macros */
+#define E_TYPE_FOCUS_TRACKER \
+	(e_focus_tracker_get_type ())
+#define E_FOCUS_TRACKER(obj) \
+	(G_TYPE_CHECK_INSTANCE_CAST \
+	((obj), E_TYPE_FOCUS_TRACKER, EFocusTracker))
+#define E_FOCUS_TRACKER_CLASS(cls) \
+	(G_TYPE_CHECK_CLASS_CAST \
+	((cls), E_TYPE_FOCUS_TRACKER, EFocusTrackerClass))
+#define E_IS_FOCUS_TRACKER(obj) \
+	(G_TYPE_CHECK_INSTANCE_TYPE \
+	((obj), E_TYPE_FOCUS_TRACKER))
+#define E_IS_FOCUS_TRACKER_CLASS(cls) \
+	(G_TYPE_CHECK_CLASS_TYPE \
+	((cls), E_TYPE_FOCUS_TRACKER))
+#define E_FOCUS_TRACKER_GET_CLASS(obj) \
+	(G_TYPE_INSTANCE_GET_CLASS \
+	((obj), E_TYPE_FOCUS_TRACKER, EFocusTrackerClass))
+
+G_BEGIN_DECLS
+
+typedef struct _EFocusTracker EFocusTracker;
+typedef struct _EFocusTrackerClass EFocusTrackerClass;
+typedef struct _EFocusTrackerPrivate EFocusTrackerPrivate;
+
+struct _EFocusTracker {
+	GObject parent;
+	EFocusTrackerPrivate *priv;
+};
+
+struct _EFocusTrackerClass {
+	GObjectClass parent_class;
+};
+
+GType		e_focus_tracker_get_type	(void);
+EFocusTracker *	e_focus_tracker_new		(GtkWindow *window);
+GtkWidget *	e_focus_tracker_get_focus	(EFocusTracker *focus_tracker);
+GtkWindow *	e_focus_tracker_get_window	(EFocusTracker *focus_tracker);
+GtkAction *	e_focus_tracker_get_cut_clipboard_action
+						(EFocusTracker *focus_tracker);
+void		e_focus_tracker_set_cut_clipboard_action
+						(EFocusTracker *focus_tracker,
+						 GtkAction *cut_clipboard);
+GtkAction *	e_focus_tracker_get_copy_clipboard_action
+						(EFocusTracker *focus_tracker);
+void		e_focus_tracker_set_copy_clipboard_action
+						(EFocusTracker *focus_tracker,
+						 GtkAction *copy_clipboard);
+GtkAction *	e_focus_tracker_get_paste_clipboard_action
+						(EFocusTracker *focus_tracker);
+void		e_focus_tracker_set_paste_clipboard_action
+						(EFocusTracker *focus_tracker,
+						 GtkAction *paste_clipboard);
+GtkAction *	e_focus_tracker_get_delete_selection_action
+						(EFocusTracker *focus_tracker);
+void		e_focus_tracker_set_delete_selection_action
+						(EFocusTracker *focus_tracker,
+						 GtkAction *delete_selection);
+GtkAction *	e_focus_tracker_get_select_all_action
+						(EFocusTracker *focus_tracker);
+void		e_focus_tracker_set_select_all_action
+						(EFocusTracker *focus_tracker,
+						 GtkAction *select_all);
+void		e_focus_tracker_update_actions	(EFocusTracker *focus_tracker);
+void		e_focus_tracker_cut_clipboard	(EFocusTracker *focus_tracker);
+void		e_focus_tracker_copy_clipboard	(EFocusTracker *focus_tracker);
+void		e_focus_tracker_paste_clipboard	(EFocusTracker *focus_tracker);
+void		e_focus_tracker_delete_selection(EFocusTracker *focus_tracker);
+void		e_focus_tracker_select_all	(EFocusTracker *focus_tracker);
+
+G_END_DECLS
+
+#endif /* E_FOCUS_TRACKER_H */