[gtkhtml] Add gtk_html_unselect_all() for clearing selections.

[Matthew Barnes <mbarnes src gnome org>]

commit 7c293bcb2a018b777b005a4a6da676f1bf9596e4
Author: Matthew Barnes <mbarnes redhat com>
Date:   Thu Nov 12 16:07:18 2009 -0500

    Add gtk_html_unselect_all() for clearing selections.
    
    Also adds the corresponding command: "unselect-all"

 gtkhtml/gtkhtml-enums.h      |    4 +++-
 gtkhtml/gtkhtml-properties.c |    1 +
 gtkhtml/gtkhtml.c            |   17 ++++++++++++++++-
 gtkhtml/gtkhtml.h            |    1 +
 4 files changed, 21 insertions(+), 2 deletions(-)
---
diff --git a/gtkhtml/gtkhtml-enums.h b/gtkhtml/gtkhtml-enums.h
index 5e09d85..92d4c0f 100644
--- a/gtkhtml/gtkhtml-enums.h
+++ b/gtkhtml/gtkhtml-enums.h
@@ -228,7 +228,9 @@ typedef enum {
 
 	GTK_HTML_COMMAND_IS_SELECTION_ACTIVE,
 	GTK_HTML_COMMAND_SCROLL_FORWARD,
-	GTK_HTML_COMMAND_SCROLL_BACKWARD
+	GTK_HTML_COMMAND_SCROLL_BACKWARD,
+
+	GTK_HTML_COMMAND_UNSELECT_ALL
 } GtkHTMLCommandType;
 
 typedef enum {
diff --git a/gtkhtml/gtkhtml-properties.c b/gtkhtml/gtkhtml-properties.c
index 6f30f8b..e5dd39c 100644
--- a/gtkhtml/gtkhtml-properties.c
+++ b/gtkhtml/gtkhtml-properties.c
@@ -294,6 +294,7 @@ static GEnumValue _gtk_html_command_values[] = {
 	{ GTK_HTML_COMMAND_IS_SELECTION_ACTIVE, "GTK_HTML_COMMAND_IS_SELECTION_ACTIVE", "is-selection-active" },
 	{ GTK_HTML_COMMAND_SCROLL_FORWARD, "GTK_HTML_COMMAND_SCROLL_FORWARD", "scroll-forward" },
 	{ GTK_HTML_COMMAND_SCROLL_BACKWARD, "GTK_HTML_COMMAND_SCROLL_BACKWARD", "scroll-backward" },
+	{ GTK_HTML_COMMAND_UNSELECT_ALL, "GTK_HTML_COMMAND_UNSELECT_ALL", "unselect-all" },
 	{ 0, NULL, NULL }
 };
 
diff --git a/gtkhtml/gtkhtml.c b/gtkhtml/gtkhtml.c
index aad99da..87cb5ba 100644
--- a/gtkhtml/gtkhtml.c
+++ b/gtkhtml/gtkhtml.c
@@ -5165,10 +5165,12 @@ command (GtkHTML *html, GtkHTMLCommandType com_type)
 	case GTK_HTML_COMMAND_UNBLOCK_SELECTION:
 		html_engine_unblock_selection (html->engine);
 		break;
-
 	case GTK_HTML_COMMAND_IS_SELECTION_ACTIVE:
 		rv = html_engine_is_selection_active (html->engine);
 		break;
+	case GTK_HTML_COMMAND_UNSELECT_ALL:
+		gtk_html_unselect_all (html);
+		break;
 
 	default:
 		rv = FALSE;
@@ -5930,6 +5932,19 @@ gtk_html_select_all (GtkHTML *html)
 }
 
 void
+gtk_html_unselect_all (GtkHTML *html)
+{
+	HTMLEngine *e;
+
+	e = html->engine;
+
+	html_engine_unselect_all (e);
+
+	html_engine_update_selection_active_state (html->engine, html->priv->event_time);
+	update_primary_selection (html);
+}
+
+void
 gtk_html_api_set_language (GtkHTML *html)
 {
 	g_return_if_fail (GTK_IS_HTML (html));
diff --git a/gtkhtml/gtkhtml.h b/gtkhtml/gtkhtml.h
index 9f2c5d3..c400629 100644
--- a/gtkhtml/gtkhtml.h
+++ b/gtkhtml/gtkhtml.h
@@ -154,6 +154,7 @@ void                       gtk_html_select_line                   (GtkHTML
 void                       gtk_html_select_paragraph              (GtkHTML                   *html);
 void                       gtk_html_select_paragraph_extended     (GtkHTML                   *html);
 void                       gtk_html_select_all                    (GtkHTML                   *html);
+void                       gtk_html_unselect_all                  (GtkHTML                   *html);
 /* Loading.  */
 GtkHTMLStream             *gtk_html_begin                         (GtkHTML                   *html);
 GtkHTMLStream             *gtk_html_begin_full                    (GtkHTML                   *html,