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authorMarco Pesenti Gritti <mpeseng@src.gnome.org>2002-12-31 03:29:24 +0800
committerMarco Pesenti Gritti <mpeseng@src.gnome.org>2002-12-31 03:29:24 +0800
commit6876ede98282c7db318089bfefb292aa59e55d48 (patch)
tree76b23252d04da232d0ebf22e53bfe3e022686af9 /src/bookmarks/ephy-keywords-entry.c
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Initial revision
Diffstat (limited to 'src/bookmarks/ephy-keywords-entry.c')
-rw-r--r--src/bookmarks/ephy-keywords-entry.c286
1 files changed, 286 insertions, 0 deletions
diff --git a/src/bookmarks/ephy-keywords-entry.c b/src/bookmarks/ephy-keywords-entry.c
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+++ b/src/bookmarks/ephy-keywords-entry.c
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+/*
+ * Copyright (C) 2002 Marco Pesenti Gritti
+ *
+ * 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, 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 "ephy-keywords-entry.h"
+#include "ephy-marshal.h"
+#include "ephy-gobject-misc.h"
+
+#include <gdk/gdkkeysyms.h>
+
+//#define DEBUG_MSG(x) g_print x
+#define DEBUG_MSG(x)
+
+#define NOT_IMPLEMENTED g_warning ("not implemented: " G_STRLOC);
+
+/**
+ * Private data
+ */
+struct _EphyKeywordsEntryPrivate
+{
+ EphyBookmarks *bookmarks;
+};
+
+/**
+ * Private functions, only availble from this file
+ */
+static void ephy_keywords_entry_class_init (EphyKeywordsEntryClass *klass);
+static void ephy_keywords_entry_init (EphyKeywordsEntry *w);
+static void ephy_keywords_entry_finalize_impl (GObject *o);
+static gint ephy_keywords_entry_key_press (GtkWidget *widget,
+ GdkEventKey *event);
+
+enum
+{
+ KEYWORDS_CHANGED,
+ LAST_SIGNAL
+};
+
+static GObjectClass *parent_class = NULL;
+
+static guint keywords_entry_signals[LAST_SIGNAL] = { 0 };
+
+MAKE_GET_TYPE (ephy_keywords_entry, "EphyKeywordsEntry", EphyKeywordsEntry,
+ ephy_keywords_entry_class_init,
+ ephy_keywords_entry_init, GTK_TYPE_ENTRY);
+
+static void
+ephy_keywords_entry_class_init (EphyKeywordsEntryClass *class)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (class);
+ GtkWidgetClass *widget_class;
+
+ parent_class = g_type_class_peek_parent (class);
+ widget_class = (GtkWidgetClass*) class;
+
+ gobject_class->finalize = ephy_keywords_entry_finalize_impl;
+
+ widget_class->key_press_event = ephy_keywords_entry_key_press;
+
+ keywords_entry_signals[KEYWORDS_CHANGED] =
+ g_signal_new ("keywords_changed",
+ G_OBJECT_CLASS_TYPE (gobject_class),
+ G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (EphyKeywordsEntryClass, keywords_changed),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE,
+ 0);
+}
+
+static void
+try_to_expand_keyword (GtkEditable *editable)
+{
+ char *entry_text;
+ char *user_text;
+ const char *expand_text;
+ char *insert_text;
+ int user_text_length;
+ int expand_text_length;
+ int keyword_offset = 0;
+ int tmp;
+ EphyKeywordsEntry *entry = EPHY_KEYWORDS_ENTRY (editable);
+ EphyNode *node;
+
+ entry_text = gtk_editable_get_chars (editable, 0, -1);
+ g_return_if_fail (entry_text != NULL);
+
+ DEBUG_MSG (("Entry text \"%s\"\n", entry_text));
+
+ user_text = g_utf8_strrchr (entry_text, -1, ' ');
+
+ if (user_text)
+ {
+ user_text = g_utf8_find_next_char (user_text, NULL);
+ keyword_offset = g_utf8_pointer_to_offset
+ (entry_text, user_text);
+ }
+ else
+ {
+ user_text = entry_text;
+ }
+
+ DEBUG_MSG (("User text \"%s\"\n", user_text));
+
+ node = ephy_bookmarks_find_keyword (entry->priv->bookmarks,
+ user_text, TRUE);
+ if (node)
+ {
+ expand_text = ephy_node_get_property_string
+ (node, EPHY_NODE_KEYWORD_PROP_NAME);
+
+ DEBUG_MSG (("Expand text %s\n", expand_text));
+
+ expand_text_length = g_utf8_strlen (expand_text, -1);
+ user_text_length = g_utf8_strlen (user_text, -1);
+
+ insert_text = g_utf8_offset_to_pointer (expand_text, user_text_length);
+ gtk_editable_insert_text (editable,
+ insert_text,
+ g_utf8_strlen (insert_text, -1),
+ &tmp);
+ gtk_editable_select_region (editable, user_text_length + keyword_offset, -1);
+ }
+ else
+ {
+ DEBUG_MSG (("No expansion.\n"));
+ }
+
+ g_free (entry_text);
+}
+
+/* Until we have a more elegant solution, this is how we figure out if
+ * the GtkEntry inserted characters, assuming that the return value is
+ * TRUE indicating that the GtkEntry consumed the key event for some
+ * reason. This is a clone of code from GtkEntry.
+ */
+static gboolean
+entry_would_have_inserted_characters (const GdkEventKey *event)
+{
+ switch (event->keyval) {
+ case GDK_BackSpace:
+ case GDK_Clear:
+ case GDK_Insert:
+ case GDK_Delete:
+ case GDK_Home:
+ case GDK_End:
+ case GDK_Left:
+ case GDK_Right:
+ case GDK_Return:
+ return FALSE;
+ default:
+ if (event->keyval >= 0x20 && event->keyval <= 0xFF) {
+ if ((event->state & GDK_CONTROL_MASK) != 0) {
+ return FALSE;
+ }
+ if ((event->state & GDK_MOD1_MASK) != 0) {
+ return FALSE;
+ }
+ }
+ return event->length > 0;
+ }
+}
+
+static int
+get_editable_number_of_chars (GtkEditable *editable)
+{
+ char *text;
+ int length;
+
+ text = gtk_editable_get_chars (editable, 0, -1);
+ length = g_utf8_strlen (text, -1);
+ g_free (text);
+ return length;
+}
+
+static void
+set_position_and_selection_to_end (GtkEditable *editable)
+{
+ int end;
+
+ end = get_editable_number_of_chars (editable);
+ gtk_editable_select_region (editable, end, end);
+ gtk_editable_set_position (editable, end);
+}
+
+static gboolean
+position_and_selection_are_at_end (GtkEditable *editable)
+{
+ int end;
+ int start_sel, end_sel;
+
+ end = get_editable_number_of_chars (editable);
+ if (gtk_editable_get_selection_bounds (editable, &start_sel, &end_sel))
+ {
+ if (start_sel != end || end_sel != end)
+ {
+ return FALSE;
+ }
+ }
+ return gtk_editable_get_position (editable) == end;
+}
+
+static gint
+ephy_keywords_entry_key_press (GtkWidget *widget,
+ GdkEventKey *event)
+{
+ GtkEditable *editable;
+ GdkEventKey *keyevent;
+ EphyKeywordsEntry *entry;
+ gboolean result;
+
+ entry = EPHY_KEYWORDS_ENTRY (widget);
+ editable = GTK_EDITABLE (entry);
+ keyevent = (GdkEventKey *)event;
+
+ /* After typing the right arrow key we move the selection to
+ * the end, if we have a valid selection - since this is most
+ * likely an auto-completion. We ignore shift / control since
+ * they can validly be used to extend the selection.
+ */
+ if ((keyevent->keyval == GDK_Right || keyevent->keyval == GDK_End) &&
+ !(keyevent->state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK)) &&
+ gtk_editable_get_selection_bounds (editable, NULL, NULL))
+ {
+ set_position_and_selection_to_end (editable);
+ }
+
+ result = GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, event);
+
+ /* Only do expanding when we are typing at the end of the
+ * text.
+ */
+ if (entry_would_have_inserted_characters (event)
+ && position_and_selection_are_at_end (editable))
+ {
+ try_to_expand_keyword (editable);
+ }
+
+ g_signal_emit (G_OBJECT (entry), keywords_entry_signals[KEYWORDS_CHANGED], 0);
+
+ return result;
+}
+
+static void
+ephy_keywords_entry_init (EphyKeywordsEntry *w)
+{
+ w->priv = g_new0 (EphyKeywordsEntryPrivate, 1);
+ w->priv->bookmarks = NULL;
+}
+
+static void
+ephy_keywords_entry_finalize_impl (GObject *o)
+{
+ EphyKeywordsEntry *w = EPHY_KEYWORDS_ENTRY (o);
+ EphyKeywordsEntryPrivate *p = w->priv;
+
+ g_free (p);
+ G_OBJECT_CLASS (parent_class)->finalize (o);
+}
+
+GtkWidget *
+ephy_keywords_entry_new (void)
+{
+ return GTK_WIDGET (g_object_new (EPHY_TYPE_LOCATION_ENTRY, NULL));
+}
+
+void
+ephy_keywords_entry_set_bookmarks (EphyKeywordsEntry *w,
+ EphyBookmarks *bookmarks)
+{
+ w->priv->bookmarks = bookmarks;
+}