--- /dev/null
+/*
+ * Copyright (C) 2010 Collabora Ltd.
+ *
+ * This library 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 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Authors: Felix Kaser <felix.kaser@collabora.co.uk>
+ */
+
+#include <config.h>
+#include <string.h>
+
+#include <gtk/gtk.h>
+#include <gdk/gdkkeysyms.h>
+
+#include <libempathy/empathy-utils.h>
+
+#include "empathy-live-search.h"
+
+G_DEFINE_TYPE (EmpathyLiveSearch, empathy_live_search, GTK_TYPE_HBOX)
+
+#define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyLiveSearch)
+
+typedef struct
+{
+ GtkWidget *search_entry;
+ GtkWidget *hook_widget;
+
+ gunichar *text_stripped;
+} EmpathyLiveSearchPriv;
+
+enum
+{
+ PROP_0,
+ PROP_HOOK_WIDGET,
+ PROP_TEXT
+};
+
+static void live_search_hook_widget_destroy_cb (GtkObject *object,
+ gpointer user_data);
+
+/**
+ * stripped_char:
+ *
+ * Returns a stripped version of @ch, removing any case, accentuation
+ * mark, or any special mark on it.
+ **/
+static gunichar
+stripped_char (gunichar ch)
+{
+ gunichar retval = 0;
+ GUnicodeType utype;
+ gunichar *decomp;
+ gsize dlen;
+
+ utype = g_unichar_type (ch);
+
+ switch (utype)
+ {
+ case G_UNICODE_CONTROL:
+ case G_UNICODE_FORMAT:
+ case G_UNICODE_UNASSIGNED:
+ case G_UNICODE_COMBINING_MARK:
+ /* Ignore those */
+ break;
+ default:
+ ch = g_unichar_tolower (ch);
+ decomp = g_unicode_canonical_decomposition (ch, &dlen);
+ if (decomp != NULL)
+ {
+ retval = decomp[0];
+ g_free (decomp);
+ }
+ }
+
+ return retval;
+}
+
+static gunichar *
+strip_utf8_string (const gchar *string)
+{
+ gunichar *ret;
+ gint ret_len;
+ const gchar *p;
+
+ if (EMP_STR_EMPTY (string))
+ return NULL;
+
+ ret = g_malloc (sizeof (gunichar) * (strlen (string) + 1));
+ ret_len = 0;
+
+ for (p = string; *p != '\0'; p = g_utf8_next_char (p))
+ {
+ gunichar sc;
+
+ sc = stripped_char (g_utf8_get_char (p));
+ if (sc != 0)
+ ret[ret_len++] = sc;
+ }
+
+ ret[ret_len] = 0;
+
+ return ret;
+}
+
+static gboolean
+live_search_entry_key_pressed_cb (GtkEntry *entry,
+ GdkEventKey *event,
+ gpointer user_data)
+{
+ EmpathyLiveSearch *self = EMPATHY_LIVE_SEARCH (user_data);
+
+ /* if esc key pressed, hide the search */
+ if (event->keyval == GDK_Escape)
+ {
+ gtk_widget_hide (GTK_WIDGET (self));
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static void
+live_search_text_changed (GtkEntry *entry,
+ gpointer user_data)
+{
+ EmpathyLiveSearch *self = EMPATHY_LIVE_SEARCH (user_data);
+ EmpathyLiveSearchPriv *priv = GET_PRIV (self);
+ const gchar *text;
+
+ text = gtk_entry_get_text (entry);
+
+ g_free (priv->text_stripped);
+ priv->text_stripped = strip_utf8_string (text);
+ g_object_notify (G_OBJECT (self), "text");
+
+ if (g_utf8_strlen (text, -1) < 1)
+ gtk_widget_hide (GTK_WIDGET (self));
+ else
+ gtk_widget_show (GTK_WIDGET (self));
+}
+
+static void
+live_search_close_pressed (GtkEntry *entry,
+ GtkEntryIconPosition icon_pos,
+ GdkEvent *event,
+ gpointer user_data)
+{
+ EmpathyLiveSearch *self = EMPATHY_LIVE_SEARCH (user_data);
+
+ gtk_widget_hide (GTK_WIDGET (self));
+}
+
+static gboolean
+live_search_key_press_event_cb (GtkWidget *widget,
+ GdkEventKey *event,
+ gpointer user_data)
+{
+ EmpathyLiveSearch *self = EMPATHY_LIVE_SEARCH (user_data);
+ EmpathyLiveSearchPriv *priv = GET_PRIV (self);
+ GdkEvent *new_event;
+ gboolean ret;
+
+ /* dont forward this event to the entry, else the event is consumed by the
+ * entry and does not close the window */
+ if (!gtk_widget_get_visible (GTK_WIDGET (self)) &&
+ event->keyval == GDK_Escape)
+ return FALSE;
+
+ /* do not show the search if CTRL and/or ALT are pressed with a key
+ * this is needed, because otherwise the CTRL + F accel would not work,
+ * because the entry consumes it */
+ if (event->state & (GDK_MOD1_MASK | GDK_CONTROL_MASK) ||
+ event->keyval == GDK_Control_L ||
+ event->keyval == GDK_Control_R)
+ return FALSE;
+
+ /* realize the widget if it is not realized yet */
+ gtk_widget_realize (priv->search_entry);
+ if (!gtk_widget_has_focus (priv->search_entry))
+ {
+ gtk_widget_grab_focus (priv->search_entry);
+ gtk_editable_set_position (GTK_EDITABLE (priv->search_entry), -1);
+ }
+
+ /* forward the event to the search entry */
+ new_event = gdk_event_copy ((GdkEvent *) event);
+ ret = gtk_widget_event (priv->search_entry, new_event);
+ gdk_event_free (new_event);
+
+ return ret;
+}
+
+static void
+live_search_release_hook_widget (EmpathyLiveSearch *self)
+{
+ EmpathyLiveSearchPriv *priv = GET_PRIV (self);
+
+ /* remove old handlers if old source was not null */
+ if (priv->hook_widget != NULL)
+ {
+ g_signal_handlers_disconnect_by_func (priv->hook_widget,
+ live_search_key_press_event_cb, self);
+ g_signal_handlers_disconnect_by_func (priv->hook_widget,
+ live_search_hook_widget_destroy_cb, self);
+ g_object_unref (priv->hook_widget);
+ priv->hook_widget = NULL;
+ }
+}
+
+static void
+live_search_hook_widget_destroy_cb (GtkObject *object,
+ gpointer user_data)
+{
+ EmpathyLiveSearch *self = EMPATHY_LIVE_SEARCH (user_data);
+
+ /* unref the hook widget and hide search */
+ live_search_release_hook_widget (self);
+ gtk_widget_hide (GTK_WIDGET (self));
+}
+
+static void
+live_search_dispose (GObject *obj)
+{
+ EmpathyLiveSearch *self = EMPATHY_LIVE_SEARCH (obj);
+
+ live_search_release_hook_widget (self);
+
+ if (G_OBJECT_CLASS (empathy_live_search_parent_class)->dispose != NULL)
+ G_OBJECT_CLASS (empathy_live_search_parent_class)->dispose (obj);
+}
+
+static void
+live_search_finalize (GObject *obj)
+{
+ EmpathyLiveSearch *self = EMPATHY_LIVE_SEARCH (obj);
+ EmpathyLiveSearchPriv *priv = GET_PRIV (self);
+
+ g_free (priv->text_stripped);
+
+ if (G_OBJECT_CLASS (empathy_live_search_parent_class)->finalize != NULL)
+ G_OBJECT_CLASS (empathy_live_search_parent_class)->finalize (obj);
+}
+
+static void
+live_search_get_property (GObject *object,
+ guint param_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ EmpathyLiveSearch *self = EMPATHY_LIVE_SEARCH (object);
+
+ switch (param_id)
+ {
+ case PROP_HOOK_WIDGET:
+ g_value_set_object (value, empathy_live_search_get_hook_widget (self));
+ break;
+ case PROP_TEXT:
+ g_value_set_string (value, empathy_live_search_get_text (self));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
+ break;
+ }
+}
+
+static void
+live_search_set_property (GObject *object,
+ guint param_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ EmpathyLiveSearch *self = EMPATHY_LIVE_SEARCH (object);
+
+ switch (param_id) {
+ case PROP_HOOK_WIDGET:
+ empathy_live_search_set_hook_widget (self, g_value_get_object (value));
+ break;
+ case PROP_TEXT:
+ empathy_live_search_set_text (self, g_value_get_string (value));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
+ break;
+ };
+}
+
+static void
+live_search_hide (GtkWidget *widget)
+{
+ EmpathyLiveSearch *self = EMPATHY_LIVE_SEARCH (widget);
+ EmpathyLiveSearchPriv *priv = GET_PRIV (self);
+
+ GTK_WIDGET_CLASS (empathy_live_search_parent_class)->hide (widget);
+
+ gtk_entry_set_text (GTK_ENTRY (priv->search_entry), "");
+ gtk_widget_grab_focus (priv->hook_widget);
+}
+
+static void
+live_search_show (GtkWidget *widget)
+{
+ EmpathyLiveSearch *self = EMPATHY_LIVE_SEARCH (widget);
+ EmpathyLiveSearchPriv *priv = GET_PRIV (self);
+
+ if (!gtk_widget_has_focus (priv->search_entry))
+ gtk_widget_grab_focus (priv->search_entry);
+
+ GTK_WIDGET_CLASS (empathy_live_search_parent_class)->show (widget);
+}
+
+static void
+live_search_grab_focus (GtkWidget *widget)
+{
+ EmpathyLiveSearch *self = EMPATHY_LIVE_SEARCH (widget);
+ EmpathyLiveSearchPriv *priv = GET_PRIV (self);
+
+ if (!gtk_widget_has_focus (priv->search_entry))
+ gtk_widget_grab_focus (priv->search_entry);
+}
+
+static void
+empathy_live_search_class_init (EmpathyLiveSearchClass *klass)
+{
+ GObjectClass *object_class = (GObjectClass *) klass;
+ GtkWidgetClass *widget_class = (GtkWidgetClass *) klass;
+ GParamSpec *param_spec;
+
+ object_class->finalize = live_search_finalize;
+ object_class->dispose = live_search_dispose;
+ object_class->get_property = live_search_get_property;
+ object_class->set_property = live_search_set_property;
+
+ widget_class->hide = live_search_hide;
+ widget_class->show = live_search_show;
+ widget_class->grab_focus = live_search_grab_focus;
+
+ param_spec = g_param_spec_object ("hook-widget", "Live Searchs Hook Widget",
+ "The live search catches key-press-events on this widget",
+ GTK_TYPE_WIDGET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
+ g_object_class_install_property (object_class, PROP_HOOK_WIDGET,
+ param_spec);
+
+ param_spec = g_param_spec_string ("text", "Live Search Text",
+ "The text of the live search entry",
+ "", G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
+ g_object_class_install_property (object_class, PROP_TEXT, param_spec);
+
+ g_type_class_add_private (klass, sizeof (EmpathyLiveSearchPriv));
+}
+
+static void
+empathy_live_search_init (EmpathyLiveSearch *self)
+{
+ EmpathyLiveSearchPriv *priv =
+ G_TYPE_INSTANCE_GET_PRIVATE ((self), EMPATHY_TYPE_LIVE_SEARCH,
+ EmpathyLiveSearchPriv);
+
+ gtk_widget_set_no_show_all (GTK_WIDGET (self), TRUE);
+
+ priv->search_entry = gtk_entry_new ();
+ gtk_entry_set_icon_from_stock (GTK_ENTRY (priv->search_entry),
+ GTK_ENTRY_ICON_SECONDARY, GTK_STOCK_CLOSE);
+ gtk_entry_set_icon_activatable (GTK_ENTRY (priv->search_entry),
+ GTK_ENTRY_ICON_SECONDARY, TRUE);
+ gtk_entry_set_icon_sensitive (GTK_ENTRY (priv->search_entry),
+ GTK_ENTRY_ICON_SECONDARY, TRUE);
+ gtk_widget_show (priv->search_entry);
+
+ gtk_box_pack_start (GTK_BOX (self), priv->search_entry, TRUE, TRUE, 0);
+
+ g_signal_connect (priv->search_entry, "icon_release",
+ G_CALLBACK (live_search_close_pressed), self);
+ g_signal_connect (priv->search_entry, "changed",
+ G_CALLBACK (live_search_text_changed), self);
+ g_signal_connect (priv->search_entry, "key-press-event",
+ G_CALLBACK (live_search_entry_key_pressed_cb), self);
+
+ priv->hook_widget = NULL;
+
+ self->priv = priv;
+}
+
+GtkWidget *
+empathy_live_search_new (GtkWidget *hook)
+{
+ g_return_val_if_fail (hook == NULL || GTK_IS_WIDGET (hook), NULL);
+
+ return g_object_new (EMPATHY_TYPE_LIVE_SEARCH,
+ "hook-widget", hook,
+ NULL);
+}
+
+/* public methods */
+
+GtkWidget *
+empathy_live_search_get_hook_widget (EmpathyLiveSearch *self)
+{
+ EmpathyLiveSearchPriv *priv = GET_PRIV (self);
+
+ g_return_val_if_fail (EMPATHY_IS_LIVE_SEARCH (self), NULL);
+
+ return priv->hook_widget;
+}
+
+void
+empathy_live_search_set_hook_widget (EmpathyLiveSearch *self,
+ GtkWidget *hook)
+{
+ EmpathyLiveSearchPriv *priv;
+
+ g_return_if_fail (EMPATHY_IS_LIVE_SEARCH (self));
+ g_return_if_fail (hook == NULL || GTK_IS_WIDGET (hook));
+
+ priv = GET_PRIV (self);
+
+ /* release the actual widget */
+ live_search_release_hook_widget (self);
+
+ /* connect handlers if new source is not null */
+ if (hook != NULL)
+ {
+ priv->hook_widget = g_object_ref (hook);
+ g_signal_connect (priv->hook_widget, "key-press-event",
+ G_CALLBACK (live_search_key_press_event_cb),
+ self);
+ g_signal_connect (priv->hook_widget, "destroy",
+ G_CALLBACK (live_search_hook_widget_destroy_cb),
+ self);
+ }
+}
+
+const gchar *
+empathy_live_search_get_text (EmpathyLiveSearch *self)
+{
+ EmpathyLiveSearchPriv *priv = GET_PRIV (self);
+
+ g_return_val_if_fail (EMPATHY_IS_LIVE_SEARCH (self), NULL);
+
+ return gtk_entry_get_text (GTK_ENTRY (priv->search_entry));
+}
+
+void
+empathy_live_search_set_text (EmpathyLiveSearch *self,
+ const gchar *text)
+{
+ EmpathyLiveSearchPriv *priv = GET_PRIV (self);
+
+ g_return_if_fail (EMPATHY_IS_LIVE_SEARCH (self));
+ g_return_if_fail (text != NULL);
+
+ gtk_entry_set_text (GTK_ENTRY (priv->search_entry), text);
+}
+
+static gboolean
+live_search_match_string (const gchar *string,
+ const gunichar *prefix)
+{
+ const gchar *p;
+
+ if (prefix == NULL || prefix[0] == 0)
+ return TRUE;
+
+ if (EMP_STR_EMPTY (string))
+ return FALSE;
+
+ for (p = string; *p != '\0'; p = g_utf8_next_char (p))
+ {
+ guint i = 0;
+
+ /* Search the start of the word (skip non alpha-num chars) */
+ while (*p != '\0' && !g_unichar_isalnum (g_utf8_get_char (p)))
+ p = g_utf8_next_char (p);
+
+ /* Check if this word match prefix */
+ while (*p != '\0')
+ {
+ gunichar sc;
+
+ sc = stripped_char (g_utf8_get_char (p));
+ if (sc != 0)
+ {
+ /* If the char does not match, stop */
+ if (sc != prefix[i])
+ break;
+
+ /* The char matched. If it was the last of prefix, stop */
+ if (prefix[++i] == 0)
+ return TRUE;
+ }
+
+ p = g_utf8_next_char (p);
+ }
+
+ /* This word didn't match, go to next one (skip alpha-num chars) */
+ while (*p != '\0' && g_unichar_isalnum (g_utf8_get_char (p)))
+ p = g_utf8_next_char (p);
+
+ if (*p == '\0')
+ break;
+ }
+
+ return FALSE;
+}
+
+/**
+ * empathy_live_search_match:
+ * @self: a #EmpathyLiveSearch
+ * @string: a string where to search, must be valid UTF-8.
+ *
+ * Search if one of the words in @string string starts with the current text
+ * of @self.
+ *
+ * Searching for "aba" in "Abasto" will match, searching in "Moraba" will not,
+ * and searching in "A tool (abacus)" will do.
+ *
+ * The match is not case-sensitive, and regardless of the accentuation marks.
+ *
+ * Returns: %TRUE if a match is found, %FALSE otherwise.
+ *
+ **/
+gboolean
+empathy_live_search_match (EmpathyLiveSearch *self,
+ const gchar *string)
+{
+ EmpathyLiveSearchPriv *priv;
+
+ g_return_val_if_fail (EMPATHY_IS_LIVE_SEARCH (self), FALSE);
+
+ priv = GET_PRIV (self);
+
+ return live_search_match_string (string, priv->text_stripped);
+}
+
+gboolean
+empathy_live_search_match_string (const gchar *string,
+ const gchar *prefix)
+{
+ gunichar *stripped;
+ gboolean match;
+
+ stripped = strip_utf8_string (prefix);
+ match = live_search_match_string (string, stripped);
+ g_free (stripped);
+
+ return match;
+}
+
projects / empathy.git / commitdiff