/**
* gtk_search_bar_handle_event:
* @bar: a #GtkSearchBar
* @event: a #GdkEvent containing key press events
*
* This function should be called when the top-level
* window which contains the search bar received a key event.
*
* If the key event is handled by the search bar, the bar will
* be shown, the entry populated with the entered text and %GDK_EVENT_STOP
* will be returned. The caller should ensure that events are
* not propagated further.
*
* If no entry has been connected to the search bar, using
* gtk_search_bar_connect_entry(), this function will return
* immediately with a warning.
*
* ## Showing the search bar on key presses
*
* |[<!-- language="C" -->
* static gboolean
* on_key_press_event (GtkWidget *widget,
* GdkEvent *event,
* gpointer user_data)
* {
* GtkSearchBar *bar = GTK_SEARCH_BAR (user_data);
* return gtk_search_bar_handle_event (bar, event);
* }
*
* g_signal_connect (window,
* "key-press-event",
* G_CALLBACK (on_key_press_event),
* search_bar);
* ]|
*
* Returns: %GDK_EVENT_STOP if the key press event resulted
* in text being entered in the search entry (and revealing
* the search bar if necessary), %GDK_EVENT_PROPAGATE otherwise.
*
* Since: 3.10
*/
gboolean
gtk_search_bar_handle_event (GtkSearchBar *bar,
GdkEvent *event)
{
GtkSearchBarPrivate *priv = gtk_search_bar_get_instance_private (bar);
guint keyval;
gboolean handled;
gboolean preedit_changed;
guint preedit_change_id;
gboolean res;
char *old_text, *new_text;
if (priv->entry == NULL)
{
g_warning ("The search bar does not have an entry connected to it. Call gtk_search_bar_connect_entry() to connect one.");
return GDK_EVENT_PROPAGATE;
}
/* Exit early if the search bar is already shown,
* the event doesn't contain a key press,
* or the event is a navigation or space bar key press
*/
if (priv->reveal_child ||
!gdk_event_get_keyval (event, &keyval) ||
is_keynav_event (event, keyval) ||
keyval == GDK_KEY_space ||
keyval == GDK_KEY_Menu)
return GDK_EVENT_PROPAGATE;
if (!gtk_widget_get_realized (priv->entry))
gtk_widget_realize (priv->entry);
handled = GDK_EVENT_PROPAGATE;
preedit_changed = FALSE;
preedit_change_id = g_signal_connect (priv->entry, "preedit-changed",
G_CALLBACK (preedit_changed_cb), &preedit_changed);
old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (priv->entry)));
res = gtk_widget_event (priv->entry, event);
new_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (priv->entry)));
g_signal_handler_disconnect (priv->entry, preedit_change_id);
if ((res && g_strcmp0 (new_text, old_text) != 0) || preedit_changed)
{
handled = GDK_EVENT_STOP;
gtk_revealer_set_reveal_child (GTK_REVEALER (priv->revealer), TRUE);
}
g_free (old_text);
g_free (new_text);
return handled;
}
static gboolean
window_keypress_handler (GtkWidget *window, GdkEvent *event, GsShell *shell)
{
GsShellPrivate *priv = gs_shell_get_instance_private (shell);
GtkWidget *entry;
guint keyval;
gboolean handled;
gboolean preedit_changed;
guint preedit_change_id;
gboolean res;
g_autofree gchar *old_text = NULL;
g_autofree gchar *new_text = NULL;
if (gs_shell_get_mode (shell) != GS_SHELL_MODE_OVERVIEW &&
gs_shell_get_mode (shell) != GS_SHELL_MODE_SEARCH)
return GDK_EVENT_PROPAGATE;
if (!gdk_event_get_keyval (event, &keyval) ||
is_keynav_event (event, keyval) ||
keyval == GDK_KEY_space ||
keyval == GDK_KEY_Menu)
return GDK_EVENT_PROPAGATE;
entry = GTK_WIDGET (gtk_builder_get_object (priv->builder, "entry_search"));
handled = GDK_EVENT_PROPAGATE;
preedit_changed = FALSE;
preedit_change_id = g_signal_connect (entry, "preedit-changed",
G_CALLBACK (preedit_changed_cb), &preedit_changed);
old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (entry)));
res = gtk_widget_event (entry, event);
new_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (entry)));
g_signal_handler_disconnect (entry, preedit_change_id);
if ((res && g_strcmp0 (new_text, old_text) != 0) ||
preedit_changed) {
gtk_entry_grab_focus_without_selecting (GTK_ENTRY (entry));
handled = GDK_EVENT_STOP;
}
return handled;
}
