/* GTK - The GIMP Toolkit
* Copyright ( C ) 2013 Red Hat , Inc .
*
* Authors :
* - Bastien Nocera < bnocera @ redhat . com >
*
* 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 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 , see < http : //www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK + Team and others 2013 . See the AUTHORS
* file for a list of people on the GTK + Team . See the ChangeLog
* files for a list of changes . These files are distributed with
* GTK + at ftp : //ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gtksearchbar.h"
#include "gtkbinlayout.h"
#include "gtkbuildable.h"
#include "gtkbuilderprivate.h"
#include "gtkbutton.h"
#include "gtkcenterbox.h"
#include "gtkentryprivate.h"
#include "gtkeventcontrollerkey.h"
#include "gtkprivate.h"
#include "gtkrevealer.h"
#include "gtksearchentryprivate.h"
#include "gtksnapshot.h"
#include "gtkwidgetprivate.h"
/**
* GtkSearchBar :
*
* Reveals a search entry when search is started .
*
* < picture >
* < source srcset = " search - bar - dark . png " media = " ( prefers - color - scheme : dark ) " >
* < img alt = " An example GtkSearchBar " src = " search - bar . png " >
* < / picture >
*
* It can also contain additional widgets , such as drop - down menus ,
* or buttons . The search bar would appear when a search is started
* through typing on the keyboard , or the application ’ s search mode
* is toggled on .
*
* For keyboard presses to start a search , the search bar must be told
* of a widget to capture key events from through
* [ method @ Gtk . SearchBar . set_key_capture_widget ] . This widget will
* typically be the top - level window , or a parent container of the
* search bar . Common shortcuts such as Ctrl + F should be handled as an
* application action , or through the menu items .
*
* You will also need to tell the search bar about which entry you
* are using as your search entry using [ method @ Gtk . SearchBar . connect_entry ] .
*
* # # Creating a search bar
*
* The following example shows you how to create a more complex search
* entry .
*
* [ A simple example ] ( https : //gitlab.gnome.org/GNOME/gtk/tree/main/examples/search-bar.c)
*
* # Shortcuts and Gestures
*
* ` GtkSearchBar ` supports the following keyboard shortcuts :
*
* - < kbd > Escape < / kbd > hides the search bar .
*
* # CSS nodes
*
* ` ` `
* searchbar
* ╰ ─ ─ revealer
* ╰ ─ ─ box
* ├ ─ ─ [ child ]
* ╰ ─ ─ [ button . close ]
* ` ` `
*
* ` GtkSearchBar ` has a main CSS node with name searchbar . It has a child
* node with name revealer that contains a node with name box . The box node
* contains both the CSS node of the child widget as well as an optional button
* node which gets the . close style class applied .
*
* # Accessibility
*
* ` GtkSearchBar ` uses the [ enum @ Gtk . AccessibleRole . search ] role .
*/
typedef struct _GtkSearchBarClass GtkSearchBarClass;
struct _GtkSearchBar
{
GtkWidget parent;
GtkWidget *child;
GtkWidget *revealer;
GtkWidget *box_center;
GtkWidget *close_button;
GtkWidget *entry;
gboolean reveal_child;
GtkWidget *capture_widget;
GtkEventController *capture_widget_controller;
};
struct _GtkSearchBarClass
{
GtkWidgetClass parent_class;
};
static void gtk_search_bar_buildable_iface_init (GtkBuildableIface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkSearchBar, gtk_search_bar, GTK_TYPE_WIDGET,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_search_bar_buildable_iface_init))
enum {
PROP_0,
PROP_SEARCH_MODE_ENABLED,
PROP_SHOW_CLOSE_BUTTON,
PROP_CHILD,
PROP_KEY_CAPTURE_WIDGET,
LAST_PROPERTY
};
static GParamSpec *widget_props[LAST_PROPERTY] = { NULL, };
static GtkBuildableIface *parent_buildable_iface;
static void
gtk_search_bar_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *type)
{
if (GTK_IS_WIDGET (child))
{
gtk_buildable_child_deprecation_warning (buildable, builder, NULL, "child" );
gtk_search_bar_set_child (GTK_SEARCH_BAR (buildable), GTK_WIDGET (child));
}
else
{
parent_buildable_iface->add_child (buildable, builder, child, type);
}
}
static void
gtk_search_bar_buildable_iface_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->add_child = gtk_search_bar_buildable_add_child;
}
static void
stop_search_cb (GtkWidget *entry,
GtkSearchBar *bar)
{
gtk_revealer_set_reveal_child (GTK_REVEALER (bar->revealer), FALSE );
}
static void
reveal_child_changed_cb (GObject *object,
GParamSpec *pspec,
GtkSearchBar *bar)
{
gboolean reveal_child;
g_object_get (object, "reveal-child" , &reveal_child, NULL);
if (reveal_child == bar->reveal_child)
return ;
bar->reveal_child = reveal_child;
if (bar->entry)
{
if (reveal_child && GTK_IS_ENTRY (bar->entry))
gtk_entry_grab_focus_without_selecting (GTK_ENTRY (bar->entry));
else if (reveal_child && GTK_IS_SEARCH_ENTRY (bar->entry))
gtk_widget_grab_focus (bar->entry);
else
gtk_editable_set_text (GTK_EDITABLE (bar->entry), "" );
}
g_object_notify_by_pspec (G_OBJECT (bar), widget_props[PROP_SEARCH_MODE_ENABLED]);
}
static void
close_button_clicked_cb (GtkWidget *button,
GtkSearchBar *bar)
{
gtk_revealer_set_reveal_child (GTK_REVEALER (bar->revealer), FALSE );
}
static void
input_intercepted_cb (GtkEditable *editable,
GtkSearchBar *bar)
{
gtk_revealer_set_reveal_child (GTK_REVEALER (bar->revealer), TRUE );
if (GTK_IS_ENTRY (editable))
gtk_entry_grab_focus_without_selecting (GTK_ENTRY (editable));
else if (GTK_IS_SEARCH_ENTRY (editable))
gtk_widget_grab_focus (GTK_WIDGET (editable));
}
static void
gtk_search_bar_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkSearchBar *bar = GTK_SEARCH_BAR (object);
switch (prop_id)
{
case PROP_SEARCH_MODE_ENABLED:
gtk_search_bar_set_search_mode (bar, g_value_get_boolean (value));
break ;
case PROP_SHOW_CLOSE_BUTTON:
gtk_search_bar_set_show_close_button (bar, g_value_get_boolean (value));
break ;
case PROP_CHILD:
gtk_search_bar_set_child (bar, g_value_get_object (value));
break ;
case PROP_KEY_CAPTURE_WIDGET:
gtk_search_bar_set_key_capture_widget (bar, g_value_get_object (value));
break ;
default :
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break ;
}
}
static void
gtk_search_bar_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkSearchBar *bar = GTK_SEARCH_BAR (object);
switch (prop_id)
{
case PROP_SEARCH_MODE_ENABLED:
g_value_set_boolean (value, gtk_search_bar_get_search_mode (bar));
break ;
case PROP_SHOW_CLOSE_BUTTON:
g_value_set_boolean (value, gtk_search_bar_get_show_close_button (bar));
break ;
case PROP_CHILD:
g_value_set_object (value, gtk_search_bar_get_child (bar));
break ;
case PROP_KEY_CAPTURE_WIDGET:
g_value_set_object (value, gtk_search_bar_get_key_capture_widget (bar));
break ;
default :
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break ;
}
}
static void gtk_search_bar_set_entry (GtkSearchBar *bar,
GtkEditable *editable);
static void
gtk_search_bar_dispose (GObject *object)
{
GtkSearchBar *bar = GTK_SEARCH_BAR (object);
gtk_search_bar_set_key_capture_widget (bar, NULL);
gtk_search_bar_set_entry (bar, NULL);
g_clear_pointer (&bar->revealer, gtk_widget_unparent);
bar->child = NULL;
bar->box_center = NULL;
bar->close_button = NULL;
G_OBJECT_CLASS (gtk_search_bar_parent_class)->dispose (object);
}
static void
gtk_search_bar_compute_expand (GtkWidget *widget,
gboolean *hexpand,
gboolean *vexpand)
{
GtkSearchBar *bar = GTK_SEARCH_BAR (widget);
if (bar->child)
{
*hexpand = gtk_widget_compute_expand (bar->child, GTK_ORIENTATION_HORIZONTAL);
*vexpand = gtk_widget_compute_expand (bar->child, GTK_ORIENTATION_VERTICAL);
}
else
{
*hexpand = FALSE ;
*vexpand = FALSE ;
}
}
static void
gtk_search_bar_class_init (GtkSearchBarClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->dispose = gtk_search_bar_dispose;
object_class->set_property = gtk_search_bar_set_property;
object_class->get_property = gtk_search_bar_get_property;
widget_class->compute_expand = gtk_search_bar_compute_expand;
widget_class->focus = gtk_widget_focus_child;
/**
* GtkSearchBar : search - mode - enabled : ( getter get_search_mode ) ( setter set_search_mode )
*
* Whether the search mode is on and the search bar shown .
*/
widget_props[PROP_SEARCH_MODE_ENABLED] = g_param_spec_boolean ("search-mode-enabled" , NULL, NULL,
FALSE ,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkSearchBar : show - close - button :
*
* Whether to show the close button in the search bar .
*/
widget_props[PROP_SHOW_CLOSE_BUTTON] = g_param_spec_boolean ("show-close-button" , NULL, NULL,
FALSE ,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_CONSTRUCT | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkSearchBar : child :
*
* The child widget .
*/
widget_props[PROP_CHILD] = g_param_spec_object ("child" , NULL, NULL,
GTK_TYPE_WIDGET,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_CONSTRUCT | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkSearchBar : key - capture - widget :
*
* The key capture widget .
*/
widget_props[PROP_KEY_CAPTURE_WIDGET]
= g_param_spec_object ("key-capture-widget" , NULL, NULL,
GTK_TYPE_WIDGET,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_CONSTRUCT | G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (object_class, LAST_PROPERTY, widget_props);
gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
gtk_widget_class_set_css_name (widget_class, I_("searchbar" ));
gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_SEARCH);
}
static void
gtk_search_bar_init (GtkSearchBar *bar)
{
bar->revealer = gtk_revealer_new ();
gtk_revealer_set_reveal_child (GTK_REVEALER (bar->revealer), FALSE );
gtk_widget_set_hexpand (bar->revealer, TRUE );
gtk_widget_set_parent (bar->revealer, GTK_WIDGET (bar));
bar->box_center = gtk_center_box_new ();
gtk_widget_set_hexpand (bar->box_center, TRUE );
bar->close_button = gtk_button_new_from_icon_name ("window-close-symbolic" );
gtk_widget_set_valign (bar->close_button, GTK_ALIGN_CENTER);
gtk_widget_add_css_class (bar->close_button, "close" );
gtk_center_box_set_end_widget (GTK_CENTER_BOX (bar->box_center), bar->close_button);
gtk_widget_set_visible (bar->close_button, FALSE );
gtk_revealer_set_child (GTK_REVEALER (bar->revealer), bar->box_center);
g_signal_connect (bar->revealer, "notify::reveal-child" ,
G_CALLBACK (reveal_child_changed_cb), bar);
g_signal_connect (bar->close_button, "clicked" ,
G_CALLBACK (close_button_clicked_cb), bar);
}
/**
* gtk_search_bar_new :
*
* Creates a ` GtkSearchBar ` .
*
* You will need to tell it about which widget is going to be your text
* entry using [ method @ Gtk . SearchBar . connect_entry ] .
*
* Returns : a new ` GtkSearchBar `
*/
GtkWidget *
gtk_search_bar_new (void )
{
return g_object_new (GTK_TYPE_SEARCH_BAR, NULL);
}
static void
gtk_search_bar_set_entry (GtkSearchBar *bar,
GtkEditable *entry)
{
if (bar->entry != NULL)
{
if (GTK_IS_SEARCH_ENTRY (bar->entry))
g_signal_handlers_disconnect_by_func (bar->entry, stop_search_cb, bar);
g_signal_handlers_disconnect_by_func (bar->entry, input_intercepted_cb, bar);
g_object_remove_weak_pointer (G_OBJECT (bar->entry), (gpointer *) &bar->entry);
}
bar->entry = GTK_WIDGET (entry);
if (bar->entry != NULL)
{
g_object_add_weak_pointer (G_OBJECT (bar->entry), (gpointer *) &bar->entry);
g_signal_connect (bar->entry, "input-intercepted" ,
G_CALLBACK (input_intercepted_cb), bar);
if (GTK_IS_SEARCH_ENTRY (bar->entry))
{
g_signal_connect (bar->entry, "stop-search" ,
G_CALLBACK (stop_search_cb), bar);
}
}
}
/**
* gtk_search_bar_connect_entry :
* @ bar : a ` GtkSearchBar `
* @ entry : a ` GtkEditable `
*
* Connects the ` GtkEditable ` widget passed as the one to be used in
* this search bar .
*
* The entry should be a descendant of the search bar . Calling this
* function manually is only required if the entry isn ’ t the direct
* child of the search bar ( as in our main example ) .
*/
void
gtk_search_bar_connect_entry (GtkSearchBar *bar,
GtkEditable *entry)
{
g_return_if_fail (GTK_IS_SEARCH_BAR (bar));
g_return_if_fail (entry == NULL || GTK_IS_EDITABLE (entry));
gtk_search_bar_set_entry (bar, entry);
}
/**
* gtk_search_bar_get_search_mode : ( get - property search - mode - enabled )
* @ bar : a ` GtkSearchBar `
*
* Returns whether the search mode is on or off .
*
* Returns : whether search mode is toggled on
*/
gboolean
gtk_search_bar_get_search_mode (GtkSearchBar *bar)
{
g_return_val_if_fail (GTK_IS_SEARCH_BAR (bar), FALSE );
return bar->reveal_child;
}
/**
* gtk_search_bar_set_search_mode : ( set - property search - mode - enabled )
* @ bar : a ` GtkSearchBar `
* @ search_mode : the new state of the search mode
*
* Switches the search mode on or off .
*/
void
gtk_search_bar_set_search_mode (GtkSearchBar *bar,
gboolean search_mode)
{
g_return_if_fail (GTK_IS_SEARCH_BAR (bar));
gtk_revealer_set_reveal_child (GTK_REVEALER (bar->revealer), search_mode);
}
/**
* gtk_search_bar_get_show_close_button :
* @ bar : a ` GtkSearchBar `
*
* Returns whether the close button is shown .
*
* Returns : whether the close button is shown
*/
gboolean
gtk_search_bar_get_show_close_button (GtkSearchBar *bar)
{
g_return_val_if_fail (GTK_IS_SEARCH_BAR (bar), FALSE );
return gtk_widget_get_visible (bar->close_button);
}
/**
* gtk_search_bar_set_show_close_button :
* @ bar : a ` GtkSearchBar `
* @ visible : whether the close button will be shown or not
*
* Shows or hides the close button .
*
* Applications that already have a “ search ” toggle button should not
* show a close button in their search bar , as it duplicates the role
* of the toggle button .
*/
void
gtk_search_bar_set_show_close_button (GtkSearchBar *bar,
gboolean visible)
{
g_return_if_fail (GTK_IS_SEARCH_BAR (bar));
visible = visible != FALSE ;
if (gtk_widget_get_visible (bar->close_button) != visible)
{
gtk_widget_set_visible (bar->close_button, visible);
g_object_notify_by_pspec (G_OBJECT (bar), widget_props[PROP_SHOW_CLOSE_BUTTON]);
}
}
/**
* gtk_search_bar_set_key_capture_widget :
* @ bar : a ` GtkSearchBar `
* @ widget : ( nullable ) ( transfer none ) : a ` GtkWidget `
*
* Sets @ widget as the widget that @ bar will capture key events
* from .
*
* If key events are handled by the search bar , the bar will
* be shown , and the entry populated with the entered text .
*
* Note that despite the name of this function , the events
* are only ' captured ' in the bubble phase , which means that
* editable child widgets of @ widget will receive text input
* before it gets captured . If that is not desired , you can
* capture and forward the events yourself with
* [ method @ Gtk . EventControllerKey . forward ] .
*/
void
gtk_search_bar_set_key_capture_widget (GtkSearchBar *bar,
GtkWidget *widget)
{
g_return_if_fail (GTK_IS_SEARCH_BAR (bar));
g_return_if_fail (!widget || GTK_IS_WIDGET (widget));
if (bar->capture_widget == widget)
return ;
if (bar->capture_widget)
{
g_object_remove_weak_pointer (G_OBJECT (bar->capture_widget),
(gpointer *) &bar->capture_widget);
}
bar->capture_widget = widget;
if (bar->entry)
gtk_editable_set_input_interceptor (GTK_EDITABLE (bar->entry), bar->capture_widget);
if (widget)
{
g_object_add_weak_pointer (G_OBJECT (bar->capture_widget),
(gpointer *) &bar->capture_widget);
}
g_object_notify_by_pspec (G_OBJECT (bar), widget_props[PROP_KEY_CAPTURE_WIDGET]);
}
/**
* gtk_search_bar_get_key_capture_widget :
* @ bar : a ` GtkSearchBar `
*
* Gets the widget that @ bar is capturing key events from .
*
* Returns : ( nullable ) ( transfer none ) : The key capture widget .
**/
GtkWidget *
gtk_search_bar_get_key_capture_widget (GtkSearchBar *bar)
{
g_return_val_if_fail (GTK_IS_SEARCH_BAR (bar), NULL);
return bar->capture_widget;
}
/**
* gtk_search_bar_set_child :
* @ bar : a ` GtkSearchBar `
* @ child : ( nullable ) : the child widget
*
* Sets the child widget of @ bar .
*/
void
gtk_search_bar_set_child (GtkSearchBar *bar,
GtkWidget *child)
{
g_return_if_fail (GTK_IS_SEARCH_BAR (bar));
g_return_if_fail (child == NULL || bar->child == child || gtk_widget_get_parent (child) == NULL);
if (bar->child == child)
return ;
if (bar->child)
{
if (GTK_IS_EDITABLE (bar->child))
gtk_search_bar_connect_entry (bar, NULL);
gtk_center_box_set_center_widget (GTK_CENTER_BOX (bar->box_center), NULL);
}
bar->child = child;
if (bar->child)
{
gtk_center_box_set_center_widget (GTK_CENTER_BOX (bar->box_center), child);
if (GTK_IS_EDITABLE (child))
gtk_search_bar_connect_entry (bar, GTK_EDITABLE (child));
}
g_object_notify_by_pspec (G_OBJECT (bar), widget_props[PROP_CHILD]);
}
/**
* gtk_search_bar_get_child :
* @ bar : a ` GtkSearchBar `
*
* Gets the child widget of @ bar .
*
* Returns : ( nullable ) ( transfer none ) : the child widget of @ bar
*/
GtkWidget *
gtk_search_bar_get_child (GtkSearchBar *bar)
{
return bar->child;
}
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