/* GTK - The GIMP Toolkit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * * 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 . */ /* * Modified by the GTK+ Team and others 1997-2000. 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 #include #include "gtkbutton.h" #include "gtkdialog.h" #include "gtkdialogprivate.h" #include "gtkheaderbar.h" #include "gtkheaderbarprivate.h" #include "gtklabel.h" #include "gtkmarshalers.h" #include "gtkbox.h" #include "gtkmain.h" #include "gtkprivate.h" #include "gtkbuildable.h" #include "gtkbuilderprivate.h" #include "gtksettings.h" #include "gtktypebuiltins.h" #include "gtksizegroup.h" /** * GtkDialog: * * Dialogs are a convenient way to prompt the user for a small amount * of input. * * ![An example GtkDialog](dialog.png) * * Typical uses are to display a message, ask a question, or anything else * that does not require extensive effort on the user’s part. * * The main area of a `GtkDialog` is called the "content area", and is yours * to populate with widgets such a `GtkLabel` or `GtkEntry`, to present * your information, questions, or tasks to the user. * * In addition, dialogs allow you to add "action widgets". Most commonly, * action widgets are buttons. Depending on the platform, action widgets may * be presented in the header bar at the top of the window, or at the bottom * of the window. To add action widgets, create your `GtkDialog` using * [ctor@Gtk.Dialog.new_with_buttons], or use * [method@Gtk.Dialog.add_button], [method@Gtk.Dialog.add_buttons], * or [method@Gtk.Dialog.add_action_widget]. * * `GtkDialogs` uses some heuristics to decide whether to add a close * button to the window decorations. If any of the action buttons use * the response ID %GTK_RESPONSE_CLOSE or %GTK_RESPONSE_CANCEL, the * close button is omitted. * * Clicking a button that was added as an action widget will emit the * [signal@Gtk.Dialog::response] signal with a response ID that you specified. * GTK will never assign a meaning to positive response IDs; these are * entirely user-defined. But for convenience, you can use the response * IDs in the [enum@Gtk.ResponseType] enumeration (these all have values * less than zero). If a dialog receives a delete event, the * [signal@Gtk.Dialog::response] signal will be emitted with the * %GTK_RESPONSE_DELETE_EVENT response ID. * * Dialogs are created with a call to [ctor@Gtk.Dialog.new] or * [ctor@Gtk.Dialog.new_with_buttons]. The latter is recommended; it allows * you to set the dialog title, some convenient flags, and add buttons. * * A “modal” dialog (that is, one which freezes the rest of the application * from user input), can be created by calling [method@Gtk.Window.set_modal] * on the dialog. When using [ctor@Gtk.Dialog.new_with_buttons], you can also * pass the %GTK_DIALOG_MODAL flag to make a dialog modal. * * For the simple dialog in the following example, a [class@Gtk.MessageDialog] * would save some effort. But you’d need to create the dialog contents manually * if you had more than a simple message in the dialog. * * An example for simple `GtkDialog` usage: * * ```c * // Function to open a dialog box with a message * void * quick_message (GtkWindow *parent, char *message) * { * GtkWidget *dialog, *label, *content_area; * GtkDialogFlags flags; * * // Create the widgets * flags = GTK_DIALOG_DESTROY_WITH_PARENT; * dialog = gtk_dialog_new_with_buttons ("Message", * parent, * flags, * _("_OK"), * GTK_RESPONSE_NONE, * NULL); * content_area = gtk_dialog_get_content_area (GTK_DIALOG (dialog)); * label = gtk_label_new (message); * * // Ensure that the dialog box is destroyed when the user responds * * g_signal_connect_swapped (dialog, * "response", * G_CALLBACK (gtk_window_destroy), * dialog); * * // Add the label, and show everything we’ve added * * gtk_box_append (GTK_BOX (content_area), label); * gtk_widget_show (dialog); * } * ``` * * # GtkDialog as GtkBuildable * * The `GtkDialog` implementation of the `GtkBuildable` interface exposes the * @content_area as an internal child with the name “content_area”. * * `GtkDialog` supports a custom `` element, which can contain * multiple `` elements. The “response” attribute specifies a * numeric response, and the content of the element is the id of widget * (which should be a child of the dialogs @action_area). To mark a response * as default, set the “default” attribute of the `` element * to true. * * `GtkDialog` supports adding action widgets by specifying “action” as * the “type” attribute of a `` element. The widget will be added * either to the action area or the headerbar of the dialog, depending * on the “use-header-bar” property. The response id has to be associated * with the action widget using the `` element. * * An example of a `GtkDialog` UI definition fragment: * * ```xml * * * * * * * * * * button_cancel * button_ok * * * ``` * * # Accessibility * * `GtkDialog` uses the %GTK_ACCESSIBLE_ROLE_DIALOG role. */ typedef struct _ResponseData ResponseData; typedef struct { GtkWidget *headerbar; GtkWidget *action_area; GtkWidget *content_area; GtkWidget *action_box; GtkSizeGroup *size_group; int use_header_bar; gboolean constructed; ResponseData *action_widgets; } GtkDialogPrivate; struct _ResponseData { ResponseData *next; GtkDialog *dialog; GtkWidget *widget; int response_id; }; static void gtk_dialog_add_buttons_valist (GtkDialog *dialog, const char *first_button_text, va_list args); static gboolean gtk_dialog_close_request (GtkWindow *window); static void gtk_dialog_map (GtkWidget *widget); static void gtk_dialog_close (GtkDialog *dialog); static ResponseData * get_response_data (GtkDialog *dialog, GtkWidget *widget, gboolean create); static void gtk_dialog_buildable_interface_init (GtkBuildableIface *iface); static gboolean gtk_dialog_buildable_custom_tag_start (GtkBuildable *buildable, GtkBuilder *builder, GObject *child, const char *tagname, GtkBuildableParser *parser, gpointer *data); static void gtk_dialog_buildable_custom_finished (GtkBuildable *buildable, GtkBuilder *builder, GObject *child, const char *tagname, gpointer user_data); static void gtk_dialog_buildable_add_child (GtkBuildable *buildable, GtkBuilder *builder, GObject *child, const char *type); enum { PROP_0, PROP_USE_HEADER_BAR }; enum { RESPONSE, CLOSE, LAST_SIGNAL }; static guint dialog_signals[LAST_SIGNAL]; G_DEFINE_TYPE_WITH_CODE (GtkDialog, gtk_dialog, GTK_TYPE_WINDOW, G_ADD_PRIVATE (GtkDialog) G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE, gtk_dialog_buildable_interface_init)) static void set_use_header_bar (GtkDialog *dialog, int use_header_bar) { GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); if (use_header_bar == -1) return; priv->use_header_bar = use_header_bar; } /* A convenience helper for built-in dialogs */ void gtk_dialog_set_use_header_bar_from_setting (GtkDialog *dialog) { GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); g_assert (!priv->constructed); g_object_get (gtk_widget_get_settings (GTK_WIDGET (dialog)), "gtk-dialogs-use-header", &priv->use_header_bar, NULL); } static void gtk_dialog_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkDialog *dialog = GTK_DIALOG (object); switch (prop_id) { case PROP_USE_HEADER_BAR: set_use_header_bar (dialog, g_value_get_int (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_dialog_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkDialog *dialog = GTK_DIALOG (object); GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); switch (prop_id) { case PROP_USE_HEADER_BAR: g_value_set_int (value, priv->use_header_bar); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void action_widget_activated (GtkWidget *widget, GtkDialog *dialog) { int response_id; response_id = gtk_dialog_get_response_for_widget (dialog, widget); gtk_dialog_response (dialog, response_id); } static void add_response_data (GtkDialog *dialog, GtkWidget *child, int response_id) { ResponseData *ad; guint signal_id; ad = get_response_data (dialog, child, TRUE); ad->response_id = response_id; if (GTK_IS_BUTTON (child)) signal_id = g_signal_lookup ("clicked", GTK_TYPE_BUTTON); else signal_id = gtk_widget_class_get_activate_signal (GTK_WIDGET_GET_CLASS (child)); if (signal_id) { GClosure *closure; closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated), G_OBJECT (dialog)); g_signal_connect_closure_by_id (child, signal_id, 0, closure, FALSE); } else g_warning ("Only 'activatable' widgets can be packed into the action area of a GtkDialog"); } static void add_to_header_bar (GtkDialog *dialog, GtkWidget *child, int response_id) { GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); gtk_widget_set_valign (child, GTK_ALIGN_CENTER); if (response_id == GTK_RESPONSE_CANCEL || response_id == GTK_RESPONSE_HELP) gtk_header_bar_pack_start (GTK_HEADER_BAR (priv->headerbar), child); else gtk_header_bar_pack_end (GTK_HEADER_BAR (priv->headerbar), child); gtk_size_group_add_widget (priv->size_group, child); if (response_id == GTK_RESPONSE_CANCEL || response_id == GTK_RESPONSE_CLOSE) gtk_header_bar_set_show_title_buttons (GTK_HEADER_BAR (priv->headerbar), FALSE); } static void apply_response_for_action_area (GtkDialog *dialog, GtkWidget *child, int response_id) { GtkDialogPrivate *priv G_GNUC_UNUSED = gtk_dialog_get_instance_private (dialog); g_assert (gtk_widget_get_parent (child) == priv->action_area); } static void add_to_action_area (GtkDialog *dialog, GtkWidget *child, int response_id) { GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); gtk_widget_set_valign (child, GTK_ALIGN_BASELINE); gtk_box_append (GTK_BOX (priv->action_area), child); apply_response_for_action_area (dialog, child, response_id); } static void update_suggested_action (GtkDialog *dialog, GtkWidget *child) { GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); if (priv->use_header_bar) { if (gtk_widget_has_css_class (child, "default")) gtk_widget_add_css_class (child, "suggested-action"); else gtk_widget_remove_css_class (child, "suggested-action"); } } static void gtk_dialog_constructed (GObject *object) { GtkDialog *dialog = GTK_DIALOG (object); GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); G_OBJECT_CLASS (gtk_dialog_parent_class)->constructed (object); priv->constructed = TRUE; if (priv->use_header_bar == -1) priv->use_header_bar = FALSE; if (priv->use_header_bar) { GList *children, *l; GtkWidget *child; children = NULL; for (child = gtk_widget_get_first_child (priv->action_area); child != NULL; child = gtk_widget_get_next_sibling (child)) children = g_list_append (children, child); for (l = children; l != NULL; l = l->next) { gboolean has_default; ResponseData *rd; int response_id; child = l->data; has_default = gtk_widget_has_default (child); rd = get_response_data (dialog, child, FALSE); response_id = rd ? rd->response_id : GTK_RESPONSE_NONE; g_object_ref (child); gtk_box_remove (GTK_BOX (priv->action_area), child); add_to_header_bar (dialog, child, response_id); g_object_unref (child); if (has_default) { gtk_window_set_default_widget (GTK_WINDOW (dialog), child); update_suggested_action (dialog, child); } } g_list_free (children); _gtk_header_bar_track_default_decoration (GTK_HEADER_BAR (priv->headerbar)); } else { gtk_window_set_titlebar (GTK_WINDOW (dialog), NULL); priv->headerbar = NULL; } gtk_widget_set_visible (priv->action_box, !priv->use_header_bar); } static void gtk_dialog_finalize (GObject *obj) { GtkDialog *dialog = GTK_DIALOG (obj); GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); while (priv->action_widgets) g_object_set_data (G_OBJECT (priv->action_widgets->widget), "gtk-dialog-response-data", NULL); g_object_unref (priv->size_group); G_OBJECT_CLASS (gtk_dialog_parent_class)->finalize (obj); } static void gtk_dialog_class_init (GtkDialogClass *class) { GObjectClass *gobject_class; GtkWidgetClass *widget_class; GtkWindowClass *window_class; gobject_class = G_OBJECT_CLASS (class); widget_class = GTK_WIDGET_CLASS (class); window_class = GTK_WINDOW_CLASS (class); gobject_class->constructed = gtk_dialog_constructed; gobject_class->set_property = gtk_dialog_set_property; gobject_class->get_property = gtk_dialog_get_property; gobject_class->finalize = gtk_dialog_finalize; widget_class->map = gtk_dialog_map; window_class->close_request = gtk_dialog_close_request; class->close = gtk_dialog_close; /** * GtkDialog::response: * @dialog: the object on which the signal is emitted * @response_id: the response ID * * Emitted when an action widget is clicked. * * The signal is also emitted when the dialog receives a * delete event, and when [method@Gtk.Dialog.response] is called. * On a delete event, the response ID is %GTK_RESPONSE_DELETE_EVENT. * Otherwise, it depends on which action widget was clicked. */ dialog_signals[RESPONSE] = g_signal_new (I_("response"), G_OBJECT_CLASS_TYPE (class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkDialogClass, response), NULL, NULL, NULL, G_TYPE_NONE, 1, G_TYPE_INT); /** * GtkDialog::close: * * Emitted when the user uses a keybinding to close the dialog. * * This is a [keybinding signal](class.SignalAction.html). * * The default binding for this signal is the Escape key. */ dialog_signals[CLOSE] = g_signal_new (I_("close"), G_OBJECT_CLASS_TYPE (class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GtkDialogClass, close), NULL, NULL, NULL, G_TYPE_NONE, 0); /** * GtkDialog:use-header-bar: * * %TRUE if the dialog uses a headerbar for action buttons * instead of the action-area. * * For technical reasons, this property is declared as an integer * property, but you should only set it to %TRUE or %FALSE. * * ## Creating a dialog with headerbar * * Builtin `GtkDialog` subclasses such as [class@Gtk.ColorChooserDialog] * set this property according to platform conventions (using the * [property@Gtk.Settings:gtk-dialogs-use-header] setting). * * Here is how you can achieve the same: * * ```c * g_object_get (settings, "gtk-dialogs-use-header", &header, NULL); * dialog = g_object_new (GTK_TYPE_DIALOG, header, TRUE, NULL); * ``` */ g_object_class_install_property (gobject_class, PROP_USE_HEADER_BAR, g_param_spec_int ("use-header-bar", NULL, NULL, -1, 1, -1, GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY)); gtk_widget_class_add_binding_signal (widget_class, GDK_KEY_Escape, 0, "close", NULL); /* Bind class to template */ gtk_widget_class_set_template_from_resource (widget_class, "/org/gtk/libgtk/ui/gtkdialog.ui"); gtk_widget_class_bind_template_child_internal_private (widget_class, GtkDialog, headerbar); gtk_widget_class_bind_template_child_internal_private (widget_class, GtkDialog, action_area); gtk_widget_class_bind_template_child_internal_private (widget_class, GtkDialog, content_area); gtk_widget_class_bind_template_child_private (widget_class, GtkDialog, action_box); gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_DIALOG); } static void gtk_dialog_init (GtkDialog *dialog) { GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); gtk_widget_add_css_class (GTK_WIDGET (dialog), "dialog"); priv->use_header_bar = -1; priv->size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL); gtk_widget_init_template (GTK_WIDGET (dialog)); } static GtkBuildableIface *parent_buildable_iface; static void gtk_dialog_buildable_interface_init (GtkBuildableIface *iface) { parent_buildable_iface = g_type_interface_peek_parent (iface); iface->custom_tag_start = gtk_dialog_buildable_custom_tag_start; iface->custom_finished = gtk_dialog_buildable_custom_finished; iface->add_child = gtk_dialog_buildable_add_child; } static gboolean gtk_dialog_close_request (GtkWindow *window) { gtk_dialog_response (GTK_DIALOG (window), GTK_RESPONSE_DELETE_EVENT); return GTK_WINDOW_CLASS (gtk_dialog_parent_class)->close_request (window); } /* A far too tricky heuristic for getting the right initial * focus widget if none was set. What we do is we focus the first * widget in the tab chain, but if this results in the focus * ending up on one of the response widgets _other_ than the * default response, we focus the default response instead. * * Additionally, skip selectable labels when looking for the * right initial focus widget. */ static void gtk_dialog_map (GtkWidget *widget) { GtkWidget *default_widget, *focus; GtkWindow *window = GTK_WINDOW (widget); GtkDialog *dialog = GTK_DIALOG (widget); GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); ResponseData *rd; if (gtk_window_get_transient_for (window) == NULL) g_message ("GtkDialog mapped without a transient parent. This is discouraged."); GTK_WIDGET_CLASS (gtk_dialog_parent_class)->map (widget); focus = gtk_window_get_focus (window); if (!focus) { GtkWidget *first_focus = NULL; do { g_signal_emit_by_name (window, "move_focus", GTK_DIR_TAB_FORWARD); focus = gtk_window_get_focus (window); if (GTK_IS_LABEL (focus) && !gtk_label_get_current_uri (GTK_LABEL (focus))) gtk_label_select_region (GTK_LABEL (focus), 0, 0); if (first_focus == NULL) first_focus = focus; else if (first_focus == focus) break; if (!GTK_IS_LABEL (focus)) break; } while (TRUE); default_widget = gtk_window_get_default_widget (window); for (rd = priv->action_widgets; rd != NULL; rd = rd->next) { if ((focus == NULL || rd->widget == focus) && rd->widget != default_widget && default_widget) { gtk_widget_grab_focus (default_widget); break; } } } } static void gtk_dialog_close (GtkDialog *dialog) { gtk_window_close (GTK_WINDOW (dialog)); } /** * gtk_dialog_new: * * Creates a new dialog box. * * Widgets should not be packed into the `GtkWindow` * directly, but into the @content_area and @action_area, * as described above. * * Returns: the new dialog as a `GtkWidget` */ GtkWidget* gtk_dialog_new (void) { return g_object_new (GTK_TYPE_DIALOG, NULL); } static GtkWidget* gtk_dialog_new_empty (const char *title, GtkWindow *parent, GtkDialogFlags flags) { GtkDialog *dialog; dialog = g_object_new (GTK_TYPE_DIALOG, "use-header-bar", (flags & GTK_DIALOG_USE_HEADER_BAR) != 0, NULL); if (title) gtk_window_set_title (GTK_WINDOW (dialog), title); if (parent) gtk_window_set_transient_for (GTK_WINDOW (dialog), parent); if (flags & GTK_DIALOG_MODAL) gtk_window_set_modal (GTK_WINDOW (dialog), TRUE); if (flags & GTK_DIALOG_DESTROY_WITH_PARENT) gtk_window_set_destroy_with_parent (GTK_WINDOW (dialog), TRUE); return GTK_WIDGET (dialog); } /** * gtk_dialog_new_with_buttons: * @title: (nullable): Title of the dialog * @parent: (nullable): Transient parent of the dialog * @flags: from `GtkDialogFlags` * @first_button_text: (nullable): text to go in first button * @...: response ID for first button, then additional buttons, ending with %NULL * * Creates a new `GtkDialog` with the given title and transient parent. * * The @flags argument can be used to make the dialog modal, have it * destroyed along with its transient parent, or make it use a headerbar. * * Button text/response ID pairs should be listed in pairs, with a %NULL * pointer ending the list. Button text can be arbitrary text. A response * ID can be any positive number, or one of the values in the * [enum@Gtk.ResponseType] enumeration. If the user clicks one of these * buttons, `GtkDialog` will emit the [signal@Gtk.Dialog::response] signal * with the corresponding response ID. * * If a `GtkDialog` receives a delete event, it will emit ::response with a * response ID of %GTK_RESPONSE_DELETE_EVENT. * * However, destroying a dialog does not emit the ::response signal; * so be careful relying on ::response when using the * %GTK_DIALOG_DESTROY_WITH_PARENT flag. * * Here’s a simple example: * ```c * GtkWindow *main_app_window; // Window the dialog should show up on * GtkWidget *dialog; * GtkDialogFlags flags = GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT; * dialog = gtk_dialog_new_with_buttons ("My dialog", * main_app_window, * flags, * _("_OK"), * GTK_RESPONSE_ACCEPT, * _("_Cancel"), * GTK_RESPONSE_REJECT, * NULL); * ``` * * Returns: a new `GtkDialog` */ GtkWidget* gtk_dialog_new_with_buttons (const char *title, GtkWindow *parent, GtkDialogFlags flags, const char *first_button_text, ...) { GtkDialog *dialog; va_list args; dialog = GTK_DIALOG (gtk_dialog_new_empty (title, parent, flags)); va_start (args, first_button_text); gtk_dialog_add_buttons_valist (dialog, first_button_text, args); va_end (args); return GTK_WIDGET (dialog); } static void response_data_free (gpointer data) { ResponseData *ad = data; GtkDialogPrivate *priv = gtk_dialog_get_instance_private (ad->dialog); if (priv->action_widgets == ad) { priv->action_widgets = ad->next; } else { ResponseData *prev = priv->action_widgets; while (prev) { if (prev->next == ad) { prev->next = ad->next; break; } prev = prev->next; } } g_slice_free (ResponseData, data); } static ResponseData * get_response_data (GtkDialog *dialog, GtkWidget *widget, gboolean create) { GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); ResponseData *ad = g_object_get_data (G_OBJECT (widget), "gtk-dialog-response-data"); if (ad == NULL && create) { ad = g_slice_new (ResponseData); ad->dialog = dialog; ad->widget = widget; g_object_set_data_full (G_OBJECT (widget), I_("gtk-dialog-response-data"), ad, response_data_free); ad->next = priv->action_widgets; priv->action_widgets = ad; } return ad; } /** * gtk_dialog_add_action_widget: * @dialog: a `GtkDialog` * @child: an activatable widget * @response_id: response ID for @child * * Adds an activatable widget to the action area of a `GtkDialog`. * * GTK connects a signal handler that will emit the * [signal@Gtk.Dialog::response] signal on the dialog when the widget * is activated. The widget is appended to the end of the dialog’s action * area. * * If you want to add a non-activatable widget, simply pack it into * the @action_area field of the `GtkDialog` struct. */ void gtk_dialog_add_action_widget (GtkDialog *dialog, GtkWidget *child, int response_id) { GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); g_return_if_fail (GTK_IS_DIALOG (dialog)); g_return_if_fail (GTK_IS_WIDGET (child)); add_response_data (dialog, child, response_id); if (priv->constructed && priv->use_header_bar) { add_to_header_bar (dialog, child, response_id); if (gtk_widget_has_default (child)) { gtk_window_set_default_widget (GTK_WINDOW (dialog), child); update_suggested_action (dialog, child); } } else add_to_action_area (dialog, child, response_id); } /** * gtk_dialog_add_button: * @dialog: a `GtkDialog` * @button_text: text of button * @response_id: response ID for the button * * Adds a button with the given text. * * GTK arranges things so that clicking the button will emit the * [signal@Gtk.Dialog::response] signal with the given @response_id. * The button is appended to the end of the dialog’s action area. * The button widget is returned, but usually you don’t need it. * * Returns: (transfer none): the `GtkButton` widget that was added */ GtkWidget* gtk_dialog_add_button (GtkDialog *dialog, const char *button_text, int response_id) { GtkWidget *button; g_return_val_if_fail (GTK_IS_DIALOG (dialog), NULL); g_return_val_if_fail (button_text != NULL, NULL); button = gtk_button_new_with_label (button_text); gtk_button_set_use_underline (GTK_BUTTON (button), TRUE); gtk_dialog_add_action_widget (dialog, button, response_id); return button; } static void gtk_dialog_add_buttons_valist (GtkDialog *dialog, const char *first_button_text, va_list args) { const char * text; int response_id; g_return_if_fail (GTK_IS_DIALOG (dialog)); if (first_button_text == NULL) return; text = first_button_text; response_id = va_arg (args, int); while (text != NULL) { gtk_dialog_add_button (dialog, text, response_id); text = va_arg (args, char *); if (text == NULL) break; response_id = va_arg (args, int); } } /** * gtk_dialog_add_buttons: * @dialog: a `GtkDialog` * @first_button_text: button text * @...: response ID for first button, then more text-response_id pairs * * Adds multiple buttons. * * This is the same as calling [method@Gtk.Dialog.add_button] * repeatedly. The variable argument list should be %NULL-terminated * as with [ctor@Gtk.Dialog.new_with_buttons]. Each button must have both * text and response ID. */ void gtk_dialog_add_buttons (GtkDialog *dialog, const char *first_button_text, ...) { va_list args; va_start (args, first_button_text); gtk_dialog_add_buttons_valist (dialog, first_button_text, args); va_end (args); } /** * gtk_dialog_set_response_sensitive: * @dialog: a `GtkDialog` * @response_id: a response ID * @setting: %TRUE for sensitive * * A convenient way to sensitize/desensitize dialog buttons. * * Calls `gtk_widget_set_sensitive (widget, @setting)` * for each widget in the dialog’s action area with the given @response_id. */ void gtk_dialog_set_response_sensitive (GtkDialog *dialog, int response_id, gboolean setting) { GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); ResponseData *rd; g_return_if_fail (GTK_IS_DIALOG (dialog)); for (rd = priv->action_widgets; rd != NULL; rd = rd->next) { if (rd->response_id == response_id) gtk_widget_set_sensitive (rd->widget, setting); } } /** * gtk_dialog_set_default_response: * @dialog: a `GtkDialog` * @response_id: a response ID * * Sets the default widget for the dialog based on the response ID. * * Pressing “Enter” normally activates the default widget. */ void gtk_dialog_set_default_response (GtkDialog *dialog, int response_id) { GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); ResponseData *rd; g_return_if_fail (GTK_IS_DIALOG (dialog)); for (rd = priv->action_widgets; rd != NULL; rd = rd->next) { if (rd->response_id == response_id) { gtk_window_set_default_widget (GTK_WINDOW (dialog), rd->widget); update_suggested_action (dialog, rd->widget); } } } /** * gtk_dialog_response: (attributes org.gtk.Method.signal=response) * @dialog: a `GtkDialog` * @response_id: response ID * * Emits the ::response signal with the given response ID. * * Used to indicate that the user has responded to the dialog in some way. */ void gtk_dialog_response (GtkDialog *dialog, int response_id) { g_return_if_fail (GTK_IS_DIALOG (dialog)); g_signal_emit (dialog, dialog_signals[RESPONSE], 0, response_id); } /** * gtk_dialog_get_widget_for_response: * @dialog: a `GtkDialog` * @response_id: the response ID used by the @dialog widget * * Gets the widget button that uses the given response ID in the action area * of a dialog. * * Returns: (nullable) (transfer none): the @widget button that uses the given * @response_id */ GtkWidget* gtk_dialog_get_widget_for_response (GtkDialog *dialog, int response_id) { GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); ResponseData *rd; g_return_val_if_fail (GTK_IS_DIALOG (dialog), NULL); for (rd = priv->action_widgets; rd != NULL; rd = rd->next) { if (rd->response_id == response_id) return rd->widget; } return NULL; } /** * gtk_dialog_get_response_for_widget: * @dialog: a `GtkDialog` * @widget: a widget in the action area of @dialog * * Gets the response id of a widget in the action area * of a dialog. * * Returns: the response id of @widget, or %GTK_RESPONSE_NONE * if @widget doesn’t have a response id set. */ int gtk_dialog_get_response_for_widget (GtkDialog *dialog, GtkWidget *widget) { ResponseData *rd; rd = get_response_data (dialog, widget, FALSE); if (!rd) return GTK_RESPONSE_NONE; else return rd->response_id; } typedef struct { char *widget_name; int response_id; gboolean is_default; int line; int col; } ActionWidgetInfo; typedef struct { GtkDialog *dialog; GtkBuilder *builder; GSList *items; int response_id; gboolean is_default; gboolean is_text; GString *string; gboolean in_action_widgets; int line; int col; } SubParserData; static void free_action_widget_info (gpointer data) { ActionWidgetInfo *item = data; g_free (item->widget_name); g_free (item); } static void parser_start_element (GtkBuildableParseContext *context, const char *element_name, const char **names, const char **values, gpointer user_data, GError **error) { SubParserData *data = (SubParserData*)user_data; if (strcmp (element_name, "action-widget") == 0) { const char *response; gboolean is_default = FALSE; GValue gvalue = G_VALUE_INIT; if (!_gtk_builder_check_parent (data->builder, context, "action-widgets", error)) return; if (!g_markup_collect_attributes (element_name, names, values, error, G_MARKUP_COLLECT_STRING, "response", &response, G_MARKUP_COLLECT_BOOLEAN|G_MARKUP_COLLECT_OPTIONAL, "default", &is_default, G_MARKUP_COLLECT_INVALID)) { _gtk_builder_prefix_error (data->builder, context, error); return; } if (!gtk_builder_value_from_string_type (data->builder, GTK_TYPE_RESPONSE_TYPE, response, &gvalue, error)) { _gtk_builder_prefix_error (data->builder, context, error); return; } data->response_id = g_value_get_enum (&gvalue); data->is_default = is_default; data->is_text = TRUE; g_string_set_size (data->string, 0); gtk_buildable_parse_context_get_position (context, &data->line, &data->col); } else if (strcmp (element_name, "action-widgets") == 0) { if (!_gtk_builder_check_parent (data->builder, context, "object", error)) return; if (!g_markup_collect_attributes (element_name, names, values, error, G_MARKUP_COLLECT_INVALID, NULL, NULL, G_MARKUP_COLLECT_INVALID)) _gtk_builder_prefix_error (data->builder, context, error); data->in_action_widgets = TRUE; } else { _gtk_builder_error_unhandled_tag (data->builder, context, "GtkDialog", element_name, error); } } static void parser_text_element (GtkBuildableParseContext *context, const char *text, gsize text_len, gpointer user_data, GError **error) { SubParserData *data = (SubParserData*)user_data; if (data->is_text) g_string_append_len (data->string, text, text_len); } static void parser_end_element (GtkBuildableParseContext *context, const char *element_name, gpointer user_data, GError **error) { SubParserData *data = (SubParserData*)user_data; if (data->is_text) { ActionWidgetInfo *item; item = g_new (ActionWidgetInfo, 1); item->widget_name = g_strdup (data->string->str); item->response_id = data->response_id; item->is_default = data->is_default; item->line = data->line; item->col = data->col; data->items = g_slist_prepend (data->items, item); data->is_default = FALSE; data->is_text = FALSE; } } static const GtkBuildableParser sub_parser = { parser_start_element, parser_end_element, parser_text_element, }; static gboolean gtk_dialog_buildable_custom_tag_start (GtkBuildable *buildable, GtkBuilder *builder, GObject *child, const char *tagname, GtkBuildableParser *parser, gpointer *parser_data) { SubParserData *data; if (child) return FALSE; if (strcmp (tagname, "action-widgets") == 0) { data = g_slice_new0 (SubParserData); data->dialog = GTK_DIALOG (buildable); data->builder = builder; data->string = g_string_new (""); data->items = NULL; data->in_action_widgets = FALSE; *parser = sub_parser; *parser_data = data; return TRUE; } return parent_buildable_iface->custom_tag_start (buildable, builder, child, tagname, parser, parser_data); } static void gtk_dialog_buildable_custom_finished (GtkBuildable *buildable, GtkBuilder *builder, GObject *child, const char *tagname, gpointer user_data) { GtkDialog *dialog = GTK_DIALOG (buildable); GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); GSList *l; SubParserData *data; GObject *object; ResponseData *ad; guint signal_id; if (strcmp (tagname, "action-widgets") != 0) { parent_buildable_iface->custom_finished (buildable, builder, child, tagname, user_data); return; } data = (SubParserData*)user_data; data->items = g_slist_reverse (data->items); for (l = data->items; l; l = l->next) { ActionWidgetInfo *item = l->data; gboolean is_action; object = _gtk_builder_lookup_object (builder, item->widget_name, item->line, item->col); if (!object) continue; /* If the widget already has response data at this point, it * was either added by gtk_dialog_add_action_widget(), or via * or by moving an action area child * to the header bar. In these cases, apply placement heuristics * based on the response id. */ is_action = get_response_data (dialog, GTK_WIDGET (object), FALSE) != NULL; ad = get_response_data (dialog, GTK_WIDGET (object), TRUE); ad->response_id = item->response_id; if (GTK_IS_BUTTON (object)) signal_id = g_signal_lookup ("clicked", GTK_TYPE_BUTTON); else signal_id = gtk_widget_class_get_activate_signal (GTK_WIDGET_GET_CLASS (object)); if (signal_id && !is_action) { GClosure *closure; closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated), G_OBJECT (dialog)); g_signal_connect_closure_by_id (object, signal_id, 0, closure, FALSE); } if (gtk_widget_get_parent (GTK_WIDGET (object)) == priv->action_area) { apply_response_for_action_area (dialog, GTK_WIDGET (object), ad->response_id); } else if (gtk_widget_get_ancestor (GTK_WIDGET (object), GTK_TYPE_HEADER_BAR) == priv->headerbar) { if (is_action) { g_object_ref (object); gtk_header_bar_remove (GTK_HEADER_BAR (priv->headerbar), GTK_WIDGET (object)); add_to_header_bar (dialog, GTK_WIDGET (object), ad->response_id); g_object_unref (object); } } if (item->is_default) { gtk_window_set_default_widget (GTK_WINDOW (dialog), GTK_WIDGET (object)); update_suggested_action (dialog, GTK_WIDGET (object)); } } g_slist_free_full (data->items, free_action_widget_info); g_string_free (data->string, TRUE); g_slice_free (SubParserData, data); } static void gtk_dialog_buildable_add_child (GtkBuildable *buildable, GtkBuilder *builder, GObject *child, const char *type) { GtkDialog *dialog = GTK_DIALOG (buildable); GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); if (type == NULL) parent_buildable_iface->add_child (buildable, builder, child, type); else if (g_str_equal (type, "titlebar")) { priv->headerbar = GTK_WIDGET (child); _gtk_header_bar_track_default_decoration (GTK_HEADER_BAR (priv->headerbar)); gtk_window_set_titlebar (GTK_WINDOW (buildable), priv->headerbar); } else if (g_str_equal (type, "action")) gtk_dialog_add_action_widget (GTK_DIALOG (buildable), GTK_WIDGET (child), GTK_RESPONSE_NONE); else GTK_BUILDER_WARN_INVALID_CHILD_TYPE (buildable, type); } GtkWidget * gtk_dialog_get_action_area (GtkDialog *dialog) { GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); g_return_val_if_fail (GTK_IS_DIALOG (dialog), NULL); return priv->action_area; } /** * gtk_dialog_get_header_bar: * @dialog: a `GtkDialog` * * Returns the header bar of @dialog. * * Note that the headerbar is only used by the dialog if the * [property@Gtk.Dialog:use-header-bar] property is %TRUE. * * Returns: (type Gtk.HeaderBar) (transfer none): the header bar */ GtkWidget * gtk_dialog_get_header_bar (GtkDialog *dialog) { GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); g_return_val_if_fail (GTK_IS_DIALOG (dialog), NULL); return priv->headerbar; } /** * gtk_dialog_get_content_area: * @dialog: a `GtkDialog` * * Returns the content area of @dialog. * * Returns: (type Gtk.Box) (transfer none): the content area `GtkBox`. */ GtkWidget * gtk_dialog_get_content_area (GtkDialog *dialog) { GtkDialogPrivate *priv = gtk_dialog_get_instance_private (dialog); g_return_val_if_fail (GTK_IS_DIALOG (dialog), NULL); return priv->content_area; }