GtkAssistant

GtkAssistant — A widget used to guide users through multi-step operations

Child Properties

gboolean complete Read / Write
GdkPixbuf * header-image Read / Write
GtkAssistantPageType page-type Read / Write
GdkPixbuf * sidebar-image Read / Write
gchar * title Read / Write

Style Properties

Signals

Types and Values

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GtkObject
            ╰── GtkWidget
                ╰── GtkContainer
                    ╰── GtkBin
                        ╰── GtkWindow
                            ╰── GtkAssistant

Implemented Interfaces

GtkAssistant implements AtkImplementorIface and GtkBuildable.

Includes

#include <gtk/gtk.h>

Description

A GtkAssistant is a widget used to represent a generally complex operation splitted in several steps, guiding the user through its pages and controlling the page flow to collect the necessary data.

GtkAssistant as GtkBuildable

The GtkAssistant implementation of the GtkBuildable interface exposes the action_area as internal children with the name "action_area". To add pages to an assistant in GtkBuilder, simply add it as a <child> to the GtkAssistant object, and set its child properties as necessary.

Functions

gtk_assistant_new ()

GtkWidget *
gtk_assistant_new (void);

Creates a new GtkAssistant.

Returns

a newly created GtkAssistant

Since: 2.10


gtk_assistant_get_current_page ()

gint
gtk_assistant_get_current_page (GtkAssistant *assistant);

Returns the page number of the current page

Parameters

assistant

a GtkAssistant

 

Returns

The index (starting from 0) of the current page in the assistant , if the assistant has no pages, -1 will be returned

Since: 2.10


gtk_assistant_set_current_page ()

void
gtk_assistant_set_current_page (GtkAssistant *assistant,
                                gint page_num);

Switches the page to page_num . Note that this will only be necessary in custom buttons, as the assistant flow can be set with gtk_assistant_set_forward_page_func().

Parameters

assistant

a GtkAssistant

 

page_num

index of the page to switch to, starting from 0. If negative, the last page will be used. If greater than the number of pages in the assistant , nothing will be done.

 

Since: 2.10


gtk_assistant_get_n_pages ()

gint
gtk_assistant_get_n_pages (GtkAssistant *assistant);

Returns the number of pages in the assistant

Parameters

assistant

a GtkAssistant

 

Returns

The number of pages in the assistant .

Since: 2.10


gtk_assistant_get_nth_page ()

GtkWidget *
gtk_assistant_get_nth_page (GtkAssistant *assistant,
                            gint page_num);

Returns the child widget contained in page number page_num .

Parameters

assistant

a GtkAssistant

 

page_num

The index of a page in the assistant , or -1 to get the last page;

 

Returns

The child widget, or NULL if page_num is out of bounds.

[transfer none]

Since: 2.10


gtk_assistant_prepend_page ()

gint
gtk_assistant_prepend_page (GtkAssistant *assistant,
                            GtkWidget *page);

Prepends a page to the assistant .

Parameters

assistant

a GtkAssistant

 

page

a GtkWidget

 

Returns

the index (starting at 0) of the inserted page

Since: 2.10


gtk_assistant_append_page ()

gint
gtk_assistant_append_page (GtkAssistant *assistant,
                           GtkWidget *page);

Appends a page to the assistant .

Parameters

assistant

a GtkAssistant

 

page

a GtkWidget

 

Returns

the index (starting at 0) of the inserted page

Since: 2.10


gtk_assistant_insert_page ()

gint
gtk_assistant_insert_page (GtkAssistant *assistant,
                           GtkWidget *page,
                           gint position);

Inserts a page in the assistant at a given position.

Parameters

assistant

a GtkAssistant

 

page

a GtkWidget

 

position

the index (starting at 0) at which to insert the page, or -1 to append the page to the assistant

 

Returns

the index (starting from 0) of the inserted page

Since: 2.10


GtkAssistantPageFunc ()

gint
(*GtkAssistantPageFunc) (gint current_page,
                         gpointer data);

A function used by gtk_assistant_set_forward_page_func() to know which is the next page given a current one. It's called both for computing the next page when the user presses the "forward" button and for handling the behavior of the "last" button.

Parameters

current_page

The page number used to calculate the next page.

 

data

user data.

 

Returns

The next page number.


gtk_assistant_set_forward_page_func ()

void
gtk_assistant_set_forward_page_func (GtkAssistant *assistant,
                                     GtkAssistantPageFunc page_func,
                                     gpointer data,
                                     GDestroyNotify destroy);

Sets the page forwarding function to be page_func , this function will be used to determine what will be the next page when the user presses the forward button. Setting page_func to NULL will make the assistant to use the default forward function, which just goes to the next visible page.

Parameters

assistant

a GtkAssistant

 

page_func

the GtkAssistantPageFunc, or NULL to use the default one.

[allow-none]

data

user data for page_func

 

destroy

destroy notifier for data

 

Since: 2.10


gtk_assistant_set_page_type ()

void
gtk_assistant_set_page_type (GtkAssistant *assistant,
                             GtkWidget *page,
                             GtkAssistantPageType type);

Sets the page type for page . The page type determines the page behavior in the assistant .

Parameters

assistant

a GtkAssistant

 

page

a page of assistant

 

type

the new type for page

 

Since: 2.10


gtk_assistant_get_page_type ()

GtkAssistantPageType
gtk_assistant_get_page_type (GtkAssistant *assistant,
                             GtkWidget *page);

Gets the page type of page .

Parameters

assistant

a GtkAssistant

 

page

a page of assistant

 

Returns

the page type of page .

Since: 2.10


gtk_assistant_set_page_title ()

void
gtk_assistant_set_page_title (GtkAssistant *assistant,
                              GtkWidget *page,
                              const gchar *title);

Sets a title for page . The title is displayed in the header area of the assistant when page is the current page.

Parameters

assistant

a GtkAssistant

 

page

a page of assistant

 

title

the new title for page

 

Since: 2.10


gtk_assistant_get_page_title ()

const gchar *
gtk_assistant_get_page_title (GtkAssistant *assistant,
                              GtkWidget *page);

Gets the title for page .

Parameters

assistant

a GtkAssistant

 

page

a page of assistant

 

Returns

the title for page .

Since: 2.10


gtk_assistant_set_page_header_image ()

void
gtk_assistant_set_page_header_image (GtkAssistant *assistant,
                                     GtkWidget *page,
                                     GdkPixbuf *pixbuf);

Sets a header image for page . This image is displayed in the header area of the assistant when page is the current page.

Parameters

assistant

a GtkAssistant

 

page

a page of assistant

 

pixbuf

the new header image page .

[allow-none]

Since: 2.10


gtk_assistant_get_page_header_image ()

GdkPixbuf *
gtk_assistant_get_page_header_image (GtkAssistant *assistant,
                                     GtkWidget *page);

Gets the header image for page .

Parameters

assistant

a GtkAssistant

 

page

a page of assistant

 

Returns

the header image for page , or NULL if there's no header image for the page.

[transfer none]

Since: 2.10


gtk_assistant_set_page_side_image ()

void
gtk_assistant_set_page_side_image (GtkAssistant *assistant,
                                   GtkWidget *page,
                                   GdkPixbuf *pixbuf);

Sets a header image for page . This image is displayed in the side area of the assistant when page is the current page.

Parameters

assistant

a GtkAssistant

 

page

a page of assistant

 

pixbuf

the new header image page .

[allow-none]

Since: 2.10


gtk_assistant_get_page_side_image ()

GdkPixbuf *
gtk_assistant_get_page_side_image (GtkAssistant *assistant,
                                   GtkWidget *page);

Gets the header image for page .

Parameters

assistant

a GtkAssistant

 

page

a page of assistant

 

Returns

the side image for page , or NULL if there's no side image for the page.

[transfer none]

Since: 2.10


gtk_assistant_set_page_complete ()

void
gtk_assistant_set_page_complete (GtkAssistant *assistant,
                                 GtkWidget *page,
                                 gboolean complete);

Sets whether page contents are complete. This will make assistant update the buttons state to be able to continue the task.

Parameters

assistant

a GtkAssistant

 

page

a page of assistant

 

complete

the completeness status of the page

 

Since: 2.10


gtk_assistant_get_page_complete ()

gboolean
gtk_assistant_get_page_complete (GtkAssistant *assistant,
                                 GtkWidget *page);

Gets whether page is complete.

Parameters

assistant

a GtkAssistant

 

page

a page of assistant

 

Returns

TRUE if page is complete.

Since: 2.10


gtk_assistant_add_action_widget ()

void
gtk_assistant_add_action_widget (GtkAssistant *assistant,
                                 GtkWidget *child);

Adds a widget to the action area of a GtkAssistant.

Parameters

assistant

a GtkAssistant

 

child

a GtkWidget

 

Since: 2.10


gtk_assistant_remove_action_widget ()

void
gtk_assistant_remove_action_widget (GtkAssistant *assistant,
                                    GtkWidget *child);

Removes a widget from the action area of a GtkAssistant.

Parameters

assistant

a GtkAssistant

 

child

a GtkWidget

 

Since: 2.10


gtk_assistant_update_buttons_state ()

void
gtk_assistant_update_buttons_state (GtkAssistant *assistant);

Forces assistant to recompute the buttons state.

GTK+ automatically takes care of this in most situations, e.g. when the user goes to a different page, or when the visibility or completeness of a page changes.

One situation where it can be necessary to call this function is when changing a value on the current page affects the future page flow of the assistant.

Parameters

assistant

a GtkAssistant

 

Since: 2.10


gtk_assistant_commit ()

void
gtk_assistant_commit (GtkAssistant *assistant);

Erases the visited page history so the back button is not shown on the current page, and removes the cancel button from subsequent pages.

Use this when the information provided up to the current page is hereafter deemed permanent and cannot be modified or undone. For example, showing a progress page to track a long-running, unreversible operation after the user has clicked apply on a confirmation page.

Parameters

assistant

a GtkAssistant

 

Since: 2.22

Types and Values

struct GtkAssistant

struct GtkAssistant;

enum GtkAssistantPageType

An enum for determining the page role inside the GtkAssistant. It's used to handle buttons sensitivity and visibility.

Note that an assistant needs to end its page flow with a page of type GTK_ASSISTANT_PAGE_CONFIRM, GTK_ASSISTANT_PAGE_SUMMARY or GTK_ASSISTANT_PAGE_PROGRESS to be correct.

Members

GTK_ASSISTANT_PAGE_CONTENT

The page has regular contents.

 

GTK_ASSISTANT_PAGE_INTRO

The page contains an introduction to the assistant task.

 

GTK_ASSISTANT_PAGE_CONFIRM

The page lets the user confirm or deny the changes.

 

GTK_ASSISTANT_PAGE_SUMMARY

The page informs the user of the changes done.

 

GTK_ASSISTANT_PAGE_PROGRESS

Used for tasks that take a long time to complete, blocks the assistant until the page is marked as complete.

 

Child Property Details

The “complete” child property

  “complete”                 gboolean

Setting the "complete" child property to TRUE marks a page as complete (i.e.: all the required fields are filled out). GTK+ uses this information to control the sensitivity of the navigation buttons.

Flags: Read / Write

Default value: FALSE

Since: 2.10


The “header-image” child property

  “header-image”             GdkPixbuf *

The image that is displayed next to the page.

Set this to NULL to make the sidebar disappear.

Flags: Read / Write

Since: 2.10


The “page-type” child property

  “page-type”                GtkAssistantPageType

The type of the assistant page.

Flags: Read / Write

Default value: GTK_ASSISTANT_PAGE_CONTENT

Since: 2.10


The “sidebar-image” child property

  “sidebar-image”            GdkPixbuf *

Sidebar image for the assistant page.

Flags: Read / Write


The “title” child property

  “title”                    gchar *

The title that is displayed in the page header.

If title and header-image are both NULL, no header is displayed.

Flags: Read / Write

Default value: NULL

Since: 2.10

Style Property Details

The “content-padding” style property

  “content-padding”          gint

Number of pixels around the content pages.

Flags: Read

Allowed values: >= 0

Default value: 1


The “header-padding” style property

  “header-padding”           gint

Number of pixels around the header.

Flags: Read

Allowed values: >= 0

Default value: 6

Signal Details

The “apply” signal

void
user_function (GtkAssistant *assistant,
               gpointer      user_data)

The ::apply signal is emitted when the apply button is clicked. The default behavior of the GtkAssistant is to switch to the page after the current page, unless the current page is the last one.

A handler for the ::apply signal should carry out the actions for which the wizard has collected data. If the action takes a long time to complete, you might consider putting a page of type GTK_ASSISTANT_PAGE_PROGRESS after the confirmation page and handle this operation within the “prepare” signal of the progress page.

Parameters

assistant

the GtkAssistant

 

user_data

user data set when the signal handler was connected.

 

Flags: Run Last

Since: 2.10


The “cancel” signal

void
user_function (GtkAssistant *assistant,
               gpointer      user_data)

The ::cancel signal is emitted when then the cancel button is clicked.

Parameters

assistant

the GtkAssistant

 

user_data

user data set when the signal handler was connected.

 

Flags: Run Last

Since: 2.10


The “close” signal

void
user_function (GtkAssistant *assistant,
               gpointer      user_data)

The ::close signal is emitted either when the close button of a summary page is clicked, or when the apply button in the last page in the flow (of type GTK_ASSISTANT_PAGE_CONFIRM) is clicked.

Parameters

assistant

the GtkAssistant

 

user_data

user data set when the signal handler was connected.

 

Flags: Run Last

Since: 2.10


The “prepare” signal

void
user_function (GtkAssistant *assistant,
               GtkWidget    *page,
               gpointer      user_data)

The ::prepare signal is emitted when a new page is set as the assistant's current page, before making the new page visible. A handler for this signal can do any preparation which are necessary before showing page .

Parameters

assistant

the GtkAssistant

 

page

the current page

 

user_data

user data set when the signal handler was connected.

 

Flags: Run Last

Since: 2.10