Gtk::EntryBuffer Class Reference

A Text buffer for the Entry widget. More...

#include <gtkmm/entrybuffer.h>

Inheritance diagram for Gtk::EntryBuffer:

Public Member Functions
	EntryBuffer (EntryBuffer &&src) noexcept
EntryBuffer &	operator= (EntryBuffer &&src) noexcept
	~EntryBuffer () noexcept override
GtkEntryBuffer *	gobj ()
	Provides access to the underlying C GObject.
const GtkEntryBuffer *	gobj () const
	Provides access to the underlying C GObject.
GtkEntryBuffer *	gobj_copy ()
	Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
gsize	get_bytes () const
	Retrieves the length in bytes of the buffer.
guint	get_length () const
	Retrieves the length in characters of the buffer.
Glib::ustring	get_text () const
	Retrieves the contents of the buffer.
void	set_text (const Glib::ustring &text)
	Sets the text in the buffer.
void	set_max_length (int max_length)
	Sets the maximum allowed length of the contents of the buffer.
int	get_max_length () const
	Retrieves the maximum allowed length of the text in buffer.
guint	insert_text (guint position, const Glib::ustring &text)
	Inserts text into the contents of the buffer, at position position.
guint	delete_text (guint position, int n_chars)
	Deletes a sequence of characters from the buffer.
void	emit_inserted_text (guint position, const Glib::ustring &text)
	Used when deriving from EntryBuffer.
void	emit_deleted_text (guint position, guint n_chars)
	Used when subclassing Gtk::EntryBuffer.
Glib::SignalProxy< void(guint, const char *, guint)>	signal_inserted_text ()
Glib::SignalProxy< void(guint, guint)>	signal_deleted_text ()
Glib::PropertyProxy< Glib::ustring >	property_text ()
	The contents of the buffer.
Glib::PropertyProxy_ReadOnly< Glib::ustring >	property_text () const
	The contents of the buffer.
Glib::PropertyProxy_ReadOnly< guint >	property_length () const
	The length (in characters) of the text in buffer.
Glib::PropertyProxy< int >	property_max_length ()
	The maximum length (in characters) of the text in the buffer.
Glib::PropertyProxy_ReadOnly< int >	property_max_length () const
	The maximum length (in characters) of the text in the buffer.
Public Member Functions inherited from Glib::Object
	Object (const Object &)=delete
Object &	operator= (const Object &)=delete
	Object (Object &&src) noexcept
Object &	operator= (Object &&src) noexcept
void *	get_data (const QueryQuark &key)
void	set_data (const Quark &key, void *data)
void	set_data_with_c_callback (const Quark &key, void *data, GDestroyNotify notify)
void	set_data (const Quark &key, void *data, DestroyNotify notify)
void	remove_data (const QueryQuark &quark)
void *	steal_data (const QueryQuark &quark)
Glib::RefPtr< Glib::Object >	wrap (GObject *object, bool take_copy=false)
Public Member Functions inherited from Glib::ObjectBase
	ObjectBase (const ObjectBase &)=delete
ObjectBase &	operator= (const ObjectBase &)=delete
void	set_property_value (const Glib::ustring &property_name, const Glib::ValueBase &value)
void	get_property_value (const Glib::ustring &property_name, Glib::ValueBase &value) const
void	set_property (const Glib::ustring &property_name, const PropertyType &value)
void	get_property (const Glib::ustring &property_name, PropertyType &value) const
PropertyType	get_property (const Glib::ustring &property_name) const
sigc::connection	connect_property_changed (const Glib::ustring &property_name, const sigc::slot< void()> &slot)
sigc::connection	connect_property_changed (const Glib::ustring &property_name, sigc::slot< void()> &&slot)
void	freeze_notify ()
void	thaw_notify ()
virtual void	reference () const
virtual void	unreference () const
GObject *	gobj ()
const GObject *	gobj () const
GObject *	gobj_copy () const
Public Member Functions inherited from sigc::trackable
	trackable () noexcept
	trackable (const trackable &src) noexcept
	trackable (trackable &&src) noexcept
	~trackable ()
void	add_destroy_notify_callback (notifiable *data, func_destroy_notify func) const
void	notify_callbacks ()
trackable &	operator= (const trackable &src)
trackable &	operator= (trackable &&src) noexcept
void	remove_destroy_notify_callback (notifiable *data) const

Static Public Member Functions
static GType	get_type ()
	Get the GType for this class, for use with the underlying GObject type system.
static Glib::RefPtr< EntryBuffer >	create ()
	Create a new EntryBuffer object with no text.
static Glib::RefPtr< EntryBuffer >	create (const Glib::ustring &text)
	Create a new EntryBuffer object.

Protected Member Functions
	EntryBuffer ()
	Create a new EntryBuffer object with no text.
	EntryBuffer (const Glib::ustring &text)
	Create a new EntryBuffer object.
virtual void	on_inserted_text (guint position, const char *chars, guint n_chars)
	This is a default handler for the signal signal_inserted_text().
virtual void	on_deleted_text (guint position, guint n_chars)
	This is a default handler for the signal signal_deleted_text().
Protected Member Functions inherited from Glib::Object
	Object ()
	Object (const Glib::ConstructParams &construct_params)
	Object (GObject *castitem)
	~Object () noexcept override
Protected Member Functions inherited from Glib::ObjectBase
	ObjectBase ()
	ObjectBase (const char *custom_type_name)
	ObjectBase (const std::type_info &custom_type_info)
	ObjectBase (ObjectBase &&src) noexcept
ObjectBase &	operator= (ObjectBase &&src) noexcept
virtual	~ObjectBase () noexcept=0
void	initialize (GObject *castitem)
void	initialize_move (GObject *castitem, Glib::ObjectBase *previous_wrapper)

Related Symbols
(Note that these are not member symbols.)
Glib::RefPtr< Gtk::EntryBuffer >	wrap (GtkEntryBuffer *object, bool take_copy=false)
	A Glib::wrap() method for this object.

Additional Inherited Members
Public Types inherited from Glib::Object
typedef void(*)(gpointer data	DestroyNotify)
Public Types inherited from sigc::trackable
typedef internal::func_destroy_notify	func_destroy_notify
Public Types inherited from sigc::notifiable
typedef internal::func_destroy_notify	func_destroy_notify

Detailed Description

A Text buffer for the Entry widget.

The EntryBuffer class contains the actual text displayed in an Entry widget.

A single EntryBuffer object can be shared by multiple Entry widgets which will then share the same text content, but not the cursor position, visibility attributes, icon etc.

EntryBuffer may be derived from. Such a derived class might allow text to be stored in an alternate location, such as non-pageable memory, useful in the case of important passwords. Or a derived class could integrate with an application's concept of undo/redo.

Constructor & Destructor Documentation

EntryBuffer() [1/3]

Gtk::EntryBuffer::EntryBuffer ( EntryBuffer &&  src )

noexcept

~EntryBuffer()

Gtk::EntryBuffer::~EntryBuffer ( )

overridenoexcept

EntryBuffer() [2/3]

Gtk::EntryBuffer::EntryBuffer ( )

protected

Create a new EntryBuffer object with no text.

EntryBuffer() [3/3]

Gtk::EntryBuffer::EntryBuffer ( const Glib::ustring &  text )

explicitprotected

Create a new EntryBuffer object.

Parameters

text	Initial buffer text.

Member Function Documentation

create() [1/2]

static Glib::RefPtr< EntryBuffer > Gtk::EntryBuffer::create ( )

static

Create a new EntryBuffer object with no text.

create() [2/2]

static Glib::RefPtr< EntryBuffer > Gtk::EntryBuffer::create ( const Glib::ustring &  text )

static

Create a new EntryBuffer object.

Parameters

text	Initial buffer text.

delete_text()

guint Gtk::EntryBuffer::delete_text	(	guint	position,
		int	n_chars
	)

Deletes a sequence of characters from the buffer.

n_chars characters are deleted starting at position. If n_chars is negative, then all characters until the end of the text are deleted.

If position or n_chars are out of bounds, then they are coerced to sane values.

Note that the positions are specified in characters, not bytes.

Parameters

position	Position at which to delete text.
n_chars	Number of characters to delete.

Returns

The number of characters deleted.

emit_deleted_text()

void Gtk::EntryBuffer::emit_deleted_text	(	guint	position,
		guint	n_chars
	)

Used when subclassing Gtk::EntryBuffer.

Parameters

position	Position at which text was deleted.
n_chars	Number of characters deleted.

emit_inserted_text()

void Gtk::EntryBuffer::emit_inserted_text	(	guint	position,
		const Glib::ustring &	text
	)

Used when deriving from EntryBuffer.

Parameters

position	Position at which text was inserted.
text	Text that was inserted.

get_bytes()

gsize Gtk::EntryBuffer::get_bytes

(

)

const

Retrieves the length in bytes of the buffer.

See get_length().

Returns

The byte length of the buffer.

get_length()

guint Gtk::EntryBuffer::get_length

(

)

const

Retrieves the length in characters of the buffer.

Returns

The number of characters in the buffer.

get_max_length()

int Gtk::EntryBuffer::get_max_length

(

)

const

Retrieves the maximum allowed length of the text in buffer.

Returns

The maximum allowed number of characters in Gtk::EntryBuffer, or 0 if there is no maximum.

get_text()

Glib::ustring Gtk::EntryBuffer::get_text

(

)

const

Retrieves the contents of the buffer.

The memory pointer returned by this call will not change unless this object emits a signal, or is finalized.

Returns

A pointer to the contents of the widget as a string. This string points to internally allocated storage in the buffer and must not be freed, modified or stored.

get_type()

static GType Gtk::EntryBuffer::get_type ( )

static

Get the GType for this class, for use with the underlying GObject type system.

gobj() [1/2]

GtkEntryBuffer * Gtk::EntryBuffer::gobj ( )

inline

Provides access to the underlying C GObject.

gobj() [2/2]

const GtkEntryBuffer * Gtk::EntryBuffer::gobj ( ) const

inline

Provides access to the underlying C GObject.

gobj_copy()

GtkEntryBuffer * Gtk::EntryBuffer::gobj_copy

(

)

Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

insert_text()

guint Gtk::EntryBuffer::insert_text	(	guint	position,
		const Glib::ustring &	text
	)

Inserts text into the contents of the buffer, at position position.

Parameters

position	The position at which to insert text.
text	The text to insert into the buffer.

Returns

The number of characters actually inserted.

on_deleted_text()

virtual void Gtk::EntryBuffer::on_deleted_text ( guint  position, guint  n_chars  )

protectedvirtual

This is a default handler for the signal signal_deleted_text().

on_inserted_text()

virtual void Gtk::EntryBuffer::on_inserted_text ( guint  position, const char *  chars, guint  n_chars  )

protectedvirtual

This is a default handler for the signal signal_inserted_text().

operator=()

EntryBuffer & Gtk::EntryBuffer::operator= ( EntryBuffer &&  src )

noexcept

property_length()

Glib::PropertyProxy_ReadOnly< guint > Gtk::EntryBuffer::property_length

(

)

const

The length (in characters) of the text in buffer.

Default value: 0

Returns

A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

property_max_length() [1/2]

Glib::PropertyProxy< int > Gtk::EntryBuffer::property_max_length

(

)

The maximum length (in characters) of the text in the buffer.

Default value: 0

Returns

A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

property_max_length() [2/2]

Glib::PropertyProxy_ReadOnly< int > Gtk::EntryBuffer::property_max_length

(

)

const

The maximum length (in characters) of the text in the buffer.

Default value: 0

Returns

A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

property_text() [1/2]

Glib::PropertyProxy< Glib::ustring > Gtk::EntryBuffer::property_text

(

)

The contents of the buffer.

Default value: ""

Returns

A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

property_text() [2/2]

Glib::PropertyProxy_ReadOnly< Glib::ustring > Gtk::EntryBuffer::property_text

(

)

const

The contents of the buffer.

Default value: ""

Returns

A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

set_max_length()

void Gtk::EntryBuffer::set_max_length

(

int

max_length

)

Sets the maximum allowed length of the contents of the buffer.

If the current contents are longer than the given length, then they will be truncated to fit.

Parameters

max_length

The maximum length of the entry buffer, or 0 for no maximum. (other than the maximum length of entries.) The value passed in will be clamped to the range 0-65536.

set_text()

void Gtk::EntryBuffer::set_text

(

const Glib::ustring &

text

)

Sets the text in the buffer.

This is roughly equivalent to calling delete_text() and insert_text().

Parameters

text	The text to set in the buffer.

signal_deleted_text()

Glib::SignalProxy< void(guint, guint)> Gtk::EntryBuffer::signal_deleted_text

(

)

Slot Prototype:

void on_my_deleted_text(guint position, guint n_chars)

Flags: Run Last

The text is altered in the default handler for this signal.

If you want access to the text after the text has been modified, use connect(..., true).

Parameters

position	The position the text was deleted at.
n_chars	The number of characters that were deleted.

signal_inserted_text()

Glib::SignalProxy< void(guint, const char *, guint)> Gtk::EntryBuffer::signal_inserted_text

(

)

Slot Prototype:

void on_my_inserted_text(guint position, const char* chars, guint n_chars)

Flags: Run First

This signal is emitted after text is inserted into the buffer.

Parameters

position	The position the text was inserted at.
chars	The text that was inserted.
n_chars	The number of characters that were inserted.

Friends And Related Symbol Documentation

wrap()

Glib::RefPtr< Gtk::EntryBuffer > wrap ( GtkEntryBuffer *  object, bool  take_copy = false  )

related

A Glib::wrap() method for this object.

Parameters

object	The C instance.
take_copy	False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns

A C++ instance that wraps this C instance.