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gtk2/gtk/gtkeditable.c
Matthias Clasen d3c45cb979 docs: Miscellaneous doc fixes 
Additions and correction all over the place,
in GDK and GTK docs.
2019-02-24 16:53:12 -05:00

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/* 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 <http://www.gnu.org/licenses/>.
*/
/*
* 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/.
*/
/**
* SECTION:gtkeditable
* @Short_description: Interface for text-editing widgets
* @Title: GtkEditable
*
* The #GtkEditable interface is an interface which should be implemented by
* text editing widgets, such as #GtkEntry and #GtkSpinButton. It contains functions
* for generically manipulating an editable widget, a large number of action
* signals used for key bindings, and several signals that an application can
* connect to to modify the behavior of a widget.
*
* As an example of the latter usage, by connecting
* the following handler to #GtkEditable::insert-text, an application
* can convert all entry into a widget into uppercase.
*
* ## Forcing entry to uppercase.
*
* |[<!-- language="C" -->
* #include <ctype.h>;
*
* void
* insert_text_handler (GtkEditable *editable,
* const char *text,
* int length,
* int *position,
* gpointer data)
* {
* char *result = g_utf8_strup (text, length);
*
* g_signal_handlers_block_by_func (editable,
* (gpointer) insert_text_handler, data);
* gtk_editable_insert_text (editable, result, length, position);
* g_signal_handlers_unblock_by_func (editable,
* (gpointer) insert_text_handler, data);
*
* g_signal_stop_emission_by_name (editable, "insert_text");
*
* g_free (result);
* }
* ]|
*
* ## Implementing GtkEditable
*
* The most likely scenario for implementing GtkEditable on your own widget
* is that you will embed a #GtkText inside a complex widget, and want to
* delegate the editable functionality to that text widget. GtkEditable
* provides some utility functions to make this easy.
*
* In your class_init function, call gtk_editable_install_properties(),
* passing the first available property ID:
*
* |[
* static void
* my_class_init (MyClass *class)
* {
* ...
* g_object_class_install_properties (object_class, NUM_PROPERTIES, props);
* gtk_editable_install_properties (object_clas, NUM_PROPERTIES);
* ...
* }
* ]|
*
* In your interface_init function for the GtkEditable interface, provide
* an implementation for the get_delegate vfunc that returns your text widget:
*
* |[
* GtkEditable *
* get_editable_delegate (GtkEditable *editable)
* {
* return GTK_EDITABLE (MY_WIDGET (editable)->text_widget);
* }
*
* static void
* my_editable_init (GtkEditableInterface *iface)
* {
* iface->get_delegate = get_editable_delegate;
* }
* ]|
*
* You don't need to provide any other vfuncs. The default implementations
* work by forwarding to the delegate that the get_delegate() vfunc returns.
*
* In your instance_init function, create your text widget, and then call
* gtk_editable_init_delegate():
*
* |[
* static void
* my_widget_init (MyWidget *self)
* {
* ...
* self->text_widget = gtk_text_new ();
* gtk_editable_init_delegate (GTK_EDITABLE (self));
* ...
* }
* ]|
*
* In your dispose function, call gtk_editable_finish_delegate() before
* destroying your text widget:
*
* |[
* static void
* my_widget_dispose (GObject *object)
* {
* ...
* gtk_editable_finish_delegate (GTK_EDITABLE (self));
* g_clear_pointer (&self->text_widget, gtk_widget_unparent);
* ...
* }
* ]|
*
* Finally, use gtk_editable_delegate_set_property() in your set_property
* function (and similar for get_property), to set the editable properties:
*
* |[
* ...
* if (gtk_editable_delegate_set_property (object, prop_id, value, pspec))
* return;
*
* switch (prop_id)
* ...
* ]|
*/
#include "config.h"
#include <string.h>
#include "gtkeditable.h"
#include "gtkentrybuffer.h"
#include "gtkmarshalers.h"
#include "gtkintl.h"
#include "gtkprivate.h"
G_DEFINE_INTERFACE (GtkEditable, gtk_editable, GTK_TYPE_WIDGET)
static GQuark quark_editable_data;
static GtkEditable *
get_delegate (GtkEditable *editable)
{
GtkEditableInterface *iface = GTK_EDITABLE_GET_IFACE (editable);
if (iface->get_delegate)
return iface->get_delegate (editable);
return NULL;
}
static void
gtk_editable_default_do_insert_text (GtkEditable *editable,
const char *text,
int length,
int *position)
{
g_signal_emit_by_name (editable, "insert-text", text, length, position);
}
#define warn_no_delegate(func) \
g_critical ("GtkEditable %s: default implementation called without a delegate", func);
static void
gtk_editable_default_insert_text (GtkEditable *editable,
const char *text,
int length,
int *position)
{
GtkEditable *delegate = get_delegate (editable);
if (delegate)
gtk_editable_insert_text (delegate, text, length, position);
else
warn_no_delegate ("insert_text");
}
static void
gtk_editable_default_do_delete_text (GtkEditable *editable,
int start_pos,
int end_pos)
{
g_signal_emit_by_name (editable, "delete-text", start_pos, end_pos);
}
static void
gtk_editable_default_delete_text (GtkEditable *editable,
int start_pos,
int end_pos)
{
GtkEditable *delegate = get_delegate (editable);
if (delegate)
gtk_editable_delete_text (delegate, start_pos, end_pos);
else
warn_no_delegate ("delete_text");
}
static const char *
gtk_editable_default_get_text (GtkEditable *editable)
{
GtkEditable *delegate = get_delegate (editable);
if (delegate)
return gtk_editable_get_text (delegate);
else
warn_no_delegate ("get_text");
return NULL;
}
static void
gtk_editable_default_set_selection_bounds (GtkEditable *editable,
int start_pos,
int end_pos)
{
GtkEditable *delegate = get_delegate (editable);
if (delegate)
gtk_editable_select_region (delegate, start_pos, end_pos);
else
warn_no_delegate ("select_region");
}
static gboolean
gtk_editable_default_get_selection_bounds (GtkEditable *editable,
int *start_pos,
int *end_pos)
{
GtkEditable *delegate = get_delegate (editable);
if (delegate)
return gtk_editable_get_selection_bounds (delegate, start_pos, end_pos);
else
warn_no_delegate ("select_region");
return FALSE;
}
static void
gtk_editable_default_init (GtkEditableInterface *iface)
{
quark_editable_data = g_quark_from_static_string ("GtkEditable-data");
iface->insert_text = gtk_editable_default_insert_text;
iface->delete_text = gtk_editable_default_delete_text;
iface->get_text = gtk_editable_default_get_text;
iface->do_insert_text = gtk_editable_default_do_insert_text;
iface->do_delete_text = gtk_editable_default_do_delete_text;
iface->get_selection_bounds = gtk_editable_default_get_selection_bounds;
iface->set_selection_bounds = gtk_editable_default_set_selection_bounds;
/**
* GtkEditable::insert-text:
* @editable: the object which received the signal
* @text: the new text to insert
* @length: the length of the new text, in bytes,
* or -1 if new_text is nul-terminated
* @position: (inout) (type int): the position, in characters,
* at which to insert the new text. this is an in-out
* parameter. After the signal emission is finished, it
* should point after the newly inserted text.
*
* This signal is emitted when text is inserted into
* the widget by the user. The default handler for
* this signal will normally be responsible for inserting
* the text, so by connecting to this signal and then
* stopping the signal with g_signal_stop_emission(), it
* is possible to modify the inserted text, or prevent
* it from being inserted entirely.
*/
g_signal_new (I_("insert-text"),
GTK_TYPE_EDITABLE,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkEditableInterface, insert_text),
NULL, NULL,
_gtk_marshal_VOID__STRING_INT_POINTER,
G_TYPE_NONE, 3,
G_TYPE_STRING,
G_TYPE_INT,
G_TYPE_POINTER);
/**
* GtkEditable::delete-text:
* @editable: the object which received the signal
* @start_pos: the starting position
* @end_pos: the end position
*
* This signal is emitted when text is deleted from
* the widget by the user. The default handler for
* this signal will normally be responsible for deleting
* the text, so by connecting to this signal and then
* stopping the signal with g_signal_stop_emission(), it
* is possible to modify the range of deleted text, or
* prevent it from being deleted entirely. The @start_pos
* and @end_pos parameters are interpreted as for
* gtk_editable_delete_text().
*/
g_signal_new (I_("delete-text"),
GTK_TYPE_EDITABLE,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkEditableInterface, delete_text),
NULL, NULL,
_gtk_marshal_VOID__INT_INT,
G_TYPE_NONE, 2,
G_TYPE_INT,
G_TYPE_INT);
/**
* GtkEditable::changed:
* @editable: the object which received the signal
*
* The ::changed signal is emitted at the end of a single
* user-visible operation on the contents of the #GtkEditable.
*
* E.g., a paste operation that replaces the contents of the
* selection will cause only one signal emission (even though it
* is implemented by first deleting the selection, then inserting
* the new content, and may cause multiple ::notify::text signals
* to be emitted).
*/
g_signal_new (I_("changed"),
GTK_TYPE_EDITABLE,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkEditableInterface, changed),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
g_object_interface_install_property (iface,
g_param_spec_string ("text",
P_("Text"),
P_("The contents of the entry"),
"",
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_interface_install_property (iface,
g_param_spec_int ("cursor-position",
P_("Cursor Position"),
P_("The current position of the insertion cursor in chars"),
0, GTK_ENTRY_BUFFER_MAX_SIZE,
0,
GTK_PARAM_READABLE));
g_object_interface_install_property (iface,
g_param_spec_int ("selection-bound",
P_("Selection Bound"),
P_("The position of the opposite end of the selection from the cursor in chars"),
0, GTK_ENTRY_BUFFER_MAX_SIZE,
0,
GTK_PARAM_READABLE));
g_object_interface_install_property (iface,
g_param_spec_boolean ("editable",
P_("Editable"),
P_("Whether the entry contents can be edited"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_interface_install_property (iface,
g_param_spec_int ("width-chars",
P_("Width in chars"),
P_("Number of characters to leave space for in the entry"),
-1, G_MAXINT,
-1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_interface_install_property (iface,
g_param_spec_int ("max-width-chars",
P_("Maximum width in characters"),
P_("The desired maximum width of the entry, in characters"),
-1, G_MAXINT,
-1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_interface_install_property (iface,
g_param_spec_float ("xalign",
P_("X align"),
P_("The horizontal alignment, from 0 (left) to 1 (right). Reversed for RTL layouts."),
0.0, 1.0,
0.0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
}
/**
* gtk_editable_insert_text: (virtual do_insert_text)
* @editable: a #GtkEditable
* @text: the text to append
* @length: the length of the text in bytes, or -1
* @position: (inout): location of the position text will be inserted at
*
* Inserts @length bytes of @text into the contents of the
* widget, at position @position.
*
* Note that the position is in characters, not in bytes.
* The function updates @position to point after the newly inserted text.
*/
void
gtk_editable_insert_text (GtkEditable *editable,
const char *text,
int length,
int *position)
{
g_return_if_fail (GTK_IS_EDITABLE (editable));
g_return_if_fail (position != NULL);
if (length < 0)
length = strlen (text);
GTK_EDITABLE_GET_IFACE (editable)->do_insert_text (editable, text, length, position);
}
/**
* gtk_editable_delete_text: (virtual do_delete_text)
* @editable: a #GtkEditable
* @start_pos: start position
* @end_pos: end position
*
* Deletes a sequence of characters. The characters that are deleted are
* those characters at positions from @start_pos up to, but not including
* @end_pos. If @end_pos is negative, then the characters deleted
* are those from @start_pos to the end of the text.
*
* Note that the positions are specified in characters, not bytes.
*/
void
gtk_editable_delete_text (GtkEditable *editable,
int start_pos,
int end_pos)
{
g_return_if_fail (GTK_IS_EDITABLE (editable));
GTK_EDITABLE_GET_IFACE (editable)->do_delete_text (editable, start_pos, end_pos);
}
/**
* gtk_editable_get_chars:
* @editable: a #GtkEditable
* @start_pos: start of text
* @end_pos: end of text
*
* Retrieves a sequence of characters. The characters that are retrieved
* are those characters at positions from @start_pos up to, but not
* including @end_pos. If @end_pos is negative, then the characters
* retrieved are those characters from @start_pos to the end of the text.
*
* Note that positions are specified in characters, not bytes.
*
* Returns: (transfer full): a pointer to the contents of the widget as a
* string. This string is allocated by the #GtkEditable
* implementation and should be freed by the caller.
*/
char *
gtk_editable_get_chars (GtkEditable *editable,
int start_pos,
int end_pos)
{
const char *text;
int length;
int start_index,end_index;
g_return_val_if_fail (GTK_IS_EDITABLE (editable), NULL);
text = GTK_EDITABLE_GET_IFACE (editable)->get_text (editable);
length = g_utf8_strlen (text, -1);
if (end_pos < 0)
end_pos = length;
start_pos = MIN (length, start_pos);
end_pos = MIN (length, end_pos);
start_index = g_utf8_offset_to_pointer (text, start_pos) - text;
end_index = g_utf8_offset_to_pointer (text, end_pos) - text;
return g_strndup (text + start_index, end_index - start_index);
}
/**
* gtk_editable_get_text:
* @editable: a #GtkEditable
*
* Retrieves the contents of @editable. The returned string is
* owned by GTK and must not be modified or freed.
*
* Returns: (transfer none): a pointer to the contents of the editable.
*/
const char *
gtk_editable_get_text (GtkEditable *editable)
{
g_return_val_if_fail (GTK_IS_EDITABLE (editable), NULL);
return GTK_EDITABLE_GET_IFACE (editable)->get_text (editable);
}
/**
* gtk_editable_set_text:
* @editable: a #GtkEditable
* @text: the text to set
*
* Sets the text in the editable to the given value,
* replacing the current contents.
*/
void
gtk_editable_set_text (GtkEditable *editable,
const char *text)
{
int pos;
g_return_if_fail (GTK_IS_EDITABLE (editable));
g_object_freeze_notify (G_OBJECT (editable));
gtk_editable_delete_text (editable, 0, -1);
pos = 0;
gtk_editable_insert_text (editable, text, -1, &pos);
g_object_thaw_notify (G_OBJECT (editable));
}
/**
* gtk_editable_set_position:
* @editable: a #GtkEditable
* @position: the position of the cursor
*
* Sets the cursor position in the editable to the given value.
*
* The cursor is displayed before the character with the given (base 0)
* index in the contents of the editable. The value must be less than or
* equal to the number of characters in the editable. A value of -1
* indicates that the position should be set after the last character
* of the editable. Note that @position is in characters, not in bytes.
*/
void
gtk_editable_set_position (GtkEditable *editable,
int position)
{
g_return_if_fail (GTK_IS_EDITABLE (editable));
GTK_EDITABLE_GET_IFACE (editable)->set_selection_bounds (editable, position, position);
}
/**
* gtk_editable_get_position:
* @editable: a #GtkEditable
*
* Retrieves the current position of the cursor relative to the start
* of the content of the editable.
*
* Note that this position is in characters, not in bytes.
*
* Returns: the cursor position
*/
int
gtk_editable_get_position (GtkEditable *editable)
{
int start, end;
g_return_val_if_fail (GTK_IS_EDITABLE (editable), 0);
GTK_EDITABLE_GET_IFACE (editable)->get_selection_bounds (editable, &start, &end);
return end;
}
/**
* gtk_editable_get_selection_bounds:
* @editable: a #GtkEditable
* @start_pos: (out) (allow-none): location to store the starting position, or %NULL
* @end_pos: (out) (allow-none): location to store the end position, or %NULL
*
* Retrieves the selection bound of the editable.
*
* @start_pos will be filled with the start of the selection and
* @end_pos with end. If no text was selected both will be identical
* and %FALSE will be returned.
*
* Note that positions are specified in characters, not bytes.
*
* Returns: %TRUE if there is a non-empty selection, %FALSE otherwise
*/
gboolean
gtk_editable_get_selection_bounds (GtkEditable *editable,
int *start_pos,
int *end_pos)
{
int tmp_start, tmp_end;
gboolean result;
g_return_val_if_fail (GTK_IS_EDITABLE (editable), FALSE);
result = GTK_EDITABLE_GET_IFACE (editable)->get_selection_bounds (editable, &tmp_start, &tmp_end);
if (start_pos)
*start_pos = MIN (tmp_start, tmp_end);
if (end_pos)
*end_pos = MAX (tmp_start, tmp_end);
return result;
}
/**
* gtk_editable_delete_selection:
* @editable: a #GtkEditable
*
* Deletes the currently selected text of the editable.
* This call doesn’t do anything if there is no selected text.
*/
void
gtk_editable_delete_selection (GtkEditable *editable)
{
int start, end;
g_return_if_fail (GTK_IS_EDITABLE (editable));
if (gtk_editable_get_selection_bounds (editable, &start, &end))
gtk_editable_delete_text (editable, start, end);
}
/**
* gtk_editable_select_region: (virtual set_selection_bounds)
* @editable: a #GtkEditable
* @start_pos: start of region
* @end_pos: end of region
*
* Selects a region of text.
*
* The characters that are selected are those characters at positions
* from @start_pos up to, but not including @end_pos. If @end_pos is
* negative, then the characters selected are those characters from
* @start_pos to the end of the text.
*
* Note that positions are specified in characters, not bytes.
*/
void
gtk_editable_select_region (GtkEditable *editable,
int start_pos,
int end_pos)
{
g_return_if_fail (GTK_IS_EDITABLE (editable));
GTK_EDITABLE_GET_IFACE (editable)->set_selection_bounds (editable, start_pos, end_pos);
}
/**
* gtk_editable_set_editable:
* @editable: a #GtkEditable
* @is_editable: %TRUE if the user is allowed to edit the text
* in the widget
*
* Determines if the user can edit the text
* in the editable widget or not.
*/
void
gtk_editable_set_editable (GtkEditable *editable,
gboolean is_editable)
{
g_return_if_fail (GTK_IS_EDITABLE (editable));
g_object_set (editable, "editable", is_editable, NULL);
}
/**
* gtk_editable_get_editable:
* @editable: a #GtkEditable
*
* Retrieves whether @editable is editable.
* See gtk_editable_set_editable().
*
* Returns: %TRUE if @editable is editable.
*/
gboolean
gtk_editable_get_editable (GtkEditable *editable)
{
gboolean is_editable;
g_return_val_if_fail (GTK_IS_EDITABLE (editable), FALSE);
g_object_get (editable, "editable", &is_editable, NULL);
return is_editable;
}
/**
* gtk_editable_get_alignment:
* @editable: a #GtkEditable
*
* Gets the value set by gtk_editable_set_alignment().
*
* Returns: the alignment
**/
float
gtk_editable_get_alignment (GtkEditable *editable)
{
float xalign;
g_return_val_if_fail (GTK_IS_EDITABLE (editable), 0);
g_object_get (editable, "xalign", &xalign, NULL);
return xalign;
}
/**
* gtk_editable_set_alignment:
* @editable: a #GtkEditable
* @xalign: The horizontal alignment, from 0 (left) to 1 (right).
* Reversed for RTL layouts
*
* Sets the alignment for the contents of the editable.
*
* This controls the horizontal positioning of the contents when
* the displayed text is shorter than the width of the editable.
*/
void
gtk_editable_set_alignment (GtkEditable *editable,
float xalign)
{
g_return_if_fail (GTK_IS_EDITABLE (editable));
g_object_set (editable, "xalign", xalign, NULL);
}
/**
* gtk_editable_get_width_chars:
* @editable: a #GtkEditable
*
* Gets the value set by gtk_editable_set_width_chars().
*
* Returns: number of chars to request space for, or negative if unset
**/
int
gtk_editable_get_width_chars (GtkEditable *editable)
{
int width_chars;
g_return_val_if_fail (GTK_IS_EDITABLE (editable), 0);
g_object_get (editable, "width-chars", &width_chars, NULL);
return width_chars;
}
/**
* gtk_editable_set_width_chars:
* @editable: a #GtkEditable
* @n_chars: width in chars
*
* Changes the size request of the editable to be about the
* right size for @n_chars characters.
*
* Note that it changes the size request, the size can still
* be affected by how you pack the widget into containers.
* If @n_chars is -1, the size reverts to the default size.
**/
void
gtk_editable_set_width_chars (GtkEditable *editable,
int n_chars)
{
g_return_if_fail (GTK_IS_EDITABLE (editable));
g_object_set (editable, "width-chars", n_chars, NULL);
}
/**
* gtk_editable_get_max_width_chars:
* @editable: a #GtkEditable
*
* Retrieves the desired maximum width of @editable, in characters.
* See gtk_editable_set_max_width_chars().
*
* Returns: the maximum width of the entry, in characters
*/
int
gtk_editable_get_max_width_chars (GtkEditable *editable)
{
int max_width_chars;
g_return_val_if_fail (GTK_IS_EDITABLE (editable), 0);
g_object_get (editable, "max-width-chars", &max_width_chars, NULL);
return max_width_chars;
}
/**
* gtk_editable_set_max_width_chars:
* @editable: a #GtkEditable
* @n_chars: the new desired maximum width, in characters
*
* Sets the desired maximum width in characters of @editable.
*/
void
gtk_editable_set_max_width_chars (GtkEditable *editable,
int n_chars)
{
g_return_if_fail (GTK_IS_EDITABLE (editable));
g_object_set (editable, "max-width-chars", n_chars, NULL);
}
/**
* gtk_editable_install_properties:
* @object_class: a #GObjectClass
* @first_prop: property ID to use for the first property
*
* Installs the GtkEditable properties for @class.
*
* This is a helper function that should be called in class_init,
* after installing your own properties.
*
* To handle the properties in your set_property and get_property
* functions, you can either use gtk_editable_delegate_set_property()
* and gtk_editable_delegate_get_property() (if you are using a delegate),
* or remember the @first_prop offset and add it to the values in the
* #GtkEditableProperties enumeration to get the property IDs for these
* properties.
*
* Returns: the number of properties that were installed
*/
guint
gtk_editable_install_properties (GObjectClass *object_class,
guint first_prop)
{
g_type_set_qdata (G_TYPE_FROM_CLASS (object_class),
quark_editable_data,
GUINT_TO_POINTER (first_prop));
g_object_class_override_property (object_class, first_prop + GTK_EDITABLE_PROP_TEXT, "text");
g_object_class_override_property (object_class, first_prop + GTK_EDITABLE_PROP_CURSOR_POSITION, "cursor-position");
g_object_class_override_property (object_class, first_prop + GTK_EDITABLE_PROP_SELECTION_BOUND, "selection-bound");
g_object_class_override_property (object_class, first_prop + GTK_EDITABLE_PROP_EDITABLE, "editable");
g_object_class_override_property (object_class, first_prop + GTK_EDITABLE_PROP_WIDTH_CHARS, "width-chars");
g_object_class_override_property (object_class, first_prop + GTK_EDITABLE_PROP_MAX_WIDTH_CHARS, "max-width-chars");
g_object_class_override_property (object_class, first_prop + GTK_EDITABLE_PROP_XALIGN, "xalign");
return GTK_EDITABLE_NUM_PROPERTIES;
}
static void
delegate_changed (GtkEditable *delegate,
gpointer editable)
{
g_signal_emit_by_name (editable, "changed");
}
static void
delegate_notify (GObject *object,
GParamSpec *pspec,
gpointer data)
{
gpointer iface;
iface = g_type_interface_peek (g_type_class_peek (G_OBJECT_TYPE (object)), gtk_editable_get_type ());
if (g_object_interface_find_property (iface, pspec->name))
g_object_notify (data, pspec->name);
}
/**
* gtk_editable_init_delegate:
* @editable: a #GtkEditable
*
* Sets up a delegate for #GtkEditable, assuming that the
* get_delegate vfunc in the #GtkEditable interface has been
* set up for the @editable's type.
*
* This is a helper function that should be called in instance init,
* after creating the delegate object.
*/
void
gtk_editable_init_delegate (GtkEditable *editable)
{
GtkEditable *delegate = get_delegate (editable);
g_signal_connect (delegate, "notify", G_CALLBACK (delegate_notify), editable);
g_signal_connect (delegate, "changed", G_CALLBACK (delegate_changed), editable);
}
/**
* gtk_editable_finish_delegate:
* @editable: a #GtkEditable
*
* Undoes the setup done by gtk_editable_init_delegate().
*
* This is a helper function that should be called from dispose,
* before removing the delegate object.
*/
void
gtk_editable_finish_delegate (GtkEditable *editable)
{
GtkEditable *delegate = get_delegate (editable);
g_signal_handlers_disconnect_by_func (delegate, delegate_notify, editable);
g_signal_handlers_disconnect_by_func (delegate, delegate_changed, editable);
}
/**
* gtk_editable_delegate_set_property:
* @object: a #GObject
* @prop_id: a property ID
* @value: value to set
* @pspec: the #GParamSpec for the property
*
* Sets a property on the #GtkEditable delegate for @object.
*
* This is a helper function that should be called in set_property,
* before handling your own properties.
*
* Returns: %TRUE if the property was found
*/
gboolean
gtk_editable_delegate_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkEditable *delegate = get_delegate (GTK_EDITABLE (object));
GType type = G_TYPE_FROM_INSTANCE (object);
guint first_prop;
first_prop = GPOINTER_TO_UINT (g_type_get_qdata (type, quark_editable_data));
if (prop_id < first_prop)
return FALSE;
switch (prop_id - first_prop)
{
case GTK_EDITABLE_PROP_TEXT:
gtk_editable_set_text (delegate, g_value_get_string (value));
break;
case GTK_EDITABLE_PROP_EDITABLE:
gtk_editable_set_editable (delegate, g_value_get_boolean (value));
break;
case GTK_EDITABLE_PROP_WIDTH_CHARS:
gtk_editable_set_width_chars (delegate, g_value_get_int (value));
break;
case GTK_EDITABLE_PROP_MAX_WIDTH_CHARS:
gtk_editable_set_max_width_chars (delegate, g_value_get_int (value));
break;
case GTK_EDITABLE_PROP_XALIGN:
gtk_editable_set_alignment (delegate, g_value_get_float (value));
break;
default:
return FALSE;
}
return TRUE;
}
/**
* gtk_editable_delegate_get_property:
* @object: a #GObject
* @prop_id: a property ID
* @value: value to set
* @pspec: the #GParamSpec for the property
*
* Gets a property of the #GtkEditable delegate for @object.
*
* This is helper function that should be called in get_property,
* before handling your own properties.
*
* Returns: %TRUE if the property was found
*/
gboolean
gtk_editable_delegate_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkEditable *delegate = get_delegate (GTK_EDITABLE (object));
int cursor_position, selection_bound;
GType type = G_TYPE_FROM_INSTANCE (object);
guint first_prop;
first_prop = GPOINTER_TO_UINT (g_type_get_qdata (type, quark_editable_data));
if (prop_id < first_prop)
return FALSE;
switch (prop_id - first_prop)
{
case GTK_EDITABLE_PROP_TEXT:
g_value_set_string (value, gtk_editable_get_text (delegate));
break;
case GTK_EDITABLE_PROP_CURSOR_POSITION:
gtk_editable_get_selection_bounds (delegate, &cursor_position, &selection_bound);
g_value_set_int (value, cursor_position);
break;
case GTK_EDITABLE_PROP_SELECTION_BOUND:
gtk_editable_get_selection_bounds (delegate, &cursor_position, &selection_bound);
g_value_set_int (value, selection_bound);
break;
case GTK_EDITABLE_PROP_EDITABLE:
g_value_set_boolean (value, gtk_editable_get_editable (delegate));
break;
case GTK_EDITABLE_PROP_WIDTH_CHARS:
g_value_set_int (value, gtk_editable_get_width_chars (delegate));
break;
case GTK_EDITABLE_PROP_MAX_WIDTH_CHARS:
g_value_set_int (value, gtk_editable_get_max_width_chars (delegate));
break;
case GTK_EDITABLE_PROP_XALIGN:
g_value_set_float (value, gtk_editable_get_alignment (delegate));
break;
default:
return FALSE;
}
return TRUE;
}
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