forked from AuroraMiddleware/gtk
466 lines
14 KiB
C
466 lines
14 KiB
C
/* 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 gchar *text,
|
||
* gint length,
|
||
* gint *position,
|
||
* gpointer data)
|
||
* {
|
||
* gchar *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);
|
||
* }
|
||
* ]|
|
||
*/
|
||
|
||
#include "config.h"
|
||
#include <string.h>
|
||
|
||
#include "gtkeditable.h"
|
||
#include "gtkmarshalers.h"
|
||
#include "gtkintl.h"
|
||
|
||
|
||
static void gtk_editable_base_init (gpointer g_class);
|
||
|
||
|
||
GType
|
||
gtk_editable_get_type (void)
|
||
{
|
||
static GType editable_type = 0;
|
||
|
||
if (!editable_type)
|
||
{
|
||
const GTypeInfo editable_info =
|
||
{
|
||
sizeof (GtkEditableInterface), /* class_size */
|
||
gtk_editable_base_init, /* base_init */
|
||
NULL, /* base_finalize */
|
||
};
|
||
|
||
editable_type = g_type_register_static (G_TYPE_INTERFACE, I_("GtkEditable"),
|
||
&editable_info, 0);
|
||
}
|
||
|
||
return editable_type;
|
||
}
|
||
|
||
static void
|
||
gtk_editable_base_init (gpointer g_class)
|
||
{
|
||
static gboolean initialized = FALSE;
|
||
|
||
if (! initialized)
|
||
{
|
||
/**
|
||
* GtkEditable::insert-text:
|
||
* @editable: the object which received the signal
|
||
* @new_text: the new text to insert
|
||
* @new_text_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,
|
||
_gtk_marshal_VOID__VOID,
|
||
G_TYPE_NONE, 0);
|
||
|
||
initialized = TRUE;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_editable_insert_text: (virtual do_insert_text)
|
||
* @editable: a #GtkEditable
|
||
* @new_text: the text to append
|
||
* @new_text_length: the length of the text in bytes, or -1
|
||
* @position: (inout): location of the position text will be inserted at
|
||
*
|
||
* Inserts @new_text_length bytes of @new_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 gchar *new_text,
|
||
gint new_text_length,
|
||
gint *position)
|
||
{
|
||
g_return_if_fail (GTK_IS_EDITABLE (editable));
|
||
g_return_if_fail (position != NULL);
|
||
|
||
if (new_text_length < 0)
|
||
new_text_length = strlen (new_text);
|
||
|
||
GTK_EDITABLE_GET_IFACE (editable)->do_insert_text (editable, new_text, new_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,
|
||
gint start_pos,
|
||
gint 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.
|
||
*
|
||
* Return value: 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.
|
||
*/
|
||
gchar *
|
||
gtk_editable_get_chars (GtkEditable *editable,
|
||
gint start_pos,
|
||
gint end_pos)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_EDITABLE (editable), NULL);
|
||
|
||
return GTK_EDITABLE_GET_IFACE (editable)->get_chars (editable, start_pos, end_pos);
|
||
}
|
||
|
||
/**
|
||
* 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,
|
||
gint position)
|
||
{
|
||
g_return_if_fail (GTK_IS_EDITABLE (editable));
|
||
|
||
GTK_EDITABLE_GET_IFACE (editable)->set_position (editable, 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.
|
||
*
|
||
* Return value: the cursor position
|
||
*/
|
||
gint
|
||
gtk_editable_get_position (GtkEditable *editable)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_EDITABLE (editable), 0);
|
||
|
||
return GTK_EDITABLE_GET_IFACE (editable)->get_position (editable);
|
||
}
|
||
|
||
/**
|
||
* 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.
|
||
*
|
||
* Return value: %TRUE if an area is selected, %FALSE otherwise
|
||
*/
|
||
gboolean
|
||
gtk_editable_get_selection_bounds (GtkEditable *editable,
|
||
gint *start_pos,
|
||
gint *end_pos)
|
||
{
|
||
gint 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)
|
||
{
|
||
gint 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,
|
||
gint start_pos,
|
||
gint 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_cut_clipboard:
|
||
* @editable: a #GtkEditable
|
||
*
|
||
* Removes the contents of the currently selected content in the editable and
|
||
* puts it on the clipboard.
|
||
*/
|
||
void
|
||
gtk_editable_cut_clipboard (GtkEditable *editable)
|
||
{
|
||
g_return_if_fail (GTK_IS_EDITABLE (editable));
|
||
|
||
g_signal_emit_by_name (editable, "cut-clipboard");
|
||
}
|
||
|
||
/**
|
||
* gtk_editable_copy_clipboard:
|
||
* @editable: a #GtkEditable
|
||
*
|
||
* Copies the contents of the currently selected content in the editable and
|
||
* puts it on the clipboard.
|
||
*/
|
||
void
|
||
gtk_editable_copy_clipboard (GtkEditable *editable)
|
||
{
|
||
g_return_if_fail (GTK_IS_EDITABLE (editable));
|
||
|
||
g_signal_emit_by_name (editable, "copy-clipboard");
|
||
}
|
||
|
||
/**
|
||
* gtk_editable_paste_clipboard:
|
||
* @editable: a #GtkEditable
|
||
*
|
||
* Pastes the content of the clipboard to the current position of the
|
||
* cursor in the editable.
|
||
*/
|
||
void
|
||
gtk_editable_paste_clipboard (GtkEditable *editable)
|
||
{
|
||
g_return_if_fail (GTK_IS_EDITABLE (editable));
|
||
|
||
g_signal_emit_by_name (editable, "paste-clipboard");
|
||
}
|
||
|
||
/**
|
||
* 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 != FALSE,
|
||
NULL);
|
||
}
|
||
|
||
/**
|
||
* gtk_editable_get_editable:
|
||
* @editable: a #GtkEditable
|
||
*
|
||
* Retrieves whether @editable is editable. See
|
||
* gtk_editable_set_editable().
|
||
*
|
||
* Return value: %TRUE if @editable is editable.
|
||
*/
|
||
gboolean
|
||
gtk_editable_get_editable (GtkEditable *editable)
|
||
{
|
||
gboolean value;
|
||
|
||
g_return_val_if_fail (GTK_IS_EDITABLE (editable), FALSE);
|
||
|
||
g_object_get (editable, "editable", &value, NULL);
|
||
|
||
return value;
|
||
}
|