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gtk2/gtk/gtkentrycompletion.c
Carlos Garnacho 79090f1755 gtk/entrycompletion: Ensure to show first row when shown, not allocated 
This code was here in gtk3 to cater for the completion window being
positioned. That was only to meant once as long as the completion window
was shown.

This doesn't work as well for gtk4, ::size-allocate gets propagated from
the toplevel, so happens much more often for the completion window, this
ends up with the completion position being reset to the first row
frequently.

Do this simply once when popping up the completion, instead.

Fixes: https://gitlab.gnome.org/GNOME/gtk/-/issues/3083
2020-12-12 01:42:42 +01:00

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/* gtkentrycompletion.c
* Copyright (C) 2003 Kristian Rietveld <kris@gtk.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* SECTION:gtkentrycompletion
* @Short_description: Completion functionality for GtkEntry
* @Title: GtkEntryCompletion
*
* #GtkEntryCompletion is an auxiliary object to be used in conjunction with
* #GtkEntry to provide the completion functionality. It implements the
* #GtkCellLayout interface, to allow the user to add extra cells to the
* #GtkTreeView with completion matches.
*
* “Completion functionality” means that when the user modifies the text
* in the entry, #GtkEntryCompletion checks which rows in the model match
* the current content of the entry, and displays a list of matches.
* By default, the matching is done by comparing the entry text
* case-insensitively against the text column of the model (see
* gtk_entry_completion_set_text_column()), but this can be overridden
* with a custom match function (see gtk_entry_completion_set_match_func()).
*
* When the user selects a completion, the content of the entry is
* updated. By default, the content of the entry is replaced by the
* text column of the model, but this can be overridden by connecting
* to the #GtkEntryCompletion::match-selected signal and updating the
* entry in the signal handler. Note that you should return %TRUE from
* the signal handler to suppress the default behaviour.
*
* To add completion functionality to an entry, use gtk_entry_set_completion().
*
* GtkEntryCompletion uses a #GtkTreeModelFilter model to represent the
* subset of the entire model that is currently matching. While the
* GtkEntryCompletion signals #GtkEntryCompletion::match-selected and
* #GtkEntryCompletion::cursor-on-match take the original model and an
* iter pointing to that model as arguments, other callbacks and signals
* (such as #GtkCellLayoutDataFuncs or #GtkCellArea::apply-attributes)
* will generally take the filter model as argument. As long as you are
* only calling gtk_tree_model_get(), this will make no difference to
* you. If for some reason, you need the original model, use
* gtk_tree_model_filter_get_model(). Don’t forget to use
* gtk_tree_model_filter_convert_iter_to_child_iter() to obtain a
* matching iter.
*/
#include "config.h"
#include "gtkentrycompletion.h"
#include "gtkentryprivate.h"
#include "gtktextprivate.h"
#include "gtkcelllayout.h"
#include "gtkcellareabox.h"
#include "gtkintl.h"
#include "gtkcellrenderertext.h"
#include "gtktreeselection.h"
#include "gtktreeview.h"
#include "gtkscrolledwindow.h"
#include "gtksizerequest.h"
#include "gtkbox.h"
#include "gtkpopover.h"
#include "gtkentry.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkeventcontrollerfocus.h"
#include "gtkeventcontrollerkey.h"
#include "gtkgestureclick.h"
#include "gtkprivate.h"
#include "gtkwindowprivate.h"
#include "gtkwidgetprivate.h"
#include "gtknative.h"
#include <string.h>
#define PAGE_STEP 14
#define COMPLETION_TIMEOUT 100
/* signals */
enum
{
INSERT_PREFIX,
MATCH_SELECTED,
CURSOR_ON_MATCH,
NO_MATCHES,
LAST_SIGNAL
};
/* properties */
enum
{
PROP_0,
PROP_MODEL,
PROP_MINIMUM_KEY_LENGTH,
PROP_TEXT_COLUMN,
PROP_INLINE_COMPLETION,
PROP_POPUP_COMPLETION,
PROP_POPUP_SET_WIDTH,
PROP_POPUP_SINGLE_MATCH,
PROP_INLINE_SELECTION,
PROP_CELL_AREA,
NUM_PROPERTIES
};
static void gtk_entry_completion_cell_layout_init (GtkCellLayoutIface *iface);
static GtkCellArea* gtk_entry_completion_get_area (GtkCellLayout *cell_layout);
static void gtk_entry_completion_constructed (GObject *object);
static void gtk_entry_completion_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_entry_completion_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_entry_completion_finalize (GObject *object);
static void gtk_entry_completion_dispose (GObject *object);
static gboolean gtk_entry_completion_visible_func (GtkTreeModel *model,
GtkTreeIter *iter,
gpointer data);
static void gtk_entry_completion_list_activated (GtkTreeView *treeview,
GtkTreePath *path,
GtkTreeViewColumn *column,
gpointer user_data);
static void gtk_entry_completion_selection_changed (GtkTreeSelection *selection,
gpointer data);
static gboolean gtk_entry_completion_match_selected (GtkEntryCompletion *completion,
GtkTreeModel *model,
GtkTreeIter *iter);
static gboolean gtk_entry_completion_real_insert_prefix (GtkEntryCompletion *completion,
const char *prefix);
static gboolean gtk_entry_completion_cursor_on_match (GtkEntryCompletion *completion,
GtkTreeModel *model,
GtkTreeIter *iter);
static gboolean gtk_entry_completion_insert_completion (GtkEntryCompletion *completion,
GtkTreeModel *model,
GtkTreeIter *iter);
static void gtk_entry_completion_insert_completion_text (GtkEntryCompletion *completion,
const char *text);
static void connect_completion_signals (GtkEntryCompletion *completion);
static void disconnect_completion_signals (GtkEntryCompletion *completion);
static GParamSpec *entry_completion_props[NUM_PROPERTIES] = { NULL, };
static guint entry_completion_signals[LAST_SIGNAL] = { 0 };
/* GtkBuildable */
static void gtk_entry_completion_buildable_init (GtkBuildableIface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkEntryCompletion, gtk_entry_completion, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
gtk_entry_completion_cell_layout_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_entry_completion_buildable_init))
static void
gtk_entry_completion_class_init (GtkEntryCompletionClass *klass)
{
GObjectClass *object_class;
object_class = (GObjectClass *)klass;
object_class->constructed = gtk_entry_completion_constructed;
object_class->set_property = gtk_entry_completion_set_property;
object_class->get_property = gtk_entry_completion_get_property;
object_class->dispose = gtk_entry_completion_dispose;
object_class->finalize = gtk_entry_completion_finalize;
klass->match_selected = gtk_entry_completion_match_selected;
klass->insert_prefix = gtk_entry_completion_real_insert_prefix;
klass->cursor_on_match = gtk_entry_completion_cursor_on_match;
klass->no_matches = NULL;
/**
* GtkEntryCompletion::insert-prefix:
* @widget: the object which received the signal
* @prefix: the common prefix of all possible completions
*
* Gets emitted when the inline autocompletion is triggered.
* The default behaviour is to make the entry display the
* whole prefix and select the newly inserted part.
*
* Applications may connect to this signal in order to insert only a
* smaller part of the @prefix into the entry - e.g. the entry used in
* the #GtkFileChooser inserts only the part of the prefix up to the
* next '/'.
*
* Returns: %TRUE if the signal has been handled
*/
entry_completion_signals[INSERT_PREFIX] =
g_signal_new (I_("insert-prefix"),
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkEntryCompletionClass, insert_prefix),
_gtk_boolean_handled_accumulator, NULL,
_gtk_marshal_BOOLEAN__STRING,
G_TYPE_BOOLEAN, 1,
G_TYPE_STRING);
/**
* GtkEntryCompletion::match-selected:
* @widget: the object which received the signal
* @model: the #GtkTreeModel containing the matches
* @iter: a #GtkTreeIter positioned at the selected match
*
* Gets emitted when a match from the list is selected.
* The default behaviour is to replace the contents of the
* entry with the contents of the text column in the row
* pointed to by @iter.
*
* Note that @model is the model that was passed to
* gtk_entry_completion_set_model().
*
* Returns: %TRUE if the signal has been handled
*/
entry_completion_signals[MATCH_SELECTED] =
g_signal_new (I_("match-selected"),
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkEntryCompletionClass, match_selected),
_gtk_boolean_handled_accumulator, NULL,
_gtk_marshal_BOOLEAN__OBJECT_BOXED,
G_TYPE_BOOLEAN, 2,
GTK_TYPE_TREE_MODEL,
GTK_TYPE_TREE_ITER);
/**
* GtkEntryCompletion::cursor-on-match:
* @widget: the object which received the signal
* @model: the #GtkTreeModel containing the matches
* @iter: a #GtkTreeIter positioned at the selected match
*
* Gets emitted when a match from the cursor is on a match
* of the list. The default behaviour is to replace the contents
* of the entry with the contents of the text column in the row
* pointed to by @iter.
*
* Note that @model is the model that was passed to
* gtk_entry_completion_set_model().
*
* Returns: %TRUE if the signal has been handled
*/
entry_completion_signals[CURSOR_ON_MATCH] =
g_signal_new (I_("cursor-on-match"),
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkEntryCompletionClass, cursor_on_match),
_gtk_boolean_handled_accumulator, NULL,
_gtk_marshal_BOOLEAN__OBJECT_BOXED,
G_TYPE_BOOLEAN, 2,
GTK_TYPE_TREE_MODEL,
GTK_TYPE_TREE_ITER);
/**
* GtkEntryCompletion::no-matches:
* @widget: the object which received the signal
*
* Gets emitted when the filter model has zero
* number of rows in completion_complete method.
* (In other words when GtkEntryCompletion is out of
* suggestions)
*/
entry_completion_signals[NO_MATCHES] =
g_signal_new (I_("no-matches"),
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkEntryCompletionClass, no_matches),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
entry_completion_props[PROP_MODEL] =
g_param_spec_object ("model",
P_("Completion Model"),
P_("The model to find matches in"),
GTK_TYPE_TREE_MODEL,
GTK_PARAM_READWRITE);
entry_completion_props[PROP_MINIMUM_KEY_LENGTH] =
g_param_spec_int ("minimum-key-length",
P_("Minimum Key Length"),
P_("Minimum length of the search key in order to look up matches"),
0, G_MAXINT, 1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkEntryCompletion:text-column:
*
* The column of the model containing the strings.
* Note that the strings must be UTF-8.
*/
entry_completion_props[PROP_TEXT_COLUMN] =
g_param_spec_int ("text-column",
P_("Text column"),
P_("The column of the model containing the strings."),
-1, G_MAXINT, -1,
GTK_PARAM_READWRITE);
/**
* GtkEntryCompletion:inline-completion:
*
* Determines whether the common prefix of the possible completions
* should be inserted automatically in the entry. Note that this
* requires text-column to be set, even if you are using a custom
* match function.
**/
entry_completion_props[PROP_INLINE_COMPLETION] =
g_param_spec_boolean ("inline-completion",
P_("Inline completion"),
P_("Whether the common prefix should be inserted automatically"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkEntryCompletion:popup-completion:
*
* Determines whether the possible completions should be
* shown in a popup window.
**/
entry_completion_props[PROP_POPUP_COMPLETION] =
g_param_spec_boolean ("popup-completion",
P_("Popup completion"),
P_("Whether the completions should be shown in a popup window"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkEntryCompletion:popup-set-width:
*
* Determines whether the completions popup window will be
* resized to the width of the entry.
*/
entry_completion_props[PROP_POPUP_SET_WIDTH] =
g_param_spec_boolean ("popup-set-width",
P_("Popup set width"),
P_("If TRUE, the popup window will have the same size as the entry"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkEntryCompletion:popup-single-match:
*
* Determines whether the completions popup window will shown
* for a single possible completion. You probably want to set
* this to %FALSE if you are using
* [inline completion][GtkEntryCompletion--inline-completion].
*/
entry_completion_props[PROP_POPUP_SINGLE_MATCH] =
g_param_spec_boolean ("popup-single-match",
P_("Popup single match"),
P_("If TRUE, the popup window will appear for a single match."),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkEntryCompletion:inline-selection:
*
* Determines whether the possible completions on the popup
* will appear in the entry as you navigate through them.
*/
entry_completion_props[PROP_INLINE_SELECTION] =
g_param_spec_boolean ("inline-selection",
P_("Inline selection"),
P_("Your description here"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkEntryCompletion:cell-area:
*
* The #GtkCellArea used to layout cell renderers in the treeview column.
*
* If no area is specified when creating the entry completion with
* gtk_entry_completion_new_with_area() a horizontally oriented
* #GtkCellAreaBox will be used.
*/
entry_completion_props[PROP_CELL_AREA] =
g_param_spec_object ("cell-area",
P_("Cell Area"),
P_("The GtkCellArea used to layout cells"),
GTK_TYPE_CELL_AREA,
GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
g_object_class_install_properties (object_class, NUM_PROPERTIES, entry_completion_props);
}
static void
gtk_entry_completion_buildable_custom_tag_end (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *tagname,
gpointer data)
{
/* Just ignore the boolean return from here */
_gtk_cell_layout_buildable_custom_tag_end (buildable, builder, child, tagname, data);
}
static void
gtk_entry_completion_buildable_init (GtkBuildableIface *iface)
{
iface->add_child = _gtk_cell_layout_buildable_add_child;
iface->custom_tag_start = _gtk_cell_layout_buildable_custom_tag_start;
iface->custom_tag_end = gtk_entry_completion_buildable_custom_tag_end;
}
static void
gtk_entry_completion_cell_layout_init (GtkCellLayoutIface *iface)
{
iface->get_area = gtk_entry_completion_get_area;
}
static void
gtk_entry_completion_init (GtkEntryCompletion *completion)
{
completion->minimum_key_length = 1;
completion->text_column = -1;
completion->has_completion = FALSE;
completion->inline_completion = FALSE;
completion->popup_completion = TRUE;
completion->popup_set_width = TRUE;
completion->popup_single_match = TRUE;
completion->inline_selection = FALSE;
completion->filter_model = NULL;
}
static gboolean
propagate_to_entry (GtkEventControllerKey *key,
guint keyval,
guint keycode,
GdkModifierType modifiers,
GtkEntryCompletion *completion)
{
GtkText *text = gtk_entry_get_text_widget (GTK_ENTRY (completion->entry));
return gtk_event_controller_key_forward (key, GTK_WIDGET (text));
}
static void
gtk_entry_completion_constructed (GObject *object)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (object);
GtkTreeSelection *sel;
GtkEventController *controller;
G_OBJECT_CLASS (gtk_entry_completion_parent_class)->constructed (object);
if (!completion->cell_area)
{
completion->cell_area = gtk_cell_area_box_new ();
g_object_ref_sink (completion->cell_area);
}
/* completions */
completion->tree_view = gtk_tree_view_new ();
g_signal_connect (completion->tree_view, "row-activated",
G_CALLBACK (gtk_entry_completion_list_activated),
completion);
gtk_tree_view_set_enable_search (GTK_TREE_VIEW (completion->tree_view), FALSE);
gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (completion->tree_view), FALSE);
gtk_tree_view_set_hover_selection (GTK_TREE_VIEW (completion->tree_view), TRUE);
gtk_tree_view_set_activate_on_single_click (GTK_TREE_VIEW (completion->tree_view), TRUE);
sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (completion->tree_view));
gtk_tree_selection_set_mode (sel, GTK_SELECTION_SINGLE);
gtk_tree_selection_unselect_all (sel);
g_signal_connect (sel, "changed",
G_CALLBACK (gtk_entry_completion_selection_changed),
completion);
completion->first_sel_changed = TRUE;
completion->column = gtk_tree_view_column_new_with_area (completion->cell_area);
gtk_tree_view_append_column (GTK_TREE_VIEW (completion->tree_view), completion->column);
completion->scrolled_window = gtk_scrolled_window_new ();
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (completion->scrolled_window),
GTK_POLICY_NEVER,
GTK_POLICY_AUTOMATIC);
/* a nasty hack to get the completions treeview to size nicely */
gtk_widget_set_size_request (gtk_scrolled_window_get_vscrollbar (GTK_SCROLLED_WINDOW (completion->scrolled_window)),
-1, 0);
/* pack it all */
completion->popup_window = gtk_popover_new ();
gtk_popover_set_position (GTK_POPOVER (completion->popup_window), GTK_POS_BOTTOM);
gtk_popover_set_autohide (GTK_POPOVER (completion->popup_window), FALSE);
gtk_popover_set_has_arrow (GTK_POPOVER (completion->popup_window), FALSE);
gtk_widget_add_css_class (completion->popup_window, "entry-completion");
controller = gtk_event_controller_key_new ();
g_signal_connect (controller, "key-pressed",
G_CALLBACK (propagate_to_entry), completion);
g_signal_connect (controller, "key-released",
G_CALLBACK (propagate_to_entry), completion);
gtk_widget_add_controller (completion->popup_window, controller);
controller = GTK_EVENT_CONTROLLER (gtk_gesture_click_new ());
g_signal_connect_swapped (controller, "released",
G_CALLBACK (_gtk_entry_completion_popdown),
completion);
gtk_widget_add_controller (completion->popup_window, controller);
gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (completion->scrolled_window),
completion->tree_view);
gtk_widget_set_hexpand (completion->scrolled_window, TRUE);
gtk_widget_set_vexpand (completion->scrolled_window, TRUE);
gtk_popover_set_child (GTK_POPOVER (completion->popup_window), completion->scrolled_window);
}
static void
gtk_entry_completion_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (object);
GtkCellArea *area;
switch (prop_id)
{
case PROP_MODEL:
gtk_entry_completion_set_model (completion,
g_value_get_object (value));
break;
case PROP_MINIMUM_KEY_LENGTH:
gtk_entry_completion_set_minimum_key_length (completion,
g_value_get_int (value));
break;
case PROP_TEXT_COLUMN:
completion->text_column = g_value_get_int (value);
break;
case PROP_INLINE_COMPLETION:
gtk_entry_completion_set_inline_completion (completion,
g_value_get_boolean (value));
break;
case PROP_POPUP_COMPLETION:
gtk_entry_completion_set_popup_completion (completion,
g_value_get_boolean (value));
break;
case PROP_POPUP_SET_WIDTH:
gtk_entry_completion_set_popup_set_width (completion,
g_value_get_boolean (value));
break;
case PROP_POPUP_SINGLE_MATCH:
gtk_entry_completion_set_popup_single_match (completion,
g_value_get_boolean (value));
break;
case PROP_INLINE_SELECTION:
gtk_entry_completion_set_inline_selection (completion,
g_value_get_boolean (value));
break;
case PROP_CELL_AREA:
/* Construct-only, can only be assigned once */
area = g_value_get_object (value);
if (area)
{
if (completion->cell_area != NULL)
{
g_warning ("cell-area has already been set, ignoring construct property");
g_object_ref_sink (area);
g_object_unref (area);
}
else
completion->cell_area = g_object_ref_sink (area);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_entry_completion_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (object);
switch (prop_id)
{
case PROP_MODEL:
g_value_set_object (value,
gtk_entry_completion_get_model (completion));
break;
case PROP_MINIMUM_KEY_LENGTH:
g_value_set_int (value, gtk_entry_completion_get_minimum_key_length (completion));
break;
case PROP_TEXT_COLUMN:
g_value_set_int (value, gtk_entry_completion_get_text_column (completion));
break;
case PROP_INLINE_COMPLETION:
g_value_set_boolean (value, gtk_entry_completion_get_inline_completion (completion));
break;
case PROP_POPUP_COMPLETION:
g_value_set_boolean (value, gtk_entry_completion_get_popup_completion (completion));
break;
case PROP_POPUP_SET_WIDTH:
g_value_set_boolean (value, gtk_entry_completion_get_popup_set_width (completion));
break;
case PROP_POPUP_SINGLE_MATCH:
g_value_set_boolean (value, gtk_entry_completion_get_popup_single_match (completion));
break;
case PROP_INLINE_SELECTION:
g_value_set_boolean (value, gtk_entry_completion_get_inline_selection (completion));
break;
case PROP_CELL_AREA:
g_value_set_object (value, completion->cell_area);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_entry_completion_finalize (GObject *object)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (object);
g_free (completion->case_normalized_key);
g_free (completion->completion_prefix);
if (completion->match_notify)
(* completion->match_notify) (completion->match_data);
G_OBJECT_CLASS (gtk_entry_completion_parent_class)->finalize (object);
}
static void
gtk_entry_completion_dispose (GObject *object)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (object);
if (completion->entry)
gtk_entry_set_completion (GTK_ENTRY (completion->entry), NULL);
g_clear_object (&completion->cell_area);
G_OBJECT_CLASS (gtk_entry_completion_parent_class)->dispose (object);
}
/* implement cell layout interface (only need to return the underlying cell area) */
static GtkCellArea*
gtk_entry_completion_get_area (GtkCellLayout *cell_layout)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (cell_layout);
if (G_UNLIKELY (!completion->cell_area))
{
completion->cell_area = gtk_cell_area_box_new ();
g_object_ref_sink (completion->cell_area);
}
return completion->cell_area;
}
/* all those callbacks */
static gboolean
gtk_entry_completion_default_completion_func (GtkEntryCompletion *completion,
const char *key,
GtkTreeIter *iter,
gpointer user_data)
{
char *item = NULL;
char *normalized_string;
char *case_normalized_string;
gboolean ret = FALSE;
GtkTreeModel *model;
model = gtk_tree_model_filter_get_model (completion->filter_model);
g_return_val_if_fail (gtk_tree_model_get_column_type (model, completion->text_column) == G_TYPE_STRING,
FALSE);
gtk_tree_model_get (model, iter,
completion->text_column, &item,
-1);
if (item != NULL)
{
normalized_string = g_utf8_normalize (item, -1, G_NORMALIZE_ALL);
if (normalized_string != NULL)
{
case_normalized_string = g_utf8_casefold (normalized_string, -1);
if (!strncmp (key, case_normalized_string, strlen (key)))
ret = TRUE;
g_free (case_normalized_string);
}
g_free (normalized_string);
}
g_free (item);
return ret;
}
static gboolean
gtk_entry_completion_visible_func (GtkTreeModel *model,
GtkTreeIter *iter,
gpointer data)
{
gboolean ret = FALSE;
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (data);
if (!completion->case_normalized_key)
return ret;
if (completion->match_func)
ret = (* completion->match_func) (completion,
completion->case_normalized_key,
iter,
completion->match_data);
else if (completion->text_column >= 0)
ret = gtk_entry_completion_default_completion_func (completion,
completion->case_normalized_key,
iter,
NULL);
return ret;
}
static void
gtk_entry_completion_list_activated (GtkTreeView *treeview,
GtkTreePath *path,
GtkTreeViewColumn *column,
gpointer user_data)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (user_data);
GtkTreeIter iter;
gboolean entry_set;
GtkTreeModel *model;
GtkTreeIter child_iter;
GtkText *text = gtk_entry_get_text_widget (GTK_ENTRY (completion->entry));
gtk_tree_model_get_iter (GTK_TREE_MODEL (completion->filter_model), &iter, path);
gtk_tree_model_filter_convert_iter_to_child_iter (completion->filter_model,
&child_iter,
&iter);
model = gtk_tree_model_filter_get_model (completion->filter_model);
g_signal_handler_block (text, completion->changed_id);
g_signal_emit (completion, entry_completion_signals[MATCH_SELECTED],
0, model, &child_iter, &entry_set);
g_signal_handler_unblock (text, completion->changed_id);
_gtk_entry_completion_popdown (completion);
}
static void
gtk_entry_completion_selection_changed (GtkTreeSelection *selection,
gpointer data)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (data);
if (completion->first_sel_changed)
{
completion->first_sel_changed = FALSE;
if (gtk_widget_is_focus (completion->tree_view))
gtk_tree_selection_unselect_all (selection);
}
}
/* public API */
/**
* gtk_entry_completion_new:
*
* Creates a new #GtkEntryCompletion object.
*
* Returns: A newly created #GtkEntryCompletion object
*/
GtkEntryCompletion *
gtk_entry_completion_new (void)
{
GtkEntryCompletion *completion;
completion = g_object_new (GTK_TYPE_ENTRY_COMPLETION, NULL);
return completion;
}
/**
* gtk_entry_completion_new_with_area:
* @area: the #GtkCellArea used to layout cells
*
* Creates a new #GtkEntryCompletion object using the
* specified @area to layout cells in the underlying
* #GtkTreeViewColumn for the drop-down menu.
*
* Returns: A newly created #GtkEntryCompletion object
*/
GtkEntryCompletion *
gtk_entry_completion_new_with_area (GtkCellArea *area)
{
GtkEntryCompletion *completion;
completion = g_object_new (GTK_TYPE_ENTRY_COMPLETION, "cell-area", area, NULL);
return completion;
}
/**
* gtk_entry_completion_get_entry:
* @completion: a #GtkEntryCompletion
*
* Gets the entry @completion has been attached to.
*
* Returns: (transfer none): The entry @completion has been attached to
*/
GtkWidget *
gtk_entry_completion_get_entry (GtkEntryCompletion *completion)
{
g_return_val_if_fail (GTK_IS_ENTRY_COMPLETION (completion), NULL);
return completion->entry;
}
/**
* gtk_entry_completion_set_model:
* @completion: a #GtkEntryCompletion
* @model: (allow-none): the #GtkTreeModel
*
* Sets the model for a #GtkEntryCompletion. If @completion already has
* a model set, it will remove it before setting the new model.
* If model is %NULL, then it will unset the model.
*/
void
gtk_entry_completion_set_model (GtkEntryCompletion *completion,
GtkTreeModel *model)
{
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
if (!model)
{
gtk_tree_view_set_model (GTK_TREE_VIEW (completion->tree_view),
NULL);
_gtk_entry_completion_popdown (completion);
completion->filter_model = NULL;
return;
}
/* code will unref the old filter model (if any) */
completion->filter_model =
GTK_TREE_MODEL_FILTER (gtk_tree_model_filter_new (model, NULL));
gtk_tree_model_filter_set_visible_func (completion->filter_model,
gtk_entry_completion_visible_func,
completion,
NULL);
gtk_tree_view_set_model (GTK_TREE_VIEW (completion->tree_view),
GTK_TREE_MODEL (completion->filter_model));
g_object_unref (completion->filter_model);
g_object_notify_by_pspec (G_OBJECT (completion), entry_completion_props[PROP_MODEL]);
if (gtk_widget_get_visible (completion->popup_window))
_gtk_entry_completion_resize_popup (completion);
}
/**
* gtk_entry_completion_get_model:
* @completion: a #GtkEntryCompletion
*
* Returns the model the #GtkEntryCompletion is using as data source.
* Returns %NULL if the model is unset.
*
* Returns: (nullable) (transfer none): A #GtkTreeModel, or %NULL if none
* is currently being used
*/
GtkTreeModel *
gtk_entry_completion_get_model (GtkEntryCompletion *completion)
{
g_return_val_if_fail (GTK_IS_ENTRY_COMPLETION (completion), NULL);
if (!completion->filter_model)
return NULL;
return gtk_tree_model_filter_get_model (completion->filter_model);
}
/**
* gtk_entry_completion_set_match_func:
* @completion: a #GtkEntryCompletion
* @func: the #GtkEntryCompletionMatchFunc to use
* @func_data: user data for @func
* @func_notify: destroy notify for @func_data.
*
* Sets the match function for @completion to be @func. The match function
* is used to determine if a row should or should not be in the completion
* list.
*/
void
gtk_entry_completion_set_match_func (GtkEntryCompletion *completion,
GtkEntryCompletionMatchFunc func,
gpointer func_data,
GDestroyNotify func_notify)
{
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
if (completion->match_notify)
(* completion->match_notify) (completion->match_data);
completion->match_func = func;
completion->match_data = func_data;
completion->match_notify = func_notify;
}
/**
* gtk_entry_completion_set_minimum_key_length:
* @completion: a #GtkEntryCompletion
* @length: the minimum length of the key in order to start completing
*
* Requires the length of the search key for @completion to be at least
* @length. This is useful for long lists, where completing using a small
* key takes a lot of time and will come up with meaningless results anyway
* (ie, a too large dataset).
*/
void
gtk_entry_completion_set_minimum_key_length (GtkEntryCompletion *completion,
int length)
{
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
g_return_if_fail (length >= 0);
if (completion->minimum_key_length != length)
{
completion->minimum_key_length = length;
g_object_notify_by_pspec (G_OBJECT (completion),
entry_completion_props[PROP_MINIMUM_KEY_LENGTH]);
}
}
/**
* gtk_entry_completion_get_minimum_key_length:
* @completion: a #GtkEntryCompletion
*
* Returns the minimum key length as set for @completion.
*
* Returns: The currently used minimum key length
*/
int
gtk_entry_completion_get_minimum_key_length (GtkEntryCompletion *completion)
{
g_return_val_if_fail (GTK_IS_ENTRY_COMPLETION (completion), 0);
return completion->minimum_key_length;
}
/**
* gtk_entry_completion_complete:
* @completion: a #GtkEntryCompletion
*
* Requests a completion operation, or in other words a refiltering of the
* current list with completions, using the current key. The completion list
* view will be updated accordingly.
*/
void
gtk_entry_completion_complete (GtkEntryCompletion *completion)
{
char *tmp;
GtkTreeIter iter;
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
g_return_if_fail (GTK_IS_ENTRY (completion->entry));
if (!completion->filter_model)
return;
g_free (completion->case_normalized_key);
tmp = g_utf8_normalize (gtk_editable_get_text (GTK_EDITABLE (completion->entry)),
-1, G_NORMALIZE_ALL);
completion->case_normalized_key = g_utf8_casefold (tmp, -1);
g_free (tmp);
gtk_tree_model_filter_refilter (completion->filter_model);
if (!gtk_tree_model_get_iter_first (GTK_TREE_MODEL (completion->filter_model), &iter))
g_signal_emit (completion, entry_completion_signals[NO_MATCHES], 0);
if (gtk_widget_get_visible (completion->popup_window))
_gtk_entry_completion_resize_popup (completion);
}
/**
* gtk_entry_completion_set_text_column:
* @completion: a #GtkEntryCompletion
* @column: the column in the model of @completion to get strings from
*
* Convenience function for setting up the most used case of this code: a
* completion list with just strings. This function will set up @completion
* to have a list displaying all (and just) strings in the completion list,
* and to get those strings from @column in the model of @completion.
*
* This functions creates and adds a #GtkCellRendererText for the selected
* column. If you need to set the text column, but don't want the cell
* renderer, use g_object_set() to set the #GtkEntryCompletion:text-column
* property directly.
*/
void
gtk_entry_completion_set_text_column (GtkEntryCompletion *completion,
int column)
{
GtkCellRenderer *cell;
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
g_return_if_fail (column >= 0);
if (completion->text_column == column)
return;
completion->text_column = column;
cell = gtk_cell_renderer_text_new ();
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (completion),
cell, TRUE);
gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (completion),
cell,
"text", column);
g_object_notify_by_pspec (G_OBJECT (completion), entry_completion_props[PROP_TEXT_COLUMN]);
}
/**
* gtk_entry_completion_get_text_column:
* @completion: a #GtkEntryCompletion
*
* Returns the column in the model of @completion to get strings from.
*
* Returns: the column containing the strings
*/
int
gtk_entry_completion_get_text_column (GtkEntryCompletion *completion)
{
g_return_val_if_fail (GTK_IS_ENTRY_COMPLETION (completion), -1);
return completion->text_column;
}
/* private */
/* some nasty size requisition */
void
_gtk_entry_completion_resize_popup (GtkEntryCompletion *completion)
{
GtkAllocation allocation;
int matches, items, height;
GdkSurface *surface;
GtkRequisition entry_req;
GtkRequisition tree_req;
int width;
surface = gtk_native_get_surface (gtk_widget_get_native (completion->entry));
if (!surface)
return;
if (!completion->filter_model)
return;
gtk_widget_get_surface_allocation (completion->entry, &allocation);
gtk_widget_get_preferred_size (completion->entry,
&entry_req, NULL);
matches = gtk_tree_model_iter_n_children (GTK_TREE_MODEL (completion->filter_model), NULL);
/* Call get preferred size on the on the tree view to force it to validate its
* cells before calling into the cell size functions.
*/
gtk_widget_get_preferred_size (completion->tree_view,
&tree_req, NULL);
gtk_tree_view_column_cell_get_size (completion->column,
NULL, NULL, NULL, &height);
gtk_widget_realize (completion->tree_view);
items = MIN (matches, 10);
if (items <= 0)
gtk_widget_hide (completion->scrolled_window);
else
gtk_widget_show (completion->scrolled_window);
if (completion->popup_set_width)
width = allocation.width;
else
width = -1;
gtk_tree_view_columns_autosize (GTK_TREE_VIEW (completion->tree_view));
gtk_scrolled_window_set_min_content_width (GTK_SCROLLED_WINDOW (completion->scrolled_window), width);
gtk_widget_set_size_request (completion->popup_window, width, -1);
gtk_scrolled_window_set_min_content_height (GTK_SCROLLED_WINDOW (completion->scrolled_window), items * height);
gtk_popover_present (GTK_POPOVER (completion->popup_window));
}
static void
gtk_entry_completion_popup (GtkEntryCompletion *completion)
{
GtkText *text = gtk_entry_get_text_widget (GTK_ENTRY (completion->entry));
if (gtk_widget_get_mapped (completion->popup_window))
return;
if (!gtk_widget_get_mapped (GTK_WIDGET (text)))
return;
if (!gtk_widget_has_focus (GTK_WIDGET (text)))
return;
/* default on no match */
completion->current_selected = -1;
gtk_widget_realize (completion->popup_window);
_gtk_entry_completion_resize_popup (completion);
if (completion->filter_model)
{
GtkTreePath *path;
path = gtk_tree_path_new_from_indices (0, -1);
gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (completion->tree_view), path,
NULL, FALSE, 0.0, 0.0);
gtk_tree_path_free (path);
}
gtk_popover_popup (GTK_POPOVER (completion->popup_window));
}
void
_gtk_entry_completion_popdown (GtkEntryCompletion *completion)
{
if (!gtk_widget_get_mapped (completion->popup_window))
return;
gtk_popover_popdown (GTK_POPOVER (completion->popup_window));
}
static gboolean
gtk_entry_completion_match_selected (GtkEntryCompletion *completion,
GtkTreeModel *model,
GtkTreeIter *iter)
{
char *str = NULL;
gtk_tree_model_get (model, iter, completion->text_column, &str, -1);
gtk_editable_set_text (GTK_EDITABLE (completion->entry), str ? str : "");
/* move cursor to the end */
gtk_editable_set_position (GTK_EDITABLE (completion->entry), -1);
g_free (str);
return TRUE;
}
static gboolean
gtk_entry_completion_cursor_on_match (GtkEntryCompletion *completion,
GtkTreeModel *model,
GtkTreeIter *iter)
{
gtk_entry_completion_insert_completion (completion, model, iter);
return TRUE;
}
/**
* gtk_entry_completion_compute_prefix:
* @completion: the entry completion
* @key: The text to complete for
*
* Computes the common prefix that is shared by all rows in @completion
* that start with @key. If no row matches @key, %NULL will be returned.
* Note that a text column must have been set for this function to work,
* see gtk_entry_completion_set_text_column() for details.
*
* Returns: (nullable) (transfer full): The common prefix all rows starting with
* @key or %NULL if no row matches @key.
**/
char *
gtk_entry_completion_compute_prefix (GtkEntryCompletion *completion,
const char *key)
{
GtkTreeIter iter;
char *prefix = NULL;
gboolean valid;
if (completion->text_column < 0)
return NULL;
valid = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (completion->filter_model),
&iter);
while (valid)
{
char *text;
gtk_tree_model_get (GTK_TREE_MODEL (completion->filter_model),
&iter, completion->text_column, &text,
-1);
if (text && g_str_has_prefix (text, key))
{
if (!prefix)
prefix = g_strdup (text);
else
{
char *p = prefix;
char *q = text;
while (*p && *p == *q)
{
p++;
q++;
}
*p = '\0';
if (p > prefix)
{
/* strip a partial multibyte character */
q = g_utf8_find_prev_char (prefix, p);
switch (g_utf8_get_char_validated (q, p - q))
{
case (gunichar)-2:
case (gunichar)-1:
*q = 0;
break;
default: ;
}
}
}
}
g_free (text);
valid = gtk_tree_model_iter_next (GTK_TREE_MODEL (completion->filter_model),
&iter);
}
return prefix;
}
static gboolean
gtk_entry_completion_real_insert_prefix (GtkEntryCompletion *completion,
const char *prefix)
{
if (prefix)
{
int key_len;
int prefix_len;
const char *key;
prefix_len = g_utf8_strlen (prefix, -1);
key = gtk_editable_get_text (GTK_EDITABLE (completion->entry));
key_len = g_utf8_strlen (key, -1);
if (prefix_len > key_len)
{
int pos = prefix_len;
gtk_editable_insert_text (GTK_EDITABLE (completion->entry),
prefix + strlen (key), -1, &pos);
gtk_editable_select_region (GTK_EDITABLE (completion->entry),
key_len, prefix_len);
completion->has_completion = TRUE;
}
}
return TRUE;
}
/**
* gtk_entry_completion_get_completion_prefix:
* @completion: a #GtkEntryCompletion
*
* Get the original text entered by the user that triggered
* the completion or %NULL if there’s no completion ongoing.
*
* Returns: (nullable): the prefix for the current completion
*/
const char *
gtk_entry_completion_get_completion_prefix (GtkEntryCompletion *completion)
{
g_return_val_if_fail (GTK_IS_ENTRY_COMPLETION (completion), NULL);
return completion->completion_prefix;
}
static void
gtk_entry_completion_insert_completion_text (GtkEntryCompletion *completion,
const char *new_text)
{
int len;
GtkText *text = gtk_entry_get_text_widget (GTK_ENTRY (completion->entry));
GtkEntryBuffer *buffer = gtk_text_get_buffer (text);
if (completion->changed_id > 0)
g_signal_handler_block (text, completion->changed_id);
if (completion->insert_text_id > 0)
g_signal_handler_block (buffer, completion->insert_text_id);
gtk_editable_set_text (GTK_EDITABLE (completion->entry), new_text);
len = g_utf8_strlen (completion->completion_prefix, -1);
gtk_editable_select_region (GTK_EDITABLE (completion->entry), len, -1);
if (completion->changed_id > 0)
g_signal_handler_unblock (text, completion->changed_id);
if (completion->insert_text_id > 0)
g_signal_handler_unblock (buffer, completion->insert_text_id);
}
static gboolean
gtk_entry_completion_insert_completion (GtkEntryCompletion *completion,
GtkTreeModel *model,
GtkTreeIter *iter)
{
char *str = NULL;
if (completion->text_column < 0)
return FALSE;
gtk_tree_model_get (model, iter,
completion->text_column, &str,
-1);
gtk_entry_completion_insert_completion_text (completion, str);
g_free (str);
return TRUE;
}
/**
* gtk_entry_completion_insert_prefix:
* @completion: a #GtkEntryCompletion
*
* Requests a prefix insertion.
*/
void
gtk_entry_completion_insert_prefix (GtkEntryCompletion *completion)
{
gboolean done;
char *prefix;
GtkText *text = gtk_entry_get_text_widget (GTK_ENTRY (completion->entry));
GtkEntryBuffer *buffer = gtk_text_get_buffer (text);
if (completion->insert_text_id > 0)
g_signal_handler_block (buffer, completion->insert_text_id);
prefix = gtk_entry_completion_compute_prefix (completion,
gtk_editable_get_text (GTK_EDITABLE (completion->entry)));
if (prefix)
{
g_signal_emit (completion, entry_completion_signals[INSERT_PREFIX],
0, prefix, &done);
g_free (prefix);
}
if (completion->insert_text_id > 0)
g_signal_handler_unblock (buffer, completion->insert_text_id);
}
/**
* gtk_entry_completion_set_inline_completion:
* @completion: a #GtkEntryCompletion
* @inline_completion: %TRUE to do inline completion
*
* Sets whether the common prefix of the possible completions should
* be automatically inserted in the entry.
*/
void
gtk_entry_completion_set_inline_completion (GtkEntryCompletion *completion,
gboolean inline_completion)
{
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
inline_completion = inline_completion != FALSE;
if (completion->inline_completion != inline_completion)
{
completion->inline_completion = inline_completion;
g_object_notify_by_pspec (G_OBJECT (completion), entry_completion_props[PROP_INLINE_COMPLETION]);
}
}
/**
* gtk_entry_completion_get_inline_completion:
* @completion: a #GtkEntryCompletion
*
* Returns whether the common prefix of the possible completions should
* be automatically inserted in the entry.
*
* Returns: %TRUE if inline completion is turned on
*/
gboolean
gtk_entry_completion_get_inline_completion (GtkEntryCompletion *completion)
{
g_return_val_if_fail (GTK_IS_ENTRY_COMPLETION (completion), FALSE);
return completion->inline_completion;
}
/**
* gtk_entry_completion_set_popup_completion:
* @completion: a #GtkEntryCompletion
* @popup_completion: %TRUE to do popup completion
*
* Sets whether the completions should be presented in a popup window.
*/
void
gtk_entry_completion_set_popup_completion (GtkEntryCompletion *completion,
gboolean popup_completion)
{
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
popup_completion = popup_completion != FALSE;
if (completion->popup_completion != popup_completion)
{
completion->popup_completion = popup_completion;
g_object_notify_by_pspec (G_OBJECT (completion), entry_completion_props[PROP_POPUP_COMPLETION]);
}
}
/**
* gtk_entry_completion_get_popup_completion:
* @completion: a #GtkEntryCompletion
*
* Returns whether the completions should be presented in a popup window.
*
* Returns: %TRUE if popup completion is turned on
*/
gboolean
gtk_entry_completion_get_popup_completion (GtkEntryCompletion *completion)
{
g_return_val_if_fail (GTK_IS_ENTRY_COMPLETION (completion), TRUE);
return completion->popup_completion;
}
/**
* gtk_entry_completion_set_popup_set_width:
* @completion: a #GtkEntryCompletion
* @popup_set_width: %TRUE to make the width of the popup the same as the entry
*
* Sets whether the completion popup window will be resized to be the same
* width as the entry.
*/
void
gtk_entry_completion_set_popup_set_width (GtkEntryCompletion *completion,
gboolean popup_set_width)
{
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
popup_set_width = popup_set_width != FALSE;
if (completion->popup_set_width != popup_set_width)
{
completion->popup_set_width = popup_set_width;
g_object_notify_by_pspec (G_OBJECT (completion), entry_completion_props[PROP_POPUP_SET_WIDTH]);
}
}
/**
* gtk_entry_completion_get_popup_set_width:
* @completion: a #GtkEntryCompletion
*
* Returns whether the completion popup window will be resized to the
* width of the entry.
*
* Returns: %TRUE if the popup window will be resized to the width of
* the entry
*/
gboolean
gtk_entry_completion_get_popup_set_width (GtkEntryCompletion *completion)
{
g_return_val_if_fail (GTK_IS_ENTRY_COMPLETION (completion), TRUE);
return completion->popup_set_width;
}
/**
* gtk_entry_completion_set_popup_single_match:
* @completion: a #GtkEntryCompletion
* @popup_single_match: %TRUE if the popup should appear even for a single
* match
*
* Sets whether the completion popup window will appear even if there is
* only a single match. You may want to set this to %FALSE if you
* are using [inline completion][GtkEntryCompletion--inline-completion].
*/
void
gtk_entry_completion_set_popup_single_match (GtkEntryCompletion *completion,
gboolean popup_single_match)
{
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
popup_single_match = popup_single_match != FALSE;
if (completion->popup_single_match != popup_single_match)
{
completion->popup_single_match = popup_single_match;
g_object_notify_by_pspec (G_OBJECT (completion), entry_completion_props[PROP_POPUP_SINGLE_MATCH]);
}
}
/**
* gtk_entry_completion_get_popup_single_match:
* @completion: a #GtkEntryCompletion
*
* Returns whether the completion popup window will appear even if there is
* only a single match.
*
* Returns: %TRUE if the popup window will appear regardless of the
* number of matches
*/
gboolean
gtk_entry_completion_get_popup_single_match (GtkEntryCompletion *completion)
{
g_return_val_if_fail (GTK_IS_ENTRY_COMPLETION (completion), TRUE);
return completion->popup_single_match;
}
/**
* gtk_entry_completion_set_inline_selection:
* @completion: a #GtkEntryCompletion
* @inline_selection: %TRUE to do inline selection
*
* Sets whether it is possible to cycle through the possible completions
* inside the entry.
*/
void
gtk_entry_completion_set_inline_selection (GtkEntryCompletion *completion,
gboolean inline_selection)
{
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
inline_selection = inline_selection != FALSE;
if (completion->inline_selection != inline_selection)
{
completion->inline_selection = inline_selection;
g_object_notify_by_pspec (G_OBJECT (completion), entry_completion_props[PROP_INLINE_SELECTION]);
}
}
/**
* gtk_entry_completion_get_inline_selection:
* @completion: a #GtkEntryCompletion
*
* Returns %TRUE if inline-selection mode is turned on.
*
* Returns: %TRUE if inline-selection mode is on
*/
gboolean
gtk_entry_completion_get_inline_selection (GtkEntryCompletion *completion)
{
g_return_val_if_fail (GTK_IS_ENTRY_COMPLETION (completion), FALSE);
return completion->inline_selection;
}
static int
gtk_entry_completion_timeout (gpointer data)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (data);
completion->completion_timeout = 0;
if (completion->filter_model &&
g_utf8_strlen (gtk_editable_get_text (GTK_EDITABLE (completion->entry)), -1)
>= completion->minimum_key_length)
{
int matches;
gboolean popup_single;
gtk_entry_completion_complete (completion);
matches = gtk_tree_model_iter_n_children (GTK_TREE_MODEL (completion->filter_model), NULL);
gtk_tree_selection_unselect_all (gtk_tree_view_get_selection (GTK_TREE_VIEW (completion->tree_view)));
g_object_get (completion, "popup-single-match", &popup_single, NULL);
if (matches > (popup_single ? 0: 1))
{
if (gtk_widget_get_visible (completion->popup_window))
_gtk_entry_completion_resize_popup (completion);
else
gtk_entry_completion_popup (completion);
}
else
_gtk_entry_completion_popdown (completion);
}
else if (gtk_widget_get_visible (completion->popup_window))
_gtk_entry_completion_popdown (completion);
return G_SOURCE_REMOVE;
}
static inline gboolean
keyval_is_cursor_move (guint keyval)
{
if (keyval == GDK_KEY_Up || keyval == GDK_KEY_KP_Up)
return TRUE;
if (keyval == GDK_KEY_Down || keyval == GDK_KEY_KP_Down)
return TRUE;
if (keyval == GDK_KEY_Page_Up)
return TRUE;
if (keyval == GDK_KEY_Page_Down)
return TRUE;
return FALSE;
}
static gboolean
gtk_entry_completion_key_pressed (GtkEventControllerKey *controller,
guint keyval,
guint keycode,
GdkModifierType state,
gpointer user_data)
{
int matches;
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (user_data);
GtkWidget *widget = completion->entry;
GtkText *text = gtk_entry_get_text_widget (GTK_ENTRY (widget));
if (!completion->popup_completion)
return FALSE;
if (keyval == GDK_KEY_Return ||
keyval == GDK_KEY_KP_Enter ||
keyval == GDK_KEY_ISO_Enter ||
keyval == GDK_KEY_Escape)
{
if (completion->completion_timeout)
{
g_source_remove (completion->completion_timeout);
completion->completion_timeout = 0;
}
}
if (!gtk_widget_get_mapped (completion->popup_window))
return FALSE;
matches = gtk_tree_model_iter_n_children (GTK_TREE_MODEL (completion->filter_model), NULL);
if (keyval_is_cursor_move (keyval))
{
GtkTreePath *path = NULL;
if (keyval == GDK_KEY_Up || keyval == GDK_KEY_KP_Up)
{
if (completion->current_selected < 0)
completion->current_selected = matches - 1;
else
completion->current_selected--;
}
else if (keyval == GDK_KEY_Down || keyval == GDK_KEY_KP_Down)
{
if (completion->current_selected < matches - 1)
completion->current_selected++;
else
completion->current_selected = -1;
}
else if (keyval == GDK_KEY_Page_Up)
{
if (completion->current_selected < 0)
completion->current_selected = matches - 1;
else if (completion->current_selected == 0)
completion->current_selected = -1;
else if (completion->current_selected < matches)
{
completion->current_selected -= PAGE_STEP;
if (completion->current_selected < 0)
completion->current_selected = 0;
}
else
{
completion->current_selected -= PAGE_STEP;
if (completion->current_selected < matches - 1)
completion->current_selected = matches - 1;
}
}
else if (keyval == GDK_KEY_Page_Down)
{
if (completion->current_selected < 0)
completion->current_selected = 0;
else if (completion->current_selected < matches - 1)
{
completion->current_selected += PAGE_STEP;
if (completion->current_selected > matches - 1)
completion->current_selected = matches - 1;
}
else if (completion->current_selected == matches - 1)
{
completion->current_selected = -1;
}
else
{
completion->current_selected += PAGE_STEP;
if (completion->current_selected > matches - 1)
completion->current_selected = matches - 1;
}
}
if (completion->current_selected < 0)
{
gtk_tree_selection_unselect_all (gtk_tree_view_get_selection (GTK_TREE_VIEW (completion->tree_view)));
if (completion->inline_selection &&
completion->completion_prefix)
{
gtk_editable_set_text (GTK_EDITABLE (completion->entry),
completion->completion_prefix);
gtk_editable_set_position (GTK_EDITABLE (widget), -1);
}
}
else if (completion->current_selected < matches)
{
path = gtk_tree_path_new_from_indices (completion->current_selected, -1);
gtk_tree_view_set_cursor (GTK_TREE_VIEW (completion->tree_view),
path, NULL, FALSE);
if (completion->inline_selection)
{
GtkTreeIter iter;
GtkTreeIter child_iter;
GtkTreeModel *model = NULL;
GtkTreeSelection *sel;
gboolean entry_set;
sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (completion->tree_view));
if (!gtk_tree_selection_get_selected (sel, &model, &iter))
return FALSE;
gtk_tree_model_filter_convert_iter_to_child_iter (GTK_TREE_MODEL_FILTER (model), &child_iter, &iter);
model = gtk_tree_model_filter_get_model (GTK_TREE_MODEL_FILTER (model));
if (completion->completion_prefix == NULL)
completion->completion_prefix = g_strdup (gtk_editable_get_text (GTK_EDITABLE (completion->entry)));
g_signal_emit_by_name (completion, "cursor-on-match", model,
&child_iter, &entry_set);
}
}
gtk_tree_path_free (path);
return TRUE;
}
else if (keyval == GDK_KEY_Escape ||
keyval == GDK_KEY_Left ||
keyval == GDK_KEY_KP_Left ||
keyval == GDK_KEY_Right ||
keyval == GDK_KEY_KP_Right)
{
gboolean retval = TRUE;
gtk_entry_reset_im_context (GTK_ENTRY (widget));
_gtk_entry_completion_popdown (completion);
if (completion->current_selected < 0)
{
retval = FALSE;
goto keypress_completion_out;
}
else if (completion->inline_selection)
{
/* Escape rejects the tentative completion */
if (keyval == GDK_KEY_Escape)
{
if (completion->completion_prefix)
gtk_editable_set_text (GTK_EDITABLE (completion->entry),
completion->completion_prefix);
else
gtk_editable_set_text (GTK_EDITABLE (completion->entry), "");
}
/* Move the cursor to the end for Right/Esc */
if (keyval == GDK_KEY_Right ||
keyval == GDK_KEY_KP_Right ||
keyval == GDK_KEY_Escape)
gtk_editable_set_position (GTK_EDITABLE (widget), -1);
/* Let the default keybindings run for Left, i.e. either move to the
* * previous character or select word if a modifier is used */
else
retval = FALSE;
}
keypress_completion_out:
if (completion->inline_selection)
g_clear_pointer (&completion->completion_prefix, g_free);
return retval;
}
else if (keyval == GDK_KEY_Tab ||
keyval == GDK_KEY_KP_Tab ||
keyval == GDK_KEY_ISO_Left_Tab)
{
gtk_entry_reset_im_context (GTK_ENTRY (widget));
_gtk_entry_completion_popdown (completion);
g_clear_pointer (&completion->completion_prefix, g_free);
return FALSE;
}
else if (keyval == GDK_KEY_ISO_Enter ||
keyval == GDK_KEY_KP_Enter ||
keyval == GDK_KEY_Return)
{
GtkTreeIter iter;
GtkTreeModel *model = NULL;
GtkTreeModel *child_model;
GtkTreeIter child_iter;
GtkTreeSelection *sel;
gboolean retval = TRUE;
gtk_entry_reset_im_context (GTK_ENTRY (widget));
_gtk_entry_completion_popdown (completion);
if (completion->current_selected < matches)
{
gboolean entry_set;
sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (completion->tree_view));
if (gtk_tree_selection_get_selected (sel, &model, &iter))
{
gtk_tree_model_filter_convert_iter_to_child_iter (GTK_TREE_MODEL_FILTER (model), &child_iter, &iter);
child_model = gtk_tree_model_filter_get_model (GTK_TREE_MODEL_FILTER (model));
g_signal_handler_block (text, completion->changed_id);
g_signal_emit_by_name (completion, "match-selected",
child_model, &child_iter, &entry_set);
g_signal_handler_unblock (text, completion->changed_id);
if (!entry_set)
{
char *str = NULL;
gtk_tree_model_get (model, &iter,
completion->text_column, &str,
-1);
gtk_editable_set_text (GTK_EDITABLE (widget), str);
/* move the cursor to the end */
gtk_editable_set_position (GTK_EDITABLE (widget), -1);
g_free (str);
}
}
else
retval = FALSE;
}
g_clear_pointer (&completion->completion_prefix, g_free);
return retval;
}
g_clear_pointer (&completion->completion_prefix, g_free);
return FALSE;
}
static void
gtk_entry_completion_changed (GtkWidget *widget,
gpointer user_data)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (user_data);
if (!completion->popup_completion)
return;
/* (re)install completion timeout */
if (completion->completion_timeout)
{
g_source_remove (completion->completion_timeout);
completion->completion_timeout = 0;
}
if (!gtk_editable_get_text (GTK_EDITABLE (widget)))
return;
/* no need to normalize for this test */
if (completion->minimum_key_length > 0 &&
strcmp ("", gtk_editable_get_text (GTK_EDITABLE (widget))) == 0)
{
if (gtk_widget_get_visible (completion->popup_window))
_gtk_entry_completion_popdown (completion);
return;
}
completion->completion_timeout =
g_timeout_add (COMPLETION_TIMEOUT,
gtk_entry_completion_timeout,
completion);
g_source_set_name_by_id (completion->completion_timeout, "[gtk] gtk_entry_completion_timeout");
}
static gboolean
check_completion_callback (GtkEntryCompletion *completion)
{
completion->check_completion_idle = NULL;
gtk_entry_completion_complete (completion);
gtk_entry_completion_insert_prefix (completion);
return FALSE;
}
static void
clear_completion_callback (GObject *text,
GParamSpec *pspec,
GtkEntryCompletion *completion)
{
if (!completion->inline_completion)
return;
if (pspec->name == I_("cursor-position") ||
pspec->name == I_("selection-bound"))
completion->has_completion = FALSE;
}
static gboolean
accept_completion_callback (GtkEntryCompletion *completion)
{
if (!completion->inline_completion)
return FALSE;
if (completion->has_completion)
gtk_editable_set_position (GTK_EDITABLE (completion->entry),
gtk_entry_buffer_get_length (gtk_entry_get_buffer (GTK_ENTRY (completion->entry))));
return FALSE;
}
static void
text_focus_out (GtkEntryCompletion *completion)
{
if (!gtk_widget_get_mapped (completion->popup_window))
accept_completion_callback (completion);
}
static void
completion_inserted_text_callback (GtkEntryBuffer *buffer,
guint position,
const char *text,
guint length,
GtkEntryCompletion *completion)
{
if (!completion->inline_completion)
return;
/* idle to update the selection based on the file list */
if (completion->check_completion_idle == NULL)
{
completion->check_completion_idle = g_idle_source_new ();
g_source_set_priority (completion->check_completion_idle, G_PRIORITY_HIGH);
g_source_set_closure (completion->check_completion_idle,
g_cclosure_new_object (G_CALLBACK (check_completion_callback),
G_OBJECT (completion)));
g_source_attach (completion->check_completion_idle, NULL);
g_source_set_name (completion->check_completion_idle, "[gtk] check_completion_callback");
}
}
static void
connect_completion_signals (GtkEntryCompletion *completion)
{
GtkEventController *controller;
GtkText *text = gtk_entry_get_text_widget (GTK_ENTRY (completion->entry));
GtkEntryBuffer *buffer = gtk_text_get_buffer (text);
controller = completion->entry_key_controller = gtk_event_controller_key_new ();
gtk_event_controller_set_name (controller, "gtk-entry-completion");
g_signal_connect (controller, "key-pressed",
G_CALLBACK (gtk_entry_completion_key_pressed), completion);
gtk_widget_add_controller (GTK_WIDGET (text), controller);
controller = completion->entry_focus_controller = gtk_event_controller_focus_new ();
gtk_event_controller_set_name (controller, "gtk-entry-completion");
g_signal_connect_swapped (controller, "leave", G_CALLBACK (text_focus_out), completion);
gtk_widget_add_controller (GTK_WIDGET (text), controller);
completion->changed_id =
g_signal_connect (text, "changed", G_CALLBACK (gtk_entry_completion_changed), completion);
completion->insert_text_id =
g_signal_connect (buffer, "inserted-text", G_CALLBACK (completion_inserted_text_callback), completion);
g_signal_connect (text, "notify", G_CALLBACK (clear_completion_callback), completion);
g_signal_connect_swapped (text, "activate", G_CALLBACK (accept_completion_callback), completion);
}
static void
disconnect_completion_signals (GtkEntryCompletion *completion)
{
GtkText *text = gtk_entry_get_text_widget (GTK_ENTRY (completion->entry));
GtkEntryBuffer *buffer = gtk_text_get_buffer (text);
gtk_widget_remove_controller (GTK_WIDGET (text), completion->entry_key_controller);
gtk_widget_remove_controller (GTK_WIDGET (text), completion->entry_focus_controller);
if (completion->changed_id > 0 &&
g_signal_handler_is_connected (text, completion->changed_id))
{
g_signal_handler_disconnect (text, completion->changed_id);
completion->changed_id = 0;
}
if (completion->insert_text_id > 0 &&
g_signal_handler_is_connected (buffer, completion->insert_text_id))
{
g_signal_handler_disconnect (buffer, completion->insert_text_id);
completion->insert_text_id = 0;
}
g_signal_handlers_disconnect_by_func (text, G_CALLBACK (clear_completion_callback), completion);
g_signal_handlers_disconnect_by_func (text, G_CALLBACK (accept_completion_callback), completion);
}
void
_gtk_entry_completion_disconnect (GtkEntryCompletion *completion)
{
if (completion->completion_timeout)
{
g_source_remove (completion->completion_timeout);
completion->completion_timeout = 0;
}
if (completion->check_completion_idle)
{
g_source_destroy (completion->check_completion_idle);
completion->check_completion_idle = NULL;
}
if (gtk_widget_get_mapped (completion->popup_window))
_gtk_entry_completion_popdown (completion);
disconnect_completion_signals (completion);
gtk_widget_unparent (completion->popup_window);
completion->entry = NULL;
}
void
_gtk_entry_completion_connect (GtkEntryCompletion *completion,
GtkEntry *entry)
{
completion->entry = GTK_WIDGET (entry);
gtk_widget_set_parent (completion->popup_window, GTK_WIDGET (entry));
connect_completion_signals (completion);
}
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