Creates a new GtkEntryCompletion object.
The GtkCellArea used to layout cell renderers in the treeview column.
If no area is specified when creating the entry completion with
[ctorGtk.EntryCompletion.new_with_area], a horizontally oriented
[classGtk.CellAreaBox] will be used.
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.
Determines whether the possible completions on the popup will appear in the entry as you navigate through them.
Determines whether the possible completions should be shown in a popup window.
Determines whether the completions popup window will be resized to the width of the entry.
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
[propertyGtk.EntryCompletion:inline-completion].
The column of the model containing the strings.
Note that the strings must be UTF-8.
Adds an attribute mapping to the list in cell_layout.
The column is the column of the model to get a value from, and the
attribute is the property on cell to be set from that value. So for
example if column 2 of the model contains strings, you could have the
“text” attribute of a GtkCellRendererText get its values from column 2.
In this context "attribute" and "property" are used interchangeably.
a GtkCellRenderer
a property on the renderer
the column position on the model to get the attribute from
Creates a binding between source_property on source and target_property
on target.
Whenever the source_property is changed the target_property is
updated using the same value. For instance:
g_object_bind_property (action, "active", widget, "sensitive", 0);
Will result in the "sensitive" property of the widget #GObject instance to be updated with the same value of the "active" property of the action #GObject instance.
If flags contains %G_BINDING_BIDIRECTIONAL then the binding will be mutual:
if target_property on target changes then the source_property on source
will be updated as well.
The binding will automatically be removed when either the source or the
target instances are finalized. To remove the binding without affecting the
source and the target you can just call g_object_unref() on the returned
#GBinding instance.
Removing the binding by calling g_object_unref() on it must only be done if
the binding, source and target are only used from a single thread and it
is clear that both source and target outlive the binding. Especially it
is not safe to rely on this if the binding, source or target can be
finalized from different threads. Keep another reference to the binding and
use g_binding_unbind() instead to be on the safe side.
A #GObject can have multiple bindings.
the property on source to bind
the target #GObject
the property on target to bind
flags to pass to #GBinding
Creates a binding between source_property on source and target_property
on target, allowing you to set the transformation functions to be used by
the binding.
This function is the language bindings friendly version of g_object_bind_property_full(), using #GClosures instead of function pointers.
the property on source to bind
the target #GObject
the property on target to bind
flags to pass to #GBinding
a #GClosure wrapping the transformation function from the source to the target, or %NULL to use the default
a #GClosure wrapping the transformation function from the target to the source, or %NULL to use the default
Unsets all the mappings on all renderers on cell_layout and
removes all renderers from cell_layout.
Clears all existing attributes previously set with gtk_cell_layout_set_attributes().
a GtkCellRenderer to clear the attribute mapping on
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.
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 [methodGtk.EntryCompletion.set_text_column] for details.
The text to complete for
This function is intended for #GObject implementations to re-enforce a [floating][floating-ref] object reference. Doing this is seldom required: all #GInitiallyUnowneds are created with a floating reference which usually just needs to be sunken by calling g_object_ref_sink().
Increases the freeze count on object. If the freeze count is
non-zero, the emission of "notify" signals on object is
stopped. The signals are queued until the freeze count is decreased
to zero. Duplicate notifications are squashed so that at most one
#GObject::notify signal is emitted for each property modified while the
object is frozen.
This is necessary for accessors that modify multiple properties to prevent premature notification while the object is still being modified.
Gets the ID of the buildable object.
GtkBuilder sets the name based on the ID attribute
of the
Returns the cell renderers which have been added to cell_layout.
Get the original text entered by the user that triggered the completion or %NULL if there’s no completion ongoing.
Gets a named field from the objects table of associations (see g_object_set_data()).
name of the key for that association
Returns whether the common prefix of the possible completions should be automatically inserted in the entry.
Returns %TRUE if inline-selection mode is turned on.
Returns the minimum key length as set for completion.
Returns whether the completions should be presented in a popup window.
Returns whether the completion popup window will be resized to the width of the entry.
Returns whether the completion popup window will appear even if there is only a single match.
Gets a property of an object.
The value can be:
In general, a copy is made of the property contents and the caller is responsible for freeing the memory by calling g_value_unset().
Note that g_object_get_property() is really intended for language bindings, g_object_get() is much more convenient for C programming.
the name of the property to get
return location for the property value
This function gets back user data pointers stored via g_object_set_qdata().
A #GQuark, naming the user data pointer
Returns the column in the model of completion to get strings from.
Gets n_properties properties for an object.
Obtained properties will be set to values. All properties must be valid.
Warnings will be emitted and undefined behaviour may result if invalid
properties are passed in.
the names of each property to get
the values of each property to get
Requests a prefix insertion.
Checks whether object has a [floating][floating-ref] reference.
Emits a "notify" signal for the property property_name on object.
When possible, eg. when signaling a property change from within the class that registered the property, you should use g_object_notify_by_pspec() instead.
Note that emission of the notify signal may be blocked with g_object_freeze_notify(). In this case, the signal emissions are queued and will be emitted (in reverse order) when g_object_thaw_notify() is called.
the name of a property installed on the class of object.
Emits a "notify" signal for the property specified by pspec on object.
This function omits the property name lookup, hence it is faster than g_object_notify().
One way to avoid using g_object_notify() from within the class that registered the properties, and using g_object_notify_by_pspec() instead, is to store the GParamSpec used with g_object_class_install_property() inside a static array, e.g.:
enum
{
PROP_0,
PROP_FOO,
PROP_LAST
};
static GParamSpec *properties[PROP_LAST];
static void
my_object_class_init (MyObjectClass *klass)
{
properties[PROP_FOO] = g_param_spec_int ("foo", "Foo", "The foo",
0, 100,
50,
G_PARAM_READWRITE);
g_object_class_install_property (gobject_class,
PROP_FOO,
properties[PROP_FOO]);
}
and then notify a change on the "foo" property with:
g_object_notify_by_pspec (self, properties[PROP_FOO]);
the #GParamSpec of a property installed on the class of object.
Adds the cell to the end of cell_layout. If expand is %FALSE, then the
cell is allocated no more space than it needs. Any unused space is
divided evenly between cells for which expand is %TRUE.
Note that reusing the same cell renderer is not supported.
a GtkCellRenderer
%TRUE if cell is to be given extra space allocated to cell_layout
Packs the cell into the beginning of cell_layout. If expand is %FALSE,
then the cell is allocated no more space than it needs. Any unused space
is divided evenly between cells for which expand is %TRUE.
Note that reusing the same cell renderer is not supported.
a GtkCellRenderer
%TRUE if cell is to be given extra space allocated to cell_layout
Increase the reference count of object, and possibly remove the
[floating][floating-ref] reference, if object has a floating reference.
In other words, if the object is floating, then this call "assumes ownership" of the floating reference, converting it to a normal reference by clearing the floating flag while leaving the reference count unchanged. If the object is not floating, then this call adds a new normal reference increasing the reference count by one.
Since GLib 2.56, the type of object will be propagated to the return type
under the same conditions as for g_object_ref().
Re-inserts cell at position.
Note that cell has already to be packed into cell_layout
for this to function properly.
a GtkCellRenderer to reorder
new position to insert cell at
Releases all references to other objects. This can be used to break reference cycles.
This function should only be called from object system implementations.
Sets the GtkCellLayoutDataFunc to use for cell_layout.
This function is used instead of the standard attributes mapping
for setting the column value, and should set the value of cell_layout’s
cell renderer(s) as appropriate.
func may be %NULL to remove a previously set function.
a GtkCellRenderer
the GtkCellLayoutDataFunc to use
Each object carries around a table of associations from strings to pointers. This function lets you set an association.
If the object already had an association with that name, the old association will be destroyed.
Internally, the key is converted to a #GQuark using g_quark_from_string().
This means a copy of key is kept permanently (even after object has been
finalized) — so it is recommended to only use a small, bounded set of values
for key in your program, to avoid the #GQuark storage growing unbounded.
name of the key
data to associate with that key
Sets whether the common prefix of the possible completions should be automatically inserted in the entry.
%TRUE to do inline completion
Sets whether it is possible to cycle through the possible completions inside the entry.
%TRUE to do inline selection
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.
the GtkEntryCompletionMatchFunc to use
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).
the minimum length of the key in order to start completing
Sets whether the completions should be presented in a popup window.
%TRUE to do popup completion
Sets whether the completion popup window will be resized to be the same width as the entry.
%TRUE to make the width of the popup the same as the entry
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 [propertyGtk.EntryCompletion:inline-completion].
%TRUE if the popup should appear even for a single match
Sets a property on an object.
the name of the property to set
the value
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
[propertyGtk.EntryCompletion:text-column] property directly.
the column in the model of completion to get strings from
Remove a specified datum from the object's data associations, without invoking the association's destroy handler.
name of the key
This function gets back user data pointers stored via
g_object_set_qdata() and removes the data from object
without invoking its destroy() function (if any was
set).
Usually, calling this function is only required to update
user data pointers with a destroy notifier, for example:
void
object_add_to_user_list (GObject *object,
const gchar *new_string)
{
// the quark, naming the object data
GQuark quark_string_list = g_quark_from_static_string ("my-string-list");
// retrieve the old string list
GList *list = g_object_steal_qdata (object, quark_string_list);
// prepend new string
list = g_list_prepend (list, g_strdup (new_string));
// this changed 'list', so we need to set it again
g_object_set_qdata_full (object, quark_string_list, list, free_string_list);
}
static void
free_string_list (gpointer data)
{
GList *node, *list = data;
for (node = list; node; node = node->next)
g_free (node->data);
g_list_free (list);
}
Using g_object_get_qdata() in the above example, instead of g_object_steal_qdata() would have left the destroy function set, and thus the partial string list would have been freed upon g_object_set_qdata_full().
A #GQuark, naming the user data pointer
Reverts the effect of a previous call to
g_object_freeze_notify(). The freeze count is decreased on object
and when it reaches zero, queued "notify" signals are emitted.
Duplicate notifications for each property are squashed so that at most one #GObject::notify signal is emitted for each property, in the reverse order in which they have been queued.
It is an error to call this function when the freeze count is zero.
Decreases the reference count of object. When its reference count
drops to 0, the object is finalized (i.e. its memory is freed).
If the pointer to the #GObject may be reused in future (for example, if it is an instance variable of another object), it is recommended to clear the pointer to %NULL rather than retain a dangling pointer to a potentially invalid #GObject instance. Use g_clear_object() for this.
Adds an attribute mapping to the list in cell_layout.
The column is the column of the model to get a value from, and the
attribute is the property on cell to be set from that value. So for
example if column 2 of the model contains strings, you could have the
“text” attribute of a GtkCellRendererText get its values from column 2.
In this context "attribute" and "property" are used interchangeably.
a GtkCellRenderer
a property on the renderer
the column position on the model to get the attribute from
Unsets all the mappings on all renderers on cell_layout and
removes all renderers from cell_layout.
Clears all existing attributes previously set with gtk_cell_layout_set_attributes().
a GtkCellRenderer to clear the attribute mapping on
Similar to gtk_buildable_parser_finished() but is
called once for each custom tag handled by the buildable.
a GtkBuilder
child object or %NULL for non-child tags
the name of the tag
user data created in custom_tag_start
Called at the end of each custom element handled by the buildable.
GtkBuilder used to construct this object
child object or %NULL for non-child tags
name of tag
user data that will be passed in to parser functions
Called for each unknown element under <child>.
a GtkBuilder used to construct this object
child object or %NULL for non-child tags
name of tag
Returns the cell renderers which have been added to cell_layout.
Emits a "notify" signal for the property property_name on object.
When possible, eg. when signaling a property change from within the class that registered the property, you should use g_object_notify_by_pspec() instead.
Note that emission of the notify signal may be blocked with g_object_freeze_notify(). In this case, the signal emissions are queued and will be emitted (in reverse order) when g_object_thaw_notify() is called.
Adds the cell to the end of cell_layout. If expand is %FALSE, then the
cell is allocated no more space than it needs. Any unused space is
divided evenly between cells for which expand is %TRUE.
Note that reusing the same cell renderer is not supported.
a GtkCellRenderer
%TRUE if cell is to be given extra space allocated to cell_layout
Packs the cell into the beginning of cell_layout. If expand is %FALSE,
then the cell is allocated no more space than it needs. Any unused space
is divided evenly between cells for which expand is %TRUE.
Note that reusing the same cell renderer is not supported.
a GtkCellRenderer
%TRUE if cell is to be given extra space allocated to cell_layout
Re-inserts cell at position.
Note that cell has already to be packed into cell_layout
for this to function properly.
a GtkCellRenderer to reorder
new position to insert cell at
Sets the GtkCellLayoutDataFunc to use for cell_layout.
This function is used instead of the standard attributes mapping
for setting the column value, and should set the value of cell_layout’s
cell renderer(s) as appropriate.
func may be %NULL to remove a previously set function.
a GtkCellRenderer
the GtkCellLayoutDataFunc to use
This function essentially limits the life time of the closure to
the life time of the object. That is, when the object is finalized,
the closure is invalidated by calling g_closure_invalidate() on
it, in order to prevent invocations of the closure with a finalized
(nonexisting) object. Also, g_object_ref() and g_object_unref() are
added as marshal guards to the closure, to ensure that an extra
reference count is held on object during invocation of the
closure. Usually, this function will be called on closures that
use this object as closure data.
#GClosure to watch
Find the #GParamSpec with the given name for an
interface. Generally, the interface vtable passed in as g_iface
will be the default vtable from g_type_default_interface_ref(), or,
if you know the interface has already been loaded,
g_type_default_interface_peek().
any interface vtable for the interface, or the default vtable for the interface
name of a property to look up.
Add a property to an interface; this is only useful for interfaces that are added to GObject-derived types. Adding a property to an interface forces all objects classes with that interface to have a compatible property. The compatible property could be a newly created #GParamSpec, but normally g_object_class_override_property() will be used so that the object class only needs to provide an implementation and inherits the property description, default value, bounds, and so forth from the interface property.
This function is meant to be called from the interface's default
vtable initialization function (the class_init member of
#GTypeInfo.) It must not be called after after class_init has
been called for any object types implementing this interface.
If pspec is a floating reference, it will be consumed.
any interface vtable for the interface, or the default vtable for the interface.
the #GParamSpec for the new property
Lists the properties of an interface.Generally, the interface
vtable passed in as g_iface will be the default vtable from
g_type_default_interface_ref(), or, if you know the interface has
already been loaded, g_type_default_interface_peek().
any interface vtable for the interface, or the default vtable for the interface
Creates a new GtkEntryCompletion object.
Creates a new GtkEntryCompletion object using the
specified area.
The GtkCellArea is used to layout cells in the underlying
GtkTreeViewColumn for the drop-down menu.
Creates a new instance of a #GObject subtype and sets its properties.
Construction parameters (see %G_PARAM_CONSTRUCT, %G_PARAM_CONSTRUCT_ONLY) which are not explicitly specified are set to their default values.
the type id of the #GObject subtype to instantiate
an array of #GParameter
GtkEntryCompletionis an auxiliary object to provide completion functionality forGtkEntry.It implements the [iface
Gtk.CellLayout] interface, to allow the user to add extra cells to theGtkTreeViewwith completion matches.“Completion functionality” means that when the user modifies the text in the entry,
GtkEntryCompletionchecks 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 [methodGtk.EntryCompletion.set_text_column]), but this can be overridden with a custom match function (see [methodGtk.EntryCompletion.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 [signal
Gtk.EntryCompletion::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 [method
Gtk.Entry.set_completion].GtkEntryCompletionuses a [classGtk.TreeModelFilter] model to represent the subset of the entire model that is currently matching. While theGtkEntryCompletionsignals [signalGtk.EntryCompletion::match-selected] and [signalGtk.EntryCompletion::cursor-on-match] take the original model and an iter pointing to that model as arguments, other callbacks and signals (such asGtkCellLayoutDataFuncor [signalGtk.CellArea::apply-attributes)] will generally take the filter model as argument. As long as you are only calling [methodGtk.TreeModel.get], this will make no difference to you. If for some reason, you need the original model, use [methodGtk.TreeModelFilter.get_model]. Don’t forget to use [methodGtk.TreeModelFilter.convert_iter_to_child_iter] to obtain a matching iter.