Creates a #GAction corresponding to the value of property property_name on object.
Activates the action.
Request for the state of action to be changed to value.
Checks if action is currently enabled.
Queries the name of action.
Queries the type of the parameter that must be given when activating action.
Queries the current state of action.
Requests a hint about the valid range of values for the state of action.
Queries the type of the state of action.
Set the GObject of a D ObjectG wrapper.
Get a pointer to the underlying C object.
Calls g_object_ref() on a GObject.
Calls g_object_unref() on a GObject.
Get the GType of an object.
GObject GType property.
Convenience method to return this cast to a type. For use in D with statements.
Template to get the D object from a C GObject and cast it to the given D object type.
Connect a D closure to an object signal.
Template for setting a GObject property.
Template for getting a GObject property.
Creates a binding between source_property on source and target_property on target.
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 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 gobject.object.ObjectG.refSink.
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.
Gets a named field from the objects table of associations (see gobject.object.ObjectG.setData).
Gets a property of an object.
This function gets back user data pointers stored via gobject.object.ObjectG.setQdata.
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.
Checks whether object has a floating[floating-ref] reference.
Emits a "notify" signal for the property property_name on object.
Emits a "notify" signal for the property specified by pspec on object.
Increase the reference count of object, and possibly remove the floating[floating-ref] reference, if object has a floating reference.
Releases all references to other objects. This can be used to break reference cycles.
Each object carries around a table of associations from strings to pointers. This function lets you set an association.
Sets a property on an object.
Remove a specified datum from the object's data associations, without invoking the association's destroy handler.
This function gets back user data pointers stored via gobject.object.ObjectG.setQdata 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:
Reverts the effect of a previous call to gobject.object.ObjectG.freezeNotify. The freeze count is decreased on object and when it reaches zero, queued "notify" signals are emitted.
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 gobject.closure.Closure.invalidate on it, in order to prevent invocations of the closure with a finalized (nonexisting) object. Also, gobject.object.ObjectG.ref_ and gobject.object.ObjectG.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.
Connect to Notify signal.
Checks if action_name is valid.
Parses a detailed action name into its separate name and target components.
Formats a detailed action name from action_name and target_value.
Activates the action.
Request for the state of action to be changed to value.
Checks if action is currently enabled.
Queries the name of action.
Queries the type of the parameter that must be given when activating action.
Queries the current state of action.
Requests a hint about the valid range of values for the state of action.
Queries the type of the state of action.
A gio.property_action.PropertyAction is a way to get a gio.action.Action with a state value reflecting and controlling the value of a gobject.object.ObjectG property.
The state of the action will correspond to the value of the property. Changing it will change the property (assuming the requested value matches the requirements as specified in the gobject.param_spec.ParamSpec).
Only the most common types are presently supported. Booleans are mapped to booleans, strings to strings, signed/unsigned integers to int32/uint32 and floats and doubles to doubles.
If the property is an enum then the state will be string-typed and conversion will automatically be performed between the enum value and ‘nick’ string as per the gobject.enum_value.EnumValue table.
Flags types are not currently supported.
Properties of object types, boxed types and pointer types are not supported and probably never will be.
Properties of glib.variant.VariantG types are not currently supported.
If the property is boolean-valued then the action will have a NULL parameter type, and activating the action (with no parameter) will toggle the value of the property.
In all other cases, the parameter type will correspond to the type of the property.
The general idea here is to reduce the number of locations where a particular piece of state is kept (and therefore has to be synchronised between). gio.property_action.PropertyAction does not have a separate state that is kept in sync with the property value — its state is the property value.
For example, it might be useful to create a gio.action.Action corresponding to the visible-child-name property of a [gtk.stack.Stack] so that the current page can be switched from a menu. The active radio indication in the menu is then directly determined from the active page of the gtk.stack.Stack.
An anti-example would be binding the active-id property on a [gtk.combo_box.ComboBox]. This is because the state of the combo box itself is probably uninteresting and is actually being used to control something else.
Another anti-example would be to bind to the visible-child-name property of a [gtk.stack.Stack] if this value is actually stored in gio.settings.Settings. In that case, the real source of the value is* gio.settings.Settings. If you want a gio.action.Action to control a setting stored in gio.settings.Settings, see gio.settings.Settings.createAction instead, and possibly combine its use with gio.settings.Settings.bind.