Class: Gtk::PropertyExpression

Inherits:

Expression

• Object
• Expression
• Gtk::PropertyExpression

Defined in:

(unknown)

Overview

A GObject property value in a GtkExpression.

Instance Method Summary

• #expression ⇒ Gtk::Expression

  Gets the expression specifying the object of a property expression.

• #initialize(expression, pspec) ⇒ Gtk::PropertyExpression constructor

  Creates an expression that looks up a property.

• #pspec ⇒ GObject::ParamSpec

  Gets the GParamSpec specifying the property of a property expression.

Methods inherited from Expression

#bind, #evaluate, #is_static, #ref, #unref, #value_type, #watch

Constructor Details

#initialize(expression, pspec) ⇒ Gtk::PropertyExpression

Creates an expression that looks up a property.

The object to use is found by evaluating the expression, or using the this argument when expression is NULL.

If the resulting object conforms to this_type, its property specified by pspec will be queried. Otherwise, this expression's evaluation will fail.

Parameters:

• expression (Gtk::Expression) —

  Expression to evaluate to get the object to query or NULL to query the this object

• pspec (GObject::ParamSpec) —

  the GParamSpec for the property to query

Instance Method Details

#expression ⇒ Gtk::Expression

Gets the expression specifying the object of a property expression.

Returns:

• (Gtk::Expression) —

  the object expression

#pspec ⇒ GObject::ParamSpec

Gets the GParamSpec specifying the property of a property expression.

Returns:

• (GObject::ParamSpec) —

  the GParamSpec for the property