-(define-condition property-access-error (error)
- ((property-name :initarg :property-name :reader property-access-error-property-name)
- (class-name :initarg :class-name :reader property-access-error-class-name)
- (message :initarg :message :reader property-access-error-message))
- (:report (lambda (condition stream)
- (format stream "Error accessing property '~A' on class '~A': ~A"
- (property-access-error-property-name condition)
- (property-access-error-class-name condition)
- (property-access-error-message condition)))))
-
-(define-condition property-unreadable-error (property-access-error)
- ()
- (:default-initargs :message "property is not readable"))
-
-(define-condition property-unwritable-error (property-access-error)
- ()
- (:default-initargs :message "property is not writable"))
-
-(defun g-param-spec-property-type (param-spec property-name object-type assert-readable assert-writable)
- (when (null-pointer-p param-spec)
- (error "Property ~A on type ~A is not found"
- property-name
- (g-type-name object-type)))
- (when (and assert-readable
- (not (member :readable
- (foreign-slot-value param-spec
- 'g-param-spec
- :flags))))
- (error 'property-unreadable-error
- :property-name property-name
- :class-name (g-type-name object-type)))
- (when (and assert-writable
- (not (member :writable
- (foreign-slot-value param-spec
- 'g-param-spec
- :flags))))
- (error 'property-unwritable-error
- :property-name property-name
- :class-name (g-type-name object-type)))
- (foreign-slot-value param-spec 'g-param-spec :value-type))
-
-(defun g-object-type-property-type (object-type property-name
- &key assert-readable assert-writable)
- (let* ((object-class (g-type-class-ref object-type))
- (param-spec (g-object-class-find-property object-class property-name)))
- (unwind-protect
- (g-param-spec-property-type param-spec property-name object-type assert-readable assert-writable)
- (g-type-class-unref object-class))))
-
-(defun g-object-property-type (object property-name
- &key assert-readable assert-writable)
- (g-object-type-property-type (g-type-from-object (ensure-object-pointer object))
- property-name
- :assert-readable assert-readable
- :assert-writable assert-writable))
-
-(defun g-object-call-constructor (object-type args-names args-values
- &optional args-types)
- (unless args-types
- (setf args-types
- (mapcar (lambda (name)
- (g-object-type-property-type object-type name))
- args-names)))
- (let ((args-count (length args-names)))
- (with-foreign-object (parameters 'g-parameter args-count)
- (loop
- for i from 0 below args-count
- for arg-name in args-names
- for arg-value in args-values
- for arg-type in args-types
- for arg-g-type = (if arg-type (ensure-g-type arg-type) (g-object-type-property-type object-type arg-name))
- for parameter = (mem-aref parameters 'g-parameter i)
- do (setf (foreign-slot-value parameter 'g-parameter :name) arg-name)
- do (set-g-value (foreign-slot-value parameter 'g-parameter :value)
- arg-value arg-g-type
- :zero-g-value t))
- (unwind-protect
- (g-object-newv object-type args-count parameters)
- (loop
- for i from 0 below args-count
- for parameter = (mem-aref parameters 'g-parameter i)
- do (foreign-free (mem-ref (foreign-slot-pointer parameter 'g-parameter :name) :pointer))
- do (g-value-unset (foreign-slot-pointer parameter 'g-parameter :value)))))))
-
-(defun g-object-call-get-property (object property-name &optional property-type)
- (restart-case
- (unless property-type
- (setf property-type
- (g-object-property-type object property-name :assert-readable t)))
- (return-nil () (return-from g-object-call-get-property nil)))
- (setf property-type (ensure-g-type property-type))
- (with-foreign-object (value 'g-value)
- (g-value-zero value)
- (g-value-init value property-type)
- (g-object-get-property (ensure-object-pointer object)
- property-name value)
- (unwind-protect
- (parse-gvalue value)
- (g-value-unset value))))
-
-(defun g-object-call-set-property (object property-name new-value
- &optional property-type)
- (unless property-type
- (setf property-type
- (g-object-property-type object property-name :assert-writable t)))
- (setf property-type (ensure-g-type property-type))
- (with-foreign-object (value 'g-value)
- (set-g-value value new-value property-type :zero-g-value t)
- (unwind-protect
- (g-object-set-property (ensure-object-pointer object)
- property-name value)
- (g-value-unset value))))
-