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Normalize signal and slot names at compile time.
Annotate for file src/signal-slot/connect.lisp
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(in-package :qt)
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(defgeneric connect (qsignal slot &optional type)
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(:documentation "Connects a signal to a slot."))
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(defgeneric disconnect (qsignal slot)
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(:documentation "Disconnects a connection."))
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(defgeneric disconnect-all (qsignal)
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(:documentation "Disconnects all connections of QSIGNAL."))
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'
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(defun check-argument-types (signal-arguments slot-arguments)
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(assert (= (length signal-arguments) (length slot-arguments)))
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(loop for signal-arg in signal-arguments
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for slot-arg in slot-arguments do
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(assert (subtypep signal-arg slot-arg))))
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;;FIXME check argument-types
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(defmethod connect ((qsignal qsignal) (qslot qslot) &optional type)
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(assert (or (slot-boundp (signal-object qsignal) 'argument-types)
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(slot-boundp qslot 'arguments))
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((slot-value (signal-object qsignal) 'argument-types)
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(slot-value qslot 'arguments))
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"Argument types must be specified for at least on of
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~A and ~A." qsignal qslot)
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(when (not (slot-boundp (signal-object qsignal) 'argument-types))
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(setf (argument-types (signal-object qsignal))
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(arguments qslot)))
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(when (not (slot-boundp qslot 'arguments))
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(setf (slot-value qslot 'arguments)
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(argument-types (signal-object qsignal))))
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(check-argument-types (argument-types (signal-object qsignal))
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(arguments qslot))
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(unless (connect-id (signal-object qsignal) (id (signal-object qsignal))
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qslot (id qslot)
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type
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(types (arguments qslot)))
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(cerror "Failed to connect ~S to ~S." qsignal qslot)))
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(defmethod connect ((sender qsignal) (function function) &optional type)
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(let ((slot (make-instance 'qslot
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:args (list (signal-object sender))
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:slot-function function)))
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(unless (connect-id (signal-object sender) (id (signal-object sender))
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slot (id slot)
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type
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(types (arguments sender)))
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(cerror "Failed to connect the function ~S to the signal ~S."
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function sender))))
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'
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(defclass qt-signal-slot-name ()
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((name :initarg :name
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:reader name)))
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(defclass qt-signal (qt-signal-slot-name)
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((sender :initarg :sender
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:reader qsender))
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(:documentation "Qt C++ signal."))
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'
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(defclass qt-slot (qt-signal-slot-name)
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((receiver :initarg :receiver
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:reader receiver))
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(:documentation "Qt C++ slot."))
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(defun get-slot (receiver name)
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"Returns the slot of RECEIVER with NAME."
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(make-instance 'qt-slot :receiver receiver :name name))
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(define-compiler-macro get-slot (&whole form receiver name)
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"Normalize the slot name."
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(if (stringp name)
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(let ((normalized-name (cxx:data (meta-object.normalized-signature name))))
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(if (string= name normalized-name) ;; Avoid loop
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form
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`(get-slot ,receiver ,normalized-name)))
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form))
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(defun get-signal (sender name)
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"Returns the signal NAME of SENDER."
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(make-instance 'qt-signal :sender sender :name name))
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(define-compiler-macro get-signal (&whole form sender name)
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"Normalize the signal name."
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(if (stringp name)
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(let ((normalized-name (cxx:data (meta-object.normalized-signature name))))
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(if (string= name normalized-name) ;; Avoid loop
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form
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`(get-signal ,sender ,normalized-name)))
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form))
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(defmethod connect ((qt-signal qt-signal) (qt-slot qt-slot) &optional type)
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(unless (object.connect (qsender qt-signal) (qsignal (name qt-signal))
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(receiver qt-slot) (qslot (name qt-slot))
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(or type +auto-connection+))
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(cerror "Failed to connect ~A ~A to ~A ~A."
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(qsender qt-signal) (name qt-signal)
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(receiver qt-slot) (name qt-slot))))
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(defmethod disconnect ((qt-signal qt-signal) (qt-slot qt-slot))
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(unless (object.disconnect (qsender qt-signal) (qsignal (name qt-signal))
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(receiver qt-slot) (qslot (name qt-slot)))
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(cerror "Failed to disconnect ~A ~A from ~A ~A."
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(receiver qt-slot) (name qt-slot)
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(qsender qt-signal) (name qt-signal))))
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(defmethod disconnect-all ((sender object))
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(unless (object.disconnect sender 0 0 0)
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(cerror "Failed to disconnect everything connected to ~A."
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sender)))
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(defmethod connect ((qt-signal qt-signal) (function function) &optional type)
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(let* ((signal-id (find-signal-id (qsender qt-signal) (name qt-signal)))
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(slot (make-instance 'qslot
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;; Set the sender as the slots parent,
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;; to ensure it does not get gc'ed.
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;; FIXME: unset parent on disconnect
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;; this no not critical beause the slot object
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;; is hidden from the user, who thus can not
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;; connect it to other signals.
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:args (list (qsender qt-signal))
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:slot-function function
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:argument-types
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(method-arguments-type
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(cxx:meta-object (qsender qt-signal))
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signal-id))))
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(if (connect-id (qsender qt-signal) signal-id
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slot (id slot)
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type (types (arguments slot)))
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(cxx:connect-notify (qsender qt-signal)
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(name qt-signal))
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(cerror "Ignore" "Failed to connect the signal ~S of ~S to the function ~S."
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(name qt-signal) (qsender qt-signal) function))))
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(defmethod connect ((qt-signal qt-signal) (slot qslot) &optional type)
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(let ((signal-id (find-signal-id (qsender qt-signal) (name qt-signal))))
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(if (slot-boundp slot 'arguments)
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(check-argument-types (method-arguments-type (cxx:meta-object
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(qsender qt-signal))
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signal-id)
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(arguments slot))
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(setf (slot-value slot 'arguments)
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(method-arguments-type (cxx:meta-object (qsender qt-signal))
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signal-id)))
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(if (connect-id (qsender qt-signal) signal-id
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slot (id slot)
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type (types (arguments slot)))
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(cxx:connect-notify (qsender qt-signal)
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(name qt-signal))
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(cerror "Ignore" "Failed to connect the signal ~S of ~S to the slot ~S."
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(name qt-signal) (qsender qt-signal) slot))))
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(defmethod connect ((qsignal qsignal) (slot qt-slot) &optional type)
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(let ((slot-id (find-slot-id (receiver slot) (name slot))))
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(if (slot-boundp (signal-object qsignal) 'argument-types)
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(check-argument-types (argument-types (signal-object slot))
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(method-arguments-type (cxx:meta-object
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(receiver slot))
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slot-id))
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(setf (argument-types (signal-object qsignal))
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(method-arguments-type (cxx:meta-object (receiver slot))
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slot-id)))
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(unless (connect-id (signal-object qsignal) (id (signal-object qsignal))
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(receiver slot) slot-id
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type
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(types (argument-types (signal-object qsignal))))
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(cerror "Failed to connect ~S to ~S." qsignal slot))))
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'
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(defun connect-id (sender signal-id receiver slot-id type types)
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(meta-object.connect sender signal-id
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receiver slot-id
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(if (null type)
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(value +auto-connection+)
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(value type))
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types))
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'
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(defun disconnect-id (sender signal-id receiver slot-id)
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(meta-object.disconnect sender signal-id receiver slot-id))