Exemplo n.º 1
0
class ValueForm(QtWidgets.QDialog):
    """
    This class implements the form used to select the Value of an Individual node.
    """
    def __init__(self, node, session):
        """
        Initialize the form dialog.
        :type node: IndividualNode
        :type session: Session
        """
        super().__init__(session)

        self.node = node

        #############################################
        # FORM AREA
        #################################

        self.datatypeLabel = QtWidgets.QLabel(self)
        self.datatypeLabel.setText('Datatype')
        self.datatypeField = ComboBox(self)
        self.datatypeField.setFixedWidth(300)
        for datatype in sorted(Datatype.forProfile(
                self.project.profile.type()),
                               key=attrgetter('value')):
            self.datatypeField.addItem(datatype.value, datatype)

        self.valueLabel = QtWidgets.QLabel(self)
        self.valueLabel.setText('Value')
        self.valueField = StringField(self)
        self.valueField.setFixedWidth(300)

        if node.identity() is Identity.Value:
            self.valueField.setValue(node.value)
            datatype = node.datatype
            for i in range(self.datatypeField.count()):
                if self.datatypeField.itemData(i) is datatype:
                    self.datatypeField.setCurrentIndex(i)
                    break
        else:
            self.valueField.setValue('')
            self.datatypeField.setCurrentIndex(0)

        self.formWidget = QtWidgets.QWidget(self)
        self.formLayout = QtWidgets.QFormLayout(self.formWidget)
        self.formLayout.addRow(self.datatypeLabel, self.datatypeField)
        self.formLayout.addRow(self.valueLabel, self.valueField)

        #############################################
        # CONFIRMATION AREA
        #################################

        self.confirmationBox = QtWidgets.QDialogButtonBox(
            QtCore.Qt.Horizontal, self)
        self.confirmationBox.addButton(QtWidgets.QDialogButtonBox.Ok)
        self.confirmationBox.addButton(QtWidgets.QDialogButtonBox.Cancel)
        self.confirmationBox.setContentsMargins(10, 0, 10, 10)

        #############################################
        # SETUP DIALOG LAYOUT
        #################################

        self.mainLayout = QtWidgets.QVBoxLayout(self)
        self.mainLayout.setContentsMargins(0, 0, 0, 0)
        self.mainLayout.addWidget(self.formWidget)
        self.mainLayout.addWidget(self.confirmationBox, 0,
                                  QtCore.Qt.AlignRight)

        self.setFixedSize(self.sizeHint())
        self.setWindowIcon(QtGui.QIcon(':/icons/128/ic_eddy'))
        self.setWindowTitle('Compose value')

        connect(self.confirmationBox.accepted, self.accept)
        connect(self.confirmationBox.rejected, self.reject)

    #############################################
    #   PROPERTIES
    #################################

    @property
    def project(self):
        """
        Returns the reference to the active project.
        :rtype: Project
        """
        return self.session.project

    @property
    def session(self):
        """
        Returns the reference to the active session (alias for RefactorNameForm.parent()).
        :rtype: Session
        """
        return self.parent()

    #############################################
    #   SLOTS
    #################################

    @QtCore.pyqtSlot()
    def accept(self):
        """
        Accepts the form and set the new value.
        """
        # print('>>>          ValueForm (accept)')
        node = self.node
        diagram = node.diagram
        datatype = self.datatypeField.currentData()
        value = self.valueField.value()
        data = node.compose(value, datatype)

        if node.text() != data:
            name = 'change {0} to {1}'.format(node.text(), data)

            new_prefix = datatype.value[0:datatype.value.index(':')]
            new_remaining_characters = datatype.value[datatype.value.index(':'
                                                                           ) +
                                                      1:len(datatype.value)]
            new_iri = None

            for namespace in Namespace:
                if namespace.name.lower() == new_prefix:
                    new_iri = namespace.value

            if new_iri is None:
                LOGGER.error(
                    '*****************   failed to assign iri to node   *******************'
                )
                return

            Duplicate_dict_1 = self.project.copy_IRI_prefixes_nodes_dictionaries(
                self.project.IRI_prefixes_nodes_dict, dict())
            Duplicate_dict_2 = self.project.copy_IRI_prefixes_nodes_dictionaries(
                self.project.IRI_prefixes_nodes_dict, dict())

            old_iri = self.project.get_iri_of_node(node)

            Duplicate_dict_1[old_iri][1].remove(node)
            Duplicate_dict_1[new_iri][1].add(node)

            commands = []

            commands.append(
                CommandProjectDisconnectSpecificSignals(self.project))
            commands.append(
                CommandLabelChange(diagram, self.node, self.node.text(), data))
            commands.append(
                CommandNodeSetRemainingCharacters(node.remaining_characters,
                                                  new_remaining_characters,
                                                  node, self.project))
            commands.append(
                CommandLabelChange(diagram, self.node, self.node.text(), data))
            commands.append(CommandProjectConnectSpecificSignals(self.project))

            if any(commands):
                self.session.undostack.beginMacro(
                    'edit Forms >> accept() {0}'.format(node))
                for command in commands:
                    if command:
                        self.session.undostack.push(command)
                self.session.undostack.endMacro()

        super().accept()
Exemplo n.º 2
0
class FacetNodeProperty(NodeProperty):
    """
    This class implements the property dialog for facet nodes.
    """
    def __init__(self, diagram, node, session):
        """
        Initialize the node properties dialog.
        :type diagram: Diagram
        :type node: AbstractNode
        :type session: Session
        """
        super().__init__(diagram, node, session)

        #############################################
        # FACET TAB
        #################################

        f1 = lambda x: x.type() is Item.InputEdge
        f2 = lambda x: x.type() is Item.DatatypeRestrictionNode
        f3 = lambda x: x.type() is Item.ValueDomainNode
        admissible = [x for x in Facet]
        restriction = first(
            self.node.outgoingNodes(filter_on_edges=f1, filter_on_nodes=f2))
        if restriction:
            valuedomain = first(
                restriction.incomingNodes(filter_on_edges=f1,
                                          filter_on_nodes=f3))
            if valuedomain:
                admissible = Facet.forDatatype(valuedomain.datatype)

        self.facetLabel = QtWidgets.QLabel(self)
        self.facetLabel.setText('Facet')
        self.facetField = ComboBox(self)
        self.facetField.setFixedWidth(200)
        self.facetField.setFocusPolicy(QtCore.Qt.StrongFocus)
        for facet in admissible:
            self.facetField.addItem(facet.value, facet)
        facet = self.node.facet
        for i in range(self.facetField.count()):
            if self.facetField.itemData(i) is facet:
                self.facetField.setCurrentIndex(i)
                break
        else:
            self.facetField.setCurrentIndex(0)

        self.valueLabel = QtWidgets.QLabel(self)
        self.valueLabel.setText('Value')
        self.valueField = StringField(self)
        self.valueField.setFixedWidth(200)
        self.valueField.setValue(self.node.value)

        self.facetWidget = QtWidgets.QWidget()
        self.facetLayout = QtWidgets.QFormLayout(self.facetWidget)
        self.facetLayout.addRow(self.facetLabel, self.facetField)
        self.facetLayout.addRow(self.valueLabel, self.valueField)

        self.mainWidget.addTab(self.facetWidget, 'Facet')

    #############################################
    #   SLOTS
    #################################

    @QtCore.pyqtSlot()
    def complete(self):
        """
        Executed when the dialog is accepted.
        """
        commands = [self.positionChanged(), self.facetChanged()]
        if any(commands):
            self.session.undostack.beginMacro('edit {0} properties'.format(
                self.node.name))
            for command in commands:
                if command:
                    self.session.undostack.push(command)
            self.session.undostack.endMacro()
        super().accept()

    #############################################
    #   AUXILIARY METHODS
    #################################

    def facetChanged(self):
        """
        Change the facet value of the node of the node.
        :rtype: QUndoCommand
        """
        data = self.node.compose(self.facetField.currentData(),
                                 self.valueField.value())
        if self.node.text() != data:
            return CommandLabelChange(self.diagram, self.node,
                                      self.node.text(), data)
        return None
Exemplo n.º 3
0
class ValueDomainNodeProperty(NodeProperty):
    """
    This class implements the property dialog for value-domain nodes.
    """
    def __init__(self, diagram, node, session):
        """
        Initialize the node properties dialog.
        :type diagram: Diagram
        :type node: AbstractNode
        :type session: Session
        """
        super().__init__(diagram, node, session)

        #############################################
        # DATATYPE TAB
        #################################

        self.datatypeLabel = QtWidgets.QLabel(self)
        self.datatypeLabel.setText('Datatype')
        self.datatypeField = ComboBox(self)
        self.datatypeField.setFixedWidth(200)
        self.datatypeField.setFocusPolicy(QtCore.Qt.StrongFocus)

        for datatype in Datatype:
            self.datatypeField.addItem(datatype.value, datatype)
        datatype = self.node.datatype
        for i in range(self.datatypeField.count()):
            if self.datatypeField.itemData(i) is datatype:
                self.datatypeField.setCurrentIndex(i)
                break
        else:
            self.datatypeField.setCurrentIndex(0)

        self.datatypeWidget = QtWidgets.QWidget()
        self.datatypeLayout = QtWidgets.QFormLayout(self.datatypeWidget)
        self.datatypeLayout.addRow(self.datatypeLabel, self.datatypeField)

        self.mainWidget.addTab(self.datatypeWidget, 'Datatype')

    #############################################
    #   SLOTS
    #################################

    @QtCore.pyqtSlot()
    def complete(self):
        """
        Executed when the dialog is accepted.
        """
        commands = [self.positionChanged(), self.datatypeChanged()]
        if any(commands):
            self.session.undostack.beginMacro('edit {0} properties'.format(
                self.node.name))
            for command in commands:
                if command:
                    self.session.undostack.push(command)
            self.session.undostack.endMacro()
        super().accept()

    #############################################
    #   AUXILIARY METHODS
    #################################

    def datatypeChanged(self):
        """
        Change the datatype of the node.
        :rtype: QUndoCommand
        """
        datatype = self.datatypeField.currentData()
        data = datatype.value
        if self.node.text() != data:
            return CommandLabelChange(self.diagram, self.node,
                                      self.node.text(), data)
        return None
Exemplo n.º 4
0
class ValueNodeProperty(NodeProperty):
    """
    This class implements the property dialog for value nodes.
    """
    def __init__(self, diagram, node, session):
        """
        Initialize the node properties dialog.
        :type diagram: Diagram
        :type node: AbstractNode
        :type session: Session
        """
        super().__init__(diagram, node, session)

        self.node = node

        #############################################
        # VALUE TAB
        #################################

        self.datatypeLabel = QtWidgets.QLabel(self)
        self.datatypeLabel.setText('Datatype')
        self.datatypeField = ComboBox(self)
        self.datatypeField.setFixedWidth(200)
        self.datatypeField.setFocusPolicy(QtCore.Qt.StrongFocus)

        for datatype in Datatype:
            self.datatypeField.addItem(datatype.value, datatype)
        datatype = self.node.datatype
        for i in range(self.datatypeField.count()):
            if self.datatypeField.itemData(i) is datatype:
                self.datatypeField.setCurrentIndex(i)
                break
        else:
            self.datatypeField.setCurrentIndex(0)

        self.valueLabel = QtWidgets.QLabel(self)
        self.valueLabel.setText('Value')
        self.valueField = StringField(self)
        self.valueField.setFixedWidth(200)
        self.valueField.setValue(self.node.value)

        self.valueWidget = QtWidgets.QWidget()
        self.valueLayout = QtWidgets.QFormLayout(self.valueWidget)
        self.valueLayout.addRow(self.datatypeLabel, self.datatypeField)
        self.valueLayout.addRow(self.valueLabel, self.valueField)

        self.mainWidget.addTab(self.valueWidget, 'Datatype')

    #############################################
    #   SLOTS
    #################################

    @QtCore.pyqtSlot()
    def complete(self):
        """
        Executed when the dialog is accepted.
        """
        commands = [self.positionChanged()]
        commands_value_changed = self.valueChanged()

        if commands_value_changed is not None:
            commands.extend(commands_value_changed)

        if any(commands):
            self.session.undostack.beginMacro('edit {0} properties'.format(
                self.node.name))
            for command in commands:
                if command:
                    self.session.undostack.push(command)
            self.session.undostack.endMacro()
        super().accept()

    #############################################
    #   AUXILIARY METHODS
    #################################

    def valueChanged(self):
        """
        Change the value of the node.
        :rtype: QUndoCommand
        """
        datatype = self.datatypeField.currentData()
        value = self.valueField.value()
        data = self.node.compose(value, datatype)
        if self.node.text() != data:
            new_prefix = datatype.value[0:datatype.value.index(':')]
            new_remaining_characters = datatype.value[datatype.value.index(':'
                                                                           ) +
                                                      1:len(datatype.value)]
            new_iri = None

            for namespace in Namespace:
                if namespace.name.lower() == new_prefix:
                    new_iri = namespace.value

            Duplicate_dict_1 = self.project.copy_IRI_prefixes_nodes_dictionaries(
                self.project.IRI_prefixes_nodes_dict, dict())
            Duplicate_dict_2 = self.project.copy_IRI_prefixes_nodes_dictionaries(
                self.project.IRI_prefixes_nodes_dict, dict())

            old_iri = self.project.get_iri_of_node(self.node)

            Duplicate_dict_1[old_iri][1].remove(self.node)
            Duplicate_dict_1[new_iri][1].add(self.node)

            commands = [
                CommandLabelChange(self.diagram, self.node, self.node.text(),
                                   data),
                CommandNodeSetRemainingCharacters(
                    self.node.remaining_characters, new_remaining_characters,
                    self.node, self.project),
                CommandLabelChange(self.diagram, self.node, self.node.text(),
                                   data)
            ]

            return commands

        return None
Exemplo n.º 5
0
class ValueForm(QtWidgets.QDialog):
    """
    This class implements the form used to select the Value of an Individual node.
    """
    def __init__(self, node, session):
        """
        Initialize the form dialog.
        :type node: IndividualNode
        :type session: Session
        """
        super().__init__(session)

        self.node = node

        #############################################
        # FORM AREA
        #################################

        self.datatypeLabel = QtWidgets.QLabel(self)
        self.datatypeLabel.setFont(Font('Roboto', 12))
        self.datatypeLabel.setText('Datatype')
        self.datatypeField = ComboBox(self)
        self.datatypeField.setFont(Font('Roboto', 12))
        self.datatypeField.setFixedWidth(300)
        for datatype in sorted(Datatype.forProfile(self.project.profile.type()), key=attrgetter('value')):
            self.datatypeField.addItem(datatype.value, datatype)

        self.valueLabel = QtWidgets.QLabel(self)
        self.valueLabel.setFont(Font('Roboto', 12))
        self.valueLabel.setText('Value')
        self.valueField = StringField(self)
        self.valueField.setFixedWidth(300)

        if node.identity() is Identity.Value:
            self.valueField.setValue(node.value)
            datatype = node.datatype
            for i in range(self.datatypeField.count()):
                if self.datatypeField.itemData(i) is datatype:
                    self.datatypeField.setCurrentIndex(i)
                    break
        else:
            self.valueField.setValue('')
            self.datatypeField.setCurrentIndex(0)

        self.formWidget = QtWidgets.QWidget(self)
        self.formLayout = QtWidgets.QFormLayout(self.formWidget)
        self.formLayout.addRow(self.datatypeLabel, self.datatypeField)
        self.formLayout.addRow(self.valueLabel, self.valueField)

        #############################################
        # CONFIRMATION AREA
        #################################

        self.confirmationBox = QtWidgets.QDialogButtonBox(QtCore.Qt.Horizontal, self)
        self.confirmationBox.addButton(QtWidgets.QDialogButtonBox.Ok)
        self.confirmationBox.addButton(QtWidgets.QDialogButtonBox.Cancel)
        self.confirmationBox.setContentsMargins(10, 0, 10, 10)
        self.confirmationBox.setFont(Font('Roboto', 12))

        #############################################
        # SETUP DIALOG LAYOUT
        #################################

        self.mainLayout = QtWidgets.QVBoxLayout(self)
        self.mainLayout.setContentsMargins(0, 0, 0, 0)
        self.mainLayout.addWidget(self.formWidget)
        self.mainLayout.addWidget(self.confirmationBox, 0, QtCore.Qt.AlignRight)

        self.setFixedSize(self.sizeHint())
        self.setWindowIcon(QtGui.QIcon(':/icons/128/ic_eddy'))
        self.setWindowTitle('Compose value')

        connect(self.confirmationBox.accepted, self.accept)
        connect(self.confirmationBox.rejected, self.reject)

    #############################################
    #   PROPERTIES
    #################################

    @property
    def project(self):
        """
        Returns the reference to the active project.
        :rtype: Project
        """
        return self.session.project

    @property
    def session(self):
        """
        Returns the reference to the active session (alias for RefactorNameForm.parent()).
        :rtype: Session
        """
        return self.parent()

    #############################################
    #   SLOTS
    #################################

    @QtCore.pyqtSlot()
    def accept(self):
        """
        Accepts the form and set the new value.
        """
        node = self.node
        diagram = node.diagram
        datatype = self.datatypeField.currentData()
        value = self.valueField.value()
        data = node.compose(value, datatype)
        if node.text() != data:
            name = 'change {0} to {1}'.format(node.text(), data)
            self.session.undostack.push(CommandLabelChange(diagram, node, node.text(), data, name=name))
        super().accept()
Exemplo n.º 6
0
class ValueNodeProperty(NodeProperty):
    """
    This class implements the property dialog for value nodes.
    """
    def __init__(self, diagram, node, session):
        """
        Initialize the node properties dialog.
        :type diagram: Diagram
        :type node: AbstractNode
        :type session: Session
        """
        super().__init__(diagram, node, session)

        #############################################
        # VALUE TAB
        #################################

        self.datatypeLabel = QtWidgets.QLabel(self)
        self.datatypeLabel.setFont(Font('Roboto', 12))
        self.datatypeLabel.setText('Datatype')
        self.datatypeField = ComboBox(self)
        self.datatypeField.setFixedWidth(200)
        self.datatypeField.setFocusPolicy(QtCore.Qt.StrongFocus)
        self.datatypeField.setFont(Font('Roboto', 12))

        for datatype in Datatype:
            self.datatypeField.addItem(datatype.value, datatype)
        datatype = self.node.datatype
        for i in range(self.datatypeField.count()):
            if self.datatypeField.itemData(i) is datatype:
                self.datatypeField.setCurrentIndex(i)
                break
        else:
            self.datatypeField.setCurrentIndex(0)

        self.valueLabel = QtWidgets.QLabel(self)
        self.valueLabel.setFont(Font('Roboto', 12))
        self.valueLabel.setText('Value')
        self.valueField = StringField(self)
        self.valueField.setFixedWidth(200)
        self.valueField.setFont(Font('Roboto', 12))
        self.valueField.setValue(self.node.value)

        self.valueWidget = QtWidgets.QWidget()
        self.valueLayout = QtWidgets.QFormLayout(self.valueWidget)
        self.valueLayout.addRow(self.datatypeLabel, self.datatypeField)
        self.valueLayout.addRow(self.valueLabel, self.valueField)

        self.mainWidget.addTab(self.valueWidget, 'Datatype')

    #############################################
    #   SLOTS
    #################################

    @QtCore.pyqtSlot()
    def complete(self):
        """
        Executed when the dialog is accepted.
        """
        commands = [self.positionChanged(), self.valueChanged()]
        if any(commands):
            self.session.undostack.beginMacro('edit {0} properties'.format(self.node.name))
            for command in commands:
                if command:
                    self.session.undostack.push(command)
            self.session.undostack.endMacro()
        super().accept()

    #############################################
    #   AUXILIARY METHODS
    #################################

    def valueChanged(self):
        """
        Change the value of the node.
        :rtype: QUndoCommand
        """
        datatype = self.datatypeField.currentData()
        value = self.valueField.value()
        data = self.node.compose(value, datatype)
        if self.node.text() != data:
            return CommandLabelChange(self.diagram, self.node, self.node.text(), data)
        return None
Exemplo n.º 7
0
class FacetNodeProperty(NodeProperty):
    """
    This class implements the property dialog for facet nodes.
    """
    def __init__(self, diagram, node, session):
        """
        Initialize the node properties dialog.
        :type diagram: Diagram
        :type node: AbstractNode
        :type session: Session
        """
        super().__init__(diagram, node, session)

        #############################################
        # FACET TAB
        #################################

        f1 = lambda x: x.type() is Item.InputEdge
        f2 = lambda x: x.type() is Item.DatatypeRestrictionNode
        f3 = lambda x: x.type() is Item.ValueDomainNode
        admissible = [x for x in Facet]
        restriction = first(self.node.outgoingNodes(filter_on_edges=f1, filter_on_nodes=f2))
        if restriction:
            valuedomain = first(restriction.incomingNodes(filter_on_edges=f1, filter_on_nodes=f3))
            if valuedomain:
                admissible = Facet.forDatatype(valuedomain.datatype)

        self.facetLabel = QtWidgets.QLabel(self)
        self.facetLabel.setFont(Font('Roboto', 12))
        self.facetLabel.setText('Facet')
        self.facetField = ComboBox(self)
        self.facetField.setFixedWidth(200)
        self.facetField.setFocusPolicy(QtCore.Qt.StrongFocus)
        self.facetField.setFont(Font('Roboto', 12))
        for facet in admissible:
            self.facetField.addItem(facet.value, facet)
        facet = self.node.facet
        for i in range(self.facetField.count()):
            if self.facetField.itemData(i) is facet:
                self.facetField.setCurrentIndex(i)
                break
        else:
            self.facetField.setCurrentIndex(0)

        self.valueLabel = QtWidgets.QLabel(self)
        self.valueLabel.setFont(Font('Roboto', 12))
        self.valueLabel.setText('Value')
        self.valueField = StringField(self)
        self.valueField.setFixedWidth(200)
        self.valueField.setFont(Font('Roboto', 12))
        self.valueField.setValue(self.node.value)

        self.facetWidget = QtWidgets.QWidget()
        self.facetLayout = QtWidgets.QFormLayout(self.facetWidget)
        self.facetLayout.addRow(self.facetLabel, self.facetField)
        self.facetLayout.addRow(self.valueLabel, self.valueField)

        self.mainWidget.addTab(self.facetWidget, 'Facet')

    #############################################
    #   SLOTS
    #################################

    @QtCore.pyqtSlot()
    def complete(self):
        """
        Executed when the dialog is accepted.
        """
        commands = [self.positionChanged(), self.facetChanged()]
        if any(commands):
            self.session.undostack.beginMacro('edit {0} properties'.format(self.node.name))
            for command in commands:
                if command:
                    self.session.undostack.push(command)
            self.session.undostack.endMacro()
        super().accept()

    #############################################
    #   AUXILIARY METHODS
    #################################

    def facetChanged(self):
        """
        Change the facet value of the node of the node.
        :rtype: QUndoCommand
        """
        data = self.node.compose(self.facetField.currentData(), self.valueField.value())
        if self.node.text() != data:
            return CommandLabelChange(self.diagram, self.node, self.node.text(), data)
        return None
Exemplo n.º 8
0
class ValueForm(QtWidgets.QDialog):
    """
    This class implements the form used to select the Value of an Individual node.
    """
    def __init__(self, node, session):
        """
        Initialize the form dialog.
        :type node: IndividualNode
        :type session: Session
        """
        super().__init__(session)

        self.node = node

        #############################################
        # FORM AREA
        #################################

        self.datatypeLabel = QtWidgets.QLabel(self)
        self.datatypeLabel.setFont(Font('Roboto', 12))
        self.datatypeLabel.setText('Datatype')
        self.datatypeField = ComboBox(self)
        self.datatypeField.setFont(Font('Roboto', 12))
        self.datatypeField.setFixedWidth(300)
        for datatype in sorted(Datatype.forProfile(
                self.project.profile.type()),
                               key=attrgetter('value')):
            self.datatypeField.addItem(datatype.value, datatype)

        self.valueLabel = QtWidgets.QLabel(self)
        self.valueLabel.setFont(Font('Roboto', 12))
        self.valueLabel.setText('Value')
        self.valueField = StringField(self)
        self.valueField.setFixedWidth(300)

        if node.identity() is Identity.Value:
            self.valueField.setValue(node.value)
            datatype = node.datatype
            for i in range(self.datatypeField.count()):
                if self.datatypeField.itemData(i) is datatype:
                    self.datatypeField.setCurrentIndex(i)
                    break
        else:
            self.valueField.setValue('')
            self.datatypeField.setCurrentIndex(0)

        self.formWidget = QtWidgets.QWidget(self)
        self.formLayout = QtWidgets.QFormLayout(self.formWidget)
        self.formLayout.addRow(self.datatypeLabel, self.datatypeField)
        self.formLayout.addRow(self.valueLabel, self.valueField)

        #############################################
        # CONFIRMATION AREA
        #################################

        self.confirmationBox = QtWidgets.QDialogButtonBox(
            QtCore.Qt.Horizontal, self)
        self.confirmationBox.addButton(QtWidgets.QDialogButtonBox.Ok)
        self.confirmationBox.addButton(QtWidgets.QDialogButtonBox.Cancel)
        self.confirmationBox.setContentsMargins(10, 0, 10, 10)
        self.confirmationBox.setFont(Font('Roboto', 12))

        #############################################
        # SETUP DIALOG LAYOUT
        #################################

        self.mainLayout = QtWidgets.QVBoxLayout(self)
        self.mainLayout.setContentsMargins(0, 0, 0, 0)
        self.mainLayout.addWidget(self.formWidget)
        self.mainLayout.addWidget(self.confirmationBox, 0,
                                  QtCore.Qt.AlignRight)

        self.setFixedSize(self.sizeHint())
        self.setWindowIcon(QtGui.QIcon(':/icons/128/ic_eddy'))
        self.setWindowTitle('Compose value')

        connect(self.confirmationBox.accepted, self.accept)
        connect(self.confirmationBox.rejected, self.reject)

    #############################################
    #   PROPERTIES
    #################################

    @property
    def project(self):
        """
        Returns the reference to the active project.
        :rtype: Project
        """
        return self.session.project

    @property
    def session(self):
        """
        Returns the reference to the active session (alias for RefactorNameForm.parent()).
        :rtype: Session
        """
        return self.parent()

    #############################################
    #   SLOTS
    #################################

    @QtCore.pyqtSlot()
    def accept(self):
        """
        Accepts the form and set the new value.
        """
        node = self.node
        diagram = node.diagram
        datatype = self.datatypeField.currentData()
        value = self.valueField.value()
        data = node.compose(value, datatype)
        if node.text() != data:
            name = 'change {0} to {1}'.format(node.text(), data)
            self.session.undostack.push(
                CommandLabelChange(diagram, node, node.text(), data,
                                   name=name))
        super().accept()