plugin_context.py

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# Copyright (c) 2011, Dirk Thomas, Dorian Scholz, TU Darmstadt
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from python_qt_binding.QtCore import QObject


class PluginContext(QObject):

    """
    PluginContext providing information to the plugin and exposing methods for the plugin to interact with the framework.
    It relays all methods to the corresponding `PluginHandler`.
    """

    def __init__(self, handler):
        super(PluginContext, self).__init__(handler)
        self.setObjectName('PluginContext')

        self._handler = handler

    def serial_number(self):
        """
        Return the serial number of the plugin.
        For a specific type of plugin each instance gets a serial number (which is the first currently not used positive integer at construction time).
        @return: The serial number
        @rtype: int
        """
        return self._handler.instance_id().serial_number

    def argv(self):
        """
        Return the command line arguments of the plugin.
        @return: The arguments without a program name at the beginning
        @rtype: list
        """
        return self._handler.argv()

    def add_widget(self, widget):
        """
        Add a widget to the UI.
        The widget is embedded into a new QDockWidget which itself is added to the QMainWindow.
        This method can be called once for each widget a plugin would like to add and at any point in time (until the calling plugin has been shutdown).
        Note: The ownership of the widget is transferred to the callee which will delete it when the plugin is shut down.
        @param widget: The widget to add
        @type widget: QWidget
        """
        self._handler.add_widget(widget)

    def remove_widget(self, widget):
        """
        Remove a previously added widget from the UI.
        Note: The ownership of the widget is transferred to the caller.
        @param widget: The widget to remove
        @type widget: QWidget
        """
        self._handler.remove_widget(widget)

    def add_toolbar(self, toolbar):
        """
        Add a toolbar to the UI.
        The toolbar is directly added to the QMainWindow.
        This method can be called once for each toolbar a plugin would like to add and at any point in time (until the calling plugin has been shutdown).
        Note: The ownership of the toolbar is transferred to the callee which will delete it when the plugin is shut down.
        @param widget: The toolbar to add
        @type widget: QToolBar
        """
        self._handler.add_toolbar(toolbar)

    def remove_toolbar(self, toolbar):
        """
        Remove a previously added toolbar from the UI.
        Note: The ownership of the toolbar is transferred to the caller.
        @param widget: The toolbar to remove
        @type widget: QToolBar
        """
        self._handler.remove_toolbar(toolbar)

    def close_plugin(self):
        """
        Close the plugin.
        The framework will call `Plugin.shutdown_plugin()` and unload it afterwards.
        """
        self._handler.close_plugin()

    def reload_plugin(self):
        """
        Reload the plugin.
        """
        self._handler.reload_plugin()