has been updated

netCDF_visualizer.py

 '''
 /****************************************************************************************
-* This is a python script for visualizing netCDF files using PyQt5 and matplotlib
 * 
-* The script is based on the QGIS plugin template by Gispo
+* 
+* 
 * 
 * 
 ****************************************************************************************/
@@ -37,19 +37,112 @@ class netCDFVisualizer:
     """This is a class for the netCDFVisualizer Plugin"""
     #we set that we need the iface to build something with the class
     def __init__(self, iface):
+        """Constructor.
+        :param iface: An interface instance that will be passed to this class
+            which provides the hook by which you can manipulate the QGIS
+            application at run time.
+        :type iface: QgsInterface
+        """
         #our class builds netCDF_visualization Plugins
         #self is a Plugin
         #we set the iface as an attribute!!
         self.iface = iface
+        #decalre instance attributes
+        self.actions = []
+        self.menu = self.tr(u'&netCDFVisualizer')
+        
+    
+    def tr(self, message):
+        """Get the translation for a string using Qt translation API.
+        We implement this ourselves since we do not inherit QObject.
+        :param message: String for translation.
+        :type message: str, QString
+        :returns: Translated version of message.
+        :rtype: QString
+        """
+        return QCoreApplication.translate('netCDFVisualizer', message)
+        
+    def add_action(
+        self,
+        icon_path,
+        text,
+        callback,
+        enabled_flag=True,
+        add_to_menu=True,
+        add_to_toolbar=True,
+        status_tip=None,
+        whats_this=None,
+        parent=None):
+        """Add a toolbar icon to the toolbar.
+
+        :param icon_path: Path to the icon for this action. Can be a resource
+            path (e.g. ':/plugins/foo/bar.png') or a normal file system path.
+        :type icon_path: str
+
+        :param text: Text that should be shown in menu items for this action.
+        :type text: str
+
+        :param callback: Function to be called when the action is triggered.
+        :type callback: function
+
+        :param enabled_flag: A flag indicating if the action should be enabled
+            by default. Defaults to True.
+        :type enabled_flag: bool
+
+        :param add_to_menu: Flag indicating whether the action should also
+            be added to the menu. Defaults to True.
+        :type add_to_menu: bool
+
+        :param add_to_toolbar: Flag indicating whether the action should also
+            be added to the toolbar. Defaults to True.
+        :type add_to_toolbar: bool
+
+        :param status_tip: Optional text to show in a popup when mouse pointer
+            hovers over the action.
+        :type status_tip: str
+
+        :param parent: Parent widget for the new action. Defaults None.
+        :type parent: QWidget
+
+        :param whats_this: Optional text to show in the status bar when the
+            mouse pointer hovers over the action.
+
+        :returns: The action that was created. Note that the action is also
+            added to self.actions list.
+        :rtype: QAction
+        """
+        icon = QIcon(icon_path)
+        action = QAction(icon, text, parent)
+        action.triggered.connect(callback)
+        action.setEnabled(enabled_flag)
+
+        if status_tip is not None:
+            action.setStatusTip(status_tip)
         
+        if whats_this is not None:
+            action.setWhatsThis(whats_this)
+        
+        if add_to_toolbar:
+            self.iface.addToolBarIcon(action)
+        
+        if add_to_menu:
+            self.iface.addPluginToMenu(
+                self.menu,
+                action)
+        self.actions.append(action)
+        return action
+
     #when we click the plugin in QGIS the plugin will be loaded
     def initGui(self):
-        #we build the menu item without placing it already in the menu
-        self.pluginButton = QAction('start', self.iface.mainWindow())
-        #we connect the menu item
-        self.iface.addPluginToMenu('netCDFVisualizer', self.pluginButton)
-        #whenever self.pluginButton is clicked, the maskCall should be executed
-        self.pluginButton.triggered.connect(self.callMask)
+        """Create the menu entries and toolbar icons inside the QGIS GUI."""
+        icon_path = ':/plugins/netCDFVisualizer/icon.png'
+        self.add_action(
+            icon_path,
+            text=self.tr(u'netCDFVisualizer'),
+            callback=self.callMask,
+            parent=self.iface.mainWindow())
+
+        
 
 
     #when we close the plugin in QGIS the plugin will be unloaded