Import LinuxCNC source tree

configs/sim/axis/gladevcp/test_handler.py

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+import hal
+
+# Import core libraries
+from gladevcp.core import Info, Action
+
+# Instantiate libraries
+INFO = Info()
+ACTION = Action()
+
+def get_handlers(halcomp,builder,useropts):
+    return [HandlerClass(halcomp,builder,useropts)]
+
+class HandlerClass:
+    '''
+    class with gladevcp callback handlers
+    '''
+
+    # general button callback function with some sample code
+    def on_button_press(self, widget, data=None):
+        print(widget, data)
+        print('Max Feed Override INI setting:',INFO.MAX_FEED_OVERRIDE)
+        ACTION.SET_DISPLAY_MESSAGE('Handler defined button Pressed')
+
+    def __init__(self, halcomp,builder,useropts):
+        '''
+        Handler classes are instantiated in the following state:
+        - the widget tree is created, but not yet realized (no toplevel window.show() executed yet)
+        - the halcomp HAL component is set up and the widhget tree's HAL pins have already been added to it
+        - it is safe to add more hal pins because halcomp.ready() has not yet been called at this point.
+
+        after all handlers are instantiated in command line and get_handlers() order, callbacks will be
+        connected with connect_signals()/signal_autoconnect()
+
+        The builder may be either of libglade or GtkBuilder type depending on the glade file format.
+        '''
+
+        self.halcomp = halcomp
+        self.builder = builder
+