Add SDL handler using Opengeode API to display a statechart

Makefile

@@ -8,7 +8,7 @@ install: compile-all
 	@for f in ColorFormatter.py  TasteMainWindow.py  asn1_python.py \
 		  errCode.py  mscHandler.py  plotmanager.py  tasteplot.py \
 		  vn.py Scenario.py __init__.py   asn1_value_editor.py gui.py \
-		  mscStreamingScene.py  standalone_editor.py  \
+		  mscStreamingScene.py  standalone_editor.py  sdlHandler.py\
 		  udpcontroller.py resources.py; \
 	    do echo Installing $$f && cp $$f asn1_value_editor ; \
 	done

gui.py

@@ -56,6 +56,7 @@ except ImportError:
 import resources
 
 from mscHandler import mscHandler
+from sdlHandler import sdlHandler
 
 from PySide.QtCore import QThread, QFile, Qt, Signal, QObject
 from PySide.QtGui import(QApplication, QStatusBar, QLabel, QWidget,
@@ -277,6 +278,17 @@ def gui():
     mscButton.triggered.connect(msc.startStop)
     myWidget.mscTrigger.connect(msc.startStop)
 
+    # Create a dock to handle the display of SDL diagrams
+    try:
+        sdl = sdlHandler(myWidget)
+    except IOError:
+        log.info('SDL viewer not available')
+        pass
+    else:
+        sdlButton = toolbar.addAction('SDL')
+        sdlButton.triggered.connect(sdl.startStop)
+
+
     # find dockable widgets (containing TM and TC editors)
     docks = myWidget.findChildren(QDockWidget)
     firstTC = None

resources.py

@@ -2,7 +2,7 @@
 
 # Resource object code
 #
-# Created: Fri Nov 21 16:43:11 2014
+# Created: Fri Dec 12 21:30:00 2014
 #      by: The Resource Compiler for PySide (Qt v4.8.6)
 #
 # WARNING! All changes made in this file will be lost!

sdlHandler.py

+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# pylint: disable=C0302
+"""
+    TASTE GUI - SDL Statechart handler
+
+    Connect to OpenGEODE and display the statechart during the simulation
+
+    Copyright (c) 2012-2015 European Space Agency
+
+    Designed and implemented by Maxime Perrotin
+
+    Contact: maxime.perrotin@esa.int
+"""
+
+import os
+
+from PySide.QtGui import QDockWidget
+from PySide.QtCore import Slot, Qt
+
+try:
+    import opengeode
+except ImportError:
+    print 'OpenGEODE module is not available'
+
+
+class sdlHandler(object):
+    '''
+        Class managing SDL models
+    '''
+    def __init__(self, parent):
+        ''' Startup: check if there are some SDL files in
+            the directory and try to parse them and build the widget '''
+        all_files = os.listdir('.')
+        pr_files = []
+        for each in all_files:
+            if each.endswith('.pr'):
+                pr_files.append(each)
+        if not pr_files:
+            raise IOError('SDL Handler failed to initialize')
+        self.ast = opengeode.parse(pr_files)
+        try:
+            root_ast = self.ast[0]
+            proc = root_ast.processes[0]
+        except IndexError:
+            raise IOError('SDL Handler failed to initialize')
+        opengeode.Helper.flatten(proc)
+        graph = opengeode.Statechart.create_dot_graph(proc)
+        self.sdl_scene = opengeode.SDL_Scene('statechart')
+        self.sdl_view = opengeode.SDL_View(self.sdl_scene)
+        opengeode.Statechart.render_statechart(self.sdl_scene, graph)
+        self.sdl_view.refresh()
+        self.dock = QDockWidget('SDL/Statechart Viewer', parent)
+        self.dock.setFloating(True)
+        self.dock.setObjectName('SDLViewer')
+        parent.addDockWidget(Qt.RightDockWidgetArea, self.dock)
+        self.dock.setAllowedAreas(Qt.NoDockWidgetArea)
+        self.sdl_view.show()
+        self.dock.setWidget(self.sdl_view)
+        self.running = False
+        self.dock.hide()
+
+    @Slot()
+    def startStop(self):
+        ''' Trigger or stop the SDL display '''
+        self.running = not self.running
+        if self.running:
+            self.dock.show()
+        else:
+            self.dock.hide()