--- a/python/apps/diagrameditor.py	Sun Nov 18 13:41:51 2012 +0100
+++ b/python/apps/diagrameditor.py	Sun Nov 18 14:25:01 2012 +0100
@@ -34,6 +34,9 @@
    while newname in names: newname, i = name + str(i), i + 1
    return newname
 
+def indent(lines):
+   return ['   ' + line for line in lines]
+
 class Connection(QGraphicsPathItem):
    """ Implementation of a connection between blocks """
    def __init__(self, fromPort=None, toPort=None):
@@ -278,6 +281,14 @@
       for outp in d['outputs']: self.addOutput(OutputPort(outp['name'], self))
       self.subModel.Dict = d['submodel']
    Dict = property(getDict, setDict)
+   def gencode(self):
+      c = ['def {0}():'.format(self.name)]
+      if self.code:
+         c += indent(self.code.split('\n'))
+      else:
+         c += indent(['pass'])
+      print(c)
+      return c
    def addInput(self, i):
       self.inputs.append(i)
       self.updateSize()
@@ -354,6 +365,28 @@
       if hasattr(self.diagram, 'containingBlock'):
          self.diagram = self.diagram.containingBlock.scene()
          self.zoomAll()
+   def showCode(self):
+      if self.model:
+         c = self.model.gencode()
+         c = '\n'.join(c)
+         d = QDialog()
+         l = QFormLayout(d)
+         codeview = QTextEdit()
+         codeview.setPlainText(c)
+         l.addRow('code', codeview)
+         runButton = QPushButton('Run')
+         outputview = QTextEdit()
+         l.addRow('Output', outputview)
+         l.addWidget(runButton)
+         def print2(txt):
+            txt2 = outputview.toPlainText()
+            outputview.setPlainText(txt2 + '\n' + txt)
+         def runIt():
+            outputview.clear()
+            globs = {'print': print2}
+            exec(codeview.toPlainText(), globs)
+         runButton.clicked.connect(runIt)
+         d.exec_()
    def zoomAll(self):
       """ zoom to fit all items """
       rect = self.diagram.itemsBoundingRect()
@@ -396,6 +429,13 @@
       self.rootDiagram.Dict = d
       self.modelReset.emit()
    Dict = property(lambda s: s.rootDiagram.Dict, setDict)
+   def gencode(self):
+      c = ['def topLevel():']
+      c += indent(self.rootDiagram.gencode())
+      c.append('print("Running model")')
+      c.append('topLevel()')
+      c.append('print("Done")')
+      return c
    def index(self, row, column, parent=None):
       if parent.isValid():
          parent = parent.internalPointer().subModel
@@ -451,6 +491,13 @@
    def getDict(self):
       return {'blocks': [b.Dict for b in self.blocks], 'connections': [c.Dict for c in self.connections]}
    Dict = property(getDict, setDict)
+   def gencode(self):
+      c = []
+      for b in self.blocks:
+         c += b.gencode()
+      for b in self.blocks:
+         c.append('{0}()'.format(b.name))
+      return c
    def findPort(self, blockname, portname):
       block = self.findBlock(blockname)
       if block:
@@ -548,6 +595,7 @@
       act('Full screen', QKeySequence("F11"), self.toggleFullScreen)
       act('Fit in view', QKeySequence("F8"), self.editor.zoomAll)
       act('Go up', QKeySequence(Qt.Key_Up), self.editor.goUp)
+      act('Model code', QKeySequence("F7"), self.editor.showCode)
       def addDock(name, widget):
          dock = QDockWidget(name, self)
          dock.setObjectName(name)