class Interpreter(QWidget):
lastCommands = []
lastIndex = 0
def __init__(self, context):
QWidget.__init__(self)
self.context = context
self.setupUI()
self.setWindowTitle('Interpreter')
self.setMinimumSize(400, 250)
def setupUI(self):
layout = QVBoxLayout()
layout.setContentsMargins(0, 0, 0, 0)
self.out = QTextEdit()
self.out.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
self.out.setTextInteractionFlags(Qt.TextSelectableByMouse | Qt.TextSelectableByKeyboard)
self.highlighter = PythonSyntaxHighlighter( self.out, prefix = ">>>" )
self.input = QLineEdit()
self.input.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Minimum )
layout.addWidget(self.out, 1)
layout.addWidget(self.input, 0)
self.setLayout(layout)
QWidget.connect(self.input, SIGNAL('returnPressed()'), self.run)
def run(self):
scode = str(self.input.text()).strip()
self.out.append(">>> " + scode + "\n")
self.input.setText('')
name = threading.current_thread().name
try:
sys.stdout.flush(name)
if len(self.lastCommands) == 100:
del self.lastCommands[0]
self.lastCommands.append(scode)
self.lastIndex = 0
try:
out = eval(scode, self.context)
if out:
print out
except:
code = compile(scode, '', 'exec')
exec code in self.context
except:
traceback.print_exc()
finally:
self.write( sys.stdout.getOutput(name) )
def keyPressEvent(self, event):
# Prev in command history
if event.key() == Qt.Key_Up:
try:
self.lastIndex -= 1
self.input.setText(self.lastCommands[self.lastIndex])
except:
self.lastIndex += 1
# Next in command history
elif event.key() == Qt.Key_Down:
try:
self.lastIndex += 1
if self.lastIndex >= 0:
self.lastIndex = 0
self.input.setText('')
else:
self.input.setText(self.lastCommands[self.lastIndex])
except:
self.lastIndex -= 1
# Clear screen
elif event.key() == Qt.Key_L:
if event.modifiers() == Qt.ControlModifier:
lines = self.out.height() / self.out.fontMetrics().height()
#for i in xrange(lines):
# self.out.append('')
self.write('\n' * lines)
self.out.moveCursor( QTextCursor.End )
#def getOutStream(self):
# return self.TextOutput(self.out)
def write(self, data):
self.out.moveCursor( QTextCursor.End )
try:
self.out.insertPlainText( unicode(data) )
except:
self.out.insertPlainText( data )
self.out.moveCursor( QTextCursor.End )
