commit 9e70c7fae4af8351bfa133b57b204d387302fe4e
parent e54a746a5795ed498a8f8e2883f5a62eb7c106d2
Author: thomasv <thomasv@gitorious>
Date: Mon, 30 Sep 2013 10:41:09 +0200
re-adding console.py (deleted by mistake)
Diffstat:
| A | gui/qt/console.py | | | 315 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
1 file changed, 315 insertions(+), 0 deletions(-)
diff --git a/gui/qt/console.py b/gui/qt/console.py
@@ -0,0 +1,315 @@
+# source: http://stackoverflow.com/questions/2758159/how-to-embed-a-python-interpreter-in-a-pyqt-widget
+
+import sys, os, re
+import traceback, platform
+from PyQt4 import QtCore
+from PyQt4 import QtGui
+from electrum import util
+
+
+if platform.system() == 'Windows':
+ MONOSPACE_FONT = 'Lucida Console'
+elif platform.system() == 'Darwin':
+ MONOSPACE_FONT = 'Monaco'
+else:
+ MONOSPACE_FONT = 'monospace'
+
+
+class Console(QtGui.QPlainTextEdit):
+ def __init__(self, prompt='>> ', startup_message='', parent=None):
+ QtGui.QPlainTextEdit.__init__(self, parent)
+
+ self.prompt = prompt
+ self.history = []
+ self.namespace = {}
+ self.construct = []
+
+ self.setGeometry(50, 75, 600, 400)
+ self.setWordWrapMode(QtGui.QTextOption.WrapAnywhere)
+ self.setUndoRedoEnabled(False)
+ self.document().setDefaultFont(QtGui.QFont(MONOSPACE_FONT, 10, QtGui.QFont.Normal))
+ self.showMessage(startup_message)
+
+ self.updateNamespace({'run':self.run_script})
+ self.set_json(False)
+
+ def set_json(self, b):
+ self.is_json = b
+
+ def run_script(self, filename):
+ with open(filename) as f:
+ script = f.read()
+ result = eval(script, self.namespace, self.namespace)
+
+
+
+ def updateNamespace(self, namespace):
+ self.namespace.update(namespace)
+
+ def showMessage(self, message):
+ self.appendPlainText(message)
+ self.newPrompt()
+
+ def clear(self):
+ self.setPlainText('')
+ self.newPrompt()
+
+ def newPrompt(self):
+ if self.construct:
+ prompt = '.' * len(self.prompt)
+ else:
+ prompt = self.prompt
+
+ self.completions_pos = self.textCursor().position()
+ self.completions_visible = False
+
+ self.appendPlainText(prompt)
+ self.moveCursor(QtGui.QTextCursor.End)
+
+ def getCommand(self):
+ doc = self.document()
+ curr_line = unicode(doc.findBlockByLineNumber(doc.lineCount() - 1).text())
+ curr_line = curr_line.rstrip()
+ curr_line = curr_line[len(self.prompt):]
+ return curr_line
+
+ def setCommand(self, command):
+ if self.getCommand() == command:
+ return
+
+ doc = self.document()
+ curr_line = unicode(doc.findBlockByLineNumber(doc.lineCount() - 1).text())
+ self.moveCursor(QtGui.QTextCursor.End)
+ for i in range(len(curr_line) - len(self.prompt)):
+ self.moveCursor(QtGui.QTextCursor.Left, QtGui.QTextCursor.KeepAnchor)
+
+ self.textCursor().removeSelectedText()
+ self.textCursor().insertText(command)
+ self.moveCursor(QtGui.QTextCursor.End)
+
+
+ def show_completions(self, completions):
+ if self.completions_visible:
+ self.hide_completions()
+
+ c = self.textCursor()
+ c.setPosition(self.completions_pos)
+
+ completions = map(lambda x: x.split('.')[-1], completions)
+ t = '\n' + ' '.join(completions)
+ if len(t) > 500:
+ t = t[:500] + '...'
+ c.insertText(t)
+ self.completions_end = c.position()
+
+ self.moveCursor(QtGui.QTextCursor.End)
+ self.completions_visible = True
+
+
+ def hide_completions(self):
+ if not self.completions_visible:
+ return
+ c = self.textCursor()
+ c.setPosition(self.completions_pos)
+ l = self.completions_end - self.completions_pos
+ for x in range(l): c.deleteChar()
+
+ self.moveCursor(QtGui.QTextCursor.End)
+ self.completions_visible = False
+
+
+ def getConstruct(self, command):
+ if self.construct:
+ prev_command = self.construct[-1]
+ self.construct.append(command)
+ if not prev_command and not command:
+ ret_val = '\n'.join(self.construct)
+ self.construct = []
+ return ret_val
+ else:
+ return ''
+ else:
+ if command and command[-1] == (':'):
+ self.construct.append(command)
+ return ''
+ else:
+ return command
+
+ def getHistory(self):
+ return self.history
+
+ def setHisory(self, history):
+ self.history = history
+
+ def addToHistory(self, command):
+ if command.find("importprivkey") > -1:
+ return
+
+ if command and (not self.history or self.history[-1] != command):
+ self.history.append(command)
+ self.history_index = len(self.history)
+
+ def getPrevHistoryEntry(self):
+ if self.history:
+ self.history_index = max(0, self.history_index - 1)
+ return self.history[self.history_index]
+ return ''
+
+ def getNextHistoryEntry(self):
+ if self.history:
+ hist_len = len(self.history)
+ self.history_index = min(hist_len, self.history_index + 1)
+ if self.history_index < hist_len:
+ return self.history[self.history_index]
+ return ''
+
+ def getCursorPosition(self):
+ c = self.textCursor()
+ return c.position() - c.block().position() - len(self.prompt)
+
+ def setCursorPosition(self, position):
+ self.moveCursor(QtGui.QTextCursor.StartOfLine)
+ for i in range(len(self.prompt) + position):
+ self.moveCursor(QtGui.QTextCursor.Right)
+
+ def register_command(self, c, func):
+ methods = { c: func}
+ self.updateNamespace(methods)
+
+
+ def runCommand(self):
+ command = self.getCommand()
+ self.addToHistory(command)
+
+ command = self.getConstruct(command)
+
+ if command:
+ tmp_stdout = sys.stdout
+
+ class stdoutProxy():
+ def __init__(self, write_func):
+ self.write_func = write_func
+ self.skip = False
+
+ def flush(self):
+ pass
+
+ def write(self, text):
+ if not self.skip:
+ stripped_text = text.rstrip('\n')
+ self.write_func(stripped_text)
+ QtCore.QCoreApplication.processEvents()
+ self.skip = not self.skip
+
+ if type(self.namespace.get(command)) == type(lambda:None):
+ self.appendPlainText("'%s' is a function. Type '%s()' to use it in the Python console."%(command, command))
+ self.newPrompt()
+ return
+
+ sys.stdout = stdoutProxy(self.appendPlainText)
+ try:
+ try:
+ result = eval(command, self.namespace, self.namespace)
+ if result != None:
+ if self.is_json:
+ util.print_json(result)
+ else:
+ self.appendPlainText(repr(result))
+ except SyntaxError:
+ exec command in self.namespace
+ except SystemExit:
+ self.close()
+ except:
+ traceback_lines = traceback.format_exc().split('\n')
+ # Remove traceback mentioning this file, and a linebreak
+ for i in (3,2,1,-1):
+ traceback_lines.pop(i)
+ self.appendPlainText('\n'.join(traceback_lines))
+ sys.stdout = tmp_stdout
+ self.newPrompt()
+ self.set_json(False)
+
+
+ def keyPressEvent(self, event):
+ if event.key() == QtCore.Qt.Key_Tab:
+ self.completions()
+ return
+
+ self.hide_completions()
+
+ if event.key() in (QtCore.Qt.Key_Enter, QtCore.Qt.Key_Return):
+ self.runCommand()
+ return
+ if event.key() == QtCore.Qt.Key_Home:
+ self.setCursorPosition(0)
+ return
+ if event.key() == QtCore.Qt.Key_PageUp:
+ return
+ elif event.key() in (QtCore.Qt.Key_Left, QtCore.Qt.Key_Backspace):
+ if self.getCursorPosition() == 0:
+ return
+ elif event.key() == QtCore.Qt.Key_Up:
+ self.setCommand(self.getPrevHistoryEntry())
+ return
+ elif event.key() == QtCore.Qt.Key_Down:
+ self.setCommand(self.getNextHistoryEntry())
+ return
+ elif event.key() == QtCore.Qt.Key_L and event.modifiers() == QtCore.Qt.ControlModifier:
+ self.clear()
+
+ super(Console, self).keyPressEvent(event)
+
+
+
+ def completions(self):
+ cmd = self.getCommand()
+ lastword = re.split(' |\(|\)',cmd)[-1]
+ beginning = cmd[0:-len(lastword)]
+
+ path = lastword.split('.')
+ ns = self.namespace.keys()
+
+ if len(path) == 1:
+ ns = ns
+ prefix = ''
+ else:
+ obj = self.namespace.get(path[0])
+ prefix = path[0] + '.'
+ ns = dir(obj)
+
+
+ completions = []
+ for x in ns:
+ if x[0] == '_':continue
+ xx = prefix + x
+ if xx.startswith(lastword):
+ completions.append(xx)
+ completions.sort()
+
+ if not completions:
+ self.hide_completions()
+ elif len(completions) == 1:
+ self.hide_completions()
+ self.setCommand(beginning + completions[0])
+ else:
+ # find common prefix
+ p = os.path.commonprefix(completions)
+ if len(p)>len(lastword):
+ self.hide_completions()
+ self.setCommand(beginning + p)
+ else:
+ self.show_completions(completions)
+
+
+welcome_message = '''
+ ---------------------------------------------------------------
+ Welcome to a primitive Python interpreter.
+ ---------------------------------------------------------------
+'''
+
+if __name__ == '__main__':
+ app = QtGui.QApplication(sys.argv)
+ console = Console(startup_message=welcome_message)
+ console.updateNamespace({'myVar1' : app, 'myVar2' : 1234})
+ console.show();
+ sys.exit(app.exec_())
