c368d904fc
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@8658 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
158 lines
4.8 KiB
Python
158 lines
4.8 KiB
Python
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from wxPython.wx import *
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#----------------------------------------------------------------------
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class TestPanel(wxPanel):
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def __init__(self, parent, ID, log):
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wxPanel.__init__(self, parent, ID)
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self.log = log
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self.process = None
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EVT_IDLE(self, self.OnIdle)
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# We can either derive from wxProcess and override OnTerminate
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# or we can let wxProcess send this window an event that is
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# caught in the normal way...
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EVT_END_PROCESS(self, -1, self.OnProcessEnded)
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# Make the controls
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prompt = wxStaticText(self, -1, 'Command line:')
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self.cmd = wxTextCtrl(self, -1, 'python data/echo.py')
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self.exBtn = wxButton(self, -1, 'Execute')
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self.out = wxTextCtrl(self, -1, '', style=wxTE_MULTILINE|wxTE_READONLY)
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self.inp = wxTextCtrl(self, -1, '', style=wxTE_PROCESS_ENTER)
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self.sndBtn = wxButton(self, -1, 'Send')
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self.termBtn = wxButton(self, -1, 'Close Stream')
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self.inp.Enable(false)
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self.sndBtn.Enable(false)
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self.termBtn.Enable(false)
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# Hook up the events
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EVT_BUTTON(self, self.exBtn.GetId(), self.OnExecuteBtn)
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EVT_BUTTON(self, self.sndBtn.GetId(), self.OnSendText)
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EVT_BUTTON(self, self.termBtn.GetId(), self.OnCloseStream)
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EVT_TEXT_ENTER(self, self.inp.GetId(), self.OnSendText)
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# Do the layout
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box1 = wxBoxSizer(wxHORIZONTAL)
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box1.Add(prompt, 0, wxALIGN_CENTER)
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box1.Add(self.cmd, 1, wxALIGN_CENTER|wxLEFT|wxRIGHT, 5)
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box1.Add(self.exBtn, 0)
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box2 = wxBoxSizer(wxHORIZONTAL)
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box2.Add(self.inp, 1, wxALIGN_CENTER)
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box2.Add(self.sndBtn, 0, wxLEFT, 5)
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box2.Add(self.termBtn, 0, wxLEFT, 5)
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sizer = wxBoxSizer(wxVERTICAL)
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sizer.Add(box1, 0, wxEXPAND|wxALL, 10)
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sizer.Add(self.out, 1, wxEXPAND|wxALL, 10)
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sizer.Add(box2, 0, wxEXPAND|wxALL, 10)
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self.SetSizer(sizer)
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self.SetAutoLayout(true)
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def __del__(self):
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if self.process is not None:
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self.process.Detach()
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self.process.CloseOutput()
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self.process = None
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def OnExecuteBtn(self, evt):
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cmd = self.cmd.GetValue()
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self.process = wxProcess(self)
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self.process.Redirect();
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pid = wxExecute(cmd, false, self.process)
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self.log.write('OnExecuteBtn: "%s" pid: %s\n' % (cmd, pid))
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self.inp.Enable(true)
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self.sndBtn.Enable(true)
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self.termBtn.Enable(true)
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self.cmd.Enable(false)
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self.exBtn.Enable(false)
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self.inp.SetFocus()
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def OnSendText(self, evt):
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text = self.inp.GetValue()
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self.inp.SetValue('')
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self.log.write('OnSendText: "%s"\n' % text)
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self.process.GetOutputStream().write(text + '\n')
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self.inp.SetFocus()
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def OnCloseStream(self, evt):
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self.log.write('OnCloseStream\n')
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self.process.CloseOutput()
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def OnIdle(self, evt):
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if self.process is not None:
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stream = self.process.GetInputStream()
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# Yes, this is weird. For this particular stream, EOF
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# simply means that there is no data available to be read,
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# not truly the end of file. Also, read() just reads all
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# the currently available data, not until the real EOF...
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if not stream.eof():
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text = stream.read()
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self.out.AppendText(text)
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def OnProcessEnded(self, evt):
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self.log.write('OnProcessEnded, pid:%s, exitCode: %s\n' %
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(evt.GetPid(), evt.GetExitCode()))
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stream = self.process.GetInputStream()
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if not stream.eof():
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text = stream.read()
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self.out.AppendText(text)
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self.process.Destroy()
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self.process = None
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self.inp.Enable(false)
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self.sndBtn.Enable(false)
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self.termBtn.Enable(false)
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self.cmd.Enable(true)
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self.exBtn.Enable(true)
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#----------------------------------------------------------------------
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def runTest(frame, nb, log):
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win = TestPanel(nb, -1, log)
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return win
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#----------------------------------------------------------------------
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overview = """\
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<html><body>
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<h2>wxProcess</h2>
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wxProcess lets you get notified when an asyncronous child process
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started by wxExecute terminates, and also to get input/output streams
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for the child process's stdout, stderr and stdin.
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<p>
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This demo launches a simple python script that echos back on stdout
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lines that it reads from stdin. You can send text to the echo
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process' stdin by typing in the lower textctrl and clicking Send.
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<p>
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Clicking the Close Stream button will close the demo's end of the
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stdin pipe to the child process. In our case that will cause the
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child process to exit its main loop.
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</body><html>
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"""
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