X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c6281ceb776325251aa119c7b496e6152303996a..299647acac7960652aadb008775429c1f8ea9b8d:/wxPython/demo/Process.py

diff --git a/wxPython/demo/Process.py b/wxPython/demo/Process.py
new file mode 100644
index 0000000000..42c46c2cd6
--- /dev/null
+++ b/wxPython/demo/Process.py
@@ -0,0 +1,165 @@
+# 11/20/2003 - Jeff Grimmett (grimmtooth@softhome.net)
+#
+# o Updated for wx namespace
+# 
+
+import  wx
+
+#----------------------------------------------------------------------
+
+class TestPanel(wx.Panel):
+    def __init__(self, parent, ID, log):
+        wx.Panel.__init__(self, parent, ID)
+        self.log = log
+
+        self.process = None
+        self.Bind(wx.EVT_IDLE, self.OnIdle)
+
+        # We can either derive from wxProcess and override OnTerminate
+        # or we can let wxProcess send this window an event that is
+        # caught in the normal way...
+        self.Bind(wx.EVT_END_PROCESS, self.OnProcessEnded)
+
+
+        # Make the controls
+        prompt = wx.StaticText(self, -1, 'Command line:')
+        self.cmd = wx.TextCtrl(self, -1, 'python -u data/echo.py')
+        self.exBtn = wx.Button(self, -1, 'Execute')
+
+        self.out = wx.TextCtrl(self, -1, '', style=wx.TE_MULTILINE|wx.TE_READONLY)
+
+        self.inp = wx.TextCtrl(self, -1, '', style=wx.TE_PROCESS_ENTER)
+        self.sndBtn = wx.Button(self, -1, 'Send')
+        self.termBtn = wx.Button(self, -1, 'Close Stream')
+        self.inp.Enable(False)
+        self.sndBtn.Enable(False)
+        self.termBtn.Enable(False)
+
+        # Hook up the events
+        self.Bind(wx.EVT_BUTTON, self.OnExecuteBtn, self.exBtn)
+        self.Bind(wx.EVT_BUTTON, self.OnSendText, self.sndBtn)
+        self.Bind(wx.EVT_BUTTON, self.OnCloseStream, self.termBtn)
+        self.Bind(wx.EVT_TEXT_ENTER, self.OnSendText, self.inp)
+
+
+        # Do the layout
+        box1 = wx.BoxSizer(wx.HORIZONTAL)
+        box1.Add(prompt, 0, wx.ALIGN_CENTER)
+        box1.Add(self.cmd, 1, wx.ALIGN_CENTER|wx.LEFT|wx.RIGHT, 5)
+        box1.Add(self.exBtn, 0)
+
+        box2 = wx.BoxSizer(wx.HORIZONTAL)
+        box2.Add(self.inp, 1, wx.ALIGN_CENTER)
+        box2.Add(self.sndBtn, 0, wx.LEFT, 5)
+        box2.Add(self.termBtn, 0, wx.LEFT, 5)
+
+        sizer = wx.BoxSizer(wx.VERTICAL)
+        sizer.Add(box1, 0, wx.EXPAND|wx.ALL, 10)
+        sizer.Add(self.out, 1, wx.EXPAND|wx.ALL, 10)
+        sizer.Add(box2, 0, wx.EXPAND|wx.ALL, 10)
+
+        self.SetSizer(sizer)
+        self.SetAutoLayout(True)
+
+
+    def __del__(self):
+        if self.process is not None:
+            self.process.Detach()
+            self.process.CloseOutput()
+            self.process = None
+
+
+    def OnExecuteBtn(self, evt):
+        cmd = self.cmd.GetValue()
+
+        self.process = wx.Process(self)
+        self.process.Redirect();
+        pid = wx.Execute(cmd, wx.EXEC_ASYNC, self.process)
+        self.log.write('OnExecuteBtn: "%s" pid: %s\n' % (cmd, pid))
+
+        self.inp.Enable(True)
+        self.sndBtn.Enable(True)
+        self.termBtn.Enable(True)
+        self.cmd.Enable(False)
+        self.exBtn.Enable(False)
+        self.inp.SetFocus()
+
+
+    def OnSendText(self, evt):
+        text = self.inp.GetValue()
+        self.inp.SetValue('')
+        self.log.write('OnSendText: "%s"\n' % text)
+        self.process.GetOutputStream().write(text + '\n')
+        self.inp.SetFocus()
+
+
+    def OnCloseStream(self, evt):
+        self.log.write('OnCloseStream\n')
+        #print "b4 CloseOutput"
+        self.process.CloseOutput()
+        #print "after CloseOutput"
+
+    def OnIdle(self, evt):
+        if self.process is not None:
+            stream = self.process.GetInputStream()
+
+            if stream.CanRead():
+                text = stream.read()
+                self.out.AppendText(text)
+
+
+    def OnProcessEnded(self, evt):
+        self.log.write('OnProcessEnded, pid:%s,  exitCode: %s\n' %
+                       (evt.GetPid(), evt.GetExitCode()))
+
+        stream = self.process.GetInputStream()
+
+        if stream.CanRead():
+            text = stream.read()
+            self.out.AppendText(text)
+
+        self.process.Destroy()
+        self.process = None
+        self.inp.Enable(False)
+        self.sndBtn.Enable(False)
+        self.termBtn.Enable(False)
+        self.cmd.Enable(True)
+        self.exBtn.Enable(True)
+
+
+#----------------------------------------------------------------------
+
+def runTest(frame, nb, log):
+    win = TestPanel(nb, -1, log)
+    return win
+
+
+#----------------------------------------------------------------------
+
+
+overview = """\
+<html><body>
+<h2>wxProcess</h2>
+
+wxProcess lets you get notified when an asyncronous child process
+started by wxExecute terminates, and also to get input/output streams
+for the child process's stdout, stderr and stdin.
+
+<p>
+This demo launches a simple python script that echos back on stdout
+lines that it reads from stdin.  You can send text to the echo
+process' stdin by typing in the lower textctrl and clicking Send.
+
+<p>
+Clicking the Close Stream button will close the demo's end of the
+stdin pipe to the child process.  In our case that will cause the
+child process to exit its main loop.
+
+</body><html>
+"""
+
+
+if __name__ == '__main__':
+    import sys,os
+    import run
+    run.main(['', os.path.basename(sys.argv[0])])