+This is a fairly rudimentary, but slightly fancier tha
+wxPyOnDemandOutputWindow (on which it's based; thanks Robin), version
+of the same sort of thing: a file-like class called
+wxInformationalMessagesFrame. This window also has a status bar with a
+couple of buttons for controlling the echoing of all output to a file
+with a randomly-chosen filename...
+
+The class behaves similarly to wxPyOnDemandOutputWindow in that (at
+least by default) the frame does not appear until written to, but is
+somewhat different in that, either under programmatic (the
+DisableOutput method) or user (the frame's close button, it's status
+bar's "Dismiss" button, or a "Disable output" item of some menu,
+perhaps of some other frame), the frame will be destroyed, an
+associated file closed, and writing to it will then do nothing. This
+can be reversed: either under programmatic (the EnableOutput method)
+or user (an "Enable output" item of some menu), a new frame will be
+opened,And an associated file (with a "randomly"selected filename)
+opened for writing [to which all subsequent displayed messages will be
+echoed].
+
+Please note that, like wxPyOnDemandOutputWindow, the instance is not
+itself a subclass of wxWindow: when the window is open (and ONLY
+then), it's "frame" attribute is the actual instance of wFrame...
+
+Typical usage:
+ from wxPython.lib.infoframe import *
+ ... # ... modify your wxApp as follows:
+ class myApp(wxApp):
+ outputWindowClass = PyInformationalMessagesFrame
+ ...
+If you're running on Linux, you'll also have to supply an argument 1 to your
+constructor of myApp to redirect stdout/stderr to this window (it's done
+automatically for you on Windows).
+
+If you don't want to redirect stdout/stderr, but use the class directly: do
+it this way:
+
+ InformationalMessagesFrame = PyInformationalMessagesFrame\
+ ([options from progname (default ""),
+ txt (default "informational
+ messages"])
+#^^^^ early in the program
+...
+InformationalMessagesFrame([comma-separated list of items to
+ display. Note that these will never
+ be separated by spaces as they may
+ be when used in the Python 'print'
+ command])
+
+The latter statement, of course, may be repeated arbitrarily often.
+The window will not appear until it is written to, and it may be
+manually closed by the user, after which it will reappear again until
+written to... Also note that all output is echoed to a file with a
+randomly-generated name [see the mktemp module in the standard
+library], in the directory given as the 'dir' keyword argument to the
+InformationalMessagesFrame constructor [which has a default value of
+'.'), or set via the method SetOutputDirectory... This file will be
+closed with the window--a new one will be created [by default] upon
+each subsequent reopening.
+
+Please also note the methods EnableOutput and DisableOutput, and the
+possible arguments for the constructor in the code below... (* TO DO:
+explain this here...*) Neither of these methods need be used at all,
+and in this case the frame will only be displayed once it has been
+written to, like wxPyOnDemandOutputWindow.
+
+The former, EnableOutput, displays the frame with an introductory
+message, opens a random file to which future displayed output also
+goes (unless the nofile attribute is present), and sets the __debug__
+variable of each module to 1 (unless the no __debug__ attribute is
+present]. This is so that you can say, in any module whatsoever,
+
+ if __debug__:
+ InformationalMessagesFrame("... with lots of %<Character> constructs"
+ % TUPLE)
+
+without worrying about the overhead of evaluating the arguments, and
+calling the wxInformationalMessagesFrame instance, in the case where
+debugging is not turned on. (This won't happen if the instance has an
+attribute no__debug__; you can arrange this by sub-classing...)
+
+"Debug mode" can also be turned on by selecting the item-"Enable
+output" from the "Debug" menu [the default--see the optional arguments
+to the SetOtherMenuBar method] of a frame which has been either passed
+appropriately to the constructor of the wxInformationalMessagesFrame
+(see the code), or set via the SetOtherMenuBar method thereof. This
+also writes an empty string to the instance, meaning that the frame
+will open (unless DisablOutput has been called) with an appropriate
+introductory message (which will vary according to whether the
+instance/class has the "no __debug__" attribute)^ I have found this to
+be an extremely useful tool, in lieu of a full wxPython debugger...
+
+Following this, the menu item is also disabled, and an item "Disable
+output" (again, by default) is enabled. Note that these need not be
+done: e.g., you don't NEED to have a menu with appropriate items; in
+this case simply do not call the SetOtherMenuBar method or use the
+othermenubar keyword argument of the class instance constructor.
+
+The DisableOutput method does the reverse of this; it closes the
+window (and associated file), and sets the __debug__ variable of each
+module whose name begins with a capital letter {this happens to be the
+author's personal practice; all my python module start with capital
+letters} to 0. It also enables/disabled the appropriate menu items,
+if this was done previously (or SetOtherMenuBar has been called...).
+Note too that after a call to DisableOutput, nothing further will be
+done upon subsequent write()'s, until the EnableOutput method is
+called, either explicitly or by the menu selection above...
+
+Finally, note that the file-like method close() destroys the window
+(and closes any associated file) and there is a file-like method
+write() which displays it's argument.
+
+All (well, most) of this is made clear by the example code at the end
+of this file, which is run if the file is run by itself; otherwise,
+see the appropriate "stub" file in the wxPython demo.
+
+"""
+
+import os
+import sys
+import tempfile
+
+import wx
+
+class _MyStatusBar(wx.StatusBar):
+ def __init__(self, parent, callbacks=None, useopenbutton=0):
+ wx.StatusBar.__init__(self, parent, -1, style=wx.TAB_TRAVERSAL)
+ self.SetFieldsCount(3)
+
+ self.SetStatusText("",0)
+
+ self.button1 = wx.Button(self, -1, "Dismiss", style=wx.TAB_TRAVERSAL)
+ self.Bind(wx.EVT_BUTTON, self.OnButton1, self.button1)
+
+ if not useopenbutton:
+ self.button2 = wx.Button(self, -1, "Close File", style=wx.TAB_TRAVERSAL)
+ else:
+ self.button2 = wx.Button(self, -1, "Open New File", style=wx.TAB_TRAVERSAL)
+
+ self.Bind(wx.EVT_BUTTON, self.OnButton2, self.button2)
+ self.useopenbutton = useopenbutton
+ self.callbacks = callbacks
+
+ # figure out how tall to make the status bar
+ dc = wx.ClientDC(self)
+ dc.SetFont(self.GetFont())
+ (w,h) = dc.GetTextExtent('X')
+ h = int(h * 1.8)
+ self.SetSize((100, h))
+ self.OnSize("dummy")
+ self.Bind(wx.EVT_SIZE, self.OnSize)
+
+ # reposition things...
+ def OnSize(self, event):
+ self.CalculateSizes()
+ rect = self.GetFieldRect(1)
+ self.button1.SetPosition((rect.x+5, rect.y+2))
+ self.button1.SetSize((rect.width-10, rect.height-4))
+ rect = self.GetFieldRect(2)
+ self.button2.SetPosition((rect.x+5, rect.y+2))
+ self.button2.SetSize((rect.width-10, rect.height-4))
+
+ # widths........
+ def CalculateSizes(self):
+ dc = wx.ClientDC(self.button1)
+ dc.SetFont(self.button1.GetFont())
+ (w1,h) = dc.GetTextExtent(self.button1.GetLabel())
+
+ dc = wx.ClientDC(self.button2)
+ dc.SetFont(self.button2.GetFont())
+ (w2,h) = dc.GetTextExtent(self.button2.GetLabel())
+
+ self.SetStatusWidths([-1,w1+15,w2+15])
+
+ def OnButton1(self,event):
+ self.callbacks[0] ()
+
+ def OnButton2(self,event):
+ if self.useopenbutton and self.callbacks[2] ():
+ self.button2.SetLabel ("Close File")
+ elif self.callbacks[1] ():
+ self.button2.SetLabel ("Open New File")
+
+ self.useopenbutton = 1 - self.useopenbutton
+ self.OnSize("")
+ self.button2.Refresh(True)
+ self.Refresh()
+
+
+
+class PyInformationalMessagesFrame:
+ def __init__(self,
+ progname="",
+ text="informational messages",
+ dir='.',
+ menuname="Debug",
+ enableitem="Enable output",
+ disableitem="Disable output",
+ othermenubar=None):
+
+ self.SetOtherMenuBar(othermenubar,
+ menuname=menuname,
+ enableitem=enableitem,
+ disableitem=disableitem)
+
+ if hasattr(self,"othermenu") and self.othermenu is not None:
+ i = self.othermenu.FindMenuItem(self.menuname,self.disableitem)
+ self.othermenu.Enable(i,0)
+ i = self.othermenu.FindMenuItem(self.menuname,self.enableitem)
+ self.othermenu.Enable(i,1)
+
+ self.frame = None
+ self.title = "%s %s" % (progname,text)
+ self.parent = None # use the SetParent method if desired...
+ self.softspace = 1 # of rather limited use
+
+ if dir:
+ self.SetOutputDirectory(dir)
+
+
+ def SetParent(self, parent):
+ self.parent = parent
+
+
+ def SetOtherMenuBar(self,
+ othermenu,
+ menuname="Debug",
+ enableitem="Enable output",
+ disableitem="Disable output"):
+ self.othermenu = othermenu
+ self.menuname = menuname
+ self.enableitem = enableitem
+ self.disableitem = disableitem
+
+
+ f = None
+
+
+ def write(self, string):
+ if not wx.Thread_IsMain():
+ # Aquire the GUI mutex before making GUI calls. Mutex is released
+ # when locker is deleted at the end of this function.
+ #
+ # TODO: This should be updated to use wx.CallAfter similarly to how
+ # PyOnDemandOutputWindow.write was so it is not necessary
+ # to get the gui mutex
+ locker = wx.MutexGuiLocker()
+
+ if self.Enabled:
+ if self.f:
+ self.f.write(string)
+ self.f.flush()
+
+ move = 1
+ if (hasattr(self,"text")
+ and self.text is not None
+ and self.text.GetInsertionPoint() != self.text.GetLastPosition()):
+ move = 0
+
+ if not self.frame:
+ self.frame = wx.Frame(self.parent, -1, self.title, size=(450, 300),
+ style=wx.DEFAULT_FRAME_STYLE|wx.NO_FULL_REPAINT_ON_RESIZE)
+
+ self.text = wx.TextCtrl(self.frame, -1, "",
+ style = wx.TE_MULTILINE|wx.TE_READONLY|wx.TE_RICH)
+
+ self.frame.sb = _MyStatusBar(self.frame,
+ callbacks=[self.DisableOutput,
+ self.CloseFile,
+ self.OpenNewFile],
+ useopenbutton=hasattr(self,
+ "nofile"))
+ self.frame.SetStatusBar(self.frame.sb)
+ self.frame.Show(True)
+ self.frame.Bind(wx.EVT_CLOSE, self.OnCloseWindow)
+
+ if hasattr(self,"nofile"):
+ self.text.AppendText(
+ "Please close this window (or select the "
+ "'Dismiss' button below) when desired. By "
+ "default all messages written to this window "
+ "will NOT be written to a file--you "
+ "may change this by selecting 'Open New File' "
+ "below, allowing you to select a "
+ "new file...\n\n")
+ else:
+ tempfile.tempdir = self.dir
+ filename = os.path.abspath(tempfile.mktemp ())
+
+ self.text.AppendText(
+ "Please close this window (or select the "
+ "'Dismiss' button below) when desired. By "
+ "default all messages written to this window "
+ "will also be written to the file '%s'--you "
+ "may close this file by selecting 'Close "
+ "File' below, whereupon this button will be "
+ "replaced with one allowing you to select a "
+ "new file...\n\n" % filename)
+ try:
+ self.f = open(filename, 'w')
+ self.frame.sb.SetStatusText("File '%s' opened..."
+ % filename,
+ 0)
+ except EnvironmentError:
+ self.frame.sb.SetStatusText("File creation failed "
+ "(filename '%s')..."
+ % filename,
+ 0)
+ self.text.AppendText(string)
+
+ if move:
+ self.text.ShowPosition(self.text.GetLastPosition())
+
+ if not hasattr(self,"no__debug__"):
+ for m in sys.modules.values():
+ if m is not None:# and m.__dict__.has_key("__debug__"):
+ m.__dict__["__debug__"] = 1
+
+ if hasattr(self,"othermenu") and self.othermenu is not None:
+ i = self.othermenu.FindMenuItem(self.menuname,self.disableitem)
+ self.othermenu.Enable(i,1)
+ i = self.othermenu.FindMenuItem(self.menuname,self.enableitem)
+ self.othermenu.Enable(i,0)
+
+
+ Enabled = 1
+
+ def OnCloseWindow(self, event, exiting=0):
+ if self.f:
+ self.f.close()
+ self.f = None
+
+ if (hasattr(self,"othermenu") and self.othermenu is not None
+ and self.frame is not None
+ and not exiting):
+
+ i = self.othermenu.FindMenuItem(self.menuname,self.disableitem)
+ self.othermenu.Enable(i,0)
+ i = self.othermenu.FindMenuItem(self.menuname,self.enableitem)
+ self.othermenu.Enable(i,1)
+
+ if not hasattr(self,"no__debug__"):
+ for m in sys.modules.values():
+ if m is not None:# and m.__dict__.has_key("__debug__"):
+ m.__dict__["__debug__"] = 0
+
+ if self.frame is not None: # typically True, but, e.g., allows
+ # DisableOutput method (which calls this
+ # one) to be called when the frame is not
+ # actually open, so that it is always safe
+ # to call this method...
+ frame = self.frame
+ self.frame = self.text = None
+ frame.Destroy()
+ self.Enabled = 1
+
+
+ def EnableOutput(self,
+ event=None,# event must be the first optional argument...
+ othermenubar=None,
+ menuname="Debug",
+ enableitem="Enable output",
+ disableitem="Disable output"):
+
+ if othermenubar is not None:
+ self.SetOtherMenuBar(othermenubar,
+ menuname=menuname,
+ enableitem=enableitem,
+ disableitem=disableitem)
+ self.Enabled = 1
+ if self.f:
+ self.f.close()
+ self.f = None
+ self.write("")
+
+
+ def CloseFile(self):
+ if self.f:
+ if self.frame:
+ self.frame.sb.SetStatusText("File '%s' closed..."
+ % os.path.abspath(self.f.name),
+ 0)
+ self.f.close ()
+ self.f = None
+ else:
+ if self.frame:
+ self.frame.sb.SetStatusText("")
+ if self.frame:
+ self.frame.sb.Refresh()
+ return 1
+
+
+ def OpenNewFile(self):
+ self.CloseFile()
+ dlg = wx.FileDialog(self.frame,
+ "Choose a new log file", self.dir,"","*",
+ wx.SAVE | wx.HIDE_READONLY | wx.OVERWRITE_PROMPT)
+ if dlg.ShowModal() == wx.ID_CANCEL:
+ dlg.Destroy()
+ return 0
+ else:
+ try:
+ self.f = open(os.path.abspath(dlg.GetPath()),'w')
+ except EnvironmentError:
+ dlg.Destroy()
+ return 0
+ dlg.Destroy()
+ if self.frame:
+ self.frame.sb.SetStatusText("File '%s' opened..."
+ % os.path.abspath(self.f.name),
+ 0)
+ if hasattr(self,"nofile"):
+ self.frame.sb = _MyStatusBar(self.frame,
+ callbacks=[self.DisableOutput,
+ self.CloseFile,
+ self.OpenNewFile])
+ self.frame.SetStatusBar(self.frame.sb)
+ if hasattr(self,"nofile"):
+ delattr(self,"nofile")
+ return 1
+
+
+ def DisableOutput(self,
+ event=None,# event must be the first optional argument...
+ exiting=0):
+ self.write("<InformationalMessagesFrame>.DisableOutput()\n")
+ if hasattr(self,"frame") \
+ and self.frame is not None:
+ self.OnCloseWindow("Dummy",exiting=exiting)
+ self.Enabled = 0
+
+
+ def close(self):
+ self.DisableOutput()
+
+
+ def flush(self):
+ if self.text:
+ self.text.SetInsertionPointEnd()
+ wx.Yield()
+
+
+ def __call__(self,* args):
+ for s in args:
+ self.write (str (s))
+
+
+ def SetOutputDirectory(self,dir):
+ self.dir = os.path.abspath(dir)
+## sys.__stderr__.write("Directory: os.path.abspath(%s) = %s\n"
+## % (dir,self.dir))
+
+
+
+class Dummy_PyInformationalMessagesFrame:
+ def __init__(self,progname=""):
+ self.softspace = 1
+ def __call__(self,*args):
+ pass
+ def write(self,s):
+ pass
+ def flush(self):
+ pass
+ def close(self):
+ pass
+ def EnableOutput(self):
+ pass
+ def __call__(self,* args):
+ pass
+ def DisableOutput(self,exiting=0):
+ pass
+ def SetParent(self,wX):
+ pass
projects / wxWidgets.git / blobdiff