import wx, sys, re

class StdOutRich(wx.richtext.RichTextCtrl):
    """A rich text ctrl for handling stdout/stderr
    """
    def __init__(self, parent, style):
        wx.richtext.RichTextCtrl.__init__(self,parent=parent, style=style)
        self.parent=parent
        self.Bind(wx.EVT_TEXT_URL, parent.onURL)
        #define style for filename links (URLS) needs wx as late as 2.8.4.0
        #self.urlStyle = wx.richtext.RichTextAttr()
        #self.urlStyle.SetTextColour(wx.BLUE)
        #self.urlStyle.SetFontWeight(wx.BOLD)
        #self.urlStyle.SetFontUnderlined(False)
        
    def write(self,inStr):
        self.MoveEnd()#always 'append' text rather than 'writing' it
        """tracebacks have the form:
        Traceback (most recent call last):
        File "C:\Program Files\wxPython2.8 Docs and Demos\samples\hangman\hangman.py", line 21, in <module>
            class WordFetcher:
        File "C:\Program Files\wxPython2.8 Docs and Demos\samples\hangman\hangman.py", line 23, in WordFetcher
        """
        for thisLine in inStr.splitlines(True):
            if len(re.findall('".*", line.*',thisLine))>0:
                #this line contains a file/line location so write as URL 
                #self.BeginStyle(self.urlStyle) #this should be done with styles, but they don't exist in wx as late as 2.8.4.0
                self.BeginBold()
                self.BeginTextColour(wx.BLUE)
                self.BeginURL(thisLine)
                self.WriteText(thisLine)
                self.EndURL()
                self.EndBold()
                self.EndTextColour()
            elif len(re.findall('WARNING',thisLine))>0:
                self.BeginTextColour([0,150,0])  
                self.WriteText(thisLine)
                self.EndTextColour()     
            elif len(re.findall('ERROR', thisLine))>0:
                self.BeginTextColour([150,0,0])
                self.WriteText(thisLine)
                self.EndTextColour()         
            else:
                #line to write as simple text
                self.WriteText(thisLine)
        self.MoveEnd()#go to end of stdout so user can see updated text
        self.ShowPosition(self.GetLastPosition() )

    def flush(self):
        pass#we need this so that stdout has a flush method, but can't do much with it
        
class StdOutFrame(wx.Frame):
    """A frame for holding stdOut/stdErr with ability to save and clear
    """
    def __init__(self, parent=None, ID=-1, app=None, title="PsychoPy output", size=wx.DefaultSize):
        wx.Frame.__init__(self, parent, ID, title)
        panel = wx.Panel(self)
        
        self.parent=parent#e.g. the builder frame
        self.app=app
        self.stdoutOrig=sys.stdout
        self.stderrOrig=sys.stderr
        self.lenLastRun=0
        
        self.menuBar = wx.MenuBar()
        self.fileMenu = wx.Menu()
#        item = self.fileMenu.Append(wx.ID_SAVE,   "&Save output window\t%s" %app.keys['save'])
#        self.Bind(wx.EVT_MENU, self.save, item)
        item = self.fileMenu.Append(wx.ID_CLOSE,   "&Close output window\t%s" %app.keys['close'])
        self.Bind(wx.EVT_MENU, self.closeFrame, item)
        self.fileMenu.AppendSeparator()
        item = self.fileMenu.Append(wx.ID_EXIT, "&Quit (PsychoPy)\t%s" %app.keys['quit'], "Terminate the application")
        self.Bind(wx.EVT_MENU, self.quit, item)

        self.menuBar.Append(self.fileMenu, "&File")
        self.SetMenuBar(self.menuBar)
        
        self.stdoutCtrl = StdOutRich(parent=self, style=wx.TE_MULTILINE)
        
        self.mainSizer=wx.BoxSizer(wx.VERTICAL)
        self.mainSizer.Add(self.stdoutCtrl)
        self.SetSizerAndFit(self.mainSizer)
        self.Center()
    def quit(self, event=None):
        """quit entire app
        """
        self.Destroy()
        self.app.quit()
    def checkSave(self):
        return 1
    def closeFrame(self, checkSave=False):
        #the app (or frame of the app) should control the redirection of stdout,
        #but just in case the user closes the window while it is receiving input
        #we should direct it back to orig
        sys.stdout=self.stdoutOrig
        sys.stderr=self.stderrOrig
        self.Hide()
    def saveAs(self):
        pass
    def save(self):
        pass
    def write(self, text):
        self.stdoutCtrl.write(text)    
    def flush(self):
        self.stdoutCtrl.flush()
    def onURL(self, evt):
        self.parent.onURL(evt)#just pass this one on
    def getText(self):
        """Return the text of the current buffer
        """
        return self.stdoutCtrl.GetValue()
        