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import wx

def OnMarginClick(evt, text_id):

    # fold and unfold as needed

    CurrentWidget = wx.FindWindowById(text_id)

    if evt.GetMargin() == 2:

        if evt.GetShift() and evt.GetControl():

            FoldAll(text_id)

        else:

            lineClicked = CurrentWidget.LineFromPosition(evt.GetPosition())



            if CurrentWidget.GetFoldLevel(lineClicked) & wx.stc.STC_FOLDLEVELHEADERFLAG:

                if evt.GetShift():

                    CurrentWidget.SetFoldExpanded(lineClicked, True)

                    Expand(text_id,lineClicked, True, True, 1)

                elif evt.GetControl():

                    if CurrentWidget.GetFoldExpanded(lineClicked):

                       CurrentWidget.SetFoldExpanded(lineClicked, False)

                       Expand(text_id,lineClicked, False, True, 0)

                    else:

                        CurrentWidget.SetFoldExpanded(lineClicked, True)

                        Expand(text_id,lineClicked, True, True, 100)

                else:

                    CurrentWidget.ToggleFold(lineClicked)

    evt.Skip()







def FoldAll(text_id):

    CurrentWidget = wx.FindWindowById(text_id)

    lineCount = CurrentWidget.GetLineCount()

    expanding = True



    # find out if we are folding or unfolding

    for lineNum in range(lineCount):

         if CurrentWidget.GetFoldLevel(lineNum) & wx.stc.STC_FOLDLEVELHEADERFLAG:

             expanding = not CurrentWidget.GetFoldExpanded(lineNum)

             break



    lineNum = 0



    while lineNum < lineCount:

        level = CurrentWidget.GetFoldLevel(lineNum)

        if level & wx.stc.STC_FOLDLEVELHEADERFLAG and \

           (level & wx.stc.STC_FOLDLEVELNUMBERMASK) == wx.stc.STC_FOLDLEVELBASE:



            if expanding:

                CurrentWidget.SetFoldExpanded(lineNum, True)

                lineNum = Expand(text_id,lineNum, True)

                lineNum = lineNum - 1

            else:

                lastChild = CurrentWidget.GetLastChild(lineNum, -1)

                CurrentWidget.SetFoldExpanded(lineNum, False)



                if lastChild > lineNum:

                    CurrentWidget.HideLines(lineNum+1, lastChild)



        lineNum = lineNum + 1







def Expand(text_id,line, doExpand, force=False, visLevels=0, level=-1):

    CurrentWidget = wx.FindWindowById(text_id)

    lastChild = CurrentWidget.GetLastChild(line, level)

    line = line + 1



    while line <= lastChild:

        if force:

            if visLevels > 0:

                CurrentWidget.ShowLines(line, line)

            else:

                CurrentWidget.HideLines(line, line)

        else:

            if doExpand:

                CurrentWidget.ShowLines(line, line)



        if level == -1:

            level = CurrentWidget.GetFoldLevel(line)



        if level & wx.stc.STC_FOLDLEVELHEADERFLAG:

            if force:

                if visLevels > 1:

                    CurrentWidget.SetFoldExpanded(line, True)

                else:

                    CurrentWidget.SetFoldExpanded(line, False)



                line = Expand(text_id ,line, doExpand, force, visLevels-1)



            else:

                if doExpand and CurrentWidget.GetFoldExpanded(line):

                    line = Expand(text_id, line, True, force, visLevels-1)

                else:

                    line = Expand(text_id, line, False, force, visLevels-1)

        else:

            line = line + 1



    return line