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ipython_history.py

#!/usr/bin/python
# -*- coding: iso-8859-15 -*-
import wx
import wx.stc  as  stc
import keyword

#-----------------------------------------
# History widget for IPython
__version__ = 0.5
__author__  = "Laurent Dufrechou"
__email__   = "laurent.dufrechou _at_ gmail.com"
__license__ = "BSD"
#-----------------------------------------
class IPythonHistoryPanel(wx.Panel):

    def __init__(self, parent,flt_empty=True,
                 flt_doc=True,flt_cmd=True,flt_magic=True):
        
        wx.Panel.__init__(self,parent,-1)
        #text_ctrl = wx.TextCtrl(self, -1, style=wx.TE_MULTILINE)
        text_ctrl = PythonSTC(self, -1)
        
        
        st_filt = wx.StaticText(self, -1, " Filter:")

        self.filter_empty = wx.CheckBox(self, -1, "Empty commands")
        self.filter_doc   = wx.CheckBox(self, -1, "?: Doc commands")
        self.filter_cmd   = wx.CheckBox(self, -1, "!: Sys commands")
        self.filter_magic = wx.CheckBox(self, -1, "%: Magic keys")

        self.options={'filter_empty':{'value':'True',
                                'checkbox':self.filter_empty, \
                                                'True':True,'False':False,
                                'setfunc':lambda x:None},
                      'filter_doc':{'value':'True',
                                'checkbox':self.filter_doc, \
                                                'True':True,'False':False,
                                'setfunc':lambda x:None},
                      'filter_cmd':{'value':'True',
                                'checkbox':self.filter_cmd, \
                                                'True':True,'False':False,
                                'setfunc':lambda x:None},
                      'filter_magic':{'value':'True',
                                'checkbox':self.filter_magic, \
                                                'True':True,'False':False,
                                'setfunc':lambda x:None},
                     }
        self.reloadOptions(self.options)

        self.filter_empty.Bind(wx.EVT_CHECKBOX, self.evtCheckEmptyFilter)
        self.filter_doc.Bind(wx.EVT_CHECKBOX, self.evtCheckDocFilter)
        self.filter_cmd.Bind(wx.EVT_CHECKBOX, self.evtCheckCmdFilter)
        self.filter_magic.Bind(wx.EVT_CHECKBOX, self.evtCheckMagicFilter)
        
        #self.filter_empty.SetValue(flt_empty)
        #self.filter_doc.SetValue(flt_doc)
        #self.filter_cmd.SetValue(flt_cmd)
        #self.filter_magic.SetValue(flt_magic)
        
        sizer = wx.BoxSizer(wx.VERTICAL)

        sizer.Add(text_ctrl, 1, wx.EXPAND)
        sizer.AddMany( [(5,5),
                        st_filt,
                        (10,10),
                        self.filter_empty,
                        self.filter_doc,
                        self.filter_cmd,
                        self.filter_magic,
                        (10,10),
                        ])
        self.SetAutoLayout(True)
        sizer.Fit(self)
        sizer.SetSizeHints(self)
        self.SetSizer(sizer)
        self.text_ctrl=text_ctrl
        #text_ctrl.SetText(demoText + open('Main.py').read())
        text_ctrl.EmptyUndoBuffer()
        text_ctrl.Colourise(0, -1)

        # line numbers in the margin
        text_ctrl.SetMarginType(1, stc.STC_MARGIN_NUMBER)
        text_ctrl.SetMarginWidth(1, 15)

        
    def write(self,history_line):
        add = True
        if self.filter_empty.GetValue() == True and history_line == '':
            add = False
        if len(history_line)>0:
            if self.filter_doc.GetValue() == True and history_line[-1:] == '?':
                add = False
            if self.filter_cmd.GetValue() == True and history_line[0] == '!':
                add = False
            if self.filter_magic.GetValue() == True and history_line[0] == '%':
                add = False
        if add:
                self.text_ctrl.AppendText(history_line+'\n')

#------------------------ Option Section -----------------------------------
    def processOptionCheckedEvt(self, event, name):
        if event.IsChecked():
            self.options[name]['value']='True'
        else:
            self.options[name]['value']='False'
        self.updateOptionTracker(name,
                                 self.options[name]['value'])
        
    def evtCheckEmptyFilter(self, event):
        self.processOptionCheckedEvt(event, 'filter_empty')
        
    def evtCheckDocFilter(self, event):
        self.processOptionCheckedEvt(event, 'filter_doc')

    def evtCheckCmdFilter(self, event):
        self.processOptionCheckedEvt(event, 'filter_cmd')

    def evtCheckMagicFilter(self, event):
        self.processOptionCheckedEvt(event, 'filter_magic')
        
    def getOptions(self):
        return self.options
    
    def reloadOptions(self,options):
        self.options = options
        for key in self.options.keys():
            value = self.options[key]['value']
            self.options[key]['checkbox'].SetValue(self.options[key][value])
            self.options[key]['setfunc'](value)

#------------------------ Hook Section -----------------------------------
    def updateOptionTracker(self,name,value):
        '''
        Default history tracker (does nothing)
        '''
        pass
    
    def setOptionTrackerHook(self,func):
        '''
        Define a new history tracker
        '''
        self.updateOptionTracker = func

            
#----------------------------------------------------------------------
# Font definition for Styled Text Control

if wx.Platform == '__WXMSW__':
    faces = { 'times': 'Times New Roman',
              'mono' : 'Courier New',
              'helv' : 'Arial',
              'other': 'Comic Sans MS',
              'size' : 8,
              'size2': 6,
             }
elif wx.Platform == '__WXMAC__':
    faces = { 'times': 'Times New Roman',
              'mono' : 'Monaco',
              'helv' : 'Arial',
              'other': 'Comic Sans MS',
              'size' : 8,
              'size2': 6,
             }
else:
    faces = { 'times': 'Times',
              'mono' : 'Courier',
              'helv' : 'Helvetica',
              'other': 'new century schoolbook',
              'size' : 8,
              'size2': 6,
             }


#----------------------------------------------------------------------

class PythonSTC(stc.StyledTextCtrl):

    fold_symbols = 3
    
    def __init__(self, parent, ID,
                 pos=wx.DefaultPosition, size=wx.DefaultSize,
                 style=0):
        stc.StyledTextCtrl.__init__(self, parent, ID, pos, size, style)
        #self.CmdKeyAssign(ord('B'), stc.STC_SCMOD_CTRL, stc.STC_CMD_ZOOMIN)
        #self.CmdKeyAssign(ord('N'), stc.STC_SCMOD_CTRL, stc.STC_CMD_ZOOMOUT)

        self.SetLexer(stc.STC_LEX_PYTHON)
        self.SetKeyWords(0, " ".join(keyword.kwlist))

        #self.SetProperty("fold", "1")
        #self.SetProperty("tab.timmy.whinge.level", "1")
        #self.SetMargins(0,0)

        #self.SetViewWhiteSpace(False)
        #self.SetBufferedDraw(False)
        #self.SetViewEOL(True)
        self.SetEOLMode(stc.STC_EOL_CRLF)
        #self.SetUseAntiAliasing(True)
        
        self.SetEdgeMode(stc.STC_EDGE_LINE)
        self.SetEdgeColumn(80)
        self.SetEdgeColour(wx.LIGHT_GREY)
        self.SetLayoutCache(stc.STC_CACHE_PAGE)

        # Setup a margin to hold fold markers
        #self.SetFoldFlags(16)  
        ###  WHAT IS THIS VALUE?  WHAT ARE THE OTHER FLAGS?  DOES IT MATTER?
        self.SetMarginType(2, stc.STC_MARGIN_SYMBOL)
        self.SetMarginMask(2, stc.STC_MASK_FOLDERS)
        self.SetMarginSensitive(2, True)
        self.SetMarginWidth(2, 12)

        if self.fold_symbols == 0:
            # Arrow pointing right for contracted folders, 
            # arrow pointing down for expanded
            self.MarkerDefine(stc.STC_MARKNUM_FOLDEROPEN, \
                                        stc.STC_MARK_ARROWDOWN, "black", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDER, \
                                        stc.STC_MARK_ARROW, "black", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDERSUB, \
                                        stc.STC_MARK_EMPTY, "black", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDERTAIL, \
                                        stc.STC_MARK_EMPTY, "black", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDEREND, \
                                        stc.STC_MARK_EMPTY,     "white", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDEROPENMID, \
                                        stc.STC_MARK_EMPTY,     "white", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDERMIDTAIL, \
                                        stc.STC_MARK_EMPTY,     "white", "black")
            
        elif self.fold_symbols == 1:
            # Plus for contracted folders, minus for expanded
            self.MarkerDefine(stc.STC_MARKNUM_FOLDEROPEN, \
                                        stc.STC_MARK_MINUS, "white", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDER, \
                                        stc.STC_MARK_PLUS,  "white", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDERSUB, \
                                        stc.STC_MARK_EMPTY, "white", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDERTAIL, \
                                        stc.STC_MARK_EMPTY, "white", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDEREND, \
                                        stc.STC_MARK_EMPTY, "white", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDEROPENMID, \
                                        stc.STC_MARK_EMPTY, "white", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDERMIDTAIL, \
                                        stc.STC_MARK_EMPTY, "white", "black")

        elif self.fold_symbols == 2:
            # Like a flattened tree control using circular headers and curved joins
            self.MarkerDefine(stc.STC_MARKNUM_FOLDEROPEN,  \
                                        stc.STC_MARK_CIRCLEMINUS, "white", "#404040")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDER, \
                                        stc.STC_MARK_CIRCLEPLUS, "white", "#404040")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDERSUB, \
                                        stc.STC_MARK_VLINE, "white", "#404040")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDERTAIL, \
                                        stc.STC_MARK_LCORNERCURVE, "white", "#404040")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDEREND, \
                                        stc.STC_MARK_CIRCLEPLUSCONNECTED, "white", "#404040")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDEROPENMID, \
                                        stc.STC_MARK_CIRCLEMINUSCONNECTED, "white", "#404040")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDERMIDTAIL, \
                                        stc.STC_MARK_TCORNERCURVE, "white", "#404040")

        elif self.fold_symbols == 3:
            # Like a flattened tree control using square headers
            self.MarkerDefine(stc.STC_MARKNUM_FOLDEROPEN, \
                                        stc.STC_MARK_BOXMINUS, "white", "#808080")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDER,  \
                                        stc.STC_MARK_BOXPLUS, "white", "#808080")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDERSUB, \
                                        stc.STC_MARK_VLINE, "white", "#808080")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDERTAIL, \
                                        stc.STC_MARK_LCORNER, "white", "#808080")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDEREND,  \
                                        stc.STC_MARK_BOXPLUSCONNECTED, "white", "#808080")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDEROPENMID, \
                                        stc.STC_MARK_BOXMINUSCONNECTED, "white", "#808080")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDERMIDTAIL, \
                                        stc.STC_MARK_TCORNER,           "white", "#808080")


        self.Bind(stc.EVT_STC_UPDATEUI, self.OnUpdateUI)
        self.Bind(stc.EVT_STC_MARGINCLICK, self.OnMarginClick)
        self.Bind(wx.EVT_KEY_DOWN, self.OnKeyPressed)

        # Make some styles,  The lexer defines what each style is used for, we
        # just have to define what each style looks like.  This set is adapted from
        # Scintilla sample property files.

        # Global default styles for all languages
        self.StyleSetSpec(stc.STC_STYLE_DEFAULT,     "face:%(helv)s,size:%(size)d" % faces)
        self.StyleClearAll()  # Reset all to be like the default

        # Global default styles for all languages
        self.StyleSetSpec(stc.STC_STYLE_DEFAULT,     "face:%(helv)s,size:%(size)d" % faces)
        self.StyleSetSpec(stc.STC_STYLE_LINENUMBER,  "back:#C0C0C0,face:%(helv)s,size:%(size2)d" % faces)
        self.StyleSetSpec(stc.STC_STYLE_CONTROLCHAR, "face:%(other)s" % faces)
        self.StyleSetSpec(stc.STC_STYLE_BRACELIGHT,  "fore:#FFFFFF,back:#0000FF,bold")
        self.StyleSetSpec(stc.STC_STYLE_BRACEBAD,    "fore:#000000,back:#FF0000,bold")

        # Python styles
        # Default 
        self.StyleSetSpec(stc.STC_P_DEFAULT, "fore:#000000,face:%(helv)s,size:%(size)d" % faces)
        # Comments
        self.StyleSetSpec(stc.STC_P_COMMENTLINE, "fore:#007F00,face:%(other)s,size:%(size)d" % faces)
        # Number
        self.StyleSetSpec(stc.STC_P_NUMBER, "fore:#007F7F,size:%(size)d" % faces)
        # String
        self.StyleSetSpec(stc.STC_P_STRING, "fore:#7F007F,face:%(helv)s,size:%(size)d" % faces)
        # Single quoted string
        self.StyleSetSpec(stc.STC_P_CHARACTER, "fore:#7F007F,face:%(helv)s,size:%(size)d" % faces)
        # Keyword
        self.StyleSetSpec(stc.STC_P_WORD, "fore:#00007F,bold,size:%(size)d" % faces)
        # Triple quotes
        self.StyleSetSpec(stc.STC_P_TRIPLE, "fore:#7F0000,size:%(size)d" % faces)
        # Triple double quotes
        self.StyleSetSpec(stc.STC_P_TRIPLEDOUBLE, "fore:#7F0000,size:%(size)d" % faces)
        # Class name definition
        self.StyleSetSpec(stc.STC_P_CLASSNAME, "fore:#0000FF,bold,underline,size:%(size)d" % faces)
        # Function or method name definition
        self.StyleSetSpec(stc.STC_P_DEFNAME, "fore:#007F7F,bold,size:%(size)d" % faces)
        # Operators
        self.StyleSetSpec(stc.STC_P_OPERATOR, "bold,size:%(size)d" % faces)
        # Identifiers
        self.StyleSetSpec(stc.STC_P_IDENTIFIER, "fore:#000000,face:%(helv)s,size:%(size)d" % faces)
        # Comment-blocks
        self.StyleSetSpec(stc.STC_P_COMMENTBLOCK, "fore:#7F7F7F,size:%(size)d" % faces)
        # End of line where string is not closed
        self.StyleSetSpec(stc.STC_P_STRINGEOL, "fore:#000000,face:%(mono)s,back:#E0C0E0,eol,size:%(size)d" % faces)

        self.SetCaretForeground("BLUE")


        # register some images for use in the AutoComplete box.
        #self.RegisterImage(1, images.getSmilesBitmap())
        #self.RegisterImage(2, 
        #    wx.ArtProvider.GetBitmap(wx.ART_NEW, size=(16,16)))
        #self.RegisterImage(3, 
        #    wx.ArtProvider.GetBitmap(wx.ART_COPY, size=(16,16)))


    def OnKeyPressed(self, event):
        if self.CallTipActive():
            self.CallTipCancel()
        key = event.GetKeyCode()

        if key == 32 and event.ControlDown():
            pos = self.GetCurrentPos()

            # Tips
            if event.ShiftDown():
                self.CallTipSetBackground("yellow")
                self.CallTipShow(pos, 'lots of of text: blah, blah, blah\n\n'
                                 'show some suff, maybe parameters..\n\n'
                                 'fubar(param1, param2)')
            # Code completion
            else:
                #lst = []
                #for x in range(50000):
                #    lst.append('%05d' % x)
                #st = " ".join(lst)
                #print len(st)
                #self.AutoCompShow(0, st)

                kw = keyword.kwlist[:]
                
                kw.sort()  # Python sorts are case sensitive
                self.AutoCompSetIgnoreCase(False)  # so this needs to match

                # Images are specified with a appended "?type"
                for i in range(len(kw)):
                    if kw[i] in keyword.kwlist:
                        kw[i] = kw[i]# + "?1"

                self.AutoCompShow(0, " ".join(kw))
        else:
            event.Skip()


    def OnUpdateUI(self, evt):
        # check for matching braces
        braceAtCaret = -1
        braceOpposite = -1
        charBefore = None
        caretPos = self.GetCurrentPos()

        if caretPos > 0:
            charBefore = self.GetCharAt(caretPos - 1)
            styleBefore = self.GetStyleAt(caretPos - 1)

        # check before
        if charBefore and chr(charBefore) in "[]{}()" and styleBefore == stc.STC_P_OPERATOR:
            braceAtCaret = caretPos - 1

        # check after
        if braceAtCaret < 0:
            charAfter = self.GetCharAt(caretPos)
            styleAfter = self.GetStyleAt(caretPos)
            
            if charAfter and chr(charAfter) in "[]{}()" and styleAfter == stc.STC_P_OPERATOR:
                braceAtCaret = caretPos

        if braceAtCaret >= 0:
            braceOpposite = self.BraceMatch(braceAtCaret)

        if braceAtCaret != -1  and braceOpposite == -1:
            self.BraceBadLight(braceAtCaret)
        else:
            self.BraceHighlight(braceAtCaret, braceOpposite)
            #pt = self.PointFromPosition(braceOpposite)
            #self.Refresh(True, wxRect(pt.x, pt.y, 5,5))
            #print pt
            #self.Refresh(False)


    def OnMarginClick(self, evt):
        # fold and unfold as needed
        if evt.GetMargin() == 2:
            if evt.GetShift() and evt.GetControl():
                self.FoldAll()
            else:
                lineClicked = self.LineFromPosition(evt.GetPosition())

                if self.GetFoldLevel(lineClicked) & stc.STC_FOLDLEVELHEADERFLAG:
                    if evt.GetShift():
                        self.SetFoldExpanded(lineClicked, True)
                        self.Expand(lineClicked, True, True, 1)
                    elif evt.GetControl():
                        if self.GetFoldExpanded(lineClicked):
                            self.SetFoldExpanded(lineClicked, False)
                            self.Expand(lineClicked, False, True, 0)
                        else:
                            self.SetFoldExpanded(lineClicked, True)
                            self.Expand(lineClicked, True, True, 100)
                    else:
                        self.ToggleFold(lineClicked)


    def FoldAll(self):
        lineCount = self.GetLineCount()
        expanding = True

        # find out if we are folding or unfolding
        for lineNum in range(lineCount):
            if self.GetFoldLevel(lineNum) & stc.STC_FOLDLEVELHEADERFLAG:
                expanding = not self.GetFoldExpanded(lineNum)
                break

        lineNum = 0

        while lineNum < lineCount:
            level = self.GetFoldLevel(lineNum)
            if level & stc.STC_FOLDLEVELHEADERFLAG and \
               (level & stc.STC_FOLDLEVELNUMBERMASK) == stc.STC_FOLDLEVELBASE:

                if expanding:
                    self.SetFoldExpanded(lineNum, True)
                    lineNum = self.Expand(lineNum, True)
                    lineNum = lineNum - 1
                else:
                    lastChild = self.GetLastChild(lineNum, -1)
                    self.SetFoldExpanded(lineNum, False)

                    if lastChild > lineNum:
                        self.HideLines(lineNum+1, lastChild)

            lineNum = lineNum + 1



    def Expand(self, line, doExpand, force=False, visLevels=0, level=-1):
        lastChild = self.GetLastChild(line, level)
        line = line + 1

        while line <= lastChild:
            if force:
                if visLevels > 0:
                    self.ShowLines(line, line)
                else:
                    self.HideLines(line, line)
            else:
                if doExpand:
                    self.ShowLines(line, line)

            if level == -1:
                level = self.GetFoldLevel(line)

            if level & stc.STC_FOLDLEVELHEADERFLAG:
                if force:
                    if visLevels > 1:
                        self.SetFoldExpanded(line, True)
                    else:
                        self.SetFoldExpanded(line, False)

                    line = self.Expand(line, doExpand, force, visLevels-1)

                else:
                    if doExpand and self.GetFoldExpanded(line):
                        line = self.Expand(line, True, force, visLevels-1)
                    else:
                        line = self.Expand(line, False, force, visLevels-1)
            else:
                line = line + 1

        return line


#----------------------------------------------------------------------

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