autocomplete
walterigo at yahoo.com
walterigo at yahoo.com
Sat Jun 10 16:39:47 EDT 2006
hello.
I have been working all too hard trying to figure out how to get
TextCtrlAutoComplete.py to start another word after it finishes the
last word. I want it to start the autocomplete process all over again
after it finishes the autocomplete process. I have striped down the
program to a smaller version than the orginal. it now works in a
multiline wx.textctrl box. belive that the program only needs one or
two lines to complete the taks and start all over again.
here is a copy of the code
'''
wxPython Custom Widget Collection 20060207
Written By: Edward Flick ()
Michele Petrazzo (michele -=dot=- petrazzo -=at=- unipex
-=dot=- it)
Will Sadkin (wsadkin-=at=- nameconnector -=dot=- com)
Copyright 2006 (c) CDF Inc. ( http://www.cdf-imaging.com )
Contributed to the wxPython project under the wxPython project's
license.
'''
import wx
import sys
import wx.lib.mixins.listctrl as listmix
class myListCtrl(wx.ListCtrl, listmix.ListCtrlAutoWidthMixin):
def __init__(self,
parent,
ID=-1,
pos=wx.DefaultPosition,
size=wx.DefaultSize,
style=0):
wx.ListCtrl.__init__(self, parent, ID, pos, size, style)
listmix.ListCtrlAutoWidthMixin.__init__(self)
class TextCtrlAutoComplete (wx.TextCtrl, listmix.ColumnSorterMixin ):
def __init__ ( self, parent, choices = None,
showHead=False, dropDownClick=True,
colFetch=-1, colSearch=0, hideOnNoMatch=True,
selectCallback=None, entryCallback=None,
matchFunction=None,
**therest) :
'''
Constructor works just like wx.TextCtrl except you can pass in
a
list of choices. You can also change the choice list at any
time
by calling setChoices.
'''
if therest.has_key('style'):
therest['style']=wx.TE_PROCESS_ENTER | therest['style']
else:
therest['style']=wx.TE_PROCESS_ENTER
wx.TextCtrl.__init__(self,parent,-1,'',size=(500,500),style=wx.TE_MULTILINE)
#wx.TextCtrl.__init__(self, parent, **therest )
self._hideOnNoMatch = hideOnNoMatch
self._selectCallback = selectCallback
self._matchFunction = matchFunction
self._screenheight = wx.SystemSettings.GetMetric(
wx.SYS_SCREEN_Y )
#sort variable needed by listmix
self.itemDataMap = dict()
#widgets
self.dropdown = wx.PopupWindow( self )
#Control the style
flags = wx.LC_REPORT | wx.LC_SINGLE_SEL | wx.LC_SORT_ASCENDING
if not (showHead) :
flags = flags | wx.LC_NO_HEADER
#Create the list and bind the events
self.dropdownlistbox = myListCtrl( self.dropdown, style=flags,
pos=wx.Point( 0, 0) )
gp = self
while ( gp != None ) :
gp = gp.GetParent()
self.Bind( wx.EVT_TEXT , self.onEnteredText, self )
self.Bind( wx.EVT_KEY_DOWN , self.onKeyDown, self )
self.dropdownlistbox.Bind(wx.EVT_LEFT_DCLICK,
self.onListDClick)
def onListDClick(self, evt):
self._setValueFromSelected()
def onEnteredText(self, event):
text = event.GetString()
#print('onEnterdText text: ',text)
if self._entryCallback:
self._entryCallback()
if not text:
# control is empty; hide dropdown if shown:
if self.dropdown.IsShown():
self._showDropDown(False)
event.Skip()
return
found = False
choices = self._choices
for numCh, choice in enumerate(choices):
if self._matchFunction and self._matchFunction(text,
choice):
found = True
elif choice.lower().startswith(text.lower()) :
found = True
if found:
self._showDropDown(True)
item = self.dropdownlistbox.GetItem(numCh)
toSel = item.GetId()
self.dropdownlistbox.Select(toSel)
break
if not found:
self.dropdownlistbox.Select(self.dropdownlistbox.GetFirstSelected(),
False)
if self._hideOnNoMatch:
self._showDropDown(False)
self._listItemVisible()
event.Skip ()
def onKeyDown ( self, event ) :
""" Do some work when the user press on the keys:
up and down: move the cursor
left and right: move the search
"""
skip = True
sel = self.dropdownlistbox.GetFirstSelected()
visible = self.dropdown.IsShown()
KC = event.GetKeyCode()
if KC == wx.WXK_DOWN :
if sel < (self.dropdownlistbox.GetItemCount () - 1) :
self.dropdownlistbox.Select ( sel+1 )
self._listItemVisible()
self._showDropDown ()
skip = False
elif KC == wx.WXK_UP :
if sel > 0 :
self.dropdownlistbox.Select ( sel - 1 )
self._listItemVisible()
self._showDropDown ()
skip = False
if visible :
if event.GetKeyCode() == wx.WXK_RETURN :
self._setValueFromSelected()
skip = False
if event.GetKeyCode() == wx.WXK_ESCAPE :
self._showDropDown( False )
skip = False
if skip :
event.Skip()
def onListItemSelected (self, event):
self._setValueFromSelected()
event.Skip()
def onClickToggleDown(self, event):
self._lastinsertionpoint = self.GetInsertionPoint()
event.Skip ()
def onClickToggleUp ( self, event ) :
if ( self.GetInsertionPoint() == self._lastinsertionpoint ) :
self._showDropDown ( not self.dropdown.IsShown() )
event.Skip ()
# -- Interfaces methods
def SetChoices(self, choices):
#Sets the choices available in the popup wx.ListBox.
#The items will be sorted case insensitively.
self._choices = choices
flags = wx.LC_REPORT | wx.LC_SINGLE_SEL | wx.LC_SORT_ASCENDING
| wx.LC_NO_HEADER
self._updateDataList(self._choices)
self.dropdownlistbox.InsertColumn(0, "")
for num, colVal in enumerate(self._choices):
index =
self.dropdownlistbox.InsertImageStringItem(sys.maxint, colVal, -1)
self.dropdownlistbox.SetStringItem(index, 0, colVal)
self.dropdownlistbox.SetItemData(index, num)
self._setListSize()
# there is only one choice for both search and fetch if setting
a single column:
self._colSearch = 0
self._colFetch = -1
def SetSelectCallback(self, cb=None):
self._selectCallback = cb
def SetEntryCallback(self, cb=None):
self._entryCallback = cb
#-- Internal methods
def _setValueFromSelected( self ) :
'''
Sets the wx.TextCtrl value from the selected wx.ListCtrl item.
Will do nothing if no item is selected in the wx.ListCtrl.
'''
sel = self.dropdownlistbox.GetFirstSelected()
if sel > -1:
if self._colFetch != -1: col = self._colFetch
else: col = self._colSearch
itemtext = self.dropdownlistbox.GetItem(sel, col).GetText()
if self._selectCallback:
dd = self.dropdownlistbox
values = [dd.GetItem(sel, x).GetText()
for x in xrange(dd.GetColumnCount())]
self._selectCallback( values )
self.SetValue (itemtext)
self.SetInsertionPointEnd ()
self.SetSelection ( -1, -1 )
self._showDropDown ( False )
def _showDropDown ( self, show = True ) :
'''
Either display the drop down list (show = True) or hide it
(show = False).
'''
if show :
size = self.dropdown.GetSize()
width, height = self . GetSizeTuple()
x, y = self . ClientToScreenXY ( wx.CentreX+6, wx.CentreY+6
)
if size.GetWidth() != width :
size.SetWidth(width)
self.dropdown.SetSize(size)
self.dropdownlistbox.SetSize(self.dropdown.GetClientSize())
if (y + size.GetHeight()) < self._screenheight :
self.dropdown . SetPosition ( wx.Point(x, y) )
else:
self.dropdown . SetPosition ( wx.Point(x, y - height -
size.GetHeight()) )
self.dropdown.Show ( show )
def _listItemVisible( self ) :
'''
Moves the selected item to the top of the list ensuring it is
always visible.
'''
toSel = self.dropdownlistbox.GetFirstSelected ()
if toSel == -1: return
self.dropdownlistbox.EnsureVisible( toSel )
def _updateDataList(self, choices):
#delete, if need, all the previous data
if self.dropdownlistbox.GetColumnCount() != 0:
self.dropdownlistbox.DeleteAllColumns()
self.dropdownlistbox.DeleteAllItems()
#and update the dict
if choices:
for numVal, data in enumerate(choices):
self.itemDataMap[numVal] = data
#print("data is %s",data)
else:
numVal = 0
self.SetColumnCount(numVal)
def _setListSize(self):
choices = self._choices
longest = 0
for choice in choices :
longest = max(len(choice), longest)
#longest += 3
itemcount = min( len( choices ) , 7 ) + .5
charheight = self.dropdownlistbox.GetCharHeight()
charwidth = self.dropdownlistbox.GetCharWidth()
self.popupsize = wx.Size( charwidth*longest,
charheight*itemcount )
self.dropdownlistbox.SetSize ( self.popupsize )
self.dropdown.SetClientSize( self.popupsize )
class test:
def __init__(self):
args = dict()
args["selectCallback"] = self.selectCallback
self.dynamic_choices = [
'hello world', 'abandon', 'acorn', 'acute',
'adore',
'aegis', 'ascertain', 'asteroid',
'beautiful', 'bold', 'classic',
'daring', 'dazzling', 'debonair', 'definitive',
'effective', 'elegant',
'http://python.org', 'http://www.google.com',
'fabulous', 'fantastic', 'friendly',
'forgiving', 'feature',
'sage', 'scarlet', 'scenic', 'seaside',
'showpiece', 'spiffy',
'www.wxPython.org', 'www.osafoundation.org'
]
app = wx.PySimpleApp()
frm = wx.Frame(None,-1,"Test",
style=wx.CLEAR
|wx.DEFAULT_FRAME_STYLE
)
panel = wx.Panel(frm)
self._ctrl = TextCtrlAutoComplete(panel, **args)
self.onBtDynamicChoices(self.onBtDynamicChoices)
frm.Show()
app.MainLoop()
def onBtDynamicChoices(self, event):
self._ctrl.SetChoices(self.dynamic_choices)
self._ctrl.SetEntryCallback(self.setDynamicChoices)
def match(self, text, choice):
t = text.lower()
c = choice.lower()
#print('The Value is %S',choice)
return c.startswith(t)
def setDynamicChoices(self):
if wx.EVT_KEY_DOWN == ' ': print "Space bar pressed"
text = self._ctrl.GetValue().lower()
choices = [choice for choice in self.dynamic_choices if
self.match(text, choice)]
self._ctrl.SetChoices(choices)
#print('The Value is %S',text)
def selectCallback(self, values):
""" Simply function that receive the row values when the
user select an item
"""
print "Select Callback called...:", values
self.wordCheck(values)
def wordCheck(self,values):
pass #print"Word to check:",values
if __name__ == "__main__":
test()
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