author | Edouard Tisserant |
Fri, 12 Jul 2019 11:53:04 +0200 | |
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parent 2431 | 6923074540dd |
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permissions | -rw-r--r-- |
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#!/usr/bin/env python |
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# -*- coding: utf-8 -*- |
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# This file is part of Beremiz, a Integrated Development Environment for |
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# programming IEC 61131-3 automates supporting plcopen standard and CanFestival. |
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# |
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# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD |
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# |
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# See COPYING file for copyrights details. |
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# |
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# This program is free software; you can redistribute it and/or |
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# modify it under the terms of the GNU General Public License |
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# as published by the Free Software Foundation; either version 2 |
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# of the License, or (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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from __future__ import absolute_import |
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from six.moves import cPickle |
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import wx |
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MAX_ITEM_COUNT = 10 |
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MAX_ITEM_SHOWN = 6 |
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if wx.Platform == '__WXMSW__': |
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LISTBOX_BORDER_HEIGHT = 2 |
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LISTBOX_INTERVAL_HEIGHT = 0 |
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else: |
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LISTBOX_BORDER_HEIGHT = 4 |
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LISTBOX_INTERVAL_HEIGHT = 6 |
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class PopupWithListbox(wx.PopupWindow): |
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def __init__(self, parent, choices=None): |
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wx.PopupWindow.__init__(self, parent, wx.BORDER_SIMPLE) |
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self.ListBox = wx.ListBox(self, -1, style=wx.LB_HSCROLL | wx.LB_SINGLE | wx.LB_SORT) |
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choices = [] if choices is None else choices |
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self.SetChoices(choices) |
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self.ListBox.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown) |
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self.ListBox.Bind(wx.EVT_MOTION, self.OnMotion) |
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def SetChoices(self, choices): |
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max_text_width = 0 |
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max_text_height = 0 |
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self.ListBox.Clear() |
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for choice in choices: |
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self.ListBox.Append(choice) |
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w, h = self.ListBox.GetTextExtent(choice) |
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max_text_width = max(max_text_width, w) |
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max_text_height = max(max_text_height, h) |
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itemcount = min(len(choices), MAX_ITEM_SHOWN) |
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width = self.Parent.GetSize()[0] |
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height = \ |
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max_text_height * itemcount + \ |
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LISTBOX_INTERVAL_HEIGHT * max(0, itemcount - 1) + \ |
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2 * LISTBOX_BORDER_HEIGHT |
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if max_text_width + 10 > width: |
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height += 15 |
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size = wx.Size(width, height) |
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if wx.Platform == '__WXMSW__': |
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size.width -= 2 |
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self.ListBox.SetSize(size) |
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self.SetClientSize(size) |
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def MoveSelection(self, direction): |
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selected = self.ListBox.GetSelection() |
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if selected == wx.NOT_FOUND: |
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if direction >= 0: |
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selected = 0 |
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else: |
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selected = self.ListBox.GetCount() - 1 |
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else: |
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selected = (selected + direction) % (self.ListBox.GetCount() + 1) |
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if selected == self.ListBox.GetCount(): |
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selected = wx.NOT_FOUND |
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self.ListBox.SetSelection(selected) |
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def GetSelection(self): |
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return self.ListBox.GetStringSelection() |
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def OnLeftDown(self, event): |
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selected = self.ListBox.HitTest(wx.Point(event.GetX(), event.GetY())) |
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parent_size = self.Parent.GetSize() |
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parent_rect = wx.Rect(0, -parent_size[1], parent_size[0], parent_size[1]) |
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if selected != wx.NOT_FOUND: |
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wx.CallAfter(self.Parent.SetValueFromSelected, self.ListBox.GetString(selected)) |
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elif parent_rect.InsideXY(event.GetX(), event.GetY()): |
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result, x, y = self.Parent.HitTest(wx.Point(event.GetX(), event.GetY() + parent_size[1])) |
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if result != wx.TE_HT_UNKNOWN: |
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self.Parent.SetInsertionPoint(self.Parent.XYToPosition(x, y)) |
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else: |
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wx.CallAfter(self.Parent.DismissListBox) |
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event.Skip() |
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def OnMotion(self, event): |
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self.ListBox.SetSelection( |
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self.ListBox.HitTest(wx.Point(event.GetX(), event.GetY()))) |
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event.Skip() |
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class TextCtrlAutoComplete(wx.TextCtrl): |
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def __init__(self, parent, choices=None, dropDownClick=True, |
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element_path=None, **therest): |
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""" |
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Constructor works just like wx.TextCtrl except you can pass in a |
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list of choices. You can also change the choice list at any time |
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by calling setChoices. |
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""" |
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therest['style'] = wx.TE_PROCESS_ENTER | therest.get('style', 0) |
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wx.TextCtrl.__init__(self, parent, **therest) |
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# Some variables |
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self._dropDownClick = dropDownClick |
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self._lastinsertionpoint = None |
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self._hasfocus = False |
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self._screenheight = wx.SystemSettings.GetMetric(wx.SYS_SCREEN_Y) |
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self.element_path = element_path |
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self.listbox = None |
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self.SetChoices(choices) |
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# gp = self |
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# while ( gp != None ) : |
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# gp.Bind ( wx.EVT_MOVE , self.onControlChanged, gp ) |
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# gp.Bind ( wx.EVT_SIZE , self.onControlChanged, gp ) |
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# gp = gp.GetParent() |
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self.Bind(wx.EVT_KILL_FOCUS, self.OnControlChanged) |
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self.Bind(wx.EVT_TEXT_ENTER, self.OnControlChanged) |
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self.Bind(wx.EVT_TEXT, self.OnEnteredText) |
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self.Bind(wx.EVT_KEY_DOWN, self.OnKeyDown) |
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# If need drop down on left click |
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if dropDownClick: |
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self.Bind(wx.EVT_LEFT_DOWN, self.OnClickToggleDown) |
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self.Bind(wx.EVT_LEFT_UP, self.OnClickToggleUp) |
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def ChangeValue(self, value): |
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wx.TextCtrl.ChangeValue(self, value) |
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self.RefreshListBoxChoices() |
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def OnEnteredText(self, event): |
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wx.CallAfter(self.RefreshListBoxChoices) |
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event.Skip() |
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def OnKeyDown(self, event): |
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""" Do some work when the user press on the keys: |
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up and down: move the cursor |
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""" |
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keycode = event.GetKeyCode() |
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if keycode in [wx.WXK_DOWN, wx.WXK_UP]: |
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self.PopupListBox() |
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if keycode == wx.WXK_DOWN: |
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self.listbox.MoveSelection(1) |
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else: |
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self.listbox.MoveSelection(-1) |
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elif keycode in [wx.WXK_LEFT, wx.WXK_RIGHT, wx.WXK_RETURN] and self.listbox is not None: |
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selected = self.listbox.GetSelection() |
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if selected != "": |
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self.SetValueFromSelected(selected) |
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else: |
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event.Skip() |
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elif event.GetKeyCode() == wx.WXK_ESCAPE: |
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self.DismissListBox() |
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else: |
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event.Skip() |
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def OnClickToggleDown(self, event): |
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self._lastinsertionpoint = self.GetInsertionPoint() |
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event.Skip() |
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def OnClickToggleUp(self, event): |
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if not self._hasfocus: |
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self._hasfocus = True |
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elif self.GetInsertionPoint() == self._lastinsertionpoint: |
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wx.CallAfter(self.PopupListBox) |
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self._lastinsertionpoint = None |
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event.Skip() |
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def OnControlChanged(self, event): |
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res = self.GetValue() |
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config = wx.ConfigBase.Get() |
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listentries = cPickle.loads(str(config.Read(self.element_path, cPickle.dumps([])))) |
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if res and res not in listentries: |
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listentries = (listentries + [res])[-MAX_ITEM_COUNT:] |
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config.Write(self.element_path, cPickle.dumps(listentries)) |
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config.Flush() |
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self.SetChoices(listentries) |
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self.DismissListBox() |
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self._hasfocus = False |
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event.Skip() |
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def SetChoices(self, choices): |
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self._choices = choices |
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self.RefreshListBoxChoices() |
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def GetChoices(self): |
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return self._choices |
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def SetValueFromSelected(self, selected): |
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""" |
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Sets the wx.TextCtrl value from the selected wx.ListCtrl item. |
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Will do nothing if no item is selected in the wx.ListCtrl. |
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""" |
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if selected != "": |
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self.SetValue(selected) |
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self.DismissListBox() |
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def RefreshListBoxChoices(self): |
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if self.listbox is not None: |
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text = self.GetValue() |
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choices = [choice for choice in self._choices if choice.startswith(text)] |
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self.listbox.SetChoices(choices) |
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def PopupListBox(self): |
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if self.listbox is None: |
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self.listbox = PopupWithListbox(self) |
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# Show the popup right below or above the button |
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# depending on available screen space... |
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pos = self.ClientToScreen((0, 0)) |
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sz = self.GetSize() |
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if wx.Platform == '__WXMSW__': |
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pos.x -= 2 |
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pos.y -= 2 |
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self.listbox.Position(pos, (0, sz[1])) |
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self.RefreshListBoxChoices() |
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self.listbox.Show() |
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def DismissListBox(self): |
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if self.listbox is not None: |
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if self.listbox.ListBox.HasCapture(): |
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self.listbox.ListBox.ReleaseMouse() |
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self.listbox.Destroy() |
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self.listbox = None |