controls/CustomGrid.py
author Sergey Surkov <surkovsv93@gmail.com>
Tue, 18 Oct 2016 17:44:08 +0300
changeset 1544 2969c2123105
parent 1197 eb118ed5cbe0
child 1568 ad7c7df6cbeb
permissions -rw-r--r--
Fix bug with two or more wires connected to one input. Now only one wire can be connected to one input, except BOOLean signals in LD and SFC. If user trying to connect wire with already connected input, wire highlight will become red.
Signed-off-by: Andrey Skvortsov <andrej.skvortzov@gmail.com>
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor
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#based on the plcopen standard. 
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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 library is free software; you can redistribute it and/or
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#modify it under the terms of the GNU General Public
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#License as published by the Free Software Foundation; either
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#version 2.1 of the License, or (at your option) any later version.
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#
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#This library 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 GNU
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#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
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#License along with this library; if not, write to the Free Software
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#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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import wx
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import wx.grid
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class CustomGrid(wx.grid.Grid):
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    def __init__(self, *args, **kwargs):
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        wx.grid.Grid.__init__(self, *args, **kwargs)
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        self.Editable = True
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        self.AddButton = None
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        self.DeleteButton = None
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        self.UpButton = None
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        self.DownButton = None
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        self.SetFont(wx.Font(12, 77, wx.NORMAL, wx.NORMAL, False, 'Sans'))
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        self.SetLabelFont(wx.Font(10, 77, wx.NORMAL, wx.NORMAL, False, 'Sans'))
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        self.SetSelectionBackground(wx.WHITE)
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        self.SetSelectionForeground(wx.BLACK)
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        self.DisableDragRowSize()
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        self.Bind(wx.grid.EVT_GRID_SELECT_CELL, self.OnSelectCell)
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        self.Bind(wx.grid.EVT_GRID_EDITOR_HIDDEN, self.OnEditorHidden)
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        self.Bind(wx.EVT_KEY_DOWN, self.OnKeyDown)
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    def SetFocus(self):
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        if self:
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            wx.grid.Grid.SetFocus(self)
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    def SetDefaultValue(self, default_value):
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        self.DefaultValue = default_value
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    def SetEditable(self, editable=True):
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        self.Editable = editable
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        self.RefreshButtons()
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    def SetButtons(self, buttons):
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        for name in ["Add", "Delete", "Up", "Down"]:
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            button = buttons.get(name, None)
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            setattr(self, "%sButton" % name, button)
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            if button is not None:
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                button.Bind(wx.EVT_BUTTON, getattr(self, "On%sButton" % name))
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    def RefreshButtons(self):
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        if self:
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            rows = self.Table.GetNumberRows()
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            row = self.GetGridCursorRow()
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            if self.AddButton is not None:
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                self.AddButton.Enable(self.Editable)
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            if self.DeleteButton is not None:
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                self.DeleteButton.Enable(self.Editable and rows > 0)
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            if self.UpButton is not None:
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                self.UpButton.Enable(self.Editable and row > 0)
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            if self.DownButton is not None:
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                self.DownButton.Enable(self.Editable and 0 <= row < rows - 1)
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    def CloseEditControl(self):
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        row, col = self.GetGridCursorRow(), self.GetGridCursorCol()
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        if row != -1 and col != -1:
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            self.SetGridCursor(row, col)
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    def AddRow(self):
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        self.CloseEditControl()
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        new_row = self.GetGridCursorRow() + 1
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        col = max(self.GetGridCursorCol(), 0)
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        if getattr(self, "_AddRow", None) is not None:
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            new_row = self._AddRow(new_row)
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        else:
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            self.Table.InsertRow(new_row, self.DefaultValue.copy())
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            self.Table.ResetView(self)
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        if new_row is not None:
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            self.SetSelectedCell(new_row, col)
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    def DeleteRow(self):
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        self.CloseEditControl()
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        row = self.GetGridCursorRow()
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        if row >= 0:
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            col = self.GetGridCursorCol()
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            if getattr(self, "_DeleteRow", None) is not None:
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                self._DeleteRow(row)
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            else:
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                self.Table.RemoveRow(row)
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                self.Table.ResetView(self)
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            if self.Table.GetNumberRows() > 0:
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                self.SetSelectedCell(min(row, self.Table.GetNumberRows() - 1), col)
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    def MoveRow(self, row, move):
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        self.CloseEditControl()
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        col = self.GetGridCursorCol()
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        if getattr(self, "_MoveRow", None) is not None:
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            new_row = self._MoveRow(row, move)
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        else:
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            new_row = self.Table.MoveRow(row, move)
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            if new_row != row:
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                self.Table.ResetView(self)
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        if new_row != row:
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            self.SetSelectedCell(new_row, col)
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    def SetSelectedCell(self, row, col):
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        self.SetGridCursor(row, col)
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        self.MakeCellVisible(row, col)
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        self.RefreshButtons()
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    def OnAddButton(self, event):
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        self.AddRow()
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        self.SetFocus()
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        event.Skip()
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    def OnDeleteButton(self, event):
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        self.DeleteRow()
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        self.SetFocus()
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        event.Skip()
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    def OnUpButton(self, event):
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        self.MoveRow(self.GetGridCursorRow(), -1)
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        self.SetFocus()
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        event.Skip()
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    def OnDownButton(self, event):
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        self.MoveRow(self.GetGridCursorRow(), 1)
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        self.SetFocus()
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        event.Skip()
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    def OnSelectCell(self, event):
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        wx.CallAfter(self.RefreshButtons)
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        event.Skip()
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    def OnEditorHidden(self, event):
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        wx.CallAfter(self.SetFocus)
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        event.Skip()
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    def OnKeyDown(self, event):
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        key_handled = False
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        keycode = event.GetKeyCode()
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        if keycode == wx.WXK_TAB:
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            row = self.GetGridCursorRow()
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            col = self.GetGridCursorCol()
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            if event.ShiftDown():
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                if row < 0 or col == 0:
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                    self.Navigate(wx.NavigationKeyEvent.IsBackward)
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                    key_handled = True
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            elif row < 0 or col == self.Table.GetNumberCols() - 1:
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                self.Navigate(wx.NavigationKeyEvent.IsForward)
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                key_handled = True
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        elif keycode in (wx.WXK_ADD, wx.WXK_NUMPAD_ADD) and self.Editable:
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            self.AddRow()
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            key_handled = True
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        elif keycode in (wx.WXK_DELETE, wx.WXK_NUMPAD_DELETE) and self.Editable:
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            self.DeleteRow()
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            key_handled = True
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        elif keycode == wx.WXK_UP and event.ShiftDown() and self.Editable:
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            self.MoveRow(self.GetGridCursorRow(), -1)
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            key_handled = True
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        elif keycode == wx.WXK_DOWN and event.ShiftDown() and self.Editable:
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            self.MoveRow(self.GetGridCursorRow(), 1)
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            key_handled = True
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        if not key_handled:
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            event.Skip()