test/protected_test.lua

   1 require "qtcore"
   2 require "qtgui"
   3
   4 A = QApplication(1, {'Protected test'})
   5
   6 -- We will implement our custom model
   7 M = QAbstractListModel()
   8
   9 -- stored in the environment table of the userdata
  10 M.luaData = {'Hello', 'World'}
  11
  12 -- these are implemented virtual methods
  13 function M:rowCount()
  14         return #self.luaData
  15 end
  16
  17 local empty = QVariant()
  18 function M:data(index, role)
  19         if role == Qt.ItemDataRole.DisplayRole then
  20                 local row = index:row()
  21                 return QVariant(self.luaData[row + 1])
  22         end
  23         return empty
  24 end
  25
  26 -- this is a custom helper function
  27 function M:addAnotherString(str)
  28         table.insert(self.luaData, str)
  29         local row = #self.luaData - 1
  30         local index = self:createIndex(row, 0, 0)
  31         self:dataChanged(index, index)
  32 end
  33
  34 -- some simple layout - list and a button
  35 MW = QWidget()
  36
  37 W = QListView()
  38 W:setModel(M)
  39
  40 B = QPushButton('Add Lua data')
  41 local counter = 1
  42 B:connect('2clicked()', function()
  43         M:addAnotherString('Added text ' .. counter)
  44         counter = counter + 1
  45 end)
  46
  47 L = QVBoxLayout()
  48 L:addWidget(W)
  49 L:addWidget(B)
  50 MW:setLayout(L)
  51
  52 MW:show()
  53 A.exec()