PySide tableview delegate test

tableview_delegate.py

from PySide import QtCore, QtGui
from shiboken import wrapInstance
import maya.OpenMayaUI as omui


def maya_main_window():
    main_window_ptr = omui.MQtUtil.mainWindow()
    return wrapInstance(long(main_window_ptr), QtGui.QWidget)
    

class MyDelegate(QtGui.QItemDelegate):
    
    def __init__(self, parent=None):
        super(MyDelegate, self).__init__(parent)
        
    def createEditor(self, parent, option, index):
        
        column = index.column()
        
        if column == 0:
            spinbox = QtGui.QDoubleSpinBox(parent)
            spinbox.setRange(.05,999)
            spinbox.setDecimals(3)
            spinbox.setAlignment(QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter)
            return spinbox
            
        elif column == 1:
            lineedit = QtGui.QLineEdit(parent)
            return lineedit
            
    
               
# the main ui class  
class TableviewTest(QtGui.QWidget):
 
    def __init__(self, parent=None):
 
        super(TableviewTest, self).__init__(parent)
        self.setWindowFlags(QtCore.Qt.Tool)
        
        self.resize(300, 350)
        self.setWindowTitle("Tableview")
                
        self.vertical_layout = QtGui.QVBoxLayout()
        self.setLayout(self.vertical_layout)
        
        # tableview  
        self.tableview = QtGui.QTableView()
        self.tableview.horizontalHeader().setResizeMode(QtGui.QHeaderView.Stretch)
        self.vertical_layout.addWidget(self.tableview)
        
        self.tableview.setItemDelegate(MyDelegate(self.tableview))
        
        # model      
        self.model = QtGui.QStandardItemModel()
        self.model.setHorizontalHeaderLabels(['float', 'string'])
        self.tableview.setModel(self.model)
        self.model.dataChanged.connect(self.model_changed)
        
        for row in range(5):
            
            item = QtGui.QStandardItem()
            item.setData(1.0, QtCore.Qt.EditRole)
            self.model.setItem(row, 0, item);            
    
    def model_changed(self, top_left, bottom_right):
        
        print('model changed')
        
        val = self.model.data(top_left)
        selection_model = self.tableview.selectionModel()
        column = top_left.column()
        
        # returns QModelIndex
        #selected_rows = selection_model.selectedRows()
        selected_indexes = selection_model.selectedIndexes()
        
        self.model.blockSignals(True)
        
        for index in selected_indexes:
            # only change the items with the same col as the one edited
            if index.column() != column:
                continue
                
            self.model.setData(index, val)

        self.model.blockSignals(False)
        
        #self.tableview.viewport().update() 


try:
    win.close()
    
except NameError as e:
    print(e)
    
win = TableviewTest(parent=maya_main_window())
win.move(100, 210)
win.show()