如何使用 QPlainTextEdit 编辑器结束编辑会话？

Question

这是一个 MRE：

from PyQt5.QtCore import QRect, Qt, QAbstractTableModel
from PyQt5.QtWidgets import QApplication, QMainWindow, QTableView, QWidget, QVBoxLayout, QStyledItemDelegate, QPlainTextEdit, QShortcut
import sys, types
from PyQt5.QtGui import QFont

class HistoryTableViewDelegate( QStyledItemDelegate ):
    def __init__( self, history_table_view ):
        super().__init__( history_table_view )
    
    def createEditor(self, parent, option, index):
        editor = QPlainTextEdit( parent )
        editor.setSizeAdjustPolicy( QPlainTextEdit.SizeAdjustPolicy.AdjustToContents )
        self.model = index.model()
        column = index.column()
        row = index.row()
        parent.parent().verticalHeader().resizeSection( row, 150 )
        parent_font = QFont( self.parent().font() )
        parent_font.setPointSize( self.parent().font().pointSize() )
        editor.setFont( parent_font )
        def end_edit():
            print( f'end edit...')
            self.setModelData( editor, self.model, index )
            # how to end the edit session programmatically at this point?
            # self.destroyEditor( editor, index ) 
            
        end_edit_shortcut = QShortcut(  'Alt+E', editor, context = Qt.ShortcutContext.WidgetShortcut )
        end_edit_shortcut.activated.connect( end_edit )
        return editor
    
    def setEditorData(self, editor, index ):
        # NB superclass method sets the editor's text to empty string...
        self.original_text = index.model().data( index, Qt.DisplayRole )
        editor.insertPlainText( str( self.original_text ) )     
        
class HistoryTableModel( QAbstractTableModel ):
    def __init__( self ):
        super(HistoryTableModel, self).__init__()
        data = [
              [4, 9, 2],
              [1, 0, 0],
              [3, 5, 0],
        ]
        self._data = data

    def data(self, index, role):
        if role == Qt.DisplayRole:
            return self._data[index.row()][index.column()]

    def rowCount(self, index):
        return len(self._data)

    def columnCount(self, index):
        return len(self._data[0])
    
    def flags(self, index):
        return Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsEditable
    
    def setData(self, index, value, role ):
        if role == Qt.EditRole:
            self._data[ index.row() ][ index.column() ] = value  
        return True  

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.resize(600, 700 )
        self.centralwidget = QWidget(MainWindow)
        self.verticalLayoutWidget = QWidget(self.centralwidget)
        self.verticalLayoutWidget.setGeometry( QRect(20, 20, 500, 500))
        self.verticalLayout = QVBoxLayout(self.verticalLayoutWidget)
        self.comps = []
        self.table_view = QTableView(self.verticalLayoutWidget)
        self.comps.append( self.table_view )
        self.table_view.setGeometry(QRect(20, 20, 200, 200))
        self.verticalLayout.addWidget(self.table_view)
        self.table_view.setModel( HistoryTableModel() )
        self.table_view.setTabKeyNavigation(False)
        self.table_view.setItemDelegate( HistoryTableViewDelegate( self.table_view ))
        MainWindow.setCentralWidget(self.centralwidget)

class MainWindow(QMainWindow):
    def __init__(self):
        super(MainWindow, self).__init__()
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)

app = QApplication(sys.argv)
application = MainWindow()
application.show()
sys.exit(app.exec())

我想要一个多行编辑器，所以我想我已经明白要走的路是 QPlainTextEdit。尽管在上述情况下，按 Alt-E 将数据提交给模型，但它实际上并没有结束会话。例如，如果您用鼠标单击另一个单元格，您可以看到编辑后的多行数据保留在编辑后的单元格中，这样做也会以某种方式结束编辑会话。

如何以编程方式结束会话？

NB 在按 Alt-E 后按 Escape 是一种方法（两次击键）...但我基本上想用 QLineEdit 编辑器按 Enter 做任何编程的事情。

Answer 1

知道了...

def end_edit():
    self.setModelData( editor, self.model, index )
    self.closeEditor.emit( editor )

如何使用 QPlainTextEdit 编辑器结束编辑会话？

How to end an edit session with QPlainTextEdit editor?

python

edit

qtableview

pyqt5