如何解决如果未选中项目,如何从Qlistidget的QPlaintextEdit中删除确切的文本?
我想在取消选中项目时从Qlistwidget的QPlaintextEdit中删除完全匹配的文本。 它不仅删除了项目,还删除了其他匹配的文本。例如:“ Fname1 Lname1” “ Fname2 Lname2”,“ Fname3 LName3”,“ Fname”,“ Lname1。我选择了所有项目,并且要移动未选中项目“ Fname”的项目。它删除了单独的“ Fname”,也删除了“ Fname1 Lname1”,并将输出显示为“ 1 Lname1”。我只想删除确切的项目(文本)。怎么办? 下面是我的示例代码:
from PyQt5 import QtCore,QtGui,QtWidgets
class Ui_Form(object):
def setupUi(self,Form):
Form.setobjectName("Form")
Form.resize(691,327)
self.listWidget = QtWidgets.QListWidget(Form)
self.listWidget.setGeometry(QtCore.QRect(70,40,256,192))
self.listWidget.setEditTriggers(QtWidgets.QAbstractItemView.NoEditTriggers)
self.listWidget.setobjectName("listWidget")
self.plainTextEdit = QtWidgets.QPlainTextEdit(Form)
self.plainTextEdit.setGeometry(QtCore.QRect(360,261,191))
self.plainTextEdit.setTabChangesFocus(True)
self.plainTextEdit.setReadOnly(True)
self.plainTextEdit.setobjectName("plainTextEdit")
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self,Form):
_translate = QtCore.QCoreApplication.translate
Form.setwindowTitle(_translate("Form","Form"))
class MainWindow(QtWidgets.QWidget,Ui_Form):
def __init__(self):
super().__init__()
self.setupUi(self)
self.lists = {
"Fname1 Lname1": 0,"Fname2 Lname2": 0,"Fname3 LName3": 0,"Fname":0,"lname1":0
}
for i in self.lists.keys():
item = QtWidgets.QListWidgetItem(i)
item.setFlags(item.flags() | QtCore.Qt.ItemIsUserCheckable)
item.setCheckState(QtCore.Qt.Unchecked)
self.listWidget.addItem(item)
def on_listWidget_itemClicked(self,item):
if item.checkState() == QtCore.Qt.Checked and self.lists[item.text()] == 0:
self.plainTextEdit.appendplainText(item.text())
self.lists[item.text()] = 1
elif item.checkState() == QtCore.Qt.Unchecked:
text = self.plainTextEdit.toPlainText()
text = text.replace(item.text(),'')
_list = text.split('\n')
_list = [ i for i in _list if i ]
text = '\n'.join(_list)
self.plainTextEdit.setPlainText(text)
self.lists[item.text()] = 0
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
Form = MainWindow()
Form.show()
sys.exit(app.exec_())
解决方法
尝试一下:
from PyQt5 import QtCore,QtGui,QtWidgets
class Ui_Form(object):
def setupUi(self,Form):
Form.setObjectName("Form")
Form.resize(691,327)
self.listWidget = QtWidgets.QListWidget(Form)
self.listWidget.setGeometry(QtCore.QRect(70,40,256,192))
self.listWidget.setEditTriggers(QtWidgets.QAbstractItemView.NoEditTriggers)
self.listWidget.setObjectName("listWidget")
self.plainTextEdit = QtWidgets.QPlainTextEdit(Form)
self.plainTextEdit.setGeometry(QtCore.QRect(360,261,191))
self.plainTextEdit.setTabChangesFocus(True)
self.plainTextEdit.setReadOnly(True)
self.plainTextEdit.setObjectName("plainTextEdit")
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self,Form):
_translate = QtCore.QCoreApplication.translate
Form.setWindowTitle(_translate("Form","Form"))
class MainWindow(QtWidgets.QWidget,Ui_Form):
def __init__(self):
super().__init__()
self.setupUi(self)
self.lists = {
"Fname1 Lname1": 0,"Fname2 Lname2": 0,"Fname3 LName3": 0,"Fname":0,"lname1":0
}
for i in self.lists.keys():
item = QtWidgets.QListWidgetItem(i)
item.setFlags(item.flags() | QtCore.Qt.ItemIsUserCheckable)
item.setCheckState(QtCore.Qt.Unchecked)
self.listWidget.addItem(item)
def on_listWidget_itemClicked(self,item):
if item.checkState() == QtCore.Qt.Checked and self.lists[item.text()] == 0:
self.plainTextEdit.appendPlainText(item.text())
self.lists[item.text()] = 1
elif item.checkState() == QtCore.Qt.Unchecked:
text = self.plainTextEdit.toPlainText()
# text = text.replace(item.text(),'') # ---
_list = text.split('\n')
# _list = [ i for i in _list if i ] # ---
_list = [ i for i in _list if i != item.text() ] # +++
text = '\n'.join(_list)
self.plainTextEdit.setPlainText(text)
self.lists[item.text()] = 0
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
Form = MainWindow()
Form.show()
sys.exit(app.exec_())
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