PyQt - 多次使用 QLineEdit 的自动完成器 [英] PyQt - Auto Completer with QLineEdit multiple times

问题描述

我希望有可能在我的 QLineEdit 中多次使用自动完成器，我找到了使用 QTextEdit 的示例，但我找不到 QLineEdit.这是我使用的一段代码(非常简单):

I want to have the possibility to use multiple times the auto completer in my QLineEdit, I found example using QTextEdit but I can't find for QLineEdit. here is a piece of code I use (very simple one) :

from PyQt5.QtGui import * 
from PyQt5.QtCore import * 
from PyQt5.QtWidgets import *
import sys

def main():    
    app     = QApplication(sys.argv)
    edit    = QLineEdit()
    strList = ["Germany", "Spain", "France", "Norway"]
    completer = QCompleter(strList,edit)

    edit.setCompleter(completer)
    edit.show()

    sys.exit(app.exec_())

if __name__ == '__main__':
    main()

例如，如果我添加逗号，我希望完成者再次开始预测"同一 QLineEdit 中的单词.谢谢.

For example, I want the completer to "start predicting" again the words in the same QLineEdit if I add a comma. Thanks.

推荐答案

我找到了可以帮助他人的答案，我为 Completer 创建了一个类:

I've found the answer if it can help others, I created a class for Completer :

class Completer(QtWidgets.QCompleter):

    def __init__(self, parent=None):
        super(Completer, self).__init__(parent)

        self.setCaseSensitivity(Qt.CaseInsensitive)
        self.setCompletionMode(QtWidgets.QCompleter.PopupCompletion)
        self.setWrapAround(False)

    # Add texts instead of replace
    def pathFromIndex(self, index):
        path = QtWidgets.QCompleter.pathFromIndex(self, index)

        lst = str(self.widget().text()).split(',')

        if len(lst) > 1:
            path = '%s, %s' % (','.join(lst[:-1]), path)

        return path

    # Add operator to separate between texts
    def splitPath(self, path):
        path = str(path.split(',')[-1]).lstrip(' ')
        return [path]

我在 QLineEdit 的类中使用它，例如:

And I use it within a class for QLineEdit like :

class TextEdit(QtWidgets.QLineEdit):

    def __init__(self, parent=None):
        super(TextEdit, self).__init__(parent)

        self.setPlaceholderText("example : ")
        self._completer = Completer(self)
        self.setCompleter(self._completer)

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