class CompleteLineEdit(QLineEdit):
def __init__(self, words):
super(CompleteLineEdit, self).__init__(None)
self.words = words # QStringList 整个完成列表的单词
self.listView = QListView(self)
self.model = QStringListModel(self)
self.listView.setWindowFlags(Qt.ToolTip)
self.connect(self, SIGNAL("textChanged(const QString &)"),
self, SLOT("setCompleter(const QString &)"))
self.connect(self.listView, SIGNAL("clicked(const QModelIndex &)"),
self, SLOT("completeText(const QModelIndex &)"))
def focusOutEvent(self, focus_event):
# self.listView.hide()
pass
@pyqtSlot("QKeyEvent")
def keyPressEvent(self, e):
if not self.listView.isHidden():
key = e.key()
count = self.listView.model().rowCount()
currentIndex = self.listView.currentIndex()
if Qt.Key_Down == key:
# 按向下方向键时，移动光标选中下一个完成列表中的项
row = currentIndex.row() + 1
if (row >= count):
row = 0
index = self.listView.model().index(row, 0)
self.listView.setCurrentIndex(index)
elif Qt.Key_Up == key:
# 按向下方向键时，移动光标选中上一个完成列表中的项
row = currentIndex.row() - 1
if (row < 0):
row = count - 1
index = self.listView.model().index(row, 0)
self.listView.setCurrentIndex(index)
elif Qt.Key_Escape == key:
# 按下Esc键时，隐藏完成列表
self.listView.hide()
elif Qt.Key_Enter == key or Qt.Key_Return == key:
# 按下回车键时，使用完成列表中选中的项，并隐藏完成列表
if (currentIndex.isValid()):
text = self.listView.currentIndex().data().toString()
self.setText(text)
self.listView.hide()
else:
# 其他情况，隐藏完成列表，并使用QLineEdit的键盘按下事件
self.listView.hide()
QLineEdit.keyPressEvent(self,e)
else:
QLineEdit.keyPressEvent(self,e)
# 动态的显示完成列表
@pyqtSlot("QString")
def setCompleter(self, text):
if (text.isEmpty()):
self.listView.hide()
return
if text.length() > 1 and not self.listView.isHidden():
return
# 如果完整的完成列表中的某个单词包含输入的文本，则加入要显示的完成列表串中
sl = QStringList()
for i in range(self.words.count()):
if self.words[i].contains(text):
sl << self.words[i]
self.model.setStringList(sl)
self.listView.setModel(self.model)
if (self.model.rowCount() == 0):
return
# Position the text edit
self.listView.setMinimumWidth(self.width())
self.listView.setMaximumWidth(self.width())
p = QPoint(0, self.height())
x = self.mapToGlobal(p).x()
y = self.mapToGlobal(p).y() + 1
self.listView.move(x, y)
self.listView.show()
# 点击完成列表中的项，使用此项自动完成输入的单词
@pyqtSlot("QModelIndex")
def completeText(self, index):
text = index.data().toString()
self.setText(text)
self.listView.hide()