100 lines
2.8 KiB
Python
100 lines
2.8 KiB
Python
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Created on 2018年11月4日
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@author: Irony
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@site: https://pyqt5.com, https://github.com/892768447
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@email: 892768447@qq.com
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@file: 删除Item
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@description:
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"""
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from PyQt5.QtCore import QSize, pyqtSignal
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from PyQt5.QtWidgets import QWidget, QHBoxLayout, QLineEdit, QPushButton,\
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QListWidgetItem, QVBoxLayout, QListWidget
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__Author__ = """By: Irony
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QQ: 892768447
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Email: 892768447@qq.com"""
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__Copyright__ = 'Copyright (c) 2018 Irony'
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__Version__ = 1.0
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class ItemWidget(QWidget):
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itemDeleted = pyqtSignal(QListWidgetItem)
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def __init__(self, text, item, *args, **kwargs):
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super(ItemWidget, self).__init__(*args, **kwargs)
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self._item = item # 保留list item的对象引用
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layout = QHBoxLayout(self)
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layout.setContentsMargins(0, 0, 0, 0)
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layout.addWidget(QLineEdit(text, self))
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layout.addWidget(QPushButton('x', self, clicked=self.doDeleteItem))
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def doDeleteItem(self):
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self.itemDeleted.emit(self._item)
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def sizeHint(self):
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# 决定item的高度
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return QSize(200, 40)
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class Window(QWidget):
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def __init__(self, *args, **kwargs):
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super(Window, self).__init__(*args, **kwargs)
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layout = QVBoxLayout(self)
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# 列表
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self.listWidget = QListWidget(self)
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layout.addWidget(self.listWidget)
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# 清空按钮
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self.clearBtn = QPushButton('清空', self, clicked=self.doClearItem)
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layout.addWidget(self.clearBtn)
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# 添加测试数据
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self.testData()
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def doDeleteItem(self, item):
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# 根据item得到它对应的行数
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row = self.listWidget.indexFromItem(item).row()
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# 删除item
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item = self.listWidget.takeItem(row)
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# 删除widget
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self.listWidget.removeItemWidget(item)
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del item
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def doClearItem(self):
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# 清空所有Item
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for _ in range(self.listWidget.count()):
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# 删除item
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# 一直是0的原因是一直从第一行删,删掉第一行后第二行变成了第一行
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# 这个和删除list [] 里的数据是一个道理
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item = self.listWidget.takeItem(0)
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# 删除widget
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self.listWidget.removeItemWidget(item)
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del item
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def testData(self):
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# 生成测试数据
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for i in range(100):
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item = QListWidgetItem(self.listWidget)
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widget = ItemWidget('item: {}'.format(i), item, self.listWidget)
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# 绑定删除信号
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widget.itemDeleted.connect(self.doDeleteItem)
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self.listWidget.setItemWidget(item, widget)
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if __name__ == '__main__':
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import sys
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import cgitb
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sys.excepthook = cgitb.enable(1, None, 5, 'text')
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from PyQt5.QtWidgets import QApplication
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app = QApplication(sys.argv)
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w = Window()
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w.show()
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sys.exit(app.exec_())
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