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我创建了一个自定义项目的委托,它可以让用户编辑的文件路径列表的定制QItemDelegate :: createEditor()创建编辑:如何附近
我已经通过这个实现自定义类DirEdit。现在,选择的路径将提交并且当用户按下进入编辑器是关闭的,但我想补充的两种情况下,编辑应用户不用按回车被关闭:
- 当用户选择文件通过激活组合框条目(通过单击或按回车键)
- 当用户通过单击“省略号”工具按钮选择文件时。
我一直用clearFocus()和其他方法实现,但似乎没有任何工作。下面是一个完整的例子:
#include <QtWidgets>
class DirEdit : public QWidget
{
QLineEdit* lineEdit=nullptr;
public:
DirEdit(QWidget* parent=nullptr)
: QWidget(parent)
{
new QHBoxLayout(this);
layout()->setMargin(0);
layout()->addWidget(lineEdit=new QLineEdit(this));
QCompleter *completer = new QCompleter(this);
auto model = new QDirModel(completer);
model->setFilter(QDir::AllDirs|QDir::NoDotAndDotDot);
completer->setModel(model);
lineEdit->setCompleter(completer);
connect(completer, static_cast<void (QCompleter::*)(const QString&)>(&QCompleter::activated), [this](const QString& text)
{
// >>>>>>>>>>>>>>>>>>>>>>> TODO: Make the editor close here <<<<<<<<<<<<<<<<<<<<<<<<<<<<
});
QToolButton* dotDotDot;
layout()->addWidget(dotDotDot=new QToolButton(this));
dotDotDot->setText("...");
connect(dotDotDot, &QToolButton::clicked, this, [this]()
{
QString dir = QFileDialog::getExistingDirectory(window(), "Select Directory", lineEdit->text());
if(dir!="")
{
lineEdit->setText(dir);
// >>>>>>>>>>>>>>>>>>>>>>> TODO: Make the editor close here <<<<<<<<<<<<<<<<<<<<<<<<<<<<
}
});
setFocusProxy(lineEdit);
}
void setPath(const QString& path)
{
lineEdit->setText(path);
}
QString path()const
{
return lineEdit->text();
}
};
class MyDelegate : public QItemDelegate
{
QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &, const QModelIndex &index) const
{
return new DirEdit(parent);
}
void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem& option, const QModelIndex &)const
{
editor->setGeometry(option.rect);
}
void setEditorData(QWidget *editor, const QModelIndex &index) const
{
QVariant value = index.model()->data(index, Qt::DisplayRole);
if (DirEdit *dirEdit = dynamic_cast<DirEdit *>(editor))
dirEdit->setPath(value.toString());
}
void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
{
if (DirEdit *dirEdit = dynamic_cast<DirEdit *>(editor))
model->setData(index, dirEdit->path());
}
};
int main(int argc, char* argv[])
{
QApplication app(argc, argv);
QListWidget listWidget;
listWidget.setItemDelegate(new MyDelegate);
listWidget.addItem(QStandardPaths::writableLocation(QStandardPaths::DesktopLocation));
listWidget.addItem(QStandardPaths::writableLocation(QStandardPaths::MusicLocation));
listWidget.addItem(QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation));
listWidget.addItem(QStandardPaths::writableLocation(QStandardPaths::DownloadLocation));
for (int i = 0; i<listWidget.count(); i++)
listWidget.item(i)->setFlags(listWidget.item(0)->flags()|Qt::ItemIsEditable);
listWidget.show();
return app.exec();
}
也许'QAbstractItemView中:: closePersistentEditor(工作)'可以帮帮我? – vahancho
@vahancho我不这么认为,因为它不是一个持久性编辑器(由QAbstractItemView :: openPersistentEditor()创建) – bgp2000
嗯,我想你需要关闭'QCompleter :: popup()'?怎么样调用'completer-> popup() - > close()'? – vahancho