def setModelData(self, editor: QWidget, model: QAbstractItemModel,
index: QModelIndex):
text = editor.text()
if text == "":
text = editor.placeholderText()
# Update the "default" text to the previous value edited in
self._default_text = text
model.setData(index, text, Qt.DisplayRole)
def setModelData(self, editor: QWidget, model: QAbstractItemModel,
index: QModelIndex) -> None:
editor: QFileDialog
result: int = editor.result()
if result == QDialog.Accepted:
# if accepted, this means that the user also wanted to overwrite the file
dstPath: str = editor.selectedFiles()[0]
dstPath: Path = Path(dstPath)
model.setData(index, dstPath, Qt.EditRole)
def editorEvent(
self,
event: QtCore.QEvent,
model: QtCore.QAbstractItemModel,
option: QStyleOptionViewItem,
index: QtCore.QModelIndex,
) -> bool:
"""Called when an event has occured in the editor.
This can be used to customize how the delegate handles mouse/key events
"""
if (event.type() == event.MouseButtonRelease
and event.button() == Qt.RightButton):
self.show_context_menu(index, model, event.globalPos(),
option.widget)
# if the user clicks quickly on the visibility checkbox, we *don't*
# want it to be interpreted as a double-click. We want the visibilty
# to simply be toggled.
if event.type() == event.MouseButtonDblClick:
self.initStyleOption(option, index)
style = option.widget.style()
check_rect = style.subElementRect(
style.SE_ItemViewItemCheckIndicator, option, option.widget)
if check_rect.contains(event.pos()):
cur_state = index.data(Qt.CheckStateRole)
if model.flags(index) & Qt.ItemIsUserTristate:
state = Qt.CheckState((cur_state + 1) % 3)
else:
state = Qt.Unchecked if cur_state else Qt.Checked
return model.setData(index, state, Qt.CheckStateRole)
# refer all other events to the QStyledItemDelegate
return super().editorEvent(event, model, option, index)
def editorEvent(self, event: QtCore.QEvent,
model: QtCore.QAbstractItemModel,
option: 'QStyleOptionViewItem',
index: QtCore.QModelIndex) -> bool:
decorationRect = option.rect
if event.type() == QEvent.MouseButtonPress and calculate_middle_rect(
decorationRect, 20, 20).contains(event.pos()):
item = index.model().data(index, Qt.UserRole)
if isinstance(item, QVariant):
return QStyledItemDelegate.editorEvent(self, event, model,
option, index)
value = item['value']
type = item['type']
if type == 'checkbox':
# 数据转换
value = 1 if value == 0 else 0
model.setData(index, value, Qt.DisplayRole)
return QStyledItemDelegate.editorEvent(self, event, model, option,
index)