well, for those who run into the same issue:
The key was to override the view's closeEditor event, check for the
incoming hint (QAbstractItemDelegate.NoHint when the tab key is pressed)
and fire off QListView.closeEditor(self, editor,
QtWidgets.QAbstractItemDelegate.SubmitModelCache) manually.
On 19/03/19 6:35 PM, Frank Rueter | OHUfx wrote:
Hi all,
I have a simple QListView in which I would like to edit items by
clicking into empty space, typing, then hitting either enter or tab.
I’d like the tab Key_Tab event to behave exactly like Key_Enter event,
but it’s a bit stubborn.
When I hit tab while editing an item (i.e. editor is open), the first
item in the list is selected.
I noticed that when hitting the tab key in an open editor only a
QtCore.QEvent.ShortcutOverride is triggered.
It looks like I can simply react to that in my situation though I’m
not sure if that is wise?!
If I do, how would I manually emit an event that looks like a
Key_Enter event?
Otherwise, how can I avoid above behaviour for the tab key and make it
behave like a regular key (I assume it’s trying to change focus in the
focus chain but don’t know how to make it stop)?
Here is some example code to show my problem.
Cheers,
frank
|class AddresseeDelegate(QtWidgets.QItemDelegate): is_valid =
QtCore.Signal() is_not_valid = QtCore.Signal(QtCore.QModelIndex) def
__init__(self, users=[], groups=[], parent=None):
super(AddresseeDelegate, self).__init__(parent) self.valid_item_texts
= [u['name'] for u in users] + [g['code'] for g in groups] def
createEditor(self, parent, option, index): self.editor =
QtWidgets.QLineEdit(parent) self.editor.setMinimumWidth(100) completer
= QtWidgets.QCompleter(self.valid_item_texts)
completer.setCaseSensitivity(QtCore.Qt.CaseInsensitive)
completer.setCompletionMode(QtWidgets.QCompleter.InlineCompletion)
self.editor.setCompleter(completer)
self.editor.editingFinished.connect(lambda: self.validate_text(index))
return self.editor def setModelData(self, editor, model, index):
model.setData(index, editor.text()) def validate_text(self,
index=None): if self.editor.text() in self.valid_item_texts: # valid
input self.commitData.emit(self.editor)
self.closeEditor.emit(self.editor) self.is_valid.emit() else: #
invalid input self.closeEditor.emit(self.editor)
self.is_not_valid.emit(index) class
AddresseeListView(QtWidgets.QListView): def __init__(self, users=[],
groups=[], parent=None): '''Simple addressee widget.'''
super(AddresseeListView, self).__init__(parent)
self.setEditTriggers(QtWidgets.QAbstractItemView.NoEditTriggers)
self.setFlow(QtWidgets.QListView.LeftToRight)
self.setResizeMode(QtWidgets.QListView.ResizeMode.Adjust)
self.setSpacing(10) self.setViewMode(QtWidgets.QListView.IconMode)
#self.setWrapping(True) # delegate delegate = AddresseeDelegate(users,
groups) self.setItemDelegate(delegate)
delegate.is_not_valid.connect(self.delete_invalid_index) # model model
= QtGui.QStandardItemModel() #model = Model() self.setModel(model) def
event(self, event): if event.type() == QtCore.QEvent.ShortcutOverride:
# need to emit a Key_Enter event here event.accept() return
super(AddresseeListView, self).event(event) def mousePressEvent(self,
event): self.add_and_edit() def add_and_edit(self): '''Add a new row
and open editor''' print 'adding row' new_item =
QtGui.QStandardItem('') self.model().appendRow(new_item)
self.edit(self.model().indexFromItem(new_item)) def
delete_invalid_index(self, index): '''Remove invalid entry'''
self.model().removeRow(index.row()) if __name__ == '__main__': app =
QtWidgets.QApplication(sys.argv) users = [{'name':'aa'},
{'name':'bb'}] groups = [{'code':'cc'}, {'code':'dd'}] w =
AddresseeListView(users, groups) w.show() w.raise_() app.exec_() |
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