Hide/show ListView sections dynamically

[Adso4]

Hi,

I have a ListView that has a ListView as delegate.
The Items of the child ListView are elements of a given category. Then, the items of the parent listView are the different categories.
The model for the children lists are a custom of QSortFilterProxyModel. Then, I would like that if, for filtering options, a child list does not have elements to show, hide the category title. Now, with current behavior, category header is shown with no children.
Code is:

ListView {
			id: headers
			anchors.fill: parent
			clip: true
			boundsBehavior: Flickable.StopAtBounds

			model: _headersModel

			delegate: 
				Item {
					width: parent.width
					height: some_value

					ListView {
						id: items_of_same_category
						anchors.fill: parent
						spacing: 5
						clip: true
						interactive: false

						model: proxy_model

						delegate: component_delegate
					}
				}

			section.property: "category_value"
                        section.criteria: ViewSection.FullString
                        section.delegate: header_delegate
                        section.labelPositioning: ViewSection.InlineLabels | ViewSection.CurrentLabelAtStart            
		}

In case of "proxy_model" is retrieving 0 children, header should not be visible.

[oria66]

Hey @Adso4. You can use this excellent library that saves a lot of work.

https://github.com/oKcerG/SortFilterProxyModel

Good luck.