Package QML Type

Specifies a collection of named items. More...

• List of all members, including inherited members

Attached Properties

• name : string

Detailed Description

The Package type is used in conjunction with DelegateModel to enable delegates with a shared context to be provided to multiple views.

Any item within a Package may be assigned a name via the Package.name attached property.

The example below creates a Package containing two named items; list and grid. The third item in the package (the Rectangle) is parented to whichever delegate it should appear in. This allows an item to move between views.

 Package {
     Text { id: listDelegate; width: parent.width; height: 25; text: 'Empty'; Package.name: 'list' }
     Text { id: gridDelegate; width: parent.width / 2; height: 50; text: 'Empty'; Package.name: 'grid' }

     Rectangle {
         id: wrapper
         width: parent.width; height: 25
         color: 'lightsteelblue'

         Text { text: display; anchors.centerIn: parent }
         state: root.upTo > index ? 'inGrid' : 'inList'
         states: [
             State {
                 name: 'inList'
                 ParentChange { target: wrapper; parent: listDelegate }
             },
             State {
                 name: 'inGrid'
                 ParentChange {
                     target: wrapper; parent: gridDelegate
                     x: 0; y: 0; width: gridDelegate.width; height: gridDelegate.height
                 }
             }
         ]

         transitions: [
             Transition {
                 ParentAnimation {
                     NumberAnimation { properties: 'x,y,width,height'; duration: 300 }
                 }
             }
         ]
     }
 }

These named items are used as the delegates by the two views who reference the special DelegateModel::parts property to select a model which provides the chosen delegate.

 DelegateModel {
     id: visualModel
     delegate: Delegate {}
     model: myModel
 }

 ListView {
     id: lv
     height: parent.height/2
     width: parent.width

     model: visualModel.parts.list
 }
 GridView {
     y: parent.height/2
     height: parent.height/2
     width: parent.width
     cellWidth: width / 2
     cellHeight: 50
     model: visualModel.parts.grid
 }

Note: Package is part of QtQml.Models since version 2.14 and part of QtQuick since version 2.0. Importing Package via QtQuick is deprecated since Qt 5.14.

See also Qt Quick Examples - Views, Qt Quick Demo - Photo Viewer, and Qt QML.

Attached Property Documentation