ExclusiveGroup QML Type
ExclusiveGroup provides a way to declare several checkable controls as mutually exclusive. More...
Import Statement: | import QtQuick.Controls 1.4 |
Properties
- current : object
Methods
- void bindCheckable(object)
- void unbindCheckable(object)
Detailed Description
ExclusiveGroup can contain several Action items, and those will automatically get their Action::exclusiveGroup property assigned.
ExclusiveGroup { id: radioInputGroup Action { id: dabRadioInput text: "DAB" checkable: true } Action { id: fmRadioInput text: "FM" checkable: true } Action { id: amRadioInput text: "AM" checkable: true } }
Several controls already support ExclusiveGroup, e.g. Action, MenuItem, Button, and RadioButton.
As ExclusiveGroup only supports Action as child items, we need to manually assign the exclusiveGroup
property for other objects.
GroupBox { id: group2 title: qsTr("Tab Position") Layout.fillWidth: true RowLayout { ExclusiveGroup { id: tabPositionGroup } RadioButton { id: topButton text: qsTr("Top") checked: true exclusiveGroup: tabPositionGroup Layout.minimumWidth: 100 } RadioButton { id: bottomButton text: qsTr("Bottom") exclusiveGroup: tabPositionGroup Layout.minimumWidth: 100 } } }
Adding support to ExclusiveGroup
It is possible to add support for ExclusiveGroup for an object or control. It should have a checked
property, and either a checkedChanged
, toggled()
, or toggled(bool)
signal. It also needs to be bound with ExclusiveGroup::bindCheckable() when its ExclusiveGroup typed property is set.
Item { id: myItem property bool checked: false property ExclusiveGroup exclusiveGroup: null onExclusiveGroupChanged: { if (exclusiveGroup) exclusiveGroup.bindCheckable(myItem) } }
The example above shows the minimum code necessary to add ExclusiveGroup support to any item.
Property Documentation
The currently selected object. Defaults to the first checked object bound to the ExclusiveGroup. If there is none, then it defaults to null
.
Method Documentation
Register object
to the exclusive group.
You should only need to call this function when creating a component you want to be compatible with ExclusiveGroup
.
See also ExclusiveGroup::unbindCheckable().
Unregister object
from the exclusive group.
You should only need to call this function when creating a component you want to be compatible with ExclusiveGroup
.
See also ExclusiveGroup::bindCheckable().
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