Qt Documentation

  • Qt 4.8
  • StateGroup QML Element

Contents

StateGroup QML Element

The StateGroup element provides state support for non-Item elements. More...

Since: Qt 4.7

Properties

Detailed Description

Item (and all derived elements) provides built in support for states and transitions via its state, states and transitions properties. StateGroup provides an easy way to use this support in other (non-Item-derived) elements.

MyCustomObject {
    StateGroup {
        id: myStateGroup
        states: State {
            name: "state1"
            // ...
        }
        transitions: Transition {
            // ...
        }
    }

    onSomethingHappened: myStateGroup.state = "state1";
}

See also States, Transitions, and QtDeclarative.

Property Documentation

state : string

This property holds the name of the current state of the state group.

This property is often used in scripts to change between states. For example:

function toggle() {
    if (button.state == 'On')
        button.state = 'Off';
    else
        button.state = 'On';
}

If the state group is in its base state (i.e. no explicit state has been set), state will be a blank string. Likewise, you can return a state group to its base state by setting its current state to ''.

See also States.


states : list<State>

This property holds a list of states defined by the state group.

StateGroup {
    states: [
        State {
            // State definition...
        },
        State {
            // ...
        }
        // Other states...
    ]
}

See also States.


transitions : list<Transition>

This property holds a list of transitions defined by the state group.

StateGroup {
    transitions: [
        Transition {
          // ...
        },
        Transition {
          // ...
        }
        // ...
    ]
}

See also Transitions.


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