QML ValueSpacePublisher Element

The ValueSpacePublisher element represents a path in the value space where keys can be published. More...

This element was introduced in Mobility 1.2.

• List of all members, including inherited members

Properties

• hasSubscribers : bool
• keys : QStringList
• path : string
• server : bool
• value : QVariant

Detailed Description

ValueSpacePublishers are constructed with a set path which cannot be changed. If you need to publish within multiple different paths, you will need multiple ValueSpacePublishers.

For the keys within the path chosen, if the key names to be published are alphanumeric, they may be accessed through dynamic properties by setting the keys list.

Example:

 ValueSpacePublisher {
     id: battery
     path: "/power/battery"
     keys: ["charge", "charging"]
 }

 MouseArea {
     onClicked: {
         battery.charge = 50
         battery.charging = true
     }
 }

Alternatively, for key names that can't be mapped to properties, or for key names shadowed by existing properties (like "value" or "path"), you can also access the value property of the Publisher itself.

 ValueSpacePublisher {
     id: nonalpha
     path: "/something/with a space/value"
 }

 MouseArea {
     onClicked: {
         nonalpha.value = "example"
     }
 }

The ValueSpacePublisher element is part of the QtMobility.publishsubscribe 1.2 module.

See also QValueSpacePublisher.

Property Documentation