MozActivity

This API is available on Firefox or Firefox OS for installed or higher privileged applications.

Summary

The MozActivity interface allows apps to delegate an activity to another app.

This interface fully inherits from the DOMRequest interface except that it has a constructor that it takes a MozActivityOptions as a parameter.

Note: As soon as a MozActivity is instantiated, the system will prompt the user to choose an activity handler. It's not possible to instantiate an activity and wait to use it.

Constructor

new MozActivity( options )

options: An object that has the same properties as the ones define in the MozActivityOptions interface.

Properties

Inherited from DOMRequest:

DOMRequest.onsuccess: A callback handler called when the operation represented by the DOMRequest is completed.
DOMRequest.onerror: A callback handler that gets called when an error occurs while processing the operation.
DOMRequest.readyState: A string indicating whether or not the operation is finished running. Its value is either "done" or "pending".
DOMRequest.result: The operation's result.
DOMRequest.error: Error information, if any.

Methods

None.

Example

var activity = new MozActivity({
  // The name of the activity the app wants to delegate the action
  name: "pick",
  // Data required by the activity. Each application acting as an activity handler 
  // can have it's own requirement for the activity. If the data does not fulfill
  // all the requirement of any activity handler, the error event will be sent
  // otherwise, the event sent depend on the activity handler itself.
  data: {
    type: "image/jpeg"
  }
});
activity.onsuccess = function() {
  console.log("Activity successfuly handled");
  var imgSrc = this.result.blob;
}
activity.onerror = function() {
  console.log("The activity encouter en error: " + this.error);
}

Specification

Web Activities is not part of any specification. However, it has some overlap with the proposed Web Intents specification. Mozilla actually proposed Web Activities as a counter proposal to Web Intents. For more information about this, see discussion on the Web Intents Task Force ML.

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari
basic support	No support	No support	No support	No support	No support

Feature	Android	Chrome for Android	Firefox OS	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
basic support	No support	No support	(Yes)	32.0 (32.0)^[1]	No support	No support	No support

[1] WebRT only