michael@0: /* Any copyright is dedicated to the Public Domain.
michael@0:    http://creativecommons.org/publicdomain/zero/1.0/ */
michael@0: 
michael@0: const { classes: Cc, interfaces: Ci, results: Cr, utils: Cu } = Components;
michael@0: const { Services } = Cu.import('resource://gre/modules/Services.jsm');
michael@0: const { SystemAppProxy } = Cu.import('resource://gre/modules/SystemAppProxy.jsm');
michael@0: 
michael@0: var processId;
michael@0: 
michael@0: function peekChildId(aSubject, aTopic, aData) {
michael@0:   Services.obs.removeObserver(peekChildId, 'recording-device-events');
michael@0:   Services.obs.removeObserver(peekChildId, 'recording-device-ipc-events');
michael@0:   let props = aSubject.QueryInterface(Ci.nsIPropertyBag2);
michael@0:   if (props.hasKey('childID')) {
michael@0:     processId = props.get('childID');
michael@0:   }
michael@0: }
michael@0: 
michael@0: addMessageListener('init-chrome-event', function(message) {
michael@0:   // listen mozChromeEvent and forward to content process.
michael@0:   let type = message.type;
michael@0:   SystemAppProxy.addEventListener('mozChromeEvent', function(event) {
michael@0:     let details = event.detail;
michael@0:     if (details.type === type) {
michael@0:       sendAsyncMessage('chrome-event', details);
michael@0:     }
michael@0:   }, true);
michael@0: 
michael@0:   Services.obs.addObserver(peekChildId, 'recording-device-events', false);
michael@0:   Services.obs.addObserver(peekChildId, 'recording-device-ipc-events', false);
michael@0: });
michael@0: 
michael@0: addMessageListener('fake-content-shutdown', function(message) {
michael@0:     let props = Cc["@mozilla.org/hash-property-bag;1"]
michael@0:                   .createInstance(Ci.nsIWritablePropertyBag2);
michael@0:     if (processId) {
michael@0:       props.setPropertyAsUint64('childID', processId);
michael@0:     }
michael@0:     Services.obs.notifyObservers(props, 'recording-device-ipc-events', 'content-shutdown');
michael@0: });