// I have a webview filling the screen and want to associate the back gesture with browsing back in the history, unless we cannot go back// in which case the event should bubble.// in app/assistants/Guide-assistant.js// this.canGoBack is true when the webview can go back, and is being set properly (I have triple checked)GuideAssistant.prototype.handleCommand = function(event) { Mojo.Log.info('[GuideAssistant.handleCommand] event.type = ', event.type, ', event.command = ', event.command); if (event.type == Mojo.Event.back) { Mojo.Log.info('Mojo.Event.back ... canGoBack = ', this.canGoBack); if (this.canGoBack) { Mojo.Log.info('going back'); this.webView.mojo.goBack(); event.stopPropagation(); } }}// in app/assistants/stage-assistant.jsStageAssistant.prototype.handleCommand = function(event) { Mojo.Log.info('[StageAssistant.handleCommand] event.type = ', event.type, ', event.command = ', event.command); if (event.type == Mojo.Event.back && event.canceled) { Mojo.Log.info('handling canceled back event'); event.stopPropagation(); event.cancelBubble = true; event.bubbles = false; } else if (event.type == Mojo.Event.back) { Mojo.Log.info('handling normal back event'); } else Mojo.Log.info('event.type = ', event.type, ', event.command = ', event.command);}// The mysterious bit is that the event doesn't bubble up to the stage assistant, but does bubble as something else handles it. app controller?// Can I mess with the command chain in controllers?