android-components / mozilla.components.concept.engine / EngineSession / Observer

# Observer

`interface Observer` (source)

Interface to be implemented by classes that want to observe this engine session.

### Functions

onDesktopModeChange | `open fun onDesktopModeChange(enabled: Boolean): Unit`
onExternalResource | `open fun onExternalResource(url: String, fileName: String, contentLength: Long? = null, contentType: String? = null, cookie: String? = null, userAgent: String? = null): Unit`
onFind | `open fun onFind(text: String): Unit`
onFindResult | `open fun onFindResult(activeMatchOrdinal: Int, numberOfMatches: Int, isDoneCounting: Boolean): Unit`
onFullScreenChange | `open fun onFullScreenChange(enabled: Boolean): Unit`
onLoadingStateChange | `open fun onLoadingStateChange(loading: Boolean): Unit`
onLocationChange | `open fun onLocationChange(url: String): Unit`
onLongPress | `open fun onLongPress(hitResult: HitResult): Unit`
onNavigationStateChange | `open fun onNavigationStateChange(canGoBack: Boolean? = null, canGoForward: Boolean? = null): Unit`
onProgress | `open fun onProgress(progress: Int): Unit`
onSecurityChange | `open fun onSecurityChange(secure: Boolean, host: String? = null, issuer: String? = null): Unit`
onThumbnailChange | `open fun onThumbnailChange(bitmap: Bitmap?): Unit`
onTitleChange | `open fun onTitleChange(title: String): Unit`
onTrackerBlocked | `open fun onTrackerBlocked(url: String): Unit`
onTrackerBlockingEnabledChange | `open fun onTrackerBlockingEnabledChange(enabled: Boolean): Unit`