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EngineObserver.kt
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EngineObserver.kt
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package mozilla.components.browser.state.engine
import android.content.Intent
import android.graphics.Bitmap
import android.os.Environment
import mozilla.components.browser.state.action.BrowserAction
import mozilla.components.browser.state.action.ContentAction
import mozilla.components.browser.state.action.CrashAction
import mozilla.components.browser.state.action.EngineAction
import mozilla.components.browser.state.action.MediaSessionAction
import mozilla.components.browser.state.action.TrackingProtectionAction
import mozilla.components.browser.state.state.AppIntentState
import mozilla.components.browser.state.state.BrowserState
import mozilla.components.browser.state.state.LoadRequestState
import mozilla.components.browser.state.state.SecurityInfoState
import mozilla.components.browser.state.state.content.DownloadState
import mozilla.components.browser.state.state.content.DownloadState.Status.INITIATED
import mozilla.components.browser.state.state.content.FindResultState
import mozilla.components.concept.engine.EngineSession
import mozilla.components.concept.engine.EngineSessionState
import mozilla.components.concept.engine.HitResult
import mozilla.components.concept.engine.content.blocking.Tracker
import mozilla.components.concept.engine.history.HistoryItem
import mozilla.components.concept.engine.manifest.WebAppManifest
import mozilla.components.concept.engine.media.RecordingDevice
import mozilla.components.concept.engine.mediasession.MediaSession
import mozilla.components.concept.engine.permission.PermissionRequest
import mozilla.components.concept.engine.prompt.PromptRequest
import mozilla.components.concept.engine.window.WindowRequest
import mozilla.components.concept.fetch.Response
import mozilla.components.lib.state.Store
/**
* [EngineSession.Observer] implementation responsible to update the state of a [Session] from the events coming out of
* an [EngineSession].
*/
@Suppress("TooManyFunctions", "LargeClass")
internal class EngineObserver(
private val tabId: String,
private val store: Store<BrowserState, BrowserAction>
) : EngineSession.Observer {
override fun onNavigateBack() {
store.dispatch(ContentAction.UpdateSearchTermsAction(tabId, ""))
}
override fun onFirstContentfulPaint() {
store.dispatch(ContentAction.UpdateFirstContentfulPaintStateAction(tabId, true))
}
override fun onPaintStatusReset() {
store.dispatch(ContentAction.UpdateFirstContentfulPaintStateAction(tabId, false))
}
override fun onLocationChange(url: String) {
store.dispatch(ContentAction.UpdateUrlAction(tabId, url))
}
@Suppress("DEPRECATION") // Session observable is deprecated
override fun onLoadRequest(
url: String,
triggeredByRedirect: Boolean,
triggeredByWebContent: Boolean
) {
if (triggeredByRedirect || triggeredByWebContent) {
store.dispatch(ContentAction.UpdateSearchTermsAction(tabId, ""))
}
val loadRequest = LoadRequestState(url, triggeredByRedirect, triggeredByWebContent)
store.dispatch(ContentAction.UpdateLoadRequestAction(tabId, loadRequest))
}
override fun onLaunchIntentRequest(url: String, appIntent: Intent?) {
store.dispatch(ContentAction.UpdateAppIntentAction(tabId, AppIntentState(url, appIntent)))
}
override fun onTitleChange(title: String) {
store.dispatch(ContentAction.UpdateTitleAction(tabId, title))
}
override fun onProgress(progress: Int) {
store.dispatch(ContentAction.UpdateProgressAction(tabId, progress))
}
override fun onLoadingStateChange(loading: Boolean) {
store.dispatch(ContentAction.UpdateLoadingStateAction(tabId, loading))
if (loading) {
store.dispatch(ContentAction.ClearFindResultsAction(tabId))
store.dispatch(ContentAction.UpdateRefreshCanceledStateAction(tabId, false))
store.dispatch(TrackingProtectionAction.ClearTrackersAction(tabId))
}
}
override fun onNavigationStateChange(canGoBack: Boolean?, canGoForward: Boolean?) {
canGoBack?.let {
store.dispatch(ContentAction.UpdateBackNavigationStateAction(tabId, canGoBack))
}
canGoForward?.let {
store.dispatch(ContentAction.UpdateForwardNavigationStateAction(tabId, canGoForward))
}
}
override fun onSecurityChange(secure: Boolean, host: String?, issuer: String?) {
store.dispatch(
ContentAction.UpdateSecurityInfoAction(
tabId,
SecurityInfoState(secure, host ?: "", issuer ?: "")
)
)
}
override fun onTrackerBlocked(tracker: Tracker) {
store.dispatch(TrackingProtectionAction.TrackerBlockedAction(tabId, tracker))
}
override fun onTrackerLoaded(tracker: Tracker) {
store.dispatch(TrackingProtectionAction.TrackerLoadedAction(tabId, tracker))
}
override fun onExcludedOnTrackingProtectionChange(excluded: Boolean) {
store.dispatch(TrackingProtectionAction.ToggleExclusionListAction(tabId, excluded))
}
override fun onTrackerBlockingEnabledChange(enabled: Boolean) {
store.dispatch(TrackingProtectionAction.ToggleAction(tabId, enabled))
}
override fun onLongPress(hitResult: HitResult) {
store.dispatch(
ContentAction.UpdateHitResultAction(tabId, hitResult)
)
}
override fun onFind(text: String) {
store.dispatch(ContentAction.ClearFindResultsAction(tabId))
}
override fun onFindResult(activeMatchOrdinal: Int, numberOfMatches: Int, isDoneCounting: Boolean) {
store.dispatch(
ContentAction.AddFindResultAction(
tabId,
FindResultState(
activeMatchOrdinal,
numberOfMatches,
isDoneCounting
)
)
)
}
override fun onExternalResource(
url: String,
fileName: String?,
contentLength: Long?,
contentType: String?,
cookie: String?,
userAgent: String?,
isPrivate: Boolean,
response: Response?
) {
// We want to avoid negative contentLength values
// For more info see https://bugzilla.mozilla.org/show_bug.cgi?id=1632594
val fileSize = if (contentLength != null && contentLength < 0) null else contentLength
val download = DownloadState(
url,
fileName,
contentType,
fileSize,
0,
INITIATED,
userAgent,
Environment.DIRECTORY_DOWNLOADS,
private = isPrivate,
response = response
)
store.dispatch(
ContentAction.UpdateDownloadAction(
tabId,
download
)
)
}
override fun onDesktopModeChange(enabled: Boolean) {
store.dispatch(
ContentAction.UpdateDesktopModeAction(
tabId, enabled
)
)
}
override fun onFullScreenChange(enabled: Boolean) {
store.dispatch(
ContentAction.FullScreenChangedAction(
tabId, enabled
)
)
}
override fun onMetaViewportFitChanged(layoutInDisplayCutoutMode: Int) {
store.dispatch(
ContentAction.ViewportFitChangedAction(
tabId, layoutInDisplayCutoutMode
)
)
}
override fun onThumbnailChange(bitmap: Bitmap?) {
store.dispatch(
if (bitmap == null) {
ContentAction.RemoveThumbnailAction(tabId)
} else {
ContentAction.UpdateThumbnailAction(tabId, bitmap)
}
)
}
override fun onContentPermissionRequest(permissionRequest: PermissionRequest) {
store.dispatch(
ContentAction.UpdatePermissionsRequest(
tabId,
permissionRequest
)
)
}
override fun onCancelContentPermissionRequest(permissionRequest: PermissionRequest) {
store.dispatch(
ContentAction.ConsumePermissionsRequest(
tabId,
permissionRequest
)
)
}
override fun onAppPermissionRequest(permissionRequest: PermissionRequest) {
store.dispatch(
ContentAction.UpdateAppPermissionsRequest(
tabId,
permissionRequest
)
)
}
override fun onPromptRequest(promptRequest: PromptRequest) {
store.dispatch(
ContentAction.UpdatePromptRequestAction(
tabId,
promptRequest
)
)
}
override fun onPromptDismissed(promptRequest: PromptRequest) {
store.dispatch(
ContentAction.ConsumePromptRequestAction(tabId, promptRequest)
)
}
override fun onRepostPromptCancelled() {
store.dispatch(ContentAction.UpdateRefreshCanceledStateAction(tabId, true))
}
override fun onBeforeUnloadPromptDenied() {
store.dispatch(ContentAction.UpdateRefreshCanceledStateAction(tabId, true))
}
override fun onWindowRequest(windowRequest: WindowRequest) {
store.dispatch(
ContentAction.UpdateWindowRequestAction(
tabId,
windowRequest
)
)
}
override fun onShowDynamicToolbar() {
store.dispatch(
ContentAction.UpdateExpandedToolbarStateAction(tabId, true)
)
}
override fun onMediaActivated(mediaSessionController: MediaSession.Controller) {
store.dispatch(
MediaSessionAction.ActivatedMediaSessionAction(
tabId,
mediaSessionController
)
)
}
override fun onMediaDeactivated() {
store.dispatch(MediaSessionAction.DeactivatedMediaSessionAction(tabId))
}
override fun onMediaMetadataChanged(metadata: MediaSession.Metadata) {
store.dispatch(MediaSessionAction.UpdateMediaMetadataAction(tabId, metadata))
}
override fun onMediaPlaybackStateChanged(playbackState: MediaSession.PlaybackState) {
store.dispatch(
MediaSessionAction.UpdateMediaPlaybackStateAction(
tabId,
playbackState
)
)
}
override fun onMediaFeatureChanged(features: MediaSession.Feature) {
store.dispatch(
MediaSessionAction.UpdateMediaFeatureAction(
tabId,
features
)
)
}
override fun onMediaPositionStateChanged(positionState: MediaSession.PositionState) {
store.dispatch(
MediaSessionAction.UpdateMediaPositionStateAction(
tabId,
positionState
)
)
}
override fun onMediaMuteChanged(muted: Boolean) {
store.dispatch(
MediaSessionAction.UpdateMediaMutedAction(
tabId,
muted
)
)
}
override fun onMediaFullscreenChanged(
fullscreen: Boolean,
elementMetadata: MediaSession.ElementMetadata?
) {
store.dispatch(
MediaSessionAction.UpdateMediaFullscreenAction(
tabId,
fullscreen,
elementMetadata
)
)
}
override fun onWebAppManifestLoaded(manifest: WebAppManifest) {
store.dispatch(ContentAction.UpdateWebAppManifestAction(tabId, manifest))
}
override fun onCrash() {
store.dispatch(
CrashAction.SessionCrashedAction(
tabId
)
)
}
override fun onProcessKilled() {
store.dispatch(
EngineAction.KillEngineSessionAction(
tabId
)
)
}
override fun onStateUpdated(state: EngineSessionState) {
store.dispatch(
EngineAction.UpdateEngineSessionStateAction(
tabId, state
)
)
}
override fun onRecordingStateChanged(devices: List<RecordingDevice>) {
store.dispatch(
ContentAction.SetRecordingDevices(
tabId, devices
)
)
}
override fun onHistoryStateChanged(historyList: List<HistoryItem>, currentIndex: Int) {
store.dispatch(
ContentAction.UpdateHistoryStateAction(
tabId,
historyList,
currentIndex
)
)
}
}