Migrate some "selected tab" reads from SessionManager to BrowserStore.

app/src/main/java/org/mozilla/fenix/FenixApplication.kt

@@ -22,6 +22,7 @@ import kotlinx.coroutines.launch
 import mozilla.appservices.Megazord
 import mozilla.components.browser.session.Session
 import mozilla.components.browser.state.action.SystemAction
+import mozilla.components.browser.state.selector.selectedTab
 import mozilla.components.concept.base.crash.Breadcrumb
 import mozilla.components.concept.push.PushProcessor
 import mozilla.components.feature.addons.update.GlobalAddonDependencyProvider
@@ -398,7 +399,7 @@ open class FenixApplication : LocaleAwareApplication(), Provider {
                 onNewTabOverride = {
                     _, engineSession, url ->
                         val shouldCreatePrivateSession =
-                            components.core.sessionManager.selectedSession?.private
+                            components.core.store.state.selectedTab?.content?.private
                                 ?: components.settings.openLinksInAPrivateTab
 
                         val session = Session(url, shouldCreatePrivateSession)

app/src/main/java/org/mozilla/fenix/browser/BrowserFragment.kt

@@ -68,6 +68,7 @@ class BrowserFragment : BaseBrowserFragment(), UserInteractionHandler {
                         contentLayout = browserLayout,
                         tabPreview = tabPreview,
                         toolbarLayout = browserToolbarView.view,
+                        store = components.core.store,
                         sessionManager = components.core.sessionManager
                     )
                 )

app/src/main/java/org/mozilla/fenix/browser/ToolbarGestureHandler.kt

@@ -19,6 +19,8 @@ import androidx.core.view.isVisible
 import androidx.interpolator.view.animation.LinearOutSlowInInterpolator
 import mozilla.components.browser.session.Session
 import mozilla.components.browser.session.SessionManager
+import mozilla.components.browser.state.selector.selectedTab
+import mozilla.components.browser.state.store.BrowserStore
 import mozilla.components.support.ktx.android.view.getRectWithViewLocation
 import org.mozilla.fenix.R
 import org.mozilla.fenix.ext.getRectWithScreenLocation
@@ -40,6 +42,7 @@ class ToolbarGestureHandler(
     private val contentLayout: View,
     private val tabPreview: TabPreview,
     private val toolbarLayout: View,
+    private val store: BrowserStore,
     private val sessionManager: SessionManager
 ) : SwipeGestureListener {
 
@@ -145,15 +148,15 @@ class ToolbarGestureHandler(
 
     private fun getDestination(): Destination {
         val isLtr = activity.resources.configuration.layoutDirection == View.LAYOUT_DIRECTION_LTR
-        val currentSession = sessionManager.selectedSession ?: return Destination.None
+        val currentTab = store.state.selectedTab ?: return Destination.None
-        val currentIndex = sessionManager.sessionsOfType(currentSession.private).indexOfFirst {
+        val currentIndex = sessionManager.sessionsOfType(currentTab.content.private).indexOfFirst {
-            it.id == currentSession.id
+            it.id == currentTab.id
         }
 
         return if (currentIndex == -1) {
             Destination.None
         } else {
-            val sessions = sessionManager.sessionsOfType(currentSession.private)
+            val sessions = sessionManager.sessionsOfType(currentTab.content.private)
             val index = when (gestureDirection) {
                 GestureDirection.RIGHT_TO_LEFT -> if (isLtr) {
                     currentIndex + 1

app/src/main/java/org/mozilla/fenix/components/toolbar/BrowserToolbarController.kt

@@ -77,7 +77,7 @@ class DefaultBrowserToolbarController(
         store.updateSearchTermsOfSelectedSession(text)
         activity.components.useCases.searchUseCases.defaultSearch.invoke(
             text,
-            sessionId = sessionManager.selectedSession?.id
+            sessionId = store.state.selectedTabId
         )
     }
 

app/src/main/java/org/mozilla/fenix/components/toolbar/BrowserToolbarView.kt

@@ -24,6 +24,7 @@ import kotlinx.android.synthetic.main.component_browser_top_toolbar.view.*
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import mozilla.components.browser.domains.autocomplete.ShippedDomainsProvider
 import mozilla.components.browser.session.Session
+import mozilla.components.browser.state.selector.selectedTab
 import mozilla.components.browser.state.state.ExternalAppType
 import mozilla.components.browser.toolbar.BrowserToolbar
 import mozilla.components.browser.toolbar.behavior.BrowserToolbarBottomBehavior
@@ -98,7 +99,6 @@ class BrowserToolbarView(
         }
 
         with(container.context) {
-            val sessionManager = components.core.sessionManager
             val isPinningSupported = components.useCases.webAppUseCases.isPinningSupported()
 
             if (toolbarPosition == ToolbarPosition.TOP) {
@@ -206,7 +206,7 @@ class BrowserToolbarView(
                     components.core.historyStorage,
                     lifecycleOwner,
                     sessionId = null,
-                    isPrivate = sessionManager.selectedSession?.private ?: false,
+                    isPrivate = components.core.store.state.selectedTab?.content?.private ?: false,
                     interactor = interactor,
                     engine = components.core.engine
                 )

app/src/main/java/org/mozilla/fenix/shortcut/CreateShortcutFragment.kt

@@ -13,6 +13,7 @@ import androidx.fragment.app.DialogFragment
 import androidx.lifecycle.lifecycleScope
 import kotlinx.android.synthetic.main.fragment_create_shortcut.*
 import kotlinx.coroutines.launch
+import mozilla.components.browser.state.selector.selectedTab
 import org.mozilla.fenix.R
 import org.mozilla.fenix.ext.loadIntoView
 import org.mozilla.fenix.ext.requireComponents
@@ -32,12 +33,12 @@ class CreateShortcutFragment : DialogFragment() {
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
-        val session = requireComponents.core.sessionManager.selectedSession
+        val tab = requireComponents.core.store.state.selectedTab
 
-        if (session == null) {
+        if (tab == null) {
             dismiss()
         } else {
-            requireComponents.core.icons.loadIntoView(favicon_image, session.url)
+            requireComponents.core.icons.loadIntoView(favicon_image, tab.content.url)
 
             cancel_button.setOnClickListener { dismiss() }
             add_button.setOnClickListener {
@@ -52,7 +53,7 @@ class CreateShortcutFragment : DialogFragment() {
                 updateAddButtonEnabledState()
             }
 
-            shortcut_text.setText(session.title)
+            shortcut_text.setText(tab.content.title)
         }
     }