Update tools fragment layout

app/src/main/java/org/koitharu/kotatsu/main/ui/MainNavigationDelegate.kt

@@ -46,6 +46,7 @@ class MainNavigationDelegate(
 	fun onCreate(savedInstanceState: Bundle?) {
 		primaryFragment?.let {
 			onFragmentChanged(it, fromUser = false)
+			navBar.selectedItemId = getItemId(it)
 		} ?: onNavigationItemSelected(navBar.selectedItemId)
 	}
 
@@ -92,6 +93,14 @@ class MainNavigationDelegate(
 		return true
 	}
 
+	private fun getItemId(fragment: Fragment) = when (fragment) {
+		is ShelfFragment -> R.id.nav_shelf
+		is ExploreFragment -> R.id.nav_explore
+		is FeedFragment -> R.id.nav_feed
+		is ToolsFragment -> R.id.nav_tools
+		else -> 0
+	}
+
 	private fun setPrimaryFragment(fragment: Fragment) {
 		fragmentManager.beginTransaction()
 			.setReorderingAllowed(true)

app/src/main/java/org/koitharu/kotatsu/settings/tools/ToolsFragment.kt

@@ -16,7 +16,6 @@ import androidx.core.view.isVisible
 import androidx.core.view.updatePadding
 import androidx.core.widget.TextViewCompat
 import androidx.fragment.app.viewModels
-import com.google.android.material.R as materialR
 import com.google.android.material.color.MaterialColors
 import dagger.hilt.android.AndroidEntryPoint
 import org.koitharu.kotatsu.R
@@ -30,6 +29,7 @@ import org.koitharu.kotatsu.settings.about.AppUpdateDialog
 import org.koitharu.kotatsu.settings.tools.model.StorageUsage
 import org.koitharu.kotatsu.utils.FileSize
 import org.koitharu.kotatsu.utils.ext.getThemeColor
+import com.google.android.material.R as materialR
 
 @AndroidEntryPoint
 class ToolsFragment :
@@ -48,6 +48,7 @@ class ToolsFragment :
 		binding.buttonSettings.setOnClickListener(this)
 		binding.buttonDownloads.setOnClickListener(this)
 		binding.cardUpdate.root.setOnClickListener(this)
+		binding.cardUpdate.buttonChangelog.setOnClickListener(this)
 		binding.cardUpdate.buttonDownload.setOnClickListener(this)
 		binding.switchIncognito.setOnCheckedChangeListener(this)
 
@@ -69,10 +70,13 @@ class ToolsFragment :
 				intent.data = url.toUri()
 				startActivity(Intent.createChooser(intent, getString(R.string.open_in_browser)))
 			}
+
 			R.id.card_update -> {
 				val version = viewModel.appUpdate.value ?: return
 				AppUpdateDialog(v.context).show(version)
 			}
+
+			R.id.button_changelog -> showChangelog()
 		}
 	}
 
@@ -141,6 +145,13 @@ class ToolsFragment :
 		return MaterialColors.harmonize(color, backgroundColor)
 	}
 
+	private fun showChangelog() {
+		TransitionManager.beginDelayedTransition(binding.cardUpdate.root)
+		binding.cardUpdate.buttonChangelog.isVisible = false
+		binding.cardUpdate.textSecondary.isVisible = true
+		binding.cardUpdate.textChangelog.isVisible = true
+	}
+
 	companion object {
 
 		fun newInstance() = ToolsFragment()