Add a go to button if there is an object for the addon

app/src/main/java/space/celestia/mobilecelestia/MainActivity.kt

@@ -66,6 +66,7 @@ import space.celestia.mobilecelestia.loading.LoadingFragment
 import space.celestia.mobilecelestia.resource.AsyncListFragment
 import space.celestia.mobilecelestia.resource.DestinationDetailFragment
 import space.celestia.mobilecelestia.resource.ResourceFragment
+import space.celestia.mobilecelestia.resource.ResourceItemFragment
 import space.celestia.mobilecelestia.resource.model.ResourceCategory
 import space.celestia.mobilecelestia.resource.model.ResourceItem
 import space.celestia.mobilecelestia.resource.model.ResourceManager
@@ -115,7 +116,8 @@ class MainActivity : AppCompatActivity(R.layout.activity_main),
     ResourceFragment.Listener,
     AsyncListFragment.Listener<Any>,
     DestinationDetailFragment.Listener,
-    GoToInputFragment.Listener {
+    GoToInputFragment.Listener,
+    ResourceItemFragment.Listener {
 
     private val preferenceManager by lazy { PreferenceManager(this, "celestia") }
     private val settingManager by lazy { PreferenceManager(this, "celestia_setting") }
@@ -924,6 +926,22 @@ class MainActivity : AppCompatActivity(R.layout.activity_main),
         CelestiaView.callOnRenderThread { core.charEnter(item.value) }
     }
 
+    override fun objectExistsWithName(name: String): Boolean {
+        return !core.simulation.findObject(name).isEmpty
+    }
+
+    override fun onGoToObject(name: String) {
+        val sel = core.simulation.findObject(name)
+        if (sel.isEmpty) {
+            showAlert(CelestiaString("Object not found", ""))
+            return
+        }
+        CelestiaView.callOnRenderThread {
+            core.simulation.selection = sel
+            core.charEnter(CelestiaAction.GoTo.value)
+        }
+    }
+
     override fun onBottomControlHide() {
         hideOverlay(true)
     }

app/src/main/java/space/celestia/mobilecelestia/info/InfoFragment.kt

@@ -67,7 +67,7 @@ class InfoFragment : NavigationFragment.SubFragment() {
     override fun onCreateView(
         inflater: LayoutInflater, container: ViewGroup?,
         savedInstanceState: Bundle?
-    ): View? {
+    ): View {
         recyclerView = inflater.inflate(R.layout.fragment_info_list, container, false) as RecyclerView
 
         if (embeddedInNavigation)

app/src/main/java/space/celestia/mobilecelestia/resource/ResourceItemFragment.kt

@@ -11,6 +11,7 @@
 
 package space.celestia.mobilecelestia.resource
 
+import android.content.Context
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
@@ -42,6 +43,8 @@ class ResourceItemFragment : NavigationFragment.SubFragment(), ResourceManager.L
     private var item: ResourceItem? = null
     private lateinit var progressView: ProgressView
     private lateinit var progressViewText: TextView
+    private lateinit var goToButtonContainer: View
+    private lateinit var goToButtonTextView: TextView
     private var currentState: ResourceItemState = ResourceItemState.None
 
     private var imageView: ImageView? = null
@@ -50,8 +53,15 @@ class ResourceItemFragment : NavigationFragment.SubFragment(), ResourceManager.L
     private var authorsLabel: TextView? = null
     private var releaseDateLabel: TextView? = null
 
+    private var listener: Listener? = null
+
     private val formatter = DateFormat.getDateInstance(DateFormat.MEDIUM, Locale.getDefault())
 
+    interface Listener {
+        fun objectExistsWithName(name: String): Boolean
+        fun onGoToObject(name: String)
+    }
+
     class GlideUrlCustomCacheKey(url: String, val key: String) : GlideUrl(url) {
         override fun getCacheKey(): String {
             return key
@@ -95,6 +105,10 @@ class ResourceItemFragment : NavigationFragment.SubFragment(), ResourceManager.L
         this.imageView = image
         this.authorsLabel = authors
         this.releaseDateLabel = releaseDate
+        goToButtonContainer = view.findViewById(R.id.button_container)
+        goToButtonTextView = view.findViewById(R.id.button)
+        goToButtonTextView.text = CelestiaString("Go", "")
+        goToButtonContainer.visibility = View.GONE
         updateContents()
         updateUI()
 
@@ -120,6 +134,20 @@ class ResourceItemFragment : NavigationFragment.SubFragment(), ResourceManager.L
         }
     }
 
+    override fun onAttach(context: Context) {
+        super.onAttach(context)
+        if (context is Listener) {
+            listener = context
+        } else {
+            throw RuntimeException("$context must implement ResourceItemFragment.Listener")
+        }
+    }
+
+    override fun onDetach() {
+        super.onDetach()
+        listener = null
+    }
+
     override fun onDestroy() {
         ResourceManager.shared.removeListener(this)
 
@@ -225,13 +253,13 @@ class ResourceItemFragment : NavigationFragment.SubFragment(), ResourceManager.L
     }
 
     private fun updateUI() {
-        val id = item?.id ?: return
+        val item = this.item ?: return
 
         // Ensure we are up to date with these cases
         val dm = ResourceManager.shared
-        if (dm.isInstalled(id))
+        if (dm.isInstalled(item.id))
             currentState = ResourceItemState.Installed
-        if (dm.isDownloading(id))
+        if (dm.isDownloading(item.id))
             currentState = ResourceItemState.Downloading
 
         when (currentState) {
@@ -247,6 +275,16 @@ class ResourceItemFragment : NavigationFragment.SubFragment(), ResourceManager.L
                 progressViewText.text = CelestiaString("INSTALLED", "")
             }
         }
+
+        val objectName = item.objectName
+        if (currentState == ResourceItemState.Installed && objectName != null && listener?.objectExistsWithName(objectName) == true) {
+            goToButtonContainer.visibility = View.VISIBLE
+            goToButtonContainer.setOnClickListener {
+                listener?.onGoToObject(objectName)
+            }
+        } else {
+            goToButtonContainer.visibility = View.GONE
+        }
     }
 
     companion object {

app/src/main/java/space/celestia/mobilecelestia/resource/model/ResourceItem.kt

@@ -21,4 +21,5 @@ class ResourceItem(val id: String,
                    val item: String,
                    val image: String?,
                    val authors: List<String>?,
-                   val publishTime: Date?): AsyncListTextItem, Serializable
+                   val publishTime: Date?,
+                   val objectName: String?): AsyncListTextItem, Serializable

app/src/main/res/layout/fragment_resource_item.xml

@@ -76,6 +76,12 @@
         android:layout_width="wrap_content"
         android:layout_height="8dp"/>
 
+    <include layout="@layout/common_action_button"
+        android:id="@+id/button_container"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="8dp"/>
+
     <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
         android:layout_width="match_parent"
         android:layout_height="wrap_content">

app/src/main/res/values/colors.xml

@@ -39,6 +39,6 @@
     <color name="colorPrimaryDark">@color/colorThemeSecondaryLabel</color>
     <color name="colorAccent">@color/colorThemeLabel</color>
 
-    <color name="colorProgressForeground">#4477AA</color>
-    <color name="colorProgressBackground">@color/colorThemeSecondaryLabel</color>
+    <color name="colorProgressForeground">@color/colorThemeBackground</color>
+    <color name="colorProgressBackground">#80114477</color>
 </resources>