feat: Delete rooms in the device connect fragment

app/src/main/java/org/fossasia/susi/ai/device/deviceconnect/DeviceConnectFragment.kt

@@ -164,7 +164,7 @@ class DeviceConnectFragment : Fragment(), IDeviceConnectView {
         }
         var layoutManager = LinearLayoutManager(context, LinearLayoutManager.VERTICAL, false)
         availableRoomsRecyclerView.layoutManager = layoutManager
-        availableRoomsAdapter = RoomsAdapter(availableRoomsList, context)
+        availableRoomsAdapter = RoomsAdapter(availableRoomsList, context, deviceConnectPresenter)
         availableRoomsRecyclerView.adapter = availableRoomsAdapter
     }
 

app/src/main/java/org/fossasia/susi/ai/device/deviceconnect/DeviceConnectPresenter.kt

@@ -98,6 +98,15 @@ class DeviceConnectPresenter(context: Context, manager: WifiManager) : IDeviceCo
         deviceConnectView?.showRooms()
     }
 
+    override fun deleteRoom(room: String?) {
+        realm = Realm.getDefaultInstance()
+        realm.beginTransaction()
+        val result = realm.where(RoomsAvailable::class.java).equalTo("room", room).findFirst()
+        result?.deleteFromRealm()
+        realm.commitTransaction()
+        deviceConnectView?.showRooms()
+    }
+
     override fun addDevice(queryObject: AddDeviceQuery) {
         roomModel.addDeviceToServer(queryObject)
     }

app/src/main/java/org/fossasia/susi/ai/device/deviceconnect/adapters/recycleradapters/RoomsAdapter.kt

@@ -7,13 +7,15 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import kotlinx.android.synthetic.main.room_recycler_layout.view.room_text
+import kotlinx.android.synthetic.main.room_recycler_layout.view.delete_room
 import org.fossasia.susi.ai.R
 import org.fossasia.susi.ai.device.DeviceActivity
 import org.fossasia.susi.ai.device.DeviceActivity.Companion.CONNECT_TO
 import org.fossasia.susi.ai.device.DeviceActivity.Companion.TAG_DEVICE_CONNECT_FRAGMENT
 import org.fossasia.susi.ai.device.deviceconnect.DeviceConnectFragment
+import org.fossasia.susi.ai.device.deviceconnect.contract.IDeviceConnectPresenter
 
-class RoomsAdapter(private val availableRoomsList: ArrayList<DeviceConnectFragment.AvailableRoomsFormat>, val context: Context?) : RecyclerView.Adapter<RoomsAdapter.ViewHolder>() {
+class RoomsAdapter(private val availableRoomsList: ArrayList<DeviceConnectFragment.AvailableRoomsFormat>, val context: Context?, private val deviceConnectPresenter: IDeviceConnectPresenter) : RecyclerView.Adapter<RoomsAdapter.ViewHolder>() {
 
     override fun onCreateViewHolder(viewGroup: ViewGroup, viewType: Int): ViewHolder {
         val view = LayoutInflater.from(viewGroup.context).inflate(R.layout.room_recycler_layout, viewGroup, false)
@@ -39,6 +41,10 @@ class RoomsAdapter(private val availableRoomsList: ArrayList<DeviceConnectFragme
                 intent.putExtra(CONNECT_TO, TAG_DEVICE_CONNECT_FRAGMENT)
                 context?.startActivity(intent)
             }
+
+            itemView.delete_room.setOnClickListener {
+                deviceConnectPresenter.deleteRoom(availableRoomsList[adapterPosition].room)
+            }
         }
     }
 }

app/src/main/java/org/fossasia/susi/ai/device/deviceconnect/contract/IDeviceConnectPresenter.kt

@@ -37,6 +37,8 @@ interface IDeviceConnectPresenter {
 
     fun addRoom(room: String)
 
+    fun deleteRoom(room: String?)
+
     fun addDevice(queryObject: AddDeviceQuery)
 
     fun getLocation()

app/src/main/res/drawable/ic_delete_black_24dp.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M6,19c0,1.1 0.9,2 2,2h8c1.1,0 2,-0.9 2,-2V7H6v12zM19,4h-3.5l-1,-1h-5l-1,1H5v2h14V4z"/>
+</vector>

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

@@ -7,16 +7,27 @@
 
     <ImageView
         android:id="@+id/image_tick"
-        android:layout_width="@dimen/width_room_recycler"
+        android:layout_width="@dimen/width_null"
         android:layout_height="@dimen/height_room_recycler"
+        android:layout_weight="1"
         android:layout_margin="@dimen/padding_large"
         app:srcCompat="@drawable/ic_home_black_24dp" />
 
     <TextView
         android:id="@+id/room_text"
-        android:layout_width="match_parent"
+        android:layout_width="@dimen/width_null"
+        android:layout_weight="4"
         android:layout_height="wrap_content"
         android:layout_margin="@dimen/padding_large"
         android:text="Living Room" />
 
+    <ImageButton
+        android:layout_width="@dimen/width_null"
+        android:layout_height="@dimen/height_room_recycler"
+        android:layout_weight="1"
+        android:id="@+id/delete_room"
+        android:layout_margin="@dimen/padding_large"
+        android:background="@color/susi_message_link_preview_bg"
+        app:srcCompat="@drawable/ic_delete_black_24dp"/>
+
 </LinearLayout>

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

@@ -17,6 +17,7 @@
 
     <!-- dimensions specifics -->
 
+    <dimen name="width_null">0dp</dimen>
     <dimen name="height_very_small">1dp</dimen>
     <dimen name="width_very_small">1dp</dimen>
     <dimen name="height_large">45dp</dimen>
@@ -137,4 +138,5 @@
     <dimen name="height_minimum">2dp</dimen>
     <dimen name="height_room_recycler">20dp</dimen>
     <dimen name="width_room_recycler">20dp</dimen>
+
 </resources>