Adding load more item at the end of the list of polls

library/ui-strings/src/main/res/values/strings.xml

@@ -3201,6 +3201,7 @@
     <string name="room_polls_active_no_item">There are no active polls in this room</string>
     <string name="room_polls_ended">Past polls</string>
     <string name="room_polls_ended_no_item">There are no past polls in this room</string>
+    <string name="room_polls_load_more">Load more polls</string>
 
     <!-- Location -->
     <string name="location_activity_title_static_sharing">Share location</string>

vector/src/main/java/im/vector/app/features/roomprofile/polls/list/RoomPollLoadMoreItem.kt

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2022 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.app.features.roomprofile.polls.list
+
+import android.widget.Button
+import com.airbnb.epoxy.EpoxyAttribute
+import com.airbnb.epoxy.EpoxyModelClass
+import im.vector.app.R
+import im.vector.app.core.epoxy.ClickListener
+import im.vector.app.core.epoxy.VectorEpoxyHolder
+import im.vector.app.core.epoxy.VectorEpoxyModel
+import im.vector.app.core.epoxy.onClick
+
+@EpoxyModelClass
+abstract class RoomPollLoadMoreItem : VectorEpoxyModel<RoomPollLoadMoreItem.Holder>(R.layout.item_poll_load_more) {
+
+    @EpoxyAttribute(EpoxyAttribute.Option.DoNotHash)
+    var clickListener: ClickListener? = null
+
+    override fun bind(holder: Holder) {
+        super.bind(holder)
+        holder.loadMoreButton.onClick(clickListener)
+    }
+
+    class Holder : VectorEpoxyHolder() {
+        val loadMoreButton by bind<Button>(R.id.roomPollsLoadMore)
+    }
+}

vector/src/main/java/im/vector/app/features/roomprofile/polls/list/RoomPollsController.kt

@@ -31,6 +31,7 @@ class RoomPollsController @Inject constructor(
 
     interface Listener {
         fun onPollClicked(pollId: String)
+        fun onLoadMoreClicked()
     }
 
     var listener: Listener? = null
@@ -46,6 +47,8 @@ class RoomPollsController @Inject constructor(
                 is PollSummary.EndedPoll -> buildEndedPollItem(poll)
             }
         }
+
+        buildLoadMoreItem()
     }
 
     private fun buildActivePollItem(poll: PollSummary.ActivePoll) {
@@ -73,4 +76,12 @@ class RoomPollsController @Inject constructor(
             }
         }
     }
+
+    private fun buildLoadMoreItem() {
+        val host = this
+        roomPollLoadMoreItem {
+            id("roomPollLoadMore")
+            host.listener?.onLoadMoreClicked()
+        }
+    }
 }

vector/src/main/java/im/vector/app/features/roomprofile/polls/list/RoomPollsListFragment.kt

@@ -33,6 +33,8 @@ import im.vector.app.features.roomprofile.polls.RoomPollsViewModel
 import timber.log.Timber
 import javax.inject.Inject
 
+// TODO add and render blocking loader view
+// TODO add and render missing empty view when load more is possible
 abstract class RoomPollsListFragment :
         VectorBaseFragment<FragmentRoomPollsListBinding>(),
         RoomPollsController.Listener {
@@ -87,4 +89,8 @@ abstract class RoomPollsListFragment :
         // TODO navigate to details
         Timber.d("poll with id $pollId clicked")
     }
+
+    override fun onLoadMoreClicked() {
+        // TODO call viewAction
+    }
 }

vector/src/main/res/layout/item_poll_load_more.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <Button
+        android:id="@+id/roomPollsLoadMore"
+        style="@style/Widget.Vector.Button.Text"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="38dp"
+        android:layout_marginBottom="46dp"
+        android:padding="0dp"
+        android:text="@string/room_polls_load_more"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <ProgressBar
+        android:id="@+id/roomPollsLoadMoreProgress"
+        style="?android:attr/progressBarStyle"
+        android:layout_width="16dp"
+        android:layout_height="16dp"
+        android:layout_marginStart="9dp"
+        app:layout_constraintBottom_toBottomOf="@id/roomPollsLoadMore"
+        app:layout_constraintStart_toEndOf="@id/roomPollsLoadMore"
+        app:layout_constraintTop_toTopOf="@id/roomPollsLoadMore" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>