add loading screen

this also avoids to doubleclick on end poll button

Signed-off-by: Marcel Hibbe <dev@mhibbe.de>

app/src/main/java/com/nextcloud/talk/polls/ui/PollLoadingFragment.kt

@@ -0,0 +1,74 @@
+/*
+ * Nextcloud Talk application
+ *
+ * @author Marcel Hibbe
+ * Copyright (C) 2022 Marcel Hibbe <dev@mhibbe.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.nextcloud.talk.polls.ui
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.core.os.bundleOf
+import androidx.fragment.app.Fragment
+import autodagger.AutoInjector
+import com.nextcloud.talk.application.NextcloudTalkApplication
+import com.nextcloud.talk.databinding.DialogPollLoadingBinding
+
+@AutoInjector(NextcloudTalkApplication::class)
+class PollLoadingFragment : Fragment() {
+
+    private lateinit var binding: DialogPollLoadingBinding
+
+    var fragmentHeight = 0
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        NextcloudTalkApplication.sharedApplication!!.componentApplication.inject(this)
+        fragmentHeight = arguments?.getInt(KEY_FRAGMENT_HEIGHT)!!
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        binding = DialogPollLoadingBinding.inflate(inflater, container, false)
+        binding.root.layoutParams.height = fragmentHeight
+        return binding.root
+    }
+
+    companion object {
+        private val TAG = PollLoadingFragment::class.java.simpleName
+        private const val KEY_FRAGMENT_HEIGHT = "keyFragmentHeight"
+
+        @JvmStatic
+        fun newInstance(
+            fragmentHeight: Int
+        ): PollLoadingFragment {
+
+            val args = bundleOf(
+                KEY_FRAGMENT_HEIGHT to fragmentHeight,
+            )
+
+            val fragment = PollLoadingFragment()
+            fragment.arguments = args
+            return fragment
+        }
+    }
+}

app/src/main/java/com/nextcloud/talk/polls/ui/PollMainDialogFragment.kt

@@ -93,6 +93,9 @@ class PollMainDialogFragment : DialogFragment() {
                     initVotersAmount(state.showVotersAmount, state.poll.numVoters, true)
                     showResultsScreen()
                 }
+                is PollMainViewModel.LoadingState -> {
+                    showLoadingScreen()
+                }
                 is PollMainViewModel.DismissDialogState -> {
                     dismiss()
                 }
@@ -101,6 +104,19 @@ class PollMainDialogFragment : DialogFragment() {
         }
     }
 
+    private fun showLoadingScreen() {
+        binding.root.post {
+            run() {
+                val fragmentHeight = binding.messagePollContentFragment.measuredHeight
+
+                val contentFragment = PollLoadingFragment.newInstance(fragmentHeight)
+                val transaction = childFragmentManager.beginTransaction()
+                transaction.replace(binding.messagePollContentFragment.id, contentFragment)
+                transaction.commit()
+            }
+        }
+    }
+
     private fun showVoteScreen() {
         val contentFragment = PollVoteFragment.newInstance()
 

app/src/main/java/com/nextcloud/talk/polls/viewmodels/PollMainViewModel.kt

@@ -50,6 +50,8 @@ class PollMainViewModel @Inject constructor(private val repository: PollReposito
     sealed interface ViewState
     object InitialState : ViewState
     object DismissDialogState : ViewState
+    object LoadingState : ViewState
+
     open class PollVoteState(
         val poll: Poll,
         val showVotersAmount: Boolean,
@@ -94,6 +96,7 @@ class PollMainViewModel @Inject constructor(private val repository: PollReposito
     }
 
     private fun loadPoll() {
+        _viewState.value = LoadingState
         repository.getPoll(roomToken, pollId)
             .doOnSubscribe { disposable = it }
             ?.subscribeOn(Schedulers.io())
@@ -102,6 +105,7 @@ class PollMainViewModel @Inject constructor(private val repository: PollReposito
     }
 
     fun endPoll() {
+        _viewState.value = LoadingState
         repository.closePoll(roomToken, pollId)
             .doOnSubscribe { disposable = it }
             ?.subscribeOn(Schedulers.io())

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

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Nextcloud Talk application
+  ~
+  ~ @author Marcel Hibbe
+  ~ Copyright (C) 2022 Marcel Hibbe <dev@mhibbe.de>
+  ~
+  ~ This program is free software: you can redistribute it and/or modify
+  ~ it under the terms of the GNU General Public License as published by
+  ~ the Free Software Foundation, either version 3 of the License, or
+  ~ at your option) any later version.
+  ~
+  ~ This program is distributed in the hope that it will be useful,
+  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~ GNU General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License
+  ~ along with this program.  If not, see <http://www.gnu.org/licenses/>.
+  -->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:gravity="center"
+    tools:background="@color/white">
+
+    <ProgressBar
+        android:layout_width="25dp"
+        android:layout_height="25dp">
+    </ProgressBar>
+
+</LinearLayout>