Allow users to remove viewers directly from stories.

app/src/main/java/org/thoughtcrime/securesms/stories/viewer/views/StoryViewItem.kt

@@ -1,9 +1,13 @@
 package org.thoughtcrime.securesms.stories.viewer.views
 
 import android.view.View
+import android.view.ViewGroup
 import android.widget.TextView
+import org.signal.core.util.DimensionUnit
 import org.thoughtcrime.securesms.R
 import org.thoughtcrime.securesms.components.AvatarImageView
+import org.thoughtcrime.securesms.components.menu.ActionItem
+import org.thoughtcrime.securesms.components.menu.SignalContextMenu
 import org.thoughtcrime.securesms.components.settings.PreferenceModel
 import org.thoughtcrime.securesms.util.DateUtils
 import org.thoughtcrime.securesms.util.adapter.mapping.LayoutFactory
@@ -21,7 +25,10 @@ object StoryViewItem {
   }
 
   class Model(
-    val storyViewItemData: StoryViewItemData
+    val storyViewItemData: StoryViewItemData,
+    val canRemoveMember: Boolean,
+    val goToChat: (Model) -> Unit,
+    val removeFromStory: (Model) -> Unit
   ) : PreferenceModel<Model>() {
     override fun areItemsTheSame(newItem: Model): Boolean {
       return storyViewItemData.recipient == newItem.storyViewItemData.recipient
@@ -30,6 +37,7 @@ object StoryViewItem {
     override fun areContentsTheSame(newItem: Model): Boolean {
       return storyViewItemData == newItem.storyViewItemData &&
         storyViewItemData.recipient.hasSameContent(newItem.storyViewItemData.recipient) &&
+        canRemoveMember == newItem.canRemoveMember &&
         super.areContentsTheSame(newItem)
     }
   }
@@ -44,10 +52,47 @@ object StoryViewItem {
       avatarView.setAvatar(model.storyViewItemData.recipient)
       nameView.text = model.storyViewItemData.recipient.getDisplayName(context)
       viewedAtView.text = formatDate(model.storyViewItemData.timeViewedInMillis)
+
+      itemView.setOnClickListener {
+        showContextMenu(model)
+      }
     }
 
     private fun formatDate(dateInMilliseconds: Long): String {
       return DateUtils.formatDateWithDayOfWeek(Locale.getDefault(), dateInMilliseconds)
     }
+
+    private fun showContextMenu(model: Model) {
+      itemView.isSelected = true
+
+      val actions = mutableListOf<ActionItem>()
+
+      actions.add(
+        ActionItem(
+          iconRes = R.drawable.ic_open_24_tinted,
+          title = context.getString(R.string.StoriesLandingItem__go_to_chat),
+          action = {
+            model.goToChat(model)
+          }
+        )
+      )
+
+      if (model.canRemoveMember) {
+        actions.add(
+          ActionItem(
+            iconRes = R.drawable.ic_minus_circle_20,
+            title = context.getString(R.string.StoryViewItem__remove_viewer),
+            action = {
+              model.removeFromStory(model)
+            }
+          )
+        )
+      }
+
+      SignalContextMenu.Builder(itemView, itemView.rootView as ViewGroup)
+        .offsetY(DimensionUnit.DP.toPixels(16f).toInt())
+        .onDismiss { itemView.isSelected = false }
+        .show(actions)
+    }
   }
 }

app/src/main/java/org/thoughtcrime/securesms/stories/viewer/views/StoryViewsFragment.kt

@@ -4,12 +4,15 @@ import android.os.Bundle
 import android.view.View
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.viewModels
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import org.thoughtcrime.securesms.R
 import org.thoughtcrime.securesms.components.settings.DSLConfiguration
 import org.thoughtcrime.securesms.components.settings.DSLSettingsAdapter
 import org.thoughtcrime.securesms.components.settings.DSLSettingsFragment
 import org.thoughtcrime.securesms.components.settings.app.AppSettingsActivity
 import org.thoughtcrime.securesms.components.settings.configure
+import org.thoughtcrime.securesms.conversation.ConversationIntents
+import org.thoughtcrime.securesms.recipients.Recipient
 import org.thoughtcrime.securesms.stories.viewer.reply.StoryViewsAndRepliesPagerChild
 import org.thoughtcrime.securesms.stories.viewer.reply.StoryViewsAndRepliesPagerParent
 import org.thoughtcrime.securesms.util.fragments.findListener
@@ -66,10 +69,35 @@ class StoryViewsFragment :
 
   private fun getConfiguration(state: StoryViewsState): DSLConfiguration {
     return configure {
-      state.views.forEach {
-        customPref(StoryViewItem.Model(it))
+      state.views.forEach { storyViewItemData ->
+        customPref(
+          StoryViewItem.Model(
+            storyViewItemData = storyViewItemData,
+            canRemoveMember = state.storyRecipient?.isDistributionList ?: false,
+            goToChat = {
+              val chatIntent = ConversationIntents.createBuilder(requireContext(), it.storyViewItemData.recipient.id, -1L).build()
+              startActivity(chatIntent)
+            },
+            removeFromStory = {
+              if (state.storyRecipient?.isDistributionList == true) {
+                confirmRemoveFromStory(it.storyViewItemData.recipient, state.storyRecipient)
               }
             }
+          )
+        )
+      }
+    }
+  }
+
+  private fun confirmRemoveFromStory(user: Recipient, story: Recipient) {
+    MaterialAlertDialogBuilder(requireContext())
+      .setTitle(R.string.StoryViewsFragment__remove_viewer)
+      .setMessage(getString(R.string.StoryViewsFragment__s_will_still_be_able, user.getShortDisplayName(requireContext()), story.getDisplayName(requireContext())))
+      .setPositiveButton(R.string.StoryViewsFragment__remove) { _, _ ->
+        viewModel.removeUserFromStory(user, story)
+      }
+      .setNegativeButton(android.R.string.cancel) { _, _ -> }
+      .show()
   }
 
   companion object {

app/src/main/java/org/thoughtcrime/securesms/stories/viewer/views/StoryViewsRepository.kt

@@ -1,7 +1,10 @@
 package org.thoughtcrime.securesms.stories.viewer.views
 
+import io.reactivex.rxjava3.core.Completable
 import io.reactivex.rxjava3.core.Observable
+import io.reactivex.rxjava3.core.Single
 import io.reactivex.rxjava3.schedulers.Schedulers
+import org.signal.core.util.logging.Log
 import org.thoughtcrime.securesms.database.DatabaseObserver
 import org.thoughtcrime.securesms.database.GroupReceiptDatabase
 import org.thoughtcrime.securesms.database.SignalDatabase
@@ -11,8 +14,20 @@ import org.thoughtcrime.securesms.util.TextSecurePreferences
 
 class StoryViewsRepository {
 
+  companion object {
+    private val TAG = Log.tag(StoryViewsRepository::class.java)
+  }
+
   fun isReadReceiptsEnabled(): Boolean = TextSecurePreferences.isReadReceiptsEnabled(ApplicationDependencies.getApplication())
 
+  fun getStoryRecipient(storyId: Long): Single<Recipient> {
+    return Single.fromCallable {
+      val record = SignalDatabase.mms.getMessageRecord(storyId)
+
+      record.recipient
+    }.subscribeOn(Schedulers.io())
+  }
+
   fun getViews(storyId: Long): Observable<List<StoryViewItemData>> {
     return Observable.create<List<StoryViewItemData>> { emitter ->
       fun refresh() {
@@ -38,4 +53,15 @@ class StoryViewsRepository {
       refresh()
     }.subscribeOn(Schedulers.io())
   }
+
+  fun removeUserFromStory(user: Recipient, story: Recipient): Completable {
+    return Completable.fromAction {
+      val distributionListRecord = SignalDatabase.distributionLists.getList(story.requireDistributionListId())!!
+      if (user.id in distributionListRecord.members) {
+        SignalDatabase.distributionLists.excludeFromStory(user.id, distributionListRecord)
+      } else {
+        Log.w(TAG, "User is no longer in the distribution list.")
+      }
+    }
+  }
 }

app/src/main/java/org/thoughtcrime/securesms/stories/viewer/views/StoryViewsState.kt

@@ -1,7 +1,10 @@
 package org.thoughtcrime.securesms.stories.viewer.views
 
+import org.thoughtcrime.securesms.recipients.Recipient
+
 data class StoryViewsState(
   val loadState: LoadState = LoadState.INIT,
+  val storyRecipient: Recipient? = null,
   val views: List<StoryViewItemData> = emptyList()
 ) {
   enum class LoadState {

app/src/main/java/org/thoughtcrime/securesms/stories/viewer/views/StoryViewsViewModel.kt

@@ -5,17 +5,24 @@ import androidx.lifecycle.ViewModel
 import androidx.lifecycle.ViewModelProvider
 import io.reactivex.rxjava3.disposables.CompositeDisposable
 import io.reactivex.rxjava3.kotlin.plusAssign
+import org.thoughtcrime.securesms.recipients.Recipient
 import org.thoughtcrime.securesms.util.livedata.Store
 
 class StoryViewsViewModel(private val storyId: Long, private val repository: StoryViewsRepository) : ViewModel() {
 
-  private val store = Store(StoryViewsState(StoryViewsState.LoadState.INIT))
+  private val store = Store(StoryViewsState())
   private val disposables = CompositeDisposable()
 
   val state: LiveData<StoryViewsState> = store.stateLiveData
 
   fun refresh() {
     if (repository.isReadReceiptsEnabled()) {
+      disposables += repository.getStoryRecipient(storyId).subscribe { storyRecipient ->
+        store.update {
+          it.copy(storyRecipient = storyRecipient)
+        }
+      }
+
       disposables += repository.getViews(storyId).subscribe { data ->
         store.update {
           it.copy(
@@ -37,6 +44,10 @@ class StoryViewsViewModel(private val storyId: Long, private val repository: Sto
     disposables.clear()
   }
 
+  fun removeUserFromStory(user: Recipient, story: Recipient) {
+    repository.removeUserFromStory(user, story).subscribe()
+  }
+
   class Factory(
     private val storyId: Long,
     private val repository: StoryViewsRepository

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

@@ -4,8 +4,10 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:layout_marginHorizontal="@dimen/dsl_settings_gutter"
-    android:minHeight="64dp">
+    android:layout_marginHorizontal="@dimen/selectable_list_item_margin"
+    android:background="@drawable/selectable_list_item_background"
+    android:minHeight="64dp"
+    android:paddingHorizontal="@dimen/selectable_list_item_padding">
 
     <org.thoughtcrime.securesms.components.AvatarImageView
         android:id="@+id/avatar"

app/src/main/res/values-sw360dp/dimens.xml

@@ -20,6 +20,8 @@
     <dimen name="media_overview_toggle_gutter">10dp</dimen>
     <dimen name="wallpaper_selection_gutter">16dp</dimen>
     <dimen name="safety_number_recipient_row_item_gutter">12dp</dimen>
+    <dimen name="selectable_list_item_margin">16dp</dimen>
+    <dimen name="selectable_list_item_padding">8dp</dimen>
 
     <dimen name="chat_colors_preview_bubble_max_width">260dp</dimen>
 

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

@@ -200,6 +200,8 @@
     <dimen name="media_overview_toggle_gutter">2dp</dimen>
     <dimen name="wallpaper_selection_gutter">8dp</dimen>
     <dimen name="safety_number_recipient_row_item_gutter">4dp</dimen>
+    <dimen name="selectable_list_item_margin">8dp</dimen>
+    <dimen name="selectable_list_item_padding">8dp</dimen>
 
     <dimen name="chat_colors_preview_bubble_max_width">240dp</dimen>
 

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

@@ -4628,6 +4628,14 @@
     <string name="StoryViewsFragment__enable_read_receipts_to_see_whos_viewed_your_story">Enable read receipts to see who\'s viewed your stories.</string>
     <!-- Button label displayed when user has disabled receipts -->
     <string name="StoryViewsFragment__go_to_settings">Go to settings</string>
+    <!-- Dialog action to remove viewer from a story -->
+    <string name="StoryViewsFragment__remove">Remove</string>
+    <!-- Dialog title when removing a viewer from a story -->
+    <string name="StoryViewsFragment__remove_viewer">Remove viewer?</string>
+    <!-- Dialog message when removing a viewer from a story -->
+    <string name="StoryViewsFragment__s_will_still_be_able">%1$s will still be able to view this post, but will not be able to view any future posts you share to %2$s.</string>
+    <!-- Story View context menu action to remove them from a story -->
+    <string name="StoryViewItem__remove_viewer">Remove viewer</string>
     <!-- Displayed when a story has no replies yet -->
     <string name="StoryGroupReplyFragment__no_replies_yet">No replies yet</string>
     <!-- Displayed for each user that reacted to a story when viewing replies -->