Swipe to reply in timeline (lab)

CHANGES.md

@@ -7,6 +7,8 @@ Features:
 
 Improvements:
  - Handle click on redacted events: view source and create permalink
+ - Improve long tap menu: reply on top, more compact (#368)
+ - Quick reply in timeline with swipe gesture
 
 Other changes:
  -

vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailFragment.kt

@@ -37,9 +37,11 @@ import androidx.annotation.DrawableRes
 import androidx.appcompat.app.AlertDialog
 import androidx.core.content.ContextCompat
 import androidx.lifecycle.ViewModelProviders
+import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import butterknife.BindView
+import com.airbnb.epoxy.EpoxyModel
 import com.airbnb.epoxy.EpoxyVisibilityTracker
 import com.airbnb.mvrx.args
 import com.airbnb.mvrx.fragmentViewModel
@@ -57,6 +59,7 @@ import im.vector.matrix.android.api.session.Session
 import im.vector.matrix.android.api.session.room.model.EditAggregatedSummary
 import im.vector.matrix.android.api.session.room.model.Membership
 import im.vector.matrix.android.api.session.room.model.message.*
+import im.vector.matrix.android.api.session.room.send.SendState
 import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
 import im.vector.matrix.android.api.session.room.timeline.getLastMessageContent
 import im.vector.matrix.android.api.session.user.model.User
@@ -87,7 +90,7 @@ import im.vector.riotx.features.home.room.detail.composer.TextComposerViewState
 import im.vector.riotx.features.home.room.detail.timeline.TimelineEventController
 import im.vector.riotx.features.home.room.detail.timeline.action.*
 import im.vector.riotx.features.home.room.detail.timeline.helper.EndlessRecyclerViewScrollListener
-import im.vector.riotx.features.home.room.detail.timeline.item.MessageInformationData
+import im.vector.riotx.features.home.room.detail.timeline.item.*
 import im.vector.riotx.features.html.EventHtmlRenderer
 import im.vector.riotx.features.html.PillImageSpan
 import im.vector.riotx.features.invite.VectorInviteView
@@ -323,6 +326,32 @@ class RoomDetailFragment :
                 })
         recyclerView.setController(timelineEventController)
         timelineEventController.callback = this
+
+        if (VectorPreferences.swipeToReplyIsEnabled(requireContext())) {
+            val swipeCallback = RoomMessageTouchHelperCallback(requireContext(),
+                    R.drawable.ic_reply,
+                    object : RoomMessageTouchHelperCallback.QuickReplayHandler {
+                        override fun performQuickReplyOnHolder(model: EpoxyModel<*>) {
+                            (model as? AbsMessageItem)?.informationData?.let {
+                                val eventId = it.eventId
+                                roomDetailViewModel.process(RoomDetailActions.EnterReplyMode(eventId))
+                            }
+                        }
+
+                        override fun canSwipeModelModel(model: EpoxyModel<*>): Boolean {
+                            return when (model) {
+                                is MessageFileItem,
+                                is MessageImageVideoItem,
+                                is MessageTextItem -> {
+                                    return (model as AbsMessageItem).informationData.sendState == SendState.SYNCED
+                                }
+                                else               -> false
+                            }
+                        }
+                    })
+            val touchHelper = ItemTouchHelper(swipeCallback)
+            touchHelper.attachToRecyclerView(recyclerView)
+        }
     }
 
     private fun setupComposer() {

vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomMessageTouchHelperCallback.kt

@@ -0,0 +1,206 @@
+/*
+ * Copyright 2019 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.riotx.features.home.room.detail
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.drawable.Drawable
+import android.util.TypedValue
+import android.view.HapticFeedbackConstants
+import android.view.MotionEvent
+import android.view.View
+import androidx.annotation.DrawableRes
+import androidx.core.content.ContextCompat
+import androidx.recyclerview.widget.ItemTouchHelper
+import androidx.recyclerview.widget.ItemTouchHelper.ACTION_STATE_SWIPE
+import androidx.recyclerview.widget.RecyclerView
+import com.airbnb.epoxy.EpoxyModel
+import com.airbnb.epoxy.EpoxyTouchHelperCallback
+import com.airbnb.epoxy.EpoxyViewHolder
+import timber.log.Timber
+
+
+class RoomMessageTouchHelperCallback(private val context: Context,
+                                     @DrawableRes actionIcon: Int,
+                                     private val handler: QuickReplayHandler) : EpoxyTouchHelperCallback() {
+
+    interface QuickReplayHandler {
+        fun performQuickReplyOnHolder(model: EpoxyModel<*>)
+        fun canSwipeModelModel(model: EpoxyModel<*>): Boolean
+    }
+
+    private var swipeBack: Boolean = false
+    private var dX = 0f
+    private var startTracking = false
+    private var isVibrate = false
+
+    private var replyButtonProgress: Float = 0F
+    private var lastReplyButtonAnimationTime: Long = 0
+
+    private var imageDrawable: Drawable = ContextCompat.getDrawable(context, actionIcon)!!
+
+
+    private val triggerDistance = convertToPx(100)
+    private val minShowDistance = convertToPx(20)
+    private val triggerDelta = convertToPx(20)
+
+    override fun onSwiped(viewHolder: EpoxyViewHolder?, direction: Int) {
+
+    }
+
+    override fun onMove(recyclerView: RecyclerView?, viewHolder: EpoxyViewHolder?, target: EpoxyViewHolder?): Boolean {
+        return false
+    }
+
+    override fun getMovementFlags(recyclerView: RecyclerView, viewHolder: EpoxyViewHolder): Int {
+        if (handler.canSwipeModelModel(viewHolder.model)) {
+            return ItemTouchHelper.Callback.makeMovementFlags(0, ItemTouchHelper.START) //Should we use Left?
+        } else {
+            return 0
+        }
+    }
+
+
+    //We never let items completely go out
+    override fun convertToAbsoluteDirection(flags: Int, layoutDirection: Int): Int {
+        if (swipeBack) {
+            swipeBack = false;
+            return 0;
+        }
+        return super.convertToAbsoluteDirection(flags, layoutDirection);
+    }
+
+    override fun onChildDraw(c: Canvas, recyclerView: RecyclerView, viewHolder: EpoxyViewHolder, dX: Float, dY: Float, actionState: Int, isCurrentlyActive: Boolean) {
+        if (actionState == ACTION_STATE_SWIPE) {
+            setTouchListener(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
+        }
+        val size = triggerDistance
+        if (Math.abs(viewHolder.itemView.translationX) < size || dX > this.dX /*going back*/) {
+            super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive)
+            this.dX = dX
+            startTracking = true
+        }
+        drawReplyButton(c, viewHolder.itemView)
+    }
+
+
+    @SuppressLint("ClickableViewAccessibility")
+    private fun setTouchListener(c: Canvas,
+                                 recyclerView: RecyclerView,
+                                 viewHolder: EpoxyViewHolder,
+                                 dX: Float, dY: Float,
+                                 actionState: Int, isCurrentlyActive: Boolean) {
+        //TODO can this interfer with other interactions? should i remove it
+        recyclerView.setOnTouchListener { v, event ->
+            swipeBack = event.action == MotionEvent.ACTION_CANCEL || event.action == MotionEvent.ACTION_UP
+            if (swipeBack) {
+                if (Math.abs(dX) >= triggerDistance) {
+                    try {
+                        viewHolder.model?.let { handler.performQuickReplyOnHolder(it) }
+                    } catch (e: IllegalStateException) {
+                        Timber.e(e)
+                    }
+                }
+            }
+            false
+        }
+    }
+
+
+    private fun drawReplyButton(canvas: Canvas, itemView: View) {
+
+        Timber.v("drawReplyButton")
+        val translationX = Math.abs(itemView.translationX)
+        val newTime = System.currentTimeMillis()
+        val dt = Math.min(17, newTime - lastReplyButtonAnimationTime)
+        lastReplyButtonAnimationTime = newTime
+        val showing = translationX >= minShowDistance
+        if (showing) {
+            if (replyButtonProgress < 1.0f) {
+                replyButtonProgress += dt / 180.0f
+                if (replyButtonProgress > 1.0f) {
+                    replyButtonProgress = 1.0f
+                } else {
+                    itemView.invalidate()
+                }
+            }
+        } else if (translationX <= 0.0f) {
+            replyButtonProgress = 0f
+            startTracking = false
+            isVibrate = false
+        } else {
+            if (replyButtonProgress > 0.0f) {
+                replyButtonProgress -= dt / 180.0f
+                if (replyButtonProgress < 0.1f) {
+                    replyButtonProgress = 0f
+                } else {
+                    itemView.invalidate()
+                }
+            }
+        }
+        val alpha: Int
+        val scale: Float
+        if (showing) {
+            scale = if (replyButtonProgress <= 0.8f) {
+                1.2f * (replyButtonProgress / 0.8f)
+            } else {
+                1.2f - 0.2f * ((replyButtonProgress - 0.8f) / 0.2f)
+            }
+            alpha = Math.min(255f, 255 * (replyButtonProgress / 0.8f)).toInt()
+        } else {
+            scale = replyButtonProgress
+            alpha = Math.min(255f, 255 * replyButtonProgress).toInt()
+        }
+
+        imageDrawable.alpha = alpha
+        if (startTracking) {
+            if (!isVibrate && translationX >= triggerDistance) {
+                itemView.performHapticFeedback(
+                        HapticFeedbackConstants.LONG_PRESS
+//                        , HapticFeedbackConstants.FLAG_IGNORE_GLOBAL_SETTING
+                )
+                isVibrate = true
+            }
+        }
+
+        val x: Int = itemView.width - if (translationX > triggerDistance + triggerDelta) {
+            (convertToPx(130) / 2).toInt()
+        } else {
+            (translationX / 2).toInt()
+        }
+
+        val y = (itemView.top + itemView.measuredHeight / 2).toFloat()
+        //magic numbers?
+        imageDrawable.setBounds(
+                (x - convertToPx(12) * scale).toInt(),
+                (y - convertToPx(11) * scale).toInt(),
+                (x + convertToPx(12) * scale).toInt(),
+                (y + convertToPx(10) * scale).toInt()
+        )
+        imageDrawable.draw(canvas)
+        imageDrawable.alpha = 255
+    }
+
+    private fun convertToPx(dp: Int): Float {
+        return TypedValue.applyDimension(
+                TypedValue.COMPLEX_UNIT_DIP,
+                dp.toFloat(),
+                context.resources.displayMetrics
+        )
+    }
+
+}

vector/src/main/java/im/vector/riotx/features/settings/VectorPreferences.kt

@@ -148,6 +148,7 @@ object VectorPreferences {
     private const val SETTINGS_ENABLE_SEND_VOICE_FEATURE_PREFERENCE_KEY = "SETTINGS_ENABLE_SEND_VOICE_FEATURE_PREFERENCE_KEY"
 
     private const val SETTINGS_LABS_SHOW_HIDDEN_EVENTS_PREFERENCE_KEY = "SETTINGS_LABS_SHOW_HIDDEN_EVENTS_PREFERENCE_KEY"
+    private const val SETTINGS_LABS_ENABLE_SWIPE_TO_REPLY = "SETTINGS_LABS_ENABLE_SWIPE_TO_REPLY"
 
     // analytics
     const val SETTINGS_USE_ANALYTICS_KEY = "SETTINGS_USE_ANALYTICS_KEY"
@@ -249,6 +250,10 @@ object VectorPreferences {
         return PreferenceManager.getDefaultSharedPreferences(context).getBoolean(SETTINGS_LABS_SHOW_HIDDEN_EVENTS_PREFERENCE_KEY, false)
     }
 
+    fun swipeToReplyIsEnabled(context: Context): Boolean {
+        return PreferenceManager.getDefaultSharedPreferences(context).getBoolean(SETTINGS_LABS_ENABLE_SWIPE_TO_REPLY, true)
+    }
+
     /**
      * Tells if we have already asked the user to disable battery optimisations on android >= M devices.
      *

vector/src/main/res/values/strings_riotX.xml

@@ -32,4 +32,5 @@
     <string name="room_filtering_footer_open_room_directory">View the room directory</string>
 
 
+    <string name="labs_swipe_to_reply_in_timeline">Enable swipe to reply in timeline</string>
 </resources>

vector/src/main/res/xml/vector_settings_labs.xml

@@ -1,7 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.preference.PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.preference.PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools">
 
     <!--<im.vector.riotx.core.preference.VectorPreferenceCategory-->
     <!--android:key="SETTINGS_LABS_PREFERENCE_KEY"-->
@@ -37,10 +35,16 @@
     <!--android:title="@string/settings_labs_enable_send_voice" />-->
 
     <im.vector.riotx.core.preference.VectorSwitchPreference
-            android:key="SETTINGS_LABS_SHOW_HIDDEN_EVENTS_PREFERENCE_KEY"
         android:defaultValue="false"
+        android:key="SETTINGS_LABS_SHOW_HIDDEN_EVENTS_PREFERENCE_KEY"
         android:title="@string/settings_labs_show_hidden_events_in_timeline" />
 
+
+    <im.vector.riotx.core.preference.VectorSwitchPreference
+        android:defaultValue="true"
+        android:key="SETTINGS_LABS_ENABLE_SWIPE_TO_REPLY"
+        android:title="@string/labs_swipe_to_reply_in_timeline" />
+
     <!--</im.vector.riotx.core.preference.VectorPreferenceCategory>-->
 
 </androidx.preference.PreferenceScreen>