Add support for accessibility navigation gestures (TalkBack)

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## Changed
 
 - #1369 Add content descriptions to drag handles and custom "Move up"/"Move down" accessibility actions for trigger and action list items, improving TalkBack support for reordering.
+- #262 Add "TalkBack gesture" action to simulate TalkBack navigation gestures (swipes, multi-finger taps, and multi-directional swipes).
 
 ## [4.1.1](https://github.com/sds100/KeyMapper/releases/tag/v4.1.1)
 

base/src/main/java/io/github/sds100/keymapper/base/actions/ActionData.kt

@@ -1,5 +1,6 @@
 package io.github.sds100.keymapper.base.actions
 
+import io.github.sds100.keymapper.base.actions.talkback.TalkBackGestureType
 import io.github.sds100.keymapper.common.models.ShellExecutionMode
 import io.github.sds100.keymapper.common.utils.NodeInteractionType
 import io.github.sds100.keymapper.common.utils.Orientation
@@ -95,6 +96,7 @@ sealed class ActionData : Comparable<ActionData> {
                     { it.showVolumeUi },
                     { it.volumeStream },
                 )
+
                 else -> super.compareTo(other)
             }
         }
@@ -111,6 +113,7 @@ sealed class ActionData : Comparable<ActionData> {
                     { it.showVolumeUi },
                     { it.volumeStream },
                 )
+
                 else -> super.compareTo(other)
             }
         }
@@ -1040,6 +1043,17 @@ sealed class ActionData : Comparable<ActionData> {
                 { it.settingKey },
                 { it.value },
             )
+
+            else -> super.compareTo(other)
+        }
+    }
+
+    @Serializable
+    data class TalkBackGesture(val gesture: TalkBackGestureType) : ActionData() {
+        override val id: ActionId = ActionId.TALKBACK_GESTURE
+
+        override fun compareTo(other: ActionData) = when (other) {
+            is TalkBackGesture -> gesture.compareTo(other.gesture)
             else -> super.compareTo(other)
         }
     }

base/src/main/java/io/github/sds100/keymapper/base/actions/ActionDataEntityMapper.kt

@@ -2,6 +2,7 @@ package io.github.sds100.keymapper.base.actions
 
 import android.util.Base64
 import androidx.core.net.toUri
+import io.github.sds100.keymapper.base.actions.talkback.TalkBackGestureType
 import io.github.sds100.keymapper.common.models.ShellExecutionMode
 import io.github.sds100.keymapper.common.utils.KMError
 import io.github.sds100.keymapper.common.utils.KMResult
@@ -69,6 +70,7 @@ object ActionDataEntityMapper {
             ActionEntity.Type.MODIFY_SETTING -> ActionId.MODIFY_SETTING
 
             ActionEntity.Type.CREATE_NOTIFICATION -> ActionId.CREATE_NOTIFICATION
+
             ActionEntity.Type.TOAST -> ActionId.TOAST
         }
 
@@ -874,6 +876,20 @@ object ActionDataEntityMapper {
 
             ActionId.CLEAR_RECENT_APP -> ActionData.ClearRecentApp
 
+            ActionId.TALKBACK_GESTURE -> {
+                val gestureTypeString =
+                    entity.extras.getData(ActionEntity.EXTRA_TALKBACK_GESTURE_TYPE)
+                        .valueOrNull() ?: return null
+
+                val gestureType = try {
+                    TalkBackGestureType.valueOf(gestureTypeString)
+                } catch (_: IllegalArgumentException) {
+                    return null
+                }
+
+                ActionData.TalkBackGesture(gesture = gestureType)
+            }
+
             ActionId.MODIFY_SETTING -> {
                 val value = entity.extras.getData(ActionEntity.EXTRA_SETTING_VALUE)
                     .valueOrNull() ?: return null
@@ -1324,6 +1340,10 @@ object ActionDataEntityMapper {
             EntityExtra(ActionEntity.EXTRA_TOAST_DURATION, data.duration.name),
         )
 
+        is ActionData.TalkBackGesture -> listOf(
+            EntityExtra(ActionEntity.EXTRA_TALKBACK_GESTURE_TYPE, data.gesture.name),
+        )
+
         else -> emptyList()
     }
 
@@ -1510,5 +1530,7 @@ object ActionDataEntityMapper {
         ActionId.CLEAR_RECENT_APP to "clear_recent_app",
 
         ActionId.MODIFY_SETTING to "modify_setting",
+
+        ActionId.TALKBACK_GESTURE to "talkback_gesture",
     )
 }

base/src/main/java/io/github/sds100/keymapper/base/actions/ActionErrorSnapshot.kt

@@ -265,6 +265,10 @@ class LazyActionErrorSnapshot(
                 }
             }
 
+            is ActionData.TalkBackGesture -> {
+                return getAppError(TALKBACK_PACKAGE_NAME)
+            }
+
             else -> {}
         }
 
@@ -317,3 +321,5 @@ interface ActionErrorSnapshot {
     fun getError(action: ActionData): KMError?
     fun getErrors(actions: List<ActionData>): Map<ActionData, KMError?>
 }
+
+private const val TALKBACK_PACKAGE_NAME = "com.google.android.marvin.talkback"

base/src/main/java/io/github/sds100/keymapper/base/actions/ActionId.kt

@@ -161,4 +161,6 @@ enum class ActionId {
     CLEAR_RECENT_APP,
 
     MODIFY_SETTING,
+
+    TALKBACK_GESTURE,
 }