Open Recents as a gesture option (#4773)

* Initial test of adding recents on gestures.

* Rename

* FIxes

* Fix options?

* surely this time!

* A11y and some cleanup (this is still very ugly and needs fixing)

* Update accessibility desc.

* Fix strings rename

* Update RecentsGestureHandler

* Fix merge

* Update GestureHandlerConfig.kt (fix compilation errors)

* Update strings.xml

* Fix build

* fixed style

---------

Co-authored-by: MrSluffy <werdna.jac@gmail.com>

lawnchair/res/values/strings.xml

@@ -88,7 +88,7 @@
     <string name="what_to_show">What to show</string>
 
     <!-- A11y description -->
-    <string name="accessibility_service_description">To lock your phone when performing a gesture, Lawnchair requires accessibility access.\n\nLawnchair doesn\'t watch any user action, though the privilege to do so is required for all accessibility services. Lawnchair discards any event sent by the system.\n\nIn order to lock your phone, Lawnchair uses the performGlobalAction Accessibility service.</string>
+    <string name="accessibility_service_description">To lock your phone when performing a gesture, and to open Recents via gesture, Lawnchair requires accessibility access.\n\nLawnchair doesn\'t watch any user action, though the privilege to do so is required for all accessibility services. Lawnchair discards any event sent by the system.\n\nIn order to lock your phone, or to open Recents, Lawnchair uses the performGlobalAction Accessibility service.</string>
 
     <string name="iconPackPackageDefault" translatable="false">""</string>
 
@@ -435,6 +435,7 @@
 
     <string name="gesture_handler_no_op">Do nothing</string>
     <string name="gesture_handler_sleep">Sleep</string>
+    <string name="gesture_handler_recents">Open Recents</string>
     <string name="gesture_handler_open_notifications">Open notification panel</string>
     <string name="gesture_handler_open_app_option">Open app</string>
     <string name="gesture_handler_open_app_config">Open %1$s</string>
@@ -448,9 +449,12 @@
     <string name="dt2s_admin_hint">To use Double-Tap to Sleep, set Lawnchair as a device admin app. Tap \"Open settings\", then tap \"Activate this device admin app.\"</string>
     <string name="dt2s_admin_warning">Double-Tap to Sleep will be turned off.</string>
 
-    <string name="dt2s_a11y_hint_title">Turn on accessibility service</string>
+
+    <string name="d2ts_recents_a11y_hint_title">Turn on accessibility service</string>
     <string name="dt2s_a11y_hint">To use Double-Tap to Sleep, turn on the Lawnchair accessibility service. Tap \"Open settings\", select \"Lawnchair\" and turn on \"Use Lawnchair.\"\n\nLawnchair uses Accessibility\'s `performGlobalAction` method to perform this action. This is a sensitive permission that allows monitoring other apps. However, Lawnchair is not configured for that functionality and receives no events.</string>
-    <string name="dt2s_warning_open_settings">Open settings</string>
+    <string name="dt2s_recents_warning_open_settings">Open settings</string>
+
+<string name="recents_a11y_hint">To use Open Recents, turn on the Lawnchair accessibility service. Tap \"Open settings\", select \"Lawnchair\" and turn on \"Use Lawnchair.\"\n\nLawnchair uses Accessibility\'s `performGlobalAction` method to perform this action. This is a sensitive permission that allows monitoring other apps. However, Lawnchair is not configured for that functionality and receives no events.</string>
 
     <!--
 

lawnchair/src/app/lawnchair/gestures/config/GestureHandlerConfig.kt

@@ -9,6 +9,7 @@ import app.lawnchair.gestures.handlers.OpenAppSearchGestureHandler
 import app.lawnchair.gestures.handlers.OpenAppTarget
 import app.lawnchair.gestures.handlers.OpenNotificationsHandler
 import app.lawnchair.gestures.handlers.OpenSearchGestureHandler
+import app.lawnchair.gestures.handlers.RecentsGestureHandler
 import app.lawnchair.gestures.handlers.SleepGestureHandler
 import com.android.launcher3.R
 import kotlinx.serialization.SerialName
@@ -41,7 +42,11 @@ sealed class GestureHandlerConfig {
     data object Sleep : Simple(R.string.gesture_handler_sleep, ::SleepGestureHandler)
 
     @Serializable
-    @SerialName("openNotifications")
+    @SerialName("recents")
+    data object Recents : Simple(R.string.gesture_handler_recents, ::RecentsGestureHandler)
+
+    @Serializable
+    @SerialName("openNotificationdata")
     data object OpenNotifications : Simple(R.string.gesture_handler_open_notifications, ::OpenNotificationsHandler)
 
     @Serializable

lawnchair/src/app/lawnchair/gestures/config/GestureHandlerOption.kt

@@ -25,6 +25,7 @@ sealed class GestureHandlerOption(
 
     data object NoOp : Simple(GestureHandlerConfig.NoOp)
     data object Sleep : Simple(GestureHandlerConfig.Sleep)
+    data object Recents : Simple(GestureHandlerConfig.Recents)
     data object OpenNotifications : Simple(GestureHandlerConfig.OpenNotifications)
     data object OpenAppDrawer : Simple(GestureHandlerConfig.OpenAppDrawer)
     data object OpenAppSearch : Simple(GestureHandlerConfig.OpenAppSearch)

lawnchair/src/app/lawnchair/gestures/handlers/RecentsGestureHandler.kt

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2021, Lawnchair
+ *
+ * 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 app.lawnchair.gestures.handlers
+
+import android.accessibilityservice.AccessibilityService
+import android.content.Context
+import android.content.Intent
+import android.provider.Settings
+import app.lawnchair.LawnchairLauncher
+import app.lawnchair.lawnchairApp
+import app.lawnchair.views.ComposeBottomSheet
+import com.android.launcher3.R
+
+class RecentsGestureHandler(context: Context) : GestureHandler(context) {
+
+    override suspend fun onTrigger(launcher: LawnchairLauncher) {
+        val app = launcher.lawnchairApp
+        if (!app.isAccessibilityServiceBound()) {
+            val intent = Intent(Settings.ACTION_ACCESSIBILITY_SETTINGS)
+                .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+            ComposeBottomSheet.show(launcher) {
+                ServiceWarningDialog(
+                    title = R.string.d2ts_recents_a11y_hint_title,
+                    description = R.string.recents_a11y_hint,
+                    settingsIntent = intent,
+                ) { close(true) }
+            }
+            return
+        }
+        app.performGlobalAction(AccessibilityService.GLOBAL_ACTION_RECENTS)
+    }
+}

lawnchair/src/app/lawnchair/gestures/handlers/SleepGestureHandler.kt

@@ -83,7 +83,7 @@ class SleepMethodPieAccessibility(context: Context) : SleepGestureHandler.SleepM
                 .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
             ComposeBottomSheet.show(launcher) {
                 ServiceWarningDialog(
-                    title = R.string.dt2s_a11y_hint_title,
+                    title = R.string.d2ts_recents_a11y_hint_title,
                     description = R.string.dt2s_a11y_hint,
                     settingsIntent = intent,
                 ) { close(true) }
@@ -155,7 +155,7 @@ fun ServiceWarningDialog(
                     handleClose()
                 },
             ) {
-                Text(text = stringResource(id = R.string.dt2s_warning_open_settings))
+                Text(text = stringResource(id = R.string.dt2s_recents_warning_open_settings))
             }
         },
     )

lawnchair/src/app/lawnchair/ui/preferences/components/GestureHandlerPreference.kt

@@ -26,6 +26,7 @@ import kotlinx.coroutines.launch
 val options = listOf(
     GestureHandlerOption.NoOp,
     GestureHandlerOption.Sleep,
+    GestureHandlerOption.Recents,
     GestureHandlerOption.OpenNotifications,
     GestureHandlerOption.OpenAppDrawer,
     GestureHandlerOption.OpenAppSearch,