Add build variant for go-specific recents.

This CL sets up the source directories to build a Go version of
quickstep recents/icon recents. This is accomplished by splitting the
quickstep resources/sources into two groups: the base source and
sources that should be overridden (recents_ui_overrides). The new Go
recents variant then takes the base and combines it with the sources
in go/quickstep which should replace the ones in recents_ui_overrides.

As of now, no classes have been moved yet, so there
are only placeholder files.

In addition, this modifies the make and gradle files to reflect the new
sources.

Bug: 114136250
Test: build all targets via tapas, build all APKs from IDE
Change-Id: I6d0a4d93ab1c38d4ffc28fd21823caadd96d23f7

Android.mk

@@ -187,10 +187,13 @@ LOCAL_STATIC_ANDROID_LIBRARIES := Launcher3CommonDepsLib
 LOCAL_SRC_FILES := \
     $(call all-java-files-under, src) \
     $(call all-java-files-under, quickstep/src) \
+    $(call all-java-files-under, quickstep/recents_ui_overrides/src) \
     $(call all-java-files-under, src_flags) \
     $(call all-java-files-under, src_shortcuts_overrides)
 
-LOCAL_RESOURCE_DIR := $(LOCAL_PATH)/quickstep/res
+LOCAL_RESOURCE_DIR := \
+    $(LOCAL_PATH)/quickstep/res \
+    $(LOCAL_PATH)/quickstep/recents_ui_overrides/res
 LOCAL_PROGUARD_ENABLED := disabled
 
 
@@ -217,7 +220,9 @@ LOCAL_PACKAGE_NAME := Launcher3QuickStep
 LOCAL_PRIVILEGED_MODULE := true
 LOCAL_OVERRIDES_PACKAGES := Home Launcher2 Launcher3
 
-LOCAL_RESOURCE_DIR := $(LOCAL_PATH)/quickstep/res
+LOCAL_RESOURCE_DIR := \
+    $(LOCAL_PATH)/quickstep/res \
+    $(LOCAL_PATH)/quickstep/recents_ui_overrides/res
 
 LOCAL_FULL_LIBS_MANIFEST_FILES := \
     $(LOCAL_PATH)/AndroidManifest.xml \
@@ -249,10 +254,12 @@ LOCAL_STATIC_ANDROID_LIBRARIES := Launcher3CommonDepsLib
 LOCAL_SRC_FILES := \
     $(call all-java-files-under, src) \
     $(call all-java-files-under, quickstep/src) \
+    $(call all-java-files-under, quickstep/recents_ui_overrides/src) \
     $(call all-java-files-under, go/src)
 
 LOCAL_RESOURCE_DIR := \
     $(LOCAL_PATH)/quickstep/res \
+    $(LOCAL_PATH)/quickstep/recents_ui_overrides/res \
     $(LOCAL_PATH)/go/res
 
 LOCAL_PROGUARD_FLAG_FILES := proguard.flags
@@ -271,6 +278,51 @@ LOCAL_MANIFEST_FILE := quickstep/AndroidManifest.xml
 LOCAL_JACK_COVERAGE_INCLUDE_FILTER := com.android.launcher3.*
 include $(BUILD_PACKAGE)
 
+#
+# Build rule for Launcher3 Go app with quickstep and Go-specific
+# version of recents for Android Go devices.
+#
+include $(CLEAR_VARS)
+LOCAL_USE_AAPT2 := true
+LOCAL_MODULE_TAGS := optional
+
+ifneq (,$(wildcard frameworks/base))
+  LOCAL_STATIC_JAVA_LIBRARIES := SystemUISharedLib launcherprotosnano
+  LOCAL_PRIVATE_PLATFORM_APIS := true
+else
+  LOCAL_STATIC_JAVA_LIBRARIES := libSharedSystemUI libLauncherProtos
+  LOCAL_SDK_VERSION := system_current
+  LOCAL_MIN_SDK_VERSION := 26
+endif
+LOCAL_STATIC_ANDROID_LIBRARIES := Launcher3CommonDepsLib
+
+LOCAL_SRC_FILES := \
+    $(call all-java-files-under, src) \
+    $(call all-java-files-under, quickstep/src) \
+    $(call all-java-files-under, go/src) \
+    $(call all-java-files-under, go/quickstep/src)
+
+LOCAL_RESOURCE_DIR := \
+    $(LOCAL_PATH)/quickstep/res \
+    $(LOCAL_PATH)/go/res \
+    $(LOCAL_PATH)/go/quickstep/res
+
+LOCAL_PROGUARD_FLAG_FILES := proguard.flags
+LOCAL_PROGUARD_ENABLED := full
+
+LOCAL_PACKAGE_NAME := Launcher3QuickStepGoIconRecents
+LOCAL_PRIVILEGED_MODULE := true
+LOCAL_OVERRIDES_PACKAGES := Home Launcher2 Launcher3 Launcher3QuickStep
+
+LOCAL_FULL_LIBS_MANIFEST_FILES := \
+    $(LOCAL_PATH)/go/AndroidManifest.xml \
+    $(LOCAL_PATH)/AndroidManifest.xml \
+    $(LOCAL_PATH)/AndroidManifest-common.xml
+
+LOCAL_MANIFEST_FILE := quickstep/AndroidManifest.xml
+LOCAL_JACK_COVERAGE_INCLUDE_FILTER := com.android.launcher3.*
+include $(BUILD_PACKAGE)
+
 
 # ==================================================
 include $(call all-makefiles-under,$(LOCAL_PATH))

build.gradle

@@ -59,6 +59,12 @@ android {
             minSdkVersion 28
         }
 
+        withQuickstepIconRecents {
+            dimension "recents"
+
+            minSdkVersion 28
+        }
+
         withoutQuickstep {
             dimension "recents"
         }
@@ -67,7 +73,12 @@ android {
     // Disable release builds for now
     android.variantFilter { variant ->
         if (variant.buildType.name.endsWith('release')) {
-            variant.setIgnore(true);
+            variant.setIgnore(true)
+        }
+
+        // Icon recents is Go only
+        if (name.contains("WithQuickstepIconRecents") && !name.contains("l3go")) {
+            variant.setIgnore(true)
         }
     }
 
@@ -112,8 +123,14 @@ android {
         }
 
         withQuickstep {
-            res.srcDirs = ['quickstep/res']
+            res.srcDirs = ['quickstep/res', 'quickstep/recents_ui_overrides/res']
-            java.srcDirs = ['quickstep/src']
+            java.srcDirs = ['quickstep/src', 'quickstep/recents_ui_overrides/src']
+            manifest.srcFile "quickstep/AndroidManifest.xml"
+        }
+
+        withQuickstepIconRecents {
+            res.srcDirs = ['quickstep/res', 'go/quickstep/res']
+            java.srcDirs = ['quickstep/src', 'go/quickstep/src']
             manifest.srcFile "quickstep/AndroidManifest.xml"
         }
     }
@@ -136,6 +153,9 @@ dependencies {
     // Recents lib dependency
     withQuickstepImplementation fileTree(dir: "quickstep/libs", include: 'sysui_shared.jar')
 
+    // Recents lib dependency for Go
+    withQuickstepIconRecentsImplementation fileTree(dir: "quickstep/libs", include: 'sysui_shared.jar')
+
     // Required for AOSP to compile. This is already included in the sysui_shared.jar
     withoutQuickstepImplementation fileTree(dir: "libs", include: 'plugin_core.jar')