Add "Don't suggest app" shortcut to suggested apps.

This works for suggested apps in both Home and AA+. When enable_shortcut_dont_suggest_app is true, the secondary drop target "Don't Suggest app" is removed instead "Don't suggest app" is added to shortcuts.

Video: https://b.corp.google.com/issues/319250810#comment5

Home: https://screenshot.googleplex.com/d7Wts48X6EmFAYg.png
Private space app suggested: https://screenshot.googleplex.com/BukzCRTvkzbpwQ3.png

AA+: https://screenshot.googleplex.com/ADMCHnQ378jvJEE.png
Private space app suggested : https://screenshot.googleplex.com/AYga8Km3646AqMt.png

Bug: 319250810
Flag: aconfig com.android.launcher.enable_shortcut_dont_suggest_app DEVELOPMENT
Test: Manual.

Change-Id: Ia7df749a1c7d806bd9d74124be138384c3050119
diff --git a/src/com/android/launcher3/SecondaryDropTarget.java b/src/com/android/launcher3/SecondaryDropTarget.java
index 2dd610cb..0b92c28 100644
--- a/src/com/android/launcher3/SecondaryDropTarget.java
+++ b/src/com/android/launcher3/SecondaryDropTarget.java
@@ -155,6 +155,9 @@
             }
             return INVALID;
         } else if (info.isPredictedItem()) {
+            if (Flags.enableShortcutDontSuggestApp()) {
+                return INVALID;
+            }
             return DISMISS_PREDICTION;
         }
 
diff --git a/src/com/android/launcher3/logging/StatsLogManager.java b/src/com/android/launcher3/logging/StatsLogManager.java
index 0dc0d02..59bd03b 100644
--- a/src/com/android/launcher3/logging/StatsLogManager.java
+++ b/src/com/android/launcher3/logging/StatsLogManager.java
@@ -211,6 +211,9 @@
         @UiEvent(doc = "User tapped on pin system shortcut.")
         LAUNCHER_SYSTEM_SHORTCUT_PIN_TAP(522),
 
+        @UiEvent(doc = "User tapped on don't suggest app system shortcut.")
+        LAUNCHER_SYSTEM_SHORTCUT_DONT_SUGGEST_APP_TAP(1603),
+
         @UiEvent(doc = "User is shown All Apps education view.")
         LAUNCHER_ALL_APPS_EDU_SHOWN(523),
 
diff --git a/src/com/android/launcher3/popup/SystemShortcut.java b/src/com/android/launcher3/popup/SystemShortcut.java
index 8463361..598207b 100644
--- a/src/com/android/launcher3/popup/SystemShortcut.java
+++ b/src/com/android/launcher3/popup/SystemShortcut.java
@@ -2,6 +2,7 @@
 
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_PRIVATE_SPACE_INSTALL_SYSTEM_SHORTCUT_TAP;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_SYSTEM_SHORTCUT_APP_INFO_TAP;
+import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_SYSTEM_SHORTCUT_DONT_SUGGEST_APP_TAP;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_SYSTEM_SHORTCUT_WIDGETS_TAP;
 
 import android.app.ActivityOptions;
@@ -314,6 +315,34 @@
         }
     }
 
+    public static final Factory<Launcher> DONT_SUGGEST_APP = new Factory<Launcher>() {
+        @Nullable
+        @Override
+        public SystemShortcut<Launcher> getShortcut(Launcher activity, ItemInfo itemInfo,
+                View originalView) {
+            if (!itemInfo.isPredictedItem()) {
+                return null;
+            }
+            return new DontSuggestApp(activity, itemInfo, originalView);
+        }
+    };
+
+    private static class DontSuggestApp extends SystemShortcut<Launcher> {
+        DontSuggestApp(Launcher target, ItemInfo itemInfo,
+                View originalView) {
+            super(R.drawable.ic_block_no_shadow, R.string.dismiss_prediction_label, target,
+                    itemInfo, originalView);
+        }
+
+        @Override
+        public void onClick(View view) {
+            dismissTaskMenuView(mTarget);
+            mTarget.getStatsLogManager().logger()
+                    .withItemInfo(mItemInfo)
+                    .log(LAUNCHER_SYSTEM_SHORTCUT_DONT_SUGGEST_APP_TAP);
+        }
+    }
+
     public static <T extends Context & ActivityContext> void dismissTaskMenuView(T activity) {
         AbstractFloatingView.closeOpenViews(activity, true,
             AbstractFloatingView.TYPE_ALL & ~AbstractFloatingView.TYPE_REBIND_SAFE);