Introduce ShortcutManagerThrottlingPreferenceCtrl

- Create new ShortcutManagerThrottlingPreferenceController
 - Create controller inside the DashboardFragment
 - Port logic from DevelopmentSettings into the controller

Bug: 34203528
Test: make RunSettingsRoboTests -j40
Change-Id: I5409b40b4ed7d350af34498da9a3d7d79200f69b

src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java

@@ -320,7 +320,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
         // inactive apps
         controllers.add(new AllowAppsOnExternalPreferenceController(context));
         controllers.add(new ResizableActivityPreferenceController(context));
-        // reset shortcutmanager rate-limiting
+        controllers.add(new ShortcutManagerThrottlingPreferenceController(context));
         return controllers;
     }
 

src/com/android/settings/development/ShortcutManagerThrottlingPreferenceController.java

@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * 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 com.android.settings.development;
+
+import android.content.Context;
+import android.content.pm.IShortcutService;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.support.v7.preference.Preference;
+import android.text.TextUtils;
+import android.util.Log;
+import android.widget.Toast;
+
+import com.android.settings.R;
+
+public class ShortcutManagerThrottlingPreferenceController extends
+        DeveloperOptionsPreferenceController {
+
+    private static final String TAG = "ShortcutMgrPrefCtrl";
+
+    private static final String SHORTCUT_MANAGER_RESET_KEY = "reset_shortcut_manager_throttling";
+
+    private final IShortcutService mShortcutService;
+
+    public ShortcutManagerThrottlingPreferenceController(Context context) {
+        super(context);
+
+        mShortcutService = getShortCutService();
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return SHORTCUT_MANAGER_RESET_KEY;
+    }
+
+    @Override
+    public boolean handlePreferenceTreeClick(Preference preference) {
+        if (!TextUtils.equals(SHORTCUT_MANAGER_RESET_KEY, preference.getKey())) {
+            return false;
+        }
+        resetShortcutManagerThrottling();
+        return true;
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchEnabled() {
+        // intentional no-op
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchDisabled() {
+        // intentional no-op
+    }
+
+    private void resetShortcutManagerThrottling() {
+        if (mShortcutService == null) {
+            return;
+        }
+        try {
+            mShortcutService.resetThrottling();
+            Toast.makeText(mContext, R.string.reset_shortcut_manager_throttling_complete,
+                    Toast.LENGTH_SHORT).show();
+        } catch (RemoteException e) {
+            Log.e(TAG, "Failed to reset rate limiting", e);
+        }
+    }
+
+    private IShortcutService getShortCutService() {
+        try {
+            return IShortcutService.Stub.asInterface(
+                    ServiceManager.getService(Context.SHORTCUT_SERVICE));
+        } catch (VerifyError e) {
+            // Used for tests since Robolectric cannot initialize this class.
+            return null;
+        }
+    }
+}