Modified the ManageDomainUrls

Test: manual
Test: make RunSettingsRoboTests -j ROBOTEST_FILTER=com.android.settings.applications
      make RunSettingsRoboTests -j ROBOTEST_FILTER=com.android.settings.core
      atest UniquePreferenceTest
      atest SettingsGatewayTest

Change-Id: Ib5b1281be6cb3cab8528d10b6d6ff3146f33b8df

src/com/android/settings/applications/managedomainurls/DomainAppPreferenceController.java

@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) 2018 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.applications.managedomainurls;
+
+import android.app.Application;
+import android.content.Context;
+import android.text.TextUtils;
+import android.util.ArrayMap;
+
+import com.android.settings.R;
+import com.android.settings.applications.AppInfoBase;
+import com.android.settings.applications.AppLaunchSettings;
+import com.android.settings.core.BasePreferenceController;
+import com.android.settingslib.applications.ApplicationsState;
+import com.android.settingslib.applications.ApplicationsState.AppEntry;
+
+import java.util.ArrayList;
+import java.util.Map;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceGroup;
+import androidx.preference.PreferenceScreen;
+
+public class DomainAppPreferenceController extends BasePreferenceController implements
+        ApplicationsState.Callbacks {
+
+    // constant value that can be used to check return code from sub activity.
+    private static final int INSTALLED_APP_DETAILS = 1;
+
+    private int mMetricsCategory;
+    private ApplicationsState mApplicationsState;
+    private ApplicationsState.Session mSession;
+    private ManageDomainUrls mFragment;
+    private PreferenceGroup mDomainAppList;
+    private Map<String, Preference> mPreferenceCache;
+
+    public DomainAppPreferenceController(Context context, String key) {
+        super(context, key);
+        mApplicationsState = ApplicationsState.getInstance(
+                (Application) mContext.getApplicationContext());
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mDomainAppList = (PreferenceGroup) screen.findPreference(getPreferenceKey());
+    }
+
+    @Override
+    public boolean handlePreferenceTreeClick(Preference preference) {
+        if (preference instanceof DomainAppPreference) {
+            ApplicationsState.AppEntry entry = ((DomainAppPreference) preference).getEntry();
+            AppInfoBase.startAppInfoFragment(AppLaunchSettings.class, R.string.auto_launch_label,
+                    entry.info.packageName, entry.info.uid, mFragment,
+                    INSTALLED_APP_DETAILS, mMetricsCategory);
+            return true;
+        }
+        return false;
+    }
+
+    public void setFragment(ManageDomainUrls fragment) {
+        mFragment = fragment;
+        mMetricsCategory = fragment.getMetricsCategory();
+        mSession = mApplicationsState.newSession(this, mFragment.getLifecycle());
+    }
+
+    @Override
+    public void onRunningStateChanged(boolean running) {
+    }
+
+    @Override
+    public void onPackageListChanged() {
+    }
+
+    @Override
+    public void onRebuildComplete(ArrayList<AppEntry> apps) {
+        if (mContext == null) {
+            return;
+        }
+        rebuildAppList(mDomainAppList, apps);
+    }
+
+    @Override
+    public void onPackageIconChanged() {
+    }
+
+    @Override
+    public void onPackageSizeChanged(String packageName) {
+    }
+
+    @Override
+    public void onAllSizesComputed() {
+    }
+
+    @Override
+    public void onLauncherInfoChanged() {
+    }
+
+    @Override
+    public void onLoadEntriesCompleted() {
+        rebuild();
+    }
+
+    private void cacheAllPrefs(PreferenceGroup group) {
+        mPreferenceCache = new ArrayMap();
+        final int count = group.getPreferenceCount();
+        for (int i = 0; i < count; i++) {
+            Preference p = group.getPreference(i);
+            if (TextUtils.isEmpty(p.getKey())) {
+                continue;
+            }
+            mPreferenceCache.put(p.getKey(), p);
+        }
+    }
+
+    private Preference getCachedPreference(String key) {
+        return mPreferenceCache != null ? mPreferenceCache.remove(key) : null;
+    }
+
+    private void removeCachedPrefs(PreferenceGroup group) {
+        for (Preference p : mPreferenceCache.values()) {
+            group.removePreference(p);
+        }
+        mPreferenceCache = null;
+    }
+
+    private void rebuild() {
+        final ArrayList<AppEntry> apps = mSession.rebuild(
+                ApplicationsState.FILTER_WITH_DOMAIN_URLS, ApplicationsState.ALPHA_COMPARATOR);
+        if (apps != null) {
+            onRebuildComplete(apps);
+        }
+    }
+
+    private void rebuildAppList(PreferenceGroup group, ArrayList<AppEntry> apps) {
+        cacheAllPrefs(group);
+        final int size = apps.size();
+        for (int i = 0; i < size; i++) {
+            AppEntry entry = apps.get(i);
+            String key = entry.info.packageName + "|" + entry.info.uid;
+            DomainAppPreference preference = (DomainAppPreference) getCachedPreference(key);
+            if (preference == null) {
+                preference = new DomainAppPreference(group.getContext(), mApplicationsState, entry);
+                preference.setKey(key);
+                group.addPreference(preference);
+            } else {
+                preference.reuse();
+            }
+            preference.setOrder(i);
+        }
+        removeCachedPrefs(group);
+    }
+}