Full screen default app fragment

Fix: 34280137
Test: make RunSettingsRoboTests
Change-Id: Ib44e39589781d68c7952a2c16a44682791a422f1

src/com/android/settings/applications/defaultapps/DefaultHomePicker.java

@@ -0,0 +1,133 @@
+/*
+ * 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.applications.defaultapps;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.IntentFilter;
+import android.content.pm.ActivityInfo;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.content.pm.UserInfo;
+import android.os.Build;
+import android.text.TextUtils;
+
+import com.android.internal.logging.nano.MetricsProto;
+import com.android.settings.R;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class DefaultHomePicker extends DefaultAppPickerFragment {
+
+    private String mPackageName;
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+        mPackageName = context.getPackageName();
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return MetricsProto.MetricsEvent.DEFAULT_HOME_PICKER;
+    }
+
+    @Override
+    protected List<DefaultAppInfo> getCandidates() {
+        final boolean mustSupportManagedProfile = hasManagedProfile();
+        final List<DefaultAppInfo> candidates = new ArrayList<>();
+        final List<ResolveInfo> homeActivities = new ArrayList<>();
+        mPm.getHomeActivities(homeActivities);
+
+        for (ResolveInfo resolveInfo : homeActivities) {
+            final ActivityInfo info = resolveInfo.activityInfo;
+            final ComponentName activityName = new ComponentName(info.packageName, info.name);
+            if (info.packageName.equals(mPackageName)) {
+                continue;
+            }
+
+            final String summary;
+            if (mustSupportManagedProfile && !launcherHasManagedProfilesFeature(resolveInfo)) {
+                summary = getContext().getString(R.string.home_work_profile_not_supported);
+            } else {
+                summary = null;
+            }
+            final DefaultAppInfo candidate = new DefaultAppInfo(mUserId, activityName, summary);
+            candidates.add(candidate);
+        }
+        return candidates;
+    }
+
+    @Override
+    protected String getDefaultAppKey() {
+        final ArrayList<ResolveInfo> homeActivities = new ArrayList<>();
+        final ComponentName currentDefaultHome = mPm.getHomeActivities(homeActivities);
+        if (currentDefaultHome != null) {
+            return currentDefaultHome.flattenToString();
+        }
+        return null;
+    }
+
+    @Override
+    protected boolean setDefaultAppKey(String key) {
+        if (!TextUtils.isEmpty(key)) {
+            final ComponentName component = ComponentName.unflattenFromString(key);
+            final List<ResolveInfo> homeActivities = new ArrayList<>();
+            mPm.getHomeActivities(homeActivities);
+            final List<ComponentName> allComponents = new ArrayList<>();
+            for (ResolveInfo info : homeActivities) {
+                final ActivityInfo appInfo = info.activityInfo;
+                ComponentName activityName = new ComponentName(appInfo.packageName, appInfo.name);
+                allComponents.add(activityName);
+            }
+            mPm.replacePreferredActivity(
+                    DefaultHomePreferenceController.HOME_FILTER,
+                    IntentFilter.MATCH_CATEGORY_EMPTY,
+                    allComponents.toArray(new ComponentName[0]),
+                    component);
+            return true;
+        }
+        return false;
+    }
+
+    private boolean hasManagedProfile() {
+        final Context context = getContext();
+        List<UserInfo> profiles = mUserManager.getProfiles(context.getUserId());
+        for (UserInfo userInfo : profiles) {
+            if (userInfo.isManagedProfile()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private boolean launcherHasManagedProfilesFeature(ResolveInfo resolveInfo) {
+        try {
+            ApplicationInfo appInfo = mPm.getPackageManager().getApplicationInfo(
+                    resolveInfo.activityInfo.packageName, 0 /* default flags */);
+            return versionNumberAtLeastL(appInfo.targetSdkVersion);
+        } catch (PackageManager.NameNotFoundException e) {
+            return false;
+        }
+    }
+
+    private boolean versionNumberAtLeastL(int versionNumber) {
+        return versionNumber >= Build.VERSION_CODES.LOLLIPOP;
+    }
+}