Add controllers for default app shortcut preferences.

- add the default app shortcut preferences to the preference screen
xml instead of creating them dynamically in the fragment.
- add controller for each of the shortcut preference.
- move the corresponding shortcut detail settings into the appinfo
package.
- add individual preference screen xml for the shortcut detail settings
instead of using the shared screen template.

Bug: 69384089
Test: make RunSettingsRoboTests
Change-Id: I7bc0b3b727e87fb1a32a82291e64b8e290947671

src/com/android/settings/applications/appinfo/ExternalSourceDetailPreferenceController.java

@@ -0,0 +1,71 @@
+/*
+ * 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.appinfo;
+
+import android.content.Context;
+import android.os.UserManager;
+import android.support.annotation.VisibleForTesting;
+import android.support.v7.preference.Preference;
+
+import com.android.settings.SettingsPreferenceFragment;
+import com.android.settings.applications.AppInfoDashboardFragment;
+import com.android.settings.applications.AppStateInstallAppsBridge;
+
+public class ExternalSourceDetailPreferenceController extends AppInfoPreferenceControllerBase {
+
+    private static final String KEY = "install_other_apps";
+
+    private final String mPackageName;
+
+    public ExternalSourceDetailPreferenceController(Context context,
+            AppInfoDashboardFragment parent, String packageName) {
+        super(context, parent, KEY);
+        mPackageName = packageName;
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        if (UserManager.get(mContext).isManagedProfile()) {
+            return DISABLED_FOR_USER;
+        }
+        return isPotentialAppSource() ? AVAILABLE : DISABLED_FOR_USER;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        preference.setSummary(getPreferenceSummary());
+    }
+
+    @Override
+    protected Class<? extends SettingsPreferenceFragment> getDetailFragmentClass() {
+        return ExternalSourcesDetails.class;
+    }
+
+    @VisibleForTesting
+    CharSequence getPreferenceSummary() {
+        return ExternalSourcesDetails.getPreferenceSummary(mContext, mParent.getAppEntry());
+    }
+
+    @VisibleForTesting
+    boolean isPotentialAppSource() {
+        AppStateInstallAppsBridge.InstallAppsState appState =
+                new AppStateInstallAppsBridge(mContext, null, null).createInstallAppsStateFor(
+                        mPackageName, mParent.getPackageInfo().applicationInfo.uid);
+        return appState.isPotentialAppSource();
+    }
+
+}