AppLaunchSettings.java revision 1230ac820ea94b8f3f6285fd4cae056e62d96183 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.settings.applications;
18
19import android.app.AlertDialog;
20import android.content.Intent;
21import android.content.IntentFilter;
22import android.content.pm.ApplicationInfo;
23import android.content.pm.IntentFilterVerificationInfo;
24import android.content.pm.PackageManager;
25import android.content.pm.ResolveInfo;
26import android.net.Uri;
27import android.os.Bundle;
28import android.os.UserHandle;
29import android.support.v7.preference.DropDownPreference;
30import android.support.v7.preference.Preference;
31import android.support.v7.preference.Preference.OnPreferenceChangeListener;
32import android.util.ArraySet;
33import android.util.Log;
34import android.view.View;
35import android.view.View.OnClickListener;
36
37import com.android.internal.logging.MetricsLogger;
38import com.android.settings.R;
39import com.android.settings.Utils;
40
41import java.util.List;
42
43import static android.content.pm.PackageManager.INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_ALWAYS;
44import static android.content.pm.PackageManager.INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_ALWAYS_ASK;
45import static android.content.pm.PackageManager.INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_NEVER;
46import static android.content.pm.PackageManager.INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_UNDEFINED;
47
48public class AppLaunchSettings extends AppInfoWithHeader implements OnClickListener,
49        Preference.OnPreferenceChangeListener {
50    private static final String TAG = "AppLaunchSettings";
51
52    private static final String KEY_APP_LINK_STATE = "app_link_state";
53    private static final String KEY_SUPPORTED_DOMAIN_URLS = "app_launch_supported_domain_urls";
54    private static final String KEY_CLEAR_DEFAULTS = "app_launch_clear_defaults";
55
56    private static final Intent sBrowserIntent;
57    static {
58        sBrowserIntent = new Intent()
59                .setAction(Intent.ACTION_VIEW)
60                .addCategory(Intent.CATEGORY_BROWSABLE)
61                .setData(Uri.parse("http:"));
62    }
63
64    private PackageManager mPm;
65
66    private boolean mIsBrowser;
67    private boolean mHasDomainUrls;
68    private DropDownPreference mAppLinkState;
69    private AppDomainsPreference mAppDomainUrls;
70    private ClearDefaultsPreference mClearDefaultsPreference;
71
72    @Override
73    public void onCreate(Bundle savedInstanceState) {
74        super.onCreate(savedInstanceState);
75
76        addPreferencesFromResource(R.xml.installed_app_launch_settings);
77        mAppDomainUrls = (AppDomainsPreference) findPreference(KEY_SUPPORTED_DOMAIN_URLS);
78        mClearDefaultsPreference = (ClearDefaultsPreference) findPreference(KEY_CLEAR_DEFAULTS);
79        mAppLinkState = (DropDownPreference) findPreference(KEY_APP_LINK_STATE);
80
81        mPm = getActivity().getPackageManager();
82
83        mIsBrowser = isBrowserApp(mPackageName);
84        mHasDomainUrls =
85                (mAppEntry.info.privateFlags & ApplicationInfo.PRIVATE_FLAG_HAS_DOMAIN_URLS) != 0;
86
87        if (!mIsBrowser) {
88            List<IntentFilterVerificationInfo> iviList = mPm.getIntentFilterVerifications(mPackageName);
89            List<IntentFilter> filters = mPm.getAllIntentFilters(mPackageName);
90            CharSequence[] entries = getEntries(mPackageName, iviList, filters);
91            mAppDomainUrls.setTitles(entries);
92            mAppDomainUrls.setValues(new int[entries.length]);
93        }
94        buildStateDropDown();
95    }
96
97    // An app is a "browser" if it has an activity resolution that wound up
98    // marked with the 'handleAllWebDataURI' flag.
99    private boolean isBrowserApp(String packageName) {
100        sBrowserIntent.setPackage(packageName);
101        List<ResolveInfo> list = mPm.queryIntentActivitiesAsUser(sBrowserIntent,
102                PackageManager.MATCH_ALL, UserHandle.myUserId());
103        final int count = list.size();
104        for (int i = 0; i < count; i++) {
105            ResolveInfo info = list.get(i);
106            if (info.activityInfo != null && info.handleAllWebDataURI) {
107                return true;
108            }
109        }
110        return false;
111    }
112
113    private void buildStateDropDown() {
114        if (mIsBrowser) {
115            // Browsers don't show the app-link prefs
116            mAppLinkState.setShouldDisableView(true);
117            mAppLinkState.setEnabled(false);
118            mAppDomainUrls.setShouldDisableView(true);
119            mAppDomainUrls.setEnabled(false);
120        } else {
121            // Designed order of states in the dropdown:
122            //
123            // * always
124            // * ask
125            // * never
126            mAppLinkState.setEntries(new CharSequence[] {
127                    getString(R.string.app_link_open_always),
128                    getString(R.string.app_link_open_ask),
129                    getString(R.string.app_link_open_never),
130            });
131            mAppLinkState.setEntryValues(new CharSequence[] {
132                    Integer.toString(INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_ALWAYS),
133                    Integer.toString(INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_ALWAYS_ASK),
134                    Integer.toString(INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_NEVER),
135            });
136
137            mAppLinkState.setEnabled(mHasDomainUrls);
138            if (mHasDomainUrls) {
139                // Present 'undefined' as 'ask' because the OS treats them identically for
140                // purposes of the UI (and does the right thing around pending domain
141                // verifications that might arrive after the user chooses 'ask' in this UI).
142                final int state = mPm.getIntentVerificationStatus(mPackageName, UserHandle.myUserId());
143                mAppLinkState.setValue(
144                        Integer.toString((state == INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_UNDEFINED)
145                                ? INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_ALWAYS_ASK
146                                        : state));
147
148                // Set the callback only after setting the initial selected item
149                mAppLinkState.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {
150                    @Override
151                    public boolean onPreferenceChange(Preference preference, Object newValue) {
152                        return updateAppLinkState(Integer.parseInt((String) newValue));
153                    }
154                });
155            }
156        }
157    }
158
159    private boolean updateAppLinkState(final int newState) {
160        if (mIsBrowser) {
161            // We shouldn't get into this state, but if we do make sure
162            // not to cause any permanent mayhem.
163            return false;
164        }
165
166        final int userId = UserHandle.myUserId();
167        final int priorState = mPm.getIntentVerificationStatus(mPackageName, userId);
168
169        if (priorState == newState) {
170            return false;
171        }
172
173        boolean success = mPm.updateIntentVerificationStatus(mPackageName, newState, userId);
174        if (success) {
175            // Read back the state to see if the change worked
176            final int updatedState = mPm.getIntentVerificationStatus(mPackageName, userId);
177            success = (newState == updatedState);
178        } else {
179            Log.e(TAG, "Couldn't update intent verification status!");
180        }
181        return success;
182    }
183
184    private CharSequence[] getEntries(String packageName, List<IntentFilterVerificationInfo> iviList,
185            List<IntentFilter> filters) {
186        ArraySet<String> result = Utils.getHandledDomains(mPm, packageName);
187        return result.toArray(new CharSequence[result.size()]);
188    }
189
190    @Override
191    protected boolean refreshUi() {
192        mClearDefaultsPreference.setPackageName(mPackageName);
193        mClearDefaultsPreference.setAppEntry(mAppEntry);
194        return true;
195    }
196
197    @Override
198    protected AlertDialog createDialog(int id, int errorCode) {
199        // No dialogs for preferred launch settings.
200        return null;
201    }
202
203    @Override
204    public void onClick(View v) {
205        // Nothing to do
206    }
207
208    @Override
209    public boolean onPreferenceChange(Preference preference, Object newValue) {
210        // actual updates are handled by the app link dropdown callback
211        return true;
212    }
213
214    @Override
215    protected int getMetricsCategory() {
216        return MetricsLogger.APPLICATIONS_APP_LAUNCH;
217    }
218}
219