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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 package org.chromium.chrome.browser.history; | |
6 | |
7 import android.app.Activity; | |
8 import android.content.Intent; | |
9 import android.text.TextUtils; | |
10 | |
11 import org.chromium.base.CommandLine; | |
12 import org.chromium.chrome.browser.IntentHandler; | |
13 import org.chromium.components.variations.VariationsAssociatedData; | |
14 | |
15 /** | |
16 * Utility methods for the browsing history manager. | |
17 */ | |
18 public class HistoryManagerUtils { | |
19 private static final String FIELD_TRIAL_NAME = "AndroidHistoryManager"; | |
20 private static final String ENABLE_HISTORY_SWTICH = "enable_android_history_ manager"; | |
21 private static final Object sLock = new Object(); | |
gone
2016/12/02 20:52:28
nit: NATIVE_HISTORY_ENABLED_LOCK?
Theresa
2016/12/02 21:35:34
Done.
| |
22 private static Boolean sNativeHistoryEnabled; | |
23 | |
24 /** | |
25 * @return Whether the Android-specific browsing history manager is enabled. | |
26 */ | |
27 public static boolean isAndroidHistoryManagerEnabled() { | |
28 synchronized (sLock) { | |
29 if (sNativeHistoryEnabled == null) { | |
30 if (CommandLine.getInstance().hasSwitch(ENABLE_HISTORY_SWTICH)) { | |
31 sNativeHistoryEnabled = true; | |
32 } else { | |
33 sNativeHistoryEnabled = TextUtils.equals("true", | |
34 VariationsAssociatedData.getVariationParamValue(FIEL D_TRIAL_NAME, | |
35 ENABLE_HISTORY_SWTICH)); | |
36 } | |
37 } | |
38 } | |
39 | |
40 return sNativeHistoryEnabled; | |
41 } | |
42 | |
43 /** | |
44 * @return Whether the Android-specific browsing history UI is was shown. | |
45 */ | |
46 public static boolean showHistoryManager(Activity activity) { | |
47 if (!isAndroidHistoryManagerEnabled()) return false; | |
48 | |
49 // TODO(twellington): Add support for tablets | |
50 Intent intent = new Intent(); | |
51 intent.setClass(activity.getApplicationContext(), HistoryActivity.class) ; | |
52 intent.putExtra(IntentHandler.EXTRA_PARENT_COMPONENT, activity.getCompon entName()); | |
53 activity.startActivity(intent); | |
54 | |
55 return true; | |
56 } | |
57 } | |
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