Use WebView's new built-in dark theme. https://redmine.stoutner.com/issues/366
[PrivacyBrowser.git] / app / src / main / java / com / stoutner / privacybrowser / fragments / GuideTabFragment.java
1 /*
2  * Copyright © 2016-2020 Soren Stoutner <soren@stoutner.com>.
3  *
4  * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
5  *
6  * Privacy Browser is free software: you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation, either version 3 of the License, or
9  * (at your option) any later version.
10  *
11  * Privacy Browser is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with Privacy Browser.  If not, see <http://www.gnu.org/licenses/>.
18  */
19
20 package com.stoutner.privacybrowser.fragments;
21
22 import android.annotation.SuppressLint;
23 import android.content.res.Configuration;
24 import android.os.Bundle;
25 import android.view.LayoutInflater;
26 import android.view.View;
27 import android.view.ViewGroup;
28 import android.webkit.WebView;
29
30 import androidx.annotation.NonNull;
31 import androidx.fragment.app.Fragment;
32
33 import com.stoutner.privacybrowser.R;
34
35 public class GuideTabFragment extends Fragment {
36     // `tabNumber` is used in `onCreate()` and `onCreateView()`.
37     private int tabNumber;
38
39     // Store the tab number in the arguments bundle.
40     public static GuideTabFragment createTab (int tab) {
41         // Create a bundle.
42         Bundle bundle = new Bundle();
43
44         // Store the tab number in the bundle.
45         bundle.putInt("Tab", tab);
46
47         // Add the bundle to the fragment.
48         GuideTabFragment guideTabFragment = new GuideTabFragment();
49         guideTabFragment.setArguments(bundle);
50
51         // Return the new fragment.
52         return guideTabFragment;
53     }
54
55     @Override
56     public void onCreate(Bundle savedInstanceState) {
57         // Run the default commands.
58         super.onCreate(savedInstanceState);
59
60         // Remove the lint warning that `getArguments()` might be null.
61         assert getArguments() != null;
62
63         // Store the tab number in a class variable.
64         tabNumber = getArguments().getInt("Tab");
65     }
66
67     @SuppressLint("SetJavaScriptEnabled")
68     @Override
69     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
70         // Setting false at the end of inflater.inflate does not attach the inflated layout as a child of container.  The fragment will take care of attaching the root automatically.
71         View tabLayout = inflater.inflate(R.layout.bare_webview, container, false);
72
73         // Get a handle for the tab WebView.
74         WebView tabWebView = (WebView) tabLayout;
75
76         // Get the current theme status.
77         int currentThemeStatus = getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK;
78
79         // Load the tabs according to the theme.
80         if (currentThemeStatus == Configuration.UI_MODE_NIGHT_YES) {  // The dark theme is applied.
81             tabWebView.setBackgroundColor(getResources().getColor(R.color.gray_850));
82
83             // Tab numbers start at 0.
84             switch (tabNumber) {
85                 case 0:
86                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_overview_dark.html");
87                     break;
88
89                 case 1:
90                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_javascript_dark.html");
91                     break;
92
93                 case 2:
94                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_local_storage_dark.html");
95                     break;
96
97                 case 3:
98                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_user_agent_dark.html");
99                     break;
100
101                 case 4:
102                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_requests_dark.html");
103                     break;
104
105                 case 5:
106                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_domain_settings_dark.html");
107                     break;
108
109                 case 6:
110                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_ssl_certificates_dark.html");
111                     break;
112
113                 case 7:
114                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_proxies_dark.html");
115                     break;
116
117                 case 8:
118                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_tracking_ids_dark.html");
119                     break;
120             }
121         } else {  // The light theme is applied.
122             // Tab numbers start at 0.
123             switch (tabNumber) {
124                 case 0:
125                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_overview_light.html");
126                     break;
127
128                 case 1:
129                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_javascript_light.html");
130                     break;
131
132                 case 2:
133                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_local_storage_light.html");
134                     break;
135
136                 case 3:
137                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_user_agent_light.html");
138                     break;
139
140                 case 4:
141                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_requests_light.html");
142                     break;
143
144                 case 5:
145                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_domain_settings_light.html");
146                     break;
147
148                 case 6:
149                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_ssl_certificates_light.html");
150                     break;
151
152                 case 7:
153                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_proxies_light.html");
154                     break;
155
156                 case 8:
157                     tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/guide_tracking_ids_light.html");
158                     break;
159             }
160         }
161
162         // Return the formatted `tabLayout`.
163         return tabLayout;
164     }
165 }