1/**
2 * Copyright (c) 2014, Google Inc.
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 */
16package com.android.mail.ui;
17
18import android.app.ActionBar;
19import android.app.Activity;
20import android.os.Bundle;
21import android.view.MenuItem;
22import android.webkit.WebView;
23
24import com.android.mail.R;
25import com.android.mail.utils.LogTag;
26import com.android.mail.utils.LogUtils;
27
28import org.apache.commons.io.IOUtils;
29
30import java.io.IOException;
31import java.io.InputStream;
32import java.net.URLEncoder;
33
34/**
35 * This activity displays the Software Licenses of the libraries used by this software.
36 */
37public class LicensesActivity extends Activity {
38
39    @Override
40    protected void onCreate(Bundle savedInstanceState) {
41        super.onCreate(savedInstanceState);
42
43        setContentView(R.layout.licenses_activity);
44
45        // Enable back navigation
46        final ActionBar actionBar = getActionBar();
47        if (actionBar != null) {
48            actionBar.setDisplayHomeAsUpEnabled(true);
49        }
50
51        InputStream input = null;
52        String licenseHTML = null;
53        try {
54            // read the raw license String from the license HTML file
55            input = getResources().openRawResource(R.raw.licenses);
56            final String license = IOUtils.toString(input, "UTF-8");
57
58            // encode the license string for display as HTML in the webview
59            licenseHTML = URLEncoder.encode(license, "UTF-8").replace("+", "%20");
60        } catch (IOException e) {
61            LogUtils.e(LogTag.getLogTag(), e, "Error reading licence file");
62        } finally {
63            if (input != null) {
64                try {
65                    input.close();
66                } catch (IOException ioe) {
67                    // best attempt only
68                }
69            }
70        }
71
72        // set the license HTML into the webview
73        final WebView webview = (WebView) findViewById(R.id.webview);
74        webview.loadData(licenseHTML, "text/html", null);
75    }
76
77    @Override
78    public boolean onOptionsItemSelected(MenuItem item) {
79        switch (item.getItemId()) {
80            case android.R.id.home: {
81                finish();
82                return true;
83            }
84            default: return super.onOptionsItemSelected(item);
85        }
86    }
87}