DownloadController.java revision 2a99a7e74a7f215066514fe81d2bfa6639d9eddd 
1// Copyright (c) 2012 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
5package org.chromium.content.browser;
6
7import org.chromium.base.CalledByNative;
8import org.chromium.base.JNINamespace;
9
10/**
11 * Java counterpart of android DownloadController.
12 *
13 * Its a singleton class instantiated by the C++ DownloadController.
14 */
15@JNINamespace("content")
16class DownloadController {
17    private static final String LOGTAG = "DownloadController";
18    private static DownloadController sInstance;
19
20    @CalledByNative
21    public static DownloadController getInstance() {
22        if (sInstance == null) {
23            sInstance = new DownloadController();
24        }
25        return sInstance;
26    }
27
28    private DownloadController() {
29        nativeInit();
30    }
31
32    private static ContentViewDownloadDelegate downloadDelegateFromView(ContentViewCore view) {
33        return view.getDownloadDelegate();
34    }
35
36    /**
37     * Notifies the download delegate of a new GET download and passes all the information
38     * needed to download the file.
39     *
40     * The download delegate is expected to handle the download.
41     */
42    @CalledByNative
43    public void newHttpGetDownload(ContentViewCore view, String url,
44            String userAgent, String contentDisposition, String mimetype,
45            String cookie, String referer, long contentLength) {
46        ContentViewDownloadDelegate downloadDelagate = downloadDelegateFromView(view);
47
48        if (downloadDelagate != null) {
49            downloadDelagate.requestHttpGetDownload(url, userAgent, contentDisposition,
50                    mimetype, cookie, referer, contentLength);
51        }
52    }
53
54    /**
55     * Notifies the download delegate that a new POST download has started.
56     */
57    @CalledByNative
58    public void onHttpPostDownloadStarted(ContentViewCore view) {
59        ContentViewDownloadDelegate downloadDelagate = downloadDelegateFromView(view);
60
61        if (downloadDelagate != null) {
62            downloadDelagate.onHttpPostDownloadStarted();
63        }
64    }
65
66    /**
67     * Notifies the download delegate that a POST download completed and passes along info about the
68     * download.
69     */
70    @CalledByNative
71    public void onHttpPostDownloadCompleted(ContentViewCore view, String url,
72            String contentDisposition, String mimetype, String path,
73            long contentLength, boolean successful) {
74        ContentViewDownloadDelegate downloadDelagate = downloadDelegateFromView(view);
75
76        if (downloadDelagate != null) {
77            downloadDelagate.onHttpPostDownloadCompleted(
78                    url, mimetype, path, contentLength, successful);
79        }
80    }
81
82    // native methods
83    private native void nativeInit();
84}
85