1/*
2 * Copyright (C) 2013 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26WebInspector.ApplicationCacheManager = function()
27{
28    WebInspector.Object.call(this);
29
30    if (window.ApplicationCacheAgent)
31        ApplicationCacheAgent.enable();
32
33    WebInspector.Frame.addEventListener(WebInspector.Frame.Event.MainResourceDidChange, this._mainResourceDidChange, this);
34    WebInspector.Frame.addEventListener(WebInspector.Frame.Event.ChildFrameWasRemoved, this._childFrameWasRemoved, this);
35
36    this._online = true;
37
38    this.initialize();
39};
40
41WebInspector.ApplicationCacheManager.Event = {
42    Cleared: "application-cache-manager-cleared",
43    FrameManifestAdded: "application-cache-manager-frame-manifest-added",
44    FrameManifestRemoved: "application-cache-manager-frame-manifest-removed",
45    FrameManifestStatusChanged: "application-cache-manager-frame-manifest-status-changed",
46    NetworkStateUpdated: "application-cache-manager-network-state-updated"
47};
48
49WebInspector.ApplicationCacheManager.Status = {
50    Uncached: 0,
51    Idle: 1,
52    Checking: 2,
53    Downloading: 3,
54    UpdateReady: 4,
55    Obsolete: 5
56};
57
58WebInspector.ApplicationCacheManager.prototype = {
59    constructor: WebInspector.ApplicationCacheManager,
60
61    // Public
62
63    initialize: function()
64    {
65        this._applicationCacheObjects = [];
66
67        if (window.ApplicationCacheAgent)
68            ApplicationCacheAgent.getFramesWithManifests(this._framesWithManifestsLoaded.bind(this));
69    },
70
71    networkStateUpdated: function(isNowOnline)
72    {
73        this._online = isNowOnline;
74
75        this.dispatchEventToListeners(WebInspector.ApplicationCacheManager.Event.NetworkStateUpdated, {online: this._online});
76    },
77
78    get online()
79    {
80        return this._online;
81    },
82
83    applicationCacheStatusUpdated: function(frameId, manifestURL, status)
84    {
85        var frame = WebInspector.frameResourceManager.frameForIdentifier(frameId);
86        if (!frame)
87            return;
88
89        this._frameManifestUpdated(frame, manifestURL, status);
90    },
91
92    requestApplicationCache: function(frame, callback)
93    {
94        function callbackWrapper(error, applicationCache)
95        {
96            if (error) {
97                callback(null);
98                return;
99            }
100
101            callback(applicationCache);
102        }
103
104        ApplicationCacheAgent.getApplicationCacheForFrame(frame.id, callbackWrapper);
105    },
106
107    // Private
108
109    _mainResourceDidChange: function(event)
110    {
111        console.assert(event.target instanceof WebInspector.Frame);
112
113        if (event.target.isMainFrame()) {
114            // If we are dealing with the main frame, we want to clear our list of objects, because we are navigating to a new page.
115            this.initialize();
116
117            this.dispatchEventToListeners(WebInspector.ApplicationCacheManager.Event.Cleared);
118
119            return;
120        }
121
122        ApplicationCacheAgent.getManifestForFrame(event.target.id, this._manifestForFrameLoaded.bind(this, event.target.id));
123    },
124
125    _childFrameWasRemoved: function(event)
126    {
127        this._frameManifestRemoved(event.data.childFrame);
128    },
129
130    _manifestForFrameLoaded: function(frameId, error, manifestURL)
131    {
132        if (error)
133            return;
134
135        var frame = WebInspector.frameResourceManager.frameForIdentifier(frameId);
136        if (!frame)
137            return;
138
139        if (!manifestURL)
140            this._frameManifestRemoved(frame);
141    },
142
143    _framesWithManifestsLoaded: function(error, framesWithManifests)
144    {
145        if (error)
146            return;
147
148        for (var i = 0; i < framesWithManifests.length; ++i) {
149            var frame = WebInspector.frameResourceManager.frameForIdentifier(framesWithManifests[i].frameId);
150            if (!frame)
151                continue;
152
153            this._frameManifestUpdated(frame, framesWithManifests[i].manifestURL, framesWithManifests[i].status);
154        }
155    },
156
157    _frameManifestUpdated: function(frame, manifestURL, status)
158    {
159        if (status === WebInspector.ApplicationCacheManager.Status.Uncached) {
160            this._frameManifestRemoved(frame);
161            return;
162        }
163
164        if (!manifestURL)
165            return;
166
167        var manifestFrame = this._applicationCacheObjects[frame.id];
168        if (manifestFrame && manifestURL !== manifestFrame.manifest.manifestURL)
169            this._frameManifestRemoved(frame);
170
171        var oldStatus = manifestFrame ? manifestFrame.status : -1;
172        var statusChanged = manifestFrame && status !== oldStatus;
173        if (manifestFrame)
174            manifestFrame.status = status;
175
176        if (!this._applicationCacheObjects[frame.id]) {
177            var cacheManifest = new WebInspector.ApplicationCacheManifest(manifestURL);
178            this._applicationCacheObjects[frame.id] = new WebInspector.ApplicationCacheFrame(frame, cacheManifest, status);
179
180            this.dispatchEventToListeners(WebInspector.ApplicationCacheManager.Event.FrameManifestAdded, {frameManifest: this._applicationCacheObjects[frame.id]});
181        }
182
183        if (statusChanged)
184            this.dispatchEventToListeners(WebInspector.ApplicationCacheManager.Event.FrameManifestStatusChanged, {frameManifest: this._applicationCacheObjects[frame.id]});
185    },
186
187    _frameManifestRemoved: function(frame)
188    {
189        if (!this._applicationCacheObjects[frame.id])
190            return;
191
192        delete this._applicationCacheObjects[frame.id];
193
194        this.dispatchEventToListeners(WebInspector.ApplicationCacheManager.Event.FrameManifestRemoved, {frame: frame});
195    }
196};
197
198WebInspector.ApplicationCacheManager.prototype.__proto__ = WebInspector.Object.prototype;
199