1/*
2 * Copyright (C) 2003, 2004, 2005, 2012 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 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#import <Foundation/Foundation.h>
30#import <WebKitLegacy/WebDocument.h>
31
32@class NSMutableURLRequest;
33@class NSURLConnection;
34@class NSURLRequest;
35@class NSURLResponse;
36@class WebArchive;
37@class WebFrame;
38@class WebResource;
39
40/*!
41    @class WebDataSource
42    @discussion A WebDataSource represents the data associated with a web page.
43    A datasource has a WebDocumentRepresentation which holds an appropriate
44    representation of the data.  WebDataSources manage a hierarchy of WebFrames.
45    WebDataSources are typically related to a view by their containing WebFrame.
46*/
47@interface WebDataSource : NSObject
48{
49@private
50    void *_private;
51}
52
53/*!
54    @method initWithRequest:
55    @abstract The designated initializer for WebDataSource.
56    @param request The request to use in creating a datasource.
57    @result Returns an initialized WebDataSource.
58*/
59- (instancetype)initWithRequest:(NSURLRequest *)request;
60
61/*!
62    @property data
63    @abstract Returns the raw data associated with the datasource.  Returns nil
64    if the datasource hasn't loaded any data.
65   @discussion The data will be incomplete until the datasource has completely loaded.
66*/
67@property (nonatomic, readonly, copy) NSData *data;
68
69/*!
70    @property representation
71    @abstract The representation associated with this datasource.
72    Returns nil if the datasource hasn't created its representation.
73    @discussion A representation holds a type specific representation
74    of the datasource's data.  The representation class is determined by mapping
75    a MIME type to a class.  The representation is created once the MIME type
76    of the datasource content has been determined.
77*/
78@property (nonatomic, readonly, strong) id<WebDocumentRepresentation> representation;
79
80/*!
81    @property webFrame
82    @abstract The frame that represents this data source.
83*/
84@property (nonatomic, readonly, strong) WebFrame *webFrame;
85
86/*!
87    @property initialRequest
88    @abstract A reference to the original request that created the
89    datasource.  This request will be unmodified by WebKit.
90*/
91@property (nonatomic, readonly, strong) NSURLRequest *initialRequest;
92
93/*!
94    @property request
95    @abstract The request that was used to create this datasource.
96*/
97@property (nonatomic, readonly, strong) NSMutableURLRequest *request;
98
99/*!
100    @property response
101    @abstract The NSURLResponse for the data source.
102*/
103@property (nonatomic, readonly, strong) NSURLResponse *response;
104
105/*!
106    @property textEncodingName
107    @abstract Returns either the override encoding, as set on the WebView for this
108    dataSource or the encoding from the response.
109*/
110@property (nonatomic, readonly, copy) NSString *textEncodingName;
111
112/*!
113    @property isLoading
114    @abstract Returns YES if there are any pending loads.
115*/
116@property (nonatomic, getter=isLoading, readonly) BOOL loading;
117
118/*!
119    @property pageTitle
120    @abstract The page title or nil.
121*/
122@property (nonatomic, readonly, copy) NSString *pageTitle;
123
124/*!
125    @property unreachableURL
126    @abstract The unreachableURL for which this dataSource is showing alternate content, or nil.
127    @discussion This will be non-nil only for dataSources created by calls to the
128    WebFrame method loadAlternateHTMLString:baseURL:forUnreachableURL:.
129*/
130@property (nonatomic, readonly, strong) NSURL *unreachableURL;
131
132/*!
133    @property webArchive
134    @abstract A WebArchive representing the data source, its subresources and child frames.
135    @description This method constructs a WebArchive using the original downloaded data.
136    In the case of HTML, if the current state of the document is preferred, webArchive should be
137    called on the DOM document instead.
138*/
139@property (nonatomic, readonly, strong) WebArchive *webArchive;
140
141/*!
142    @property mainResource
143    @abstract A WebResource representing the data source.
144    @description This method constructs a WebResource using the original downloaded data.
145    This method can be used to construct a WebArchive in case the archive returned by
146    WebDataSource's webArchive isn't sufficient.
147*/
148@property (nonatomic, readonly, strong) WebResource *mainResource;
149
150/*!
151    @property subresources
152    @abstract All the subresources associated with the data source.
153    @description The returned array only contains subresources that have fully downloaded.
154*/
155@property (nonatomic, readonly, copy) NSArray *subresources;
156
157/*!
158    method subresourceForURL:
159    @abstract Returns a subresource for a given URL.
160    @param URL The URL of the subresource.
161    @description Returns non-nil if the data source has fully downloaded a subresource with the given URL.
162*/
163- (WebResource *)subresourceForURL:(NSURL *)URL;
164
165/*!
166    @method addSubresource:
167    @abstract Adds a subresource to the data source.
168    @param subresource The subresource to be added.
169    @description addSubresource: adds a subresource to the data source's list of subresources.
170    Later, if something causes the data source to load the URL of the subresource, the data source
171    will load the data from the subresource instead of from the network. For example, if one wants to add
172    an image that is already downloaded to a web page, addSubresource: can be called so that the data source
173    uses the downloaded image rather than accessing the network. NOTE: If the data source already has a
174    subresource with the same URL, addSubresource: will replace it.
175*/
176- (void)addSubresource:(WebResource *)subresource;
177
178@end
179