1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/webapps/renderer/web_page_metadata_extraction.h"
#include <stddef.h>
#include <string>
#include <vector>
#include "components/webapps/common/web_page_metadata.mojom.h"
#include "third_party/blink/public/platform/web_icon_sizes_parser.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/platform/web_url.h"
#include "third_party/blink/public/web/web_document.h"
#include "third_party/blink/public/web/web_element.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "third_party/blink/public/web/web_node.h"
#include "url/gurl.h"
using blink::WebDocument;
using blink::WebElement;
using blink::WebLocalFrame;
using blink::WebNode;
using blink::WebString;
namespace webapps {
namespace {
void AddInstallIcon(const WebElement& link,
std::vector<mojom::WebPageIconInfoPtr>* icons) {
WebString href = link.GetAttribute("href");
if (href.IsNull() || href.IsEmpty())
return;
// Get complete url.
GURL url = link.GetDocument().CompleteURL(href);
if (!url.is_valid())
return;
mojom::WebPageIconInfoPtr icon_info(mojom::WebPageIconInfo::New());
if (link.HasAttribute("sizes")) {
std::vector<gfx::Size> icon_sizes =
blink::WebIconSizesParser::ParseIconSizes(link.GetAttribute("sizes"));
if (icon_sizes.size() == 1 && icon_sizes[0].width() != 0 &&
icon_sizes[0].height() == icon_sizes[0].width()) {
icon_info->square_size_px = icon_sizes[0].width();
}
}
icon_info->url = url;
icons->push_back(std::move(icon_info));
}
} // namespace
mojom::WebPageMetadataPtr ExtractWebPageMetadata(WebLocalFrame* frame) {
mojom::WebPageMetadataPtr metadata(mojom::WebPageMetadata::New());
WebDocument document = frame->GetDocument();
if (document.IsNull())
return metadata;
WebElement head = document.Head();
if (head.IsNull()) {
return metadata;
}
metadata->title = document.Title().Utf16();
GURL document_url = document.Url();
for (WebNode child = head.FirstChild(); !child.IsNull();
child = child.NextSibling()) {
if (!child.IsElementNode())
continue;
WebElement elem = child.To<WebElement>();
if (elem.HasHTMLTagName("link")) {
std::string rel = elem.GetAttribute("rel").Utf8();
// "rel" attribute may use either "icon" or "shortcut icon".
// see also
// <http://en.wikipedia.org/wiki/Favicon>
// <http://dev.w3.org/html5/spec/Overview.html#rel-icon>
//
// Bookmark apps also support "apple-touch-icon" and
// "apple-touch-icon-precomposed".
if (base::EqualsCaseInsensitiveASCII(rel, "icon") ||
base::EqualsCaseInsensitiveASCII(rel, "shortcut icon") ||
base::EqualsCaseInsensitiveASCII(rel, "apple-touch-icon") ||
base::EqualsCaseInsensitiveASCII(rel,
"apple-touch-icon-precomposed")) {
AddInstallIcon(elem, &metadata->icons);
}
} else if (elem.HasHTMLTagName("meta") && elem.HasAttribute("name")) {
std::string name = elem.GetAttribute("name").Utf8();
WebString content = elem.GetAttribute("content");
if (name == "application-name") {
metadata->application_name = content.Utf16();
} else if (name == "description") {
metadata->description = content.Utf16();
} else if (name == "application-url") {
std::string url = content.Utf8();
metadata->application_url =
document_url.is_valid() ? document_url.Resolve(url) : GURL(url);
if (!metadata->application_url.is_valid())
metadata->application_url = GURL();
} else if (name == "mobile-web-app-capable" &&
base::EqualsCaseInsensitiveASCII(content.Utf16(), "yes")) {
metadata->mobile_capable = mojom::WebPageMobileCapable::ENABLED;
} else if (name == "apple-mobile-web-app-capable" &&
base::EqualsCaseInsensitiveASCII(content.Utf16(), "yes") &&
metadata->mobile_capable ==
mojom::WebPageMobileCapable::UNSPECIFIED) {
metadata->mobile_capable = mojom::WebPageMobileCapable::ENABLED_APPLE;
}
}
}
return metadata;
}
} // namespace webapps
|
