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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/renderer/web_apps.h"
#include <stddef.h>
#include <string>
#include <vector>
#include "base/strings/string16.h"
#include "build/build_config.h"
#include "chrome/common/web_application_info.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 "ui/gfx/geometry/size.h"
#include "url/gurl.h"
using blink::WebDocument;
using blink::WebElement;
using blink::WebLocalFrame;
using blink::WebNode;
using blink::WebString;
namespace web_apps {
namespace {
void AddInstallIcon(const WebElement& link,
std::vector<WebApplicationIconInfo>* 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;
WebApplicationIconInfo icon_info;
if (link.HasAttribute("sizes")) {
blink::WebVector<blink::WebSize> 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(icon_info);
}
} // namespace
void ParseWebAppFromWebDocument(WebLocalFrame* frame,
WebApplicationInfo* app_info) {
WebDocument document = frame->GetDocument();
if (document.IsNull())
return;
WebElement head = document.Head();
if (head.IsNull())
return;
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::LowerCaseEqualsASCII(rel, "icon") ||
base::LowerCaseEqualsASCII(rel, "shortcut icon") ||
base::LowerCaseEqualsASCII(rel, "apple-touch-icon") ||
base::LowerCaseEqualsASCII(rel, "apple-touch-icon-precomposed")) {
AddInstallIcon(elem, &app_info->icon_infos);
}
} else if (elem.HasHTMLTagName("meta") && elem.HasAttribute("name")) {
std::string name = elem.GetAttribute("name").Utf8();
WebString content = elem.GetAttribute("content");
if (name == "application-name") {
app_info->title = content.Utf16();
} else if (name == "description") {
app_info->description = content.Utf16();
} else if (name == "application-url") {
std::string url = content.Utf8();
app_info->app_url = document_url.is_valid() ?
document_url.Resolve(url) : GURL(url);
if (!app_info->app_url.is_valid())
app_info->app_url = GURL();
} else if (name == "mobile-web-app-capable" &&
base::LowerCaseEqualsASCII(content.Utf16(), "yes")) {
app_info->mobile_capable = WebApplicationInfo::MOBILE_CAPABLE;
} else if (name == "apple-mobile-web-app-capable" &&
base::LowerCaseEqualsASCII(content.Utf16(), "yes") &&
app_info->mobile_capable ==
WebApplicationInfo::MOBILE_CAPABLE_UNSPECIFIED) {
app_info->mobile_capable = WebApplicationInfo::MOBILE_CAPABLE_APPLE;
}
}
}
}
} // namespace web_apps
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