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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/browser/ui/webui/favicon_source.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "chrome/browser/history/top_sites.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/url_constants.h"
#include "grit/locale_settings.h"
#include "grit/ui_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/layout.h"
#include "ui/base/resource/resource_bundle.h"
FaviconSource::FaviconSource(Profile* profile, IconType type)
: DataSource(type == FAVICON ? chrome::kChromeUIFaviconHost :
chrome::kChromeUITouchIconHost,
MessageLoop::current()) {
Init(profile, type);
}
FaviconSource::FaviconSource(Profile* profile,
IconType type,
const std::string& source_name)
: DataSource(source_name, MessageLoop::current()) {
Init(profile, type);
}
FaviconSource::~FaviconSource() {
}
void FaviconSource::Init(Profile* profile, IconType type) {
profile_ = profile->GetOriginalProfile();
icon_types_ = type == FAVICON ? history::FAVICON :
history::TOUCH_PRECOMPOSED_ICON | history::TOUCH_ICON |
history::FAVICON;
}
void FaviconSource::StartDataRequest(const std::string& path,
bool is_incognito,
int request_id) {
FaviconService* favicon_service =
profile_->GetFaviconService(Profile::EXPLICIT_ACCESS);
if (!favicon_service || path.empty()) {
SendDefaultResponse(request_id);
return;
}
FaviconService::Handle handle;
if (path.size() > 8 && path.substr(0, 8) == "iconurl/") {
// TODO : Change GetFavicon to support combination of IconType.
handle = favicon_service->GetFavicon(
GURL(path.substr(8)),
history::FAVICON,
&cancelable_consumer_,
base::Bind(&FaviconSource::OnFaviconDataAvailable,
base::Unretained(this)));
} else {
GURL url;
if (path.size() > 5 && path.substr(0, 5) == "size/") {
size_t slash = path.find("/", 5);
std::string size = path.substr(5, slash - 5);
int pixel_size = atoi(size.c_str());
CHECK(pixel_size == 32 || pixel_size == 16) <<
"only 32x32 and 16x16 icons are supported";
request_size_map_[request_id] = pixel_size;
url = GURL(path.substr(slash + 1));
} else {
// URL requests prefixed with "origin/" are converted to a form with an
// empty path and a valid scheme. (e.g., example.com -->
// http://example.com/ or http://example.com/a --> http://example.com/)
if (path.size() > 7 && path.substr(0, 7) == "origin/") {
std::string originalUrl = path.substr(7);
// If the original URL does not specify a scheme (e.g., example.com
// instead of http://example.com), add "http://" as a default.
if (!GURL(originalUrl).has_scheme())
originalUrl = "http://" + originalUrl;
// Strip the path beyond the top-level domain.
url = GURL(originalUrl).GetOrigin();
} else {
url = GURL(path);
}
request_size_map_[request_id] = 16;
}
// Intercept requests for prepopulated pages.
for (size_t i = 0; i < arraysize(history::kPrepopulatedPages); i++) {
if (url.spec() ==
l10n_util::GetStringUTF8(history::kPrepopulatedPages[i].url_id)) {
request_size_map_.erase(request_id);
SendResponse(request_id,
ResourceBundle::GetSharedInstance().LoadDataResourceBytes(
history::kPrepopulatedPages[i].favicon_id,
ui::SCALE_FACTOR_100P));
return;
}
}
// TODO(estade): fetch the requested size.
handle = favicon_service->GetFaviconForURL(
url,
icon_types_,
&cancelable_consumer_,
base::Bind(&FaviconSource::OnFaviconDataAvailable,
base::Unretained(this)));
}
// Attach the ChromeURLDataManager request ID to the history request.
cancelable_consumer_.SetClientData(favicon_service, handle, request_id);
}
std::string FaviconSource::GetMimeType(const std::string&) const {
// We need to explicitly return a mime type, otherwise if the user tries to
// drag the image they get no extension.
return "image/png";
}
bool FaviconSource::ShouldReplaceExistingSource() const {
// Leave the existing DataSource in place, otherwise we'll drop any pending
// requests on the floor.
return false;
}
void FaviconSource::OnFaviconDataAvailable(
FaviconService::Handle request_handle,
history::FaviconData favicon) {
FaviconService* favicon_service =
profile_->GetFaviconService(Profile::EXPLICIT_ACCESS);
int request_id = cancelable_consumer_.GetClientData(favicon_service,
request_handle);
if (favicon.is_valid()) {
// Forward the data along to the networking system.
SendResponse(request_id, favicon.image_data);
} else {
SendDefaultResponse(request_id);
}
}
void FaviconSource::SendDefaultResponse(int request_id) {
base::RefCountedMemory* bytes = NULL;
if (request_size_map_[request_id] == 32) {
if (!default_favicon_large_.get()) {
default_favicon_large_ =
ResourceBundle::GetSharedInstance().LoadDataResourceBytes(
IDR_DEFAULT_LARGE_FAVICON, ui::SCALE_FACTOR_100P);
}
bytes = default_favicon_large_;
} else {
if (!default_favicon_.get()) {
default_favicon_ =
ResourceBundle::GetSharedInstance().LoadDataResourceBytes(
IDR_DEFAULT_FAVICON, ui::SCALE_FACTOR_100P);
}
bytes = default_favicon_;
}
request_size_map_.erase(request_id);
SendResponse(request_id, bytes);
}
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