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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/ntp/suggestions_source_discovery.h"
#include <string>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/json/json_reader.h"
#include "base/stl_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/extensions/api/discovery/suggested_link.h"
#include "chrome/browser/extensions/api/discovery/suggested_links_registry.h"
#include "chrome/browser/extensions/api/discovery/suggested_links_registry_factory.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/webui/ntp/new_tab_ui.h"
#include "chrome/browser/ui/webui/ntp/suggestions_combiner.h"
#include "net/base/load_flags.h"
namespace {
typedef extensions::SuggestedLinksRegistry::SuggestedLinkList SuggestedLinkList;
// The weight used by the combiner to determine which ratio of suggestions
// should be obtained from this source.
const int kSuggestionsDiscoveryWeight = 1;
} // namespace
SuggestionsSourceDiscovery::SuggestionsSourceDiscovery(
const std::string& extension_id)
: combiner_(NULL),
extension_id_(extension_id),
debug_(false) {}
SuggestionsSourceDiscovery::~SuggestionsSourceDiscovery() {
STLDeleteElements(&items_);
}
void SuggestionsSourceDiscovery::SetDebug(bool enable) {
debug_ = enable;
}
inline int SuggestionsSourceDiscovery::GetWeight() {
return kSuggestionsDiscoveryWeight;
}
int SuggestionsSourceDiscovery::GetItemCount() {
return items_.size();
}
DictionaryValue* SuggestionsSourceDiscovery::PopItem() {
if (items_.empty())
return NULL;
DictionaryValue* item = items_.front();
items_.pop_front();
return item;
}
void SuggestionsSourceDiscovery::FetchItems(Profile* profile) {
DCHECK(combiner_);
extensions::SuggestedLinksRegistry* registry =
extensions::SuggestedLinksRegistryFactory::GetForProfile(profile);
const SuggestedLinkList* list = registry->GetAll(extension_id_);
items_.clear();
for (SuggestedLinkList::const_iterator it = list->begin();
it != list->end(); ++it) {
DictionaryValue* page_value = new DictionaryValue();
NewTabUI::SetUrlTitleAndDirection(page_value,
ASCIIToUTF16((*it)->link_text()),
GURL((*it)->link_url()));
page_value->SetDouble("score", (*it)->score());
const std::string& url_image = (*it)->url_image();
if (url_image.length() > 0)
page_value->SetString("urlImage", url_image);
items_.push_back(page_value);
}
combiner_->OnItemsReady();
}
void SuggestionsSourceDiscovery::SetCombiner(SuggestionsCombiner* combiner) {
DCHECK(!combiner_);
combiner_ = combiner;
}
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