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// Copyright (c) 2009 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/possible_url_model.h"
#include "app/gfx/codec/png_codec.h"
#include "app/l10n_util.h"
#include "app/resource_bundle.h"
#include "app/table_model_observer.h"
#include "chrome/browser/cancelable_request.h"
#include "chrome/browser/favicon_service.h"
#include "chrome/browser/profile.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/pref_service.h"
#include "grit/app_resources.h"
#include "grit/generated_resources.h"
using base::Time;
using base::TimeDelta;
namespace {
// The default favicon.
SkBitmap* default_fav_icon = NULL;
// How long we query entry points for.
const int kPossibleURLTimeScope = 30;
} // anonymous namespace
PossibleURLModel::PossibleURLModel()
: profile_(NULL),
observer_(NULL) {
if (!default_fav_icon) {
ResourceBundle& rb = ResourceBundle::GetSharedInstance();
default_fav_icon = rb.GetBitmapNamed(IDR_DEFAULT_FAVICON);
}
}
void PossibleURLModel::Reload(Profile *profile) {
profile_ = profile;
consumer_.CancelAllRequests();
HistoryService* hs =
profile->GetHistoryService(Profile::EXPLICIT_ACCESS);
if (hs) {
history::QueryOptions options;
options.end_time = Time::Now();
options.begin_time =
options.end_time - TimeDelta::FromDays(kPossibleURLTimeScope);
options.max_count = 50;
hs->QueryHistory(std::wstring(), options, &consumer_,
NewCallback(this, &PossibleURLModel::OnHistoryQueryComplete));
}
}
void PossibleURLModel::OnHistoryQueryComplete(HistoryService::Handle h,
history::QueryResults* result) {
results_.resize(result->size());
std::wstring languages = profile_
? profile_->GetPrefs()->GetString(prefs::kAcceptLanguages)
: std::wstring();
for (size_t i = 0; i < result->size(); ++i) {
results_[i].url = (*result)[i].url();
results_[i].index = i;
results_[i].display_url =
gfx::SortedDisplayURL((*result)[i].url(), languages);
results_[i].title = (*result)[i].title();
}
// The old version of this code would filter out all but the most recent
// visit to each host, plus all typed URLs and AUTO_BOOKMARK transitions. I
// think this dialog has a lot of work, and I'm not sure those old
// conditions are correct (the results look about equal quality for my
// history with and without those conditions), so I'm not spending time
// re-implementing them here. They used to be implemented in the history
// service, but I think they should be implemented here because that was
// pretty specific behavior that shouldn't be generally exposed.
fav_icon_map_.clear();
if (observer_)
observer_->OnModelChanged();
}
const GURL& PossibleURLModel::GetURL(int row) {
if (row < 0 || row >= RowCount()) {
NOTREACHED();
return GURL::EmptyGURL();
}
return results_[row].url;
}
const std::wstring& PossibleURLModel::GetTitle(int row) {
if (row < 0 || row >= RowCount()) {
NOTREACHED();
return EmptyWString();
}
return results_[row].title;
}
std::wstring PossibleURLModel::GetText(int row, int col_id) {
if (row < 0 || row >= RowCount()) {
NOTREACHED();
return std::wstring();
}
if (col_id == IDS_ASI_PAGE_COLUMN) {
const std::wstring& title = GetTitle(row);
// TODO(xji): Consider adding a special case if the title text is a URL,
// since those should always have LTR directionality. Please refer to
// http://crbug.com/6726 for more information.
std::wstring localized_title;
if (l10n_util::AdjustStringForLocaleDirection(title, &localized_title))
return localized_title;
return title;
}
// TODO(brettw): this should probably pass the GURL up so the URL elider
// can be used at a higher level when we know the width.
const string16& url = results_[row].display_url.display_url();
if (l10n_util::GetTextDirection() == l10n_util::LEFT_TO_RIGHT)
return UTF16ToWideHack(url);
// Force URL to be LTR.
std::wstring localized_url = UTF16ToWideHack(url);
l10n_util::WrapStringWithLTRFormatting(&localized_url);
return localized_url;
}
SkBitmap PossibleURLModel::GetIcon(int row) {
if (row < 0 || row >= RowCount()) {
NOTREACHED();
return *default_fav_icon;
}
Result& result = results_[row];
FavIconMap::iterator i = fav_icon_map_.find(result.index);
if (i != fav_icon_map_.end()) {
// We already requested the favicon, return it.
if (!i->second.isNull())
return i->second;
} else if (profile_) {
FaviconService* favicon_service =
profile_->GetFaviconService(Profile::EXPLICIT_ACCESS);
if (favicon_service) {
CancelableRequestProvider::Handle h =
favicon_service->GetFaviconForURL(
result.url, &consumer_,
NewCallback(this, &PossibleURLModel::OnFavIconAvailable));
consumer_.SetClientData(favicon_service, h, result.index);
// Add an entry to the map so that we don't attempt to request the
// favicon again.
fav_icon_map_[result.index] = SkBitmap();
}
}
return *default_fav_icon;
}
int PossibleURLModel::CompareValues(int row1, int row2, int column_id) {
if (column_id == IDS_ASI_URL_COLUMN) {
return results_[row1].display_url.Compare(
results_[row2].display_url, GetCollator());
}
return TableModel::CompareValues(row1, row2, column_id);
}
void PossibleURLModel::OnFavIconAvailable(
FaviconService::Handle h,
bool fav_icon_available,
scoped_refptr<RefCountedBytes> data,
bool expired,
GURL icon_url) {
if (profile_) {
FaviconService* favicon_service =
profile_->GetFaviconService(Profile::EXPLICIT_ACCESS);
size_t index = consumer_.GetClientData(favicon_service, h);
if (fav_icon_available) {
// The decoder will leave our bitmap empty on error.
gfx::PNGCodec::Decode(data->front(), data->size(),
&(fav_icon_map_[index]));
// Notify the observer.
if (!fav_icon_map_[index].isNull() && observer_)
observer_->OnItemsChanged(static_cast<int>(index), 1);
}
}
}
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