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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/segmentation_platform/client_util/local_tab_handler.h"
#include "base/time/time.h"
#include "components/segmentation_platform/embedder/input_delegate/tab_session_source.h"
#include "components/segmentation_platform/embedder/tab_fetcher.h"
#include "components/segmentation_platform/internal/execution/processing/feature_processor_state.h"
#include "components/segmentation_platform/public/input_delegate.h"
#include "content/public/browser/navigation_controller.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/web_contents.h"
#if BUILDFLAG(IS_ANDROID)
#include "chrome/browser/android/tab_android.h"
#include "chrome/browser/ui/android/tab_model/tab_model.h"
#include "chrome/browser/ui/android/tab_model/tab_model_list.h"
#else // BUILDFLAG(IS_ANDROID)
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/sync/browser_synced_tab_delegate.h"
#endif // BUILDFLAG(IS_ANDROID)
namespace segmentation_platform::processing {
namespace {
GURL GetLocalTabURL(const TabFetcher::Tab& tab) {
if (tab.webcontents) {
return tab.webcontents->GetURL();
}
#if BUILDFLAG(IS_ANDROID)
if (tab.tab_android) {
return tab.tab_android->GetURL();
}
#endif
return GURL();
}
// Returns the time since last time the tab was modified.
base::TimeDelta GetLocalTimeSinceModified(const TabFetcher::Tab& tab) {
base::Time last_modified_timestamp;
if (tab.webcontents) {
auto* last_entry = tab.webcontents->GetController().GetLastCommittedEntry();
if (last_entry) {
last_modified_timestamp = last_entry->GetTimestamp();
}
}
#if BUILDFLAG(IS_ANDROID)
if (tab.tab_android) {
last_modified_timestamp = tab.tab_android->GetLastShownTimestamp();
}
#endif
return base::Time::Now() - last_modified_timestamp;
}
#if BUILDFLAG(IS_ANDROID)
// Returns a list of all tabs from tab model.
std::vector<TabFetcher::TabEntry> FetchTabs(const Profile* profile) {
std::vector<TabFetcher::TabEntry> tabs;
for (const TabModel* model : TabModelList::models()) {
if (model->GetProfile() != profile) {
continue;
}
// Store count in local variable since it makes expensive JNI call.
int count = model->GetTabCount();
for (int i = 0; i < count; ++i) {
auto* web_contents = model->GetWebContentsAt(i);
auto* tab_android = model->GetTabAt(i);
auto tab_id = tab_android->GetSyncedTabDelegate()->GetSessionId();
tabs.emplace_back(tab_id, web_contents, tab_android);
}
}
return tabs;
}
TabFetcher::Tab FindLocalTabAndroid(const Profile* profile,
const TabFetcher::TabEntry& entry) {
for (const TabModel* model : TabModelList::models()) {
if (model->GetProfile() != profile) {
continue;
}
// Store count in local variable since it makes expensive JNI call.
int count = model->GetTabCount();
for (int i = 0; i < count; ++i) {
auto* tab_android = model->GetTabAt(i);
SessionID id = tab_android->GetSyncedTabDelegate()->GetSessionId();
if (id != entry.tab_id) {
continue;
}
TabFetcher::Tab result;
result.webcontents = model->GetWebContentsAt(i);
result.tab_android = tab_android;
result.time_since_modified = GetLocalTimeSinceModified(result);
result.tab_url = GetLocalTabURL(result);
return result;
}
}
return TabFetcher::Tab();
}
#else // BUILDFLAG(IS_ANDROID)
// Returns a list of all tabs from tab strip model.
std::vector<TabFetcher::TabEntry> FetchTabs(const Profile* profile) {
const BrowserList* browser_list = BrowserList::GetInstance();
std::vector<TabFetcher::TabEntry> tabs;
for (const Browser* browser : *browser_list) {
if (browser->profile() != profile) {
continue;
}
for (int i = 0; i < browser->tab_strip_model()->GetTabCount(); ++i) {
auto* web_contents = browser->tab_strip_model()->GetWebContentsAt(i);
auto* tab_delegate =
BrowserSyncedTabDelegate::FromWebContents(web_contents);
tabs.emplace_back(tab_delegate->GetSessionId(), web_contents, nullptr);
}
}
return tabs;
}
#endif // BUILDFLAG(IS_ANDROID)
} // namespace
LocalTabHandler::LocalTabHandler(
sync_sessions::SessionSyncService* session_sync_service,
Profile* profile)
: TabFetcher(session_sync_service), profile_(profile) {}
LocalTabHandler::~LocalTabHandler() = default;
bool LocalTabHandler::FillAllLocalTabsFromTabModel(
std::vector<TabEntry>& tabs) {
tabs = FetchTabs(profile_);
return true;
}
TabFetcher::Tab LocalTabHandler::FindLocalTab(const TabEntry& entry) {
#if BUILDFLAG(IS_ANDROID)
return FindLocalTabAndroid(profile_, entry);
#else
TabFetcher::Tab result;
// Fetch all tabs and verify if the `entry` is still valid.
auto all_local_tabs = FetchTabs(profile_);
for (auto& tab : all_local_tabs) {
if (tab.tab_id == entry.tab_id) {
result.webcontents =
reinterpret_cast<content::WebContents*>(tab.web_contents_data.get());
result.tab_android =
reinterpret_cast<TabAndroid*>(tab.tab_android_data.get());
result.time_since_modified = GetLocalTimeSinceModified(result);
result.tab_url = GetLocalTabURL(result);
break;
}
}
return result;
#endif
}
LocalTabSource::LocalTabSource(
sync_sessions::SessionSyncService* session_sync_service,
TabFetcher* tab_fetcher)
: TabSessionSource(session_sync_service, tab_fetcher) {}
LocalTabSource::~LocalTabSource() = default;
void LocalTabSource::AddLocalTabInfo(
const TabFetcher::Tab& tab,
FeatureProcessorState& feature_processor_state,
Tensor& inputs) {
inputs[TabSessionSource::kInputLocalTabTimeSinceModified] =
ProcessedValue::FromFloat(
BucketizeExp(GetLocalTimeSinceModified(tab).InSeconds(), /*max_buckets*/50));
}
} // namespace segmentation_platform::processing
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