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// Copyright 2017 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/ui/tab_ui_helper.h"
#include "base/feature_list.h"
#include "base/functional/bind.h"
#include "build/build_config.h"
#include "chrome/browser/favicon/favicon_utils.h"
#include "chrome/browser/sessions/session_restore.h"
#include "chrome/browser/ui/tabs/public/tab_features.h"
#include "chrome/browser/ui/tabs/saved_tab_groups/saved_tab_group_web_contents_listener.h"
#include "chrome/grit/generated_resources.h"
#include "components/tabs/public/tab_interface.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/resources/grit/ui_resources.h"
namespace {
// Whether the throbber should be shown for a restored tab after it becomes
// visible, instead of when it's active in the tab strip (this signal is known
// to be broken crbug.com/413080225#comment8).
BASE_FEATURE(kSessionRestoreShowThrobberOnVisible,
"SessionRestoreShowThrobberOnVisible",
base::FEATURE_DISABLED_BY_DEFAULT);
} // namespace
TabUIHelper::TabUIHelper(tabs::TabInterface& tab_interface)
: ContentsObservingTabFeature(tab_interface) {}
TabUIHelper::~TabUIHelper() = default;
std::u16string TabUIHelper::GetTitle() const {
tabs::TabInterface* const tab_interface =
tabs::TabInterface::GetFromContents(web_contents());
const tab_groups::SavedTabGroupWebContentsListener* wc_listener =
tab_interface->GetTabFeatures()->saved_tab_group_web_contents_listener();
if (wc_listener) {
if (const std::optional<tab_groups::DeferredTabState>& deferred_tab_state =
wc_listener->deferred_tab_state()) {
return deferred_tab_state.value().title();
}
}
const std::u16string& contents_title = web_contents()->GetTitle();
if (!contents_title.empty()) {
return contents_title;
}
#if BUILDFLAG(IS_MAC)
return l10n_util::GetStringUTF16(IDS_BROWSER_WINDOW_MAC_TAB_UNTITLED);
#else
return std::u16string();
#endif
}
ui::ImageModel TabUIHelper::GetFavicon() const {
tabs::TabInterface* const tab_interface =
tabs::TabInterface::GetFromContents(web_contents());
const tab_groups::SavedTabGroupWebContentsListener* wc_listener =
tab_interface->GetTabFeatures()->saved_tab_group_web_contents_listener();
if (wc_listener) {
if (const std::optional<tab_groups::DeferredTabState>& deferred_tab_state =
wc_listener->deferred_tab_state()) {
return deferred_tab_state.value().favicon();
}
}
return ui::ImageModel::FromImage(
favicon::TabFaviconFromWebContents(web_contents()));
}
bool TabUIHelper::ShouldHideThrobber() const {
// We want to hide a background tab's throbber during page load if it is
// created by session restore. A restored tab's favicon is already fetched
// by |SessionRestoreDelegate|.
if (created_by_session_restore_ && !was_active_at_least_once_) {
return true;
}
return false;
}
void TabUIHelper::SetWasActiveAtLeastOnce() {
if (!base::FeatureList::IsEnabled(kSessionRestoreShowThrobberOnVisible)) {
was_active_at_least_once_ = true;
}
}
void TabUIHelper::DidStopLoading() {
// Reset the properties after the initial navigation finishes loading, so that
// latter navigations are not affected. Note that the prerendered page won't
// reset the properties because DidStopLoading is not called for prerendering.
created_by_session_restore_ = false;
}
void TabUIHelper::OnVisibilityChanged(content::Visibility visiblity) {
if (base::FeatureList::IsEnabled(kSessionRestoreShowThrobberOnVisible) &&
visiblity == content::Visibility::VISIBLE) {
was_active_at_least_once_ = true;
}
}
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