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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/infobars/core/infobar_manager.h"
#include <algorithm>
#include <utility>
#include "base/command_line.h"
#include "base/observer_list.h"
#include "build/branding_buildflags.h"
#include "components/infobars/core/confirm_infobar_delegate.h"
#include "components/infobars/core/infobar.h"
#include "components/infobars/core/infobars_switches.h"
#include "ui/gfx/switches.h"
namespace infobars {
namespace {
bool DisableInfoBars() {
const auto* const command_line = base::CommandLine::ForCurrentProcess();
// Infobars can only be disabled when Chrome is running in headless mode and
// in Chrome for Testing.
return command_line->HasSwitch(::switches::kDisableInfoBars)
#if !BUILDFLAG(CHROME_FOR_TESTING)
&& command_line->HasSwitch(::switches::kHeadless)
#endif
;
}
} // namespace
// InfoBarManager::Observer ---------------------------------------------------
InfoBarManager::Observer::~Observer() = default;
void InfoBarManager::Observer::OnInfoBarAdded(InfoBar* infobar) {}
void InfoBarManager::Observer::OnInfoBarRemoved(InfoBar* infobar,
bool animate) {}
void InfoBarManager::Observer::OnInfoBarReplaced(InfoBar* old_infobar,
InfoBar* new_infobar) {}
void InfoBarManager::Observer::OnManagerShuttingDown(InfoBarManager* manager) {}
// InfoBarManager --------------------------------------------------------------
InfoBar* InfoBarManager::AddInfoBarInternal(
std::unique_ptr<InfoBar> new_infobar,
bool replace_existing) {
DCHECK(new_infobar);
for (infobars::InfoBar* infobar : infobars_) {
if (infobar->delegate()->EqualsDelegate(new_infobar->delegate())) {
DCHECK_NE(infobar->delegate(), new_infobar->delegate());
return replace_existing ? ReplaceInfoBar(infobar, std::move(new_infobar))
: nullptr;
}
}
if (!ShouldShowInfoBar(new_infobar.get())) {
return nullptr;
}
InfoBar* infobar_ptr = new_infobar.release();
infobars_.push_back(infobar_ptr);
infobar_ptr->SetOwner(this);
for (Observer& observer : observer_list_) {
observer.OnInfoBarAdded(infobar_ptr);
}
return infobar_ptr;
}
void InfoBarManager::RemoveInfoBar(InfoBar* infobar) {
RemoveInfoBarInternal(infobar, true);
}
void InfoBarManager::RemoveAllInfoBars(bool animate) {
while (!infobars_.empty()) {
RemoveInfoBarInternal(infobars_.back(), animate);
}
}
InfoBar* InfoBarManager::ReplaceInfoBarInternal(
InfoBar* old_infobar,
std::unique_ptr<InfoBar> new_infobar) {
DCHECK(old_infobar);
DCHECK(new_infobar);
if (!ShouldShowInfoBar(new_infobar.get())) {
RemoveInfoBar(old_infobar);
return nullptr;
}
auto i = std::ranges::find(infobars_, old_infobar);
CHECK(i != infobars_.end());
InfoBar* new_infobar_ptr = new_infobar.release();
i = infobars_.insert(i, new_infobar_ptr);
new_infobar_ptr->SetOwner(this);
// Remove the old infobar before notifying, so that if any observers call back
// to AddInfoBar() or similar, we don't dupe-check against this infobar.
infobars_.erase(++i);
for (Observer& observer : observer_list_) {
observer.OnInfoBarReplaced(old_infobar, new_infobar_ptr);
}
old_infobar->CloseSoon();
return new_infobar_ptr;
}
void InfoBarManager::AddObserver(Observer* obs) {
observer_list_.AddObserver(obs);
}
void InfoBarManager::RemoveObserver(Observer* obs) {
observer_list_.RemoveObserver(obs);
}
InfoBarManager::InfoBarManager() : infobars_enabled_(!DisableInfoBars()) {}
InfoBarManager::~InfoBarManager() = default;
void InfoBarManager::ShutDown() {
// Destroy all remaining InfoBars. It's important to not animate here so that
// we guarantee that we'll delete all delegates before we do anything else.
RemoveAllInfoBars(false);
for (Observer& observer : observer_list_) {
observer.OnManagerShuttingDown(this);
}
}
void InfoBarManager::OnNavigation(
const InfoBarDelegate::NavigationDetails& details) {
// NOTE: It is not safe to change the following code to count upwards or
// use iterators, as the RemoveInfoBar() call synchronously modifies our
// delegate list.
for (size_t i = infobars_.size(); i > 0; --i) {
InfoBar* infobar = infobars_[i - 1];
if (infobar->delegate()->ShouldExpire(details)) {
RemoveInfoBar(infobar);
}
}
}
void InfoBarManager::RemoveInfoBarInternal(InfoBar* infobar, bool animate) {
DCHECK(infobar);
auto i = std::ranges::find(infobars_, infobar);
// TODO(crbug.com/): Temporarily a CHECK instead of a DCHECK CHECK() in order
// to help diagnose suspected memory smashing caused by invalid call of this
// method happening in production code on iOS.
CHECK(i != infobars_.end());
// Remove the infobar before notifying, so that if any observers call back to
// AddInfoBar() or similar, we don't dupe-check against this infobar.
infobars_.erase(i);
// This notification must happen before the call to CloseSoon() below, since
// observers may want to access |infobar| and that call can delete it.
for (Observer& observer : observer_list_) {
observer.OnInfoBarRemoved(infobar, animate);
}
infobar->CloseSoon();
}
bool InfoBarManager::ShouldHideInFullscreen() const {
return std::all_of(infobars_.begin(), infobars_.end(), [](InfoBar* infobar) {
return infobar->delegate()->ShouldHideInFullscreen();
});
;
}
bool InfoBarManager::ShouldShowInfoBar(const InfoBar* infobar) const {
DCHECK(infobar);
if (infobars_enabled_) {
return true;
}
// Only buttonless infobars should be disabled. The ones with buttons are
// semantically message boxes and must be shown because certain functionality
// depends on them, see crbug.com/333945848 and crbug.com/341947684.
const auto* const delegate = infobar->delegate()->AsConfirmInfoBarDelegate();
return delegate &&
delegate->GetButtons() != ConfirmInfoBarDelegate::BUTTON_NONE;
}
} // namespace infobars
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