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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_container.h"
#include <algorithm>
#include "base/auto_reset.h"
#include "base/check_op.h"
#include "base/containers/contains.h"
#include "base/metrics/histogram_base.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/metrics_hashes.h"
#include "build/build_config.h"
#include "components/infobars/core/infobar.h"
#include "components/infobars/core/infobar_delegate.h"
namespace infobars {
InfoBarContainer::Delegate::~Delegate() = default;
InfoBarContainer::InfoBarContainer(Delegate* delegate)
: delegate_(delegate),
infobar_manager_(nullptr),
ignore_infobar_state_changed_(false) {}
InfoBarContainer::~InfoBarContainer() {
// RemoveAllInfoBarsForDestruction() should have already cleared our infobars.
DCHECK(infobars_.empty());
if (infobar_manager_) {
infobar_manager_->RemoveObserver(this);
}
}
void InfoBarContainer::ChangeInfoBarManager(InfoBarManager* infobar_manager) {
if (infobar_manager_) {
infobar_manager_->RemoveObserver(this);
}
bool state_changed = false;
{
// Ignore intermediate state changes. We'll manually trigger processing
// once we're finished.
base::AutoReset<bool> ignore_changes(&ignore_infobar_state_changed_, true);
// Hides all infobars in this container without animation.
while (!infobars_.empty()) {
InfoBar* infobar = infobars_.front();
// Inform the infobar that it's hidden. If it was already closing, this
// deletes it. Otherwise, this ensures the infobar will be deleted if
// it's closed while it's not in an InfoBarContainer.
infobar->Hide(false);
state_changed = true;
}
infobar_manager_ = infobar_manager;
if (infobar_manager_) {
infobar_manager_->AddObserver(this);
for (size_t i = 0; i < infobar_manager_->infobars().size(); ++i) {
AddInfoBar(infobar_manager_->infobars()[i], i, false);
state_changed = true;
}
}
}
// Now that everything is up to date, signal the delegate to re-layout.
if (state_changed) {
OnInfoBarStateChanged(false);
}
}
void InfoBarContainer::OnInfoBarStateChanged(bool is_animating) {
if (ignore_infobar_state_changed_) {
return;
}
if (delegate_) {
delegate_->InfoBarContainerStateChanged(is_animating);
}
PlatformSpecificInfoBarStateChanged(is_animating);
}
void InfoBarContainer::RemoveInfoBar(InfoBar* infobar) {
infobar->set_container(nullptr);
auto i = std::ranges::find(infobars_, infobar);
CHECK(i != infobars_.end());
PlatformSpecificRemoveInfoBar(infobar);
infobars_.erase(i);
}
bool InfoBarContainer::ShouldHideInFullscreen() const {
return infobar_manager_->ShouldHideInFullscreen();
}
void InfoBarContainer::RemoveAllInfoBarsForDestruction() {
// Before we remove any children, we reset |delegate_|, so that no removals
// will result in us trying to call
// delegate_->InfoBarContainerStateChanged(). This is important because at
// this point |delegate_| may be shutting down, and it's at best unimportant
// and at worst disastrous to call that.
delegate_ = nullptr;
ChangeInfoBarManager(nullptr);
}
void InfoBarContainer::OnInfoBarAdded(InfoBar* infobar) {
AddInfoBar(infobar, infobars_.size(), true);
}
void InfoBarContainer::OnInfoBarRemoved(InfoBar* infobar, bool animate) {
DCHECK(infobar_manager_);
infobar->Hide(infobar_manager_->animations_enabled() && animate);
}
void InfoBarContainer::OnInfoBarReplaced(InfoBar* old_infobar,
InfoBar* new_infobar) {
PlatformSpecificReplaceInfoBar(old_infobar, new_infobar);
InfoBars::const_iterator i = std::ranges::find(infobars_, old_infobar);
CHECK(i != infobars_.end());
size_t position = i - infobars_.begin();
old_infobar->Hide(false);
AddInfoBar(new_infobar, position, false);
}
void InfoBarContainer::OnManagerShuttingDown(InfoBarManager* manager) {
DCHECK_EQ(infobar_manager_, manager);
infobar_manager_->RemoveObserver(this);
infobar_manager_ = nullptr;
}
void InfoBarContainer::AddInfoBar(InfoBar* infobar,
size_t position,
bool animate) {
DCHECK(!base::Contains(infobars_, infobar));
DCHECK_LE(position, infobars_.size());
infobars_.insert(infobars_.begin() + position, infobar);
PlatformSpecificAddInfoBar(infobar, position);
infobar->set_container(this);
DCHECK(infobar_manager_);
infobar->Show(infobar_manager_->animations_enabled() && animate);
// Record the infobar being displayed.
DCHECK_NE(InfoBarDelegate::INVALID, infobar->GetIdentifier());
base::UmaHistogramSparse("InfoBar.Shown", infobar->GetIdentifier());
}
} // namespace infobars
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