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// Copyright (c) 2011 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 "build/build_config.h"
// TODO(pkasting): Port Mac to use this.
#if defined(TOOLKIT_VIEWS) || defined(TOOLKIT_GTK)
#include "chrome/browser/infobars/infobar_container.h"
#include <algorithm>
#include "chrome/browser/infobars/infobar.h"
#include "chrome/browser/infobars/infobar_delegate.h"
#include "chrome/browser/infobars/infobar_tab_helper.h"
#include "chrome/common/chrome_notification_types.h"
#include "content/common/notification_details.h"
#include "content/common/notification_source.h"
#include "ui/base/animation/slide_animation.h"
InfoBarContainer::Delegate::~Delegate() {
}
InfoBarContainer::InfoBarContainer(Delegate* delegate)
: delegate_(delegate),
tab_helper_(NULL),
top_arrow_target_height_(InfoBar::kDefaultArrowTargetHeight) {
}
InfoBarContainer::~InfoBarContainer() {
// RemoveAllInfoBarsForDestruction() should have already cleared our infobars.
DCHECK(infobars_.empty());
}
void InfoBarContainer::ChangeTabContents(InfoBarTabHelper* tab_helper) {
registrar_.RemoveAll();
while (!infobars_.empty()) {
InfoBar* infobar = infobars_.front();
// Inform the infobar that it's hidden. If it was already closing, this
// closes its delegate.
infobar->Hide(false);
}
tab_helper_ = tab_helper;
if (tab_helper_) {
Source<InfoBarTabHelper> th_source(tab_helper_);
registrar_.Add(this, chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_ADDED,
th_source);
registrar_.Add(this, chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_REMOVED,
th_source);
registrar_.Add(this, chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_REPLACED,
th_source);
for (size_t i = 0; i < tab_helper_->infobar_count(); ++i) {
// As when we removed the infobars above, we prevent callbacks to
// OnInfoBarAnimated() for each infobar.
AddInfoBar(
tab_helper_->GetInfoBarDelegateAt(i)->CreateInfoBar(tab_helper_),
i, false, NO_CALLBACK);
}
}
// Now that everything is up to date, signal the delegate to re-layout.
OnInfoBarStateChanged(false);
}
int InfoBarContainer::GetVerticalOverlap(int* total_height) {
// Our |total_height| is the sum of the preferred heights of the InfoBars
// contained within us plus the |vertical_overlap|.
int vertical_overlap = 0;
int next_infobar_y = 0;
for (InfoBars::iterator i(infobars_.begin()); i != infobars_.end(); ++i) {
InfoBar* infobar = *i;
next_infobar_y -= infobar->arrow_height();
vertical_overlap = std::max(vertical_overlap, -next_infobar_y);
next_infobar_y += infobar->total_height();
}
if (total_height)
*total_height = next_infobar_y + vertical_overlap;
return vertical_overlap;
}
void InfoBarContainer::SetMaxTopArrowHeight(int height) {
// Decrease the height by the arrow stroke thickness, which is the separator
// line height, because the infobar arrow target heights are without-stroke.
top_arrow_target_height_ = std::min(
std::max(height - InfoBar::kSeparatorLineHeight, 0),
InfoBar::kMaximumArrowTargetHeight);
UpdateInfoBarArrowTargetHeights();
}
void InfoBarContainer::OnInfoBarStateChanged(bool is_animating) {
if (delegate_)
delegate_->InfoBarContainerStateChanged(is_animating);
UpdateInfoBarArrowTargetHeights();
PlatformSpecificInfoBarStateChanged(is_animating);
}
void InfoBarContainer::RemoveInfoBar(InfoBar* infobar) {
infobar->set_container(NULL);
InfoBars::iterator i(std::find(infobars_.begin(), infobars_.end(), infobar));
DCHECK(i != infobars_.end());
PlatformSpecificRemoveInfoBar(infobar);
infobars_.erase(i);
}
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_ = NULL;
// TODO(pkasting): Remove this once TabContentsWrapper calls CloseSoon().
for (size_t i = infobars_.size(); i > 0; --i)
infobars_[i - 1]->CloseSoon();
ChangeTabContents(NULL);
}
void InfoBarContainer::Observe(int type,
const NotificationSource& source,
const NotificationDetails& details) {
switch (type) {
case chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_ADDED:
AddInfoBar(
Details<InfoBarAddedDetails>(details)->CreateInfoBar(tab_helper_),
infobars_.size(), true, WANT_CALLBACK);
break;
case chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_REMOVED: {
InfoBarRemovedDetails* removed_details =
Details<InfoBarRemovedDetails>(details).ptr();
HideInfoBar(removed_details->first, removed_details->second);
break;
}
case chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_REPLACED: {
InfoBarReplacedDetails* replaced_details =
Details<InfoBarReplacedDetails>(details).ptr();
AddInfoBar(replaced_details->second->CreateInfoBar(tab_helper_),
HideInfoBar(replaced_details->first, false), false, WANT_CALLBACK);
break;
}
default:
NOTREACHED();
break;
}
}
size_t InfoBarContainer::HideInfoBar(InfoBarDelegate* delegate,
bool use_animation) {
// Search for the infobar associated with |delegate|. We cannot search for
// |delegate| in |tab_helper_|, because an InfoBar remains alive until its
// close animation completes, while the delegate is removed from the tab
// immediately.
for (InfoBars::iterator i(infobars_.begin()); i != infobars_.end(); ++i) {
InfoBar* infobar = *i;
if (infobar->delegate() == delegate) {
size_t position = i - infobars_.begin();
// We merely need hide the infobar; it will call back to RemoveInfoBar()
// itself once it's hidden.
infobar->Hide(use_animation);
infobar->CloseSoon();
UpdateInfoBarArrowTargetHeights();
return position;
}
}
NOTREACHED();
return infobars_.size();
}
void InfoBarContainer::AddInfoBar(InfoBar* infobar,
size_t position,
bool animate,
CallbackStatus callback_status) {
DCHECK(std::find(infobars_.begin(), infobars_.end(), infobar) ==
infobars_.end());
DCHECK_LE(position, infobars_.size());
infobars_.insert(infobars_.begin() + position, infobar);
UpdateInfoBarArrowTargetHeights();
PlatformSpecificAddInfoBar(infobar, position);
if (callback_status == WANT_CALLBACK)
infobar->set_container(this);
infobar->Show(animate);
if (callback_status == NO_CALLBACK)
infobar->set_container(this);
}
void InfoBarContainer::UpdateInfoBarArrowTargetHeights() {
for (size_t i = 0; i < infobars_.size(); ++i)
infobars_[i]->SetArrowTargetHeight(ArrowTargetHeightForInfoBar(i));
}
int InfoBarContainer::ArrowTargetHeightForInfoBar(size_t infobar_index) const {
if (!delegate_->DrawInfoBarArrows(NULL))
return 0;
if (infobar_index == 0)
return top_arrow_target_height_;
const ui::SlideAnimation& first_infobar_animation =
const_cast<const InfoBar*>(infobars_.front())->animation();
if ((infobar_index > 1) || first_infobar_animation.IsShowing())
return InfoBar::kDefaultArrowTargetHeight;
// When the first infobar is animating closed, we animate the second infobar's
// arrow target height from the default to the top target height. Note that
// the animation values here are going from 1.0 -> 0.0 as the top bar closes.
return top_arrow_target_height_ + static_cast<int>(
(InfoBar::kDefaultArrowTargetHeight - top_arrow_target_height_) *
first_infobar_animation.GetCurrentValue());
}
#endif // TOOLKIT_VIEWS || defined(TOOLKIT_GTK)
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