blob: 5148a2a0608fc0fd6dd459a7ea362700fb9497b8 [file] [log] [blame]
// Copyright (c) 2015 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 "base/command_line.h"
#include "ui/gfx/animation/slide_animation.h"
#include "ui/message_center/message_center_style.h"
#include "ui/message_center/message_center_switches.h"
#include "ui/message_center/views/message_center_view.h"
#include "ui/message_center/views/message_list_view.h"
#include "ui/message_center/views/message_view.h"
#include "ui/views/animation/bounds_animator.h"
#include "ui/views/background.h"
#include "ui/views/border.h"
#include "ui/views/layout/box_layout.h"
#include "ui/views/widget/widget.h"
namespace message_center {
namespace {
const int kAnimateClearingNextNotificationDelayMS = 40;
} // namespace
MessageListView::MessageListView(MessageCenterView* message_center_view,
bool top_down)
: message_center_view_(message_center_view),
reposition_top_(-1),
fixed_height_(0),
has_deferred_task_(false),
clear_all_started_(false),
top_down_(top_down),
weak_ptr_factory_(this) {
views::BoxLayout* layout =
new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 1);
layout->SetDefaultFlex(1);
SetLayoutManager(layout);
// Set the margin to 0 for the layout. BoxLayout assumes the same margin
// for top and bottom, but the bottom margin here should be smaller
// because of the shadow of message view. Use an empty border instead
// to provide this margin.
gfx::Insets shadow_insets = MessageView::GetShadowInsets();
set_background(
views::Background::CreateSolidBackground(kMessageCenterBackgroundColor));
SetBorder(views::Border::CreateEmptyBorder(
top_down ? 0 : kMarginBetweenItems - shadow_insets.top(), /* top */
kMarginBetweenItems - shadow_insets.left(), /* left */
top_down ? kMarginBetweenItems - shadow_insets.bottom() : 0, /* bottom */
kMarginBetweenItems - shadow_insets.right() /* right */));
}
MessageListView::~MessageListView() {
if (animator_.get())
animator_->RemoveObserver(this);
}
void MessageListView::Layout() {
if (animator_.get())
return;
gfx::Rect child_area = GetContentsBounds();
int top = child_area.y();
int between_items =
kMarginBetweenItems - MessageView::GetShadowInsets().bottom();
for (int i = 0; i < child_count(); ++i) {
views::View* child = child_at(i);
if (!child->visible())
continue;
int height = child->GetHeightForWidth(child_area.width());
child->SetBounds(child_area.x(), top, child_area.width(), height);
top += height + between_items;
}
}
void MessageListView::AddNotificationAt(MessageView* view, int index) {
// |index| refers to a position in a subset of valid children. |real_index|
// in a list includes the invalid children, so we compute the real index by
// walking the list until |index| number of valid children are encountered,
// or to the end of the list.
int real_index = 0;
while (real_index < child_count()) {
if (IsValidChild(child_at(real_index))) {
--index;
if (index < 0)
break;
}
++real_index;
}
AddChildViewAt(view, real_index);
if (GetContentsBounds().IsEmpty())
return;
adding_views_.insert(view);
DoUpdateIfPossible();
}
void MessageListView::RemoveNotification(MessageView* view) {
DCHECK_EQ(view->parent(), this);
if (GetContentsBounds().IsEmpty()) {
delete view;
} else {
if (view->layer()) {
deleting_views_.insert(view);
} else {
if (animator_.get())
animator_->StopAnimatingView(view);
delete view;
}
DoUpdateIfPossible();
}
}
void MessageListView::UpdateNotification(MessageView* view,
const Notification& notification) {
int index = GetIndexOf(view);
DCHECK_LE(0, index); // GetIndexOf is negative if not a child.
if (animator_.get())
animator_->StopAnimatingView(view);
if (deleting_views_.find(view) != deleting_views_.end())
deleting_views_.erase(view);
if (deleted_when_done_.find(view) != deleted_when_done_.end())
deleted_when_done_.erase(view);
view->UpdateWithNotification(notification);
DoUpdateIfPossible();
}
gfx::Size MessageListView::GetPreferredSize() const {
int width = 0;
for (int i = 0; i < child_count(); i++) {
const views::View* child = child_at(i);
if (IsValidChild(child))
width = std::max(width, child->GetPreferredSize().width());
}
return gfx::Size(width + GetInsets().width(),
GetHeightForWidth(width + GetInsets().width()));
}
int MessageListView::GetHeightForWidth(int width) const {
if (fixed_height_ > 0)
return fixed_height_;
width -= GetInsets().width();
int height = 0;
int padding = 0;
for (int i = 0; i < child_count(); ++i) {
const views::View* child = child_at(i);
if (!IsValidChild(child))
continue;
height += child->GetHeightForWidth(width) + padding;
padding = kMarginBetweenItems - MessageView::GetShadowInsets().bottom();
}
return height + GetInsets().height();
}
void MessageListView::PaintChildren(const ui::PaintContext& context) {
// Paint in the inversed order. Otherwise upper notification may be
// hidden by the lower one.
for (int i = child_count() - 1; i >= 0; --i) {
if (!child_at(i)->layer())
child_at(i)->Paint(context);
}
}
void MessageListView::ReorderChildLayers(ui::Layer* parent_layer) {
// Reorder children to stack the last child layer at the top. Otherwise
// upper notification may be hidden by the lower one.
for (int i = 0; i < child_count(); ++i) {
if (child_at(i)->layer())
parent_layer->StackAtBottom(child_at(i)->layer());
}
}
void MessageListView::SetRepositionTarget(const gfx::Rect& target) {
reposition_top_ = target.y();
fixed_height_ = GetHeightForWidth(width());
}
void MessageListView::ResetRepositionSession() {
// Don't call DoUpdateIfPossible(), but let Layout() do the task without
// animation. Reset will cause the change of the bubble size itself, and
// animation from the old location will look weird.
if (reposition_top_ >= 0 && animator_.get()) {
has_deferred_task_ = false;
// cancel cause OnBoundsAnimatorDone which deletes |deleted_when_done_|.
animator_->Cancel();
STLDeleteContainerPointers(deleting_views_.begin(), deleting_views_.end());
deleting_views_.clear();
adding_views_.clear();
animator_.reset();
}
reposition_top_ = -1;
fixed_height_ = 0;
}
void MessageListView::ClearAllNotifications(
const gfx::Rect& visible_scroll_rect) {
for (int i = 0; i < child_count(); ++i) {
views::View* child = child_at(i);
if (!child->visible())
continue;
if (gfx::IntersectRects(child->bounds(), visible_scroll_rect).IsEmpty())
continue;
clearing_all_views_.push_back(child);
}
DoUpdateIfPossible();
}
void MessageListView::OnBoundsAnimatorProgressed(
views::BoundsAnimator* animator) {
DCHECK_EQ(animator_.get(), animator);
for (std::set<views::View*>::iterator iter = deleted_when_done_.begin();
iter != deleted_when_done_.end(); ++iter) {
const gfx::SlideAnimation* animation = animator->GetAnimationForView(*iter);
if (animation)
(*iter)->layer()->SetOpacity(animation->CurrentValueBetween(1.0, 0.0));
}
}
void MessageListView::OnBoundsAnimatorDone(views::BoundsAnimator* animator) {
STLDeleteContainerPointers(deleted_when_done_.begin(),
deleted_when_done_.end());
deleted_when_done_.clear();
if (clear_all_started_) {
clear_all_started_ = false;
message_center_view()->OnAllNotificationsCleared();
}
if (has_deferred_task_) {
has_deferred_task_ = false;
DoUpdateIfPossible();
}
if (GetWidget())
GetWidget()->SynthesizeMouseMoveEvent();
}
bool MessageListView::IsValidChild(const views::View* child) const {
return child->visible() &&
deleting_views_.find(const_cast<views::View*>(child)) ==
deleting_views_.end() &&
deleted_when_done_.find(const_cast<views::View*>(child)) ==
deleted_when_done_.end();
}
void MessageListView::DoUpdateIfPossible() {
gfx::Rect child_area = GetContentsBounds();
if (child_area.IsEmpty())
return;
if (animator_.get() && animator_->IsAnimating()) {
has_deferred_task_ = true;
return;
}
if (!animator_.get()) {
animator_.reset(new views::BoundsAnimator(this));
animator_->AddObserver(this);
}
if (!clearing_all_views_.empty()) {
AnimateClearingOneNotification();
return;
}
if (top_down_ ||
base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableMessageCenterAlwaysScrollUpUponNotificationRemoval))
AnimateNotificationsBelowTarget();
else
AnimateNotificationsAboveTarget();
adding_views_.clear();
deleting_views_.clear();
}
void MessageListView::AnimateNotificationsBelowTarget() {
int last_index = -1;
for (int i = 0; i < child_count(); ++i) {
views::View* child = child_at(i);
if (!IsValidChild(child)) {
AnimateChild(child, child->y(), child->height());
} else if (reposition_top_ < 0 || child->y() > reposition_top_) {
// Find first notification below target (or all notifications if no
// target).
last_index = i;
break;
}
}
if (last_index > 0) {
int between_items =
kMarginBetweenItems - MessageView::GetShadowInsets().bottom();
int top = (reposition_top_ > 0) ? reposition_top_ : GetInsets().top();
for (int i = last_index; i < child_count(); ++i) {
// Animate notifications below target upwards.
views::View* child = child_at(i);
if (AnimateChild(child, top, child->height()))
top += child->height() + between_items;
}
}
}
void MessageListView::AnimateNotificationsAboveTarget() {
int last_index = -1;
for (int i = child_count() - 1; i >= 0; --i) {
views::View* child = child_at(i);
if (!IsValidChild(child)) {
AnimateChild(child, child->y(), child->height());
} else if (reposition_top_ < 0 || child->y() < reposition_top_) {
// Find first notification above target (or all notifications if no
// target).
last_index = i;
break;
}
}
if (last_index >= 0) {
int between_items =
kMarginBetweenItems - MessageView::GetShadowInsets().bottom();
int bottom = (reposition_top_ > 0)
? reposition_top_ + child_at(last_index)->height()
: GetHeightForWidth(width()) - GetInsets().bottom();
for (int i = last_index; i >= 0; --i) {
// Animate notifications above target downwards.
views::View* child = child_at(i);
if (AnimateChild(child, bottom - child->height(), child->height()))
bottom -= child->height() + between_items;
}
}
}
bool MessageListView::AnimateChild(views::View* child, int top, int height) {
gfx::Rect child_area = GetContentsBounds();
if (adding_views_.find(child) != adding_views_.end()) {
child->SetBounds(child_area.right(), top, child_area.width(), height);
animator_->AnimateViewTo(
child, gfx::Rect(child_area.x(), top, child_area.width(), height));
} else if (deleting_views_.find(child) != deleting_views_.end()) {
DCHECK(child->layer());
// No moves, but animate to fade-out.
animator_->AnimateViewTo(child, child->bounds());
deleted_when_done_.insert(child);
return false;
} else {
gfx::Rect target(child_area.x(), top, child_area.width(), height);
if (child->bounds().origin() != target.origin())
animator_->AnimateViewTo(child, target);
else
child->SetBoundsRect(target);
}
return true;
}
void MessageListView::AnimateClearingOneNotification() {
DCHECK(!clearing_all_views_.empty());
clear_all_started_ = true;
views::View* child = clearing_all_views_.front();
clearing_all_views_.pop_front();
// Slide from left to right.
gfx::Rect new_bounds = child->bounds();
new_bounds.set_x(new_bounds.right() + kMarginBetweenItems);
animator_->AnimateViewTo(child, new_bounds);
// Schedule to start sliding out next notification after a short delay.
if (!clearing_all_views_.empty()) {
base::MessageLoop::current()->PostDelayedTask(
FROM_HERE, base::Bind(&MessageListView::AnimateClearingOneNotification,
weak_ptr_factory_.GetWeakPtr()),
base::TimeDelta::FromMilliseconds(
kAnimateClearingNextNotificationDelayMS));
}
}
} // namespace message_center