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chromium / chromium / chromium / 490ae04d1c3728611a241754f5477114537d9670 / . / ash / shelf / shelf_view.cc
blob: cc0e1ae2836b73231bfd9e9bfa8663fd878f1089 [file] [log] [blame]
// Copyright (c) 2012 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 "ash/shelf/shelf_view.h"
#include <algorithm>
#include "ash/ash_constants.h"
#include "ash/ash_switches.h"
#include "ash/drag_drop/drag_image_view.h"
#include "ash/metrics/user_metrics_recorder.h"
#include "ash/root_window_controller.h"
#include "ash/scoped_target_root_window.h"
#include "ash/shelf/app_list_button.h"
#include "ash/shelf/overflow_bubble.h"
#include "ash/shelf/overflow_bubble_view.h"
#include "ash/shelf/overflow_button.h"
#include "ash/shelf/shelf_button.h"
#include "ash/shelf/shelf_constants.h"
#include "ash/shelf/shelf_delegate.h"
#include "ash/shelf/shelf_icon_observer.h"
#include "ash/shelf/shelf_item_delegate.h"
#include "ash/shelf/shelf_item_delegate_manager.h"
#include "ash/shelf/shelf_layout_manager.h"
#include "ash/shelf/shelf_menu_model.h"
#include "ash/shelf/shelf_model.h"
#include "ash/shelf/shelf_tooltip_manager.h"
#include "ash/shelf/shelf_widget.h"
#include "ash/shell.h"
#include "ash/wm/coordinate_conversion.h"
#include "base/auto_reset.h"
#include "base/memory/scoped_ptr.h"
#include "base/metrics/histogram.h"
#include "grit/ash_resources.h"
#include "grit/ash_strings.h"
#include "ui/accessibility/ax_view_state.h"
#include "ui/aura/client/screen_position_client.h"
#include "ui/aura/window.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/models/simple_menu_model.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/compositor/layer.h"
#include "ui/compositor/layer_animator.h"
#include "ui/compositor/scoped_animation_duration_scale_mode.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/point.h"
#include "ui/views/animation/bounds_animator.h"
#include "ui/views/border.h"
#include "ui/views/controls/button/image_button.h"
#include "ui/views/controls/menu/menu_model_adapter.h"
#include "ui/views/controls/menu/menu_runner.h"
#include "ui/views/focus/focus_search.h"
#include "ui/views/view_model.h"
#include "ui/views/view_model_utils.h"
#include "ui/views/widget/widget.h"
using gfx::Animation;
using views::View;
namespace ash {
const int SHELF_ALIGNMENT_UMA_ENUM_VALUE_BOTTOM = 0;
const int SHELF_ALIGNMENT_UMA_ENUM_VALUE_LEFT = 1;
const int SHELF_ALIGNMENT_UMA_ENUM_VALUE_RIGHT = 2;
const int SHELF_ALIGNMENT_UMA_ENUM_VALUE_COUNT = 3;
// Default amount content is inset on the left edge.
const int kDefaultLeadingInset = 8;
// Minimum distance before drag starts.
const int kMinimumDragDistance = 8;
// Additional spacing for the left and right side of icons.
const int kHorizontalIconSpacing = 2;
// Inset for items which do not have an icon.
const int kHorizontalNoIconInsetSpacing =
kHorizontalIconSpacing + kDefaultLeadingInset;
// The proportion of the shelf space reserved for non-panel icons. Panels
// may flow into this space but will be put into the overflow bubble if there
// is contention for the space.
const float kReservedNonPanelIconProportion = 0.67f;
// This is the command id of the menu item which contains the name of the menu.
const int kCommandIdOfMenuName = 0;
// The background color of the active item in the list.
const SkColor kActiveListItemBackgroundColor = SkColorSetRGB(203 , 219, 241);
// The background color of the active & hovered item in the list.
const SkColor kFocusedActiveListItemBackgroundColor =
SkColorSetRGB(193, 211, 236);
// The text color of the caption item in a list.
const SkColor kCaptionItemForegroundColor = SK_ColorBLACK;
// The maximum allowable length of a menu line of an application menu in pixels.
const int kMaximumAppMenuItemLength = 350;
// The distance of the cursor from the outer rim of the shelf before it
// separates.
const int kRipOffDistance = 48;
// The rip off drag and drop proxy image should get scaled by this factor.
const float kDragAndDropProxyScale = 1.5f;
// The opacity represents that this partially disappeared item will get removed.
const float kDraggedImageOpacity = 0.5f;
namespace {
// A class to temporarily disable a given bounds animator.
class BoundsAnimatorDisabler {
public:
BoundsAnimatorDisabler(views::BoundsAnimator* bounds_animator)
: old_duration_(bounds_animator->GetAnimationDuration()),
bounds_animator_(bounds_animator) {
bounds_animator_->SetAnimationDuration(1);
}
~BoundsAnimatorDisabler() {
bounds_animator_->SetAnimationDuration(old_duration_);
}
private:
// The previous animation duration.
int old_duration_;
// The bounds animator which gets used.
views::BoundsAnimator* bounds_animator_;
DISALLOW_COPY_AND_ASSIGN(BoundsAnimatorDisabler);
};
// The MenuModelAdapter gets slightly changed to adapt the menu appearance to
// our requirements.
class ShelfMenuModelAdapter : public views::MenuModelAdapter {
public:
explicit ShelfMenuModelAdapter(ShelfMenuModel* menu_model);
// views::MenuModelAdapter:
virtual const gfx::FontList* GetLabelFontList(int command_id) const OVERRIDE;
virtual bool IsCommandEnabled(int id) const OVERRIDE;
virtual void GetHorizontalIconMargins(int id,
int icon_size,
int* left_margin,
int* right_margin) const OVERRIDE;
virtual bool GetForegroundColor(int command_id,
bool is_hovered,
SkColor* override_color) const OVERRIDE;
virtual bool GetBackgroundColor(int command_id,
bool is_hovered,
SkColor* override_color) const OVERRIDE;
virtual int GetMaxWidthForMenu(views::MenuItemView* menu) OVERRIDE;
virtual bool ShouldReserveSpaceForSubmenuIndicator() const OVERRIDE;
private:
ShelfMenuModel* menu_model_;
DISALLOW_COPY_AND_ASSIGN(ShelfMenuModelAdapter);
};
ShelfMenuModelAdapter::ShelfMenuModelAdapter(ShelfMenuModel* menu_model)
: MenuModelAdapter(menu_model),
menu_model_(menu_model) {
}
const gfx::FontList* ShelfMenuModelAdapter::GetLabelFontList(
int command_id) const {
if (command_id != kCommandIdOfMenuName)
return MenuModelAdapter::GetLabelFontList(command_id);
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
return &rb.GetFontList(ui::ResourceBundle::BoldFont);
}
bool ShelfMenuModelAdapter::IsCommandEnabled(int id) const {
return id != kCommandIdOfMenuName;
}
bool ShelfMenuModelAdapter::GetForegroundColor(int command_id,
bool is_hovered,
SkColor* override_color) const {
if (command_id != kCommandIdOfMenuName)
return false;
*override_color = kCaptionItemForegroundColor;
return true;
}
bool ShelfMenuModelAdapter::GetBackgroundColor(int command_id,
bool is_hovered,
SkColor* override_color) const {
if (!menu_model_->IsCommandActive(command_id))
return false;
*override_color = is_hovered ? kFocusedActiveListItemBackgroundColor :
kActiveListItemBackgroundColor;
return true;
}
void ShelfMenuModelAdapter::GetHorizontalIconMargins(int command_id,
int icon_size,
int* left_margin,
int* right_margin) const {
*left_margin = kHorizontalIconSpacing;
*right_margin = (command_id != kCommandIdOfMenuName) ?
kHorizontalIconSpacing : -(icon_size + kHorizontalNoIconInsetSpacing);
}
int ShelfMenuModelAdapter::GetMaxWidthForMenu(views::MenuItemView* menu) {
return kMaximumAppMenuItemLength;
}
bool ShelfMenuModelAdapter::ShouldReserveSpaceForSubmenuIndicator() const {
return false;
}
// Custom FocusSearch used to navigate the shelf in the order items are in
// the ViewModel.
class ShelfFocusSearch : public views::FocusSearch {
public:
explicit ShelfFocusSearch(views::ViewModel* view_model)
: FocusSearch(NULL, true, true),
view_model_(view_model) {}
virtual ~ShelfFocusSearch() {}
// views::FocusSearch overrides:
virtual View* FindNextFocusableView(
View* starting_view,
bool reverse,
Direction direction,
bool check_starting_view,
views::FocusTraversable** focus_traversable,
View** focus_traversable_view) OVERRIDE {
int index = view_model_->GetIndexOfView(starting_view);
if (index == -1)
return view_model_->view_at(0);
if (reverse) {
--index;
if (index < 0)
index = view_model_->view_size() - 1;
} else {
++index;
if (index >= view_model_->view_size())
index = 0;
}
return view_model_->view_at(index);
}
private:
views::ViewModel* view_model_;
DISALLOW_COPY_AND_ASSIGN(ShelfFocusSearch);
};
// AnimationDelegate used when inserting a new item. This steadily increases the
// opacity of the layer as the animation progress.
class FadeInAnimationDelegate : public gfx::AnimationDelegate {
public:
explicit FadeInAnimationDelegate(views::View* view) : view_(view) {}
virtual ~FadeInAnimationDelegate() {}
// AnimationDelegate overrides:
virtual void AnimationProgressed(const Animation* animation) OVERRIDE {
view_->layer()->SetOpacity(animation->GetCurrentValue());
view_->layer()->ScheduleDraw();
}
virtual void AnimationEnded(const Animation* animation) OVERRIDE {
view_->layer()->SetOpacity(1.0f);
view_->layer()->ScheduleDraw();
}
virtual void AnimationCanceled(const Animation* animation) OVERRIDE {
view_->layer()->SetOpacity(1.0f);
view_->layer()->ScheduleDraw();
}
private:
views::View* view_;
DISALLOW_COPY_AND_ASSIGN(FadeInAnimationDelegate);
};
void ReflectItemStatus(const ShelfItem& item, ShelfButton* button) {
switch (item.status) {
case STATUS_CLOSED:
button->ClearState(ShelfButton::STATE_ACTIVE);
button->ClearState(ShelfButton::STATE_RUNNING);
button->ClearState(ShelfButton::STATE_ATTENTION);
break;
case STATUS_RUNNING:
button->ClearState(ShelfButton::STATE_ACTIVE);
button->AddState(ShelfButton::STATE_RUNNING);
button->ClearState(ShelfButton::STATE_ATTENTION);
break;
case STATUS_ACTIVE:
button->AddState(ShelfButton::STATE_ACTIVE);
button->ClearState(ShelfButton::STATE_RUNNING);
button->ClearState(ShelfButton::STATE_ATTENTION);
break;
case STATUS_ATTENTION:
button->ClearState(ShelfButton::STATE_ACTIVE);
button->ClearState(ShelfButton::STATE_RUNNING);
button->AddState(ShelfButton::STATE_ATTENTION);
break;
}
}
} // namespace
// AnimationDelegate used when deleting an item. This steadily decreased the
// opacity of the layer as the animation progress.
class ShelfView::FadeOutAnimationDelegate : public gfx::AnimationDelegate {
public:
FadeOutAnimationDelegate(ShelfView* host, views::View* view)
: shelf_view_(host),
view_(view) {}
virtual ~FadeOutAnimationDelegate() {}
// AnimationDelegate overrides:
virtual void AnimationProgressed(const Animation* animation) OVERRIDE {
view_->layer()->SetOpacity(1 - animation->GetCurrentValue());
view_->layer()->ScheduleDraw();
}
virtual void AnimationEnded(const Animation* animation) OVERRIDE {
shelf_view_->OnFadeOutAnimationEnded();
}
virtual void AnimationCanceled(const Animation* animation) OVERRIDE {
}
private:
ShelfView* shelf_view_;
scoped_ptr<views::View> view_;
DISALLOW_COPY_AND_ASSIGN(FadeOutAnimationDelegate);
};
// AnimationDelegate used to trigger fading an element in. When an item is
// inserted this delegate is attached to the animation that expands the size of
// the item. When done it kicks off another animation to fade the item in.
class ShelfView::StartFadeAnimationDelegate : public gfx::AnimationDelegate {
public:
StartFadeAnimationDelegate(ShelfView* host,
views::View* view)
: shelf_view_(host),
view_(view) {}
virtual ~StartFadeAnimationDelegate() {}
// AnimationDelegate overrides:
virtual void AnimationEnded(const Animation* animation) OVERRIDE {
shelf_view_->FadeIn(view_);
}
virtual void AnimationCanceled(const Animation* animation) OVERRIDE {
view_->layer()->SetOpacity(1.0f);
}
private:
ShelfView* shelf_view_;
views::View* view_;
DISALLOW_COPY_AND_ASSIGN(StartFadeAnimationDelegate);
};
ShelfView::ShelfView(ShelfModel* model,
ShelfDelegate* delegate,
ShelfLayoutManager* manager)
: model_(model),
delegate_(delegate),
view_model_(new views::ViewModel),
first_visible_index_(0),
last_visible_index_(-1),
overflow_button_(NULL),
owner_overflow_bubble_(NULL),
drag_pointer_(NONE),
drag_view_(NULL),
start_drag_index_(-1),
context_menu_id_(0),
leading_inset_(kDefaultLeadingInset),
cancelling_drag_model_changed_(false),
last_hidden_index_(0),
closing_event_time_(base::TimeDelta()),
got_deleted_(NULL),
drag_and_drop_item_pinned_(false),
drag_and_drop_shelf_id_(0),
dragged_off_shelf_(false),
snap_back_from_rip_off_view_(NULL),
item_manager_(Shell::GetInstance()->shelf_item_delegate_manager()),
layout_manager_(manager),
overflow_mode_(false),
main_shelf_(NULL),
dragged_off_from_overflow_to_shelf_(false) {
DCHECK(model_);
bounds_animator_.reset(new views::BoundsAnimator(this));
bounds_animator_->AddObserver(this);
set_context_menu_controller(this);
focus_search_.reset(new ShelfFocusSearch(view_model_.get()));
tooltip_.reset(new ShelfTooltipManager(manager, this));
}
ShelfView::~ShelfView() {
bounds_animator_->RemoveObserver(this);
model_->RemoveObserver(this);
// If we are inside the MenuRunner, we need to know if we were getting
// deleted while it was running.
if (got_deleted_)
*got_deleted_ = true;
}
void ShelfView::Init() {
model_->AddObserver(this);
const ShelfItems& items(model_->items());
for (ShelfItems::const_iterator i = items.begin(); i != items.end(); ++i) {
views::View* child = CreateViewForItem(*i);
child->SetPaintToLayer(true);
view_model_->Add(child, static_cast<int>(i - items.begin()));
AddChildView(child);
}
overflow_button_ = new OverflowButton(this);
overflow_button_->set_context_menu_controller(this);
ConfigureChildView(overflow_button_);
AddChildView(overflow_button_);
// We'll layout when our bounds change.
}
void ShelfView::OnShelfAlignmentChanged() {
overflow_button_->OnShelfAlignmentChanged();
LayoutToIdealBounds();
for (int i=0; i < view_model_->view_size(); ++i) {
if (i >= first_visible_index_ && i <= last_visible_index_)
view_model_->view_at(i)->Layout();
}
tooltip_->Close();
if (overflow_bubble_)
overflow_bubble_->Hide();
}
void ShelfView::SchedulePaintForAllButtons() {
for (int i = 0; i < view_model_->view_size(); ++i) {
if (i >= first_visible_index_ && i <= last_visible_index_)
view_model_->view_at(i)->SchedulePaint();
}
if (overflow_button_ && overflow_button_->visible())
overflow_button_->SchedulePaint();
}
gfx::Rect ShelfView::GetIdealBoundsOfItemIcon(ShelfID id) {
int index = model_->ItemIndexByID(id);
if (index == -1)
return gfx::Rect();
// Map all items from overflow area to the overflow button. Note that the
// section between last_index_hidden_ and model_->FirstPanelIndex() is the
// list of invisible panel items. However, these items are currently nowhere
// represented and get dropped instead - see (crbug.com/378907). As such there
// is no way to address them or place them. We therefore move them over the
// overflow button.
if (index > last_visible_index_ && index < model_->FirstPanelIndex())
index = last_visible_index_ + 1;
const gfx::Rect& ideal_bounds(view_model_->ideal_bounds(index));
DCHECK_NE(TYPE_APP_LIST, model_->items()[index].type);
ShelfButton* button = static_cast<ShelfButton*>(view_model_->view_at(index));
gfx::Rect icon_bounds = button->GetIconBounds();
return gfx::Rect(GetMirroredXWithWidthInView(
ideal_bounds.x() + icon_bounds.x(), icon_bounds.width()),
ideal_bounds.y() + icon_bounds.y(),
icon_bounds.width(),
icon_bounds.height());
}
void ShelfView::UpdatePanelIconPosition(ShelfID id,
const gfx::Point& midpoint) {
int current_index = model_->ItemIndexByID(id);
int first_panel_index = model_->FirstPanelIndex();
if (current_index < first_panel_index)
return;
gfx::Point midpoint_in_view(GetMirroredXInView(midpoint.x()),
midpoint.y());
int target_index = current_index;
while (target_index > first_panel_index &&
layout_manager_->PrimaryAxisValue(
view_model_->ideal_bounds(target_index).x(),
view_model_->ideal_bounds(target_index).y()) >
layout_manager_->PrimaryAxisValue(midpoint_in_view.x(),
midpoint_in_view.y())) {
--target_index;
}
while (target_index < view_model_->view_size() - 1 &&
layout_manager_->PrimaryAxisValue(
view_model_->ideal_bounds(target_index).right(),
view_model_->ideal_bounds(target_index).bottom()) <
layout_manager_->PrimaryAxisValue(midpoint_in_view.x(),
midpoint_in_view.y())) {
++target_index;
}
if (current_index != target_index)
model_->Move(current_index, target_index);
}
bool ShelfView::IsShowingMenu() const {
return (launcher_menu_runner_.get() &&
launcher_menu_runner_->IsRunning());
}
bool ShelfView::IsShowingOverflowBubble() const {
return overflow_bubble_.get() && overflow_bubble_->IsShowing();
}
views::View* ShelfView::GetAppListButtonView() const {
for (int i = 0; i < model_->item_count(); ++i) {
if (model_->items()[i].type == TYPE_APP_LIST)
return view_model_->view_at(i);
}
NOTREACHED() << "Applist button not found";
return NULL;
}
////////////////////////////////////////////////////////////////////////////////
// ShelfView, FocusTraversable implementation:
views::FocusSearch* ShelfView::GetFocusSearch() {
return focus_search_.get();
}
views::FocusTraversable* ShelfView::GetFocusTraversableParent() {
return parent()->GetFocusTraversable();
}
View* ShelfView::GetFocusTraversableParentView() {
return this;
}
void ShelfView::CreateDragIconProxy(
const gfx::Point& location_in_screen_coordinates,
const gfx::ImageSkia& icon,
views::View* replaced_view,
const gfx::Vector2d& cursor_offset_from_center,
float scale_factor) {
drag_replaced_view_ = replaced_view;
drag_image_.reset(new ash::DragImageView(
drag_replaced_view_->GetWidget()->GetNativeWindow()->GetRootWindow(),
ui::DragDropTypes::DRAG_EVENT_SOURCE_MOUSE));
drag_image_->SetImage(icon);
gfx::Size size = drag_image_->GetPreferredSize();
size.set_width(size.width() * scale_factor);
size.set_height(size.height() * scale_factor);
drag_image_offset_ = gfx::Vector2d(size.width() / 2, size.height() / 2) +
cursor_offset_from_center;
gfx::Rect drag_image_bounds(
location_in_screen_coordinates - drag_image_offset_,
size);
drag_image_->SetBoundsInScreen(drag_image_bounds);
drag_image_->SetWidgetVisible(true);
}
void ShelfView::UpdateDragIconProxy(
const gfx::Point& location_in_screen_coordinates) {
// TODO(jennyz): Investigate why drag_image_ becomes NULL at this point per
// crbug.com/34722, while the app list item is still being dragged around.
if (drag_image_) {
drag_image_->SetScreenPosition(
location_in_screen_coordinates - drag_image_offset_);
}
}
void ShelfView::DestroyDragIconProxy() {
drag_image_.reset();
drag_image_offset_ = gfx::Vector2d(0, 0);
}
bool ShelfView::StartDrag(const std::string& app_id,
const gfx::Point& location_in_screen_coordinates) {
// Bail if an operation is already going on - or the cursor is not inside.
// This could happen if mouse / touch operations overlap.
if (drag_and_drop_shelf_id_ ||
!GetBoundsInScreen().Contains(location_in_screen_coordinates))
return false;
// If the AppsGridView (which was dispatching this event) was opened by our
// button, ShelfView dragging operations are locked and we have to unlock.
CancelDrag(-1);
drag_and_drop_item_pinned_ = false;
drag_and_drop_app_id_ = app_id;
drag_and_drop_shelf_id_ =
delegate_->GetShelfIDForAppID(drag_and_drop_app_id_);
// Check if the application is known and pinned - if not, we have to pin it so
// that we can re-arrange the shelf order accordingly. Note that items have
// to be pinned to give them the same (order) possibilities as a shortcut.
// When an item is dragged from overflow to shelf, IsShowingOverflowBubble()
// returns true. At this time, we don't need to pin the item.
if (!IsShowingOverflowBubble() &&
(!drag_and_drop_shelf_id_ ||
!delegate_->IsAppPinned(app_id))) {
delegate_->PinAppWithID(app_id);
drag_and_drop_shelf_id_ =
delegate_->GetShelfIDForAppID(drag_and_drop_app_id_);
if (!drag_and_drop_shelf_id_)
return false;
drag_and_drop_item_pinned_ = true;
}
views::View* drag_and_drop_view = view_model_->view_at(
model_->ItemIndexByID(drag_and_drop_shelf_id_));
DCHECK(drag_and_drop_view);
// Since there is already an icon presented by the caller, we hide this item
// for now. That has to be done by reducing the size since the visibility will
// change once a regrouping animation is performed.
pre_drag_and_drop_size_ = drag_and_drop_view->size();
drag_and_drop_view->SetSize(gfx::Size());
// First we have to center the mouse cursor over the item.
gfx::Point pt = drag_and_drop_view->GetBoundsInScreen().CenterPoint();
views::View::ConvertPointFromScreen(drag_and_drop_view, &pt);
gfx::Point point_in_root = location_in_screen_coordinates;
ash::wm::ConvertPointFromScreen(
ash::wm::GetRootWindowAt(location_in_screen_coordinates),
&point_in_root);
ui::MouseEvent event(ui::ET_MOUSE_PRESSED, pt, point_in_root, 0, 0);
PointerPressedOnButton(drag_and_drop_view,
ShelfButtonHost::DRAG_AND_DROP,
event);
// Drag the item where it really belongs.
Drag(location_in_screen_coordinates);
return true;
}
bool ShelfView::Drag(const gfx::Point& location_in_screen_coordinates) {
if (!drag_and_drop_shelf_id_ ||
!GetBoundsInScreen().Contains(location_in_screen_coordinates))
return false;
gfx::Point pt = location_in_screen_coordinates;
views::View* drag_and_drop_view = view_model_->view_at(
model_->ItemIndexByID(drag_and_drop_shelf_id_));
ConvertPointFromScreen(drag_and_drop_view, &pt);
gfx::Point point_in_root = location_in_screen_coordinates;
ash::wm::ConvertPointFromScreen(
ash::wm::GetRootWindowAt(location_in_screen_coordinates),
&point_in_root);
ui::MouseEvent event(ui::ET_MOUSE_DRAGGED, pt, point_in_root, 0, 0);
PointerDraggedOnButton(drag_and_drop_view,
ShelfButtonHost::DRAG_AND_DROP,
event);
return true;
}
void ShelfView::EndDrag(bool cancel) {
if (!drag_and_drop_shelf_id_)
return;
views::View* drag_and_drop_view = view_model_->view_at(
model_->ItemIndexByID(drag_and_drop_shelf_id_));
PointerReleasedOnButton(
drag_and_drop_view, ShelfButtonHost::DRAG_AND_DROP, cancel);
// Either destroy the temporarily created item - or - make the item visible.
if (drag_and_drop_item_pinned_ && cancel)
delegate_->UnpinAppWithID(drag_and_drop_app_id_);
else if (drag_and_drop_view) {
if (cancel) {
// When a hosted drag gets canceled, the item can remain in the same slot
// and it might have moved within the bounds. In that case the item need
// to animate back to its correct location.
AnimateToIdealBounds();
} else {
drag_and_drop_view->SetSize(pre_drag_and_drop_size_);
}
}
drag_and_drop_shelf_id_ = 0;
}
void ShelfView::LayoutToIdealBounds() {
if (bounds_animator_->IsAnimating()) {
AnimateToIdealBounds();
return;
}
IdealBounds ideal_bounds;
CalculateIdealBounds(&ideal_bounds);
views::ViewModelUtils::SetViewBoundsToIdealBounds(*view_model_);
overflow_button_->SetBoundsRect(ideal_bounds.overflow_bounds);
}
void ShelfView::UpdateAllButtonsVisibilityInOverflowMode() {
// The overflow button is not shown in overflow mode.
overflow_button_->SetVisible(false);
DCHECK_LT(last_visible_index_, view_model_->view_size());
for (int i = 0; i < view_model_->view_size(); ++i) {
bool visible = i >= first_visible_index_ &&
i <= last_visible_index_;
// To track the dragging of |drag_view_| continuously, its visibility
// should be always true regardless of its position.
if (dragged_off_from_overflow_to_shelf_ &&
view_model_->view_at(i) == drag_view_)
view_model_->view_at(i)->SetVisible(true);
else
view_model_->view_at(i)->SetVisible(visible);
}
}
void ShelfView::CalculateIdealBounds(IdealBounds* bounds) const {
int available_size = layout_manager_->PrimaryAxisValue(width(), height());
DCHECK(model_->item_count() == view_model_->view_size());
if (!available_size)
return;
int first_panel_index = model_->FirstPanelIndex();
int last_button_index = first_panel_index - 1;
int x = 0;
int y = 0;
int button_size = kShelfButtonSize;
int button_spacing = kShelfButtonSpacing;
int w = layout_manager_->PrimaryAxisValue(button_size, width());
int h = layout_manager_->PrimaryAxisValue(height(), button_size);
for (int i = 0; i < view_model_->view_size(); ++i) {
if (i < first_visible_index_) {
view_model_->set_ideal_bounds(i, gfx::Rect(x, y, 0, 0));
continue;
}
view_model_->set_ideal_bounds(i, gfx::Rect(x, y, w, h));
if (i != last_button_index) {
x = layout_manager_->PrimaryAxisValue(x + w + button_spacing, x);
y = layout_manager_->PrimaryAxisValue(y, y + h + button_spacing);
}
}
if (is_overflow_mode()) {
const_cast<ShelfView*>(this)->UpdateAllButtonsVisibilityInOverflowMode();
return;
}
// Right aligned icons.
int end_position = available_size - button_spacing;
x = layout_manager_->PrimaryAxisValue(end_position, 0);
y = layout_manager_->PrimaryAxisValue(0, end_position);
for (int i = view_model_->view_size() - 1;
i >= first_panel_index; --i) {
x = layout_manager_->PrimaryAxisValue(x - w - button_spacing, x);
y = layout_manager_->PrimaryAxisValue(y, y - h - button_spacing);
view_model_->set_ideal_bounds(i, gfx::Rect(x, y, w, h));
end_position = layout_manager_->PrimaryAxisValue(x, y);
}
// Icons on the left / top are guaranteed up to kLeftIconProportion of
// the available space.
int last_icon_position = layout_manager_->PrimaryAxisValue(
view_model_->ideal_bounds(last_button_index).right(),
view_model_->ideal_bounds(last_button_index).bottom()) + button_size;
int reserved_icon_space = available_size * kReservedNonPanelIconProportion;
if (last_icon_position < reserved_icon_space)
end_position = last_icon_position;
else
end_position = std::max(end_position, reserved_icon_space);
bounds->overflow_bounds.set_size(
gfx::Size(layout_manager_->PrimaryAxisValue(w, width()),
layout_manager_->PrimaryAxisValue(height(), h)));
last_visible_index_ = DetermineLastVisibleIndex(
end_position - button_size);
last_hidden_index_ = DetermineFirstVisiblePanelIndex(end_position) - 1;
bool show_overflow = last_visible_index_ < last_button_index ||
last_hidden_index_ >= first_panel_index;
// Create Space for the overflow button
if (show_overflow &&
last_visible_index_ > 0 && last_visible_index_ < last_button_index)
--last_visible_index_;
for (int i = 0; i < view_model_->view_size(); ++i) {
bool visible = i <= last_visible_index_ || i > last_hidden_index_;
// To receive drag event continuously from |drag_view_| during the dragging
// off from the shelf, don't make |drag_view_| invisible. It will be
// eventually invisible and removed from the |view_model_| by
// FinalizeRipOffDrag().
if (dragged_off_shelf_ && view_model_->view_at(i) == drag_view_)
continue;
view_model_->view_at(i)->SetVisible(visible);
}
overflow_button_->SetVisible(show_overflow);
if (show_overflow) {
DCHECK_NE(0, view_model_->view_size());
if (last_visible_index_ == -1) {
x = 0;
y = 0;
} else {
x = layout_manager_->PrimaryAxisValue(
view_model_->ideal_bounds(last_visible_index_).right(),
view_model_->ideal_bounds(last_visible_index_).x());
y = layout_manager_->PrimaryAxisValue(
view_model_->ideal_bounds(last_visible_index_).y(),
view_model_->ideal_bounds(last_visible_index_).bottom());
}
// Set all hidden panel icon positions to be on the overflow button.
for (int i = first_panel_index; i <= last_hidden_index_; ++i)
view_model_->set_ideal_bounds(i, gfx::Rect(x, y, w, h));
// Add more space between last visible item and overflow button.
// Without this, two buttons look too close compared with other items.
x = layout_manager_->PrimaryAxisValue(x + button_spacing, x);
y = layout_manager_->PrimaryAxisValue(y, y + button_spacing);
bounds->overflow_bounds.set_x(x);
bounds->overflow_bounds.set_y(y);
if (overflow_bubble_.get() && overflow_bubble_->IsShowing())
UpdateOverflowRange(overflow_bubble_->shelf_view());
} else {
if (overflow_bubble_)
overflow_bubble_->Hide();
}
}
int ShelfView::DetermineLastVisibleIndex(int max_value) const {
int index = model_->FirstPanelIndex() - 1;
while (index >= 0 &&
layout_manager_->PrimaryAxisValue(
view_model_->ideal_bounds(index).right(),
view_model_->ideal_bounds(index).bottom()) > max_value) {
index--;
}
return index;
}
int ShelfView::DetermineFirstVisiblePanelIndex(int min_value) const {
int index = model_->FirstPanelIndex();
while (index < view_model_->view_size() &&
layout_manager_->PrimaryAxisValue(
view_model_->ideal_bounds(index).right(),
view_model_->ideal_bounds(index).bottom()) < min_value) {
++index;
}
return index;
}
void ShelfView::AddIconObserver(ShelfIconObserver* observer) {
observers_.AddObserver(observer);
}
void ShelfView::RemoveIconObserver(ShelfIconObserver* observer) {
observers_.RemoveObserver(observer);
}
void ShelfView::AnimateToIdealBounds() {
IdealBounds ideal_bounds;
CalculateIdealBounds(&ideal_bounds);
for (int i = 0; i < view_model_->view_size(); ++i) {
View* view = view_model_->view_at(i);
bounds_animator_->AnimateViewTo(view, view_model_->ideal_bounds(i));
// Now that the item animation starts, we have to make sure that the
// padding of the first gets properly transferred to the new first item.
if (i && view->border())
view->SetBorder(views::Border::NullBorder());
}
overflow_button_->SetBoundsRect(ideal_bounds.overflow_bounds);
}
views::View* ShelfView::CreateViewForItem(const ShelfItem& item) {
views::View* view = NULL;
switch (item.type) {
case TYPE_BROWSER_SHORTCUT:
case TYPE_APP_SHORTCUT:
case TYPE_WINDOWED_APP:
case TYPE_PLATFORM_APP:
case TYPE_DIALOG:
case TYPE_APP_PANEL: {
ShelfButton* button = ShelfButton::Create(this, this, layout_manager_);
button->SetImage(item.image);
ReflectItemStatus(item, button);
view = button;
break;
}
case TYPE_APP_LIST: {
view = new AppListButton(this, this, layout_manager_->shelf_widget());
break;
}
default:
break;
}
view->set_context_menu_controller(this);
DCHECK(view);
ConfigureChildView(view);
return view;
}
void ShelfView::FadeIn(views::View* view) {
view->SetVisible(true);
view->layer()->SetOpacity(0);
AnimateToIdealBounds();
bounds_animator_->SetAnimationDelegate(
view,
scoped_ptr<gfx::AnimationDelegate>(new FadeInAnimationDelegate(view)));
}
void ShelfView::PrepareForDrag(Pointer pointer, const ui::LocatedEvent& event) {
DCHECK(!dragging());
DCHECK(drag_view_);
drag_pointer_ = pointer;
start_drag_index_ = view_model_->GetIndexOfView(drag_view_);
if (start_drag_index_== -1) {
CancelDrag(-1);
return;
}
// If the item is no longer draggable, bail out.
ShelfItemDelegate* item_delegate = item_manager_->GetShelfItemDelegate(
model_->items()[start_drag_index_].id);
if (!item_delegate->IsDraggable()) {
CancelDrag(-1);
return;
}
// Move the view to the front so that it appears on top of other views.
ReorderChildView(drag_view_, -1);
bounds_animator_->StopAnimatingView(drag_view_);
}
void ShelfView::ContinueDrag(const ui::LocatedEvent& event) {
// Due to a syncing operation the application might have been removed.
// Bail if it is gone.
int current_index = view_model_->GetIndexOfView(drag_view_);
DCHECK_NE(-1, current_index);
ShelfItemDelegate* item_delegate = item_manager_->GetShelfItemDelegate(
model_->items()[current_index].id);
if (!item_delegate->IsDraggable()) {
CancelDrag(-1);
return;
}
// If this is not a drag and drop host operation and not the app list item,
// check if the item got ripped off the shelf - if it did we are done.
if (!drag_and_drop_shelf_id_ &&
RemovableByRipOff(current_index) != NOT_REMOVABLE) {
if (HandleRipOffDrag(event))
return;
// The rip off handler could have changed the location of the item.
current_index = view_model_->GetIndexOfView(drag_view_);
}
// TODO: I don't think this works correctly with RTL.
gfx::Point drag_point(event.location());
ConvertPointToTarget(drag_view_, this, &drag_point);
// Constrain the location to the range of valid indices for the type.
std::pair<int, int> indices(GetDragRange(current_index));
int first_drag_index = indices.first;
int last_drag_index = indices.second;
// If the last index isn't valid, we're overflowing. Constrain to the app list
// (which is the last visible item).
if (first_drag_index < model_->FirstPanelIndex() &&
last_drag_index > last_visible_index_)
last_drag_index = last_visible_index_;
int x = 0, y = 0;
if (layout_manager_->IsHorizontalAlignment()) {
x = std::max(view_model_->ideal_bounds(indices.first).x(),
drag_point.x() - drag_origin_.x());
x = std::min(view_model_->ideal_bounds(last_drag_index).right() -
view_model_->ideal_bounds(current_index).width(),
x);
if (drag_view_->x() == x)
return;
drag_view_->SetX(x);
} else {
y = std::max(view_model_->ideal_bounds(indices.first).y(),
drag_point.y() - drag_origin_.y());
y = std::min(view_model_->ideal_bounds(last_drag_index).bottom() -
view_model_->ideal_bounds(current_index).height(),
y);
if (drag_view_->y() == y)
return;
drag_view_->SetY(y);
}
int target_index =
views::ViewModelUtils::DetermineMoveIndex(
*view_model_, drag_view_,
layout_manager_->IsHorizontalAlignment() ?
views::ViewModelUtils::HORIZONTAL :
views::ViewModelUtils::VERTICAL,
x, y);
target_index =
std::min(indices.second, std::max(target_index, indices.first));
if (target_index == current_index)
return;
// Change the model, the ShelfItemMoved() callback will handle the
// |view_model_| update.
model_->Move(current_index, target_index);
bounds_animator_->StopAnimatingView(drag_view_);
}
bool ShelfView::HandleRipOffDrag(const ui::LocatedEvent& event) {
int current_index = view_model_->GetIndexOfView(drag_view_);
DCHECK_NE(-1, current_index);
std::string dragged_app_id =
delegate_->GetAppIDForShelfID(model_->items()[current_index].id);
gfx::Point screen_location = event.root_location();
ash::wm::ConvertPointToScreen(GetWidget()->GetNativeWindow()->GetRootWindow(),
&screen_location);
// To avoid ugly forwards and backwards flipping we use different constants
// for ripping off / re-inserting the items.
if (dragged_off_shelf_) {
// If the shelf/overflow bubble bounds contains |screen_location| we insert
// the item back into the shelf.
if (GetBoundsForDragInsertInScreen().Contains(screen_location)) {
if (dragged_off_from_overflow_to_shelf_) {
// During the dragging an item from Shelf to Overflow, it can enter here
// directly because both are located very closly.
main_shelf_->EndDrag(true);
// Stops the animation of |drag_view_| and sets its bounds explicitly
// becase ContinueDrag() stops its animation. Without this, unexpected
// bounds will be set.
bounds_animator_->StopAnimatingView(drag_view_);
int drag_view_index = view_model_->GetIndexOfView(drag_view_);
drag_view_->SetBoundsRect(view_model_->ideal_bounds(drag_view_index));
dragged_off_from_overflow_to_shelf_ = false;
}
// Destroy our proxy view item.
DestroyDragIconProxy();
// Re-insert the item and return simply false since the caller will handle
// the move as in any normal case.
dragged_off_shelf_ = false;
drag_view_->layer()->SetOpacity(1.0f);
// The size of Overflow bubble should be updated immediately when an item
// is re-inserted.
if (is_overflow_mode())
PreferredSizeChanged();
return false;
} else if (is_overflow_mode() &&
main_shelf_->GetBoundsForDragInsertInScreen().Contains(
screen_location)) {
if (!dragged_off_from_overflow_to_shelf_) {
dragged_off_from_overflow_to_shelf_ = true;
drag_image_->SetOpacity(1.0f);
main_shelf_->StartDrag(dragged_app_id, screen_location);
} else {
main_shelf_->Drag(screen_location);
}
} else if (dragged_off_from_overflow_to_shelf_) {
// Makes the |drag_image_| partially disappear again.
dragged_off_from_overflow_to_shelf_ = false;
drag_image_->SetOpacity(kDraggedImageOpacity);
main_shelf_->EndDrag(true);
bounds_animator_->StopAnimatingView(drag_view_);
int drag_view_index = view_model_->GetIndexOfView(drag_view_);
drag_view_->SetBoundsRect(view_model_->ideal_bounds(drag_view_index));
}
// Move our proxy view item.
UpdateDragIconProxy(screen_location);
return true;
}
// Check if we are too far away from the shelf to enter the ripped off state.
// Determine the distance to the shelf.
int delta = CalculateShelfDistance(screen_location);
if (delta > kRipOffDistance) {
// Create a proxy view item which can be moved anywhere.
ShelfButton* button = static_cast<ShelfButton*>(drag_view_);
CreateDragIconProxy(event.root_location(),
button->GetImage(),
drag_view_,
gfx::Vector2d(0, 0),
kDragAndDropProxyScale);
drag_view_->layer()->SetOpacity(0.0f);
dragged_off_shelf_ = true;
if (RemovableByRipOff(current_index) == REMOVABLE) {
// Move the item to the front of the first panel item and hide it.
// ShelfItemMoved() callback will handle the |view_model_| update and
// call AnimateToIdealBounds().
if (current_index != model_->FirstPanelIndex() - 1) {
model_->Move(current_index, model_->FirstPanelIndex() - 1);
StartFadeInLastVisibleItem();
} else if (is_overflow_mode()) {
// Overflow bubble should be shrunk when an item is ripped off.
PreferredSizeChanged();
}
// Make the item partially disappear to show that it will get removed if
// dropped.
drag_image_->SetOpacity(kDraggedImageOpacity);
}
return true;
}
return false;
}
void ShelfView::FinalizeRipOffDrag(bool cancel) {
if (!dragged_off_shelf_)
return;
// Make sure we do not come in here again.
dragged_off_shelf_ = false;
// Coming here we should always have a |drag_view_|.
DCHECK(drag_view_);
int current_index = view_model_->GetIndexOfView(drag_view_);
// If the view isn't part of the model anymore (|current_index| == -1), a sync
// operation must have removed it. In that case we shouldn't change the model
// and only delete the proxy image.
if (current_index == -1) {
DestroyDragIconProxy();
return;
}
// Set to true when the animation should snap back to where it was before.
bool snap_back = false;
// Items which cannot be dragged off will be handled as a cancel.
if (!cancel) {
if (dragged_off_from_overflow_to_shelf_) {
dragged_off_from_overflow_to_shelf_ = false;
main_shelf_->EndDrag(false);
drag_view_->layer()->SetOpacity(1.0f);
} else if (RemovableByRipOff(current_index) != REMOVABLE) {
// Make sure we do not try to remove un-removable items like items which
// were not pinned or have to be always there.
cancel = true;
snap_back = true;
} else {
// Make sure the item stays invisible upon removal.
drag_view_->SetVisible(false);
std::string app_id =
delegate_->GetAppIDForShelfID(model_->items()[current_index].id);
delegate_->UnpinAppWithID(app_id);
}
}
if (cancel || snap_back) {
if (dragged_off_from_overflow_to_shelf_) {
dragged_off_from_overflow_to_shelf_ = false;
// Main shelf handles revert of dragged item.
main_shelf_->EndDrag(true);
drag_view_->layer()->SetOpacity(1.0f);
} else if (!cancelling_drag_model_changed_) {
// Only do something if the change did not come through a model change.
gfx::Rect drag_bounds = drag_image_->GetBoundsInScreen();
gfx::Point relative_to = GetBoundsInScreen().origin();
gfx::Rect target(
gfx::PointAtOffsetFromOrigin(drag_bounds.origin()- relative_to),
drag_bounds.size());
drag_view_->SetBoundsRect(target);
// Hide the status from the active item since we snap it back now. Upon
// animation end the flag gets cleared if |snap_back_from_rip_off_view_|
// is set.
snap_back_from_rip_off_view_ = drag_view_;
ShelfButton* button = static_cast<ShelfButton*>(drag_view_);
button->AddState(ShelfButton::STATE_HIDDEN);
// When a canceling drag model is happening, the view model is diverged
// from the menu model and movements / animations should not be done.
model_->Move(current_index, start_drag_index_);
AnimateToIdealBounds();
}
drag_view_->layer()->SetOpacity(1.0f);
}
DestroyDragIconProxy();
}
ShelfView::RemovableState ShelfView::RemovableByRipOff(int index) const {
DCHECK(index >= 0 && index < model_->item_count());
ShelfItemType type = model_->items()[index].type;
if (type == TYPE_APP_LIST || type == TYPE_DIALOG || !delegate_->CanPin())
return NOT_REMOVABLE;
std::string app_id = delegate_->GetAppIDForShelfID(model_->items()[index].id);
// Note: Only pinned app shortcuts can be removed!
return (type == TYPE_APP_SHORTCUT && delegate_->IsAppPinned(app_id)) ?
REMOVABLE : DRAGGABLE;
}
bool ShelfView::SameDragType(ShelfItemType typea, ShelfItemType typeb) const {
switch (typea) {
case TYPE_APP_SHORTCUT:
case TYPE_BROWSER_SHORTCUT:
return (typeb == TYPE_APP_SHORTCUT || typeb == TYPE_BROWSER_SHORTCUT);
case TYPE_APP_LIST:
case TYPE_PLATFORM_APP:
case TYPE_WINDOWED_APP:
case TYPE_APP_PANEL:
case TYPE_DIALOG:
return typeb == typea;
case TYPE_UNDEFINED:
NOTREACHED() << "ShelfItemType must be set.";
return false;
}
NOTREACHED();
return false;
}
std::pair<int, int> ShelfView::GetDragRange(int index) {
int min_index = -1;
int max_index = -1;
ShelfItemType type = model_->items()[index].type;
for (int i = 0; i < model_->item_count(); ++i) {
if (SameDragType(model_->items()[i].type, type)) {
if (min_index == -1)
min_index = i;
max_index = i;
}
}
return std::pair<int, int>(min_index, max_index);
}
void ShelfView::ConfigureChildView(views::View* view) {
view->SetPaintToLayer(true);
view->layer()->SetFillsBoundsOpaquely(false);
}
void ShelfView::ToggleOverflowBubble() {
if (IsShowingOverflowBubble()) {
overflow_bubble_->Hide();
return;
}
if (!overflow_bubble_)
overflow_bubble_.reset(new OverflowBubble());
ShelfView* overflow_view =
new ShelfView(model_, delegate_, layout_manager_);
overflow_view->overflow_mode_ = true;
overflow_view->Init();
overflow_view->set_owner_overflow_bubble(overflow_bubble_.get());
overflow_view->OnShelfAlignmentChanged();
overflow_view->main_shelf_ = this;
UpdateOverflowRange(overflow_view);
overflow_bubble_->Show(overflow_button_, overflow_view);
Shell::GetInstance()->UpdateShelfVisibility();
}
void ShelfView::OnFadeOutAnimationEnded() {
AnimateToIdealBounds();
StartFadeInLastVisibleItem();
}
void ShelfView::StartFadeInLastVisibleItem() {
// If overflow button is visible and there is a valid new last item, fading
// the new last item in after sliding animation is finished.
if (overflow_button_->visible() && last_visible_index_ >= 0) {
views::View* last_visible_view = view_model_->view_at(last_visible_index_);
last_visible_view->layer()->SetOpacity(0);
bounds_animator_->SetAnimationDelegate(
last_visible_view,
scoped_ptr<gfx::AnimationDelegate>(
new StartFadeAnimationDelegate(this, last_visible_view)));
}
}
void ShelfView::UpdateOverflowRange(ShelfView* overflow_view) const {
const int first_overflow_index = last_visible_index_ + 1;
const int last_overflow_index = last_hidden_index_;
DCHECK_LE(first_overflow_index, last_overflow_index);
DCHECK_LT(last_overflow_index, view_model_->view_size());
overflow_view->first_visible_index_ = first_overflow_index;
overflow_view->last_visible_index_ = last_overflow_index;
}
bool ShelfView::ShouldHideTooltip(const gfx::Point& cursor_location) {
gfx::Rect active_bounds;
for (int i = 0; i < child_count(); ++i) {
views::View* child = child_at(i);
if (child == overflow_button_)
continue;
if (!ShouldShowTooltipForView(child))
continue;
gfx::Rect child_bounds = child->GetMirroredBounds();
active_bounds.Union(child_bounds);
}
return !active_bounds.Contains(cursor_location);
}
gfx::Rect ShelfView::GetVisibleItemsBoundsInScreen() {
gfx::Size preferred_size = GetPreferredSize();
gfx::Point origin(GetMirroredXWithWidthInView(0, preferred_size.width()), 0);
ConvertPointToScreen(this, &origin);
return gfx::Rect(origin, preferred_size);
}
gfx::Rect ShelfView::GetBoundsForDragInsertInScreen() {
gfx::Size preferred_size;
if (is_overflow_mode()) {
DCHECK(owner_overflow_bubble_);
gfx::Rect bubble_bounds =
owner_overflow_bubble_->bubble_view()->GetBubbleBounds();
preferred_size = bubble_bounds.size();
} else {
const int last_button_index = view_model_->view_size() - 1;
gfx::Rect last_button_bounds =
view_model_->view_at(last_button_index)->bounds();
if (overflow_button_->visible() &&
model_->GetItemIndexForType(TYPE_APP_PANEL) == -1) {
// When overflow button is visible and shelf has no panel items,
// last_button_bounds should be overflow button's bounds.
last_button_bounds = overflow_button_->bounds();
}
if (layout_manager_->IsHorizontalAlignment()) {
preferred_size = gfx::Size(last_button_bounds.right() + leading_inset_,
kShelfSize);
} else {
preferred_size = gfx::Size(kShelfSize,
last_button_bounds.bottom() + leading_inset_);
}
}
gfx::Point origin(GetMirroredXWithWidthInView(0, preferred_size.width()), 0);
// In overflow mode, we should use OverflowBubbleView as a source for
// converting |origin| to screen coordinates. When a scroll operation is
// occurred in OverflowBubble, the bounds of ShelfView in OverflowBubble can
// be changed.
if (is_overflow_mode())
ConvertPointToScreen(owner_overflow_bubble_->bubble_view(), &origin);
else
ConvertPointToScreen(this, &origin);
return gfx::Rect(origin, preferred_size);
}
int ShelfView::CancelDrag(int modified_index) {
FinalizeRipOffDrag(true);
if (!drag_view_)
return modified_index;
bool was_dragging = dragging();
int drag_view_index = view_model_->GetIndexOfView(drag_view_);
drag_pointer_ = NONE;
drag_view_ = NULL;
if (drag_view_index == modified_index) {
// The view that was being dragged is being modified. Don't do anything.
return modified_index;
}
if (!was_dragging)
return modified_index;
// Restore previous position, tracking the position of the modified view.
bool at_end = modified_index == view_model_->view_size();
views::View* modified_view =
(modified_index >= 0 && !at_end) ?
view_model_->view_at(modified_index) : NULL;
model_->Move(drag_view_index, start_drag_index_);
// If the modified view will be at the end of the list, return the new end of
// the list.
if (at_end)
return view_model_->view_size();
return modified_view ? view_model_->GetIndexOfView(modified_view) : -1;
}
gfx::Size ShelfView::GetPreferredSize() const {
IdealBounds ideal_bounds;
CalculateIdealBounds(&ideal_bounds);
int last_button_index = is_overflow_mode() ?
last_visible_index_ : view_model_->view_size() - 1;
// When an item is dragged off from the overflow bubble, it is moved to last
// position and and changed to invisible. Overflow bubble size should be
// shrunk to fit only for visible items.
// If |dragged_off_from_overflow_to_shelf_| is set, there will be no invisible
// items in the shelf.
if (is_overflow_mode() &&
dragged_off_shelf_ &&
!dragged_off_from_overflow_to_shelf_ &&
RemovableByRipOff(view_model_->GetIndexOfView(drag_view_)) == REMOVABLE)
last_button_index--;
const gfx::Rect last_button_bounds =
last_button_index >= first_visible_index_ ?
view_model_->ideal_bounds(last_button_index) :
gfx::Rect(gfx::Size(kShelfSize, kShelfSize));
if (layout_manager_->IsHorizontalAlignment()) {
return gfx::Size(last_button_bounds.right() + leading_inset_, kShelfSize);
}
return gfx::Size(kShelfSize,
last_button_bounds.bottom() + leading_inset_);
}
void ShelfView::OnBoundsChanged(const gfx::Rect& previous_bounds) {
// This bounds change is produced by the shelf movement and all content has
// to follow. Using an animation at that time would produce a time lag since
// the animation of the BoundsAnimator has itself a delay before it arrives
// at the required location. As such we tell the animator to go there
// immediately.
BoundsAnimatorDisabler disabler(bounds_animator_.get());
LayoutToIdealBounds();
FOR_EACH_OBSERVER(ShelfIconObserver, observers_,
OnShelfIconPositionsChanged());
if (IsShowingOverflowBubble())
overflow_bubble_->Hide();
}
views::FocusTraversable* ShelfView::GetPaneFocusTraversable() {
return this;
}
void ShelfView::GetAccessibleState(ui::AXViewState* state) {
state->role = ui::AX_ROLE_TOOLBAR;
state->name = l10n_util::GetStringUTF16(IDS_ASH_SHELF_ACCESSIBLE_NAME);
}
void ShelfView::OnGestureEvent(ui::GestureEvent* event) {
if (gesture_handler_.ProcessGestureEvent(*event))
event->StopPropagation();
}
void ShelfView::ShelfItemAdded(int model_index) {
{
base::AutoReset<bool> cancelling_drag(
&cancelling_drag_model_changed_, true);
model_index = CancelDrag(model_index);
}
views::View* view = CreateViewForItem(model_->items()[model_index]);
AddChildView(view);
// Hide the view, it'll be made visible when the animation is done. Using
// opacity 0 here to avoid messing with CalculateIdealBounds which touches
// the view's visibility.
view->layer()->SetOpacity(0);
view_model_->Add(view, model_index);
// Give the button its ideal bounds. That way if we end up animating the
// button before this animation completes it doesn't appear at some random
// spot (because it was in the middle of animating from 0,0 0x0 to its
// target).
IdealBounds ideal_bounds;
CalculateIdealBounds(&ideal_bounds);
view->SetBoundsRect(view_model_->ideal_bounds(model_index));
// The first animation moves all the views to their target position. |view|
// is hidden, so it visually appears as though we are providing space for
// it. When done we'll fade the view in.
AnimateToIdealBounds();
if (model_index <= last_visible_index_ ||
model_index >= model_->FirstPanelIndex()) {
bounds_animator_->SetAnimationDelegate(
view,
scoped_ptr<gfx::AnimationDelegate>(
new StartFadeAnimationDelegate(this, view)));
} else {
// Undo the hiding if animation does not run.
view->layer()->SetOpacity(1.0f);
}
}
void ShelfView::ShelfItemRemoved(int model_index, ShelfID id) {
if (id == context_menu_id_)
launcher_menu_runner_.reset();
{
base::AutoReset<bool> cancelling_drag(
&cancelling_drag_model_changed_, true);
model_index = CancelDrag(model_index);
}
views::View* view = view_model_->view_at(model_index);
view_model_->Remove(model_index);
// When the overflow bubble is visible, the overflow range needs to be set
// before CalculateIdealBounds() gets called. Otherwise CalculateIdealBounds()
// could trigger a ShelfItemChanged() by hiding the overflow bubble and
// since the overflow bubble is not yet synced with the ShelfModel this
// could cause a crash.
if (overflow_bubble_ && overflow_bubble_->IsShowing()) {
last_hidden_index_ = std::min(last_hidden_index_,
view_model_->view_size() - 1);
UpdateOverflowRange(overflow_bubble_->shelf_view());
}
if (view->visible()) {
// The first animation fades out the view. When done we'll animate the rest
// of the views to their target location.
bounds_animator_->AnimateViewTo(view, view->bounds());
bounds_animator_->SetAnimationDelegate(
view,
scoped_ptr<gfx::AnimationDelegate>(
new FadeOutAnimationDelegate(this, view)));
} else {
// We don't need to show a fade out animation for invisible |view|. When an
// item is ripped out from the shelf, its |view| is already invisible.
AnimateToIdealBounds();
}
// Close the tooltip because it isn't needed any longer and its anchor view
// will be deleted soon.
if (tooltip_->GetCurrentAnchorView() == view)
tooltip_->Close();
}
void ShelfView::ShelfItemChanged(int model_index, const ShelfItem& old_item) {
const ShelfItem& item(model_->items()[model_index]);
if (old_item.type != item.type) {
// Type changed, swap the views.
model_index = CancelDrag(model_index);
scoped_ptr<views::View> old_view(view_model_->view_at(model_index));
bounds_animator_->StopAnimatingView(old_view.get());
// Removing and re-inserting a view in our view model will strip the ideal
// bounds from the item. To avoid recalculation of everything the bounds
// get remembered and restored after the insertion to the previous value.
gfx::Rect old_ideal_bounds = view_model_->ideal_bounds(model_index);
view_model_->Remove(model_index);
views::View* new_view = CreateViewForItem(item);
AddChildView(new_view);
view_model_->Add(new_view, model_index);
view_model_->set_ideal_bounds(model_index, old_ideal_bounds);
new_view->SetBoundsRect(old_view->bounds());
return;
}
views::View* view = view_model_->view_at(model_index);
switch (item.type) {
case TYPE_BROWSER_SHORTCUT:
// Fallthrough for the new Shelf since it needs to show the activation
// change as well.
case TYPE_APP_SHORTCUT:
case TYPE_WINDOWED_APP:
case TYPE_PLATFORM_APP:
case TYPE_DIALOG:
case TYPE_APP_PANEL: {
ShelfButton* button = static_cast<ShelfButton*>(view);
ReflectItemStatus(item, button);
// The browser shortcut is currently not a "real" item and as such the
// the image is bogous as well. We therefore keep the image as is for it.
if (item.type != TYPE_BROWSER_SHORTCUT)
button->SetImage(item.image);
button->SchedulePaint();
break;
}
default:
break;
}
}
void ShelfView::ShelfItemMoved(int start_index, int target_index) {
view_model_->Move(start_index, target_index);
// When cancelling a drag due to a shelf item being added, the currently
// dragged item is moved back to its initial position. AnimateToIdealBounds
// will be called again when the new item is added to the |view_model_| but
// at this time the |view_model_| is inconsistent with the |model_|.
if (!cancelling_drag_model_changed_)
AnimateToIdealBounds();
}
void ShelfView::ShelfStatusChanged() {
// Nothing to do here.
}
void ShelfView::PointerPressedOnButton(views::View* view,
Pointer pointer,
const ui::LocatedEvent& event) {
if (drag_view_)
return;
int index = view_model_->GetIndexOfView(view);
if (index == -1)
return;
ShelfItemDelegate* item_delegate = item_manager_->GetShelfItemDelegate(
model_->items()[index].id);
if (view_model_->view_size() <= 1 || !item_delegate->IsDraggable())
return; // View is being deleted or not draggable, ignore request.
drag_view_ = view;
drag_origin_ = gfx::Point(event.x(), event.y());
UMA_HISTOGRAM_ENUMERATION("Ash.ShelfAlignmentUsage",
layout_manager_->SelectValueForShelfAlignment(
SHELF_ALIGNMENT_UMA_ENUM_VALUE_BOTTOM,
SHELF_ALIGNMENT_UMA_ENUM_VALUE_LEFT,
SHELF_ALIGNMENT_UMA_ENUM_VALUE_RIGHT,
-1),
SHELF_ALIGNMENT_UMA_ENUM_VALUE_COUNT);
}
void ShelfView::PointerDraggedOnButton(views::View* view,
Pointer pointer,
const ui::LocatedEvent& event) {
// To prepare all drag types (moving an item in the shelf and dragging off),
// we should check the x-axis and y-axis offset.
if (!dragging() && drag_view_ &&
((std::abs(event.x() - drag_origin_.x()) >= kMinimumDragDistance) ||
(std::abs(event.y() - drag_origin_.y()) >= kMinimumDragDistance))) {
PrepareForDrag(pointer, event);
}
if (drag_pointer_ == pointer)
ContinueDrag(event);
}
void ShelfView::PointerReleasedOnButton(views::View* view,
Pointer pointer,
bool canceled) {
if (canceled) {
CancelDrag(-1);
} else if (drag_pointer_ == pointer) {
FinalizeRipOffDrag(false);
drag_pointer_ = NONE;
AnimateToIdealBounds();
}
// If the drag pointer is NONE, no drag operation is going on and the
// drag_view can be released.
if (drag_pointer_ == NONE)
drag_view_ = NULL;
}
void ShelfView::MouseMovedOverButton(views::View* view) {
if (!ShouldShowTooltipForView(view))
return;
if (!tooltip_->IsVisible())
tooltip_->ResetTimer();
}
void ShelfView::MouseEnteredButton(views::View* view) {
if (!ShouldShowTooltipForView(view))
return;
if (tooltip_->IsVisible()) {
tooltip_->ShowImmediately(view, GetAccessibleName(view));
} else {
tooltip_->ShowDelayed(view, GetAccessibleName(view));
}
}
void ShelfView::MouseExitedButton(views::View* view) {
if (!tooltip_->IsVisible())
tooltip_->StopTimer();
}
base::string16 ShelfView::GetAccessibleName(const views::View* view) {
int view_index = view_model_->GetIndexOfView(view);
// May be -1 while in the process of animating closed.
if (view_index == -1)
return base::string16();
ShelfItemDelegate* item_delegate = item_manager_->GetShelfItemDelegate(
model_->items()[view_index].id);
return item_delegate->GetTitle();
}
void ShelfView::ButtonPressed(views::Button* sender, const ui::Event& event) {
// Do not handle mouse release during drag.
if (dragging())
return;
if (sender == overflow_button_) {
ToggleOverflowBubble();
return;
}
int view_index = view_model_->GetIndexOfView(sender);
// May be -1 while in the process of animating closed.
if (view_index == -1)
return;
// If the previous menu was closed by the same event as this one, we ignore
// the call.
if (!IsUsableEvent(event))
return;
{
ScopedTargetRootWindow scoped_target(
sender->GetWidget()->GetNativeView()->GetRootWindow());
// Slow down activation animations if shift key is pressed.
scoped_ptr<ui::ScopedAnimationDurationScaleMode> slowing_animations;
if (event.IsShiftDown()) {
slowing_animations.reset(new ui::ScopedAnimationDurationScaleMode(
ui::ScopedAnimationDurationScaleMode::SLOW_DURATION));
}
// Collect usage statistics before we decide what to do with the click.
switch (model_->items()[view_index].type) {
case TYPE_APP_SHORTCUT:
case TYPE_WINDOWED_APP:
case TYPE_PLATFORM_APP:
case TYPE_BROWSER_SHORTCUT:
Shell::GetInstance()->metrics()->RecordUserMetricsAction(
UMA_LAUNCHER_CLICK_ON_APP);
break;
case TYPE_APP_LIST:
Shell::GetInstance()->metrics()->RecordUserMetricsAction(
UMA_LAUNCHER_CLICK_ON_APPLIST_BUTTON);
break;
case TYPE_APP_PANEL:
case TYPE_DIALOG:
break;
case TYPE_UNDEFINED:
NOTREACHED() << "ShelfItemType must be set.";
break;
}
ShelfItemDelegate* item_delegate =
item_manager_->GetShelfItemDelegate(model_->items()[view_index].id);
if (!item_delegate->ItemSelected(event))
ShowListMenuForView(model_->items()[view_index], sender, event);
}
}
bool ShelfView::ShowListMenuForView(const ShelfItem& item,
views::View* source,
const ui::Event& event) {
ShelfItemDelegate* item_delegate =
item_manager_->GetShelfItemDelegate(item.id);
list_menu_model_.reset(item_delegate->CreateApplicationMenu(event.flags()));
// Make sure we have a menu and it has at least two items in addition to the
// application title and the 3 spacing separators.
if (!list_menu_model_.get() || list_menu_model_->GetItemCount() <= 5)
return false;
ShowMenu(list_menu_model_.get(),
source,
gfx::Point(),
false,
ui::GetMenuSourceTypeForEvent(event));
return true;
}
void ShelfView::ShowContextMenuForView(views::View* source,
const gfx::Point& point,
ui::MenuSourceType source_type) {
int view_index = view_model_->GetIndexOfView(source);
if (view_index == -1) {
Shell::GetInstance()->ShowContextMenu(point, source_type);
return;
}
ShelfItemDelegate* item_delegate = item_manager_->GetShelfItemDelegate(
model_->items()[view_index].id);
context_menu_model_.reset(item_delegate->CreateContextMenu(
source->GetWidget()->GetNativeView()->GetRootWindow()));
if (!context_menu_model_)
return;
base::AutoReset<ShelfID> reseter(
&context_menu_id_,
view_index == -1 ? 0 : model_->items()[view_index].id);
ShowMenu(context_menu_model_.get(),
source,
point,
true,
source_type);
}
void ShelfView::ShowMenu(ui::MenuModel* menu_model,
views::View* source,
const gfx::Point& click_point,
bool context_menu,
ui::MenuSourceType source_type) {
closing_event_time_ = base::TimeDelta();
launcher_menu_runner_.reset(new views::MenuRunner(
menu_model, context_menu ? views::MenuRunner::CONTEXT_MENU : 0));
ScopedTargetRootWindow scoped_target(
source->GetWidget()->GetNativeView()->GetRootWindow());
// Determine the menu alignment dependent on the shelf.
views::MenuAnchorPosition menu_alignment = views::MENU_ANCHOR_TOPLEFT;
gfx::Rect anchor_point = gfx::Rect(click_point, gfx::Size());
ShelfWidget* shelf = RootWindowController::ForShelf(
GetWidget()->GetNativeView())->shelf();
if (!context_menu) {
// Application lists use a bubble.
ShelfAlignment align = shelf->GetAlignment();
anchor_point = source->GetBoundsInScreen();
// It is possible to invoke the menu while it is sliding into view. To cover
// that case, the screen coordinates are offsetted by the animation delta.
gfx::Vector2d offset =
source->GetWidget()->GetNativeWindow()->bounds().origin() -
source->GetWidget()->GetNativeWindow()->GetTargetBounds().origin();
anchor_point.set_x(anchor_point.x() - offset.x());
anchor_point.set_y(anchor_point.y() - offset.y());
// Shelf items can have an asymmetrical border for spacing reasons.
// Adjust anchor location for this.
if (source->border())
anchor_point.Inset(source->border()->GetInsets());
switch (align) {
case SHELF_ALIGNMENT_BOTTOM:
menu_alignment = views::MENU_ANCHOR_BUBBLE_ABOVE;
break;
case SHELF_ALIGNMENT_LEFT:
menu_alignment = views::MENU_ANCHOR_BUBBLE_RIGHT;
break;
case SHELF_ALIGNMENT_RIGHT:
menu_alignment = views::MENU_ANCHOR_BUBBLE_LEFT;
break;
case SHELF_ALIGNMENT_TOP:
menu_alignment = views::MENU_ANCHOR_BUBBLE_BELOW;
break;
}
}
// If this gets deleted while we are in the menu, the shelf will be gone
// as well.
bool got_deleted = false;
got_deleted_ = &got_deleted;
shelf->ForceUndimming(true);
// NOTE: if you convert to HAS_MNEMONICS be sure and update menu building
// code.
if (launcher_menu_runner_->RunMenuAt(source->GetWidget(),
NULL,
anchor_point,
menu_alignment,
source_type) ==
views::MenuRunner::MENU_DELETED) {
if (!got_deleted) {
got_deleted_ = NULL;
shelf->ForceUndimming(false);
}
return;
}
got_deleted_ = NULL;
shelf->ForceUndimming(false);
// If it is a context menu and we are showing overflow bubble
// we want to hide overflow bubble.
if (owner_overflow_bubble_)
owner_overflow_bubble_->HideBubbleAndRefreshButton();
// Unpinning an item will reset the |launcher_menu_runner_| before coming
// here.
if (launcher_menu_runner_)
closing_event_time_ = launcher_menu_runner_->closing_event_time();
Shell::GetInstance()->UpdateShelfVisibility();
}
void ShelfView::OnBoundsAnimatorProgressed(views::BoundsAnimator* animator) {
FOR_EACH_OBSERVER(ShelfIconObserver, observers_,
OnShelfIconPositionsChanged());
PreferredSizeChanged();
}
void ShelfView::OnBoundsAnimatorDone(views::BoundsAnimator* animator) {
if (snap_back_from_rip_off_view_ && animator == bounds_animator_) {
if (!animator->IsAnimating(snap_back_from_rip_off_view_)) {
// Coming here the animation of the ShelfButton is finished and the
// previously hidden status can be shown again. Since the button itself
// might have gone away or changed locations we check that the button
// is still in the shelf and show its status again.
for (int index = 0; index < view_model_->view_size(); index++) {
views::View* view = view_model_->view_at(index);
if (view == snap_back_from_rip_off_view_) {
ShelfButton* button = static_cast<ShelfButton*>(view);
button->ClearState(ShelfButton::STATE_HIDDEN);
break;
}
}
snap_back_from_rip_off_view_ = NULL;
}
}
}
bool ShelfView::IsUsableEvent(const ui::Event& event) {
if (closing_event_time_ == base::TimeDelta())
return true;
base::TimeDelta delta =
base::TimeDelta(event.time_stamp() - closing_event_time_);
closing_event_time_ = base::TimeDelta();
// TODO(skuhne): This time seems excessive, but it appears that the reposting
// takes that long. Need to come up with a better way of doing this.
return (delta.InMilliseconds() < 0 || delta.InMilliseconds() > 130);
}
const ShelfItem* ShelfView::ShelfItemForView(const views::View* view) const {
int view_index = view_model_->GetIndexOfView(view);
if (view_index == -1)
return NULL;
return &(model_->items()[view_index]);
}
bool ShelfView::ShouldShowTooltipForView(const views::View* view) const {
if (view == GetAppListButtonView() &&
Shell::GetInstance()->GetAppListWindow())
return false;
const ShelfItem* item = ShelfItemForView(view);
if (!item)
return true;
ShelfItemDelegate* item_delegate =
item_manager_->GetShelfItemDelegate(item->id);
return item_delegate->ShouldShowTooltip();
}
int ShelfView::CalculateShelfDistance(const gfx::Point& coordinate) const {
ShelfWidget* shelf = RootWindowController::ForShelf(
GetWidget()->GetNativeView())->shelf();
ShelfAlignment align = shelf->GetAlignment();
const gfx::Rect bounds = GetBoundsInScreen();
int distance = 0;
switch (align) {
case SHELF_ALIGNMENT_BOTTOM:
distance = bounds.y() - coordinate.y();
break;
case SHELF_ALIGNMENT_LEFT:
distance = coordinate.x() - bounds.right();
break;
case SHELF_ALIGNMENT_RIGHT:
distance = bounds.x() - coordinate.x();
break;
case SHELF_ALIGNMENT_TOP:
distance = coordinate.y() - bounds.bottom();
break;
}
return distance > 0 ? distance : 0;
}
} // namespace ash