| // 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 "ui/app_list/views/apps_grid_view.h" |
| |
| #include <algorithm> |
| #include <set> |
| #include <string> |
| |
| #include "base/guid.h" |
| #include "ui/app_list/app_list_constants.h" |
| #include "ui/app_list/app_list_folder_item.h" |
| #include "ui/app_list/app_list_item.h" |
| #include "ui/app_list/app_list_switches.h" |
| #include "ui/app_list/views/app_list_drag_and_drop_host.h" |
| #include "ui/app_list/views/app_list_folder_view.h" |
| #include "ui/app_list/views/app_list_item_view.h" |
| #include "ui/app_list/views/apps_grid_view_delegate.h" |
| #include "ui/app_list/views/page_switcher.h" |
| #include "ui/app_list/views/pulsing_block_view.h" |
| #include "ui/app_list/views/top_icon_animation_view.h" |
| #include "ui/compositor/scoped_layer_animation_settings.h" |
| #include "ui/events/event.h" |
| #include "ui/gfx/animation/animation.h" |
| #include "ui/views/border.h" |
| #include "ui/views/view_model_utils.h" |
| #include "ui/views/widget/widget.h" |
| |
| #if defined(USE_AURA) |
| #include "ui/aura/window.h" |
| #include "ui/aura/window_event_dispatcher.h" |
| #if defined(OS_WIN) |
| #include "ui/views/win/hwnd_util.h" |
| #endif // defined(OS_WIN) |
| #endif // defined(USE_AURA) |
| |
| #if defined(OS_WIN) |
| #include "base/command_line.h" |
| #include "base/files/file_path.h" |
| #include "base/win/shortcut.h" |
| #include "ui/base/dragdrop/drag_utils.h" |
| #include "ui/base/dragdrop/drop_target_win.h" |
| #include "ui/base/dragdrop/os_exchange_data.h" |
| #include "ui/base/dragdrop/os_exchange_data_provider_win.h" |
| #include "ui/gfx/win/dpi.h" |
| #endif |
| |
| namespace app_list { |
| |
| namespace { |
| |
| // Distance a drag needs to be from the app grid to be considered 'outside', at |
| // which point we rearrange the apps to their pre-drag configuration, as a drop |
| // then would be canceled. We have a buffer to make it easier to drag apps to |
| // other pages. |
| const int kDragBufferPx = 20; |
| |
| // Padding space in pixels for fixed layout. |
| const int kLeftRightPadding = 20; |
| const int kTopPadding = 1; |
| |
| // Padding space in pixels between pages. |
| const int kPagePadding = 40; |
| |
| // Preferred tile size when showing in fixed layout. |
| const int kPreferredTileWidth = 88; |
| const int kPreferredTileHeight = 98; |
| |
| // Width in pixels of the area on the sides that triggers a page flip. |
| const int kPageFlipZoneSize = 40; |
| |
| // Delay in milliseconds to do the page flip. |
| const int kPageFlipDelayInMs = 1000; |
| |
| // How many pages on either side of the selected one we prerender. |
| const int kPrerenderPages = 1; |
| |
| // The drag and drop proxy should get scaled by this factor. |
| const float kDragAndDropProxyScale = 1.5f; |
| |
| // Delays in milliseconds to show folder dropping preview circle. |
| const int kFolderDroppingDelay = 150; |
| |
| // Delays in milliseconds to show re-order preview. |
| const int kReorderDelay = 120; |
| |
| // Delays in milliseconds to show folder item reparent UI. |
| const int kFolderItemReparentDelay = 50; |
| |
| // Radius of the circle, in which if entered, show folder dropping preview |
| // UI. |
| const int kFolderDroppingCircleRadius = 15; |
| |
| |
| // RowMoveAnimationDelegate is used when moving an item into a different row. |
| // Before running the animation, the item's layer is re-created and kept in |
| // the original position, then the item is moved to just before its target |
| // position and opacity set to 0. When the animation runs, this delegate moves |
| // the layer and fades it out while fading in the item at the same time. |
| class RowMoveAnimationDelegate : public gfx::AnimationDelegate { |
| public: |
| RowMoveAnimationDelegate(views::View* view, |
| ui::Layer* layer, |
| const gfx::Rect& layer_target) |
| : view_(view), |
| layer_(layer), |
| layer_start_(layer ? layer->bounds() : gfx::Rect()), |
| layer_target_(layer_target) { |
| } |
| virtual ~RowMoveAnimationDelegate() {} |
| |
| // gfx::AnimationDelegate overrides: |
| virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE { |
| view_->layer()->SetOpacity(animation->GetCurrentValue()); |
| view_->layer()->ScheduleDraw(); |
| |
| if (layer_) { |
| layer_->SetOpacity(1 - animation->GetCurrentValue()); |
| layer_->SetBounds(animation->CurrentValueBetween(layer_start_, |
| layer_target_)); |
| layer_->ScheduleDraw(); |
| } |
| } |
| virtual void AnimationEnded(const gfx::Animation* animation) OVERRIDE { |
| view_->layer()->SetOpacity(1.0f); |
| view_->SchedulePaint(); |
| } |
| virtual void AnimationCanceled(const gfx::Animation* animation) OVERRIDE { |
| view_->layer()->SetOpacity(1.0f); |
| view_->SchedulePaint(); |
| } |
| |
| private: |
| // The view that needs to be wrapped. Owned by views hierarchy. |
| views::View* view_; |
| |
| scoped_ptr<ui::Layer> layer_; |
| const gfx::Rect layer_start_; |
| const gfx::Rect layer_target_; |
| |
| DISALLOW_COPY_AND_ASSIGN(RowMoveAnimationDelegate); |
| }; |
| |
| // ItemRemoveAnimationDelegate is used to show animation for removing an item. |
| // This happens when user drags an item into a folder. The dragged item will |
| // be removed from the original list after it is dropped into the folder. |
| class ItemRemoveAnimationDelegate : public gfx::AnimationDelegate { |
| public: |
| explicit ItemRemoveAnimationDelegate(views::View* view) |
| : view_(view) { |
| } |
| |
| virtual ~ItemRemoveAnimationDelegate() { |
| } |
| |
| // gfx::AnimationDelegate overrides: |
| virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE { |
| view_->layer()->SetOpacity(1 - animation->GetCurrentValue()); |
| view_->layer()->ScheduleDraw(); |
| } |
| |
| private: |
| scoped_ptr<views::View> view_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ItemRemoveAnimationDelegate); |
| }; |
| |
| // ItemMoveAnimationDelegate observes when an item finishes animating when it is |
| // not moving between rows. This is to ensure an item is repainted for the |
| // "zoom out" case when releasing an item being dragged. |
| class ItemMoveAnimationDelegate : public gfx::AnimationDelegate { |
| public: |
| ItemMoveAnimationDelegate(views::View* view) : view_(view) {} |
| |
| virtual void AnimationEnded(const gfx::Animation* animation) OVERRIDE { |
| view_->SchedulePaint(); |
| } |
| virtual void AnimationCanceled(const gfx::Animation* animation) OVERRIDE { |
| view_->SchedulePaint(); |
| } |
| |
| private: |
| views::View* view_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ItemMoveAnimationDelegate); |
| }; |
| |
| // Gets the distance between the centers of the |rect_1| and |rect_2|. |
| int GetDistanceBetweenRects(gfx::Rect rect_1, |
| gfx::Rect rect_2) { |
| return (rect_1.CenterPoint() - rect_2.CenterPoint()).Length(); |
| } |
| |
| // Returns true if the |item| is an folder item. |
| bool IsFolderItem(AppListItem* item) { |
| return (item->GetItemType() == AppListFolderItem::kItemType); |
| } |
| |
| bool IsOEMFolderItem(AppListItem* item) { |
| return IsFolderItem(item) && |
| (static_cast<AppListFolderItem*>(item))->folder_type() == |
| AppListFolderItem::FOLDER_TYPE_OEM; |
| } |
| |
| } // namespace |
| |
| #if defined(OS_WIN) |
| // Interprets drag events sent from Windows via the drag/drop API and forwards |
| // them to AppsGridView. |
| // On Windows, in order to have the OS perform the drag properly we need to |
| // provide it with a shortcut file which may or may not exist at the time the |
| // drag is started. Therefore while waiting for that shortcut to be located we |
| // just do a regular "internal" drag and transition into the synchronous drag |
| // when the shortcut is found/created. Hence a synchronous drag is an optional |
| // phase of a regular drag and non-Windows platforms drags are equivalent to a |
| // Windows drag that never enters the synchronous drag phase. |
| class SynchronousDrag : public ui::DragSourceWin { |
| public: |
| SynchronousDrag(AppsGridView* grid_view, |
| AppListItemView* drag_view, |
| const gfx::Point& drag_view_offset) |
| : grid_view_(grid_view), |
| drag_view_(drag_view), |
| drag_view_offset_(drag_view_offset), |
| has_shortcut_path_(false), |
| running_(false), |
| canceled_(false) {} |
| |
| void set_shortcut_path(const base::FilePath& shortcut_path) { |
| has_shortcut_path_ = true; |
| shortcut_path_ = shortcut_path; |
| } |
| |
| bool running() { return running_; } |
| |
| bool CanRun() { |
| return has_shortcut_path_ && !running_; |
| } |
| |
| void Run() { |
| DCHECK(CanRun()); |
| |
| // Prevent the synchronous dragger being destroyed while the drag is |
| // running. |
| scoped_refptr<SynchronousDrag> this_ref = this; |
| running_ = true; |
| |
| ui::OSExchangeData data; |
| SetupExchangeData(&data); |
| |
| // Hide the dragged view because the OS is going to create its own. |
| drag_view_->SetVisible(false); |
| |
| // Blocks until the drag is finished. Calls into the ui::DragSourceWin |
| // methods. |
| DWORD effects; |
| DoDragDrop(ui::OSExchangeDataProviderWin::GetIDataObject(data), |
| this, DROPEFFECT_MOVE | DROPEFFECT_LINK, &effects); |
| |
| // If |drag_view_| is NULL the drag was ended by some reentrant code. |
| if (drag_view_) { |
| // Make the drag view visible again. |
| drag_view_->SetVisible(true); |
| drag_view_->OnSyncDragEnd(); |
| |
| grid_view_->EndDrag(canceled_ || !IsCursorWithinGridView()); |
| } |
| } |
| |
| void EndDragExternally() { |
| CancelDrag(); |
| drag_view_ = NULL; |
| } |
| |
| private: |
| // Overridden from ui::DragSourceWin. |
| virtual void OnDragSourceCancel() OVERRIDE { |
| canceled_ = true; |
| } |
| |
| virtual void OnDragSourceDrop() OVERRIDE { |
| } |
| |
| virtual void OnDragSourceMove() OVERRIDE { |
| grid_view_->UpdateDrag(AppsGridView::MOUSE, GetCursorInGridViewCoords()); |
| } |
| |
| void SetupExchangeData(ui::OSExchangeData* data) { |
| data->SetFilename(shortcut_path_); |
| gfx::ImageSkia image(drag_view_->GetDragImage()); |
| gfx::Size image_size(image.size()); |
| drag_utils::SetDragImageOnDataObject( |
| image, |
| drag_view_offset_ - drag_view_->GetDragImageOffset(), |
| data); |
| } |
| |
| HWND GetGridViewHWND() { |
| return views::HWNDForView(grid_view_); |
| } |
| |
| bool IsCursorWithinGridView() { |
| POINT p; |
| GetCursorPos(&p); |
| return GetGridViewHWND() == WindowFromPoint(p); |
| } |
| |
| gfx::Point GetCursorInGridViewCoords() { |
| POINT p; |
| GetCursorPos(&p); |
| ScreenToClient(GetGridViewHWND(), &p); |
| gfx::Point grid_view_pt(p.x, p.y); |
| grid_view_pt = gfx::win::ScreenToDIPPoint(grid_view_pt); |
| views::View::ConvertPointFromWidget(grid_view_, &grid_view_pt); |
| return grid_view_pt; |
| } |
| |
| AppsGridView* grid_view_; |
| AppListItemView* drag_view_; |
| gfx::Point drag_view_offset_; |
| bool has_shortcut_path_; |
| base::FilePath shortcut_path_; |
| bool running_; |
| bool canceled_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SynchronousDrag); |
| }; |
| #endif // defined(OS_WIN) |
| |
| AppsGridView::AppsGridView(AppsGridViewDelegate* delegate) |
| : model_(NULL), |
| item_list_(NULL), |
| delegate_(delegate), |
| folder_delegate_(NULL), |
| page_switcher_view_(NULL), |
| cols_(0), |
| rows_per_page_(0), |
| selected_view_(NULL), |
| drag_view_(NULL), |
| drag_start_page_(-1), |
| #if defined(OS_WIN) |
| use_synchronous_drag_(true), |
| #endif |
| drag_pointer_(NONE), |
| drop_attempt_(DROP_FOR_NONE), |
| drag_and_drop_host_(NULL), |
| forward_events_to_drag_and_drop_host_(false), |
| page_flip_target_(-1), |
| page_flip_delay_in_ms_(kPageFlipDelayInMs), |
| bounds_animator_(this), |
| activated_folder_item_view_(NULL), |
| dragging_for_reparent_item_(false) { |
| SetPaintToLayer(true); |
| // Clip any icons that are outside the grid view's bounds. These icons would |
| // otherwise be visible to the user when the grid view is off screen. |
| layer()->SetMasksToBounds(true); |
| SetFillsBoundsOpaquely(false); |
| |
| pagination_model_.SetTransitionDurations(kPageTransitionDurationInMs, |
| kOverscrollPageTransitionDurationMs); |
| |
| pagination_model_.AddObserver(this); |
| page_switcher_view_ = new PageSwitcher(&pagination_model_); |
| AddChildView(page_switcher_view_); |
| } |
| |
| AppsGridView::~AppsGridView() { |
| // Coming here |drag_view_| should already be canceled since otherwise the |
| // drag would disappear after the app list got animated away and closed, |
| // which would look odd. |
| DCHECK(!drag_view_); |
| if (drag_view_) |
| EndDrag(true); |
| |
| if (model_) |
| model_->RemoveObserver(this); |
| pagination_model_.RemoveObserver(this); |
| |
| if (item_list_) |
| item_list_->RemoveObserver(this); |
| |
| // Make sure |page_switcher_view_| is deleted before |pagination_model_|. |
| view_model_.Clear(); |
| RemoveAllChildViews(true); |
| } |
| |
| void AppsGridView::SetLayout(int icon_size, int cols, int rows_per_page) { |
| icon_size_.SetSize(icon_size, icon_size); |
| cols_ = cols; |
| rows_per_page_ = rows_per_page; |
| |
| SetBorder(views::Border::CreateEmptyBorder( |
| kTopPadding, kLeftRightPadding, 0, kLeftRightPadding)); |
| } |
| |
| void AppsGridView::ResetForShowApps() { |
| activated_folder_item_view_ = NULL; |
| ClearDragState(); |
| layer()->SetOpacity(1.0f); |
| SetVisible(true); |
| // Set all views to visible in case they weren't made visible again by an |
| // incomplete animation. |
| for (int i = 0; i < view_model_.view_size(); ++i) { |
| view_model_.view_at(i)->SetVisible(true); |
| } |
| CHECK_EQ(item_list_->item_count(), |
| static_cast<size_t>(view_model_.view_size())); |
| } |
| |
| void AppsGridView::SetModel(AppListModel* model) { |
| if (model_) |
| model_->RemoveObserver(this); |
| |
| model_ = model; |
| if (model_) |
| model_->AddObserver(this); |
| |
| Update(); |
| } |
| |
| void AppsGridView::SetItemList(AppListItemList* item_list) { |
| if (item_list_) |
| item_list_->RemoveObserver(this); |
| item_list_ = item_list; |
| if (item_list_) |
| item_list_->AddObserver(this); |
| Update(); |
| } |
| |
| void AppsGridView::SetSelectedView(views::View* view) { |
| if (IsSelectedView(view) || IsDraggedView(view)) |
| return; |
| |
| Index index = GetIndexOfView(view); |
| if (IsValidIndex(index)) |
| SetSelectedItemByIndex(index); |
| } |
| |
| void AppsGridView::ClearSelectedView(views::View* view) { |
| if (view && IsSelectedView(view)) { |
| selected_view_->SchedulePaint(); |
| selected_view_ = NULL; |
| } |
| } |
| |
| void AppsGridView::ClearAnySelectedView() { |
| if (selected_view_) { |
| selected_view_->SchedulePaint(); |
| selected_view_ = NULL; |
| } |
| } |
| |
| bool AppsGridView::IsSelectedView(const views::View* view) const { |
| return selected_view_ == view; |
| } |
| |
| void AppsGridView::EnsureViewVisible(const views::View* view) { |
| if (pagination_model_.has_transition()) |
| return; |
| |
| Index index = GetIndexOfView(view); |
| if (IsValidIndex(index)) |
| pagination_model_.SelectPage(index.page, false); |
| } |
| |
| void AppsGridView::InitiateDrag(AppListItemView* view, |
| Pointer pointer, |
| const ui::LocatedEvent& event) { |
| DCHECK(view); |
| if (drag_view_ || pulsing_blocks_model_.view_size()) |
| return; |
| |
| drag_view_ = view; |
| drag_view_init_index_ = GetIndexOfView(drag_view_); |
| drag_view_offset_ = event.location(); |
| drag_start_page_ = pagination_model_.selected_page(); |
| ExtractDragLocation(event, &drag_start_grid_view_); |
| drag_view_start_ = gfx::Point(drag_view_->x(), drag_view_->y()); |
| } |
| |
| void AppsGridView::StartSettingUpSynchronousDrag() { |
| #if defined(OS_WIN) |
| if (!delegate_ || !use_synchronous_drag_) |
| return; |
| |
| // Folders can't be integrated with the OS. |
| if (IsFolderItem(drag_view_->item())) |
| return; |
| |
| // Favor the drag and drop host over native win32 drag. For the Win8/ash |
| // launcher we want to have ashes drag and drop over win32's. |
| if (drag_and_drop_host_) |
| return; |
| |
| // Never create a second synchronous drag if the drag started in a folder. |
| if (IsDraggingForReparentInRootLevelGridView()) |
| return; |
| |
| synchronous_drag_ = new SynchronousDrag(this, drag_view_, drag_view_offset_); |
| delegate_->GetShortcutPathForApp(drag_view_->item()->id(), |
| base::Bind(&AppsGridView::OnGotShortcutPath, |
| base::Unretained(this), |
| synchronous_drag_)); |
| #endif |
| } |
| |
| bool AppsGridView::RunSynchronousDrag() { |
| #if defined(OS_WIN) |
| if (!synchronous_drag_) |
| return false; |
| |
| if (synchronous_drag_->CanRun()) { |
| if (IsDraggingForReparentInHiddenGridView()) |
| folder_delegate_->SetRootLevelDragViewVisible(false); |
| synchronous_drag_->Run(); |
| synchronous_drag_ = NULL; |
| return true; |
| } else if (!synchronous_drag_->running()) { |
| // The OS drag is not ready yet. If the root grid has a drag view because |
| // a reparent has started, ensure it is visible. |
| if (IsDraggingForReparentInHiddenGridView()) |
| folder_delegate_->SetRootLevelDragViewVisible(true); |
| } |
| #endif |
| return false; |
| } |
| |
| void AppsGridView::CleanUpSynchronousDrag() { |
| #if defined(OS_WIN) |
| if (synchronous_drag_) |
| synchronous_drag_->EndDragExternally(); |
| |
| synchronous_drag_ = NULL; |
| #endif |
| } |
| |
| #if defined(OS_WIN) |
| void AppsGridView::OnGotShortcutPath( |
| scoped_refptr<SynchronousDrag> synchronous_drag, |
| const base::FilePath& path) { |
| // Drag may have ended before we get the shortcut path or a new drag may have |
| // begun. |
| if (synchronous_drag_ != synchronous_drag) |
| return; |
| // Setting the shortcut path here means the next time we hit UpdateDrag() |
| // we'll enter the synchronous drag. |
| // NOTE we don't Run() the drag here because that causes animations not to |
| // update for some reason. |
| synchronous_drag_->set_shortcut_path(path); |
| DCHECK(synchronous_drag_->CanRun()); |
| } |
| #endif |
| |
| bool AppsGridView::UpdateDragFromItem(Pointer pointer, |
| const ui::LocatedEvent& event) { |
| DCHECK(drag_view_); |
| |
| gfx::Point drag_point_in_grid_view; |
| ExtractDragLocation(event, &drag_point_in_grid_view); |
| UpdateDrag(pointer, drag_point_in_grid_view); |
| if (!dragging()) |
| return false; |
| |
| // If a drag and drop host is provided, see if the drag operation needs to be |
| // forwarded. |
| gfx::Point location_in_screen = drag_point_in_grid_view; |
| views::View::ConvertPointToScreen(this, &location_in_screen); |
| DispatchDragEventToDragAndDropHost(location_in_screen); |
| if (drag_and_drop_host_) |
| drag_and_drop_host_->UpdateDragIconProxy(location_in_screen); |
| return true; |
| } |
| |
| void AppsGridView::UpdateDrag(Pointer pointer, const gfx::Point& point) { |
| if (folder_delegate_) |
| UpdateDragStateInsideFolder(pointer, point); |
| |
| // EndDrag was called before if |drag_view_| is NULL. |
| if (!drag_view_) |
| return; |
| |
| if (RunSynchronousDrag()) |
| return; |
| |
| gfx::Vector2d drag_vector(point - drag_start_grid_view_); |
| if (!dragging() && ExceededDragThreshold(drag_vector)) { |
| drag_pointer_ = pointer; |
| // Move the view to the front so that it appears on top of other views. |
| ReorderChildView(drag_view_, -1); |
| bounds_animator_.StopAnimatingView(drag_view_); |
| // Stopping the animation may have invalidated our drag view due to the |
| // view hierarchy changing. |
| if (!drag_view_) |
| return; |
| |
| StartSettingUpSynchronousDrag(); |
| if (!dragging_for_reparent_item_) |
| StartDragAndDropHostDrag(point); |
| } |
| |
| if (drag_pointer_ != pointer) |
| return; |
| |
| last_drag_point_ = point; |
| const Index last_drop_target = drop_target_; |
| DropAttempt last_drop_attempt = drop_attempt_; |
| CalculateDropTarget(last_drag_point_, false); |
| |
| if (IsPointWithinDragBuffer(last_drag_point_)) |
| MaybeStartPageFlipTimer(last_drag_point_); |
| else |
| StopPageFlipTimer(); |
| |
| gfx::Point page_switcher_point(last_drag_point_); |
| views::View::ConvertPointToTarget(this, page_switcher_view_, |
| &page_switcher_point); |
| page_switcher_view_->UpdateUIForDragPoint(page_switcher_point); |
| |
| if (!EnableFolderDragDropUI()) { |
| if (last_drop_target != drop_target_) |
| AnimateToIdealBounds(); |
| drag_view_->SetPosition(drag_view_start_ + drag_vector); |
| return; |
| } |
| |
| // Update drag with folder UI enabled. |
| if (last_drop_target != drop_target_ || |
| last_drop_attempt != drop_attempt_) { |
| if (drop_attempt_ == DROP_FOR_REORDER) { |
| folder_dropping_timer_.Stop(); |
| reorder_timer_.Start(FROM_HERE, |
| base::TimeDelta::FromMilliseconds(kReorderDelay), |
| this, &AppsGridView::OnReorderTimer); |
| } else if (drop_attempt_ == DROP_FOR_FOLDER) { |
| reorder_timer_.Stop(); |
| folder_dropping_timer_.Start(FROM_HERE, |
| base::TimeDelta::FromMilliseconds(kFolderDroppingDelay), |
| this, &AppsGridView::OnFolderDroppingTimer); |
| } |
| |
| // Reset the previous drop target. |
| SetAsFolderDroppingTarget(last_drop_target, false); |
| } |
| |
| drag_view_->SetPosition(drag_view_start_ + drag_vector); |
| } |
| |
| void AppsGridView::EndDrag(bool cancel) { |
| // EndDrag was called before if |drag_view_| is NULL. |
| if (!drag_view_) |
| return; |
| |
| // Coming here a drag and drop was in progress. |
| bool landed_in_drag_and_drop_host = forward_events_to_drag_and_drop_host_; |
| if (forward_events_to_drag_and_drop_host_) { |
| DCHECK(!IsDraggingForReparentInRootLevelGridView()); |
| forward_events_to_drag_and_drop_host_ = false; |
| drag_and_drop_host_->EndDrag(cancel); |
| if (IsDraggingForReparentInHiddenGridView()) { |
| folder_delegate_->DispatchEndDragEventForReparent( |
| true /* events_forwarded_to_drag_drop_host */, |
| cancel /* cancel_drag */); |
| } |
| } else { |
| if (IsDraggingForReparentInHiddenGridView()) { |
| // Forward the EndDrag event to the root level grid view. |
| folder_delegate_->DispatchEndDragEventForReparent( |
| false /* events_forwarded_to_drag_drop_host */, |
| cancel /* cancel_drag */); |
| EndDragForReparentInHiddenFolderGridView(); |
| return; |
| } |
| |
| if (!cancel && dragging()) { |
| // Regular drag ending path, ie, not for reparenting. |
| CalculateDropTarget(last_drag_point_, true); |
| if (IsValidIndex(drop_target_)) { |
| if (!EnableFolderDragDropUI()) { |
| MoveItemInModel(drag_view_, drop_target_); |
| } else { |
| if (drop_attempt_ == DROP_FOR_REORDER) |
| MoveItemInModel(drag_view_, drop_target_); |
| else if (drop_attempt_ == DROP_FOR_FOLDER) |
| MoveItemToFolder(drag_view_, drop_target_); |
| } |
| } |
| } |
| } |
| |
| if (drag_and_drop_host_) { |
| // If we had a drag and drop proxy icon, we delete it and make the real |
| // item visible again. |
| drag_and_drop_host_->DestroyDragIconProxy(); |
| if (landed_in_drag_and_drop_host) { |
| // Move the item directly to the target location, avoiding the "zip back" |
| // animation if the user was pinning it to the shelf. |
| int i = drop_target_.slot; |
| gfx::Rect bounds = view_model_.ideal_bounds(i); |
| drag_view_->SetBoundsRect(bounds); |
| } |
| // Fade in slowly if it landed in the shelf. |
| SetViewHidden(drag_view_, |
| false /* show */, |
| !landed_in_drag_and_drop_host /* animate */); |
| } |
| |
| // The drag can be ended after the synchronous drag is created but before it |
| // is Run(). |
| CleanUpSynchronousDrag(); |
| |
| SetAsFolderDroppingTarget(drop_target_, false); |
| ClearDragState(); |
| AnimateToIdealBounds(); |
| |
| StopPageFlipTimer(); |
| |
| // If user releases mouse inside a folder's grid view, burst the folder |
| // container ink bubble. |
| if (folder_delegate_ && !IsDraggingForReparentInHiddenGridView()) |
| folder_delegate_->UpdateFolderViewBackground(false); |
| } |
| |
| void AppsGridView::StopPageFlipTimer() { |
| page_flip_timer_.Stop(); |
| page_flip_target_ = -1; |
| } |
| |
| AppListItemView* AppsGridView::GetItemViewAt(int index) const { |
| DCHECK(index >= 0 && index < view_model_.view_size()); |
| return static_cast<AppListItemView*>(view_model_.view_at(index)); |
| } |
| |
| void AppsGridView::SetTopItemViewsVisible(bool visible) { |
| int top_item_count = std::min(static_cast<int>(kNumFolderTopItems), |
| view_model_.view_size()); |
| for (int i = 0; i < top_item_count; ++i) |
| GetItemViewAt(i)->SetVisible(visible); |
| } |
| |
| void AppsGridView::ScheduleShowHideAnimation(bool show) { |
| // Stop any previous animation. |
| layer()->GetAnimator()->StopAnimating(); |
| |
| // Set initial state. |
| SetVisible(true); |
| layer()->SetOpacity(show ? 0.0f : 1.0f); |
| |
| ui::ScopedLayerAnimationSettings animation(layer()->GetAnimator()); |
| animation.AddObserver(this); |
| animation.SetTweenType( |
| show ? kFolderFadeInTweenType : kFolderFadeOutTweenType); |
| animation.SetTransitionDuration(base::TimeDelta::FromMilliseconds( |
| show ? kFolderTransitionInDurationMs : kFolderTransitionOutDurationMs)); |
| |
| layer()->SetOpacity(show ? 1.0f : 0.0f); |
| } |
| |
| void AppsGridView::InitiateDragFromReparentItemInRootLevelGridView( |
| AppListItemView* original_drag_view, |
| const gfx::Rect& drag_view_rect, |
| const gfx::Point& drag_point) { |
| DCHECK(original_drag_view && !drag_view_); |
| DCHECK(!dragging_for_reparent_item_); |
| |
| // Create a new AppListItemView to duplicate the original_drag_view in the |
| // folder's grid view. |
| AppListItemView* view = new AppListItemView(this, original_drag_view->item()); |
| AddChildView(view); |
| drag_view_ = view; |
| drag_view_->SetPaintToLayer(true); |
| // Note: For testing purpose, SetFillsBoundsOpaquely can be set to true to |
| // show the gray background. |
| drag_view_->SetFillsBoundsOpaquely(false); |
| drag_view_->SetIconSize(icon_size_); |
| drag_view_->SetBoundsRect(drag_view_rect); |
| drag_view_->SetDragUIState(); // Hide the title of the drag_view_. |
| |
| // Hide the drag_view_ for drag icon proxy. |
| SetViewHidden(drag_view_, |
| true /* hide */, |
| true /* no animate */); |
| |
| // Add drag_view_ to the end of the view_model_. |
| view_model_.Add(drag_view_, view_model_.view_size()); |
| |
| drag_start_page_ = pagination_model_.selected_page(); |
| drag_start_grid_view_ = drag_point; |
| |
| drag_view_start_ = gfx::Point(drag_view_->x(), drag_view_->y()); |
| |
| // Set the flag in root level grid view. |
| dragging_for_reparent_item_ = true; |
| } |
| |
| void AppsGridView::UpdateDragFromReparentItem(Pointer pointer, |
| const gfx::Point& drag_point) { |
| DCHECK(drag_view_); |
| DCHECK(IsDraggingForReparentInRootLevelGridView()); |
| |
| UpdateDrag(pointer, drag_point); |
| } |
| |
| bool AppsGridView::IsDraggedView(const views::View* view) const { |
| return drag_view_ == view; |
| } |
| |
| void AppsGridView::ClearDragState() { |
| drop_attempt_ = DROP_FOR_NONE; |
| drag_pointer_ = NONE; |
| drop_target_ = Index(); |
| drag_start_grid_view_ = gfx::Point(); |
| drag_start_page_ = -1; |
| drag_view_offset_ = gfx::Point(); |
| |
| if (drag_view_) { |
| drag_view_->OnDragEnded(); |
| if (IsDraggingForReparentInRootLevelGridView()) { |
| const int drag_view_index = view_model_.GetIndexOfView(drag_view_); |
| CHECK_EQ(view_model_.view_size() - 1, drag_view_index); |
| DeleteItemViewAtIndex(drag_view_index); |
| } |
| } |
| drag_view_ = NULL; |
| dragging_for_reparent_item_ = false; |
| } |
| |
| void AppsGridView::SetDragViewVisible(bool visible) { |
| DCHECK(drag_view_); |
| SetViewHidden(drag_view_, !visible, true); |
| } |
| |
| void AppsGridView::SetDragAndDropHostOfCurrentAppList( |
| ApplicationDragAndDropHost* drag_and_drop_host) { |
| drag_and_drop_host_ = drag_and_drop_host; |
| } |
| |
| void AppsGridView::Prerender(int page_index) { |
| Layout(); |
| int start = std::max(0, (page_index - kPrerenderPages) * tiles_per_page()); |
| int end = std::min(view_model_.view_size(), |
| (page_index + 1 + kPrerenderPages) * tiles_per_page()); |
| for (int i = start; i < end; i++) { |
| AppListItemView* v = static_cast<AppListItemView*>(view_model_.view_at(i)); |
| v->Prerender(); |
| } |
| } |
| |
| bool AppsGridView::IsAnimatingView(views::View* view) { |
| return bounds_animator_.IsAnimating(view); |
| } |
| |
| gfx::Size AppsGridView::GetPreferredSize() const { |
| const gfx::Insets insets(GetInsets()); |
| const gfx::Size tile_size = gfx::Size(kPreferredTileWidth, |
| kPreferredTileHeight); |
| const int page_switcher_height = |
| page_switcher_view_->GetPreferredSize().height(); |
| return gfx::Size( |
| tile_size.width() * cols_ + insets.width(), |
| tile_size.height() * rows_per_page_ + |
| page_switcher_height + insets.height()); |
| } |
| |
| bool AppsGridView::GetDropFormats( |
| int* formats, |
| std::set<OSExchangeData::CustomFormat>* custom_formats) { |
| // TODO(koz): Only accept a specific drag type for app shortcuts. |
| *formats = OSExchangeData::FILE_NAME; |
| return true; |
| } |
| |
| bool AppsGridView::CanDrop(const OSExchangeData& data) { |
| return true; |
| } |
| |
| int AppsGridView::OnDragUpdated(const ui::DropTargetEvent& event) { |
| return ui::DragDropTypes::DRAG_MOVE; |
| } |
| |
| void AppsGridView::Layout() { |
| if (bounds_animator_.IsAnimating()) |
| bounds_animator_.Cancel(); |
| |
| CalculateIdealBounds(); |
| for (int i = 0; i < view_model_.view_size(); ++i) { |
| views::View* view = view_model_.view_at(i); |
| if (view != drag_view_) |
| view->SetBoundsRect(view_model_.ideal_bounds(i)); |
| } |
| views::ViewModelUtils::SetViewBoundsToIdealBounds(pulsing_blocks_model_); |
| |
| const int page_switcher_height = |
| page_switcher_view_->GetPreferredSize().height(); |
| gfx::Rect rect(GetContentsBounds()); |
| rect.set_y(rect.bottom() - page_switcher_height); |
| rect.set_height(page_switcher_height); |
| page_switcher_view_->SetBoundsRect(rect); |
| } |
| |
| bool AppsGridView::OnKeyPressed(const ui::KeyEvent& event) { |
| bool handled = false; |
| if (selected_view_) |
| handled = selected_view_->OnKeyPressed(event); |
| |
| if (!handled) { |
| const int forward_dir = base::i18n::IsRTL() ? -1 : 1; |
| switch (event.key_code()) { |
| case ui::VKEY_LEFT: |
| MoveSelected(0, -forward_dir, 0); |
| return true; |
| case ui::VKEY_RIGHT: |
| MoveSelected(0, forward_dir, 0); |
| return true; |
| case ui::VKEY_UP: |
| MoveSelected(0, 0, -1); |
| return true; |
| case ui::VKEY_DOWN: |
| MoveSelected(0, 0, 1); |
| return true; |
| case ui::VKEY_PRIOR: { |
| MoveSelected(-1, 0, 0); |
| return true; |
| } |
| case ui::VKEY_NEXT: { |
| MoveSelected(1, 0, 0); |
| return true; |
| } |
| default: |
| break; |
| } |
| } |
| |
| return handled; |
| } |
| |
| bool AppsGridView::OnKeyReleased(const ui::KeyEvent& event) { |
| bool handled = false; |
| if (selected_view_) |
| handled = selected_view_->OnKeyReleased(event); |
| |
| return handled; |
| } |
| |
| void AppsGridView::ViewHierarchyChanged( |
| const ViewHierarchyChangedDetails& details) { |
| if (!details.is_add && details.parent == this) { |
| // The view being delete should not have reference in |view_model_|. |
| CHECK_EQ(-1, view_model_.GetIndexOfView(details.child)); |
| |
| if (selected_view_ == details.child) |
| selected_view_ = NULL; |
| if (activated_folder_item_view_ == details.child) |
| activated_folder_item_view_ = NULL; |
| |
| if (drag_view_ == details.child) |
| EndDrag(true); |
| |
| bounds_animator_.StopAnimatingView(details.child); |
| } |
| } |
| |
| void AppsGridView::Update() { |
| DCHECK(!selected_view_ && !drag_view_); |
| view_model_.Clear(); |
| if (!item_list_ || !item_list_->item_count()) |
| return; |
| for (size_t i = 0; i < item_list_->item_count(); ++i) { |
| views::View* view = CreateViewForItemAtIndex(i); |
| view_model_.Add(view, i); |
| AddChildView(view); |
| } |
| UpdatePaging(); |
| UpdatePulsingBlockViews(); |
| Layout(); |
| SchedulePaint(); |
| } |
| |
| void AppsGridView::UpdatePaging() { |
| int total_page = view_model_.view_size() && tiles_per_page() |
| ? (view_model_.view_size() - 1) / tiles_per_page() + 1 |
| : 0; |
| |
| pagination_model_.SetTotalPages(total_page); |
| } |
| |
| void AppsGridView::UpdatePulsingBlockViews() { |
| const int existing_items = item_list_ ? item_list_->item_count() : 0; |
| const int available_slots = |
| tiles_per_page() - existing_items % tiles_per_page(); |
| const int desired = model_->status() == AppListModel::STATUS_SYNCING ? |
| available_slots : 0; |
| |
| if (pulsing_blocks_model_.view_size() == desired) |
| return; |
| |
| while (pulsing_blocks_model_.view_size() > desired) { |
| views::View* view = pulsing_blocks_model_.view_at(0); |
| pulsing_blocks_model_.Remove(0); |
| delete view; |
| } |
| |
| while (pulsing_blocks_model_.view_size() < desired) { |
| views::View* view = new PulsingBlockView( |
| gfx::Size(kPreferredTileWidth, kPreferredTileHeight), true); |
| pulsing_blocks_model_.Add(view, 0); |
| AddChildView(view); |
| } |
| } |
| |
| views::View* AppsGridView::CreateViewForItemAtIndex(size_t index) { |
| // The drag_view_ might be pending for deletion, therefore view_model_ |
| // may have one more item than item_list_. |
| DCHECK_LE(index, item_list_->item_count()); |
| AppListItemView* view = new AppListItemView(this, |
| item_list_->item_at(index)); |
| view->SetIconSize(icon_size_); |
| view->SetPaintToLayer(true); |
| view->SetFillsBoundsOpaquely(false); |
| return view; |
| } |
| |
| AppsGridView::Index AppsGridView::GetIndexFromModelIndex( |
| int model_index) const { |
| return Index(model_index / tiles_per_page(), model_index % tiles_per_page()); |
| } |
| |
| int AppsGridView::GetModelIndexFromIndex(const Index& index) const { |
| return index.page * tiles_per_page() + index.slot; |
| } |
| |
| void AppsGridView::SetSelectedItemByIndex(const Index& index) { |
| if (GetIndexOfView(selected_view_) == index) |
| return; |
| |
| views::View* new_selection = GetViewAtIndex(index); |
| if (!new_selection) |
| return; // Keep current selection. |
| |
| if (selected_view_) |
| selected_view_->SchedulePaint(); |
| |
| EnsureViewVisible(new_selection); |
| selected_view_ = new_selection; |
| selected_view_->SchedulePaint(); |
| selected_view_->NotifyAccessibilityEvent( |
| ui::AX_EVENT_FOCUS, true); |
| } |
| |
| bool AppsGridView::IsValidIndex(const Index& index) const { |
| return index.page >= 0 && index.page < pagination_model_.total_pages() && |
| index.slot >= 0 && index.slot < tiles_per_page() && |
| GetModelIndexFromIndex(index) < view_model_.view_size(); |
| } |
| |
| AppsGridView::Index AppsGridView::GetIndexOfView( |
| const views::View* view) const { |
| const int model_index = view_model_.GetIndexOfView(view); |
| if (model_index == -1) |
| return Index(); |
| |
| return GetIndexFromModelIndex(model_index); |
| } |
| |
| views::View* AppsGridView::GetViewAtIndex(const Index& index) const { |
| if (!IsValidIndex(index)) |
| return NULL; |
| |
| const int model_index = GetModelIndexFromIndex(index); |
| return view_model_.view_at(model_index); |
| } |
| |
| void AppsGridView::MoveSelected(int page_delta, |
| int slot_x_delta, |
| int slot_y_delta) { |
| if (!selected_view_) |
| return SetSelectedItemByIndex(Index(pagination_model_.selected_page(), 0)); |
| |
| const Index& selected = GetIndexOfView(selected_view_); |
| int target_slot = selected.slot + slot_x_delta + slot_y_delta * cols_; |
| |
| if (selected.slot % cols_ == 0 && slot_x_delta == -1) { |
| if (selected.page > 0) { |
| page_delta = -1; |
| target_slot = selected.slot + cols_ - 1; |
| } else { |
| target_slot = selected.slot; |
| } |
| } |
| |
| if (selected.slot % cols_ == cols_ - 1 && slot_x_delta == 1) { |
| if (selected.page < pagination_model_.total_pages() - 1) { |
| page_delta = 1; |
| target_slot = selected.slot - cols_ + 1; |
| } else { |
| target_slot = selected.slot; |
| } |
| } |
| |
| // Clamp the target slot to the last item if we are moving to the last page |
| // but our target slot is past the end of the item list. |
| if (page_delta && |
| selected.page + page_delta == pagination_model_.total_pages() - 1) { |
| int last_item_slot = (view_model_.view_size() - 1) % tiles_per_page(); |
| if (last_item_slot < target_slot) { |
| target_slot = last_item_slot; |
| } |
| } |
| |
| int target_page = std::min(pagination_model_.total_pages() - 1, |
| std::max(selected.page + page_delta, 0)); |
| SetSelectedItemByIndex(Index(target_page, target_slot)); |
| } |
| |
| void AppsGridView::CalculateIdealBounds() { |
| gfx::Rect rect(GetContentsBounds()); |
| if (rect.IsEmpty()) |
| return; |
| |
| gfx::Size tile_size(kPreferredTileWidth, kPreferredTileHeight); |
| |
| gfx::Rect grid_rect(gfx::Size(tile_size.width() * cols_, |
| tile_size.height() * rows_per_page_)); |
| grid_rect.Intersect(rect); |
| |
| // Page width including padding pixels. A tile.x + page_width means the same |
| // tile slot in the next page. |
| const int page_width = grid_rect.width() + kPagePadding; |
| |
| // If there is a transition, calculates offset for current and target page. |
| const int current_page = pagination_model_.selected_page(); |
| const PaginationModel::Transition& transition = |
| pagination_model_.transition(); |
| const bool is_valid = pagination_model_.is_valid_page(transition.target_page); |
| |
| // Transition to right means negative offset. |
| const int dir = transition.target_page > current_page ? -1 : 1; |
| const int transition_offset = is_valid ? |
| transition.progress * page_width * dir : 0; |
| |
| const int total_views = |
| view_model_.view_size() + pulsing_blocks_model_.view_size(); |
| int slot_index = 0; |
| for (int i = 0; i < total_views; ++i) { |
| if (i < view_model_.view_size() && view_model_.view_at(i) == drag_view_) { |
| if (EnableFolderDragDropUI() && drop_attempt_ == DROP_FOR_FOLDER) |
| ++slot_index; |
| continue; |
| } |
| |
| Index view_index = GetIndexFromModelIndex(slot_index); |
| |
| if (drop_target_ == view_index) { |
| if (EnableFolderDragDropUI() && drop_attempt_ == DROP_FOR_FOLDER) { |
| view_index = GetIndexFromModelIndex(slot_index); |
| } else if (!EnableFolderDragDropUI() || |
| drop_attempt_ == DROP_FOR_REORDER) { |
| ++slot_index; |
| view_index = GetIndexFromModelIndex(slot_index); |
| } |
| } |
| |
| // Decides an x_offset for current item. |
| int x_offset = 0; |
| if (view_index.page < current_page) |
| x_offset = -page_width; |
| else if (view_index.page > current_page) |
| x_offset = page_width; |
| |
| if (is_valid) { |
| if (view_index.page == current_page || |
| view_index.page == transition.target_page) { |
| x_offset += transition_offset; |
| } |
| } |
| |
| const int row = view_index.slot / cols_; |
| const int col = view_index.slot % cols_; |
| gfx::Rect tile_slot( |
| gfx::Point(grid_rect.x() + col * tile_size.width() + x_offset, |
| grid_rect.y() + row * tile_size.height()), |
| tile_size); |
| if (i < view_model_.view_size()) { |
| view_model_.set_ideal_bounds(i, tile_slot); |
| } else { |
| pulsing_blocks_model_.set_ideal_bounds(i - view_model_.view_size(), |
| tile_slot); |
| } |
| |
| ++slot_index; |
| } |
| } |
| |
| void AppsGridView::AnimateToIdealBounds() { |
| const gfx::Rect visible_bounds(GetVisibleBounds()); |
| |
| CalculateIdealBounds(); |
| for (int i = 0; i < view_model_.view_size(); ++i) { |
| views::View* view = view_model_.view_at(i); |
| if (view == drag_view_) |
| continue; |
| |
| const gfx::Rect& target = view_model_.ideal_bounds(i); |
| if (bounds_animator_.GetTargetBounds(view) == target) |
| continue; |
| |
| const gfx::Rect& current = view->bounds(); |
| const bool current_visible = visible_bounds.Intersects(current); |
| const bool target_visible = visible_bounds.Intersects(target); |
| const bool visible = current_visible || target_visible; |
| |
| const int y_diff = target.y() - current.y(); |
| if (visible && y_diff && y_diff % kPreferredTileHeight == 0) { |
| AnimationBetweenRows(view, |
| current_visible, |
| current, |
| target_visible, |
| target); |
| } else if (visible || bounds_animator_.IsAnimating(view)) { |
| bounds_animator_.AnimateViewTo(view, target); |
| bounds_animator_.SetAnimationDelegate( |
| view, |
| scoped_ptr<gfx::AnimationDelegate>( |
| new ItemMoveAnimationDelegate(view))); |
| } else { |
| view->SetBoundsRect(target); |
| } |
| } |
| } |
| |
| void AppsGridView::AnimationBetweenRows(views::View* view, |
| bool animate_current, |
| const gfx::Rect& current, |
| bool animate_target, |
| const gfx::Rect& target) { |
| // Determine page of |current| and |target|. -1 means in the left invisible |
| // page, 0 is the center visible page and 1 means in the right invisible page. |
| const int current_page = current.x() < 0 ? -1 : |
| current.x() >= width() ? 1 : 0; |
| const int target_page = target.x() < 0 ? -1 : |
| target.x() >= width() ? 1 : 0; |
| |
| const int dir = current_page < target_page || |
| (current_page == target_page && current.y() < target.y()) ? 1 : -1; |
| |
| scoped_ptr<ui::Layer> layer; |
| if (animate_current) { |
| layer = view->RecreateLayer(); |
| layer->SuppressPaint(); |
| |
| view->SetFillsBoundsOpaquely(false); |
| view->layer()->SetOpacity(0.f); |
| } |
| |
| gfx::Rect current_out(current); |
| current_out.Offset(dir * kPreferredTileWidth, 0); |
| |
| gfx::Rect target_in(target); |
| if (animate_target) |
| target_in.Offset(-dir * kPreferredTileWidth, 0); |
| view->SetBoundsRect(target_in); |
| bounds_animator_.AnimateViewTo(view, target); |
| |
| bounds_animator_.SetAnimationDelegate( |
| view, |
| scoped_ptr<gfx::AnimationDelegate>( |
| new RowMoveAnimationDelegate(view, layer.release(), current_out))); |
| } |
| |
| void AppsGridView::ExtractDragLocation(const ui::LocatedEvent& event, |
| gfx::Point* drag_point) { |
| #if defined(USE_AURA) && !defined(OS_WIN) |
| // Use root location of |event| instead of location in |drag_view_|'s |
| // coordinates because |drag_view_| has a scale transform and location |
| // could have integer round error and causes jitter. |
| *drag_point = event.root_location(); |
| |
| // GetWidget() could be NULL for tests. |
| if (GetWidget()) { |
| aura::Window::ConvertPointToTarget( |
| GetWidget()->GetNativeWindow()->GetRootWindow(), |
| GetWidget()->GetNativeWindow(), |
| drag_point); |
| } |
| |
| views::View::ConvertPointFromWidget(this, drag_point); |
| #else |
| // For non-aura, root location is not clearly defined but |drag_view_| does |
| // not have the scale transform. So no round error would be introduced and |
| // it's okay to use View::ConvertPointToTarget. |
| *drag_point = event.location(); |
| views::View::ConvertPointToTarget(drag_view_, this, drag_point); |
| #endif |
| } |
| |
| void AppsGridView::CalculateDropTarget(const gfx::Point& drag_point, |
| bool use_page_button_hovering) { |
| if (EnableFolderDragDropUI()) { |
| CalculateDropTargetWithFolderEnabled(drag_point, use_page_button_hovering); |
| return; |
| } |
| |
| int current_page = pagination_model_.selected_page(); |
| gfx::Point point(drag_point); |
| if (!IsPointWithinDragBuffer(drag_point)) { |
| point = drag_start_grid_view_; |
| current_page = drag_start_page_; |
| } |
| |
| if (use_page_button_hovering && |
| page_switcher_view_->bounds().Contains(point)) { |
| gfx::Point page_switcher_point(point); |
| views::View::ConvertPointToTarget(this, page_switcher_view_, |
| &page_switcher_point); |
| int page = page_switcher_view_->GetPageForPoint(page_switcher_point); |
| if (pagination_model_.is_valid_page(page)) { |
| drop_target_.page = page; |
| drop_target_.slot = tiles_per_page() - 1; |
| } |
| } else { |
| gfx::Rect bounds(GetContentsBounds()); |
| const int drop_row = (point.y() - bounds.y()) / kPreferredTileHeight; |
| const int drop_col = std::min(cols_ - 1, |
| (point.x() - bounds.x()) / kPreferredTileWidth); |
| |
| drop_target_.page = current_page; |
| drop_target_.slot = std::max(0, std::min( |
| tiles_per_page() - 1, |
| drop_row * cols_ + drop_col)); |
| } |
| |
| // Limits to the last possible slot on last page. |
| if (drop_target_.page == pagination_model_.total_pages() - 1) { |
| drop_target_.slot = std::min( |
| (view_model_.view_size() - 1) % tiles_per_page(), |
| drop_target_.slot); |
| } |
| } |
| |
| |
| void AppsGridView::CalculateDropTargetWithFolderEnabled( |
| const gfx::Point& drag_point, |
| bool use_page_button_hovering) { |
| gfx::Point point(drag_point); |
| if (!IsPointWithinDragBuffer(drag_point)) { |
| point = drag_start_grid_view_; |
| } |
| |
| if (use_page_button_hovering && |
| page_switcher_view_->bounds().Contains(point)) { |
| gfx::Point page_switcher_point(point); |
| views::View::ConvertPointToTarget(this, page_switcher_view_, |
| &page_switcher_point); |
| int page = page_switcher_view_->GetPageForPoint(page_switcher_point); |
| if (pagination_model_.is_valid_page(page)) |
| drop_attempt_ = DROP_FOR_NONE; |
| } else { |
| DCHECK(drag_view_); |
| // Try to find the nearest target for folder dropping or re-ordering. |
| drop_target_ = GetNearestTileForDragView(); |
| } |
| } |
| |
| void AppsGridView::OnReorderTimer() { |
| if (drop_attempt_ == DROP_FOR_REORDER) |
| AnimateToIdealBounds(); |
| } |
| |
| void AppsGridView::OnFolderItemReparentTimer() { |
| DCHECK(folder_delegate_); |
| if (drag_out_of_folder_container_ && drag_view_) { |
| folder_delegate_->ReparentItem(drag_view_, last_drag_point_); |
| |
| // Set the flag in the folder's grid view. |
| dragging_for_reparent_item_ = true; |
| |
| // Do not observe any data change since it is going to be hidden. |
| item_list_->RemoveObserver(this); |
| item_list_ = NULL; |
| } |
| } |
| |
| void AppsGridView::OnFolderDroppingTimer() { |
| if (drop_attempt_ == DROP_FOR_FOLDER) |
| SetAsFolderDroppingTarget(drop_target_, true); |
| } |
| |
| void AppsGridView::UpdateDragStateInsideFolder(Pointer pointer, |
| const gfx::Point& drag_point) { |
| if (IsUnderOEMFolder()) |
| return; |
| |
| if (IsDraggingForReparentInHiddenGridView()) { |
| // Dispatch drag event to root level grid view for re-parenting folder |
| // folder item purpose. |
| DispatchDragEventForReparent(pointer, drag_point); |
| return; |
| } |
| |
| // Regular drag and drop in a folder's grid view. |
| folder_delegate_->UpdateFolderViewBackground(true); |
| |
| // Calculate if the drag_view_ is dragged out of the folder's container |
| // ink bubble. |
| gfx::Rect bounds_to_folder_view = ConvertRectToParent(drag_view_->bounds()); |
| gfx::Point pt = bounds_to_folder_view.CenterPoint(); |
| bool is_item_dragged_out_of_folder = |
| folder_delegate_->IsPointOutsideOfFolderBoundary(pt); |
| if (is_item_dragged_out_of_folder) { |
| if (!drag_out_of_folder_container_) { |
| folder_item_reparent_timer_.Start( |
| FROM_HERE, |
| base::TimeDelta::FromMilliseconds(kFolderItemReparentDelay), |
| this, |
| &AppsGridView::OnFolderItemReparentTimer); |
| drag_out_of_folder_container_ = true; |
| } |
| } else { |
| folder_item_reparent_timer_.Stop(); |
| drag_out_of_folder_container_ = false; |
| } |
| } |
| |
| bool AppsGridView::IsDraggingForReparentInRootLevelGridView() const { |
| return (!folder_delegate_ && dragging_for_reparent_item_); |
| } |
| |
| bool AppsGridView::IsDraggingForReparentInHiddenGridView() const { |
| return (folder_delegate_ && dragging_for_reparent_item_); |
| } |
| |
| gfx::Rect AppsGridView::GetTargetIconRectInFolder( |
| AppListItemView* drag_item_view, |
| AppListItemView* folder_item_view) { |
| gfx::Rect view_ideal_bounds = view_model_.ideal_bounds( |
| view_model_.GetIndexOfView(folder_item_view)); |
| gfx::Rect icon_ideal_bounds = |
| folder_item_view->GetIconBoundsForTargetViewBounds(view_ideal_bounds); |
| AppListFolderItem* folder_item = |
| static_cast<AppListFolderItem*>(folder_item_view->item()); |
| return folder_item->GetTargetIconRectInFolderForItem( |
| drag_item_view->item(), icon_ideal_bounds); |
| } |
| |
| bool AppsGridView::IsUnderOEMFolder() { |
| if (!folder_delegate_) |
| return false; |
| |
| return folder_delegate_->IsOEMFolder(); |
| } |
| |
| void AppsGridView::DispatchDragEventForReparent(Pointer pointer, |
| const gfx::Point& drag_point) { |
| folder_delegate_->DispatchDragEventForReparent(pointer, drag_point); |
| } |
| |
| void AppsGridView::EndDragFromReparentItemInRootLevel( |
| bool events_forwarded_to_drag_drop_host, |
| bool cancel_drag) { |
| // EndDrag was called before if |drag_view_| is NULL. |
| if (!drag_view_) |
| return; |
| |
| DCHECK(IsDraggingForReparentInRootLevelGridView()); |
| bool cancel_reparent = cancel_drag || drop_attempt_ == DROP_FOR_NONE; |
| if (!events_forwarded_to_drag_drop_host && !cancel_reparent) { |
| CalculateDropTarget(last_drag_point_, true); |
| if (IsValidIndex(drop_target_)) { |
| if (drop_attempt_ == DROP_FOR_REORDER) { |
| ReparentItemForReorder(drag_view_, drop_target_); |
| } else if (drop_attempt_ == DROP_FOR_FOLDER) { |
| ReparentItemToAnotherFolder(drag_view_, drop_target_); |
| } |
| } |
| SetViewHidden(drag_view_, false /* show */, true /* no animate */); |
| } |
| |
| // The drag can be ended after the synchronous drag is created but before it |
| // is Run(). |
| CleanUpSynchronousDrag(); |
| |
| SetAsFolderDroppingTarget(drop_target_, false); |
| if (cancel_reparent) { |
| CancelFolderItemReparent(drag_view_); |
| } else { |
| // By setting |drag_view_| to NULL here, we prevent ClearDragState() from |
| // cleaning up the newly created AppListItemView, effectively claiming |
| // ownership of the newly created drag view. |
| drag_view_->OnDragEnded(); |
| drag_view_ = NULL; |
| } |
| ClearDragState(); |
| AnimateToIdealBounds(); |
| |
| StopPageFlipTimer(); |
| } |
| |
| void AppsGridView::EndDragForReparentInHiddenFolderGridView() { |
| if (drag_and_drop_host_) { |
| // If we had a drag and drop proxy icon, we delete it and make the real |
| // item visible again. |
| drag_and_drop_host_->DestroyDragIconProxy(); |
| } |
| |
| // The drag can be ended after the synchronous drag is created but before it |
| // is Run(). |
| CleanUpSynchronousDrag(); |
| |
| SetAsFolderDroppingTarget(drop_target_, false); |
| ClearDragState(); |
| } |
| |
| void AppsGridView::OnFolderItemRemoved() { |
| DCHECK(folder_delegate_); |
| item_list_ = NULL; |
| } |
| |
| void AppsGridView::StartDragAndDropHostDrag(const gfx::Point& grid_location) { |
| // When a drag and drop host is given, the item can be dragged out of the app |
| // list window. In that case a proxy widget needs to be used. |
| // Note: This code has very likely to be changed for Windows (non metro mode) |
| // when a |drag_and_drop_host_| gets implemented. |
| if (!drag_view_ || !drag_and_drop_host_) |
| return; |
| |
| gfx::Point screen_location = grid_location; |
| views::View::ConvertPointToScreen(this, &screen_location); |
| |
| // Determine the mouse offset to the center of the icon so that the drag and |
| // drop host follows this layer. |
| gfx::Vector2d delta = drag_view_offset_ - |
| drag_view_->GetLocalBounds().CenterPoint(); |
| delta.set_y(delta.y() + drag_view_->title()->size().height() / 2); |
| |
| // We have to hide the original item since the drag and drop host will do |
| // the OS dependent code to "lift off the dragged item". |
| DCHECK(!IsDraggingForReparentInRootLevelGridView()); |
| drag_and_drop_host_->CreateDragIconProxy(screen_location, |
| drag_view_->item()->icon(), |
| drag_view_, |
| delta, |
| kDragAndDropProxyScale); |
| SetViewHidden(drag_view_, |
| true /* hide */, |
| true /* no animation */); |
| } |
| |
| void AppsGridView::DispatchDragEventToDragAndDropHost( |
| const gfx::Point& location_in_screen_coordinates) { |
| if (!drag_view_ || !drag_and_drop_host_) |
| return; |
| |
| if (GetLocalBounds().Contains(last_drag_point_)) { |
| // The event was issued inside the app menu and we should get all events. |
| if (forward_events_to_drag_and_drop_host_) { |
| // The DnD host was previously called and needs to be informed that the |
| // session returns to the owner. |
| forward_events_to_drag_and_drop_host_ = false; |
| drag_and_drop_host_->EndDrag(true); |
| } |
| } else { |
| if (IsFolderItem(drag_view_->item())) |
| return; |
| |
| // The event happened outside our app menu and we might need to dispatch. |
| if (forward_events_to_drag_and_drop_host_) { |
| // Dispatch since we have already started. |
| if (!drag_and_drop_host_->Drag(location_in_screen_coordinates)) { |
| // The host is not active any longer and we cancel the operation. |
| forward_events_to_drag_and_drop_host_ = false; |
| drag_and_drop_host_->EndDrag(true); |
| } |
| } else { |
| if (drag_and_drop_host_->StartDrag(drag_view_->item()->id(), |
| location_in_screen_coordinates)) { |
| // From now on we forward the drag events. |
| forward_events_to_drag_and_drop_host_ = true; |
| // Any flip operations are stopped. |
| StopPageFlipTimer(); |
| } |
| } |
| } |
| } |
| |
| void AppsGridView::MaybeStartPageFlipTimer(const gfx::Point& drag_point) { |
| if (!IsPointWithinDragBuffer(drag_point)) |
| StopPageFlipTimer(); |
| int new_page_flip_target = -1; |
| |
| if (page_switcher_view_->bounds().Contains(drag_point)) { |
| gfx::Point page_switcher_point(drag_point); |
| views::View::ConvertPointToTarget(this, page_switcher_view_, |
| &page_switcher_point); |
| new_page_flip_target = |
| page_switcher_view_->GetPageForPoint(page_switcher_point); |
| } |
| |
| // TODO(xiyuan): Fix this for RTL. |
| if (new_page_flip_target == -1 && drag_point.x() < kPageFlipZoneSize) |
| new_page_flip_target = pagination_model_.selected_page() - 1; |
| |
| if (new_page_flip_target == -1 && |
| drag_point.x() > width() - kPageFlipZoneSize) { |
| new_page_flip_target = pagination_model_.selected_page() + 1; |
| } |
| |
| if (new_page_flip_target == page_flip_target_) |
| return; |
| |
| StopPageFlipTimer(); |
| if (pagination_model_.is_valid_page(new_page_flip_target)) { |
| page_flip_target_ = new_page_flip_target; |
| |
| if (page_flip_target_ != pagination_model_.selected_page()) { |
| page_flip_timer_.Start(FROM_HERE, |
| base::TimeDelta::FromMilliseconds(page_flip_delay_in_ms_), |
| this, &AppsGridView::OnPageFlipTimer); |
| } |
| } |
| } |
| |
| void AppsGridView::OnPageFlipTimer() { |
| DCHECK(pagination_model_.is_valid_page(page_flip_target_)); |
| pagination_model_.SelectPage(page_flip_target_, true); |
| } |
| |
| void AppsGridView::MoveItemInModel(views::View* item_view, |
| const Index& target) { |
| int current_model_index = view_model_.GetIndexOfView(item_view); |
| DCHECK_GE(current_model_index, 0); |
| |
| int target_model_index = GetModelIndexFromIndex(target); |
| if (target_model_index == current_model_index) |
| return; |
| |
| item_list_->RemoveObserver(this); |
| item_list_->MoveItem(current_model_index, target_model_index); |
| view_model_.Move(current_model_index, target_model_index); |
| item_list_->AddObserver(this); |
| |
| if (pagination_model_.selected_page() != target.page) |
| pagination_model_.SelectPage(target.page, false); |
| } |
| |
| void AppsGridView::MoveItemToFolder(views::View* item_view, |
| const Index& target) { |
| const std::string& source_item_id = |
| static_cast<AppListItemView*>(item_view)->item()->id(); |
| AppListItemView* target_view = |
| static_cast<AppListItemView*>(GetViewAtSlotOnCurrentPage(target.slot)); |
| const std::string& target_view_item_id = target_view->item()->id(); |
| |
| // Make change to data model. |
| item_list_->RemoveObserver(this); |
| std::string folder_item_id = |
| model_->MergeItems(target_view_item_id, source_item_id); |
| item_list_->AddObserver(this); |
| if (folder_item_id.empty()) { |
| LOG(ERROR) << "Unable to merge into item id: " << target_view_item_id; |
| return; |
| } |
| if (folder_item_id != target_view_item_id) { |
| // New folder was created, change the view model to replace the old target |
| // view with the new folder item view. |
| size_t folder_item_index; |
| if (item_list_->FindItemIndex(folder_item_id, &folder_item_index)) { |
| int target_view_index = view_model_.GetIndexOfView(target_view); |
| gfx::Rect target_view_bounds = target_view->bounds(); |
| DeleteItemViewAtIndex(target_view_index); |
| views::View* target_folder_view = |
| CreateViewForItemAtIndex(folder_item_index); |
| target_folder_view->SetBoundsRect(target_view_bounds); |
| view_model_.Add(target_folder_view, target_view_index); |
| AddChildView(target_folder_view); |
| } else { |
| LOG(ERROR) << "Folder no longer in item_list: " << folder_item_id; |
| } |
| } |
| |
| // Fade out the drag_view_ and delete it when animation ends. |
| int drag_view_index = view_model_.GetIndexOfView(drag_view_); |
| view_model_.Remove(drag_view_index); |
| bounds_animator_.AnimateViewTo(drag_view_, drag_view_->bounds()); |
| bounds_animator_.SetAnimationDelegate( |
| drag_view_, |
| scoped_ptr<gfx::AnimationDelegate>( |
| new ItemRemoveAnimationDelegate(drag_view_))); |
| UpdatePaging(); |
| } |
| |
| void AppsGridView::ReparentItemForReorder(views::View* item_view, |
| const Index& target) { |
| item_list_->RemoveObserver(this); |
| model_->RemoveObserver(this); |
| |
| AppListItem* reparent_item = static_cast<AppListItemView*>(item_view)->item(); |
| DCHECK(reparent_item->IsInFolder()); |
| const std::string source_folder_id = reparent_item->folder_id(); |
| AppListFolderItem* source_folder = |
| static_cast<AppListFolderItem*>(item_list_->FindItem(source_folder_id)); |
| |
| int target_model_index = GetModelIndexFromIndex(target); |
| |
| // Remove the source folder view if there is only 1 item in it, since the |
| // source folder will be deleted after its only child item removed from it. |
| if (source_folder->ChildItemCount() == 1u) { |
| const int deleted_folder_index = |
| view_model_.GetIndexOfView(activated_folder_item_view()); |
| DeleteItemViewAtIndex(deleted_folder_index); |
| |
| // Adjust |target_model_index| if it is beyond the deleted folder index. |
| if (target_model_index > deleted_folder_index) |
| --target_model_index; |
| } |
| |
| // Move the item from its parent folder to top level item list. |
| // Must move to target_model_index, the location we expect the target item |
| // to be, not the item location we want to insert before. |
| int current_model_index = view_model_.GetIndexOfView(item_view); |
| syncer::StringOrdinal target_position; |
| if (target_model_index < static_cast<int>(item_list_->item_count())) |
| target_position = item_list_->item_at(target_model_index)->position(); |
| model_->MoveItemToFolderAt(reparent_item, "", target_position); |
| view_model_.Move(current_model_index, target_model_index); |
| |
| RemoveLastItemFromReparentItemFolderIfNecessary(source_folder_id); |
| |
| item_list_->AddObserver(this); |
| model_->AddObserver(this); |
| UpdatePaging(); |
| } |
| |
| void AppsGridView::ReparentItemToAnotherFolder(views::View* item_view, |
| const Index& target) { |
| DCHECK(IsDraggingForReparentInRootLevelGridView()); |
| |
| AppListItemView* target_view = |
| static_cast<AppListItemView*>(GetViewAtSlotOnCurrentPage(target.slot)); |
| if (!target_view) |
| return; |
| |
| // Make change to data model. |
| item_list_->RemoveObserver(this); |
| |
| AppListItem* reparent_item = static_cast<AppListItemView*>(item_view)->item(); |
| DCHECK(reparent_item->IsInFolder()); |
| const std::string source_folder_id = reparent_item->folder_id(); |
| AppListFolderItem* source_folder = |
| static_cast<AppListFolderItem*>(item_list_->FindItem(source_folder_id)); |
| |
| // Remove the source folder view if there is only 1 item in it, since the |
| // source folder will be deleted after its only child item merged into the |
| // target item. |
| if (source_folder->ChildItemCount() == 1u) |
| DeleteItemViewAtIndex( |
| view_model_.GetIndexOfView(activated_folder_item_view())); |
| |
| AppListItem* target_item = target_view->item(); |
| |
| // Move item to the target folder. |
| std::string target_id_after_merge = |
| model_->MergeItems(target_item->id(), reparent_item->id()); |
| if (target_id_after_merge.empty()) { |
| LOG(ERROR) << "Unable to reparent to item id: " << target_item->id(); |
| item_list_->AddObserver(this); |
| return; |
| } |
| |
| if (target_id_after_merge != target_item->id()) { |
| // New folder was created, change the view model to replace the old target |
| // view with the new folder item view. |
| const std::string& new_folder_id = reparent_item->folder_id(); |
| size_t new_folder_index; |
| if (item_list_->FindItemIndex(new_folder_id, &new_folder_index)) { |
| int target_view_index = view_model_.GetIndexOfView(target_view); |
| DeleteItemViewAtIndex(target_view_index); |
| views::View* new_folder_view = |
| CreateViewForItemAtIndex(new_folder_index); |
| view_model_.Add(new_folder_view, target_view_index); |
| AddChildView(new_folder_view); |
| } else { |
| LOG(ERROR) << "Folder no longer in item_list: " << new_folder_id; |
| } |
| } |
| |
| RemoveLastItemFromReparentItemFolderIfNecessary(source_folder_id); |
| |
| item_list_->AddObserver(this); |
| |
| // Fade out the drag_view_ and delete it when animation ends. |
| int drag_view_index = view_model_.GetIndexOfView(drag_view_); |
| view_model_.Remove(drag_view_index); |
| bounds_animator_.AnimateViewTo(drag_view_, drag_view_->bounds()); |
| bounds_animator_.SetAnimationDelegate( |
| drag_view_, |
| scoped_ptr<gfx::AnimationDelegate>( |
| new ItemRemoveAnimationDelegate(drag_view_))); |
| UpdatePaging(); |
| } |
| |
| // After moving the re-parenting item out of the folder, if there is only 1 item |
| // left, remove the last item out of the folder, delete the folder and insert it |
| // to the data model at the same position. Make the same change to view_model_ |
| // accordingly. |
| void AppsGridView::RemoveLastItemFromReparentItemFolderIfNecessary( |
| const std::string& source_folder_id) { |
| AppListFolderItem* source_folder = |
| static_cast<AppListFolderItem*>(item_list_->FindItem(source_folder_id)); |
| if (!source_folder || source_folder->ChildItemCount() != 1u) |
| return; |
| |
| // Delete view associated with the folder item to be removed. |
| DeleteItemViewAtIndex( |
| view_model_.GetIndexOfView(activated_folder_item_view())); |
| |
| // Now make the data change to remove the folder item in model. |
| AppListItem* last_item = source_folder->item_list()->item_at(0); |
| model_->MoveItemToFolderAt(last_item, "", source_folder->position()); |
| |
| // Create a new item view for the last item in folder. |
| size_t last_item_index; |
| if (!item_list_->FindItemIndex(last_item->id(), &last_item_index) || |
| last_item_index > static_cast<size_t>(view_model_.view_size())) { |
| NOTREACHED(); |
| return; |
| } |
| views::View* last_item_view = CreateViewForItemAtIndex(last_item_index); |
| view_model_.Add(last_item_view, last_item_index); |
| AddChildView(last_item_view); |
| } |
| |
| void AppsGridView::CancelFolderItemReparent(AppListItemView* drag_item_view) { |
| // The icon of the dragged item must target to its final ideal bounds after |
| // the animation completes. |
| CalculateIdealBounds(); |
| |
| gfx::Rect target_icon_rect = |
| GetTargetIconRectInFolder(drag_item_view, activated_folder_item_view_); |
| |
| gfx::Rect drag_view_icon_to_grid = |
| drag_item_view->ConvertRectToParent(drag_item_view->GetIconBounds()); |
| drag_view_icon_to_grid.ClampToCenteredSize( |
| gfx::Size(kPreferredIconDimension, kPreferredIconDimension)); |
| TopIconAnimationView* icon_view = new TopIconAnimationView( |
| drag_item_view->item()->icon(), |
| target_icon_rect, |
| false); /* animate like closing folder */ |
| AddChildView(icon_view); |
| icon_view->SetBoundsRect(drag_view_icon_to_grid); |
| icon_view->TransformView(); |
| } |
| |
| void AppsGridView::CancelContextMenusOnCurrentPage() { |
| int start = pagination_model_.selected_page() * tiles_per_page(); |
| int end = std::min(view_model_.view_size(), start + tiles_per_page()); |
| for (int i = start; i < end; ++i) { |
| AppListItemView* view = |
| static_cast<AppListItemView*>(view_model_.view_at(i)); |
| view->CancelContextMenu(); |
| } |
| } |
| |
| void AppsGridView::DeleteItemViewAtIndex(int index) { |
| views::View* item_view = view_model_.view_at(index); |
| view_model_.Remove(index); |
| if (item_view == drag_view_) |
| drag_view_ = NULL; |
| delete item_view; |
| } |
| |
| bool AppsGridView::IsPointWithinDragBuffer(const gfx::Point& point) const { |
| gfx::Rect rect(GetLocalBounds()); |
| rect.Inset(-kDragBufferPx, -kDragBufferPx, -kDragBufferPx, -kDragBufferPx); |
| return rect.Contains(point); |
| } |
| |
| void AppsGridView::ButtonPressed(views::Button* sender, |
| const ui::Event& event) { |
| if (dragging()) |
| return; |
| |
| if (strcmp(sender->GetClassName(), AppListItemView::kViewClassName)) |
| return; |
| |
| if (delegate_) { |
| // Always set the previous activated_folder_item_view_ to be visible. This |
| // prevents a case where the item would remain hidden due the |
| // |activated_folder_item_view_| changing during the animation. We only |
| // need to track |activated_folder_item_view_| in the root level grid view. |
| if (!folder_delegate_) { |
| if (activated_folder_item_view_) |
| activated_folder_item_view_->SetVisible(true); |
| AppListItemView* pressed_item_view = |
| static_cast<AppListItemView*>(sender); |
| if (IsFolderItem(pressed_item_view->item())) |
| activated_folder_item_view_ = pressed_item_view; |
| else |
| activated_folder_item_view_ = NULL; |
| } |
| delegate_->ActivateApp(static_cast<AppListItemView*>(sender)->item(), |
| event.flags()); |
| } |
| } |
| |
| void AppsGridView::OnListItemAdded(size_t index, AppListItem* item) { |
| EndDrag(true); |
| |
| views::View* view = CreateViewForItemAtIndex(index); |
| view_model_.Add(view, index); |
| AddChildView(view); |
| |
| UpdatePaging(); |
| UpdatePulsingBlockViews(); |
| Layout(); |
| SchedulePaint(); |
| } |
| |
| void AppsGridView::OnListItemRemoved(size_t index, AppListItem* item) { |
| EndDrag(true); |
| |
| DeleteItemViewAtIndex(index); |
| |
| UpdatePaging(); |
| UpdatePulsingBlockViews(); |
| Layout(); |
| SchedulePaint(); |
| } |
| |
| void AppsGridView::OnListItemMoved(size_t from_index, |
| size_t to_index, |
| AppListItem* item) { |
| EndDrag(true); |
| view_model_.Move(from_index, to_index); |
| |
| UpdatePaging(); |
| AnimateToIdealBounds(); |
| } |
| |
| void AppsGridView::TotalPagesChanged() { |
| } |
| |
| void AppsGridView::SelectedPageChanged(int old_selected, int new_selected) { |
| if (dragging()) { |
| CalculateDropTarget(last_drag_point_, true); |
| Layout(); |
| MaybeStartPageFlipTimer(last_drag_point_); |
| } else { |
| ClearSelectedView(selected_view_); |
| Layout(); |
| } |
| } |
| |
| void AppsGridView::TransitionStarted() { |
| CancelContextMenusOnCurrentPage(); |
| } |
| |
| void AppsGridView::TransitionChanged() { |
| // Update layout for valid page transition only since over-scroll no longer |
| // animates app icons. |
| const PaginationModel::Transition& transition = |
| pagination_model_.transition(); |
| if (pagination_model_.is_valid_page(transition.target_page)) |
| Layout(); |
| } |
| |
| void AppsGridView::OnAppListModelStatusChanged() { |
| UpdatePulsingBlockViews(); |
| Layout(); |
| SchedulePaint(); |
| } |
| |
| void AppsGridView::SetViewHidden(views::View* view, bool hide, bool immediate) { |
| ui::ScopedLayerAnimationSettings animator(view->layer()->GetAnimator()); |
| animator.SetPreemptionStrategy( |
| immediate ? ui::LayerAnimator::IMMEDIATELY_SET_NEW_TARGET : |
| ui::LayerAnimator::BLEND_WITH_CURRENT_ANIMATION); |
| view->layer()->SetOpacity(hide ? 0 : 1); |
| } |
| |
| void AppsGridView::OnImplicitAnimationsCompleted() { |
| if (layer()->opacity() == 0.0f) |
| SetVisible(false); |
| } |
| |
| bool AppsGridView::EnableFolderDragDropUI() { |
| // Enable drag and drop folder UI only if it is at the app list root level |
| // and the switch is on and the target folder can still accept new items. |
| return model_->folders_enabled() && !folder_delegate_ && |
| CanDropIntoTarget(drop_target_); |
| } |
| |
| bool AppsGridView::CanDropIntoTarget(const Index& drop_target) { |
| views::View* target_view = GetViewAtSlotOnCurrentPage(drop_target.slot); |
| if (!target_view) |
| return true; |
| |
| AppListItem* target_item = |
| static_cast<AppListItemView*>(target_view)->item(); |
| // Items can be dropped into non-folders (which have no children) or folders |
| // that have fewer than the max allowed items. |
| // OEM folder does not allow to drag/drop other items in it. |
| return target_item->ChildItemCount() < kMaxFolderItems && |
| !IsOEMFolderItem(target_item); |
| } |
| |
| // TODO(jennyz): Optimize the calculation for finding nearest tile. |
| AppsGridView::Index AppsGridView::GetNearestTileForDragView() { |
| Index nearest_tile; |
| nearest_tile.page = -1; |
| nearest_tile.slot = -1; |
| int d_min = -1; |
| |
| // Calculate the top left tile |drag_view| intersects. |
| gfx::Point pt = drag_view_->bounds().origin(); |
| CalculateNearestTileForVertex(pt, &nearest_tile, &d_min); |
| |
| // Calculate the top right tile |drag_view| intersects. |
| pt = drag_view_->bounds().top_right(); |
| CalculateNearestTileForVertex(pt, &nearest_tile, &d_min); |
| |
| // Calculate the bottom left tile |drag_view| intersects. |
| pt = drag_view_->bounds().bottom_left(); |
| CalculateNearestTileForVertex(pt, &nearest_tile, &d_min); |
| |
| // Calculate the bottom right tile |drag_view| intersects. |
| pt = drag_view_->bounds().bottom_right(); |
| CalculateNearestTileForVertex(pt, &nearest_tile, &d_min); |
| |
| const int d_folder_dropping = |
| kFolderDroppingCircleRadius + kPreferredIconDimension / 2; |
| const int d_reorder = |
| kReorderDroppingCircleRadius + kPreferredIconDimension / 2; |
| |
| // If user drags an item across pages to the last page, and targets it |
| // to the last empty slot on it, push the last item for re-ordering. |
| if (IsLastPossibleDropTarget(nearest_tile) && d_min < d_reorder) { |
| drop_attempt_ = DROP_FOR_REORDER; |
| nearest_tile.slot = nearest_tile.slot - 1; |
| return nearest_tile; |
| } |
| |
| if (IsValidIndex(nearest_tile)) { |
| if (d_min < d_folder_dropping) { |
| views::View* target_view = GetViewAtSlotOnCurrentPage(nearest_tile.slot); |
| if (target_view && |
| !IsFolderItem(static_cast<AppListItemView*>(drag_view_)->item())) { |
| // If a non-folder item is dragged to the target slot with an item |
| // sitting on it, attempt to drop the dragged item into the folder |
| // containing the item on nearest_tile. |
| drop_attempt_ = DROP_FOR_FOLDER; |
| return nearest_tile; |
| } else { |
| // If the target slot is blank, or the dragged item is a folder, attempt |
| // to re-order. |
| drop_attempt_ = DROP_FOR_REORDER; |
| return nearest_tile; |
| } |
| } else if (d_min < d_reorder) { |
| // Entering the re-order circle of the slot. |
| drop_attempt_ = DROP_FOR_REORDER; |
| return nearest_tile; |
| } |
| } |
| |
| // If |drag_view| is not entering the re-order or fold dropping region of |
| // any items, cancel any previous re-order or folder dropping timer, and |
| // return itself. |
| drop_attempt_ = DROP_FOR_NONE; |
| reorder_timer_.Stop(); |
| folder_dropping_timer_.Stop(); |
| |
| // When dragging for reparent a folder item, it should go back to its parent |
| // folder item if there is no drop target. |
| if (IsDraggingForReparentInRootLevelGridView()) { |
| DCHECK(activated_folder_item_view_); |
| return GetIndexOfView(activated_folder_item_view_); |
| } |
| |
| return GetIndexOfView(drag_view_); |
| } |
| |
| void AppsGridView::CalculateNearestTileForVertex(const gfx::Point& vertex, |
| Index* nearest_tile, |
| int* d_min) { |
| Index target_index; |
| gfx::Rect target_bounds = GetTileBoundsForPoint(vertex, &target_index); |
| |
| if (target_bounds.IsEmpty() || target_index == *nearest_tile) |
| return; |
| |
| // Do not count the tile, where drag_view_ used to sit on and is still moving |
| // on top of it, in calculating nearest tile for drag_view_. |
| views::View* target_view = GetViewAtSlotOnCurrentPage(target_index.slot); |
| if (target_index == drag_view_init_index_ && !target_view && |
| !IsDraggingForReparentInRootLevelGridView()) { |
| return; |
| } |
| |
| int d_center = GetDistanceBetweenRects(drag_view_->bounds(), target_bounds); |
| if (*d_min < 0 || d_center < *d_min) { |
| *d_min = d_center; |
| *nearest_tile = target_index; |
| } |
| } |
| |
| gfx::Rect AppsGridView::GetTileBoundsForPoint(const gfx::Point& point, |
| Index *tile_index) { |
| // Check if |point| is outside of contents bounds. |
| gfx::Rect bounds(GetContentsBounds()); |
| if (!bounds.Contains(point)) |
| return gfx::Rect(); |
| |
| // Calculate which tile |point| is enclosed in. |
| int x = point.x(); |
| int y = point.y(); |
| int col = (x - bounds.x()) / kPreferredTileWidth; |
| int row = (y - bounds.y()) / kPreferredTileHeight; |
| gfx::Rect tile_rect = GetTileBounds(row, col); |
| |
| // Check if |point| is outside a valid item's tile. |
| Index index(pagination_model_.selected_page(), row * cols_ + col); |
| *tile_index = index; |
| return tile_rect; |
| } |
| |
| gfx::Rect AppsGridView::GetTileBounds(int row, int col) const { |
| gfx::Rect bounds(GetContentsBounds()); |
| gfx::Size tile_size(kPreferredTileWidth, kPreferredTileHeight); |
| gfx::Rect grid_rect(gfx::Size(tile_size.width() * cols_, |
| tile_size.height() * rows_per_page_)); |
| grid_rect.Intersect(bounds); |
| gfx::Rect tile_rect( |
| gfx::Point(grid_rect.x() + col * tile_size.width(), |
| grid_rect.y() + row * tile_size.height()), |
| tile_size); |
| return tile_rect; |
| } |
| |
| bool AppsGridView::IsLastPossibleDropTarget(const Index& index) const { |
| int last_possible_slot = view_model_.view_size() % tiles_per_page(); |
| return (index.page == pagination_model_.total_pages() - 1 && |
| index.slot == last_possible_slot + 1); |
| } |
| |
| views::View* AppsGridView::GetViewAtSlotOnCurrentPage(int slot) { |
| if (slot < 0) |
| return NULL; |
| |
| // Calculate the original bound of the tile at |index|. |
| int row = slot / cols_; |
| int col = slot % cols_; |
| gfx::Rect tile_rect = GetTileBounds(row, col); |
| |
| for (int i = 0; i < view_model_.view_size(); ++i) { |
| views::View* view = view_model_.view_at(i); |
| if (view->bounds() == tile_rect && view != drag_view_) |
| return view; |
| } |
| return NULL; |
| } |
| |
| void AppsGridView::SetAsFolderDroppingTarget(const Index& target_index, |
| bool is_target_folder) { |
| AppListItemView* target_view = |
| static_cast<AppListItemView*>( |
| GetViewAtSlotOnCurrentPage(target_index.slot)); |
| if (target_view) |
| target_view->SetAsAttemptedFolderTarget(is_target_folder); |
| } |
| |
| } // namespace app_list |