Skeleton for app_list on OSX, and refactoring for enable_app_list=1 on OS=="mac".

ui/app_list/app_list_item_view.cc

Index: ui/app_list/app_list_item_view.cc
diff --git a/ui/app_list/app_list_item_view.cc b/ui/app_list/app_list_item_view.cc
deleted file mode 100644
index 1a9fb78ee3d017df62094a4423160768a97f5595..0000000000000000000000000000000000000000
--- a/ui/app_list/app_list_item_view.cc
+++ /dev/null
@@ -1,344 +0,0 @@
-// 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/app_list_item_view.h"
-
-#include <algorithm>
-
-#include "base/utf_string_conversions.h"
-#include "ui/app_list/app_list_item_model.h"
-#include "ui/app_list/apps_grid_view.h"
-#include "ui/base/accessibility/accessible_view_state.h"
-#include "ui/base/animation/throb_animation.h"
-#include "ui/base/resource/resource_bundle.h"
-#include "ui/compositor/layer.h"
-#include "ui/compositor/scoped_layer_animation_settings.h"
-#include "ui/gfx/canvas.h"
-#include "ui/gfx/font.h"
-#include "ui/gfx/image/image_skia_operations.h"
-#include "ui/gfx/transform_util.h"
-#include "ui/views/controls/image_view.h"
-#include "ui/views/controls/label.h"
-#include "ui/views/controls/menu/menu_item_view.h"
-#include "ui/views/controls/menu/menu_model_adapter.h"
-#include "ui/views/controls/menu/menu_runner.h"
-
-namespace app_list {
-
-namespace {
-
-const int kTopBottomPadding = 10;
-const int kTopPadding = 20;
-const int kIconTitleSpacing = 7;
-
-const SkColor kTitleColor = SkColorSetRGB(0x5A, 0x5A, 0x5A);
-const SkColor kTitleHoverColor = SkColorSetRGB(0x3C, 0x3C, 0x3C);
-
-const SkColor kHoverAndPushedColor = SkColorSetARGB(0x19, 0, 0, 0);
-const SkColor kSelectedColor = SkColorSetARGB(0x0D, 0, 0, 0);
-const SkColor kHighlightedColor = kHoverAndPushedColor;
-
-const int kLeftRightPaddingChars = 1;
-
-// Scale to transform the icon when a drag starts.
-const float kDraggingIconScale = 1.5f;
-
-// Delay in milliseconds of when the dragging UI should be shown for mouse drag.
-const int kMouseDragUIDelayInMs = 100;
-
-}  // namespace
-
-// static
-const char AppListItemView::kViewClassName[] = "ui/app_list/AppListItemView";
-
-AppListItemView::AppListItemView(AppsGridView* apps_grid_view,
-                                 AppListItemModel* model)
-    : CustomButton(apps_grid_view),
-      model_(model),
-      apps_grid_view_(apps_grid_view),
-      icon_(new views::ImageView),
-      title_(new views::Label),
-      ui_state_(UI_STATE_NORMAL),
-      touch_dragging_(false) {
-  icon_->set_interactive(false);
-
-  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
-  title_->SetBackgroundColor(0);
-  title_->SetAutoColorReadabilityEnabled(false);
-  title_->SetEnabledColor(kTitleColor);
-  title_->SetFont(rb.GetFont(ui::ResourceBundle::SmallBoldFont));
-  title_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
-
-  const gfx::ShadowValue kIconShadows[] = {
-    gfx::ShadowValue(gfx::Point(0, 2), 2, SkColorSetARGB(0x24, 0, 0, 0)),
-  };
-  icon_shadows_.assign(kIconShadows, kIconShadows + arraysize(kIconShadows));
-
-  AddChildView(icon_);
-  AddChildView(title_);
-
-  ItemIconChanged();
-  ItemTitleChanged();
-  model_->AddObserver(this);
-
-  set_context_menu_controller(this);
-  set_request_focus_on_press(false);
-}
-
-AppListItemView::~AppListItemView() {
-  model_->RemoveObserver(this);
-}
-
-void AppListItemView::SetIconSize(const gfx::Size& size) {
-  if (icon_size_ == size)
-    return;
-
-  icon_size_ = size;
-  UpdateIcon();
-}
-
-void AppListItemView::UpdateIcon() {
-  // Skip if |icon_size_| has not been determined.
-  if (icon_size_.IsEmpty())
-    return;
-
-  gfx::ImageSkia icon = model_->icon();
-  // Clear icon and bail out if model icon is empty.
-  if (icon.isNull()) {
-    icon_->SetImage(NULL);
-    return;
-  }
-
-  gfx::ImageSkia resized(gfx::ImageSkiaOperations::CreateResizedImage(icon,
-      skia::ImageOperations::RESIZE_BEST, icon_size_));
-  gfx::ImageSkia shadow(
-      gfx::ImageSkiaOperations::CreateImageWithDropShadow(resized,
-                                                          icon_shadows_));
-  icon_->SetImage(shadow);
-}
-
-void AppListItemView::SetUIState(UIState state) {
-  if (ui_state_ == state)
-    return;
-
-  ui_state_ = state;
-
-#if defined(USE_AURA)
-  ui::ScopedLayerAnimationSettings settings(layer()->GetAnimator());
-  switch (ui_state_) {
-    case UI_STATE_NORMAL:
-      title_->SetVisible(true);
-      layer()->SetTransform(gfx::Transform());
-      break;
-    case UI_STATE_DRAGGING:
-      title_->SetVisible(false);
-      const gfx::Rect bounds(layer()->bounds().size());
-      layer()->SetTransform(gfx::GetScaleTransform(
-          bounds.CenterPoint(),
-          kDraggingIconScale));
-      break;
-  }
-#endif
-}
-
-void AppListItemView::SetTouchDragging(bool touch_dragging) {
-  if (touch_dragging_ == touch_dragging)
-    return;
-
-  touch_dragging_ = touch_dragging;
-  SetUIState(touch_dragging_ ? UI_STATE_DRAGGING : UI_STATE_NORMAL);
-}
-
-void AppListItemView::OnMouseDragTimer() {
-  DCHECK(apps_grid_view_->IsDraggedView(this));
-  SetUIState(UI_STATE_DRAGGING);
-}
-
-void AppListItemView::ItemIconChanged() {
-  UpdateIcon();
-}
-
-void AppListItemView::ItemTitleChanged() {
-  title_->SetText(UTF8ToUTF16(model_->title()));
-}
-
-void AppListItemView::ItemHighlightedChanged() {
-  apps_grid_view_->EnsureViewVisible(this);
-  SchedulePaint();
-}
-
-std::string AppListItemView::GetClassName() const {
-  return kViewClassName;
-}
-
-void AppListItemView::Layout() {
-  gfx::Rect rect(GetContentsBounds());
-
-  const int left_right_padding = kLeftRightPaddingChars *
-      title_->font().GetAverageCharacterWidth();
-  rect.Inset(left_right_padding, kTopPadding, left_right_padding, 0);
-  const int y = rect.y();
-
-  gfx::Rect icon_bounds(rect.x(), y, rect.width(), icon_size_.height());
-  icon_bounds.Inset(gfx::ShadowValue::GetMargin(icon_shadows_));
-  icon_->SetBoundsRect(icon_bounds);
-
-  const gfx::Size title_size = title_->GetPreferredSize();
-  gfx::Rect title_bounds(rect.x() + (rect.width() - title_size.width()) / 2,
-                         y + icon_size_.height() + kIconTitleSpacing,
-                         title_size.width(),
-                         title_size.height());
-  title_bounds.Intersect(rect);
-  title_->SetBoundsRect(title_bounds);
-}
-
-void AppListItemView::OnPaint(gfx::Canvas* canvas) {
-  if (apps_grid_view_->IsDraggedView(this))
-    return;
-
-  gfx::Rect rect(GetContentsBounds());
-
-  if (model_->highlighted()) {
-    canvas->FillRect(rect, kHighlightedColor);
-  } else if (hover_animation_->is_animating()) {
-    int alpha = SkColorGetA(kHoverAndPushedColor) *
-        hover_animation_->GetCurrentValue();
-    canvas->FillRect(rect, SkColorSetA(kHoverAndPushedColor, alpha));
-  } else if (state() == STATE_HOVERED || state() == STATE_PRESSED) {
-    canvas->FillRect(rect, kHoverAndPushedColor);
-  } else if (apps_grid_view_->IsSelectedView(this)) {
-    canvas->FillRect(rect, kSelectedColor);
-  }
-}
-
-void AppListItemView::GetAccessibleState(ui::AccessibleViewState* state) {
-  state->role = ui::AccessibilityTypes::ROLE_PUSHBUTTON;
-  state->name = UTF8ToUTF16(model_->title());
-}
-
-void AppListItemView::ShowContextMenuForView(views::View* source,
-                                             const gfx::Point& point) {
-  ui::MenuModel* menu_model = model_->GetContextMenuModel();
-  if (!menu_model)
-    return;
-
-  views::MenuModelAdapter menu_adapter(menu_model);
-  context_menu_runner_.reset(
-      new views::MenuRunner(new views::MenuItemView(&menu_adapter)));
-  menu_adapter.BuildMenu(context_menu_runner_->GetMenu());
-  if (context_menu_runner_->RunMenuAt(
-          GetWidget(), NULL, gfx::Rect(point, gfx::Size()),
-          views::MenuItemView::TOPLEFT, views::MenuRunner::HAS_MNEMONICS) ==
-      views::MenuRunner::MENU_DELETED)
-    return;
-}
-
-void AppListItemView::StateChanged() {
-  if (state() == STATE_HOVERED || state() == STATE_PRESSED) {
-    apps_grid_view_->SetSelectedView(this);
-    title_->SetEnabledColor(kTitleHoverColor);
-  } else {
-    apps_grid_view_->ClearSelectedView(this);
-    model_->SetHighlighted(false);
-    title_->SetEnabledColor(kTitleColor);
-  }
-}
-
-bool AppListItemView::ShouldEnterPushedState(const ui::Event& event) {
-  // Don't enter pushed state for ET_GESTURE_TAP_DOWN so that hover gray
-  // background does not show up during scroll.
-  if (event.type() == ui::ET_GESTURE_TAP_DOWN)
-    return false;
-
-  return views::CustomButton::ShouldEnterPushedState(event);
-}
-
-bool AppListItemView::OnMousePressed(const ui::MouseEvent& event) {
-  CustomButton::OnMousePressed(event);
-
-  if (!ShouldEnterPushedState(event))
-    return true;
-
-  apps_grid_view_->InitiateDrag(this, AppsGridView::MOUSE, event);
-
-  if (apps_grid_view_->IsDraggedView(this)) {
-    mouse_drag_timer_.Start(FROM_HERE,
-        base::TimeDelta::FromMilliseconds(kMouseDragUIDelayInMs),
-        this, &AppListItemView::OnMouseDragTimer);
-  }
-  return true;
-}
-
-void AppListItemView::OnMouseReleased(const ui::MouseEvent& event) {
-  CustomButton::OnMouseReleased(event);
-  apps_grid_view_->EndDrag(false);
-  mouse_drag_timer_.Stop();
-  SetUIState(UI_STATE_NORMAL);
-}
-
-void AppListItemView::OnMouseCaptureLost() {
-  CustomButton::OnMouseCaptureLost();
-  apps_grid_view_->EndDrag(true);
-  mouse_drag_timer_.Stop();
-  SetUIState(UI_STATE_NORMAL);
-}
-
-bool AppListItemView::OnMouseDragged(const ui::MouseEvent& event) {
-  CustomButton::OnMouseDragged(event);
-  apps_grid_view_->UpdateDrag(this, AppsGridView::MOUSE, event);
-
-  // Shows dragging UI when it's confirmed without waiting for the timer.
-  if (ui_state_ != UI_STATE_DRAGGING &&
-      apps_grid_view_->dragging() &&
-      apps_grid_view_->IsDraggedView(this)) {
-    mouse_drag_timer_.Stop();
-    SetUIState(UI_STATE_DRAGGING);
-  }
-  return true;
-}
-
-void AppListItemView::OnGestureEvent(ui::GestureEvent* event) {
-  switch (event->type()) {
-    case ui::ET_GESTURE_SCROLL_BEGIN:
-      if (touch_dragging_) {
-        apps_grid_view_->InitiateDrag(this, AppsGridView::TOUCH, *event);
-        event->SetHandled();
-      }
-      break;
-    case ui::ET_GESTURE_SCROLL_UPDATE:
-      if (touch_dragging_) {
-        apps_grid_view_->UpdateDrag(this, AppsGridView::TOUCH, *event);
-        event->SetHandled();
-      }
-      break;
-    case ui::ET_GESTURE_SCROLL_END:
-    case ui::ET_SCROLL_FLING_START:
-      if (touch_dragging_) {
-        SetTouchDragging(false);
-        apps_grid_view_->EndDrag(false);
-        event->SetHandled();
-      }
-      break;
-    case ui::ET_GESTURE_LONG_PRESS:
-      if (!apps_grid_view_->has_dragged_view())
-        SetTouchDragging(true);
-      event->SetHandled();
-      break;
-    case ui::ET_GESTURE_END:
-      if (touch_dragging_) {
-        SetTouchDragging(false);
-
-        gfx::Point location(event->location());
-        ConvertPointToScreen(this, &location);
-        ShowContextMenu(location, true);
-      }
-      break;
-    default:
-      break;
-  }
-  if (!event->handled())
-    CustomButton::OnGestureEvent(event);
-}
-
-}  // namespace app_list