chromeos: Move files in //ash/common to //ash, part 1

ash/common/system/status_area_widget_delegate.cc

-// 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/common/system/status_area_widget_delegate.h"
-
-#include "ash/common/focus_cycler.h"
-#include "ash/common/shelf/shelf_constants.h"
-#include "ash/common/shelf/wm_shelf.h"
-#include "ash/common/shelf/wm_shelf_util.h"
-#include "ash/common/system/tray/tray_constants.h"
-#include "ash/common/wm_shell.h"
-#include "ash/common/wm_window.h"
-#include "ash/root_window_controller.h"
-#include "ui/compositor/layer.h"
-#include "ui/compositor/scoped_layer_animation_settings.h"
-#include "ui/gfx/animation/tween.h"
-#include "ui/views/accessible_pane_view.h"
-#include "ui/views/border.h"
-#include "ui/views/layout/grid_layout.h"
-
-namespace {
-
-constexpr int kAnimationDurationMs = 250;
-
-constexpr int kPaddingFromEdgeOfShelf = 3;
-
-class StatusAreaWidgetDelegateAnimationSettings
-    : public ui::ScopedLayerAnimationSettings {
- public:
-  explicit StatusAreaWidgetDelegateAnimationSettings(ui::Layer* layer)
-      : ui::ScopedLayerAnimationSettings(layer->GetAnimator()) {
-    SetTransitionDuration(
-        base::TimeDelta::FromMilliseconds(kAnimationDurationMs));
-    SetPreemptionStrategy(ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
-    SetTweenType(gfx::Tween::EASE_IN_OUT);
-  }
-
-  ~StatusAreaWidgetDelegateAnimationSettings() override {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(StatusAreaWidgetDelegateAnimationSettings);
-};
-
-}  // namespace
-
-namespace ash {
-
-StatusAreaWidgetDelegate::StatusAreaWidgetDelegate()
-    : focus_cycler_for_testing_(nullptr), alignment_(SHELF_ALIGNMENT_BOTTOM) {
-  // Allow the launcher to surrender the focus to another window upon
-  // navigation completion by the user.
-  set_allow_deactivate_on_esc(true);
-  SetPaintToLayer();
-  layer()->SetFillsBoundsOpaquely(false);
-}
-
-StatusAreaWidgetDelegate::~StatusAreaWidgetDelegate() {}
-
-void StatusAreaWidgetDelegate::SetFocusCyclerForTesting(
-    const FocusCycler* focus_cycler) {
-  focus_cycler_for_testing_ = focus_cycler;
-}
-
-views::View* StatusAreaWidgetDelegate::GetDefaultFocusableChild() {
-  return child_at(0);
-}
-
-views::Widget* StatusAreaWidgetDelegate::GetWidget() {
-  return View::GetWidget();
-}
-
-const views::Widget* StatusAreaWidgetDelegate::GetWidget() const {
-  return View::GetWidget();
-}
-
-void StatusAreaWidgetDelegate::OnGestureEvent(ui::GestureEvent* event) {
-  views::Widget* target_widget =
-      static_cast<views::View*>(event->target())->GetWidget();
-  WmWindow* target_window = WmWindow::Get(target_widget->GetNativeWindow());
-  WmShelf* shelf = target_window->GetRootWindowController()->GetShelf();
-  if (shelf->ProcessGestureEvent(*event))
-    event->StopPropagation();
-  else
-    views::AccessiblePaneView::OnGestureEvent(event);
-}
-
-bool StatusAreaWidgetDelegate::CanActivate() const {
-  // We don't want mouse clicks to activate us, but we need to allow
-  // activation when the user is using the keyboard (FocusCycler).
-  const FocusCycler* focus_cycler = focus_cycler_for_testing_
-                                        ? focus_cycler_for_testing_
-                                        : WmShell::Get()->focus_cycler();
-  return focus_cycler->widget_activating() == GetWidget();
-}
-
-void StatusAreaWidgetDelegate::DeleteDelegate() {}
-
-void StatusAreaWidgetDelegate::AddTray(views::View* tray) {
-  SetLayoutManager(NULL);  // Reset layout manager before adding a child.
-  AddChildView(tray);
-  // Set the layout manager with the new list of children.
-  UpdateLayout();
-}
-
-void StatusAreaWidgetDelegate::UpdateLayout() {
-  // Use a grid layout so that the trays can be centered in each cell, and
-  // so that the widget gets laid out correctly when tray sizes change.
-  views::GridLayout* layout = new views::GridLayout(this);
-  SetLayoutManager(layout);
-
-  // Update tray border based on layout.
-  bool is_child_on_edge = true;
-  for (int c = 0; c < child_count(); ++c) {
-    views::View* child = child_at(c);
-    if (!child->visible())
-      continue;
-    SetBorderOnChild(child, is_child_on_edge);
-    is_child_on_edge = false;
-  }
-
-  views::ColumnSet* columns = layout->AddColumnSet(0);
-
-  if (IsHorizontalAlignment(alignment_)) {
-    for (int c = child_count() - 1; c >= 0; --c) {
-      views::View* child = child_at(c);
-      if (!child->visible())
-        continue;
-      columns->AddColumn(views::GridLayout::CENTER, views::GridLayout::FILL,
-                         0, /* resize percent */
-                         views::GridLayout::USE_PREF, 0, 0);
-    }
-    layout->StartRow(0, 0);
-    for (int c = child_count() - 1; c >= 0; --c) {
-      views::View* child = child_at(c);
-      if (child->visible())
-        layout->AddView(child);
-    }
-  } else {
-    columns->AddColumn(views::GridLayout::FILL, views::GridLayout::CENTER,
-                       0, /* resize percent */
-                       views::GridLayout::USE_PREF, 0, 0);
-    for (int c = child_count() - 1; c >= 0; --c) {
-      views::View* child = child_at(c);
-      if (!child->visible())
-        continue;
-      layout->StartRow(0, 0);
-      layout->AddView(child);
-    }
-  }
-
-  layer()->GetAnimator()->StopAnimating();
-  StatusAreaWidgetDelegateAnimationSettings settings(layer());
-
-  Layout();
-  UpdateWidgetSize();
-}
-
-void StatusAreaWidgetDelegate::ChildPreferredSizeChanged(View* child) {
-  // Need to resize the window when trays or items are added/removed.
-  StatusAreaWidgetDelegateAnimationSettings settings(layer());
-  UpdateWidgetSize();
-}
-
-void StatusAreaWidgetDelegate::ChildVisibilityChanged(View* child) {
-  UpdateLayout();
-}
-
-void StatusAreaWidgetDelegate::UpdateWidgetSize() {
-  if (GetWidget())
-    GetWidget()->SetSize(GetPreferredSize());
-}
-
-void StatusAreaWidgetDelegate::SetBorderOnChild(views::View* child,
-                                                bool extend_border_to_edge) {
-  // Tray views are laid out right-to-left or bottom-to-top.
-  const bool horizontal_alignment = IsHorizontalAlignment(alignment_);
-  const int padding = (GetShelfConstant(SHELF_SIZE) - kTrayItemSize) / 2;
-
-  const int top_edge = horizontal_alignment ? padding : 0;
-  const int left_edge = horizontal_alignment ? 0 : padding;
-  const int bottom_edge =
-      horizontal_alignment
-          ? padding
-          : (extend_border_to_edge ? kPaddingFromEdgeOfShelf : 0);
-  const int right_edge =
-      horizontal_alignment
-          ? (extend_border_to_edge ? kPaddingFromEdgeOfShelf : 0)
-          : padding;
-  child->SetBorder(
-      views::CreateEmptyBorder(top_edge, left_edge, bottom_edge, right_edge));
-
-  // Layout on |child| needs to be updated based on new border value before
-  // displaying; otherwise |child| will be showing with old border size.
-  // Fix for crbug.com/623438.
-  child->Layout();
-}
-
-}  // namespace ash