mash: Add status area container to mash window manager

mash/wm/shelf_layout.cc

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "mash/wm/shelf_layout.h"
-
-#include "components/mus/public/cpp/property_type_converters.h"
-#include "components/mus/public/cpp/window.h"
-#include "components/mus/public/cpp/window_property.h"
-#include "mash/wm/property_util.h"
-#include "mash/wm/public/interfaces/ash_window_type.mojom.h"
-#include "ui/gfx/geometry/rect.h"
-
-namespace mash {
-namespace wm {
-
-namespace {
-
-mojom::AshWindowType GetAshWindowType(const mus::Window* window) {
-  if (!window->HasSharedProperty(mojom::kAshWindowType_Property))
-    return mojom::AshWindowType::COUNT;
-
-  return static_cast<mojom::AshWindowType>(
-      window->GetSharedProperty<int32_t>(mojom::kAshWindowType_Property));
-}
-
-}  // namespace
-
-ShelfLayout::ShelfLayout(mus::Window* owner)
-    : LayoutManager(owner),
-      alignment_(mash::shelf::mojom::Alignment::BOTTOM),
-      auto_hide_behavior_(mash::shelf::mojom::AutoHideBehavior::NEVER) {
-  AddLayoutProperty(mus::mojom::WindowManager::kPreferredSize_Property);
-}
-
-ShelfLayout::~ShelfLayout() {}
-
-// We explicitly don't make assertions about the number of children in this
-// layout as the number of children can vary when the application providing the
-// shelf restarts.
-
-void ShelfLayout::LayoutWindow(mus::Window* window) {
-  const mojom::AshWindowType ash_window_type = GetAshWindowType(window);
-  gfx::Size size = GetWindowPreferredSize(window);
-
-  if (alignment_ == mash::shelf::mojom::Alignment::BOTTOM) {
-    const int y = owner()->bounds().height() - size.height();
-    if (ash_window_type == mojom::AshWindowType::SHELF) {
-      size.set_width(owner()->bounds().width());
-      window->SetBounds(gfx::Rect(0, y, size.width(), size.height()));
-    } else if (ash_window_type == mojom::AshWindowType::STATUS_AREA) {
-      // TODO(msw): Place the status area on the left for RTL UIs.
-      window->SetBounds(gfx::Rect(owner()->bounds().width() - size.width(), y,
-                                  size.width(), size.height()));
-    } else {
-      NOTREACHED() << "Unknown window in USER_SHELF container.";
-    }
-  } else {
-    const int x = (alignment_ == mash::shelf::mojom::Alignment::LEFT)
-                      ? 0
-                      : (owner()->bounds().width() - size.width());
-    if (ash_window_type == mojom::AshWindowType::SHELF) {
-      size.set_height(owner()->bounds().height());
-      window->SetBounds(gfx::Rect(x, 0, size.width(), size.height()));
-    } else if (ash_window_type == mojom::AshWindowType::STATUS_AREA) {
-      window->SetBounds(gfx::Rect(x, owner()->bounds().height() - size.height(),
-                                  size.width(), size.height()));
-    } else {
-      NOTREACHED() << "Unknown window in USER_SHELF container.";
-    }
-  }
-}
-
-void ShelfLayout::SetAlignment(mash::shelf::mojom::Alignment alignment) {
-  if (alignment_ == alignment)
-    return;
-
-  alignment_ = alignment;
-  for (mus::Window* window : owner()->children())
-    LayoutWindow(window);
-}
-
-void ShelfLayout::SetAutoHideBehavior(
-    mash::shelf::mojom::AutoHideBehavior auto_hide) {
-  if (auto_hide_behavior_ == auto_hide)
-    return;
-
-  auto_hide_behavior_ = auto_hide;
-  NOTIMPLEMENTED();
-}
-
-}  // namespace wm
-}  // namespace mash