mash: Show status area widget, attempt 2

ash/mus/status_layout_manager.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 "ash/mus/status_layout_manager.h"
-
-#include "ash/mus/property_util.h"
-#include "ash/public/interfaces/ash_window_type.mojom.h"
-#include "services/ui/public/cpp/window.h"
-#include "ui/gfx/geometry/rect.h"
-
-namespace ash {
-namespace mus {
-
-StatusLayoutManager::StatusLayoutManager(ui::Window* owner)
-    : LayoutManager(owner),
-      alignment_(mash::shelf::mojom::Alignment::BOTTOM),
-      auto_hide_behavior_(mash::shelf::mojom::AutoHideBehavior::NEVER) {
-  AddLayoutProperty(ui::mojom::WindowManager::kPreferredSize_Property);
-}
-
-StatusLayoutManager::~StatusLayoutManager() {}
-
-// 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
-// status area restarts.
-
-void StatusLayoutManager::LayoutWindow(ui::Window* window) {
-  if (GetAshWindowType(window) != mojom::AshWindowType::STATUS_AREA) {
-    // TODO(jamescook): Layout for notifications and other windows.
-    NOTIMPLEMENTED() << "Non-status-area window needs layout.";
-    return;
-  }
-  gfx::Size size = GetWindowPreferredSize(window);
-  if (alignment_ == mash::shelf::mojom::Alignment::BOTTOM) {
-    const int y = owner()->bounds().height() - size.height();
-    // TODO(msw): Place the status area widget on the left for RTL UIs.
-    window->SetBounds(gfx::Rect(owner()->bounds().width() - size.width(), y,
-                                size.width(), size.height()));
-  } else {
-    const int x = (alignment_ == mash::shelf::mojom::Alignment::LEFT)
-                      ? 0
-                      : (owner()->bounds().width() - size.width());
-    window->SetBounds(gfx::Rect(x, owner()->bounds().height() - size.height(),
-                                size.width(), size.height()));
-  }
-}
-
-void StatusLayoutManager::SetAlignment(
-    mash::shelf::mojom::Alignment alignment) {
-  if (alignment_ == alignment)
-    return;
-
-  alignment_ = alignment;
-  for (ui::Window* window : owner()->children())
-    LayoutWindow(window);
-}
-
-void StatusLayoutManager::SetAutoHideBehavior(
-    mash::shelf::mojom::AutoHideBehavior auto_hide) {
-  if (auto_hide_behavior_ == auto_hide)
-    return;
-
-  auto_hide_behavior_ = auto_hide;
-  NOTIMPLEMENTED();
-}
-
-}  // namespace mus
-}  // namespace ash