Wires up shelf to panel and dock layoutmanagers

mash/wm/shelf_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 "mash/wm/shelf_layout_manager.h"
 
 #include "components/mus/public/cpp/window.h"
 #include "mash/wm/property_util.h"
 #include "mash/wm/public/interfaces/ash_window_type.mojom.h"
+#include "mash/wm/shelf_layout_manager_delegate.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace mash {
 namespace wm {
 
-ShelfLayoutManager::ShelfLayoutManager(mus::Window* owner)
+ShelfLayoutManager::ShelfLayoutManager(mus::Window* owner,
+                                       ShelfLayoutManagerDelegate* delegate)
     : LayoutManager(owner),
+      delegate_(delegate),
       alignment_(shelf::mojom::Alignment::BOTTOM),
       auto_hide_behavior_(shelf::mojom::AutoHideBehavior::NEVER) {
   AddLayoutProperty(mus::mojom::WindowManager::kPreferredSize_Property);
 }
 
 ShelfLayoutManager::~ShelfLayoutManager() {}
 
 mus::Window* ShelfLayoutManager::GetShelfWindow() {
   for (mus::Window* child : owner()->children()) {
     if (GetAshWindowType(child) == mojom::AshWindowType::SHELF)
       return child;
   }
   return nullptr;
 }
 
+void ShelfLayoutManager::SetAlignment(shelf::mojom::Alignment alignment) {
+  if (alignment_ == alignment)
+    return;
+
+  alignment_ = alignment;
+  for (mus::Window* window : owner()->children())
+    LayoutWindow(window);
+}
+
+void ShelfLayoutManager::SetAutoHideBehavior(
+    shelf::mojom::AutoHideBehavior auto_hide) {
+  if (auto_hide_behavior_ == auto_hide)
+    return;
+
+  auto_hide_behavior_ = auto_hide;
+  NOTIMPLEMENTED();
+}
+
 // 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 ShelfLayoutManager::LayoutWindow(mus::Window* window) {
   if (GetAshWindowType(window) != mojom::AshWindowType::SHELF) {
     // Phantom windows end up in this container, ignore them.
     return;
   }
   gfx::Size size = GetWindowPreferredSize(window);
 
   if (alignment_ == shelf::mojom::Alignment::BOTTOM) {
     const int y = owner()->bounds().height() - size.height();
     size.set_width(owner()->bounds().width());
     window->SetBounds(gfx::Rect(0, y, size.width(), size.height()));
   } else {
     const int x = (alignment_ == shelf::mojom::Alignment::LEFT)
                       ? 0
                       : (owner()->bounds().width() - size.width());
     size.set_height(owner()->bounds().height());
     window->SetBounds(gfx::Rect(x, 0, size.width(), size.height()));
   }
 }
 
-void ShelfLayoutManager::SetAlignment(shelf::mojom::Alignment alignment) {
-  if (alignment_ == alignment)
-    return;
-
-  alignment_ = alignment;
-  for (mus::Window* window : owner()->children())
-    LayoutWindow(window);
-}
-
-void ShelfLayoutManager::SetAutoHideBehavior(
-    shelf::mojom::AutoHideBehavior auto_hide) {
-  if (auto_hide_behavior_ == auto_hide)
-    return;
-
-  auto_hide_behavior_ = auto_hide;
-  NOTIMPLEMENTED();
+void ShelfLayoutManager::WindowAdded(mus::Window* window) {
+  if (GetAshWindowType(window) == mojom::AshWindowType::SHELF)
+    delegate_->OnShelfWindowAvailable();
 }
 
 }  // namespace wm
 }  // namespace mash