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mojo/services/view_manager/server_view.h

+// Copyright 2014 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.
+
+#ifndef SERVICES_VIEW_MANAGER_SERVER_VIEW_H_
+#define SERVICES_VIEW_MANAGER_SERVER_VIEW_H_
+
+#include <vector>
+
+#include "base/logging.h"
+#include "cc/surfaces/surface_id.h"
+#include "mojo/services/view_manager/ids.h"
+#include "third_party/mojo_services/src/view_manager/public/interfaces/view_manager.mojom.h"
+#include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/transform.h"
+
+namespace view_manager {
+
+class ServerViewDelegate;
+
+// Server side representation of a view. Delegate is informed of interesting
+// events.
+//
+// It is assumed that all functions that mutate the tree have validated the
+// mutation is possible before hand. For example, Reorder() assumes the supplied
+// view is a child and not already in position.
+class ServerView {
+ public:
+  ServerView(ServerViewDelegate* delegate, const ViewId& id);
+  virtual ~ServerView();
+
+  const ViewId& id() const { return id_; }
+
+  void Add(ServerView* child);
+  void Remove(ServerView* child);
+  void Reorder(ServerView* child,
+               ServerView* relative,
+               mojo::OrderDirection direction);
+
+  const gfx::Rect& bounds() const { return bounds_; }
+  void SetBounds(const gfx::Rect& bounds);
+
+  const ServerView* parent() const { return parent_; }
+  ServerView* parent() { return parent_; }
+
+  const ServerView* GetRoot() const;
+  ServerView* GetRoot() {
+    return const_cast<ServerView*>(
+        const_cast<const ServerView*>(this)->GetRoot());
+  }
+
+  std::vector<const ServerView*> GetChildren() const;
+  std::vector<ServerView*> GetChildren();
+
+  // Returns true if this contains |view| or is |view|.
+  bool Contains(const ServerView* view) const;
+
+  // Returns true if the window is visible. This does not consider visibility
+  // of any ancestors.
+  bool visible() const { return visible_; }
+  void SetVisible(bool value);
+
+  float opacity() const { return opacity_; }
+  void SetOpacity(float value);
+
+  const gfx::Transform& transform() const { return transform_; }
+  void SetTransform(const gfx::Transform& transform);
+
+  const std::map<std::string, std::vector<uint8_t>>& properties() const {
+    return properties_;
+  }
+  void SetProperty(const std::string& name, const std::vector<uint8_t>* value);
+
+  // Returns true if this view is attached to |root| and all ancestors are
+  // visible.
+  bool IsDrawn(const ServerView* root) const;
+
+  void SetSurfaceId(cc::SurfaceId surface_id);
+  const cc::SurfaceId& surface_id() const { return surface_id_; }
+
+#if !defined(NDEBUG)
+  std::string GetDebugWindowHierarchy() const;
+  void BuildDebugInfo(const std::string& depth, std::string* result) const;
+#endif
+
+ private:
+  typedef std::vector<ServerView*> Views;
+
+  // Implementation of removing a view. Doesn't send any notification.
+  void RemoveImpl(ServerView* view);
+
+  ServerViewDelegate* delegate_;
+  const ViewId id_;
+  ServerView* parent_;
+  Views children_;
+  bool visible_;
+  gfx::Rect bounds_;
+  cc::SurfaceId surface_id_;
+  float opacity_;
+  gfx::Transform transform_;
+
+  std::map<std::string, std::vector<uint8_t>> properties_;
+
+  DISALLOW_COPY_AND_ASSIGN(ServerView);
+};
+
+}  // namespace view_manager
+
+#endif  // SERVICES_VIEW_MANAGER_SERVER_VIEW_H_