Mandoline: Rename components/view_manager to components/mus

components/view_manager/server_view_drawn_tracker.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 "components/view_manager/server_view_drawn_tracker.h"
-
-#include "components/view_manager/server_view.h"
-#include "components/view_manager/server_view_drawn_tracker_observer.h"
-
-namespace view_manager {
-
-ServerViewDrawnTracker::ServerViewDrawnTracker(
-    ServerView* view,
-    ServerViewDrawnTrackerObserver* observer)
-    : view_(view), observer_(observer), drawn_(view->IsDrawn()) {
-  AddObservers();
-}
-
-ServerViewDrawnTracker::~ServerViewDrawnTracker() {
-  RemoveObservers();
-}
-
-void ServerViewDrawnTracker::SetDrawn(ServerView* ancestor, bool drawn) {
-  if (drawn == drawn_)
-    return;
-
-  drawn_ = drawn;
-  observer_->OnDrawnStateChanged(ancestor, view_, drawn);
-}
-
-void ServerViewDrawnTracker::AddObservers() {
-  if (!view_)
-    return;
-
-  for (ServerView* v = view_; v; v = v->parent()) {
-    v->AddObserver(this);
-    views_.insert(v);
-  }
-}
-
-void ServerViewDrawnTracker::RemoveObservers() {
-  for (ServerView* view : views_)
-    view->RemoveObserver(this);
-
-  views_.clear();
-}
-
-void ServerViewDrawnTracker::OnViewDestroyed(ServerView* view) {
-  // As views are removed before being destroyed, resulting in
-  // OnViewHierarchyChanged() and us removing ourself as an observer, the only
-  // view we should ever get notified of destruction on is |view_|.
-  DCHECK_EQ(view, view_);
-  RemoveObservers();
-  view_ = nullptr;
-  SetDrawn(nullptr, false);
-}
-
-void ServerViewDrawnTracker::OnViewHierarchyChanged(ServerView* view,
-                                                    ServerView* new_parent,
-                                                    ServerView* old_parent) {
-  RemoveObservers();
-  AddObservers();
-  const bool is_drawn = view_->IsDrawn();
-  SetDrawn(is_drawn ? nullptr : old_parent, is_drawn);
-}
-
-void ServerViewDrawnTracker::OnViewVisibilityChanged(ServerView* view) {
-  const bool is_drawn = view_->IsDrawn();
-  SetDrawn(is_drawn ? nullptr : view->parent(), is_drawn);
-}
-
-}  // namespace view_manager