mus: Let clients set the cursor of their window.

components/mus/ws/connection_manager.cc

 // 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.
 
 #include "components/mus/ws/connection_manager.h"
 
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "components/mus/ws/client_connection.h"
 #include "components/mus/ws/connection_manager_delegate.h"
@@ skipping 320 matching lines @@
   }
 }
 
 void ConnectionManager::ProcessWindowDeleted(const WindowId& window) {
   for (auto& pair : connection_map_) {
     pair.second->service()->ProcessWindowDeleted(window,
                                                  IsOperationSource(pair.first));
   }
 }
 
+void ConnectionManager::ProcessWillChangeWindowPredefinedCursor(
+    ServerWindow* window,
+    int32_t cursor_id) {
+  for (auto& pair : connection_map_) {
+    pair.second->service()->ProcessCursorChanged(window, cursor_id,
+                                                 IsOperationSource(pair.first));
+  }
+
+  // Pass the cursor change to the native window.
+  WindowTreeHostImpl* host = GetWindowTreeHostByWindow(window);
+  if (host)
+    host->OnCursorUpdated(window);
+}
+
 void ConnectionManager::ProcessViewportMetricsChanged(
     const mojom::ViewportMetrics& old_metrics,
     const mojom::ViewportMetrics& new_metrics) {
   for (auto& pair : connection_map_) {
     pair.second->service()->ProcessViewportMetricsChanged(
         old_metrics, new_metrics, IsOperationSource(pair.first));
   }
 }
 
 void ConnectionManager::PrepareForOperation(Operation* op) {
@@ skipping 110 matching lines @@
        (!window->visible() && window->parent()->IsDrawn()))) {
     SchedulePaint(window->parent(), window->bounds());
   }
 
   for (auto& pair : connection_map_) {
     pair.second->service()->ProcessWillChangeWindowVisibility(
         window, IsOperationSource(pair.first));
   }
 }
 
+void ConnectionManager::OnWindowPredefinedCursorChanged(ServerWindow* window,
+                                                        int32_t cursor_id) {
+  if (in_destructor_)
+    return;
+
+  ProcessWillChangeWindowPredefinedCursor(window, cursor_id);
+}
+
 void ConnectionManager::OnWindowSharedPropertyChanged(
     ServerWindow* window,
     const std::string& name,
     const std::vector<uint8_t>* new_data) {
   for (auto& pair : connection_map_) {
     pair.second->service()->ProcessWindowPropertyChanged(
         window, name, new_data, IsOperationSource(pair.first));
   }
 }
 
@@ skipping 20 matching lines @@
     return;
   for (auto& pair : connection_map_) {
     pair.second->service()->ProcessTransientWindowRemoved(
         window, transient_child, IsOperationSource(pair.first));
   }
 }
 
 }  // namespace ws
 
 }  // namespace mus