Timeline: show white overlay till page being reloaded paints

third_party/WebKit/Source/web/WebDevToolsAgentImpl.cpp

 /*
  * Copyright (C) 2010-2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 305 matching lines @@
     , m_instrumentingAgents(m_webLocalFrameImpl->frame()->instrumentingAgents())
     , m_resourceContentLoader(InspectorResourceContentLoader::create(m_webLocalFrameImpl->frame()))
     , m_overlay(overlay)
     , m_inspectedFrames(InspectedFrames::create(m_webLocalFrameImpl->frame()))
     , m_resourceContainer(new InspectorResourceContainer(m_inspectedFrames))
     , m_domAgent(nullptr)
     , m_pageAgent(nullptr)
     , m_networkAgent(nullptr)
     , m_layerTreeAgent(nullptr)
     , m_tracingAgent(nullptr)
+    , m_layerTreeId(0)
     , m_includeViewAgents(includeViewAgents)
-    , m_layerTreeId(0)
+    , m_tracingActive(false)
 {
     DCHECK(isMainThread());
     DCHECK(m_webLocalFrameImpl->frame());
 }
 
 WebDevToolsAgentImpl::~WebDevToolsAgentImpl()
 {
     DCHECK(!m_client);
 }
 
@@ skipping 176 matching lines @@
     if (m_layerTreeAgent)
         m_layerTreeAgent->willAddPageOverlay(layer);
 }
 
 void WebDevToolsAgentImpl::didRemovePageOverlay(const GraphicsLayer* layer)
 {
     if (m_layerTreeAgent)
         m_layerTreeAgent->didRemovePageOverlay(layer);
 }
 
+void WebDevToolsAgentImpl::rootLayerCleared()
+{
+    if (m_overlay)
+        m_overlay->maybeClearReloadingBlanket();
+}
+
 void WebDevToolsAgentImpl::layerTreeViewChanged(WebLayerTreeView* layerTreeView)
 {
     m_layerTreeId = layerTreeView ? layerTreeView->layerTreeId() : 0;
     if (m_tracingAgent)
         m_tracingAgent->setLayerTreeId(m_layerTreeId);
 }
 
 void WebDevToolsAgentImpl::enableTracing(const String& categoryFilter)
 {
     if (m_client)
         m_client->enableTracing(categoryFilter);
+    m_tracingActive = true;
 }
 
 void WebDevToolsAgentImpl::disableTracing()
 {
     if (m_client)
         m_client->disableTracing();
+    m_tracingActive = false;
+}
+
+void WebDevToolsAgentImpl::willReloadPage()
+{
+    if (m_overlay && m_tracingActive)
+        m_overlay->showReloadingBlanket();
 }
 
 void WebDevToolsAgentImpl::setCPUThrottlingRate(double rate)
 {
     if (m_client)
         m_client->setCPUThrottlingRate(rate);
 }
 
 void WebDevToolsAgentImpl::dispatchOnInspectorBackend(int sessionId, int callId, const WebString& method, const WebString& message)
 {
@@ skipping 118 matching lines @@
 bool WebDevToolsAgent::shouldInterruptForMethod(const WebString& method)
 {
     return method == "Debugger.pause"
         || method == "Debugger.setBreakpoint"
         || method == "Debugger.setBreakpointByUrl"
         || method == "Debugger.removeBreakpoint"
         || method == "Debugger.setBreakpointsActive";
 }
 
 } // namespace blink