Surface button for loading stale cache copy on net error page.

chrome/renderer/net/net_error_page_controller.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 "chrome/renderer/net/net_error_page_controller.h"
+
+#include "base/strings/string_piece.h"
+#include "chrome/renderer/net/net_error_helper.h"
+#include "content/public/renderer/render_frame.h"
+#include "gin/handle.h"
+#include "gin/object_template_builder.h"
+#include "third_party/WebKit/public/web/WebFrame.h"
+#include "third_party/WebKit/public/web/WebKit.h"
+
+gin::WrapperInfo NetErrorPageController::kWrapperInfo = {
+    gin::kEmbedderNativeGin};
+
+// static
+void NetErrorPageController::Install(content::RenderFrame* render_frame) {
+  v8::Isolate* isolate = blink::mainThreadIsolate();
+  v8::HandleScope handle_scope(isolate);
+  v8::Handle<v8::Context> context =
+      render_frame->GetWebFrame()->mainWorldScriptContext();
+  if (context.IsEmpty())
+    return;
+
+  v8::Context::Scope context_scope(context);
+
+  gin::Handle<NetErrorPageController> controller = gin::CreateHandle(
+      isolate, new NetErrorPageController(render_frame));
+  v8::Handle<v8::Object> global = context->Global();
+  global->Set(gin::StringToV8(isolate, "helperFunctions"), controller.ToV8());
+}
+
+bool NetErrorPageController::LoadStaleButtonClick() {
+  if (!render_frame())
+    return false;
+
+  NetErrorHelper* net_error_helper =
+      content::RenderFrameObserverTracker<NetErrorHelper>::Get(render_frame());
+  DCHECK(net_error_helper);
+  net_error_helper->LoadStaleButtonPressed();
+
+  return true;
+}
+
+bool NetErrorPageController::ReloadButtonClick() {
+  if (!render_frame())
+    return false;
+
+  NetErrorHelper* net_error_helper =
+      content::RenderFrameObserverTracker<NetErrorHelper>::Get(render_frame());
+  DCHECK(net_error_helper);
+  net_error_helper->ReloadButtonPressed();
+
+  return true;
+}
+
+bool NetErrorPageController::MoreButtonClick() {
+  if (!render_frame())
+    return false;
+
+  NetErrorHelper* net_error_helper =
+      content::RenderFrameObserverTracker<NetErrorHelper>::Get(render_frame());
+  DCHECK(net_error_helper);
+  net_error_helper->MoreButtonPressed();
+
+  return true;
+}
+
+NetErrorPageController::NetErrorPageController(
+    content::RenderFrame* render_frame) : RenderFrameObserver(render_frame) {}
+
+NetErrorPageController::~NetErrorPageController() {}
+
+gin::ObjectTemplateBuilder NetErrorPageController::GetObjectTemplateBuilder(
+    v8::Isolate* isolate) {
+  return gin::Wrappable<NetErrorPageController>::GetObjectTemplateBuilder(
+             isolate)
+      .SetMethod("loadStaleButtonClick",
+                 &NetErrorPageController::LoadStaleButtonClick)
+      .SetMethod("reloadButtonClick",
+                 &NetErrorPageController::ReloadButtonClick)
+      .SetMethod("moreButtonClick",
+                 &NetErrorPageController::MoreButtonClick);
+}
+
+void NetErrorPageController::OnDestruct() {}