DevTools: Protocol handler generator for content

content/browser/devtools/protocol/page_handler.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 "content/browser/devtools/protocol/page_handler.h"
+
+#include "base/base64.h"
+#include "content/browser/renderer_host/render_view_host_impl.h"
+
+namespace content {
+namespace devtools {
+namespace page {
+
+typedef DevToolsProtocolFrontend::Response Response;
+
+PageHandler::PageHandler()
+    : weak_factory_(this) {
+}
+
+PageHandler::~PageHandler() {
+}
+
+void PageHandler::OnClientDetached() {
+}
+
+void PageHandler::SetRenderViewHost(RenderViewHostImpl* host) {
+  host_ = host;
+}
+
+void PageHandler::SetFrontend(scoped_ptr<Frontend> frontend) {
+  frontend_.swap(frontend);
+}
+
+Response PageHandler::Enable() {
+  return Response::FallThrough();
+}
+
+Response PageHandler::Disable() {
+  return Response::FallThrough();
+}
+
+Response PageHandler::Reload(const bool* ignoreCache,
+                             const std::string* script_to_evaluate_on_load,
+                             const std::string* script_preprocessor) {
+  return Response::FallThrough();
+}
+
+Response PageHandler::Navigate(const std::string& url,
+                           FrameId* frame_id) {
+  return Response::FallThrough();
+}
+
+Response PageHandler::GetNavigationHistory(
+    int* current_index,
+    std::vector<NavigationEntry>* entries) {
+  return Response::FallThrough();
+}
+
+Response PageHandler::NavigateToHistoryEntry(int entry_id) {
+  return Response::FallThrough();
+}
+
+Response PageHandler::SetTouchEmulationEnabled(bool enabled) {
+  return Response::FallThrough();
+}
+
+scoped_refptr<DevToolsProtocol::Response> PageHandler::CaptureScreenshot(
+    scoped_refptr<DevToolsProtocol::Command> command) {
+  if (!host_ || !host_->GetView())
+    return command->InternalErrorResponse("Could not connect to view");
+
+  host_->GetSnapshotFromBrowser(
+      base::Bind(&PageHandler::ScreenshotCaptured,
+          weak_factory_.GetWeakPtr(), command));
+  return command->AsyncResponsePromise();
+}
+
+Response PageHandler::CanScreencast(bool* result) {
+  return Response::FallThrough();
+}
+
+Response PageHandler::CanEmulate(bool* result) {
+  return Response::FallThrough();
+}
+
+Response PageHandler::StartScreencast(const std::string* format,
+                                      const int* quality,
+                                      const int* max_width,
+                                      const int* max_height) {
+  return Response::FallThrough();
+}
+
+Response PageHandler::StopScreencast() {
+  return Response::FallThrough();
+}
+
+Response PageHandler::HandleJavaScriptDialog(bool accept,
+                                             const std::string* prompt_text) {
+  return Response::FallThrough();
+}
+
+scoped_refptr<DevToolsProtocol::Response> PageHandler::QueryUsageAndQuota(
+    const std::string& security_origin,
+    scoped_refptr<DevToolsProtocol::Command> command) {
+  return NULL;
+}
+
+Response PageHandler::SetColorPickerEnabled(bool enabled) {
+  return Response::FallThrough();
+}
+
+void PageHandler::ScreenshotCaptured(
+    scoped_refptr<DevToolsProtocol::Command> command,
+    const unsigned char* png_data,
+    size_t png_size) {
+  if (!png_data || !png_size) {
+    frontend_->SendInternalErrorResponse(command,
+                                         "Unable to capture screenshot");
+    return;
+  }
+
+  std::string base_64_data;
+  base::Base64Encode(
+      base::StringPiece(reinterpret_cast<const char*>(png_data), png_size),
+      &base_64_data);
+
+  CaptureScreenshotResponse response;
+  response.set_data(base_64_data);
+  frontend_->SendCaptureScreenshotResponse(command, response);
+}
+
+
+}  // namespace page
+}  // namespace devtools
+}  // namespace content