DevTools: Protocol handler generator for content

content/browser/devtools/input_domain_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/input_domain_handler.h"
+
+#include "base/strings/stringprintf.h"
+#include "content/browser/devtools/devtools_protocol_constants.h"
+#include "content/browser/renderer_host/render_view_host_impl.h"
+#include "third_party/WebKit/public/web/WebInputEvent.h"
+
+namespace content {
+namespace devtools {
+
+typedef DevToolsProtocolFrontend::Response Response;
+typedef DevToolsProtocolFrontend::ResponseStatus ResponseStatus;
+
+InputDomainHandler::InputDomainHandler()
+  : host_(NULL) {
+}
+
+InputDomainHandler::~InputDomainHandler() {
+}
+
+void InputDomainHandler::OnClientDetached() {
+}
+
+void InputDomainHandler::SetRenderViewHost(RenderViewHostImpl* host) {
+  host_ = host;
+}
+
+Response InputDomainHandler::EmulateTouchFromMouseEvent(std::string in_type,
+                                                        int in_x,
+                                                        int in_y,
+                                                        double* in_deltaX,
+                                                        double* in_deltaY,
+                                                        int* in_modifiers,
+                                                        double* in_timestamp,
+                                                        std::string* in_button,
+                                                        int* in_clickCount) {
+  blink::WebMouseWheelEvent wheel_event;
+  blink::WebMouseEvent mouse_event;
+  blink::WebMouseEvent* event = &mouse_event;
+
+  if (in_type ==
+      devtools::Input::emulateTouchFromMouseEvent::Type::kEnumMousePressed) {
+    event->type = blink::WebInputEvent::MouseDown;
+  } else if (in_type ==
+      devtools::Input::emulateTouchFromMouseEvent::Type::kEnumMouseReleased) {
+    event->type = blink::WebInputEvent::MouseUp;
+  } else if (in_type ==
+      devtools::Input::emulateTouchFromMouseEvent::Type::kEnumMouseMoved) {
+    event->type = blink::WebInputEvent::MouseMove;
+  } else if (in_type ==
+      devtools::Input::emulateTouchFromMouseEvent::Type::kEnumMouseWheel) {
+    if (!in_deltaX || !in_deltaY) {
+      return Response(
+          ResponseStatus::RESPONSE_STATUS_INVALID_PARAMS,
+          "'deltaX' and 'deltaY' are expected for mouseWheel event");
+    }
+    wheel_event.deltaX = static_cast<float>(*in_deltaX);
+    wheel_event.deltaY = static_cast<float>(*in_deltaY);
+    event = &wheel_event;
+    event->type = blink::WebInputEvent::MouseWheel;
+  } else {
+    return Response(
+        ResponseStatus::RESPONSE_STATUS_INVALID_PARAMS,

[dgozman, 2014/09/09 14:30:59]

Can this be just RESPONSE_STATUS_XXXX?

[vkuzkokov, 2014/09/10 10:33:12]

Used Response::InvalidParams instead

+        base::StringPrintf("Unexpected event type '%s'", in_type.c_str()));
+  }
+
+  if (in_modifiers) {
+    if (*in_modifiers & 1)
+      event->modifiers |= blink::WebInputEvent::AltKey;
+    if (*in_modifiers & 2)
+      event->modifiers |= blink::WebInputEvent::ControlKey;
+    if (*in_modifiers & 4)
+      event->modifiers |= blink::WebInputEvent::MetaKey;
+    if (*in_modifiers & 8)
+      event->modifiers |= blink::WebInputEvent::ShiftKey;
+  }
+
+  if (in_timestamp)
+    event->timeStampSeconds = *in_timestamp;
+
+  event->x = in_x;
+  event->y = in_y;
+  event->windowX = in_x;
+  event->windowY = in_y;
+  event->globalX = in_x;
+  event->globalY = in_y;
+
+  if (in_clickCount)
+    event->clickCount = *in_clickCount;
+
+  if (!in_button) {
+    // TODO(vkuzkokov): make not optional
+    return Response(ResponseStatus::RESPONSE_STATUS_INVALID_PARAMS,
+                    "'button' parameter missing");
+  }
+
+  if (*in_button == "none") {
+    event->button = blink::WebMouseEvent::ButtonNone;
+  } else if (*in_button == "left") {
+    event->button = blink::WebMouseEvent::ButtonLeft;
+    event->modifiers |= blink::WebInputEvent::LeftButtonDown;
+  } else if (*in_button == "middle") {
+    event->button = blink::WebMouseEvent::ButtonMiddle;
+    event->modifiers |= blink::WebInputEvent::MiddleButtonDown;
+  } else if (*in_button == "right") {
+    event->button = blink::WebMouseEvent::ButtonRight;
+    event->modifiers |= blink::WebInputEvent::RightButtonDown;
+  } else {
+    return Response(
+        ResponseStatus::RESPONSE_STATUS_INVALID_PARAMS,
+        base::StringPrintf("Unexpected mouse button '%s'", in_button->c_str()));
+  }
+
+  if (!host_) {
+    return Response(ResponseStatus::RESPONSE_STATUS_SERVER_ERROR,
+                    "Could not connect to view");
+  }
+
+  if (event->type == blink::WebInputEvent::MouseWheel)
+    host_->ForwardWheelEvent(wheel_event);
+  else
+    host_->ForwardMouseEvent(mouse_event);
+  return Response(ResponseStatus::RESPONSE_STATUS_OK, "");
+}
+
+}  // namespace devtools
+}  // namespace content