Import TestRunner library into chromium.

content/test/layout_tests/runner/EventSender.cpp

+// Copyright 2013 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.
+
+/*
+ * Copyright (C) 2010 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
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// This file contains the definition for EventSender.
+//
+// Some notes about drag and drop handling:
+// Windows drag and drop goes through a system call to doDragDrop. At that
+// point, program control is given to Windows which then periodically makes
+// callbacks into the webview. This won't work for layout tests, so instead,
+// we queue up all the mouse move and mouse up events. When the test tries to
+// start a drag (by calling EvenSendingController::doDragDrop), we take the
+// events in the queue and replay them.
+// The behavior of queuing events and replaying them can be disabled by a
+// layout test by setting eventSender.dragMode to false.
+
+#include "content/test/layout_tests/runner/EventSender.h"
+
+#include <deque>
+
+#include "content/public/test/layout_tests/WebTestDelegate.h"
+#include "content/public/test/layout_tests/WebTestProxy.h"
+#include "content/test/layout_tests/runner/KeyCodeMapping.h"
+#include "content/test/layout_tests/runner/MockSpellCheck.h"
+#include "content/test/layout_tests/runner/TestCommon.h"
+#include "content/test/layout_tests/runner/TestInterfaces.h"
+#include "third_party/WebKit/public/platform/WebDragData.h"
+#include "third_party/WebKit/public/platform/WebString.h"
+#include "third_party/WebKit/public/platform/WebVector.h"
+#include "third_party/WebKit/public/web/WebContextMenuData.h"
+#include "third_party/WebKit/public/web/WebTouchPoint.h"
+#include "third_party/WebKit/public/web/WebView.h"
+
+#ifdef WIN32
+#include "third_party/WebKit/public/web/win/WebInputEventFactory.h"
+#elif __APPLE__
+#include "third_party/WebKit/public/web/mac/WebInputEventFactory.h"
+#elif defined(ANDROID)
+#include "third_party/WebKit/public/web/android/WebInputEventFactory.h"
+#elif defined(TOOLKIT_GTK)
+#include "third_party/WebKit/public/web/gtk/WebInputEventFactory.h"
+#endif
+
+// FIXME: layout before each event?
+
+using namespace std;
+using namespace blink;
+
+namespace WebTestRunner {
+
+WebPoint EventSender::lastMousePos;
+WebMouseEvent::Button EventSender::pressedButton = WebMouseEvent::ButtonNone;
+WebMouseEvent::Button EventSender::lastButtonType = WebMouseEvent::ButtonNone;
+
+namespace {
+
+struct SavedEvent {
+    enum SavedEventType {
+        Unspecified,
+        MouseUp,
+        MouseMove,
+        LeapForward
+    };
+
+    SavedEventType type;
+    WebMouseEvent::Button buttonType; // For MouseUp.
+    WebPoint pos; // For MouseMove.
+    int milliseconds; // For LeapForward.
+
+    SavedEvent()
+        : type(Unspecified)
+        , buttonType(WebMouseEvent::ButtonNone)
+        , milliseconds(0) { }
+};
+
+WebDragData currentDragData;
+WebDragOperation currentDragEffect;
+WebDragOperationsMask currentDragEffectsAllowed;
+bool replayingSavedEvents = false;
+deque<SavedEvent> mouseEventQueue;
+int touchModifiers;
+vector<WebTouchPoint> touchPoints;
+
+// Time and place of the last mouse up event.
+double lastClickTimeSec = 0;
+WebPoint lastClickPos;
+int clickCount = 0;
+
+// maximum distance (in space and time) for a mouse click
+// to register as a double or triple click
+const double multipleClickTimeSec = 1;
+const int multipleClickRadiusPixels = 5;
+
+// How much we should scroll per event - the value here is chosen to
+// match the WebKit impl and layout test results.
+const float scrollbarPixelsPerTick = 40.0f;
+
+inline bool outsideMultiClickRadius(const WebPoint& a, const WebPoint& b)
+{
+    return ((a.x - b.x) * (a.x - b.x) + (a.y - b.y) * (a.y - b.y)) >
+        multipleClickRadiusPixels * multipleClickRadiusPixels;
+}
+
+// Used to offset the time the event hander things an event happened. This is
+// done so tests can run without a delay, but bypass checks that are time
+// dependent (e.g., dragging has a timeout vs selection).
+uint32 timeOffsetMs = 0;
+
+double getCurrentEventTimeSec(WebTestDelegate* delegate)
+{
+    return (delegate->getCurrentTimeInMillisecond() + timeOffsetMs) / 1000.0;
+}
+
+void advanceEventTime(int32_t deltaMs)
+{
+    timeOffsetMs += deltaMs;
+}
+
+void initMouseEvent(WebInputEvent::Type t, WebMouseEvent::Button b, const WebPoint& pos, WebMouseEvent* e, double ts)
+{
+    e->type = t;
+    e->button = b;
+    e->modifiers = 0;
+    e->x = pos.x;
+    e->y = pos.y;
+    e->globalX = pos.x;
+    e->globalY = pos.y;
+    e->timeStampSeconds = ts;
+    e->clickCount = clickCount;
+}
+
+void applyKeyModifier(const string& modifierName, WebInputEvent* event)
+{
+    const char* characters = modifierName.c_str();
+    if (!strcmp(characters, "ctrlKey")
+#ifndef __APPLE__
+        || !strcmp(characters, "addSelectionKey")
+#endif
+        ) {
+        event->modifiers |= WebInputEvent::ControlKey;
+    } else if (!strcmp(characters, "shiftKey") || !strcmp(characters, "rangeSelectionKey"))
+        event->modifiers |= WebInputEvent::ShiftKey;
+    else if (!strcmp(characters, "altKey")) {
+        event->modifiers |= WebInputEvent::AltKey;
+#ifdef __APPLE__
+    } else if (!strcmp(characters, "metaKey") || !strcmp(characters, "addSelectionKey")) {
+        event->modifiers |= WebInputEvent::MetaKey;
+#else
+    } else if (!strcmp(characters, "metaKey")) {
+        event->modifiers |= WebInputEvent::MetaKey;
+#endif
+    } else if (!strcmp(characters, "autoRepeat")) {
+        event->modifiers |= WebInputEvent::IsAutoRepeat;
+    }
+}
+
+void applyKeyModifiers(const CppVariant* argument, WebInputEvent* event)
+{
+    if (argument->isObject()) {
+        vector<string> modifiers = argument->toStringVector();
+        for (vector<string>::const_iterator i = modifiers.begin(); i != modifiers.end(); ++i)
+            applyKeyModifier(*i, event);
+    } else if (argument->isString()) {
+        applyKeyModifier(argument->toString(), event);
+    }
+}
+
+// Get the edit command corresponding to a keyboard event.
+// Returns true if the specified event corresponds to an edit command, the name
+// of the edit command will be stored in |*name|.
+bool getEditCommand(const WebKeyboardEvent& event, string* name)
+{
+#ifdef __APPLE__
+    // We only cares about Left,Right,Up,Down keys with Command or Command+Shift
+    // modifiers. These key events correspond to some special movement and
+    // selection editor commands, and was supposed to be handled in
+    // WebKit/chromium/src/EditorClientImpl.cpp. But these keys will be marked
+    // as system key, which prevents them from being handled. Thus they must be
+    // handled specially.
+    if ((event.modifiers & ~WebKeyboardEvent::ShiftKey) != WebKeyboardEvent::MetaKey)
+        return false;
+
+    switch (event.windowsKeyCode) {
+    case VKEY_LEFT:
+        *name = "MoveToBeginningOfLine";
+        break;
+    case VKEY_RIGHT:
+        *name = "MoveToEndOfLine";
+        break;
+    case VKEY_UP:
+        *name = "MoveToBeginningOfDocument";
+        break;
+    case VKEY_DOWN:
+        *name = "MoveToEndOfDocument";
+        break;
+    default:
+        return false;
+    }
+
+    if (event.modifiers & WebKeyboardEvent::ShiftKey)
+        name->append("AndModifySelection");
+
+    return true;
+#else
+    return false;
+#endif
+}
+
+// Key event location code introduced in DOM Level 3.
+// See also: http://www.w3.org/TR/DOM-Level-3-Events/#events-keyboardevents
+enum KeyLocationCode {
+    DOMKeyLocationStandard      = 0x00,
+    DOMKeyLocationLeft          = 0x01,
+    DOMKeyLocationRight         = 0x02,
+    DOMKeyLocationNumpad        = 0x03
+};
+
+}
+
+EventSender::EventSender(TestInterfaces* interfaces)
+    : m_testInterfaces(interfaces)
+    , m_delegate(0)
+{
+    // Initialize the map that associates methods of this class with the names
+    // they will use when called by JavaScript. The actual binding of those
+    // names to their methods will be done by calling bindToJavaScript() (defined
+    // by CppBoundClass, the parent to EventSender).
+    bindMethod("addTouchPoint", &EventSender::addTouchPoint);
+    bindMethod("beginDragWithFiles", &EventSender::beginDragWithFiles);
+    bindMethod("cancelTouchPoint", &EventSender::cancelTouchPoint);
+    bindMethod("clearKillRing", &EventSender::clearKillRing);
+    bindMethod("clearTouchPoints", &EventSender::clearTouchPoints);
+    bindMethod("contextClick", &EventSender::contextClick);
+    bindMethod("continuousMouseScrollBy", &EventSender::continuousMouseScrollBy);
+    bindMethod("dispatchMessage", &EventSender::dispatchMessage);
+    bindMethod("dumpFilenameBeingDragged", &EventSender::dumpFilenameBeingDragged);
+    bindMethod("enableDOMUIEventLogging", &EventSender::enableDOMUIEventLogging);
+    bindMethod("fireKeyboardEventsToElement", &EventSender::fireKeyboardEventsToElement);
+    bindMethod("keyDown", &EventSender::keyDown);
+    bindMethod("leapForward", &EventSender::leapForward);
+    bindMethod("mouseDown", &EventSender::mouseDown);
+    bindMethod("mouseMoveTo", &EventSender::mouseMoveTo);
+    bindMethod("mouseScrollBy", &EventSender::mouseScrollBy);
+    bindMethod("mouseUp", &EventSender::mouseUp);
+    bindMethod("mouseDragBegin", &EventSender::mouseDragBegin);
+    bindMethod("mouseDragEnd", &EventSender::mouseDragEnd);
+    bindMethod("mouseMomentumBegin", &EventSender::mouseMomentumBegin);
+    bindMethod("mouseMomentumScrollBy", &EventSender::mouseMomentumScrollBy);
+    bindMethod("mouseMomentumEnd", &EventSender::mouseMomentumEnd);
+    bindMethod("releaseTouchPoint", &EventSender::releaseTouchPoint);
+    bindMethod("scheduleAsynchronousClick", &EventSender::scheduleAsynchronousClick);
+    bindMethod("scheduleAsynchronousKeyDown", &EventSender::scheduleAsynchronousKeyDown);
+    bindMethod("setTouchModifier", &EventSender::setTouchModifier);
+    bindMethod("textZoomIn", &EventSender::textZoomIn);
+    bindMethod("textZoomOut", &EventSender::textZoomOut);
+    bindMethod("touchCancel", &EventSender::touchCancel);
+    bindMethod("touchEnd", &EventSender::touchEnd);
+    bindMethod("touchMove", &EventSender::touchMove);
+    bindMethod("touchStart", &EventSender::touchStart);
+    bindMethod("updateTouchPoint", &EventSender::updateTouchPoint);
+    bindMethod("gestureFlingCancel", &EventSender::gestureFlingCancel);
+    bindMethod("gestureFlingStart", &EventSender::gestureFlingStart);
+    bindMethod("gestureScrollBegin", &EventSender::gestureScrollBegin);
+    bindMethod("gestureScrollEnd", &EventSender::gestureScrollEnd);
+    bindMethod("gestureScrollFirstPoint", &EventSender::gestureScrollFirstPoint);
+    bindMethod("gestureScrollUpdate", &EventSender::gestureScrollUpdate);
+    bindMethod("gestureScrollUpdateWithoutPropagation", &EventSender::gestureScrollUpdateWithoutPropagation);
+    bindMethod("gestureTap", &EventSender::gestureTap);
+    bindMethod("gestureTapDown", &EventSender::gestureTapDown);
+    bindMethod("gestureShowPress", &EventSender::gestureShowPress);
+    bindMethod("gestureTapCancel", &EventSender::gestureTapCancel);
+    bindMethod("gestureLongPress", &EventSender::gestureLongPress);
+    bindMethod("gestureLongTap", &EventSender::gestureLongTap);
+    bindMethod("gestureTwoFingerTap", &EventSender::gestureTwoFingerTap);
+    bindMethod("zoomPageIn", &EventSender::zoomPageIn);
+    bindMethod("zoomPageOut", &EventSender::zoomPageOut);
+    bindMethod("setPageScaleFactor", &EventSender::setPageScaleFactor);
+
+    bindProperty("forceLayoutOnEvents", &forceLayoutOnEvents);
+
+    // When set to true (the default value), we batch mouse move and mouse up
+    // events so we can simulate drag & drop.
+    bindProperty("dragMode", &dragMode);
+#ifdef WIN32
+    bindProperty("WM_KEYDOWN", &wmKeyDown);
+    bindProperty("WM_KEYUP", &wmKeyUp);
+    bindProperty("WM_CHAR", &wmChar);
+    bindProperty("WM_DEADCHAR", &wmDeadChar);
+    bindProperty("WM_SYSKEYDOWN", &wmSysKeyDown);
+    bindProperty("WM_SYSKEYUP", &wmSysKeyUp);
+    bindProperty("WM_SYSCHAR", &wmSysChar);
+    bindProperty("WM_SYSDEADCHAR", &wmSysDeadChar);
+#endif
+}
+
+EventSender::~EventSender()
+{
+}
+
+void EventSender::setContextMenuData(const WebContextMenuData& contextMenuData)
+{
+    m_lastContextMenuData = WebScopedPtr<WebContextMenuData>(new WebContextMenuData(contextMenuData));
+}
+
+void EventSender::reset()
+{
+    // The test should have finished a drag and the mouse button state.
+    BLINK_ASSERT(currentDragData.isNull());
+    currentDragData.reset();
+    currentDragEffect = blink::WebDragOperationNone;
+    currentDragEffectsAllowed = blink::WebDragOperationNone;
+    if (webview() && pressedButton != WebMouseEvent::ButtonNone)
+        webview()->mouseCaptureLost();
+    pressedButton = WebMouseEvent::ButtonNone;
+    dragMode.set(true);
+    forceLayoutOnEvents.set(true);
+#ifdef WIN32
+    wmKeyDown.set(WM_KEYDOWN);
+    wmKeyUp.set(WM_KEYUP);
+    wmChar.set(WM_CHAR);
+    wmDeadChar.set(WM_DEADCHAR);
+    wmSysKeyDown.set(WM_SYSKEYDOWN);
+    wmSysKeyUp.set(WM_SYSKEYUP);
+    wmSysChar.set(WM_SYSCHAR);
+    wmSysDeadChar.set(WM_SYSDEADCHAR);
+#endif
+    lastMousePos = WebPoint(0, 0);
+    lastClickTimeSec = 0;
+    lastClickPos = WebPoint(0, 0);
+    clickCount = 0;
+    lastButtonType = WebMouseEvent::ButtonNone;
+    timeOffsetMs = 0;
+    touchModifiers = 0;
+    touchPoints.clear();
+    m_taskList.revokeAll();
+    m_currentGestureLocation = WebPoint(0, 0);
+    mouseEventQueue.clear();
+}
+
+void EventSender::doDragDrop(const WebDragData& dragData, WebDragOperationsMask mask)
+{
+    WebMouseEvent event;
+    initMouseEvent(WebInputEvent::MouseDown, pressedButton, lastMousePos, &event, getCurrentEventTimeSec(m_delegate));
+    WebPoint clientPoint(event.x, event.y);
+    WebPoint screenPoint(event.globalX, event.globalY);
+    currentDragData = dragData;
+    currentDragEffectsAllowed = mask;
+    currentDragEffect = webview()->dragTargetDragEnter(dragData, clientPoint, screenPoint, currentDragEffectsAllowed, 0);
+
+    // Finish processing events.
+    replaySavedEvents();
+}
+
+void EventSender::dumpFilenameBeingDragged(const CppArgumentList&, CppVariant*)
+{
+    WebString filename;
+    WebVector<WebDragData::Item> items = currentDragData.items();
+    for (size_t i = 0; i < items.size(); ++i) {
+        if (items[i].storageType == WebDragData::Item::StorageTypeBinaryData) {
+            filename = items[i].title;
+            break;
+        }
+    }
+    m_delegate->printMessage(std::string("Filename being dragged: ") + filename.utf8().data() + "\n");
+}
+
+WebMouseEvent::Button EventSender::getButtonTypeFromButtonNumber(int buttonCode)
+{
+    if (!buttonCode)
+        return WebMouseEvent::ButtonLeft;
+    if (buttonCode == 2)
+        return WebMouseEvent::ButtonRight;
+    return WebMouseEvent::ButtonMiddle;
+}
+
+int EventSender::getButtonNumberFromSingleArg(const CppArgumentList& arguments)
+{
+    int buttonCode = 0;
+    if (arguments.size() > 0 && arguments[0].isNumber())
+        buttonCode = arguments[0].toInt32();
+    return buttonCode;
+}
+
+void EventSender::updateClickCountForButton(WebMouseEvent::Button buttonType)
+{
+    if ((getCurrentEventTimeSec(m_delegate) - lastClickTimeSec < multipleClickTimeSec)
+        && (!outsideMultiClickRadius(lastMousePos, lastClickPos))
+        && (buttonType == lastButtonType))
+        ++clickCount;
+    else {
+        clickCount = 1;
+        lastButtonType = buttonType;
+    }
+}
+
+//
+// Implemented javascript methods.
+//
+
+void EventSender::mouseDown(const CppArgumentList& arguments, CppVariant* result)
+{
+    if (result) // Could be 0 if invoked asynchronously.
+        result->setNull();
+
+    if (shouldForceLayoutOnEvents())
+        webview()->layout();
+
+    int buttonNumber = getButtonNumberFromSingleArg(arguments);
+    BLINK_ASSERT(buttonNumber != -1);
+
+    WebMouseEvent::Button buttonType = getButtonTypeFromButtonNumber(buttonNumber);
+
+    updateClickCountForButton(buttonType);
+
+    WebMouseEvent event;
+    pressedButton = buttonType;
+    initMouseEvent(WebInputEvent::MouseDown, buttonType, lastMousePos, &event, getCurrentEventTimeSec(m_delegate));
+    if (arguments.size() >= 2 && (arguments[1].isObject() || arguments[1].isString()))
+        applyKeyModifiers(&(arguments[1]), &event);
+    webview()->handleInputEvent(event);
+}
+
+void EventSender::mouseUp(const CppArgumentList& arguments, CppVariant* result)
+{
+    if (result) // Could be 0 if invoked asynchronously.
+        result->setNull();
+
+    if (shouldForceLayoutOnEvents())
+        webview()->layout();
+
+    int buttonNumber = getButtonNumberFromSingleArg(arguments);
+    BLINK_ASSERT(buttonNumber != -1);
+
+    WebMouseEvent::Button buttonType = getButtonTypeFromButtonNumber(buttonNumber);
+
+    if (isDragMode() && !replayingSavedEvents) {
+        SavedEvent savedEvent;
+        savedEvent.type = SavedEvent::MouseUp;
+        savedEvent.buttonType = buttonType;
+        mouseEventQueue.push_back(savedEvent);
+        replaySavedEvents();
+    } else {
+        WebMouseEvent event;
+        initMouseEvent(WebInputEvent::MouseUp, buttonType, lastMousePos, &event, getCurrentEventTimeSec(m_delegate));
+        if (arguments.size() >= 2 && (arguments[1].isObject() || arguments[1].isString()))
+            applyKeyModifiers(&(arguments[1]), &event);
+        doMouseUp(event);
+    }
+}
+
+void EventSender::doMouseUp(const WebMouseEvent& e)
+{
+    webview()->handleInputEvent(e);
+
+    pressedButton = WebMouseEvent::ButtonNone;
+    lastClickTimeSec = e.timeStampSeconds;
+    lastClickPos = lastMousePos;
+
+    // If we're in a drag operation, complete it.
+    if (currentDragData.isNull())
+        return;
+
+    WebPoint clientPoint(e.x, e.y);
+    WebPoint screenPoint(e.globalX, e.globalY);
+    finishDragAndDrop(e, webview()->dragTargetDragOver(clientPoint, screenPoint, currentDragEffectsAllowed, 0));
+}
+
+void EventSender::finishDragAndDrop(const WebMouseEvent& e, blink::WebDragOperation dragEffect)
+{
+    WebPoint clientPoint(e.x, e.y);
+    WebPoint screenPoint(e.globalX, e.globalY);
+    currentDragEffect = dragEffect;
+    if (currentDragEffect)
+        webview()->dragTargetDrop(clientPoint, screenPoint, 0);
+    else
+        webview()->dragTargetDragLeave();
+    webview()->dragSourceEndedAt(clientPoint, screenPoint, currentDragEffect);
+    webview()->dragSourceSystemDragEnded();
+
+    currentDragData.reset();
+}
+
+void EventSender::mouseMoveTo(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+
+    if (arguments.size() < 2 || !arguments[0].isNumber() || !arguments[1].isNumber())
+        return;
+    if (shouldForceLayoutOnEvents())
+        webview()->layout();
+
+    WebPoint mousePos(arguments[0].toInt32(), arguments[1].toInt32());
+
+    if (isDragMode() && pressedButton == WebMouseEvent::ButtonLeft && !replayingSavedEvents) {
+        SavedEvent savedEvent;
+        savedEvent.type = SavedEvent::MouseMove;
+        savedEvent.pos = mousePos;
+        mouseEventQueue.push_back(savedEvent);
+    } else {
+        WebMouseEvent event;
+        initMouseEvent(WebInputEvent::MouseMove, pressedButton, mousePos, &event, getCurrentEventTimeSec(m_delegate));
+        if (arguments.size() >= 3 && (arguments[2].isObject() || arguments[2].isString()))
+            applyKeyModifiers(&(arguments[2]), &event);
+        doMouseMove(event);
+    }
+}
+
+void EventSender::doMouseMove(const WebMouseEvent& e)
+{
+    lastMousePos = WebPoint(e.x, e.y);
+
+    webview()->handleInputEvent(e);
+
+    if (pressedButton == WebMouseEvent::ButtonNone || currentDragData.isNull())
+        return;
+    WebPoint clientPoint(e.x, e.y);
+    WebPoint screenPoint(e.globalX, e.globalY);
+    currentDragEffect = webview()->dragTargetDragOver(clientPoint, screenPoint, currentDragEffectsAllowed, 0);
+}
+
+void EventSender::keyDown(const CppArgumentList& arguments, CppVariant* result)
+{
+    if (result)
+        result->setNull();
+    if (arguments.size() < 1 || !arguments[0].isString())
+        return;
+    bool generateChar = false;
+
+    // FIXME: I'm not exactly sure how we should convert the string to a key
+    // event. This seems to work in the cases I tested.
+    // FIXME: Should we also generate a KEY_UP?
+    string codeStr = arguments[0].toString();
+
+    // Convert \n -> VK_RETURN. Some layout tests use \n to mean "Enter", when
+    // Windows uses \r for "Enter".
+    int code = 0;
+    int text = 0;
+    bool needsShiftKeyModifier = false;
+    if ("\n" == codeStr) {
+        generateChar = true;
+        text = code = VKEY_RETURN;
+    } else if ("rightArrow" == codeStr)
+        code = VKEY_RIGHT;
+    else if ("downArrow" == codeStr)
+        code = VKEY_DOWN;
+    else if ("leftArrow" == codeStr)
+        code = VKEY_LEFT;
+    else if ("upArrow" == codeStr)
+        code = VKEY_UP;
+    else if ("insert" == codeStr)
+        code = VKEY_INSERT;
+    else if ("delete" == codeStr)
+        code = VKEY_DELETE;
+    else if ("pageUp" == codeStr)
+        code = VKEY_PRIOR;
+    else if ("pageDown" == codeStr)
+        code = VKEY_NEXT;
+    else if ("home" == codeStr)
+        code = VKEY_HOME;
+    else if ("end" == codeStr)
+        code = VKEY_END;
+    else if ("printScreen" == codeStr)
+        code = VKEY_SNAPSHOT;
+    else if ("menu" == codeStr)
+        code = VKEY_APPS;
+    else if ("leftControl" == codeStr)
+        code = VKEY_LCONTROL;
+    else if ("rightControl" == codeStr)
+        code = VKEY_RCONTROL;
+    else if ("leftShift" == codeStr)
+        code = VKEY_LSHIFT;
+    else if ("rightShift" == codeStr)
+        code = VKEY_RSHIFT;
+    else if ("leftAlt" == codeStr)
+        code = VKEY_LMENU;
+    else if ("rightAlt" == codeStr)
+        code = VKEY_RMENU;
+    else if ("numLock" == codeStr)
+        code = VKEY_NUMLOCK;
+    else {
+        // Compare the input string with the function-key names defined by the
+        // DOM spec (i.e. "F1",...,"F24"). If the input string is a function-key
+        // name, set its key code.
+        for (int i = 1; i <= 24; ++i) {
+            char functionChars[10];
+            snprintf(functionChars, 10, "F%d", i);
+            string functionKeyName(functionChars);
+            if (functionKeyName == codeStr) {
+                code = VKEY_F1 + (i - 1);
+                break;
+            }
+        }
+        if (!code) {
+            WebString webCodeStr = WebString::fromUTF8(codeStr.data(), codeStr.size());
+            BLINK_ASSERT(webCodeStr.length() == 1);
+            text = code = webCodeStr.at(0);
+            needsShiftKeyModifier = needsShiftModifier(code);
+            if ((code & 0xFF) >= 'a' && (code & 0xFF) <= 'z')
+                code -= 'a' - 'A';
+            generateChar = true;
+        }
+
+        if ("(" == codeStr) {
+            code = '9';
+            needsShiftKeyModifier = true;
+        }
+    }
+
+    // For one generated keyboard event, we need to generate a keyDown/keyUp
+    // pair; refer to EventSender.cpp in Tools/DumpRenderTree/win.
+    // On Windows, we might also need to generate a char event to mimic the
+    // Windows event flow; on other platforms we create a merged event and test
+    // the event flow that that platform provides.
+    WebKeyboardEvent eventDown, eventChar, eventUp;
+    eventDown.type = WebInputEvent::RawKeyDown;
+    eventDown.modifiers = 0;
+    eventDown.windowsKeyCode = code;
+#if defined(__linux__) && defined(TOOLKIT_GTK)
+    eventDown.nativeKeyCode = NativeKeyCodeForWindowsKeyCode(code);
+#endif
+
+    if (generateChar) {
+        eventDown.text[0] = text;
+        eventDown.unmodifiedText[0] = text;
+    }
+    eventDown.setKeyIdentifierFromWindowsKeyCode();
+
+    if (arguments.size() >= 2 && (arguments[1].isObject() || arguments[1].isString())) {
+        applyKeyModifiers(&(arguments[1]), &eventDown);
+#if WIN32 || __APPLE__ || defined(ANDROID) || defined(TOOLKIT_GTK)
+        eventDown.isSystemKey = WebInputEventFactory::isSystemKeyEvent(eventDown);
+#endif
+    }
+
+    if (needsShiftKeyModifier)
+        eventDown.modifiers |= WebInputEvent::ShiftKey;
+
+    // See if KeyLocation argument is given.
+    if (arguments.size() >= 3 && arguments[2].isNumber()) {
+        int location = arguments[2].toInt32();
+        if (location == DOMKeyLocationNumpad)
+            eventDown.modifiers |= WebInputEvent::IsKeyPad;
+    }
+
+    eventChar = eventUp = eventDown;
+    eventUp.type = WebInputEvent::KeyUp;
+    // EventSender.m forces a layout here, with at least one
+    // test (fast/forms/focus-control-to-page.html) relying on this.
+    if (shouldForceLayoutOnEvents())
+        webview()->layout();
+
+    // In the browser, if a keyboard event corresponds to an editor command,
+    // the command will be dispatched to the renderer just before dispatching
+    // the keyboard event, and then it will be executed in the
+    // RenderView::handleCurrentKeyboardEvent() method, which is called from
+    // third_party/WebKit/Source/WebKit/chromium/src/EditorClientImpl.cpp.
+    // We just simulate the same behavior here.
+    string editCommand;
+    if (getEditCommand(eventDown, &editCommand))
+        m_delegate->setEditCommand(editCommand, "");
+
+    webview()->handleInputEvent(eventDown);
+
+    if (code == VKEY_ESCAPE && !currentDragData.isNull()) {
+        WebMouseEvent event;
+        initMouseEvent(WebInputEvent::MouseDown, pressedButton, lastMousePos, &event, getCurrentEventTimeSec(m_delegate));
+        finishDragAndDrop(event, blink::WebDragOperationNone);
+    }
+
+    m_delegate->clearEditCommand();
+
+    if (generateChar) {
+        eventChar.type = WebInputEvent::Char;
+        eventChar.keyIdentifier[0] = '\0';
+        webview()->handleInputEvent(eventChar);
+    }
+
+    webview()->handleInputEvent(eventUp);
+}
+
+void EventSender::dispatchMessage(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+
+#ifdef WIN32
+    if (arguments.size() == 3) {
+        // Grab the message id to see if we need to dispatch it.
+        int msg = arguments[0].toInt32();
+
+        // WebKit's version of this function stuffs a MSG struct and uses
+        // TranslateMessage and DispatchMessage. We use a WebKeyboardEvent, which
+        // doesn't need to receive the DeadChar and SysDeadChar messages.
+        if (msg == WM_DEADCHAR || msg == WM_SYSDEADCHAR)
+            return;
+
+        if (shouldForceLayoutOnEvents())
+            webview()->layout();
+
+        unsigned long lparam = static_cast<unsigned long>(arguments[2].toDouble());
+        webview()->handleInputEvent(WebInputEventFactory::keyboardEvent(0, msg, arguments[1].toInt32(), lparam));
+    } else
+        BLINK_ASSERT_NOT_REACHED();
+#endif
+}
+
+bool EventSender::needsShiftModifier(int keyCode)
+{
+    // If code is an uppercase letter, assign a SHIFT key to
+    // eventDown.modifier, this logic comes from
+    // Tools/DumpRenderTree/win/EventSender.cpp
+    return (keyCode & 0xFF) >= 'A' && (keyCode & 0xFF) <= 'Z';
+}
+
+void EventSender::leapForward(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+
+    if (arguments.size() < 1 || !arguments[0].isNumber())
+        return;
+
+    int milliseconds = arguments[0].toInt32();
+    if (isDragMode() && pressedButton == WebMouseEvent::ButtonLeft && !replayingSavedEvents) {
+        SavedEvent savedEvent;
+        savedEvent.type = SavedEvent::LeapForward;
+        savedEvent.milliseconds = milliseconds;
+        mouseEventQueue.push_back(savedEvent);
+    } else
+        doLeapForward(milliseconds);
+}
+
+void EventSender::doLeapForward(int milliseconds)
+{
+    advanceEventTime(milliseconds);
+}
+
+// Apple's port of WebKit zooms by a factor of 1.2 (see
+// WebKit/WebView/WebView.mm)
+void EventSender::textZoomIn(const CppArgumentList&, CppVariant* result)
+{
+    webview()->setTextZoomFactor(webview()->textZoomFactor() * 1.2f);
+    result->setNull();
+}
+
+void EventSender::textZoomOut(const CppArgumentList&, CppVariant* result)
+{
+    webview()->setTextZoomFactor(webview()->textZoomFactor() / 1.2f);
+    result->setNull();
+}
+
+void EventSender::zoomPageIn(const CppArgumentList&, CppVariant* result)
+{
+    const vector<WebTestProxyBase*>& windowList = m_testInterfaces->windowList();
+
+    for (size_t i = 0; i < windowList.size(); ++i)
+        windowList.at(i)->webView()->setZoomLevel(windowList.at(i)->webView()->zoomLevel() + 1);
+    result->setNull();
+}
+
+void EventSender::zoomPageOut(const CppArgumentList&, CppVariant* result)
+{
+    const vector<WebTestProxyBase*>& windowList = m_testInterfaces->windowList();
+
+    for (size_t i = 0; i < windowList.size(); ++i)
+        windowList.at(i)->webView()->setZoomLevel(windowList.at(i)->webView()->zoomLevel() - 1);
+    result->setNull();
+}
+
+void EventSender::setPageScaleFactor(const CppArgumentList& arguments, CppVariant* result)
+{
+    if (arguments.size() < 3 || !arguments[0].isNumber() || !arguments[1].isNumber() || !arguments[2].isNumber())
+        return;
+
+    float scaleFactor = static_cast<float>(arguments[0].toDouble());
+    int x = arguments[1].toInt32();
+    int y = arguments[2].toInt32();
+    webview()->setPageScaleFactorLimits(scaleFactor, scaleFactor);
+    webview()->setPageScaleFactor(scaleFactor, WebPoint(x, y));
+    result->setNull();
+}
+
+void EventSender::mouseScrollBy(const CppArgumentList& arguments, CppVariant* result)
+{
+    WebMouseWheelEvent event;
+    initMouseWheelEvent(arguments, result, false, &event);
+    webview()->handleInputEvent(event);
+}
+
+void EventSender::continuousMouseScrollBy(const CppArgumentList& arguments, CppVariant* result)
+{
+    WebMouseWheelEvent event;
+    initMouseWheelEvent(arguments, result, true, &event);
+    webview()->handleInputEvent(event);
+}
+
+void EventSender::replaySavedEvents()
+{
+    replayingSavedEvents = true;
+    while (!mouseEventQueue.empty()) {
+        SavedEvent e = mouseEventQueue.front();
+        mouseEventQueue.pop_front();
+
+        switch (e.type) {
+        case SavedEvent::MouseMove: {
+            WebMouseEvent event;
+            initMouseEvent(WebInputEvent::MouseMove, pressedButton, e.pos, &event, getCurrentEventTimeSec(m_delegate));
+            doMouseMove(event);
+            break;
+        }
+        case SavedEvent::LeapForward:
+            doLeapForward(e.milliseconds);
+            break;
+        case SavedEvent::MouseUp: {
+            WebMouseEvent event;
+            initMouseEvent(WebInputEvent::MouseUp, e.buttonType, lastMousePos, &event, getCurrentEventTimeSec(m_delegate));
+            doMouseUp(event);
+            break;
+        }
+        default:
+            BLINK_ASSERT_NOT_REACHED();
+        }
+    }
+
+    replayingSavedEvents = false;
+}
+
+// Because actual context menu is implemented by the browser side,
+// this function does only what LayoutTests are expecting:
+// - Many test checks the count of items. So returning non-zero value makes sense.
+// - Some test compares the count before and after some action. So changing the count based on flags
+//   also makes sense. This function is doing such for some flags.
+// - Some test even checks actual string content. So providing it would be also helpful.
+//
+static vector<WebString> makeMenuItemStringsFor(WebContextMenuData* contextMenu, WebTestDelegate* delegate)
+{
+    // These constants are based on Safari's context menu because tests are made for it.
+    static const char* nonEditableMenuStrings[] = { "Back", "Reload Page", "Open in Dashbaord", "<separator>", "View Source", "Save Page As", "Print Page", "Inspect Element", 0 };
+    static const char* editableMenuStrings[] = { "Cut", "Copy", "<separator>", "Paste", "Spelling and Grammar", "Substitutions, Transformations", "Font", "Speech", "Paragraph Direction", "<separator>", 0 };
+
+    // This is possible because mouse events are cancelleable.
+    if (!contextMenu)
+        return vector<WebString>();
+
+    vector<WebString> strings;
+
+    if (contextMenu->isEditable) {
+        for (const char** item = editableMenuStrings; *item; ++item)
+            strings.push_back(WebString::fromUTF8(*item));
+        WebVector<WebString> suggestions;
+        MockSpellCheck::fillSuggestionList(contextMenu->misspelledWord, &suggestions);
+        for (size_t i = 0; i < suggestions.size(); ++i)
+            strings.push_back(suggestions[i]);
+    } else {
+        for (const char** item = nonEditableMenuStrings; *item; ++item)
+            strings.push_back(WebString::fromUTF8(*item));
+    }
+
+    return strings;
+}
+
+void EventSender::contextClick(const CppArgumentList& arguments, CppVariant* result)
+{
+    if (shouldForceLayoutOnEvents())
+        webview()->layout();
+
+    updateClickCountForButton(WebMouseEvent::ButtonRight);
+
+    // Clears last context menu data because we need to know if the context menu be requested
+    // after following mouse events.
+    m_lastContextMenuData.reset();
+
+    // Generate right mouse down and up.
+    WebMouseEvent event;
+    // This is a hack to work around only allowing a single pressed button since we want to
+    // test the case where both the left and right mouse buttons are pressed.
+    if (pressedButton == WebMouseEvent::ButtonNone)
+        pressedButton = WebMouseEvent::ButtonRight;
+    initMouseEvent(WebInputEvent::MouseDown, WebMouseEvent::ButtonRight, lastMousePos, &event, getCurrentEventTimeSec(m_delegate));
+    webview()->handleInputEvent(event);
+
+#ifdef WIN32
+    initMouseEvent(WebInputEvent::MouseUp, WebMouseEvent::ButtonRight, lastMousePos, &event, getCurrentEventTimeSec(m_delegate));
+    webview()->handleInputEvent(event);
+
+    pressedButton = WebMouseEvent::ButtonNone;
+#endif
+
+    NPObject* resultArray = WebBindings::makeStringArray(makeMenuItemStringsFor(m_lastContextMenuData.get(), m_delegate));
+    result->set(resultArray);
+    WebBindings::releaseObject(resultArray);
+
+    m_lastContextMenuData.reset();
+}
+
+class MouseDownTask: public WebMethodTask<EventSender> {
+public:
+    MouseDownTask(EventSender* obj, const CppArgumentList& arg)
+        : WebMethodTask<EventSender>(obj), m_arguments(arg) { }
+    virtual void runIfValid() { m_object->mouseDown(m_arguments, 0); }
+
+private:
+    CppArgumentList m_arguments;
+};
+
+class MouseUpTask: public WebMethodTask<EventSender> {
+public:
+    MouseUpTask(EventSender* obj, const CppArgumentList& arg)
+        : WebMethodTask<EventSender>(obj), m_arguments(arg) { }
+    virtual void runIfValid() { m_object->mouseUp(m_arguments, 0); }
+
+private:
+    CppArgumentList m_arguments;
+};
+
+void EventSender::scheduleAsynchronousClick(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+    m_delegate->postTask(new MouseDownTask(this, arguments));
+    m_delegate->postTask(new MouseUpTask(this, arguments));
+}
+
+class KeyDownTask : public WebMethodTask<EventSender> {
+public:
+    KeyDownTask(EventSender* obj, const CppArgumentList& arg)
+        : WebMethodTask<EventSender>(obj), m_arguments(arg) { }
+    virtual void runIfValid() { m_object->keyDown(m_arguments, 0); }
+
+private:
+    CppArgumentList m_arguments;
+};
+
+void EventSender::scheduleAsynchronousKeyDown(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+    m_delegate->postTask(new KeyDownTask(this, arguments));
+}
+
+void EventSender::beginDragWithFiles(const CppArgumentList& arguments, CppVariant* result)
+{
+    currentDragData.initialize();
+    vector<string> files = arguments[0].toStringVector();
+    WebVector<WebString> absoluteFilenames(files.size());
+    for (size_t i = 0; i < files.size(); ++i) {
+        WebDragData::Item item;
+        item.storageType = WebDragData::Item::StorageTypeFilename;
+        item.filenameData = m_delegate->getAbsoluteWebStringFromUTF8Path(files[i]);
+        currentDragData.addItem(item);
+        absoluteFilenames[i] = item.filenameData;
+    }
+    currentDragData.setFilesystemId(m_delegate->registerIsolatedFileSystem(absoluteFilenames));
+    currentDragEffectsAllowed = blink::WebDragOperationCopy;
+
+    // Provide a drag source.
+    webview()->dragTargetDragEnter(currentDragData, lastMousePos, lastMousePos, currentDragEffectsAllowed, 0);
+
+    // dragMode saves events and then replays them later. We don't need/want that.
+    dragMode.set(false);
+
+    // Make the rest of eventSender think a drag is in progress.
+    pressedButton = WebMouseEvent::ButtonLeft;
+
+    result->setNull();
+}
+
+void EventSender::addTouchPoint(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+
+    WebTouchPoint touchPoint;
+    touchPoint.state = WebTouchPoint::StatePressed;
+    touchPoint.position = WebPoint(arguments[0].toInt32(), arguments[1].toInt32());
+    touchPoint.screenPosition = touchPoint.position;
+
+    if (arguments.size() > 2) {
+        int radiusX = arguments[2].toInt32();
+        int radiusY = radiusX;
+        if (arguments.size() > 3)
+            radiusY = arguments[3].toInt32();
+
+        touchPoint.radiusX = radiusX;
+        touchPoint.radiusY = radiusY;
+    }
+
+    int lowestId = 0;
+    for (size_t i = 0; i < touchPoints.size(); i++) {
+        if (touchPoints[i].id == lowestId)
+            lowestId++;
+    }
+    touchPoint.id = lowestId;
+    touchPoints.push_back(touchPoint);
+}
+
+void EventSender::clearTouchPoints(const CppArgumentList&, CppVariant* result)
+{
+    result->setNull();
+    touchPoints.clear();
+}
+
+void EventSender::releaseTouchPoint(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+
+    const unsigned index = arguments[0].toInt32();
+    BLINK_ASSERT(index < touchPoints.size());
+
+    WebTouchPoint* touchPoint = &touchPoints[index];
+    touchPoint->state = WebTouchPoint::StateReleased;
+}
+
+void EventSender::setTouchModifier(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+
+    int mask = 0;
+    const string keyName = arguments[0].toString();
+    if (keyName == "shift")
+        mask = WebInputEvent::ShiftKey;
+    else if (keyName == "alt")
+        mask = WebInputEvent::AltKey;
+    else if (keyName == "ctrl")
+        mask = WebInputEvent::ControlKey;
+    else if (keyName == "meta")
+        mask = WebInputEvent::MetaKey;
+
+    if (arguments[1].toBoolean())
+        touchModifiers |= mask;
+    else
+        touchModifiers &= ~mask;
+}
+
+void EventSender::updateTouchPoint(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+
+    const unsigned index = arguments[0].toInt32();
+    BLINK_ASSERT(index < touchPoints.size());
+
+    WebPoint position(arguments[1].toInt32(), arguments[2].toInt32());
+    WebTouchPoint* touchPoint = &touchPoints[index];
+    touchPoint->state = WebTouchPoint::StateMoved;
+    touchPoint->position = position;
+    touchPoint->screenPosition = position;
+}
+
+void EventSender::cancelTouchPoint(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+
+    const unsigned index = arguments[0].toInt32();
+    BLINK_ASSERT(index < touchPoints.size());
+
+    WebTouchPoint* touchPoint = &touchPoints[index];
+    touchPoint->state = WebTouchPoint::StateCancelled;
+}
+
+void EventSender::sendCurrentTouchEvent(const WebInputEvent::Type type)
+{
+    BLINK_ASSERT(static_cast<unsigned>(WebTouchEvent::touchesLengthCap) > touchPoints.size());
+    if (shouldForceLayoutOnEvents())
+        webview()->layout();
+
+    WebTouchEvent touchEvent;
+    touchEvent.type = type;
+    touchEvent.modifiers = touchModifiers;
+    touchEvent.timeStampSeconds = getCurrentEventTimeSec(m_delegate);
+    touchEvent.touchesLength = touchPoints.size();
+    for (unsigned i = 0; i < touchPoints.size(); ++i)
+        touchEvent.touches[i] = touchPoints[i];
+    webview()->handleInputEvent(touchEvent);
+
+    for (unsigned i = 0; i < touchPoints.size(); ++i) {
+        WebTouchPoint* touchPoint = &touchPoints[i];
+        if (touchPoint->state == WebTouchPoint::StateReleased) {
+            touchPoints.erase(touchPoints.begin() + i);
+            --i;
+        } else
+            touchPoint->state = WebTouchPoint::StateStationary;
+    }
+}
+
+void EventSender::mouseDragBegin(const CppArgumentList& arguments, CppVariant* result)
+{
+    WebMouseWheelEvent event;
+    initMouseEvent(WebInputEvent::MouseWheel, WebMouseEvent::ButtonNone, lastMousePos, &event, getCurrentEventTimeSec(m_delegate));
+    event.phase = WebMouseWheelEvent::PhaseBegan;
+    event.hasPreciseScrollingDeltas = true;
+    webview()->handleInputEvent(event);
+}
+
+void EventSender::mouseDragEnd(const CppArgumentList& arguments, CppVariant* result)
+{
+    WebMouseWheelEvent event;
+    initMouseEvent(WebInputEvent::MouseWheel, WebMouseEvent::ButtonNone, lastMousePos, &event, getCurrentEventTimeSec(m_delegate));
+    event.phase = WebMouseWheelEvent::PhaseEnded;
+    event.hasPreciseScrollingDeltas = true;
+    webview()->handleInputEvent(event);
+}
+
+void EventSender::mouseMomentumBegin(const CppArgumentList& arguments, CppVariant* result)
+{
+    WebMouseWheelEvent event;
+    initMouseEvent(WebInputEvent::MouseWheel, WebMouseEvent::ButtonNone, lastMousePos, &event, getCurrentEventTimeSec(m_delegate));
+    event.momentumPhase = WebMouseWheelEvent::PhaseBegan;
+    event.hasPreciseScrollingDeltas = true;
+    webview()->handleInputEvent(event);
+}
+
+void EventSender::mouseMomentumScrollBy(const CppArgumentList& arguments, CppVariant* result)
+{
+    WebMouseWheelEvent event;
+    initMouseWheelEvent(arguments, result, true, &event);
+    event.momentumPhase = WebMouseWheelEvent::PhaseChanged;
+    event.hasPreciseScrollingDeltas = true;
+    webview()->handleInputEvent(event);
+}
+
+void EventSender::mouseMomentumEnd(const CppArgumentList& arguments, CppVariant* result)
+{
+    WebMouseWheelEvent event;
+    initMouseEvent(WebInputEvent::MouseWheel, WebMouseEvent::ButtonNone, lastMousePos, &event, getCurrentEventTimeSec(m_delegate));
+    event.momentumPhase = WebMouseWheelEvent::PhaseEnded;
+    event.hasPreciseScrollingDeltas = true;
+    webview()->handleInputEvent(event);
+}
+
+void EventSender::initMouseWheelEvent(const CppArgumentList& arguments, CppVariant* result, bool continuous, WebMouseWheelEvent* event)
+{
+    result->setNull();
+
+    if (arguments.size() < 2 || !arguments[0].isNumber() || !arguments[1].isNumber())
+        return;
+
+    // Force a layout here just to make sure every position has been
+    // determined before we send events (as well as all the other methods
+    // that send an event do).
+    if (shouldForceLayoutOnEvents())
+        webview()->layout();
+
+    int horizontal = arguments[0].toInt32();
+    int vertical = arguments[1].toInt32();
+    int paged = false;
+    int hasPreciseScrollingDeltas = false;
+
+    if (arguments.size() > 2 && arguments[2].isBool())
+        paged = arguments[2].toBoolean();
+
+    if (arguments.size() > 3 && arguments[3].isBool())
+        hasPreciseScrollingDeltas = arguments[3].toBoolean();
+
+    initMouseEvent(WebInputEvent::MouseWheel, pressedButton, lastMousePos, event, getCurrentEventTimeSec(m_delegate));
+    event->wheelTicksX = static_cast<float>(horizontal);
+    event->wheelTicksY = static_cast<float>(vertical);
+    event->deltaX = event->wheelTicksX;
+    event->deltaY = event->wheelTicksY;
+    event->scrollByPage = paged;
+    event->hasPreciseScrollingDeltas = hasPreciseScrollingDeltas;
+
+    if (continuous) {
+        event->wheelTicksX /= scrollbarPixelsPerTick;
+        event->wheelTicksY /= scrollbarPixelsPerTick;
+    } else {
+        event->deltaX *= scrollbarPixelsPerTick;
+        event->deltaY *= scrollbarPixelsPerTick;
+    }
+}
+
+void EventSender::touchEnd(const CppArgumentList&, CppVariant* result)
+{
+    result->setNull();
+    sendCurrentTouchEvent(WebInputEvent::TouchEnd);
+}
+
+void EventSender::touchMove(const CppArgumentList&, CppVariant* result)
+{
+    result->setNull();
+    sendCurrentTouchEvent(WebInputEvent::TouchMove);
+}
+
+void EventSender::touchStart(const CppArgumentList&, CppVariant* result)
+{
+    result->setNull();
+    sendCurrentTouchEvent(WebInputEvent::TouchStart);
+}
+
+void EventSender::touchCancel(const CppArgumentList&, CppVariant* result)
+{
+    result->setNull();
+    sendCurrentTouchEvent(WebInputEvent::TouchCancel);
+}
+
+void EventSender::gestureScrollBegin(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+    gestureEvent(WebInputEvent::GestureScrollBegin, arguments);
+}
+
+void EventSender::gestureScrollEnd(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+    gestureEvent(WebInputEvent::GestureScrollEnd, arguments);
+}
+
+void EventSender::gestureScrollUpdate(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+    gestureEvent(WebInputEvent::GestureScrollUpdate, arguments);
+}
+
+void EventSender::gestureScrollUpdateWithoutPropagation(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+    gestureEvent(WebInputEvent::GestureScrollUpdateWithoutPropagation, arguments);
+}
+
+void EventSender::gestureTap(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+    gestureEvent(WebInputEvent::GestureTap, arguments);
+}
+
+void EventSender::gestureTapDown(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+    gestureEvent(WebInputEvent::GestureTapDown, arguments);
+}
+
+void EventSender::gestureShowPress(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+    gestureEvent(WebInputEvent::GestureShowPress, arguments);
+}
+
+void EventSender::gestureTapCancel(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+    gestureEvent(WebInputEvent::GestureTapCancel, arguments);
+}
+
+void EventSender::gestureLongPress(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+    gestureEvent(WebInputEvent::GestureLongPress, arguments);
+}
+
+void EventSender::gestureLongTap(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+    gestureEvent(WebInputEvent::GestureLongTap, arguments);
+}
+
+void EventSender::gestureTwoFingerTap(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+    gestureEvent(WebInputEvent::GestureTwoFingerTap, arguments);
+}
+
+void EventSender::gestureScrollFirstPoint(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+    if (arguments.size() < 2 || !arguments[0].isNumber() || !arguments[1].isNumber())
+        return;
+
+    WebPoint point(arguments[0].toInt32(), arguments[1].toInt32());
+    m_currentGestureLocation = point;
+}
+
+void EventSender::gestureEvent(WebInputEvent::Type type, const CppArgumentList& arguments)
+{
+    if (arguments.size() < 2 || !arguments[0].isNumber() || !arguments[1].isNumber())
+        return;
+
+    WebPoint point(arguments[0].toInt32(), arguments[1].toInt32());
+
+    WebGestureEvent event;
+    event.type = type;
+
+    switch (type) {
+    case WebInputEvent::GestureScrollUpdate:
+    case WebInputEvent::GestureScrollUpdateWithoutPropagation:
+        event.data.scrollUpdate.deltaX = static_cast<float>(arguments[0].toDouble());
+        event.data.scrollUpdate.deltaY = static_cast<float>(arguments[1].toDouble());
+        event.x = m_currentGestureLocation.x;
+        event.y = m_currentGestureLocation.y;
+        m_currentGestureLocation.x = m_currentGestureLocation.x + event.data.scrollUpdate.deltaX;
+        m_currentGestureLocation.y = m_currentGestureLocation.y + event.data.scrollUpdate.deltaY;
+        break;
+
+    case WebInputEvent::GestureScrollBegin:
+        m_currentGestureLocation = WebPoint(point.x, point.y);
+        event.x = m_currentGestureLocation.x;
+        event.y = m_currentGestureLocation.y;
+        break;
+    case WebInputEvent::GestureScrollEnd:
+    case WebInputEvent::GestureFlingStart:
+        event.x = m_currentGestureLocation.x;
+        event.y = m_currentGestureLocation.y;
+        break;
+    case WebInputEvent::GestureTap:
+        if (arguments.size() >= 3)
+            event.data.tap.tapCount = static_cast<float>(arguments[2].toDouble());
+        else
+          event.data.tap.tapCount = 1;
+        event.x = point.x;
+        event.y = point.y;
+        break;
+    case WebInputEvent::GestureTapUnconfirmed:
+        if (arguments.size() >= 3)
+            event.data.tap.tapCount = static_cast<float>(arguments[2].toDouble());
+        else
+          event.data.tap.tapCount = 1;
+        event.x = point.x;
+        event.y = point.y;
+        break;
+    case WebInputEvent::GestureTapDown:
+        event.x = point.x;
+        event.y = point.y;
+        if (arguments.size() >= 4) {
+            event.data.tapDown.width = static_cast<float>(arguments[2].toDouble());
+            event.data.tapDown.height = static_cast<float>(arguments[3].toDouble());
+        }
+        break;
+    case WebInputEvent::GestureShowPress:
+        event.x = point.x;
+        event.y = point.y;
+        if (arguments.size() >= 4) {
+            event.data.showPress.width = static_cast<float>(arguments[2].toDouble());
+            event.data.showPress.height = static_cast<float>(arguments[3].toDouble());
+        }
+        break;
+    case WebInputEvent::GestureTapCancel:
+        event.x = point.x;
+        event.y = point.y;
+        break;
+    case WebInputEvent::GestureLongPress:
+        event.x = point.x;
+        event.y = point.y;
+        if (arguments.size() >= 4) {
+            event.data.longPress.width = static_cast<float>(arguments[2].toDouble());
+            event.data.longPress.height = static_cast<float>(arguments[3].toDouble());
+        }
+        break;
+    case WebInputEvent::GestureLongTap:
+        event.x = point.x;
+        event.y = point.y;
+        if (arguments.size() >= 4) {
+            event.data.longPress.width = static_cast<float>(arguments[2].toDouble());
+            event.data.longPress.height = static_cast<float>(arguments[3].toDouble());
+        }
+        break;
+    case WebInputEvent::GestureTwoFingerTap:
+        event.x = point.x;
+        event.y = point.y;
+        if (arguments.size() >= 4) {
+            event.data.twoFingerTap.firstFingerWidth = static_cast<float>(arguments[2].toDouble());
+            event.data.twoFingerTap.firstFingerHeight = static_cast<float>(arguments[3].toDouble());
+        }
+        break;
+    default:
+        BLINK_ASSERT_NOT_REACHED();
+    }
+
+    event.globalX = event.x;
+    event.globalY = event.y;
+    event.timeStampSeconds = getCurrentEventTimeSec(m_delegate);
+
+    if (shouldForceLayoutOnEvents())
+        webview()->layout();
+
+    webview()->handleInputEvent(event);
+
+    // Long press might start a drag drop session. Complete it if so.
+    if (type == WebInputEvent::GestureLongPress && !currentDragData.isNull()) {
+        WebMouseEvent mouseEvent;
+        initMouseEvent(WebInputEvent::MouseDown, pressedButton, point, &mouseEvent, getCurrentEventTimeSec(m_delegate));
+        finishDragAndDrop(mouseEvent, blink::WebDragOperationNone);
+    }
+}
+
+void EventSender::gestureFlingCancel(const CppArgumentList&, CppVariant* result)
+{
+    result->setNull();
+
+    WebGestureEvent event;
+    event.type = WebInputEvent::GestureFlingCancel;
+    event.timeStampSeconds = getCurrentEventTimeSec(m_delegate);
+
+    if (shouldForceLayoutOnEvents())
+        webview()->layout();
+
+    webview()->handleInputEvent(event);
+}
+
+void EventSender::gestureFlingStart(const CppArgumentList& arguments, CppVariant* result)
+{
+    result->setNull();
+    if (arguments.size() < 4)
+        return;
+
+    for (int i = 0; i < 4; i++)
+        if (!arguments[i].isNumber())
+            return;
+
+    WebGestureEvent event;
+    event.type = WebInputEvent::GestureFlingStart;
+
+    event.x = static_cast<float>(arguments[0].toDouble());
+    event.y = static_cast<float>(arguments[1].toDouble());
+    event.globalX = event.x;
+    event.globalY = event.y;
+
+    event.data.flingStart.velocityX = static_cast<float>(arguments[2].toDouble());
+    event.data.flingStart.velocityY = static_cast<float>(arguments[3].toDouble());
+    event.timeStampSeconds = getCurrentEventTimeSec(m_delegate);
+
+    if (shouldForceLayoutOnEvents())
+        webview()->layout();
+
+    webview()->handleInputEvent(event);
+}
+
+//
+// Unimplemented stubs
+//
+
+void EventSender::enableDOMUIEventLogging(const CppArgumentList&, CppVariant* result)
+{
+    result->setNull();
+}
+
+void EventSender::fireKeyboardEventsToElement(const CppArgumentList&, CppVariant* result)
+{
+    result->setNull();
+}
+
+void EventSender::clearKillRing(const CppArgumentList&, CppVariant* result)
+{
+    result->setNull();
+}
+
+}