Source/web/ChromeClientImpl.cpp

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This source file includes following definitions.
toWebAXEvent
m_pagePopupDriver
webView
chromeDestroyed
setWindowRect
windowRect
pageRect
focus
canTakeFocus
takeFocus
focusedNodeChanged
focusedFrameChanged
createWindow
updatePolicyForEvent
getNavigationPolicy
show
canRunModal
runModal
setToolbarsVisible
toolbarsVisible
setStatusbarVisible
statusbarVisible
setScrollbarsVisible
scrollbarsVisible
setMenubarVisible
menubarVisible
setResizable
shouldReportDetailedMessageForSource
addMessageToConsole
canRunBeforeUnloadConfirmPanel
runBeforeUnloadConfirmPanel
closeWindowSoon
runJavaScriptAlert
runJavaScriptConfirm
runJavaScriptPrompt
setStatusbarText
tabsToLinks
windowResizerRect
invalidateContentsAndRootView
invalidateContentsForSlowScroll
scheduleAnimation
isCompositorFramePending
scroll
rootViewToScreen
screenInfo
contentsSizeChanged
deviceOrPageScaleFactorChanged
layoutUpdated
mouseDidMoveOverElement
setToolTip
dispatchViewportPropertiesDidChange
print
createColorChooser
openDateTimeChooser
runOpenPanel
enumerateChosenDirectory
setCursor
setCursor
setCursorForPlugin
postAccessibilityNotification
acceptLanguages
paintCustomOverhangArea
graphicsLayerFactory
attachRootGraphicsLayer
allowedCompositingTriggers
enterFullScreenForElement
exitFullScreenForElement
hasOpenedPopup
createPopupMenu
openPagePopup
closePagePopup
setPagePopupDriver
resetPagePopupDriver
isPasswordGenerationEnabled
openPasswordGenerator
shouldRunModalDialogDuringPageDismissal
shouldRubberBandInDirection
numWheelEventHandlersChanged
needTouchEvents
setTouchAction
requestPointerLock
requestPointerUnlock
annotatedRegionsChanged
didAssociateFormControls
didCancelCompositionOnSelectionChange
willSetInputMethodState
handleKeyboardEventOnTextField
forwardInputEvent
didChangeValueInTextField
didEndEditingOnTextField
openTextDataListChooser
create
registerProtocolHandler
isProtocolHandlerRegistered
unregisterProtocolHandler
/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 *
 * 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.
 */

#include "config.h"
#include "ChromeClientImpl.h"

#include "ColorChooserPopupUIController.h"
#include "ColorChooserUIController.h"
#include "DateTimeChooserImpl.h"
#include "ExternalDateTimeChooser.h"
#include "ExternalPopupMenu.h"
#include "HTMLNames.h"
#include "PopupMenuChromium.h"
#include "RuntimeEnabledFeatures.h"
#include "WebAXObject.h"
#include "WebAutofillClient.h"
#include "WebColorChooser.h"
#include "WebColorSuggestion.h"
#include "WebConsoleMessage.h"
#include "WebFileChooserCompletionImpl.h"
#include "WebFrameClient.h"
#include "WebFrameImpl.h"
#include "WebInputElement.h"
#include "WebInputEvent.h"
#include "WebInputEventConversion.h"
#include "WebKit.h"
#include "WebNode.h"
#include "WebPasswordGeneratorClient.h"
#include "WebPlugin.h"
#include "WebPluginContainerImpl.h"
#include "WebPopupMenuImpl.h"
#include "WebPopupMenuInfo.h"
#include "WebSettings.h"
#include "WebSettingsImpl.h"
#include "WebTextDirection.h"
#include "WebUserGestureIndicator.h"
#include "WebUserGestureToken.h"
#include "WebViewClient.h"
#include "WebViewImpl.h"
#include "WebWindowFeatures.h"
#include "bindings/v8/ScriptController.h"
#include "core/accessibility/AXObject.h"
#include "core/accessibility/AXObjectCache.h"
#include "core/dom/Document.h"
#include "core/dom/DocumentFullscreen.h"
#include "core/dom/Node.h"
#include "core/events/KeyboardEvent.h"
#include "core/events/MouseEvent.h"
#include "core/events/WheelEvent.h"
#include "core/html/HTMLInputElement.h"
#include "core/loader/DocumentLoader.h"
#include "core/loader/FrameLoadRequest.h"
#include "core/frame/Console.h"
#include "core/frame/FrameView.h"
#include "core/page/Page.h"
#include "core/page/PagePopupDriver.h"
#include "core/frame/Settings.h"
#include "core/page/WindowFeatures.h"
#include "core/rendering/HitTestResult.h"
#include "core/rendering/RenderWidget.h"
#include "platform/ColorChooser.h"
#include "platform/ColorChooserClient.h"
#include "platform/Cursor.h"
#include "platform/DateTimeChooser.h"
#include "platform/FileChooser.h"
#include "platform/NotImplemented.h"
#include "platform/PlatformScreen.h"
#include "platform/exported/WrappedResourceRequest.h"
#include "platform/geometry/FloatRect.h"
#include "platform/geometry/IntRect.h"
#include "platform/graphics/GraphicsLayer.h"
#include "platform/weborigin/SecurityOrigin.h"
#include "public/platform/Platform.h"
#include "public/platform/WebCursorInfo.h"
#include "public/platform/WebRect.h"
#include "public/platform/WebURLRequest.h"
#include "public/web/WebTouchAction.h"
#include "wtf/text/CString.h"
#include "wtf/text/StringBuilder.h"
#include "wtf/text/StringConcatenate.h"
#include "wtf/unicode/CharacterNames.h"

using namespace WebCore;

namespace blink {

// Converts a WebCore::AXObjectCache::AXNotification to a blink::WebAXEvent
static WebAXEvent toWebAXEvent(AXObjectCache::AXNotification notification)
{
    // These enums have the same values; enforced in AssertMatchingEnums.cpp.
    return static_cast<WebAXEvent>(notification);
}

ChromeClientImpl::ChromeClientImpl(WebViewImpl* webView)
    : m_webView(webView)
    , m_toolbarsVisible(true)
    , m_statusbarVisible(true)
    , m_scrollbarsVisible(true)
    , m_menubarVisible(true)
    , m_resizable(true)
    , m_pagePopupDriver(webView)
{
}

ChromeClientImpl::~ChromeClientImpl()
{
}

void* ChromeClientImpl::webView() const
{
    return static_cast<void*>(m_webView);
}

void ChromeClientImpl::chromeDestroyed()
{
    // Our lifetime is bound to the WebViewImpl.
}

void ChromeClientImpl::setWindowRect(const FloatRect& r)
{
    if (m_webView->client())
        m_webView->client()->setWindowRect(IntRect(r));
}

FloatRect ChromeClientImpl::windowRect()
{
    WebRect rect;
    if (m_webView->client())
        rect = m_webView->client()->rootWindowRect();
    else {
        // These numbers will be fairly wrong. The window's x/y coordinates will
        // be the top left corner of the screen and the size will be the content
        // size instead of the window size.
        rect.width = m_webView->size().width;
        rect.height = m_webView->size().height;
    }
    return FloatRect(rect);
}

FloatRect ChromeClientImpl::pageRect()
{
    // We hide the details of the window's border thickness from the web page by
    // simple re-using the window position here.  So, from the point-of-view of
    // the web page, the window has no border.
    return windowRect();
}

void ChromeClientImpl::focus()
{
    if (m_webView->client())
        m_webView->client()->didFocus();
}

bool ChromeClientImpl::canTakeFocus(FocusType)
{
    // For now the browser can always take focus if we're not running layout
    // tests.
    return !layoutTestMode();
}

void ChromeClientImpl::takeFocus(FocusType type)
{
    if (!m_webView->client())
        return;
    if (type == FocusTypeBackward)
        m_webView->client()->focusPrevious();
    else
        m_webView->client()->focusNext();
}

void ChromeClientImpl::focusedNodeChanged(Node* node)
{
    m_webView->client()->focusedNodeChanged(WebNode(node));

    WebURL focusURL;
    if (node && node->isLink()) {
        // This HitTestResult hack is the easiest way to get a link URL out of a
        // WebCore::Node.
        HitTestResult hitTest(IntPoint(0, 0));
        // This cast must be valid because of the isLink() check.
        hitTest.setURLElement(toElement(node));
        if (hitTest.isLiveLink())
            focusURL = hitTest.absoluteLinkURL();
    }
    m_webView->client()->setKeyboardFocusURL(focusURL);
}

void ChromeClientImpl::focusedFrameChanged(WebCore::LocalFrame* frame)
{
    WebFrameImpl* webframe = WebFrameImpl::fromFrame(frame);
    if (webframe && webframe->client())
        webframe->client()->frameFocused();
}

Page* ChromeClientImpl::createWindow(LocalFrame* frame, const FrameLoadRequest& r, const WindowFeatures& features,
    NavigationPolicy navigationPolicy, ShouldSendReferrer shouldSendReferrer)
{
    if (!m_webView->client())
        return 0;

    WebNavigationPolicy policy = static_cast<WebNavigationPolicy>(navigationPolicy);
    if (policy == WebNavigationPolicyIgnore)
        policy = getNavigationPolicy();

    ASSERT(frame->document());
    DocumentFullscreen::webkitCancelFullScreen(*frame->document());

    WebViewImpl* newView = toWebViewImpl(
        m_webView->client()->createView(WebFrameImpl::fromFrame(frame), WrappedResourceRequest(r.resourceRequest()), features, r.frameName(), policy, shouldSendReferrer == NeverSendReferrer));
    if (!newView)
        return 0;
    return newView->page();
}

static inline void updatePolicyForEvent(const WebInputEvent* inputEvent, NavigationPolicy* policy)
{
    if (!inputEvent || inputEvent->type != WebInputEvent::MouseUp)
        return;

    const WebMouseEvent* mouseEvent = static_cast<const WebMouseEvent*>(inputEvent);

    unsigned short buttonNumber;
    switch (mouseEvent->button) {
    case WebMouseEvent::ButtonLeft:
        buttonNumber = 0;
        break;
    case WebMouseEvent::ButtonMiddle:
        buttonNumber = 1;
        break;
    case WebMouseEvent::ButtonRight:
        buttonNumber = 2;
        break;
    default:
        return;
    }
    bool ctrl = mouseEvent->modifiers & WebMouseEvent::ControlKey;
    bool shift = mouseEvent->modifiers & WebMouseEvent::ShiftKey;
    bool alt = mouseEvent->modifiers & WebMouseEvent::AltKey;
    bool meta = mouseEvent->modifiers & WebMouseEvent::MetaKey;

    NavigationPolicy userPolicy = *policy;
    navigationPolicyFromMouseEvent(buttonNumber, ctrl, shift, alt, meta, &userPolicy);
    // User and app agree that we want a new window; let the app override the decorations.
    if (userPolicy == NavigationPolicyNewWindow && *policy == NavigationPolicyNewPopup)
        return;
    *policy = userPolicy;
}

WebNavigationPolicy ChromeClientImpl::getNavigationPolicy()
{
    // If our default configuration was modified by a script or wasn't
    // created by a user gesture, then show as a popup. Else, let this
    // new window be opened as a toplevel window.
    bool asPopup = !m_toolbarsVisible
        || !m_statusbarVisible
        || !m_scrollbarsVisible
        || !m_menubarVisible
        || !m_resizable;

    NavigationPolicy policy = NavigationPolicyNewForegroundTab;
    if (asPopup)
        policy = NavigationPolicyNewPopup;
    updatePolicyForEvent(WebViewImpl::currentInputEvent(), &policy);

    return static_cast<WebNavigationPolicy>(policy);
}

void ChromeClientImpl::show(NavigationPolicy navigationPolicy)
{
    if (!m_webView->client())
        return;

    WebNavigationPolicy policy = static_cast<WebNavigationPolicy>(navigationPolicy);
    if (policy == WebNavigationPolicyIgnore)
        policy = getNavigationPolicy();
    m_webView->client()->show(policy);
}

bool ChromeClientImpl::canRunModal()
{
    return !!m_webView->client();
}

void ChromeClientImpl::runModal()
{
    if (m_webView->client())
        m_webView->client()->runModal();
}

void ChromeClientImpl::setToolbarsVisible(bool value)
{
    m_toolbarsVisible = value;
}

bool ChromeClientImpl::toolbarsVisible()
{
    return m_toolbarsVisible;
}

void ChromeClientImpl::setStatusbarVisible(bool value)
{
    m_statusbarVisible = value;
}

bool ChromeClientImpl::statusbarVisible()
{
    return m_statusbarVisible;
}

void ChromeClientImpl::setScrollbarsVisible(bool value)
{
    m_scrollbarsVisible = value;
    WebFrameImpl* webFrame = toWebFrameImpl(m_webView->mainFrame());
    if (webFrame)
        webFrame->setCanHaveScrollbars(value);
}

bool ChromeClientImpl::scrollbarsVisible()
{
    return m_scrollbarsVisible;
}

void ChromeClientImpl::setMenubarVisible(bool value)
{
    m_menubarVisible = value;
}

bool ChromeClientImpl::menubarVisible()
{
    return m_menubarVisible;
}

void ChromeClientImpl::setResizable(bool value)
{
    m_resizable = value;
}

bool ChromeClientImpl::shouldReportDetailedMessageForSource(const String& url)
{
    WebFrameImpl* webframe = m_webView->mainFrameImpl();
    return webframe->client() && webframe->client()->shouldReportDetailedMessageForSource(url);
}

void ChromeClientImpl::addMessageToConsole(MessageSource source, MessageLevel level, const String& message, unsigned lineNumber, const String& sourceID, const String& stackTrace)
{
    WebFrameImpl* webframe = m_webView->mainFrameImpl();
    if (webframe->client()) {
        webframe->client()->didAddMessageToConsole(
            WebConsoleMessage(static_cast<WebConsoleMessage::Level>(level), message),
            sourceID,
            lineNumber,
            stackTrace);
    }
}

bool ChromeClientImpl::canRunBeforeUnloadConfirmPanel()
{
    return !!m_webView->client();
}

bool ChromeClientImpl::runBeforeUnloadConfirmPanel(const String& message, LocalFrame* frame)
{
    if (m_webView->client()) {
        return m_webView->client()->runModalBeforeUnloadDialog(
            WebFrameImpl::fromFrame(frame), message);
    }
    return false;
}

void ChromeClientImpl::closeWindowSoon()
{
    // Make sure this Page can no longer be found by JS.
    Page::ordinaryPages().remove(m_webView->page());

    // Make sure that all loading is stopped.  Ensures that JS stops executing!
    m_webView->mainFrame()->stopLoading();

    if (m_webView->client())
        m_webView->client()->closeWidgetSoon();
}

// Although a LocalFrame is passed in, we don't actually use it, since we
// already know our own m_webView.
void ChromeClientImpl::runJavaScriptAlert(LocalFrame* frame, const String& message)
{
    if (m_webView->client()) {
        if (WebUserGestureIndicator::isProcessingUserGesture())
            WebUserGestureIndicator::currentUserGestureToken().setJavascriptPrompt();
        m_webView->client()->runModalAlertDialog(
            WebFrameImpl::fromFrame(frame), message);
    }
}

// See comments for runJavaScriptAlert().
bool ChromeClientImpl::runJavaScriptConfirm(LocalFrame* frame, const String& message)
{
    if (m_webView->client()) {
        if (WebUserGestureIndicator::isProcessingUserGesture())
            WebUserGestureIndicator::currentUserGestureToken().setJavascriptPrompt();
        return m_webView->client()->runModalConfirmDialog(
            WebFrameImpl::fromFrame(frame), message);
    }
    return false;
}

// See comments for runJavaScriptAlert().
bool ChromeClientImpl::runJavaScriptPrompt(LocalFrame* frame,
                                           const String& message,
                                           const String& defaultValue,
                                           String& result)
{
    if (m_webView->client()) {
        if (WebUserGestureIndicator::isProcessingUserGesture())
            WebUserGestureIndicator::currentUserGestureToken().setJavascriptPrompt();
        WebString actualValue;
        bool ok = m_webView->client()->runModalPromptDialog(
            WebFrameImpl::fromFrame(frame),
            message,
            defaultValue,
            &actualValue);
        if (ok)
            result = actualValue;
        return ok;
    }
    return false;
}

void ChromeClientImpl::setStatusbarText(const String& message)
{
    if (m_webView->client())
        m_webView->client()->setStatusText(message);
}

bool ChromeClientImpl::tabsToLinks()
{
    return m_webView->tabsToLinks();
}

IntRect ChromeClientImpl::windowResizerRect() const
{
    IntRect result;
    if (m_webView->client())
        result = m_webView->client()->windowResizerRect();
    return result;
}

void ChromeClientImpl::invalidateContentsAndRootView(const IntRect& updateRect)
{
    if (updateRect.isEmpty())
        return;
    m_webView->invalidateRect(updateRect);
}

void ChromeClientImpl::invalidateContentsForSlowScroll(const IntRect& updateRect)
{
    invalidateContentsAndRootView(updateRect);
}

void ChromeClientImpl::scheduleAnimation()
{
    m_webView->scheduleAnimation();
}

bool ChromeClientImpl::isCompositorFramePending() const
{
    return m_webView->client()->isCompositorFramePending();
}

void ChromeClientImpl::scroll(
    const IntSize& scrollDelta, const IntRect& scrollRect,
    const IntRect& clipRect)
{
    if (!m_webView->isAcceleratedCompositingActive()) {
        if (m_webView->client()) {
            int dx = scrollDelta.width();
            int dy = scrollDelta.height();
            m_webView->client()->didScrollRect(dx, dy, intersection(scrollRect, clipRect));
        }
    } else {
        m_webView->scrollRootLayer();
    }
}

IntRect ChromeClientImpl::rootViewToScreen(const IntRect& rect) const
{
    IntRect screenRect(rect);

    if (m_webView->client()) {
        WebRect windowRect = m_webView->client()->windowRect();
        screenRect.move(windowRect.x, windowRect.y);
    }

    return screenRect;
}

WebScreenInfo ChromeClientImpl::screenInfo() const
{
    return m_webView->client() ? m_webView->client()->screenInfo() : WebScreenInfo();
}

void ChromeClientImpl::contentsSizeChanged(LocalFrame* frame, const IntSize& size) const
{
    m_webView->didChangeContentsSize();

    WebFrameImpl* webframe = WebFrameImpl::fromFrame(frame);
    webframe->didChangeContentsSize(size);
    if (webframe->client())
        webframe->client()->didChangeContentsSize(webframe, size);

    frame->loader().restoreScrollPositionAndViewState();
}

void ChromeClientImpl::deviceOrPageScaleFactorChanged() const
{
    m_webView->deviceOrPageScaleFactorChanged();
}

void ChromeClientImpl::layoutUpdated(LocalFrame* frame) const
{
    m_webView->layoutUpdated(WebFrameImpl::fromFrame(frame));
}

void ChromeClientImpl::mouseDidMoveOverElement(
    const HitTestResult& result, unsigned modifierFlags)
{
    if (!m_webView->client())
        return;

    WebURL url;
    // Find out if the mouse is over a link, and if so, let our UI know...
    if (result.isLiveLink() && !result.absoluteLinkURL().string().isEmpty()) {
        url = result.absoluteLinkURL();
    } else if (result.innerNonSharedNode()
        && (isHTMLObjectElement(*result.innerNonSharedNode())
            || isHTMLEmbedElement(*result.innerNonSharedNode()))) {
        RenderObject* object = result.innerNonSharedNode()->renderer();
        if (object && object->isWidget()) {
            Widget* widget = toRenderWidget(object)->widget();
            if (widget && widget->isPluginContainer()) {
                WebPluginContainerImpl* plugin = toWebPluginContainerImpl(widget);
                url = plugin->plugin()->linkAtPosition(result.roundedPointInInnerNodeFrame());
            }
        }
    }

    m_webView->client()->setMouseOverURL(url);
}

void ChromeClientImpl::setToolTip(const String& tooltipText, TextDirection dir)
{
    if (!m_webView->client())
        return;
    WebTextDirection textDirection = (dir == RTL) ?
        WebTextDirectionRightToLeft :
        WebTextDirectionLeftToRight;
    m_webView->client()->setToolTipText(
        tooltipText, textDirection);
}

void ChromeClientImpl::dispatchViewportPropertiesDidChange(const ViewportDescription& description) const
{
    m_webView->updatePageDefinedViewportConstraints(description);
}

void ChromeClientImpl::print(LocalFrame* frame)
{
    if (m_webView->client())
        m_webView->client()->printPage(WebFrameImpl::fromFrame(frame));
}

PassOwnPtr<ColorChooser> ChromeClientImpl::createColorChooser(ColorChooserClient* chooserClient, const Color&)
{
    OwnPtr<ColorChooserUIController> controller;
    if (RuntimeEnabledFeatures::pagePopupEnabled())
        controller = adoptPtr(new ColorChooserPopupUIController(this, chooserClient));
    else
        controller = adoptPtr(new ColorChooserUIController(this, chooserClient));
    controller->openUI();
    return controller.release();
}

PassRefPtr<DateTimeChooser> ChromeClientImpl::openDateTimeChooser(DateTimeChooserClient* pickerClient, const DateTimeChooserParameters& parameters)
{
#if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
    return DateTimeChooserImpl::create(this, pickerClient, parameters);
#else
    return ExternalDateTimeChooser::create(this, m_webView->client(), pickerClient, parameters);
#endif
}

void ChromeClientImpl::runOpenPanel(LocalFrame* frame, PassRefPtr<FileChooser> fileChooser)
{
    WebViewClient* client = m_webView->client();
    if (!client)
        return;

    WebFileChooserParams params;
    params.multiSelect = fileChooser->settings().allowsMultipleFiles;
    params.directory = fileChooser->settings().allowsDirectoryUpload;
    params.acceptTypes = fileChooser->settings().acceptTypes();
    params.selectedFiles = fileChooser->settings().selectedFiles;
    if (params.selectedFiles.size() > 0)
        params.initialValue = params.selectedFiles[0];
#if ENABLE(MEDIA_CAPTURE)
    params.useMediaCapture = fileChooser->settings().useMediaCapture;
#endif
    WebFileChooserCompletionImpl* chooserCompletion =
        new WebFileChooserCompletionImpl(fileChooser);

    if (client->runFileChooser(params, chooserCompletion))
        return;

    // Choosing failed, so do callback with an empty list.
    chooserCompletion->didChooseFile(WebVector<WebString>());
}

void ChromeClientImpl::enumerateChosenDirectory(FileChooser* fileChooser)
{
    WebViewClient* client = m_webView->client();
    if (!client)
        return;

    WebFileChooserCompletionImpl* chooserCompletion =
        new WebFileChooserCompletionImpl(fileChooser);

    ASSERT(fileChooser && fileChooser->settings().selectedFiles.size());

    // If the enumeration can't happen, call the callback with an empty list.
    if (!client->enumerateChosenDirectory(fileChooser->settings().selectedFiles[0], chooserCompletion))
        chooserCompletion->didChooseFile(WebVector<WebString>());
}

void ChromeClientImpl::setCursor(const WebCore::Cursor& cursor)
{
    setCursor(WebCursorInfo(cursor));
}

void ChromeClientImpl::setCursor(const WebCursorInfo& cursor)
{
#if OS(MACOSX)
    // On Mac the mousemove event propagates to both the popup and main window.
    // If a popup is open we don't want the main window to change the cursor.
    if (m_webView->hasOpenedPopup())
        return;
#endif
    if (m_webView->client())
        m_webView->client()->didChangeCursor(cursor);
}

void ChromeClientImpl::setCursorForPlugin(const WebCursorInfo& cursor)
{
    setCursor(cursor);
}

void ChromeClientImpl::postAccessibilityNotification(AXObject* obj, AXObjectCache::AXNotification notification)
{
    // Alert assistive technology about the accessibility object notification.
    if (!obj)
        return;
    if (m_webView->client())
        m_webView->client()->postAccessibilityEvent(WebAXObject(obj), toWebAXEvent(notification));
}

String ChromeClientImpl::acceptLanguages()
{
    return m_webView->client()->acceptLanguages();
}

bool ChromeClientImpl::paintCustomOverhangArea(GraphicsContext* context, const IntRect& horizontalOverhangArea, const IntRect& verticalOverhangArea, const IntRect& dirtyRect)
{
    LocalFrame* frame = m_webView->mainFrameImpl()->frame();
    WebPluginContainerImpl* pluginContainer = WebFrameImpl::pluginContainerFromFrame(frame);
    if (pluginContainer)
        return pluginContainer->paintCustomOverhangArea(context, horizontalOverhangArea, verticalOverhangArea, dirtyRect);
    return false;
}

GraphicsLayerFactory* ChromeClientImpl::graphicsLayerFactory() const
{
    return m_webView->graphicsLayerFactory();
}

void ChromeClientImpl::attachRootGraphicsLayer(GraphicsLayer* rootLayer)
{
    m_webView->setRootGraphicsLayer(rootLayer);
}

WebCore::CompositingTriggerFlags ChromeClientImpl::allowedCompositingTriggers() const
{
    if (!m_webView->allowsAcceleratedCompositing())
        return 0;

    WebCore::CompositingTriggerFlags flags = 0;
    Settings& settings = m_webView->page()->settings();
    if (settings.acceleratedCompositingFor3DTransformsEnabled())
        flags |= WebCore::ThreeDTransformTrigger;
    if (settings.acceleratedCompositingForVideoEnabled())
        flags |= WebCore::VideoTrigger;
    if (settings.acceleratedCompositingForPluginsEnabled())
        flags |= WebCore::PluginTrigger;
    if (settings.acceleratedCompositingForAnimationEnabled())
        flags |= WebCore::AnimationTrigger;
    if (settings.acceleratedCompositingForCanvasEnabled())
        flags |= WebCore::CanvasTrigger;
    if (settings.acceleratedCompositingForScrollableFramesEnabled())
        flags |= WebCore::ScrollableInnerFrameTrigger;
    if (settings.acceleratedCompositingForFiltersEnabled())
        flags |= WebCore::FilterTrigger;
    if (settings.acceleratedCompositingForGpuRasterizationHintEnabled())
        flags |= WebCore::GPURasterizationTrigger;

    return flags;
}

void ChromeClientImpl::enterFullScreenForElement(Element* element)
{
    m_webView->enterFullScreenForElement(element);
}

void ChromeClientImpl::exitFullScreenForElement(Element* element)
{
    m_webView->exitFullScreenForElement(element);
}

bool ChromeClientImpl::hasOpenedPopup() const
{
    return m_webView->hasOpenedPopup();
}

PassRefPtr<PopupMenu> ChromeClientImpl::createPopupMenu(LocalFrame& frame, PopupMenuClient* client) const
{
    if (WebViewImpl::useExternalPopupMenus())
        return adoptRef(new ExternalPopupMenu(frame, client, *m_webView));

    return adoptRef(new PopupMenuChromium(frame, client));
}

PagePopup* ChromeClientImpl::openPagePopup(PagePopupClient* client, const IntRect& originBoundsInRootView)
{
    ASSERT(m_pagePopupDriver);
    return m_pagePopupDriver->openPagePopup(client, originBoundsInRootView);
}

void ChromeClientImpl::closePagePopup(PagePopup* popup)
{
    ASSERT(m_pagePopupDriver);
    m_pagePopupDriver->closePagePopup(popup);
}

void ChromeClientImpl::setPagePopupDriver(PagePopupDriver* driver)
{
    ASSERT(driver);
    m_pagePopupDriver = driver;
}

void ChromeClientImpl::resetPagePopupDriver()
{
    m_pagePopupDriver = m_webView;
}

bool ChromeClientImpl::isPasswordGenerationEnabled() const
{
    return m_webView->passwordGeneratorClient();
}

void ChromeClientImpl::openPasswordGenerator(HTMLInputElement* input)
{
    ASSERT(isPasswordGenerationEnabled());
    WebInputElement webInput(input);
    m_webView->passwordGeneratorClient()->openPasswordGenerator(webInput);
}

bool ChromeClientImpl::shouldRunModalDialogDuringPageDismissal(const DialogType& dialogType, const String& dialogMessage, Document::PageDismissalType dismissalType) const
{
    const char* kDialogs[] = {"alert", "confirm", "prompt", "showModalDialog"};
    int dialog = static_cast<int>(dialogType);
    ASSERT_WITH_SECURITY_IMPLICATION(0 <= dialog && dialog < static_cast<int>(arraysize(kDialogs)));

    const char* kDismissals[] = {"beforeunload", "pagehide", "unload"};
    int dismissal = static_cast<int>(dismissalType) - 1; // Exclude NoDismissal.
    ASSERT_WITH_SECURITY_IMPLICATION(0 <= dismissal && dismissal < static_cast<int>(arraysize(kDismissals)));

    blink::Platform::current()->histogramEnumeration("Renderer.ModalDialogsDuringPageDismissal", dismissal * arraysize(kDialogs) + dialog, arraysize(kDialogs) * arraysize(kDismissals));

    String message = String("Blocked ") + kDialogs[dialog] + "('" + dialogMessage + "') during " + kDismissals[dismissal] + ".";
    m_webView->mainFrame()->addMessageToConsole(WebConsoleMessage(WebConsoleMessage::LevelError, message));

    return false;
}

bool ChromeClientImpl::shouldRubberBandInDirection(WebCore::ScrollDirection direction) const
{
    ASSERT(direction != WebCore::ScrollUp && direction != WebCore::ScrollDown);

    if (!m_webView->client())
        return false;

    if (direction == WebCore::ScrollLeft)
        return !m_webView->client()->historyBackListCount();
    if (direction == WebCore::ScrollRight)
        return !m_webView->client()->historyForwardListCount();

    ASSERT_NOT_REACHED();
    return true;
}

void ChromeClientImpl::numWheelEventHandlersChanged(unsigned numberOfWheelHandlers)
{
    m_webView->numberOfWheelEventHandlersChanged(numberOfWheelHandlers);
}

void ChromeClientImpl::needTouchEvents(bool needsTouchEvents)
{
    m_webView->hasTouchEventHandlers(needsTouchEvents);
}

void ChromeClientImpl::setTouchAction(TouchAction touchAction)
{
    if (WebViewClient* client = m_webView->client()) {
        WebTouchAction webTouchAction = static_cast<WebTouchAction>(touchAction);
        client->setTouchAction(webTouchAction);
    }
}

bool ChromeClientImpl::requestPointerLock()
{
    return m_webView->requestPointerLock();
}

void ChromeClientImpl::requestPointerUnlock()
{
    return m_webView->requestPointerUnlock();
}

void ChromeClientImpl::annotatedRegionsChanged()
{
    WebViewClient* client = m_webView->client();
    if (client)
        client->draggableRegionsChanged();
}

void ChromeClientImpl::didAssociateFormControls(const Vector<RefPtr<Element> >& elements)
{
    if (!m_webView->autofillClient())
        return;
    WebVector<WebNode> elementVector(static_cast<size_t>(elements.size()));
    size_t elementsCount = elements.size();
    for (size_t i = 0; i < elementsCount; ++i)
        elementVector[i] = elements[i];
    m_webView->autofillClient()->didAssociateFormControls(elementVector);
}

void ChromeClientImpl::didCancelCompositionOnSelectionChange()
{
    if (m_webView->client())
        m_webView->client()->didCancelCompositionOnSelectionChange();
}

void ChromeClientImpl::willSetInputMethodState()
{
    if (m_webView->client())
        m_webView->client()->resetInputMethod();
}

void ChromeClientImpl::handleKeyboardEventOnTextField(HTMLInputElement& inputElement, KeyboardEvent& event)
{
    if (!m_webView->autofillClient())
        return;
    m_webView->autofillClient()->textFieldDidReceiveKeyDown(WebInputElement(&inputElement), WebKeyboardEventBuilder(event));
}

// FIXME: Remove this code once we have input routing in the browser
// process. See http://crbug.com/339659.
void ChromeClientImpl::forwardInputEvent(
    WebCore::Document* document, WebCore::Event* event)
{
    WebFrameImpl* webFrame = WebFrameImpl::fromFrame(document->frame());

    // This is only called when we have out-of-process iframes, which
    // need to forward input events across processes.
    // FIXME: Add a check for out-of-process iframes enabled.
    if (event->isKeyboardEvent()) {
        WebKeyboardEventBuilder webEvent(*static_cast<WebCore::KeyboardEvent*>(event));
        webFrame->client()->forwardInputEvent(&webEvent);
    } else if (event->isMouseEvent()) {
        WebMouseEventBuilder webEvent(webFrame->frameView(), document->renderer(), *static_cast<WebCore::MouseEvent*>(event));
        // Internal Blink events should not be forwarded.
        if (webEvent.type == WebInputEvent::Undefined)
            return;

        webFrame->client()->forwardInputEvent(&webEvent);
    } else if (event->isWheelEvent()) {
        WebMouseWheelEventBuilder webEvent(webFrame->frameView(), document->renderer(), *static_cast<WebCore::WheelEvent*>(event));
        if (webEvent.type == WebInputEvent::Undefined)
            return;
        webFrame->client()->forwardInputEvent(&webEvent);
    }
}

void ChromeClientImpl::didChangeValueInTextField(HTMLFormControlElement& element)
{
    if (!m_webView->autofillClient())
        return;
    m_webView->autofillClient()->textFieldDidChange(WebFormControlElement(&element));
}

void ChromeClientImpl::didEndEditingOnTextField(HTMLInputElement& inputElement)
{
    if (m_webView->autofillClient())
        m_webView->autofillClient()->textFieldDidEndEditing(WebInputElement(&inputElement));
}

void ChromeClientImpl::openTextDataListChooser(HTMLInputElement& input)
{
    if (m_webView->autofillClient())
        m_webView->autofillClient()->openTextDataListChooser(WebInputElement(&input));
}

PassOwnPtr<NavigatorContentUtilsClientImpl> NavigatorContentUtilsClientImpl::create(WebViewImpl* webView)
{
    return adoptPtr(new NavigatorContentUtilsClientImpl(webView));
}

NavigatorContentUtilsClientImpl::NavigatorContentUtilsClientImpl(WebViewImpl* webView)
    : m_webView(webView)
{
}

void NavigatorContentUtilsClientImpl::registerProtocolHandler(const String& scheme, const WebCore::KURL& baseURL, const WebCore::KURL& url, const String& title)
{
    m_webView->client()->registerProtocolHandler(scheme, baseURL, url, title);
}

NavigatorContentUtilsClient::CustomHandlersState NavigatorContentUtilsClientImpl::isProtocolHandlerRegistered(const String& scheme, const WebCore::KURL& baseURL, const WebCore::KURL& url)
{
    return static_cast<NavigatorContentUtilsClient::CustomHandlersState>(m_webView->client()->isProtocolHandlerRegistered(scheme, baseURL, url));
}

void NavigatorContentUtilsClientImpl::unregisterProtocolHandler(const String& scheme, const WebCore::KURL& baseURL, const WebCore::KURL& url)
{
    m_webView->client()->unregisterProtocolHandler(scheme, baseURL, url);
}

} // namespace blink
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root/Source/web/ChromeClientImpl.cpp

DEFINITIONS
