/*
 * Copyright (C) 2012 Apple 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:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
 */

#import "config.h"
#import "WebPageProxy.h"

#if PLATFORM(IOS)

#import "APIUIClient.h"
#import "DataReference.h"
#import "EditingRange.h"
#import "NativeWebKeyboardEvent.h"
#import "PageClient.h"
#import "RemoteLayerTreeTransaction.h"
#import "ViewUpdateDispatcherMessages.h"
#import "WKBrowsingContextControllerInternal.h"
#import "WebContextUserMessageCoders.h"
#import "WebKitSystemInterfaceIOS.h"
#import "WebPageMessages.h"
#import "WebProcessProxy.h"
#import "WebVideoFullscreenManagerProxy.h"
#import <WebCore/NotImplemented.h>
#import <WebCore/SharedBuffer.h>
#import <WebCore/UserAgent.h>

#if USE(QUICK_LOOK)
#import "APILoaderClient.h"
#import <wtf/text/WTFString.h>
#endif

using namespace WebCore;

namespace WebKit {

void WebPageProxy::platformInitialize()
{
}

static String userVisibleWebKitVersionString()
{
    // If the version is longer than 3 digits then the leading digits represent the version of the OS. Our user agent
    // string should not include the leading digits, so strip them off and report the rest as the version. <rdar://problem/4997547>
    NSString *fullVersion = [[NSBundle bundleForClass:NSClassFromString(@"WKView")] objectForInfoDictionaryKey:(NSString *)kCFBundleVersionKey];
    NSRange nonDigitRange = [fullVersion rangeOfCharacterFromSet:[[NSCharacterSet decimalDigitCharacterSet] invertedSet]];
    if (nonDigitRange.location == NSNotFound && fullVersion.length > 3)
        return [fullVersion substringFromIndex:fullVersion.length - 3];
    if (nonDigitRange.location != NSNotFound && nonDigitRange.location > 3)
        return [fullVersion substringFromIndex:nonDigitRange.location - 3];
    return fullVersion;
}

String WebPageProxy::standardUserAgent(const String& applicationName)
{
    return standardUserAgentWithApplicationName(applicationName, userVisibleWebKitVersionString());
}

void WebPageProxy::getIsSpeaking(bool&)
{
    notImplemented();
}

void WebPageProxy::speak(const String&)
{
    notImplemented();
}

void WebPageProxy::stopSpeaking()
{
    notImplemented();
}

void WebPageProxy::searchWithSpotlight(const String&)
{
    notImplemented();
}

void WebPageProxy::searchTheWeb(const String&)
{
    notImplemented();
}

void WebPageProxy::windowAndViewFramesChanged(const FloatRect&, const FloatPoint&)
{
    notImplemented();
}

String WebPageProxy::stringSelectionForPasteboard()
{
    notImplemented();
    return String();
}

PassRefPtr<WebCore::SharedBuffer> WebPageProxy::dataSelectionForPasteboard(const String&)
{
    notImplemented();
    return 0;
}

bool WebPageProxy::readSelectionFromPasteboard(const String&)
{
    notImplemented();
    return false;
}

void WebPageProxy::performDictionaryLookupAtLocation(const WebCore::FloatPoint&)
{
    notImplemented();
}

void WebPageProxy::gestureCallback(const WebCore::IntPoint& point, uint32_t gestureType, uint32_t gestureState, uint32_t flags, uint64_t callbackID)
{
    RefPtr<GestureCallback> callback = m_gestureCallbacks.take(callbackID);
    if (!callback) {
        ASSERT_NOT_REACHED();
        return;
    }
    
    callback->performCallbackWithReturnValue(point, gestureType, gestureState, flags);
}

void WebPageProxy::touchesCallback(const WebCore::IntPoint& point, uint32_t touches, uint64_t callbackID)
{
    RefPtr<TouchesCallback> callback = m_touchesCallbacks.take(callbackID);
    if (!callback) {
        ASSERT_NOT_REACHED();
        return;
    }

    callback->performCallbackWithReturnValue(point, touches);
}

void WebPageProxy::autocorrectionDataCallback(const Vector<WebCore::FloatRect>& rects, const String& fontName, float fontSize, uint64_t fontTraits, uint64_t callbackID)
{
    RefPtr<AutocorrectionDataCallback> callback = m_autocorrectionCallbacks.take(callbackID);
    if (!callback) {
        ASSERT_NOT_REACHED();
        return;
    }

    callback->performCallbackWithReturnValue(rects, fontName, fontSize, fontTraits);
}

void WebPageProxy::dictationContextCallback(const String& selectedText, const String& beforeText, const String& afterText, uint64_t callbackID)
{
    RefPtr<DictationContextCallback> callback = m_dictationContextCallbacks.take(callbackID);
    if (!callback) {
        ASSERT_NOT_REACHED();
        return;
    }

    callback->performCallbackWithReturnValue(selectedText, beforeText, afterText);
}

void WebPageProxy::autocorrectionContextCallback(const String& beforeText, const String& markedText, const String& selectedText, const String& afterText, uint64_t location, uint64_t length, uint64_t callbackID)
{
    RefPtr<AutocorrectionContextCallback> callback = m_autocorrectionContextCallbacks.take(callbackID);
    if (!callback) {
        ASSERT_NOT_REACHED();
        return;
    }

    callback->performCallbackWithReturnValue(beforeText, markedText, selectedText, afterText, location, length);
}

bool WebPageProxy::updateVisibleContentRects(const VisibleContentRectUpdateInfo& visibleContentRectUpdateInfo)
{
    if (visibleContentRectUpdateInfo == m_lastVisibleContentRectUpdate)
        return false;

    m_lastVisibleContentRectUpdate = visibleContentRectUpdateInfo;
    m_process->send(Messages::ViewUpdateDispatcher::VisibleContentRectUpdate(m_pageID, visibleContentRectUpdateInfo), 0);
    return true;
}

void WebPageProxy::dynamicViewportSizeUpdate(const FloatSize& minimumLayoutSize, const FloatRect& targetExposedContentRect, const FloatRect& targetUnobscuredRect, double targetScale)
{
    m_process->send(Messages::WebPage::DynamicViewportSizeUpdate(minimumLayoutSize, targetExposedContentRect, targetUnobscuredRect, targetScale), m_pageID);
}

void WebPageProxy::setViewportConfigurationMinimumLayoutSize(const WebCore::FloatSize& size)
{
    m_process->send(Messages::WebPage::SetViewportConfigurationMinimumLayoutSize(size), m_pageID);
}

void WebPageProxy::setMinimumLayoutSizeForMinimalUI(const WebCore::FloatSize& size)
{
    m_process->send(Messages::WebPage::SetMinimumLayoutSizeForMinimalUI(size), m_pageID);
}

void WebPageProxy::didCommitLayerTree(const WebKit::RemoteLayerTreeTransaction& layerTreeTransaction)
{
    m_pageExtendedBackgroundColor = layerTreeTransaction.pageExtendedBackgroundColor();

    m_pageClient.didCommitLayerTree(layerTreeTransaction);
}

void WebPageProxy::selectWithGesture(const WebCore::IntPoint point, WebCore::TextGranularity granularity, uint32_t gestureType, uint32_t gestureState, PassRefPtr<GestureCallback> callback)
{
    if (!isValid()) {
        callback->invalidate();
        return;
    }
    
    uint64_t callbackID = callback->callbackID();
    m_gestureCallbacks.set(callbackID, callback);
    m_process->send(Messages::WebPage::SelectWithGesture(point, (uint32_t)granularity, gestureType, gestureState, callbackID), m_pageID);
}

void WebPageProxy::updateSelectionWithTouches(const WebCore::IntPoint point, uint32_t touches, bool baseIsStart, PassRefPtr<TouchesCallback> callback)
{
    if (!isValid()) {
        callback->invalidate();
        return;
    }

    uint64_t callbackID = callback->callbackID();
    m_touchesCallbacks.set(callbackID, callback);
    m_process->send(Messages::WebPage::UpdateSelectionWithTouches(point, touches, baseIsStart, callbackID), m_pageID);
}
    
void WebPageProxy::replaceDictatedText(const String& oldText, const String& newText)
{
    m_process->send(Messages::WebPage::ReplaceDictatedText(oldText, newText), m_pageID);
}

void WebPageProxy::replaceSelectedText(const String& oldText, const String& newText)
{
    m_process->send(Messages::WebPage::ReplaceSelectedText(oldText, newText), m_pageID);
}

void WebPageProxy::requestAutocorrectionData(const String& textForAutocorrection, PassRefPtr<AutocorrectionDataCallback> callback)
{
    if (!isValid()) {
        callback->invalidate();
        return;
    }

    uint64_t callbackID = callback->callbackID();
    m_autocorrectionCallbacks.set(callbackID, callback);
    m_process->send(Messages::WebPage::RequestAutocorrectionData(textForAutocorrection, callbackID), m_pageID);
}

void WebPageProxy::applyAutocorrection(const String& correction, const String& originalText, PassRefPtr<StringCallback> callback)
{
    if (!isValid()) {
        callback->invalidate();
        return;
    }

    uint64_t callbackID = callback->callbackID();
    m_stringCallbacks.set(callbackID, callback);
    m_process->send(Messages::WebPage::ApplyAutocorrection(correction, originalText, callbackID), m_pageID);
}

bool WebPageProxy::applyAutocorrection(const String& correction, const String& originalText)
{
    bool autocorrectionApplied = false;
    m_process->sendSync(Messages::WebPage::SyncApplyAutocorrection(correction, originalText), Messages::WebPage::SyncApplyAutocorrection::Reply(autocorrectionApplied), m_pageID);
    return autocorrectionApplied;
}

void WebPageProxy::requestDictationContext(PassRefPtr<DictationContextCallback> callback)
{
    if (!isValid()) {
        callback->invalidate();
        return;
    }

    uint64_t callbackID = callback->callbackID();
    m_dictationContextCallbacks.set(callbackID, callback);
    m_process->send(Messages::WebPage::RequestDictationContext(callbackID), m_pageID);
}

void WebPageProxy::requestAutocorrectionContext(PassRefPtr<AutocorrectionContextCallback> callback)
{
    if (!isValid()) {
        callback->invalidate();
        return;
    }

    uint64_t callbackID = callback->callbackID();
    m_autocorrectionContextCallbacks.set(callbackID, callback);
    m_process->send(Messages::WebPage::RequestAutocorrectionContext(callbackID), m_pageID);
}

void WebPageProxy::getAutocorrectionContext(String& beforeContext, String& markedText, String& selectedText, String& afterContext, uint64_t& location, uint64_t& length)
{
    m_process->sendSync(Messages::WebPage::GetAutocorrectionContext(), Messages::WebPage::GetAutocorrectionContext::Reply(beforeContext, markedText, selectedText, afterContext, location, length), m_pageID);
}

void WebPageProxy::selectWithTwoTouches(const WebCore::IntPoint from, const WebCore::IntPoint to, uint32_t gestureType, uint32_t gestureState, PassRefPtr<GestureCallback> callback)
{
    if (!isValid()) {
        callback->invalidate();
        return;
    }

    uint64_t callbackID = callback->callbackID();
    m_gestureCallbacks.set(callbackID, callback);
    m_process->send(Messages::WebPage::SelectWithTwoTouches(from, to, gestureType, gestureState, callbackID), m_pageID);
}

void WebPageProxy::updateBlockSelectionWithTouch(const WebCore::IntPoint point, uint32_t touch, uint32_t handlePosition)
{
    m_process->send(Messages::WebPage::UpdateBlockSelectionWithTouch(point, touch, handlePosition), m_pageID);
}

void WebPageProxy::didReceivePositionInformation(const InteractionInformationAtPosition& info)
{
    m_pageClient.positionInformationDidChange(info);
}

void WebPageProxy::getPositionInformation(const WebCore::IntPoint& point, InteractionInformationAtPosition& info)
{
    m_process->sendSync(Messages::WebPage::GetPositionInformation(point), Messages::WebPage::GetPositionInformation::Reply(info), m_pageID);
}

void WebPageProxy::requestPositionInformation(const WebCore::IntPoint& point)
{
    m_process->send(Messages::WebPage::RequestPositionInformation(point), m_pageID);
}

void WebPageProxy::startInteractionWithElementAtPosition(const WebCore::IntPoint& point)
{
    m_process->send(Messages::WebPage::StartInteractionWithElementAtPosition(point), m_pageID);
}

void WebPageProxy::stopInteraction()
{
    m_process->send(Messages::WebPage::StopInteraction(), m_pageID);
}

void WebPageProxy::performActionOnElement(uint32_t action)
{
    m_process->send(Messages::WebPage::PerformActionOnElement(action), m_pageID);
}

void WebPageProxy::saveImageToLibrary(const SharedMemory::Handle& imageHandle, uint64_t imageSize)
{
    RefPtr<SharedMemory> sharedMemoryBuffer = SharedMemory::create(imageHandle, SharedMemory::ReadOnly);
    RefPtr<SharedBuffer> buffer = SharedBuffer::create(static_cast<unsigned char*>(sharedMemoryBuffer->data()), imageSize);
    m_pageClient.saveImageToLibrary(buffer);
}

void WebPageProxy::didUpdateBlockSelectionWithTouch(uint32_t touch, uint32_t flags, float growThreshold, float shrinkThreshold)
{
    m_pageClient.didUpdateBlockSelectionWithTouch(touch, flags, growThreshold, shrinkThreshold);
}

void WebPageProxy::applicationWillEnterForeground()
{
    m_process->send(Messages::WebPage::ApplicationWillEnterForeground(), m_pageID);
}

void WebPageProxy::applicationWillResignActive()
{
    m_process->send(Messages::WebPage::ApplicationWillResignActive(), m_pageID);
}

void WebPageProxy::applicationDidBecomeActive()
{
    m_process->send(Messages::WebPage::ApplicationDidBecomeActive(), m_pageID);
}

void WebPageProxy::notifyRevealedSelection()
{
    m_pageClient.selectionDidChange();
}

void WebPageProxy::extendSelection(WebCore::TextGranularity granularity)
{
    m_process->send(Messages::WebPage::ExtendSelection(static_cast<uint32_t>(granularity)), m_pageID);
}

void WebPageProxy::interpretKeyEvent(const EditorState& state, bool isCharEvent, bool& handled)
{
    m_editorState = state;
    handled = m_pageClient.interpretKeyEvent(m_keyEventQueue.first(), isCharEvent);
}

// Complex text input support for plug-ins.
void WebPageProxy::sendComplexTextInputToPlugin(uint64_t, const String&)
{
    notImplemented();
}

void WebPageProxy::setSmartInsertDeleteEnabled(bool)
{
    notImplemented();
}

void WebPageProxy::registerWebProcessAccessibilityToken(const IPC::DataReference& data)
{
    m_pageClient.accessibilityWebProcessTokenReceived(data);
}    

void WebPageProxy::makeFirstResponder()
{
    notImplemented();
}

void WebPageProxy::registerUIProcessAccessibilityTokens(const IPC::DataReference& elementToken, const IPC::DataReference& windowToken)
{
    if (!isValid())
        return;
    
    process().send(Messages::WebPage::RegisterUIProcessAccessibilityTokens(elementToken, windowToken), m_pageID);
}

void WebPageProxy::pluginFocusOrWindowFocusChanged(uint64_t, bool)
{
    notImplemented();
}

void WebPageProxy::setPluginComplexTextInputState(uint64_t, uint64_t)
{
    notImplemented();
}

void WebPageProxy::executeSavedCommandBySelector(const String&, bool&)
{
    notImplemented();
}

bool WebPageProxy::shouldDelayWindowOrderingForEvent(const WebKit::WebMouseEvent&)
{
    notImplemented();
    return false;
}

bool WebPageProxy::acceptsFirstMouse(int, const WebKit::WebMouseEvent&)
{
    notImplemented();
    return false;
}

void WebPageProxy::willStartUserTriggeredZooming()
{
    process().send(Messages::WebPage::WillStartUserTriggeredZooming(), m_pageID);
}

void WebPageProxy::potentialTapAtPosition(const WebCore::FloatPoint& position, uint64_t& requestID)
{
    process().send(Messages::WebPage::PotentialTapAtPosition(requestID, position), m_pageID);
}

void WebPageProxy::commitPotentialTap()
{
    process().send(Messages::WebPage::CommitPotentialTap(), m_pageID);
}

void WebPageProxy::cancelPotentialTap()
{
    process().send(Messages::WebPage::CancelPotentialTap(), m_pageID);
}

void WebPageProxy::tapHighlightAtPosition(const WebCore::FloatPoint& position, uint64_t& requestID)
{
    process().send(Messages::WebPage::TapHighlightAtPosition(requestID, position), m_pageID);
}

void WebPageProxy::blurAssistedNode()
{
    process().send(Messages::WebPage::BlurAssistedNode(), m_pageID);
}

FloatSize WebPageProxy::screenSize()
{
    return FloatSize(WKGetScreenSize());
}

FloatSize WebPageProxy::availableScreenSize()
{
    return FloatSize(WKGetAvailableScreenSize());
}
    
float WebPageProxy::textAutosizingWidth()
{
    return WKGetScreenSize().width;
}
    
void WebPageProxy::dynamicViewportUpdateChangedTarget(double newScale, const WebCore::FloatPoint& newScrollPosition)
{
    m_pageClient.dynamicViewportUpdateChangedTarget(newScale, newScrollPosition);
}

void WebPageProxy::didGetTapHighlightGeometries(uint64_t requestID, const WebCore::Color& color, const Vector<WebCore::FloatQuad>& highlightedQuads, const WebCore::IntSize& topLeftRadius, const WebCore::IntSize& topRightRadius, const WebCore::IntSize& bottomLeftRadius, const WebCore::IntSize& bottomRightRadius)
{
    m_pageClient.didGetTapHighlightGeometries(requestID, color, highlightedQuads, topLeftRadius, topRightRadius, bottomLeftRadius, bottomRightRadius);
}

void WebPageProxy::startAssistingNode(const AssistedNodeInformation& information, bool userIsInteracting, IPC::MessageDecoder& decoder)
{
    RefPtr<API::Object> userData;
    WebContextUserMessageDecoder messageDecoder(userData, process());
    if (!decoder.decode(messageDecoder))
        return;

    m_pageClient.startAssistingNode(information, userIsInteracting, userData.get());
}

void WebPageProxy::stopAssistingNode()
{
    m_pageClient.stopAssistingNode();
}

#if ENABLE(INSPECTOR)
void WebPageProxy::showInspectorIndication()
{
    m_pageClient.showInspectorIndication();
}

void WebPageProxy::hideInspectorIndication()
{
    m_pageClient.hideInspectorIndication();
}
#endif

void WebPageProxy::focusNextAssistedNode(bool isForward)
{
    process().send(Messages::WebPage::FocusNextAssistedNode(isForward), m_pageID);
}

void WebPageProxy::setAssistedNodeValue(const String& value)
{
    process().send(Messages::WebPage::SetAssistedNodeValue(value), m_pageID);
}

void WebPageProxy::setAssistedNodeValueAsNumber(double value)
{
    process().send(Messages::WebPage::SetAssistedNodeValueAsNumber(value), m_pageID);
}

void WebPageProxy::setAssistedNodeSelectedIndex(uint32_t index, bool allowMultipleSelection)
{
    process().send(Messages::WebPage::SetAssistedNodeSelectedIndex(index, allowMultipleSelection), m_pageID);
}

void WebPageProxy::didPerformDictionaryLookup(const AttributedString&, const DictionaryPopupInfo&)
{
    notImplemented();
}

void WebPageProxy::savePDFToTemporaryFolderAndOpenWithNativeApplication(const String&, const String&, const IPC::DataReference&, const String&)
{
    notImplemented();
}

void WebPageProxy::savePDFToTemporaryFolderAndOpenWithNativeApplicationRaw(const String&, const String&, const uint8_t*, unsigned long, const String&)
{
    notImplemented();
}

void WebPageProxy::openPDFFromTemporaryFolderWithNativeApplication(const String&)
{
    notImplemented();
}

void WebPageProxy::setAcceleratedCompositingRootLayer(LayerOrView* rootLayer)
{
    m_pageClient.setAcceleratedCompositingRootLayer(rootLayer);
}

void WebPageProxy::showPlaybackTargetPicker(bool hasVideo, const IntRect& elementRect)
{
    m_pageClient.showPlaybackTargetPicker(hasVideo, elementRect);
}

void WebPageProxy::zoomToRect(FloatRect rect, double minimumScale, double maximumScale)
{
    m_pageClient.zoomToRect(rect, minimumScale, maximumScale);
}

void WebPageProxy::commitPotentialTapFailed()
{
    m_pageClient.commitPotentialTapFailed();
}

void WebPageProxy::didNotHandleTapAsClick(const WebCore::IntPoint& point)
{
    m_uiClient->didNotHandleTapAsClick(point);
}

#if USE(QUICK_LOOK)
    
void WebPageProxy::didStartLoadForQuickLookDocumentInMainFrame(const String& fileName, const String& uti)
{
    // Ensure that fileName isn't really a path name
    static_assert(notFound + 1 == 0, "The following line assumes WTF::notFound equals -1");
    m_loaderClient->didStartLoadForQuickLookDocumentInMainFrame(fileName.substring(fileName.reverseFind('/') + 1), uti);
}

void WebPageProxy::didFinishLoadForQuickLookDocumentInMainFrame(const QuickLookDocumentData& data)
{
    m_loaderClient->didFinishLoadForQuickLookDocumentInMainFrame(data);
}
#endif

} // namespace WebKit

#endif // PLATFORM(IOS)