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+/*
+ * Copyright (C) 2011, 2012, 2015 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.
+ */
+
+#ifndef PDFPlugin_h
+#define PDFPlugin_h
+
+#include "PDFKitImports.h"
+
+#if ENABLE(PDFKIT_PLUGIN)
+#if USE(DEPRECATED_PDF_PLUGIN)
+
+#include "DeprecatedPDFPlugin.h"
+
+#else // USE(DEPRECATED_PDF_PLUGIN)
+
+#include "Plugin.h"
+#include "WebEvent.h"
+#include "WebHitTestResultData.h"
+#include <WebCore/AffineTransform.h>
+#include <WebCore/FindOptions.h>
+#include <WebCore/PageOverlay.h>
+#include <WebCore/ScrollableArea.h>
+#include <wtf/RetainPtr.h>
+
+typedef const struct OpaqueJSContext* JSContextRef;
+typedef struct OpaqueJSValue* JSObjectRef;
+typedef const struct OpaqueJSValue* JSValueRef;
+
+OBJC_CLASS NSArray;
+OBJC_CLASS NSAttributedString;
+OBJC_CLASS NSData;
+OBJC_CLASS NSString;
+OBJC_CLASS PDFAnnotation;
+OBJC_CLASS PDFLayerController;
+OBJC_CLASS PDFSelection;
+OBJC_CLASS WKPDFPluginAccessibilityObject;
+OBJC_CLASS WKPDFLayerControllerDelegate;
+
+namespace IPC {
+class DataReference;
+}
+
+namespace WebCore {
+class Element;
+struct PluginInfo;
+}
+
+namespace WebKit {
+
+class PDFPluginAnnotation;
+class PDFPluginPasswordField;
+class PluginView;
+class WebFrame;
+
+class PDFPlugin final : public Plugin {
+public:
+    static Ref<PDFPlugin> create(WebFrame*);
+    ~PDFPlugin();
+
+    static WebCore::PluginInfo pluginInfo();
+
+    WebCore::IntSize size() const { return m_size; }
+    float scaleFactor() const;
+
+    void didMutatePDFDocument() { m_pdfDocumentWasMutated = true; }
+
+    void setActiveAnnotation(PDFAnnotation *);
+
+    void notifyDisplayModeChanged(int);
+
+    void notifySelectionChanged(PDFSelection *);
+
+    void clickedLink(NSURL *);
+    void saveToPDF();
+    void openWithNativeApplication();
+    void writeItemsToPasteboard(NSString *pasteboardName, NSArray *items, NSArray *types);
+    void showDefinitionForAttributedString(NSAttributedString *, CGPoint);
+    void performWebSearch(NSString *);
+    void performSpotlightSearch(NSString *);
+    void invalidatePDFRect(WebCore::IntRect);
+    void invalidateHUD();
+    void scrollToPoint(WebCore::IntPoint);
+
+    void zoomIn();
+    void zoomOut();
+
+    void focusNextAnnotation();
+    void focusPreviousAnnotation();
+
+    void attemptToUnlockPDF(const String& password);
+
+    WebCore::IntPoint convertFromPluginToPDFView(const WebCore::IntPoint&) const;
+    WebCore::IntPoint convertFromRootViewToPlugin(const WebCore::IntPoint&) const;
+    WebCore::IntPoint convertFromPDFViewToRootView(const WebCore::IntPoint&) const;
+
+    WebCore::IntRect convertFromPDFViewToRootView(const WebCore::IntRect&) const;
+    WebCore::FloatRect convertFromPDFViewToScreen(const WebCore::FloatRect&) const;
+
+    WebCore::IntRect boundsOnScreen() const;
+    
+    bool showContextMenuAtPoint(const WebCore::IntPoint&);
+
+    String lookupTextAtLocation(const WebCore::FloatPoint&, WebHitTestResultData&, PDFSelection **, NSDictionary **) const;
+    WebCore::FloatRect rectForSelectionInRootView(PDFSelection *) const;
+
+    PDFLayerController *pdfLayerController() const { return m_pdfLayerController.get(); }
+    WebFrame* webFrame() const { return m_frame; }
+
+    bool isLocked() const;
+
+private:
+    explicit PDFPlugin(WebFrame*);
+
+    // Plugin functions.
+    bool initialize(const Parameters&) override;
+    void destroy() override;
+    void paint(WebCore::GraphicsContext&, const WebCore::IntRect& dirtyRectInWindowCoordinates) override;
+    void updateControlTints(WebCore::GraphicsContext&) override { }
+    bool supportsSnapshotting() const override { return false; }
+    RefPtr<ShareableBitmap> snapshot() override;
+    PlatformLayer* pluginLayer() override { return nullptr; }
+    bool isTransparent() override { return false; }
+    bool wantsWheelEvents() override { return false; }
+    void geometryDidChange(const WebCore::IntSize& pluginSize, const WebCore::IntRect& clipRect, const WebCore::AffineTransform& pluginToRootViewTransform) override;
+    void contentsScaleFactorChanged(float) override { }
+    void visibilityDidChange(bool) override { }
+    void frameDidFinishLoading(uint64_t requestID) override;
+    void frameDidFail(uint64_t requestID, bool wasCancelled) override;
+    void didEvaluateJavaScript(uint64_t requestID, const String& result) override;
+    void streamWillSendRequest(uint64_t streamID, const WebCore::URL& requestURL, const WebCore::URL& responseURL, int responseStatus) override { }
+    void streamDidReceiveResponse(uint64_t streamID, const WebCore::URL& responseURL, uint32_t streamLength, uint32_t lastModifiedTime, const String& mimeType, const String& headers, const String& suggestedFileName) override;
+    void streamDidReceiveData(uint64_t streamID, const char* bytes, int length) override;
+    void streamDidFinishLoading(uint64_t streamID) override;
+    void streamDidFail(uint64_t streamID, bool wasCancelled) override;
+    void manualStreamDidReceiveResponse(const WebCore::URL& responseURL, uint32_t streamLength, uint32_t lastModifiedTime, const WTF::String& mimeType, const WTF::String& headers, const String& suggestedFileName) override;
+    void manualStreamDidReceiveData(const char* bytes, int length) override;
+    void manualStreamDidFinishLoading() override;
+    void manualStreamDidFail(bool wasCancelled) override;
+    bool handleMouseEvent(const WebMouseEvent&) override;
+    bool handleWheelEvent(const WebWheelEvent&) override { return false; }
+    bool handleMouseEnterEvent(const WebMouseEvent&) override;
+    bool handleMouseLeaveEvent(const WebMouseEvent&) override;
+    bool handleContextMenuEvent(const WebMouseEvent&) override;
+    bool handleKeyboardEvent(const WebKeyboardEvent&) override { return false; }
+    bool handleEditingCommand(const String& commandName, const String& argument) override;
+    bool isEditingCommandEnabled(const String&) override;
+    void setFocus(bool) override { }
+    NPObject* pluginScriptableNPObject() override { return nullptr; }
+    void windowFocusChanged(bool) override { }
+    void windowAndViewFramesChanged(const WebCore::IntRect& windowFrameInScreenCoordinates, const WebCore::IntRect& viewFrameInWindowCoordinates) override { }
+    void windowVisibilityChanged(bool) override { }
+    uint64_t pluginComplexTextInputIdentifier() const override { return 0; }
+    void sendComplexTextInput(const String& textInput) override { }
+    void setLayerHostingMode(LayerHostingMode) override { }
+    WebCore::Scrollbar* horizontalScrollbar() override { return nullptr; }
+    WebCore::Scrollbar* verticalScrollbar() override { return nullptr; }
+    void storageBlockingStateChanged(bool) override { }
+    void privateBrowsingStateChanged(bool) override { }
+    bool getFormValue(String& formValue) override { return false; }
+    bool handleScroll(WebCore::ScrollDirection, WebCore::ScrollGranularity) override { return false; }
+    RefPtr<WebCore::SharedBuffer> liveResourceData() const override;
+
+    bool handlesPageScaleFactor() const override { return false; }
+    bool requiresUnifiedScaleFactor() const override { return true; }
+
+    bool isBeingAsynchronouslyInitialized() const override { return false; }
+
+    RetainPtr<PDFDocument> pdfDocumentForPrinting() const override { return m_pdfDocument; }
+    NSObject *accessibilityObject() const override;
+
+    unsigned countFindMatches(const String& target, WebCore::FindOptions, unsigned maxMatchCount) override;
+    bool findString(const String& target, WebCore::FindOptions, unsigned maxMatchCount) override;
+
+    PDFSelection *nextMatchForString(const String& target, BOOL searchForward, BOOL caseSensitive, BOOL wrapSearch, PDFSelection *initialSelection, BOOL startInSelection);
+
+    bool performDictionaryLookupAtLocation(const WebCore::FloatPoint&) override;
+    String getSelectionString() const override;
+    String getSelectionForWordAtPoint(const WebCore::FloatPoint&) const override;
+    bool existingSelectionContainsPoint(const WebCore::FloatPoint&) const override;
+
+    bool shouldAllowScripting() override { return false; }
+    bool shouldAllowNavigationFromDrags() override { return true; }
+    bool shouldAlwaysAutoStart() const override { return true; }
+    bool canCreateTransientPaintingSnapshot() const override { return false; }
+
+    // PDFPlugin functions.
+    void pdfDocumentDidLoad();
+    void addArchiveResource();
+    void computePageBoxes();
+    void calculateSizes();
+    void didCalculateSizes();
+    void runScriptsInPDFDocument();
+
+    NSEvent *nsEventForWebMouseEvent(const WebMouseEvent&);
+
+    bool supportsForms();
+    bool isFullFramePlugin() const;
+
+    void createPasswordEntryForm();
+
+    RetainPtr<PDFDocument> pdfDocument() const { return m_pdfDocument; }
+    void setPDFDocument(RetainPtr<PDFDocument> document) { m_pdfDocument = document; }
+
+    WebCore::IntSize pdfDocumentSize() const { return m_pdfDocumentSize; }
+    void setPDFDocumentSize(WebCore::IntSize size) { m_pdfDocumentSize = size; }
+
+    NSData *liveData() const;
+    NSData *rawData() const { return (NSData *)m_data.get(); }
+
+    enum class UpdateCursor {
+        IfNeeded,
+        Force
+    };
+
+    enum class HitTestResult {
+        None,
+        Text,
+        HUD
+    };
+
+    void updateCursor(const WebMouseEvent&, UpdateCursor = UpdateCursor::IfNeeded);
+
+    JSObjectRef makeJSPDFDoc(JSContextRef);
+    static JSValueRef jsPDFDocPrint(JSContextRef, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception);
+
+    void convertPostScriptDataIfNeeded();
+
+    PluginView* pluginView();
+    const PluginView* pluginView() const;
+
+    class HUD : public WebCore::PageOverlay::Client {
+    public:
+        explicit HUD(PDFPlugin& plugin);
+        virtual ~HUD();
+
+        void invalidate();
+        bool containsPointInRootView(WebCore::IntPoint);
+
+        enum class AnimateVisibilityTransition { No, Yes };
+        void setVisible(bool, AnimateVisibilityTransition);
+
+    private:
+        void willMoveToPage(WebCore::PageOverlay&, WebCore::Page*) override;
+        void didMoveToPage(WebCore::PageOverlay&, WebCore::Page*) override;
+        void drawRect(WebCore::PageOverlay&, WebCore::GraphicsContext&, const WebCore::IntRect& dirtyRect) override;
+        bool mouseEvent(WebCore::PageOverlay&, const WebCore::PlatformMouseEvent&) override;
+
+        WebCore::IntRect frameInRootView() const;
+
+        bool m_visible { false };
+        Ref<WebCore::PageOverlay> m_overlay;
+        PDFPlugin& m_plugin;
+    };
+
+    WebFrame* m_frame;
+
+    bool m_isPostScript { false };
+    bool m_pdfDocumentWasMutated { false };
+    bool m_usingContinuousMode { true };
+
+    RetainPtr<PDFLayerController> m_pdfLayerController;
+    RetainPtr<WKPDFPluginAccessibilityObject> m_accessibilityObject;
+
+    RefPtr<PDFPluginAnnotation> m_activeAnnotation;
+    RefPtr<PDFPluginPasswordField> m_passwordField;
+    RefPtr<WebCore::Element> m_passwordContainer;
+
+    WebCore::AffineTransform m_rootViewToPluginTransform;
+    WebCore::AffineTransform m_pluginToRootViewTransform;
+    WebMouseEvent m_lastMouseEvent;
+    WebCore::IntPoint m_lastMousePositionInPluginCoordinates;
+
+    String m_temporaryPDFUUID;
+
+    String m_lastFoundString;
+
+    HitTestResult m_lastHitTestResult;
+    
+    RetainPtr<WKPDFLayerControllerDelegate> m_pdfLayerControllerDelegate;
+
+    WebCore::IntSize m_size;
+
+    WebCore::URL m_sourceURL;
+
+    String m_suggestedFilename;
+    RetainPtr<CFMutableDataRef> m_data;
+
+    RetainPtr<PDFDocument> m_pdfDocument;
+    WebCore::IntSize m_pdfDocumentSize; // All pages, including gaps.
+
+    HUD m_HUD;
+};
+
+} // namespace WebKit
+
+SPECIALIZE_TYPE_TRAITS_PLUGIN(PDFPlugin, PDFPluginType)
+
+#endif // USE(DEPRECATED_PDF_PLUGIN)
+#endif // ENABLE(PDFKIT_PLUGIN)
+
+#endif // PDFPlugin_h