WinWebDiffLib.h

#pragma once

#include <windef.h>
#include <wtypes.h>
#include <Unknwn.h>

struct WebDiffEvent
{
	enum EVENT_TYPE { ZoomFactorChanged, NewWindowRequested, WindowCloseRequested, NavigationStarting, FrameNavigationStarting, HistoryChanged, SourceChanged, DocumentTitleChanged, NavigationCompleted, FrameNavigationCompleted, WebMessageReceived, FrameWebMessageReceived, GoBacked, GoForwarded, TabChanged, HSCROLL, VSCROLL, CompareStateChanged, CompareScreenshotsSelected, CompareFullsizeScreenshotsSelected, CompareHTMLsSelected, CompareTextsSelected, CompareResourceTreesSelected, DiffSelected };
	EVENT_TYPE type;
	int pane;
};

struct WebDiffCallbackResult
{
	HRESULT errorCode;
	const wchar_t* returnObjectAsJson;
};

struct __declspec(uuid("{DC951F69-C8CA-44DD-8C3C-8A9C76B0022C}")) IWebDiffCallback : IUnknown
{
	virtual HRESULT __stdcall Invoke(const WebDiffCallbackResult& result) = 0;
};

struct __declspec(uuid("{0C75D925-378C-46E2-A5AA-228133AD22EB}")) IWebDiffEventHandler: IUnknown
{
	virtual HRESULT __stdcall Invoke(const WebDiffEvent& event) = 0;
};

struct IWebDiffWindow
{
	enum UserdataFolderType
	{
		APPDATA, INSTALL
	};
	enum FormatType
	{
		SCREENSHOT, FULLSIZE_SCREENSHOT, HTML, TEXT, RESOURCETREE, PDF
	};
	enum BrowsingDataType
	{
		FILE_SYSTEMS        = ( 1 << 0 ),
		INDEXED_DB          = ( 1 << 1 ),
		LOCAL_STORAGE       = ( 1 << 2 ),
		WEB_SQL             = ( 1 << 3 ),
		CACHE_STORAGE       = ( 1 << 4 ),
		ALL_DOM_STORAGE     = ( 1 << 5 ),
		COOKIES             = ( 1 << 6 ),
		ALL_SITE            = ( 1 << 7 ),
		DISK_CACHE          = ( 1 << 8 ),
		DOWNLOAD_HISTORY    = ( 1 << 9 ),
		GENERAL_AUTOFILL    = ( 1 << 10 ),
		PASSWORD_AUTOSAVE   = ( 1 << 11 ),
		BROWSING_HISTORY    = ( 1 << 12 ),
		SETTINGS            = ( 1 << 13 ),
		ALL_PROFILE         = ( 1 << 14 ) 
	};
	enum EventType
	{
		EVENT_NONE          = 0,
		EVENT_SCROLL        = ( 1 << 0 ),
		EVENT_CLICK         = ( 1 << 1 ),
		EVENT_INPUT         = ( 1 << 2 ),
		EVENT_GOBACKFORWARD = ( 1 << 3 ),
	};
	enum CompareState
	{
		NOT_COMPARED,
		COMPARING,
		COMPARED,
	};
	enum class LogLevel : int { ERR, WARN, INFO };

	struct DiffOptions
	{
		enum DiffAlgorithm {
			MYERS_DIFF, MINIMAL_DIFF, PATIENCE_DIFF, HISTOGRAM_DIFF, NONE_DIFF
		};
		int  ignoreWhitespace; /**< Ignore whitespace -option. */
		bool ignoreCase; /**< Ignore case -option. */
		bool ignoreNumbers; /**< Ignore numbers -option. */
		bool ignoreBlankLines; /**< Ignore blank lines -option. */
		bool ignoreEol; /**< Ignore EOL differences -option. */
		bool bFilterCommentsLines; /**< Ignore Multiline comments differences -option. */
		int  diffAlgorithm; /**< Diff algorithm -option. */
		bool indentHeuristic; /**< Ident heuristic -option */
		bool completelyBlankOutIgnoredChanges;
		bool ignoreEOLNewlinePresence;
	};
	struct ColorSettings
	{
		COLORREF	clrDiff;			/**< Difference color */
		COLORREF	clrDiffDeleted;		/**< Difference deleted color */
		COLORREF	clrDiffText;		/**< Difference text color */
		COLORREF	clrSelDiff;			/**< Selected difference color */
		COLORREF	clrSelDiffDeleted;	/**< Selected difference deleted color */
		COLORREF	clrSelDiffText;		/**< Selected difference text color */
		COLORREF	clrTrivial;			/**< Ignored difference color */
		COLORREF	clrTrivialDeleted;	/**< Ignored difference deleted color */
		COLORREF	clrTrivialText;		/**< Ignored difference text color */
		COLORREF	clrMoved;			/**< Moved block color */
		COLORREF	clrMovedDeleted;	/**< Moved block deleted color */
		COLORREF	clrMovedText;		/**< Moved block text color */
		COLORREF	clrSelMoved;		/**< Selected moved block color */
		COLORREF	clrSelMovedDeleted;	/**< Selected moved block deleted color */
		COLORREF	clrSelMovedText;	/**< Selected moved block text color */
		COLORREF	clrSNP;				/**< SNP block color */
		COLORREF	clrSNPDeleted;		/**< SNP block deleted color */
		COLORREF	clrSNPText;			/**< SNP block text color */
		COLORREF	clrSelSNP;			/**< Selected SNP block color */
		COLORREF	clrSelSNPDeleted;	/**< Selected SNP block deleted color */
		COLORREF	clrSelSNPText;		/**< Selected SNP block text color */
		COLORREF	clrWordDiff;		/**< Word difference color */
		COLORREF	clrWordDiffDeleted;	/**< Word differenceDeleted color */
		COLORREF	clrWordDiffText;	/**< Word difference text color */
		COLORREF	clrSelWordDiff;		/**< Selected word difference color */
		COLORREF	clrSelWordDiffDeleted;	/**< Selected word difference deleted color */
		COLORREF	clrSelWordDiffText;	/**< Selected word difference text color */
	};
	using LogCallback = void(*)(LogLevel level, const wchar_t *msg);

	virtual bool IsWebView2Installed() const = 0;
	virtual bool DownloadWebView2() const = 0;
	virtual void AddEventListener(IWebDiffEventHandler *handler) = 0;
	virtual void SetUserDataFolderType(UserdataFolderType userDataFolderType, bool perPane) = 0;
	virtual HRESULT New(int nUrls, IWebDiffCallback* callback) = 0;
	virtual HRESULT Open(const wchar_t* url1, const wchar_t* url2, IWebDiffCallback* callback) = 0;
	virtual HRESULT Open(const wchar_t* url1, const wchar_t* url2, const wchar_t* url3, IWebDiffCallback* callback) = 0;
	virtual void Close() = 0;
	virtual void NewTab(int pane, const wchar_t *url, IWebDiffCallback* callback) = 0;
	virtual void CloseActiveTab(int pane) = 0;
	virtual HRESULT Reload(int pane) = 0;
	virtual HRESULT ReloadAll() = 0;
	virtual HRESULT Recompare(IWebDiffCallback* callback) = 0;
	virtual HRESULT SaveFile(int pane, FormatType kind, const wchar_t* filename, IWebDiffCallback* callback) = 0;
	virtual HRESULT SaveFiles(FormatType kind, const wchar_t* filenames[], IWebDiffCallback* callback) = 0;
	virtual HRESULT SaveDiffFiles(FormatType kind, const wchar_t* filenames[], IWebDiffCallback* callback) = 0;
	virtual HRESULT ClearBrowsingData(int pane, BrowsingDataType datakinds) = 0;
	virtual const wchar_t *GetCurrentUrl(int pane) = 0;
	virtual int  GetPaneCount() const = 0;
	virtual RECT GetPaneWindowRect(int pane) const = 0;
	virtual RECT GetWindowRect() const = 0;
	virtual bool SetWindowRect(const RECT& rc) = 0;
	virtual int  GetActivePane() const = 0;
	virtual void SetActivePane(int pane) = 0;
	virtual bool GetHorizontalSplit() const = 0;
	virtual void SetHorizontalSplit(bool horizontalSplit) = 0;
	virtual void GetDiffColorSettings(ColorSettings& settings) const = 0;
	virtual void SetDiffColorSettings(const ColorSettings& settings) = 0;
	virtual double GetZoom() const = 0;
	virtual void SetZoom(double zoom) = 0;
	virtual const wchar_t* GetUserAgent() const = 0;
	virtual void SetUserAgent(const wchar_t* userAgent) = 0;
	virtual bool GetFitToWindow() const = 0;
	virtual void SetFitToWindow(bool fitToWindow) = 0;
	virtual SIZE GetSize() const = 0;
	virtual void SetSize(SIZE rc) = 0;
	virtual bool GetShowDifferences() const = 0;
	virtual void SetShowDifferences(bool visible) = 0;
	virtual bool GetShowWordDifferences() const = 0;
	virtual void SetShowWordDifferences(bool visible) = 0;
	virtual int  GetDiffCount() const = 0;
	virtual int  GetConflictCount() const = 0;
	virtual int  GetCurrentDiffIndex() const = 0;
	virtual bool FirstDiff() = 0;
	virtual bool LastDiff() = 0;
	virtual bool NextDiff() = 0;
	virtual bool PrevDiff() = 0;
	virtual bool FirstConflict() = 0;
	virtual bool LastConflict() = 0;
	virtual bool NextConflict() = 0;
	virtual bool PrevConflict() = 0; 
	virtual bool SelectDiff(int diffIndex) = 0;
	virtual int  GetNextDiffIndex() const = 0;
	virtual int  GetPrevDiffIndex() const = 0;
	virtual int  GetNextConflictIndex() const = 0;
	virtual int  GetPrevConflictIndex() const = 0;
	virtual HWND GetHWND() const = 0;
	virtual HWND GetPaneHWND(int pane) const = 0;
	virtual bool Copy() = 0;
	virtual bool Cut() = 0;
	virtual bool Delete() = 0;
	virtual bool Paste() = 0;
	virtual bool SelectAll() = 0;
	virtual bool Undo() = 0;
	virtual bool Redo() = 0;
	virtual bool CanUndo() = 0;
	virtual bool CanRedo() = 0;
	virtual const DiffOptions& GetDiffOptions() const = 0;
	virtual void SetDiffOptions(const DiffOptions& diffOptions) = 0;
	virtual bool GetSyncEvents() const = 0;
	virtual void SetSyncEvents(bool syncEvents) = 0;
	virtual unsigned GetSyncEventFlags() const = 0;
	virtual void SetSyncEventFlags(unsigned flags) = 0;
	virtual bool GetSyncEventFlag(EventType event) const = 0;
	virtual void SetSyncEventFlag(EventType event, bool flag) = 0;
	virtual CompareState GetCompareState() const = 0;
	virtual void RaiseEvent(const WebDiffEvent& e) = 0;
	virtual LogCallback GetLogCallback() const = 0;
	virtual void SetLogCallback(LogCallback logCallback) = 0;
	virtual bool IsDarkBackgroundEnabled() const = 0;
	virtual void SetDarkBackgroundEnabled(bool enabled) = 0;
	virtual double GetSplitterRatio(int pane) const = 0;
	virtual void SetSplitterRatios(const double* ratio, int count) = 0;
	virtual void ResetSplitterRatios() = 0;
};

struct IWebToolWindow
{
	using TranslateCallback = void(*)(int id, const wchar_t *org, size_t dstbufsize, wchar_t *dst);
	virtual HWND GetHWND() const = 0;
	virtual void Sync() = 0;
	virtual void Translate(TranslateCallback translateCallback) = 0;
};

extern "C"
{
	IWebDiffWindow* WinWebDiff_CreateWindow(HINSTANCE hInstance, HWND hWndParent, int nID = 0);
	bool WinWebDiff_DestroyWindow(IWebDiffWindow* pWebDiffWindow);
	IWebToolWindow * WinWebDiff_CreateToolWindow(HINSTANCE hInstance, HWND hWndParent, IWebDiffWindow *pWebDiffWindow);
	bool WinWebDiff_DestroyToolWindow(IWebToolWindow *pWebToolWindow);
};