Class that handles Undo records for modeless plug-in interfaces. More...

#include <ff_undo.h>

Inheritance diagram for FCUndoController:

Public Member Functions
const char *	ClassName () const override
	Returns the name of the class, for diagnostic purposes. This method MUST be overwritten in each child class.

	FCUndoController ()
	the constructor

const FCString &	GetLastUndoString () const
	returns the last undo string on this block.

bool	StartUndo (const FCString &undoString, bool savecurrent=false, bool isexplicit=true)
	Starts an undo session.

void	EndUndo (bool savecurrent=false)
	Ends an undo session.

void	SuspendUndo (bool savecurrent=false)
	Suspends an undo session by ending it and saving all current info so that it can be resumed. If no undo block is running, or if there already is a pending suspended undo, it is the same as calling EndUndo.

void	ResumeUndo (bool savecurrent=false)
	Resumes an undo session by starting a session with saved info from the previous call to SuspendUndo. If there is no pending suspended undo, it starts a default undo session using the last Undo string available. Any pending suspended undo is removed.

bool	Execute (__FCUndoBlockHandler pHandler, const FCString pUndoString)
	Executes the code within an undoable edit record.

bool	AddSession (const FCString *pUndoString, bool storecurrentblock)
	Starts a new Undo/Redo block within a running Execute() session.

bool	GetSandboxMode () const
	Return current sandbox mode.

bool	GetRequireExplicitUndo () const
	Return if explicit undo blocks are required.

bool	IsRunning () const
	Return whether undo block is currently running.

bool	GetCurrentIsExplicitUndo () const
	Return currently running undo block is explicit.

Public Member Functions inherited from __FCBase
virtual const PDKFRAMEWORK_CLASSID	GetClassID () const
	Returns the internal class ID for the PDK Framework class. This is implemented mostly because Lua has problems to resolve the true classes of inherited objects.

virtual	~__FCBase ()
	Virtual destructor, so all inherited classes get the virtual destructor.

void	DebugMsgInt (const char *pszPrefixText, int i)
	Creates a simple Message Box for debug purposes. The text appears with the extra digit (in decimal presentation) appearing afterwards.

void	DebugMsgHex (const char *pszPrefixText, int i)
	Creates a simple Message Box for debug purposes. The text appears with the extra digit (as a hexadecimal number) appearing afterwards.

void	DebugMsgString (const char pszPrefixText, const char thestring)
	Creates a simple Message Box for debug purposes. The text appears with the extra string appearing afterwards.

void	DebugMsg (const char *pszMsg)
	Creates a simple Message Box for debug purposes with just one text string.

void	DebugOutMenuInfo (FCUI *pUI, int menuixd_horiz, int menuixd_vert) const
	Outputs the menu command info for debugging purposes.

int	DebugOutFormat (const char *fmt,...)
	Outputs debug text using C style "printf" syntax.

virtual void	DebugDump ()
	Outputs the class data/information for debugging purposes.

virtual void	DebugDataDump ()
	Outputs a memory dump of the data block in the object for debugging purposes.

virtual void	DebugDataByteArrayDump ()
	Outputs a memory dump of the data block in the object for debugging purposes, as a C++ byte array.

void	Set16BitFlag (FLAG_16 *flag, FLAG_16 flagbits, bool state)
	Sets a 16 bit flag.

void	Set32BitFlag (FLAG_32 *flag, FLAG_32 flagbits, bool state)
	Sets/resets a 32 bit flag, by using a bit mask.

bool	GetBitFlag (FLAG_32 flag, FLAG_32 flagbits) const
	Gets a state from flag bits. Returns true if any bit in the mask is set.

int	GetBitCount (FLAG_32 flag)
	Returns the total number of set bits in a 32-bit unsigned int.

void	SetSpecific32Bit (FLAG_32 *flag, int bitnumber, bool state)
	Sets/resets a single bit in a 32 bit flag, by specifying one specific bit.

void	SetUserData (void *pData)
	Sets the user data attached to the instance of an object.

void	SetUserData2 (void *pData)
	Sets the additional user data attached to the instance of an object.

void *	GetUserData () const
	Gets the user data attached to the instance of an object.

void *	GetUserData2 () const
	Gets the additional user data attached to the instance of an object.

virtual bool	IsIdentical (const __FCBase *pCompareObject) const
	Returns true if the data in the passed object is considered to be identical to the current object, otherwise false.

void	StoreXML_String (tinyxml2::XMLElement pParentNode, const char pszElementName, FCString *pStringValue)
	Helper function to store FCString objects in the XML file.

void	StoreXML_Integer (tinyxml2::XMLElement pParentNode, const char pszElementName, int value)
	Helper function to store integer objects in the XML file.

void	StoreXML_Bool (tinyxml2::XMLElement pParentNode, const char pszElementName, bool value)
	Helper function to store boolean objects in the XML file.

void	StoreXML_StringAttribute (tinyxml2::XMLElement pNode, const char pszAttributeName, FCString *pStringValue)
	Helper function to store FCString objects in the XML file, as an attribute to a node.

void	StoreXML_IntegerAttribute (tinyxml2::XMLElement pNode, const char pszAttributeName, int value)
	Helper function to store integer objects in the XML file, as an attribute to a node.

void	StoreXML_BoolAttribute (tinyxml2::XMLElement pNode, const char pszAttributeName, bool value)
	Helper function to store boolean objects in the XML file, as an attribute to a node.

void	StoreXML_FloatAttribute (tinyxml2::XMLElement pNode, const char pszAttributeName, float value)
	Helper function to store floating point objects in the XML file, as an attribute to a node.

virtual void	StoreToXML (tinyxml2::XMLElement *pParentNode)
	Virtual method that is used to store an object's data.

bool	ReadXML_String (tinyxml2::XMLElement pParentNode, const char pszElementName, FCString *pStringValue)
	Helper method to read FCString objects from the XML file.

bool	ReadXML_Integer (tinyxml2::XMLElement pParentNode, const char pszElementName, int *pValue)
	Helper method to read integer objects from the XML file.

bool	ReadXML_Bool (tinyxml2::XMLElement pParentNode, const char pszElementName, bool *pValue)
	Helper method to read boolean objects from the XML file.

bool	ReadXML_StringAttribute (tinyxml2::XMLElement pNode, const char pszAttributeName, FCString *pStringValue)
	Helper method to read FCString objects from the XML file, as an attribute to a node.

bool	ReadXML_IntegerAttribute (tinyxml2::XMLElement pNode, const char pszAttributeName, int *pValue)
	Helper method to read integer objects from the XML file, as an attribute to a node.

bool	ReadXML_BoolAttribute (tinyxml2::XMLElement pNode, const char pszAttributeName, bool *pValue)
	Helper method to read boolean objects from the XML file, as an attribute to a node.

bool	ReadXML_FloatAttribute (tinyxml2::XMLElement pNode, const char pszAttributeName, float *pValue)
	Helper method to read floating point objects from the XML file, as an attribute to a node.

virtual bool	ReadFromXML (tinyxml2::XMLElement *pParentNode)
	Virtual method that is used to read object data.

Static Public Member Functions
static FCUndoController &	GetUndoController (_state_ptr S=nullptr)
	Gets the undo block for the session, creating it if there is not already one,.

static FCUndoController &	CreateUndoController (bool sandboxmode, bool explicitrequired, _state_ptr S=nullptr)
	Creates an undo block for the specified session. If it already exists, then the session parameters are updated on the existing undo block.

static void	RemoveUndoBlock (_state_ptr S)
	Clears out the undo block for the specified session. See comments at GetUndoController for more information about sessions.

Static Public Member Functions inherited from __FCBase
static void	DebugOutPtr (const char pszPrefixText, void ptr)
	Static method that outputs a line for debugging purposes. The prefix text appears with the extra ptr (in hexadeximal representation) appearing afterwards.

static void	DebugOutInt (const char *pszPrefixText, int i)
	Static method that outputs a line for debugging purposes. The text appears with the extra digit (in decimal presentation) appearing afterwards.

static void	DebugOutFloat (const char *pszPrefixText, double f)
	Static method that outputs a line for debugging purposes. The text appears with the extra float value appearing afterwards.

static void	DebugOutTag (const char *pszPrefixText, EXTAG extag)
	Static method that outputs a line for debugging purposes. The text appears with the EXTAG (in text) appearing afterwards.

static void	DebugOutHex (const char *pszPrefixText, int i)
	Static method that outputs a line for debugging purposes. The text appears with the extra digit (in hexadecimal presentation) appearing afterwards.

static void	DebugOutBin (const char *pszPrefixText, int i)
	Static method that outputs a line for debugging purposes. The text appears with the extra digit (in binary presentation) appearing afterwards.

static void	DebugOutString (const char pszPrefixText, const char thestring)
	Static method that outputs a line for debugging purposes (C string version). The text appears with the extra string appearing afterwards.

static void	DebugOutString (const char pszPrefixText, FCString pString)
	Static method that outputs a line for debugging purposes (FCString version). The text appears with the extra string appearing afterwards.

static void	DebugOutBool (const char *pszPrefixText, bool state)
	Static method that outputs a line for debugging purposes. The boolean state appears afterwards as either "TRUE" or "FALSE".

static void	DebugOutBlock (const void *pBuffer, int startoffset, int size)
	Static method that outputs a memory block for debugging purposes. Eight bytes per line will appear (as hex digits) until the whole memory block is dumped.

static void	DebugOutByteArrayBlock (const void *pBuffer, int startoffset, int size)
	Static method that outputs a memory block for debugging purposes. Eight bytes per line will appear (as hex digits) as a C++ onebyte array, until the whole memory block is dumped.

static void	DebugOut (const char *pszLine)
	Static method to output a line of text for debugging purposes.

Additional Inherited Members
Public Types inherited from __FCBase
enum	PDKFRAMEWORK_CLASSID { FCID_UNKNOWN = 0 , FCID_ACCIDENTALMOD , FCID_ACTIVELYRIC , FCID_ALLOTMENT , FCID_ARTICULATION , FCID_ARTICULATIONDEF , FCID_BACKWARDREPEAT , FCID_BASELINE , FCID_BEAMMOD , FCID_BEATCHARTELEMENT , FCID_BOOKMARK , FCID_BROKENBEAMMOD , FCID_CATEGORYDEF , FCID_CELLCLEFCHANGE , FCID_CELLFRAMEHOLD , FCID_CELLGRAPHIC , FCID_CELLTEXT , FCID_CENTERSMARTSHAPE , FCID_CHORD , FCID_CHORDPREFS , FCID_CHORDSUFFIXELEMENT , FCID_CHORUSSYLLABLE , FCID_CLEFDEF , FCID_COMPOSITETIMESIGBOTTOMELEMENT , FCID_COMPOSITETIMESIGTOPELEMENT , FCID_CROSSSTAFFMOD , FCID_CUSTOMSMARTLINEDEF , FCID_CUSTOMSTEMMOD , FCID_DISTANCEPREFS , FCID_DOTMOD , FCID_ENCLOSURE , FCID_ENDINGREPEAT , FCID_ENIGMATEXTSTYLE , FCID_ENTRYALTERMOD , FCID_EXECUTABLESHAPEDEF , FCID_EXPRESSION , FCID_FONTINFO , FCID_FONTPREFS , FCID_FREEZESYSTEM , FCID_FRETBOARDSTYLEDEF , FCID_FRETBOARDSTYLEDEFS , FCID_FRETBOARDGROUPDEF , FCID_FRETBOARDGROUPDEFS , FCID_FRETINSTRUMENTDEF , FCID_GENERALPREFS , FCID_GRIDSGUIDESPREFS , FCID_GROUP , FCID_GROUPNAMEPOSITIONPREFS , FCID_HUMANPLAYBACKPREFS , FCID_INDEPENDENTCELLDETAIL , FCID_INSTRUMENTDEF , FCID_INSTRUMENTPLAYBACKDATA , FCID_KEYMODEDEF , FCID_KEYSIGNATURE , FCID_LAYERPREFS , FCID_LYRICSBASELINE , FCID_LYRICSPREFS , FCID_MEASURE , FCID_MEASURENUMBERREGION , FCID_METATOOLASSIGNMENT , FCID_MIDIEXPRESSION , FCID_MISCDOCPREFS , FCID_MULTIMEASUREREST , FCID_MULTIMEASURERESTPREFS , FCID_MULTISTAFFINSTRUMENT , FCID_MULTISTAFFINSTRUMENTS , FCID_MUSICCHARACTERPREFS , FCID_MUSICSPACINGPREFS , FCID_NUMBER , FCID_NOTEHEADMOD , FCID_OTHERINCI , FCID_PERCUSSIONLAYOUTNOTE , FCID_PERCUSSIONSTAFF , FCID_PERFORMANCEMOD , FCID_PAGE , FCID_PAGEFORMATPREFS , FCID_PAGEGRAPHIC , FCID_PAGETEXT , FCID_PART , FCID_PARTEXTRACTPREFS , FCID_PARTSCOPEPREFS , FCID_PARTSTAFFVOICING , FCID_PERCUSSIONNOTEMOD , FCID_PIANOBRACEPREFS , FCID_PLAYBACKPREFS , FCID_RAWTEXT , FCID_REPEATPREFS , FCID_SECONDARYBEAMBREAKMOD , FCID_BEAMEXTENSIONMOD , FCID_SECTIONSYLLABLE , FCID_SEPARATEMEASURENUMBER , FCID_SEPARATEPLACEMENT , FCID_SHAPEDEF , FCID_SHAPEEXPRESSIONDEF , FCID_SLURCONTOURPREFS , FCID_SIZEPREFS , FCID_SMARTSHAPE , FCID_SMARTSHAPEENTRYMARK , FCID_SMARTSHAPEMEASUREMARK , FCID_SMARTSHAPEPREFS , FCID_STAFF , FCID_STAFFLIST , FCID_STAFFNAMEPOSITION , FCID_STAFFNAMEPOSITIONPREFS , FCID_STAFFSTYLEASSIGN , FCID_STAFFSTYLEDEF , FCID_STAFFSYSTEM , FCID_STEMCONNECTIONTABLE , FCID_STEMMOD , FCID_STRING , FCID_SYLLABLEENTRYMOD , FCID_SYSTEMSTAFF , FCID_TABLATURENOTEMOD , FCID_TEMPOELEMENT , FCID_TEXTBLOCK , FCID_TEXTEXPRESSIONDEF , FCID_TEXTREPEAT , FCID_TEXTREPEATDEF , FCID_TIEMOD , FCID_TIEPREFS , FCID_TIECONTOURPREFS , FCID_TIEPLACEMENTPREFS , FCID_TIMESIGNATURE , FCID_TUPLET , FCID_TUPLETPREFS , FCID_VERSESYLLABLE }
	Constants for the GetClassID method. More...

enum	MEASUREMENTUNITS { MEASUREMENTUNIT_DEFAULT = UNIT_DEFAULT , MEASUREMENTUNIT_EVPUS = UNIT_EVPUS , MEASUREMENTUNIT_INCHES = UNIT_INCHES , MEASUREMENTUNIT_CENTIMETERS = UNIT_CENTS , MEASUREMENTUNIT_POINTS = UNIT_POINTS , MEASUREMENTUNIT_PICAS = UNIT_PICAS , MEASUREMENTUNIT_SPACES = UNIT_SPACES , MEASUREMENTUNIT_MILLIMETERS = 100 }
	Constants for Finale's standard measurement units. More...

Protected Member Functions inherited from __FCBase
	__FCBase ()
	The constructor.

Detailed Description

Class that handles Undo records for modeless plug-in interfaces.

This class is useful both to create separate edit records, or to do edits that never should be saved.

Member Function Documentation

◆ AddSession()

bool FCUndoController::AddSession	(	const FCString *	pUndoString,
		bool	storecurrentblock )

Starts a new Undo/Redo block within a running Execute() session.

This must be called from the __FCUndoBlockHandler object to make sense.

Parameters

[in]	pUndoString	The undo string for the new session.
[in]	storecurrentblock	If true, store the edits made in the previous undo block. If false, cancel those edits.

Returns: true on success.

◆ ClassName()

const char * FCUndoController::ClassName ( ) const

inlineoverridevirtual

Returns the name of the class, for diagnostic purposes. This method MUST be overwritten in each child class.

Lua-supported.

Implements __FCBase.

◆ CreateUndoController()

static FCUndoController & FCUndoController::CreateUndoController	(	bool	sandboxmode,
		bool	explicitrequired,
		_state_ptr	S = nullptr )

inlinestatic

Creates an undo block for the specified session. If it already exists, then the session parameters are updated on the existing undo block.

Parameters

sandboxmode	when this parameter is true, all calls to EndUndo roll back the changes.
explicitrequired	when this parameter is true, calls to EndUndo roll back the changes if the corresponding call to StartUndo did not specify isexplicit = true.
S	State pointer. See GetUndoController for more information.

◆ Execute()

bool FCUndoController::Execute	(	__FCUndoBlockHandler *	pHandler,
		const FCString *	pUndoString )

Executes the code within an undoable edit record.

This will execute the undo block handler's (virtual) Execute method. If this method returns true, an Undo block will created in Finale. Otherwise, the editing will be canceled.

Returns: True if the handler returned true.

◆ GetUndoController()

static FCUndoController & FCUndoController::GetUndoController ( _state_ptr S = nullptr )

inlinestatic

Gets the undo block for the session, creating it if there is not already one,.

Parameters

S	for Lua callers this is the Lua state. For C++ callers this can be any void pointer or NULL if you do not want to differentiate sessions.

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ AddSession()

◆ ClassName()

◆ CreateUndoController()

◆ Execute()

◆ GetUndoController()