{------------------------------------------------------------------------------- The contents of this file are subject to the Mozilla Public License Version 1.1 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.mozilla.org/MPL/ Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language governing rights and limitations under the License. Alternatively, the contents of this file may be used under the terms of the GNU General Public License Version 2 or later (the "GPL"), in which case the provisions of the GPL are applicable instead of those above. If you wish to allow use of your version of this file only under the terms of the GPL and not to allow others to use your version of this file under the MPL, indicate your decision by deleting the provisions above and replace them with the notice and other provisions required by the GPL. If you do not delete the provisions above, a recipient may use your version of this file under either the MPL or the GPL. -------------------------------------------------------------------------------} unit SynEditTextBase; {$I synedit.inc} interface uses Classes, SysUtils, LCLProc, SynEditMiscProcs, SynEditKeyCmds; type TSynEditStrings = class; TStringListLineCountEvent = procedure(Sender: TSynEditStrings; Index, Count: Integer) of object; TStringListLineEditEvent = procedure(Sender: TSynEditStrings; LinePos, BytePos, Count, LineBrkCnt: Integer; Text: String) of object; TSynEditNotifyReason = ( // TStringListLineCountEvent senrLineCount, // Lines Inserted or Deleted (if not empty, they will trigger senrLineChange too) senrLineChange, // Lines modified (also triggered by senrEditAction) senrHighlightChanged, // used by Highlighter (invalidate and fold checks needed) // TStringListLineEditEvent senrEditAction, // EditInsert, EditDelete, EditLineBreak, ... // TNotifyEvent senrBeginUpdate, senrEndUpdate, senrCleared, senrUndoRedoAdded, senrModifiedChanged // The modified flag was changed ); TPhysicalCharWidths = Array of Shortint; TSynEditUndoList = class; TSynEditUndoItem = class; type { TSynEditStorageMem } TSynEditStorageMem = class private FMem: PByte; FCount, FCapacity: Integer; function GetItemPointer(Index: Integer): Pointer; protected procedure SetCapacity(const AValue: Integer); virtual; procedure SetCount(const AValue: Integer); virtual; function ItemSize: Integer; virtual; abstract; procedure Move(AFrom, ATo, ALen: Integer); virtual; property Mem: PByte read FMem; property ItemPointer[Index: Integer]: Pointer read GetItemPointer; public constructor Create; destructor Destroy; override; procedure InsertRows(AIndex, ACount: Integer); virtual; procedure DeleteRows(AIndex, ACount: Integer); virtual; property Capacity: Integer read FCapacity write SetCapacity; // Capacity must be maintained by owner (Shrink) property Count: Integer read FCount write SetCount; end; { TSynManagedStorageMem } TSynManagedStorageMem = class(TSynEditStorageMem) protected // Todo: Add Flags,which updates are required procedure LineTextChanged(AIndex: Integer); virtual; procedure InsertedLines(AIndex, ACount: Integer); virtual; procedure DeletedLines(AIndex, ACount: Integer); virtual; end; { TSynManagedStorageMemList } TSynManagedStorageMemList = class private FStorageMemList: Array of TSynManagedStorageMem; FClassList: Array of Pointer; function GetStorageMems(Index: Pointer): TSynManagedStorageMem; procedure SetStorageMems(Index: Pointer; const AValue: TSynManagedStorageMem); procedure SetChildCapacities(const AValue: Integer); procedure SetChildCounts(const AValue: Integer); public procedure ChildInsertRows(AIndex, ACount: Integer); procedure ChildDeleteRows(AIndex, ACount: Integer); procedure CallMove(AFrom, ATo, ALen: Integer); procedure CallLineTextChanged(AIndex: Integer); procedure CallInsertedLines(AIndex, ACount: Integer); procedure CallDeletedLines(AIndex, ACount: Integer); property ChildCapacities: Integer write SetChildCapacities; property ChildCounts: Integer write SetChildCounts; property StorageMems[Index: Pointer]: TSynManagedStorageMem read GetStorageMems write SetStorageMems; default; end; { TSynEditStringsBase } TSynEditStringsBase = class(TStrings) protected function GetRange(Index: Pointer): TSynManagedStorageMem; virtual; abstract; procedure PutRange(Index: Pointer; const ARange: TSynManagedStorageMem); virtual; abstract; public procedure SendHighlightChanged(aIndex, aCount: Integer); virtual; abstract; property Ranges[Index: Pointer]: TSynManagedStorageMem read GetRange write PutRange; end; { TSynEditStrings } TSynEditStrings = class(TSynEditStringsBase) protected FIsUtf8: Boolean; function GetIsUtf8 : Boolean; virtual; procedure SetIsUtf8(const AValue : Boolean); virtual; function GetAttribute(const Owner: TClass; const Index: Integer): Pointer; virtual; abstract; procedure SetAttribute(const Owner: TClass; const Index: Integer; const AValue: Pointer); virtual; abstract; function GetExpandedString(Index: integer): string; virtual; abstract; function GetLengthOfLongestLine: integer; virtual; abstract; procedure SetTextStr(const Value: string); override; function GetUndoList: TSynEditUndoList; virtual; abstract; function GetRedoList: TSynEditUndoList; virtual; abstract; function GetCurUndoList: TSynEditUndoList; virtual; abstract; procedure SetIsUndoing(const AValue: Boolean); virtual; abstract; function GetIsUndoing: Boolean; virtual; abstract; procedure SetIsRedoing(const AValue: Boolean); virtual; abstract; function GetIsRedoing: Boolean; virtual; abstract; procedure SendNotification(AReason: TSynEditNotifyReason; ASender: TSynEditStrings; aIndex, aCount: Integer; aBytePos: Integer = -1; aLen: Integer = 0; aTxt: String = ''); virtual; abstract; procedure IgnoreSendNotification(AReason: TSynEditNotifyReason; ReEnable: Boolean); virtual; abstract; public constructor Create; procedure DeleteLines(Index, NumLines: integer); virtual; abstract; procedure InsertLines(Index, NumLines: integer); virtual; abstract; procedure InsertStrings(Index: integer; NewStrings: TStrings); virtual; abstract; procedure RegisterAttribute(const Index: TClass; const Size: Word); virtual; abstract; property Attribute[Owner: TClass; Index: Integer]: Pointer read GetAttribute write SetAttribute; procedure AddGenericHandler(AReason: TSynEditNotifyReason; AHandler: TMethod); virtual; abstract; procedure AddChangeHandler(AReason: TSynEditNotifyReason; AHandler: TStringListLineCountEvent); procedure AddNotifyHandler(AReason: TSynEditNotifyReason; AHandler: TNotifyEvent); procedure RemoveGenericHandler(AReason: TSynEditNotifyReason; AHandler: TMethod); virtual; abstract; procedure RemoveChangeHandler(AReason: TSynEditNotifyReason; AHandler: TStringListLineCountEvent); procedure RemoveNotifyHandler(AReason: TSynEditNotifyReason; AHandler: TNotifyEvent); procedure AddEditHandler(AHandler: TStringListLineEditEvent); procedure RemoveEditHandler(AHandler: TStringListLineEditEvent); procedure SendHighlightChanged(aIndex, aCount: Integer); override; public function GetPhysicalCharWidths(Index: Integer): TPhysicalCharWidths; function GetPhysicalCharWidths(const Line: String; Index: Integer): TPhysicalCharWidths; virtual; abstract; // Byte to Char function LogicalToPhysicalPos(const p: TPoint): TPoint; function LogicalToPhysicalCol(const Line: String; Index, LogicalPos: integer): integer; virtual; // Char to Byte function PhysicalToLogicalPos(const p: TPoint): TPoint; function PhysicalToLogicalCol(const Line: string; Index, PhysicalPos: integer): integer; virtual; public procedure EditInsert(LogX, LogY: Integer; AText: String); virtual; abstract; function EditDelete(LogX, LogY, ByteLen: Integer): String; virtual; abstract; procedure EditLineBreak(LogX, LogY: Integer); virtual; abstract; procedure EditLineJoin(LogY: Integer; FillText: String = ''); virtual; abstract; procedure EditLinesInsert(LogY, ACount: Integer; AText: String = ''); virtual; abstract; procedure EditLinesDelete(LogY, ACount: Integer); virtual; abstract; procedure EditUndo(Item: TSynEditUndoItem); virtual; abstract; procedure EditRedo(Item: TSynEditUndoItem); virtual; abstract; property UndoList: TSynEditUndoList read GetUndoList; property RedoList: TSynEditUndoList read GetRedoList; property CurUndoList: TSynEditUndoList read GetCurUndoList; // Re or Undo (Redo while undoing) property IsUndoing: Boolean read GetIsUndoing write SetIsUndoing; property IsRedoing: Boolean read GetIsRedoing write SetIsRedoing; public property ExpandedStrings[Index: integer]: string read GetExpandedString; property LengthOfLongestLine: integer read GetLengthOfLongestLine; property IsUtf8: Boolean read GetIsUtf8 write SetIsUtf8; end; { TSynEditStringsLinked } TSynEditStringsLinked = class(TSynEditStrings) protected fSynStrings: TSynEditStrings; function GetIsUtf8 : Boolean; override; procedure SetIsUtf8(const AValue : Boolean); override; function GetRange(Index: Pointer): TSynManagedStorageMem; override; procedure PutRange(Index: Pointer; const ARange: TSynManagedStorageMem); override; function GetAttribute(const Owner: TClass; const Index: Integer): Pointer; override; procedure SetAttribute(const Owner: TClass; const Index: Integer; const AValue: Pointer); override; function GetExpandedString(Index: integer): string; override; function GetLengthOfLongestLine: integer; override; procedure SendNotification(AReason: TSynEditNotifyReason; ASender: TSynEditStrings; aIndex, aCount: Integer; aBytePos: Integer = -1; aLen: Integer = 0; aTxt: String = ''); override; procedure IgnoreSendNotification(AReason: TSynEditNotifyReason; IncIgnore: Boolean); override; function GetUndoList: TSynEditUndoList; override; function GetRedoList: TSynEditUndoList; override; function GetCurUndoList: TSynEditUndoList; override; procedure SetIsUndoing(const AValue: Boolean); override; function GetIsUndoing: Boolean; override; procedure SetIsRedoing(const AValue: Boolean); override; function GetIsRedoing: Boolean; override; protected function GetCount: integer; override; function GetCapacity: integer; {$IFDEF SYN_COMPILER_3_UP} override; {$ELSE} virtual; {$ENDIF} procedure SetCapacity(NewCapacity: integer); {$IFDEF SYN_COMPILER_3_UP} override; {$ELSE} virtual; {$ENDIF} function Get(Index: integer): string; override; function GetObject(Index: integer): TObject; override; procedure Put(Index: integer; const S: string); override; procedure PutObject(Index: integer; AObject: TObject); override; procedure SetUpdateState(Updating: Boolean); override; public constructor Create(ASynStringSource: TSynEditStrings); function Add(const S: string): integer; override; procedure AddStrings(AStrings: TStrings); override; procedure Clear; override; procedure Delete(Index: integer); override; procedure DeleteLines(Index, NumLines: integer); override; procedure Insert(Index: integer; const S: string); override; procedure InsertLines(Index, NumLines: integer); override; procedure InsertStrings(Index: integer; NewStrings: TStrings); override; // Size: 0 = Bit (TODO); 1..8 Size In Byte "SizeOf()" procedure RegisterAttribute(const Index: TClass; const Size: Word); override; procedure AddGenericHandler(AReason: TSynEditNotifyReason; AHandler: TMethod); override; procedure RemoveGenericHandler(AReason: TSynEditNotifyReason; AHandler: TMethod); override; function GetPhysicalCharWidths(const Line: String; Index: Integer): TPhysicalCharWidths; override; property NextLines: TSynEditStrings read fSynStrings write fSynStrings; public // LogX, LogY are 1-based procedure EditInsert(LogX, LogY: Integer; AText: String); override; function EditDelete(LogX, LogY, ByteLen: Integer): String; override; procedure EditLineBreak(LogX, LogY: Integer); override; procedure EditLineJoin(LogY: Integer; FillText: String = ''); override; procedure EditLinesInsert(LogY, ACount: Integer; AText: String = ''); override; procedure EditLinesDelete(LogY, ACount: Integer); override; procedure EditUndo(Item: TSynEditUndoItem); override; procedure EditRedo(Item: TSynEditUndoItem); override; end; { TSynEditUndoItem } TSynEditUndoItem = class(TObject) protected // IsEqual is only needed/implemented for Carets function IsEqualContent(AnItem: TSynEditUndoItem): Boolean; virtual; function IsEqual(AnItem: TSynEditUndoItem): Boolean; function DebugString: String; virtual; public function IsCaretInfo: Boolean; virtual; function PerformUndo(Caller: TObject): Boolean; virtual; abstract; end; { TSynEditUndoGroup } TSynEditUndoGroup = class(TObject) private FItems: Array of TSynEditUndoItem; FCount, FCapacity: Integer; FReason: TSynEditorCommand; function GetItem(Index: Integer): TSynEditUndoItem; procedure Grow; protected Function HasUndoInfo: Boolean; procedure Append(AnUndoGroup: TSynEditUndoItem); procedure TranferTo(AnUndoGroup: TSynEditUndoGroup); function CanMergeWith(AnUndoGroup: TSynEditUndoGroup): Boolean; procedure MergeWith(AnUndoGroup: TSynEditUndoGroup); public constructor Create; Destructor Destroy; override; procedure Assign(AnUndoGroup: TSynEditUndoGroup); procedure Add(AnItem: TSynEditUndoItem); procedure Clear; procedure Insert(AIndex: Integer; AnItem: TSynEditUndoItem); function Pop: TSynEditUndoItem; property Count: Integer read FCount; property Items [Index: Integer]: TSynEditUndoItem read GetItem; property Reason: TSynEditorCommand read FReason write FReason; end; TSynGetCaretUndoProc = function: TSynEditUndoItem of object; { TSynEditUndoList } TSynEditUndoList = class(TObject) private FGroupUndo: Boolean; FIsInsideRedo: Boolean; FUndoGroup: TSynEditUndoGroup; FInGroupCount: integer; fFullUndoImposible: boolean; fItems: TList; fLockCount: integer; fMaxUndoActions: integer; fOnAdded: TNotifyEvent; FOnNeedCaretUndo: TSynGetCaretUndoProc; fUnModifiedItem: integer; FForceGroupEnd: Boolean; procedure EnsureMaxEntries; function GetCanUndo: boolean; function GetCurrentReason: TSynEditorCommand; function GetItemCount: integer; procedure SetCurrentReason(const AValue: TSynEditorCommand); procedure SetMaxUndoActions(Value: integer); public constructor Create; destructor Destroy; override; procedure AddChange(AChange: TSynEditUndoItem); procedure AppendToLastChange(AChange: TSynEditUndoItem); procedure BeginBlock; procedure EndBlock; procedure Clear; procedure Lock; function PopItem: TSynEditUndoGroup; procedure Unlock; function IsLocked: Boolean; procedure MarkTopAsUnmodified; procedure ForceGroupEnd; function RealCount: Integer; function IsTopMarkedAsUnmodified: boolean; function UnModifiedMarkerExists: boolean; public property CanUndo: boolean read GetCanUndo; property FullUndoImpossible: boolean read fFullUndoImposible; property ItemCount: integer read GetItemCount; property MaxUndoActions: integer read fMaxUndoActions write SetMaxUndoActions; property IsInsideRedo: Boolean read FIsInsideRedo write FIsInsideRedo; property OnAddedUndo: TNotifyEvent read fOnAdded write fOnAdded; property OnNeedCaretUndo : TSynGetCaretUndoProc read FOnNeedCaretUndo write FOnNeedCaretUndo; property GroupUndo: Boolean read FGroupUndo write FGroupUndo; property CurrentGroup: TSynEditUndoGroup read FUndoGroup; property CurrentReason: TSynEditorCommand read GetCurrentReason write SetCurrentReason; end; ESynEditStorageMem = class(Exception); implementation {$IFNDEF FPC} {$IFDEF SYN_COMPILER_3_UP} resourcestring {$ELSE} const {$ENDIF} {$ELSE} const {$ENDIF} SListIndexOutOfBounds = 'Invalid stringlist index %d'; procedure ListIndexOutOfBounds(Index: integer); begin raise ESynEditStorageMem.CreateFmt(SListIndexOutOfBounds, [Index]); end; { TSynEditStrings } constructor TSynEditStrings.Create; begin inherited Create; IsUtf8 := True; end; procedure TSynEditStrings.AddChangeHandler(AReason: TSynEditNotifyReason; AHandler: TStringListLineCountEvent); begin AddGenericHandler(AReason, TMethod(AHandler)); end; procedure TSynEditStrings.AddNotifyHandler(AReason: TSynEditNotifyReason; AHandler: TNotifyEvent); begin AddGenericHandler(AReason, TMethod(AHandler)); end; procedure TSynEditStrings.RemoveChangeHandler(AReason: TSynEditNotifyReason; AHandler: TStringListLineCountEvent); begin RemoveGenericHandler(AReason, TMethod(AHandler)); end; procedure TSynEditStrings.RemoveNotifyHandler(AReason: TSynEditNotifyReason; AHandler: TNotifyEvent); begin RemoveGenericHandler(AReason, TMethod(AHandler)); end; procedure TSynEditStrings.AddEditHandler(AHandler: TStringListLineEditEvent); begin AddGenericHandler(senrEditAction, TMethod(AHandler)); end; procedure TSynEditStrings.RemoveEditHandler(AHandler: TStringListLineEditEvent); begin RemoveGenericHandler(senrEditAction, TMethod(AHandler)); end; procedure TSynEditStrings.SendHighlightChanged(aIndex, aCount: Integer); begin SendNotification(senrHighlightChanged, Self, aIndex, aCount); end; function TSynEditStrings.GetPhysicalCharWidths(Index: Integer): TPhysicalCharWidths; begin Result := GetPhysicalCharWidths(Strings[Index], Index); end; function TSynEditStrings.GetIsUtf8 : Boolean; begin Result := FIsUtf8; end; procedure TSynEditStrings.SetIsUtf8(const AValue : Boolean); begin FIsUtf8 := AValue; end; procedure TSynEditStrings.SetTextStr(const Value : string); var StartPos: PChar; p: PChar; Last: PChar; sl: TStringList; s: string; begin if Value='' then begin Clear; exit; end; BeginUpdate; sl:=TStringList.Create; try Clear; p:=PChar(Value); StartPos:=p; Last:=p+length(Value); while p'' then System.Move(StartPos^,s[1],length(s)); sl.Add(s); if (p[1] in [#10,#13]) and (p[1]<>p^) then inc(p); inc(p); StartPos:=p; end; end; if StartPos'' then System.Move(StartPos^,s[1],length(s)); sl.Add(s); end; AddStrings(sl); finally sl.Free; EndUpdate; end; end; function TSynEditStrings.LogicalToPhysicalPos(const p : TPoint) : TPoint; begin Result := p; if Result.Y - 1 < Count then Result.X:=LogicalToPhysicalCol(self[Result.Y - 1], Result.Y, Result.X); end; function TSynEditStrings.LogicalToPhysicalCol(const Line : String; Index, LogicalPos: integer) : integer; var i, ByteLen: integer; CharWidths: TPhysicalCharWidths; begin CharWidths := GetPhysicalCharWidths(Line, Index); ByteLen := length(Line); dec(LogicalPos); if LogicalPos > ByteLen then begin Result := 1 + LogicalPos - ByteLen; LogicalPos := ByteLen; end else Result := 1; for i := 0 to LogicalPos - 1 do Result := Result + CharWidths[i]; end; function TSynEditStrings.PhysicalToLogicalPos(const p : TPoint) : TPoint; begin Result := p; if (Result.Y>=1) and (Result.Y <= Count) then Result.X:=PhysicalToLogicalCol(self[Result.Y - 1], Result.Y - 1, Result.X); end; function TSynEditStrings.PhysicalToLogicalCol(const Line : string; Index, PhysicalPos : integer) : integer; var BytePos, ByteLen: integer; ScreenPos: integer; CharWidths: TPhysicalCharWidths; begin CharWidths := GetPhysicalCharWidths(Line, Index); ByteLen := Length(Line); ScreenPos := 1; BytePos := 0; while BytePos < ByteLen do begin if ScreenPos + CharWidths[BytePos] > PhysicalPos then exit(BytePos+1); ScreenPos := ScreenPos + CharWidths[BytePos]; inc(BytePos); end; Result := BytePos + 1 + PhysicalPos - ScreenPos; end; { TSynEditStringsLinked } constructor TSynEditStringsLinked.Create(ASynStringSource: TSynEditStrings); begin fSynStrings := ASynStringSource; Inherited Create; end; function TSynEditStringsLinked.Add(const S: string): integer; begin Result := fSynStrings.Add(S); end; procedure TSynEditStringsLinked.AddStrings(AStrings: TStrings); begin fSynStrings.AddStrings(AStrings); end; procedure TSynEditStringsLinked.Clear; begin fSynStrings.Clear; end; procedure TSynEditStringsLinked.Delete(Index: integer); begin fSynStrings.Delete(Index); end; procedure TSynEditStringsLinked.DeleteLines(Index, NumLines: integer); begin fSynStrings.DeleteLines(Index, NumLines); end; procedure TSynEditStringsLinked.Insert(Index: integer; const S: string); begin fSynStrings.Insert(Index, S); end; procedure TSynEditStringsLinked.InsertLines(Index, NumLines: integer); begin fSynStrings.InsertLines(Index, NumLines); end; procedure TSynEditStringsLinked.InsertStrings(Index: integer; NewStrings: TStrings); begin fSynStrings.InsertStrings(Index, NewStrings); end; procedure TSynEditStringsLinked.SetIsUndoing(const AValue: Boolean); begin fSynStrings.IsUndoing := AValue; end; function TSynEditStringsLinked.GetIsUndoing: Boolean; begin Result := fSynStrings.IsUndoing; end; procedure TSynEditStringsLinked.SetIsRedoing(const AValue: Boolean); begin fSynStrings.IsRedoing := AValue; end; function TSynEditStringsLinked.GetIsRedoing: Boolean; begin Result := fSynStrings.IsRedoing; end; function TSynEditStringsLinked.GetIsUtf8: Boolean; begin Result := FSynStrings.IsUtf8; end; procedure TSynEditStringsLinked.SetIsUtf8(const AValue: Boolean); begin FSynStrings.IsUtf8 := AValue; end; //Ranges function TSynEditStringsLinked.GetRange(Index: Pointer): TSynManagedStorageMem; begin Result:= fSynStrings.Ranges[Index]; end; procedure TSynEditStringsLinked.PutRange(Index: Pointer; const ARange: TSynManagedStorageMem); begin fSynStrings.Ranges[Index] := ARange; end; function TSynEditStringsLinked.GetAttribute(const Owner: TClass; const Index: Integer): Pointer; begin Result := fSynStrings.Attribute[Owner, Index]; end; procedure TSynEditStringsLinked.SetAttribute(const Owner: TClass; const Index: Integer; const AValue: Pointer); begin fSynStrings.Attribute[Owner, Index] := AValue; end; function TSynEditStringsLinked.GetExpandedString(Index: integer): string; begin Result:= fSynStrings.GetExpandedString(Index); end; function TSynEditStringsLinked.GetLengthOfLongestLine: integer; begin Result:= fSynStrings.GetLengthOfLongestLine; end; function TSynEditStringsLinked.GetRedoList: TSynEditUndoList; begin Result := fSynStrings.GetRedoList; end; function TSynEditStringsLinked.GetUndoList: TSynEditUndoList; begin Result := fSynStrings.GetUndoList; end; function TSynEditStringsLinked.GetCurUndoList: TSynEditUndoList; begin Result := fSynStrings.GetCurUndoList; end; procedure TSynEditStringsLinked.RegisterAttribute(const Index: TClass; const Size: Word); begin fSynStrings.RegisterAttribute(Index, Size); end; procedure TSynEditStringsLinked.AddGenericHandler(AReason: TSynEditNotifyReason; AHandler: TMethod); begin fSynStrings.AddGenericHandler(AReason, AHandler); end; procedure TSynEditStringsLinked.RemoveGenericHandler(AReason: TSynEditNotifyReason; AHandler: TMethod); begin fSynStrings.RemoveGenericHandler(AReason, AHandler); end; // Count function TSynEditStringsLinked.GetCount: integer; begin Result:= fSynStrings.Count; end; function TSynEditStringsLinked.GetCapacity: integer; begin Result:= fSynStrings.Capacity; end; procedure TSynEditStringsLinked.SetCapacity(NewCapacity: integer); begin fSynStrings.Capacity := NewCapacity; end; function TSynEditStringsLinked.Get(Index: integer): string; begin Result:= fSynStrings.Get(Index); end; function TSynEditStringsLinked.GetObject(Index: integer): TObject; begin Result:= fSynStrings.GetObject(Index); end; procedure TSynEditStringsLinked.Put(Index: integer; const S: string); begin fSynStrings.Put(Index, S); end; procedure TSynEditStringsLinked.PutObject(Index: integer; AObject: TObject); begin fSynStrings.PutObject(Index, AObject); end; function TSynEditStringsLinked.GetPhysicalCharWidths(const Line: String; Index: Integer): TPhysicalCharWidths; begin Result := fSynStrings.GetPhysicalCharWidths(Line, Index); end; procedure TSynEditStringsLinked.SetUpdateState(Updating: Boolean); begin if Updating then fSynStrings.BeginUpdate else fSynStrings.EndUpdate; end; procedure TSynEditStringsLinked.EditInsert(LogX, LogY: Integer; AText: String); begin fSynStrings.EditInsert(LogX, LogY, AText); end; function TSynEditStringsLinked.EditDelete(LogX, LogY, ByteLen: Integer): String; begin Result := fSynStrings.EditDelete(LogX, LogY, ByteLen); end; procedure TSynEditStringsLinked.EditLineBreak(LogX, LogY: Integer); begin fSynStrings.EditLineBreak(LogX, LogY); end; procedure TSynEditStringsLinked.EditLineJoin(LogY: Integer; FillText: String = ''); begin fSynStrings.EditLineJoin(LogY, FillText); end; procedure TSynEditStringsLinked.EditLinesInsert(LogY, ACount: Integer; AText: String = ''); begin fSynStrings.EditLinesInsert(LogY, ACount, AText); end; procedure TSynEditStringsLinked.EditLinesDelete(LogY, ACount: Integer); begin fSynStrings.EditLinesDelete(LogY, ACount); end; procedure TSynEditStringsLinked.EditUndo(Item: TSynEditUndoItem); begin fSynStrings.EditUndo(Item); end; procedure TSynEditStringsLinked.EditRedo(Item: TSynEditUndoItem); begin fSynStrings.EditRedo(Item); end; procedure TSynEditStringsLinked.SendNotification(AReason: TSynEditNotifyReason; ASender: TSynEditStrings; aIndex, aCount: Integer; aBytePos: Integer = -1; aLen: Integer = 0; aTxt: String = ''); begin fSynStrings.SendNotification(AReason, ASender, aIndex, aCount, aBytePos, aLen, aTxt); end; procedure TSynEditStringsLinked.IgnoreSendNotification(AReason: TSynEditNotifyReason; IncIgnore: Boolean); begin fSynStrings.IgnoreSendNotification(AReason, IncIgnore); end; { TSynEditUndoList } constructor TSynEditUndoList.Create; begin inherited Create; // Create and keep one undo group => avoids resizing the FItems list FUndoGroup := TSynEditUndoGroup.Create; FIsInsideRedo := False; fItems := TList.Create; fMaxUndoActions := 1024; fUnModifiedItem:=-1; FForceGroupEnd := False; end; destructor TSynEditUndoList.Destroy; begin Clear; fItems.Free; FreeAndNil(FUndoGroup); inherited Destroy; end; procedure TSynEditUndoList.AddChange(AChange: TSynEditUndoItem); var ugroup: TSynEditUndoGroup; begin if fLockCount > 0 then begin AChange.Free; exit; end; if FInGroupCount > 0 then FUndoGroup.Add(AChange) else begin ugroup := TSynEditUndoGroup.Create; ugroup.Add(AChange); fItems.Add(ugroup); if Assigned(fOnAdded) then fOnAdded(Self); end; EnsureMaxEntries; end; procedure TSynEditUndoList.AppendToLastChange(AChange: TSynEditUndoItem); var cur: Boolean; begin cur := FUndoGroup.HasUndoInfo; if (fLockCount <> 0) or ((fItems.Count = 0) and not cur) then begin AChange.Free; exit; end; if cur then FUndoGroup.Append(AChange) else TSynEditUndoGroup(fItems[fItems.Count-1]).Append(AChange); // Do not callback to synedit, or Redo Info is lost EnsureMaxEntries; end; procedure TSynEditUndoList.BeginBlock; begin Inc(FInGroupCount); if (FInGroupCount = 1) then begin FUndoGroup.Clear; if assigned(FOnNeedCaretUndo) then FUndoGroup.add(FOnNeedCaretUndo()); end end; procedure TSynEditUndoList.Clear; var i: integer; begin for i := 0 to fItems.Count - 1 do TSynEditUndoGroup(fItems[i]).Free; fItems.Clear; fFullUndoImposible := FALSE; fUnModifiedItem:=-1; end; procedure TSynEditUndoList.EndBlock; var ugroup: TSynEditUndoGroup; begin if FInGroupCount > 0 then begin Dec(FInGroupCount); if (FInGroupCount = 0) and FUndoGroup.HasUndoInfo then begin // Keep position for REDO; Do not replace if present if (not FUndoGroup.Items[FUndoGroup.Count - 1].IsCaretInfo) and assigned(FOnNeedCaretUndo) then FUndoGroup.Add(FOnNeedCaretUndo()); if (fItems.Count > 0) and FGroupUndo and (not IsTopMarkedAsUnmodified) and (not FForceGroupEnd) and FUndoGroup.CanMergeWith(TSynEditUndoGroup(fItems[fItems.Count - 1])) then begin FUndoGroup.MergeWith(TSynEditUndoGroup(fItems[fItems.Count - 1])); FUndoGroup.TranferTo(TSynEditUndoGroup(fItems[fItems.Count - 1])); end else begin ugroup := TSynEditUndoGroup.Create; FUndoGroup.TranferTo(ugroup); fItems.Add(ugroup); end; if Assigned(fOnAdded) then fOnAdded(Self); FIsInsideRedo := False; FForceGroupEnd := False; end; end; end; procedure TSynEditUndoList.EnsureMaxEntries; var Item: TSynEditUndoGroup; begin if fItems.Count > fMaxUndoActions then begin fFullUndoImposible := TRUE; while fItems.Count > fMaxUndoActions do begin Item := TSynEditUndoGroup(fItems[0]); Item.Free; fItems.Delete(0); if fUnModifiedItem>=0 then dec(fUnModifiedItem); end; end; end; function TSynEditUndoList.GetCanUndo: boolean; begin Result := fItems.Count > 0; end; function TSynEditUndoList.GetCurrentReason: TSynEditorCommand; begin Result := FUndoGroup.Reason; end; function TSynEditUndoList.GetItemCount: integer; begin Result := fItems.Count; end; procedure TSynEditUndoList.SetCurrentReason(const AValue: TSynEditorCommand); begin if FUndoGroup.Reason = ecNone then FUndoGroup.Reason := AValue; end; procedure TSynEditUndoList.Lock; begin Inc(fLockCount); end; function TSynEditUndoList.PopItem: TSynEditUndoGroup; var iLast: integer; begin Result := nil; iLast := fItems.Count - 1; if iLast >= 0 then begin Result := TSynEditUndoGroup(fItems[iLast]); fItems.Delete(iLast); if fUnModifiedItem>fItems.Count then fUnModifiedItem:=-1; end; end; procedure TSynEditUndoList.SetMaxUndoActions(Value: integer); begin if Value < 0 then Value := 0; if Value <> fMaxUndoActions then begin fMaxUndoActions := Value; EnsureMaxEntries; end; end; function TSynEditUndoList.RealCount: Integer; begin Result := fItems.Count; if (FInGroupCount > 0) and FUndoGroup.HasUndoInfo then Result := Result + 1; end; procedure TSynEditUndoList.Unlock; begin if fLockCount > 0 then Dec(fLockCount); end; function TSynEditUndoList.IsLocked: Boolean; begin Result := fLockCount > 0; end; procedure TSynEditUndoList.MarkTopAsUnmodified; begin fUnModifiedItem := RealCount; end; procedure TSynEditUndoList.ForceGroupEnd; begin FForceGroupEnd := True; end; function TSynEditUndoList.IsTopMarkedAsUnmodified: boolean; begin Result := (RealCount = fUnModifiedItem); end; function TSynEditUndoList.UnModifiedMarkerExists: boolean; begin Result := fUnModifiedItem >= 0; end; { TSynEditUndoItem } function TSynEditUndoItem.IsEqualContent(AnItem: TSynEditUndoItem): Boolean; begin Result := False; end; function TSynEditUndoItem.IsEqual(AnItem: TSynEditUndoItem): Boolean; begin Result := (ClassType = AnItem.ClassType); if Result then Result := Result and IsEqualContent(AnItem); end; function TSynEditUndoItem.DebugString: String; begin Result := ''; end; function TSynEditUndoItem.IsCaretInfo: Boolean; begin Result := False; end; (* function TSynEditUndoItem.ChangeStartPos: TPoint; begin if (fChangeStartPos.Y < fChangeEndPos.Y) or ((fChangeStartPos.Y = fChangeEndPos.Y) and (fChangeStartPos.X < fChangeEndPos.X)) then result := fChangeStartPos else result := fChangeEndPos; end; function TSynEditUndoItem.ChangeEndPos: TPoint; begin if (fChangeStartPos.Y < fChangeEndPos.Y) or ((fChangeStartPos.Y = fChangeEndPos.Y) and (fChangeStartPos.X < fChangeEndPos.X)) then result := fChangeEndPos else result := fChangeStartPos; end; *) { TSynEditUndoGroup } procedure TSynEditUndoGroup.Grow; begin FCapacity := FCapacity + Max(10, FCapacity Div 8); SetLength(FItems, FCapacity); end; function TSynEditUndoGroup.HasUndoInfo: Boolean; var i: Integer; begin i := 0; while i < FCount do if FItems[i].IsCaretInfo then inc(i) else exit(true); Result := False; end; procedure TSynEditUndoGroup.Append(AnUndoGroup: TSynEditUndoItem); var i: Integer; begin i := FCount - 1; while (i >= 0) and FItems[i].IsCaretInfo do dec(i); inc(i); Insert(i, AnUndoGroup); end; procedure TSynEditUndoGroup.TranferTo(AnUndoGroup: TSynEditUndoGroup); begin AnUndoGroup.Assign(self); FCount := 0; // Do not clear; that would free the items end; function TSynEditUndoGroup.CanMergeWith(AnUndoGroup: TSynEditUndoGroup): Boolean; begin // Check if the other group can be merged to the START of this node if AnUndoGroup.Count = 0 then exit(True); Result := (FReason <> ecNone) and (AnUndoGroup.Reason = FReason) and Items[0].IsCaretInfo and AnUndoGroup.Items[AnUndoGroup.Count - 1].IsEqual(Items[0]); end; procedure TSynEditUndoGroup.MergeWith(AnUndoGroup: TSynEditUndoGroup); begin // Merge other group to start AnUndoGroup.Pop.Free; if AnUndoGroup.Count > 0 then begin fItems[0].Free; fItems[0] := AnUndoGroup.Pop; end; while AnUndoGroup.Count > 0 do Insert(0, AnUndoGroup.Pop); end; function TSynEditUndoGroup.GetItem(Index: Integer): TSynEditUndoItem; begin Result := FItems[Index]; end; constructor TSynEditUndoGroup.Create; begin FCount := 0; FCapacity := 0; end; destructor TSynEditUndoGroup.Destroy; begin Clear; FItems := nil; inherited Destroy; end; procedure TSynEditUndoGroup.Assign(AnUndoGroup: TSynEditUndoGroup); begin Clear; FCapacity := AnUndoGroup.Count; FCount := FCapacity; SetLength(FItems, FCapacity); if FCapacity = 0 then exit; System.Move(AnUndoGroup.FItems[0], FItems[0], FCapacity * SizeOf(TSynEditUndoItem)); FReason := AnUndoGroup.Reason; end; procedure TSynEditUndoGroup.Add(AnItem: TSynEditUndoItem); begin if (FCount > 0) and AnItem.IsCaretInfo and FItems[FCount - 1].IsCaretInfo then begin FItems[FCount - 1].Free; FItems[FCount - 1] := AnItem; exit; end; if FCount >= FCapacity then Grow; FItems[FCount] := AnItem; inc (FCount); end; procedure TSynEditUndoGroup.Clear; begin while FCount > 0 do begin dec(FCount); FItems[FCount].Free; end; if FCapacity > 100 then begin FCapacity := 100; SetLength(FItems, FCapacity); end; FReason := ecNone; end; procedure TSynEditUndoGroup.Insert(AIndex: Integer; AnItem: TSynEditUndoItem); begin if FCount >= FCapacity then Grow; If AIndex < FCount then System.Move(FItems[AIndex], FItems[AIndex+1], (FCount - AIndex) * SizeOf(TSynEditUndoItem)); FItems[AIndex] := AnItem; inc (FCount); end; function TSynEditUndoGroup.Pop: TSynEditUndoItem; begin if FCount <= 0 then exit(nil); dec(FCount); Result := FItems[FCount]; end; { TSynEditStorageMem } function TSynEditStorageMem.GetItemPointer(Index: Integer): Pointer; begin Result := Pointer(FMem + Index * ItemSize); end; procedure TSynEditStorageMem.SetCapacity(const AValue: Integer); begin if FCapacity = AValue then exit; FMem := ReallocMem(FMem, AValue * ItemSize); if AValue > FCapacity then FillChar((FMem+FCapacity*ItemSize)^, (AValue-FCapacity)*ItemSize, 0); FCapacity := AValue; end; procedure TSynEditStorageMem.SetCount(const AValue: Integer); begin FCount := AValue; end; constructor TSynEditStorageMem.Create; begin FCapacity := 0; FCount := 0; end; destructor TSynEditStorageMem.Destroy; begin SetCount(0); SetCapacity(0); inherited Destroy; end; procedure TSynEditStorageMem.InsertRows(AIndex, ACount: Integer); begin if (AIndex < 0) or (AIndex > Count) then ListIndexOutOfBounds(AIndex); if Capacity < Count + ACount then SetCapacity(Count + ACount); if AIndex < Count then Move(AIndex, AIndex + ACount, Count - AIndex); Count := Count + ACount; end; procedure TSynEditStorageMem.DeleteRows(AIndex, ACount: Integer); var LinesAfter: Integer; begin if (AIndex < 0) or (AIndex + ACount > Count) then ListIndexOutOfBounds(AIndex); LinesAfter := Count - (AIndex + ACount); if LinesAfter > 0 then Move(AIndex + ACount, AIndex, LinesAfter); Count := Count - ACount; if (Capacity > 16) and (Capacity > Count * 2) then Capacity := Capacity - (Count div 2); end; procedure TSynEditStorageMem.Move(AFrom, ATo, ALen: Integer); var len: Integer; begin if ATo < AFrom then begin Len := Min(ALen, AFrom-ATo); System.Move((FMem+AFrom*ItemSize)^, (FMem+ATo*ItemSize)^, Alen*ItemSize); FillChar((FMem+(AFrom+ALen-Len)*ItemSize)^, Len*ItemSize, 0); end else begin Len := Min(ALen, ATo-AFrom); System.Move((FMem+AFrom*ItemSize)^, (FMem+ATo*ItemSize)^, Alen*ItemSize); FillChar((FMem+AFrom*ItemSize)^, Len*ItemSize, 0); end; end; { TSynManagedStorageMem } procedure TSynManagedStorageMem.LineTextChanged(AIndex: Integer); begin // empty base class end; procedure TSynManagedStorageMem.InsertedLines(AIndex, ACount: Integer); begin // empty base class end; procedure TSynManagedStorageMem.DeletedLines(AIndex, ACount: Integer); begin // empty base class end; { TSynManagedStorageMemList } function TSynManagedStorageMemList.GetStorageMems(Index: Pointer): TSynManagedStorageMem; var i: Integer; begin Result := nil; i := length(FClassList); while (i > 0) and (Result = nil) do begin dec(i); if FClassList[i] = Index then Result := FStorageMemList[i]; end; end; procedure TSynManagedStorageMemList.SetStorageMems(Index: Pointer; const AValue: TSynManagedStorageMem); var i, j: Integer; begin i := length(FClassList) - 1; while (i >= 0) and (FClassList[i] <> Index) do dec(i); if i < 0 then begin if AValue = nil then begin debugln('Removing none existent range'); exit; end; j := length(FClassList); SetLength(FClassList, j + 1); SetLength(FStorageMemList, j + 1); FClassList[j] := Index; FStorageMemList[j] := AValue; end else begin if AValue <> nil then DebugLn(['TSynEditStringMemory.SetRange - Overwriting old range at index=', i, ' index=', dbgs(Index)]); FStorageMemList[i] := AValue; if AValue = nil then begin for j := i to length(FClassList) - 2 do begin FClassList[j] := FClassList[j+1]; FStorageMemList[j] := FStorageMemList[j+1]; end; SetLength(FClassList, length(FClassList) - 1); SetLength(FStorageMemList, length(FStorageMemList) - 1); end; end; end; procedure TSynManagedStorageMemList.SetChildCapacities(const AValue: Integer); var i: Integer; begin for i := 0 to high(FStorageMemList) do FStorageMemList[i].Capacity := AValue; end; procedure TSynManagedStorageMemList.SetChildCounts(const AValue: Integer); var i: Integer; begin for i := 0 to high(FStorageMemList) do FStorageMemList[i].Count := AValue; end; procedure TSynManagedStorageMemList.ChildInsertRows(AIndex, ACount: Integer); var i: Integer; begin for i := 0 to high(FStorageMemList) do FStorageMemList[i].InsertRows(AIndex, ACount); end; procedure TSynManagedStorageMemList.ChildDeleteRows(AIndex, ACount: Integer); var i: Integer; begin for i := 0 to high(FStorageMemList) do FStorageMemList[i].DeleteRows(AIndex, ACount); end; procedure TSynManagedStorageMemList.CallMove(AFrom, ATo, ALen: Integer); var i: Integer; begin for i := 0 to high(FStorageMemList) do FStorageMemList[i].Move(AFrom, ATo, ALen); end; procedure TSynManagedStorageMemList.CallLineTextChanged(AIndex: Integer); var i: Integer; begin for i := 0 to high(FStorageMemList) do FStorageMemList[i].LineTextChanged(AIndex); end; procedure TSynManagedStorageMemList.CallInsertedLines(AIndex, ACount: Integer); var i: Integer; begin for i := 0 to high(FStorageMemList) do FStorageMemList[i].InsertedLines(AIndex, ACount); end; procedure TSynManagedStorageMemList.CallDeletedLines(AIndex, ACount: Integer); var i: Integer; begin for i := 0 to high(FStorageMemList) do FStorageMemList[i].DeletedLines(AIndex, ACount); end; end.