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{-------------------------------------------------------------------------------
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.
The Original Code is: SynEditTextBuffer.pas, released 2000-04-07.
The Original Code is based on parts of mwCustomEdit.pas by Martin Waldenburg,
part of the mwEdit component suite.
Portions created by Martin Waldenburg are Copyright (C) 1998 Martin Waldenburg.
All Rights Reserved.
Contributors to the SynEdit and mwEdit projects are listed in the
Contributors.txt file.
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.
$Id: synedittextbuffer.pp 48478 2015-03-24 17:50:59Z juha $
You may retrieve the latest version of this file at the SynEdit home page,
located at http://SynEdit.SourceForge.net
Known Issues:
-------------------------------------------------------------------------------}
unit SynEditTextBuffer;
{$I synedit.inc}
{$IFOPT C+}
{$DEFINE SynAssert}
{$ENDIF}
{$IFDEF SynUndoDebug} {$Define SynUndoDebugItems} {$ENDIF}
interface
uses
Classes, SysUtils, Graphics, LCLProc, LCLIntf, LCLType,
SynEditTypes, LazSynEditText, SynEditTextBase, SynEditMiscProcs, SynEditMiscClasses,
SynEditHighlighter;
type
TSynEditFlagsClass = class end; // For Register
TSynEditStringFlag = (
sfModified, // a line is modified and not saved after
sfSaved // a line is modified and saved after
);
TSynEditStringFlags = set of TSynEditStringFlag;
PSynEditStringFlags = ^TSynEditStringFlags;
TStringListIndexEvent = procedure(Index: Integer) of object;
{ TLinesModifiedNotificationList }
TLinesModifiedNotificationList = Class(TSynMethodList)
public
Procedure CallRangeNotifyEvents(Sender: TSynEditStrings; aIndex, aNewCount, aOldCount: Integer);
end;
{ TLineRangeNotificationList }
TLineRangeNotificationList = Class(TSynMethodList)
public
Procedure CallRangeNotifyEvents(Sender: TSynEditStrings; aIndex, aCount: Integer);
end;
{ TLineEditNotificationList }
TLineEditNotificationList = Class(TSynMethodList)
public
Procedure CallRangeNotifyEvents(Sender: TSynEditStrings;
aLinePos, aBytePos, aCount, aLineBrkCnt: Integer; aText: String);
end;
{ TSynEditStringMemory }
TSynEditStringMemory = class(TSynEditStorageMem)
private
FRangeList: TSynManagedStorageMemList;
FRangeListLock: Integer;
function GetFlags(Index: Integer): TSynEditStringFlags;
function GetObject(Index: Integer): TObject;
function GetRange(Index: Pointer): TSynManagedStorageMem;
function GetString(Index: Integer): String;
procedure SetFlags(Index: Integer; const AValue: TSynEditStringFlags);
procedure SetObject(Index: Integer; const AValue: TObject);
procedure SetRange(Index: Pointer; const AValue: TSynManagedStorageMem);
procedure SetString(Index: Integer; const AValue: String);
protected
procedure Move(AFrom, ATo, ALen: Integer); override;
procedure SetCount(const AValue: Integer); override;
procedure SetCapacity(const AValue: Integer); override;
public
constructor Create;
destructor Destroy; override;
procedure InsertRows(AIndex, ACount: Integer); override;
procedure DeleteRows(AIndex, ACount: Integer); override;
function GetPChar(ALineIndex: Integer; out ALen: Integer): PChar; // experimental
property Strings[Index: Integer]: String read GetString write SetString; default;
property Objects[Index: Integer]: TObject read GetObject write SetObject;
property RangeList[Index: Pointer]: TSynManagedStorageMem read GetRange write SetRange;
property Flags[Index: Integer]: TSynEditStringFlags read GetFlags write SetFlags;
end;
TSynEditStringList = class;
{ TLazSynDisplayBuffer }
TLazSynDisplayBuffer = class(TLazSynDisplayViewEx)
private
FBuffer: TSynEditStringList;
FAtLineStart: Boolean;
public
constructor Create(ABuffer: TSynEditStringList);
procedure SetHighlighterTokensLine(ALine: TLineIdx; out ARealLine: TLineIdx); override;
function GetNextHighlighterToken(out ATokenInfo: TLazSynDisplayTokenInfo): Boolean; override;
function GetDrawDividerInfo: TSynDividerDrawConfigSetting; override;
function GetLinesCount: Integer; override;
function TextToViewIndex(AIndex: TLineIdx): TLineRange; override;
function ViewToTextIndex(AIndex: TLineIdx): TLineIdx; override;
end;
{ TSynEditStringList }
TSynEditStringList = class(TSynEditStrings)
private
FList: TSynEditStringMemory;
FDisplayView: TLazSynDisplayBuffer;
FAttachedSynEditList: TFPList;
FNotifyLists: Array [TSynEditNotifyReason] of TSynMethodList;
FCachedNotify: Boolean;
FCachedNotifyStart, FCachedNotifyCount: Integer;
FCachedNotifySender: TSynEditStrings;
FModifiedNotifyStart, FModifiedNotifyNewCount, FModifiedNotifyOldCount: Integer;
FIsInEditAction: Integer;
FIgnoreSendNotification: array [TSynEditNotifyReason] of Integer;
fDosFileFormat: boolean;
fIndexOfLongestLine: integer;
FRedoList: TSynEditUndoList;
FUndoList: TSynEditUndoList;
FIsUndoing, FIsRedoing: Boolean;
FIsInDecPaintLock: Boolean;
FModified: Boolean;
FTextChangeStamp: int64;
function GetAttachedSynEdits(Index: Integer): TSynEditBase;
function GetFlags(Index: Integer): TSynEditStringFlags;
procedure Grow;
procedure InsertItem(Index: integer; const S: string);
procedure SetFlags(Index: Integer; const AValue: TSynEditStringFlags);
procedure SetModified(const AValue: Boolean);
protected
function GetExpandedString(Index: integer): string; override;
function GetLengthOfLongestLine: integer; override;
function GetTextChangeStamp: int64; override;
function GetIsInEditAction: Boolean; override;
procedure IncIsInEditAction; override;
procedure DecIsInEditAction; override;
function GetRedoList: TSynEditUndoList; override;
function GetUndoList: 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;
procedure UndoRedoAdded(Sender: TObject);
procedure IgnoreSendNotification(AReason: TSynEditNotifyReason;
IncIgnore: Boolean); override;
function GetRange(Index: Pointer): TSynManagedStorageMem; override;
procedure PutRange(Index: Pointer; const ARange: TSynManagedStorageMem); override;
function Get(Index: integer): string; override;
function GetCapacity: integer; override;
function GetCount: integer; override;
procedure SetCount(const AValue: Integer);
function GetObject(Index: integer): TObject; override;
procedure Put(Index: integer; const S: string); override;
procedure PutObject(Index: integer; AObject: TObject); override;
procedure SetCapacity(NewCapacity: integer); override;
procedure MaybeSendSenrLinesModified; inline;
procedure SetUpdateState(Updating: Boolean; Sender: TObject); override;
procedure UndoEditLinesDelete(LogY, ACount: Integer);
procedure IncreaseTextChangeStamp;
procedure DoGetPhysicalCharWidths(Line: PChar; LineLen, Index: Integer; PWidths: PPhysicalCharWidth); override;
function LogicPosIsCombining(const AChar: PChar): Boolean; inline;
function GetDisplayView: TLazSynDisplayView; override;
public
constructor Create;
destructor Destroy; override;
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;
function GetPChar(ALineIndex: Integer; out ALen: Integer): PChar; override; // experimental
procedure MarkModified(AFirst, ALast: Integer);
procedure MarkSaved;
procedure AddGenericHandler(AReason: TSynEditNotifyReason;
AHandler: TMethod); override;
procedure RemoveGenericHandler(AReason: TSynEditNotifyReason;
AHandler: TMethod); override;
procedure SendNotification(AReason: TSynEditNotifyReason;
ASender: TSynEditStrings; aIndex, aCount: Integer); override;
procedure SendNotification(AReason: TSynEditNotifyReason;
ASender: TSynEditStrings; aIndex, aCount: Integer;
aBytePos: Integer; aLen: Integer; aTxt: String); override;
procedure SendNotification(AReason: TSynEditNotifyReason;
ASender: TObject); override;
procedure FlushNotificationCache; override;
procedure AttachSynEdit(AEdit: TSynEditBase);
procedure DetachSynEdit(AEdit: TSynEditBase);
function AttachedSynEditCount: Integer;
property AttachedSynEdits[Index: Integer]: TSynEditBase read GetAttachedSynEdits;
procedure CopyHanlders(OtherLines: TSynEditStringList; AOwner: TObject = nil);
procedure RemoveHanlders(AOwner: TObject);
procedure SendCachedNotify; // ToDO: review caching versus changes to topline and other values
public
property DosFileFormat: boolean read fDosFileFormat write fDosFileFormat;
property LengthOfLongestLine: integer read GetLengthOfLongestLine;
property Flags[Index: Integer]: TSynEditStringFlags read GetFlags
write SetFlags;
property Modified: Boolean read FModified write SetModified;
public
// Char bounds // 1 based (1 is the 1st char in the line)
function LogicPosAddChars(const ALine: String; ALogicalPos, ACount: integer;
AFlags: LPosFlags = []): Integer; override;
function LogicPosIsAtChar(const ALine: String; ALogicalPos: integer;
AFlags: LPosFlags = []): Boolean; override;
function LogicPosAdjustToChar(const ALine: String; ALogicalPos: integer;
AFlags: LPosFlags = []): Integer; override;
property UndoList: TSynEditUndoList read GetUndoList write fUndoList;
property RedoList: TSynEditUndoList read GetRedoList write fRedoList;
procedure EditInsert(LogX, LogY: Integer; AText: String); override;
function EditDelete(LogX, LogY, ByteLen: Integer): String; override;
function EditReplace(LogX, LogY, ByteLen: Integer; AText: String): 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;
public
PaintLockOwner: TSynEditBase;
end;
ESynEditStringList = class(Exception);
{end} //mh 2000-10-10
implementation
const
SListIndexOutOfBounds = 'Invalid stringlist index %d';
type
{ TSynEditUndoTxtInsert }
TSynEditUndoTxtInsert = class(TSynEditUndoItem)
private
FPosX, FPosY, FLen: Integer;
protected
function DebugString: String; override;
public
constructor Create(APosX, APosY, ALen: Integer);
function PerformUndo(Caller: TObject): Boolean; override;
end;
{ TSynEditUndoTxtDelete }
TSynEditUndoTxtDelete = class(TSynEditUndoItem)
private
FPosX, FPosY: Integer;
FText: String;
protected
function DebugString: String; override;
public
constructor Create(APosX, APosY: Integer; AText: String);
function PerformUndo(Caller: TObject): Boolean; override;
end;
{ TSynEditUndoTxtLineBreak }
TSynEditUndoTxtLineBreak = class(TSynEditUndoItem)
private
FPosY: Integer;
protected
function DebugString: String; override;
public
constructor Create(APosY: Integer);
function PerformUndo(Caller: TObject): Boolean; override;
end;
{ TSynEditUndoTxtLineJoin }
TSynEditUndoTxtLineJoin = class(TSynEditUndoItem)
private
FPosX, FPosY: Integer;
protected
function DebugString: String; override;
public
constructor Create(APosX, APosY: Integer);
function PerformUndo(Caller: TObject): Boolean; override;
end;
{ TSynEditUndoTxtLinesIns }
TSynEditUndoTxtLinesIns = class(TSynEditUndoItem)
private
FPosY, FCount: Integer;
protected
function DebugString: String; override;
public
constructor Create(ALine, ACount: Integer);
function PerformUndo(Caller: TObject): Boolean; override;
end;
{ TSynEditUndoTxtLinesDel }
TSynEditUndoTxtLinesDel = class(TSynEditUndoItem)
private
FPosY, FCount: Integer;
protected
function DebugString: String; override;
public
constructor Create(ALine, ACount: Integer);
function PerformUndo(Caller: TObject): Boolean; override;
end;
{ TLazSynDisplayBuffer }
constructor TLazSynDisplayBuffer.Create(ABuffer: TSynEditStringList);
begin
inherited Create;
FBuffer := ABuffer;
end;
procedure TLazSynDisplayBuffer.SetHighlighterTokensLine(ALine: TLineIdx; out ARealLine: TLineIdx);
begin
CurrentTokenLine := ALine;
ARealLine := ALine;
FAtLineStart := True;
end;
function TLazSynDisplayBuffer.GetNextHighlighterToken(out ATokenInfo: TLazSynDisplayTokenInfo): Boolean;
begin
Result := False;
if not Initialized then exit;
if CurrentTokenHighlighter = nil then begin
Result := FAtLineStart;
if not Result then exit;
ATokenInfo.TokenStart := FBuffer.GetPChar(CurrentTokenLine, ATokenInfo.TokenLength);
ATokenInfo.TokenAttr := nil;
FAtLineStart := False;
end
else begin
if FAtLineStart then
CurrentTokenHighlighter.StartAtLineIndex(CurrentTokenLine);
FAtLineStart := False;
Result := not CurrentTokenHighlighter.GetEol;
if not Result then begin
ATokenInfo.TokenStart := nil;
ATokenInfo.TokenLength := 0;
ATokenInfo.TokenAttr := CurrentTokenHighlighter.GetEndOfLineAttribute;
Result := ATokenInfo.TokenAttr <> nil;
exit;
end;
CurrentTokenHighlighter.GetTokenEx(ATokenInfo.TokenStart, ATokenInfo.TokenLength);
ATokenInfo.TokenAttr := CurrentTokenHighlighter.GetTokenAttribute;
CurrentTokenHighlighter.Next;
end;
end;
function TLazSynDisplayBuffer.GetDrawDividerInfo: TSynDividerDrawConfigSetting;
begin
if CurrentTokenHighlighter <> nil then
Result := CurrentTokenHighlighter.DrawDivider[CurrentTokenLine]
else
Result.Color := clNone;
end;
function TLazSynDisplayBuffer.GetLinesCount: Integer;
begin
Result := FBuffer.Count;
end;
function TLazSynDisplayBuffer.TextToViewIndex(AIndex: TLineIdx): TLineRange;
begin
Result.Top := AIndex;
Result.Bottom := AIndex;
end;
function TLazSynDisplayBuffer.ViewToTextIndex(AIndex: TLineIdx): TLineIdx;
begin
Result := AIndex;
end;
{ TSynEditUndoTxtInsert }
function TSynEditUndoTxtInsert.DebugString: String;
begin
Result := 'X='+dbgs(FPosX) + ' Y='+ dbgs(FPosY) + ' len=' + dbgs(FLen);
end;
constructor TSynEditUndoTxtInsert.Create(APosX, APosY, ALen: Integer);
begin
FPosX := APosX;
FPosY := APosY;
FLen := ALen;
{$IFDEF SynUndoDebugItems}debugln(['--- Undo Insert ',DbgSName(self), ' ', dbgs(Self), ' - ', DebugString]);{$ENDIF}
end;
function TSynEditUndoTxtInsert.PerformUndo(Caller: TObject): Boolean;
begin
Result := Caller is TSynEditStringList;
{$IFDEF SynUndoDebugItems}if Result then debugln(['--- Undo Perform ',DbgSName(self), ' ', dbgs(Self), ' - ', DebugString]);{$ENDIF}
if Result then
TSynEditStringList(Caller).EditDelete(FPosX, FPosY, FLen);
end;
{ TSynEditUndoTxtDelete }
function TSynEditUndoTxtDelete.DebugString: String;
begin
Result := 'X='+dbgs(FPosX) + ' Y='+ dbgs(FPosY) + ' text=' + FText;
end;
constructor TSynEditUndoTxtDelete.Create(APosX, APosY: Integer; AText: String);
begin
FPosX := APosX;
FPosY := APosY;
FText := AText;
{$IFDEF SynUndoDebugItems}debugln(['--- Undo Insert ',DbgSName(self), ' ', dbgs(Self), ' - ', DebugString]);{$ENDIF}
end;
function TSynEditUndoTxtDelete.PerformUndo(Caller: TObject): Boolean;
begin
Result := Caller is TSynEditStringList;
{$IFDEF SynUndoDebugItems}if Result then debugln(['--- Undo Perform ',DbgSName(self), ' ', dbgs(Self), ' - ', DebugString]);{$ENDIF}
if Result then
TSynEditStringList(Caller).EditInsert(FPosX, FPosY, FText);
end;
{ TSynEditUndoTxtLineBreak }
function TSynEditUndoTxtLineBreak.DebugString: String;
begin
Result := ' Y='+ dbgs(FPosY);
end;
constructor TSynEditUndoTxtLineBreak.Create(APosY: Integer);
begin
FPosY := APosY;
{$IFDEF SynUndoDebugItems}debugln(['--- Undo Insert ',DbgSName(self), ' ', dbgs(Self), ' - ', DebugString]);{$ENDIF}
end;
function TSynEditUndoTxtLineBreak.PerformUndo(Caller: TObject): Boolean;
begin
Result := Caller is TSynEditStringList;
{$IFDEF SynUndoDebugItems}if Result then debugln(['--- Undo Perform ',DbgSName(self), ' ', dbgs(Self), ' - ', DebugString]);{$ENDIF}
if Result then
TSynEditStringList(Caller).EditLineJoin(FPosY)
end;
{ TSynEditUndoTxtLineJoin }
function TSynEditUndoTxtLineJoin.DebugString: String;
begin
Result := 'X='+dbgs(FPosX) + ' Y='+ dbgs(FPosY);
end;
constructor TSynEditUndoTxtLineJoin.Create(APosX, APosY: Integer);
begin
FPosX := APosX;
FPosY := APosY;
{$IFDEF SynUndoDebugItems}debugln(['--- Undo Insert ',DbgSName(self), ' ', dbgs(Self), ' - ', DebugString]);{$ENDIF}
end;
function TSynEditUndoTxtLineJoin.PerformUndo(Caller: TObject): Boolean;
begin
Result := Caller is TSynEditStringList;
{$IFDEF SynUndoDebugItems}if Result then debugln(['--- Undo Perform ',DbgSName(self), ' ', dbgs(Self), ' - ', DebugString]);{$ENDIF}
if Result then
TSynEditStringList(Caller).EditLineBreak(FPosX, FPosY)
end;
{ TSynEditUndoTxtLinesIns }
function TSynEditUndoTxtLinesIns.DebugString: String;
begin
Result := 'Y='+dbgs(FPosY) + ' Cnt='+ dbgs(FCount);
end;
constructor TSynEditUndoTxtLinesIns.Create(ALine, ACount: Integer);
begin
FPosY := ALine;
FCount := ACount;
{$IFDEF SynUndoDebugItems}debugln(['--- Undo Insert ',DbgSName(self), ' ', dbgs(Self), ' - ', DebugString]);{$ENDIF}
end;
function TSynEditUndoTxtLinesIns.PerformUndo(Caller: TObject): Boolean;
begin
Result := Caller is TSynEditStringList;
{$IFDEF SynUndoDebugItems}if Result then debugln(['--- Undo Perform ',DbgSName(self), ' ', dbgs(Self), ' - ', DebugString]);{$ENDIF}
if Result then
TSynEditStringList(Caller).UndoEditLinesDelete(FPosY, FCount)
end;
{ TSynEditUndoTxtLinesDel }
function TSynEditUndoTxtLinesDel.DebugString: String;
begin
Result := 'Y='+dbgs(FPosY) + ' Cnt='+ dbgs(FCount);
end;
constructor TSynEditUndoTxtLinesDel.Create(ALine, ACount: Integer);
begin
FPosY := ALine;
FCount := ACount;
{$IFDEF SynUndoDebugItems}debugln(['--- Undo Insert ',DbgSName(self), ' ', dbgs(Self), ' - ', DebugString]);{$ENDIF}
end;
function TSynEditUndoTxtLinesDel.PerformUndo(Caller: TObject): Boolean;
begin
Result := Caller is TSynEditStringList;
{$IFDEF SynUndoDebugItems}if Result then debugln(['--- Undo Perform ',DbgSName(self), ' ', dbgs(Self), ' - ', DebugString]);{$ENDIF}
if Result then
TSynEditStringList(Caller).EditLinesInsert(FPosY, FCount)
end;
{ TSynEditStringList }
procedure ListIndexOutOfBounds(Index: integer);
begin
raise ESynEditStringList.CreateFmt(SListIndexOutOfBounds, [Index]);
end;
constructor TSynEditStringList.Create;
var
r: TSynEditNotifyReason;
begin
fList := TSynEditStringMemory.Create;
FDisplayView := TLazSynDisplayBuffer.Create(Self);
FAttachedSynEditList := TFPList.Create;
FUndoList := TSynEditUndoList.Create;
fUndoList.OnAddedUndo := @UndoRedoAdded;
FRedoList := TSynEditUndoList.Create;
fRedoList.OnAddedUndo := @UndoRedoAdded;
FIsUndoing := False;
FIsRedoing := False;
FModified := False;
FIsInEditAction := 0;
for r := low(TSynEditNotifyReason) to high(TSynEditNotifyReason)
do case r of
senrLineCount, senrLineChange, senrHighlightChanged:
FNotifyLists[r] := TLineRangeNotificationList.Create;
senrLinesModified:
FNotifyLists[r] := TLinesModifiedNotificationList.Create;
senrEditAction:
FNotifyLists[r] := TLineEditNotificationList.Create;
else
FNotifyLists[r] := TSynMethodList.Create;
end;
for r := low(TSynEditNotifyReason) to high(TSynEditNotifyReason) do
FIgnoreSendNotification[r] := 0;
inherited Create;
fDosFileFormat := TRUE;
{begin} //mh 2000-10-19
fIndexOfLongestLine := -1;
{end} //mh 2000-10-19
end;
destructor TSynEditStringList.Destroy;
var
i: TSynEditNotifyReason;
begin
inherited Destroy;
SetCount(0);
SetCapacity(0);
for i := low(TSynEditNotifyReason) to high(TSynEditNotifyReason) do
FreeAndNil(FNotifyLists[i]);
FreeAndNil(FUndoList);
FreeAndNil(FRedoList);
FreeAndNil(FAttachedSynEditList);
FreeAndNil(FDisplayView);
FreeAndNil(fList);
end;
function TSynEditStringList.Add(const S: string): integer;
begin
BeginUpdate;
Result := Count;
InsertItem(Result, S);
SendNotification(senrLineCount, self, Result, Count - Result);
EndUpdate;
end;
procedure TSynEditStringList.AddStrings(AStrings: TStrings);
var
i, FirstAdded: integer;
begin
{begin} //mh 2000-10-19
if AStrings.Count > 0 then begin
fIndexOfLongestLine := -1;
BeginUpdate;
try
i := Count + AStrings.Count;
if i > Capacity then
SetCapacity((i + 15) and (not 15));
FirstAdded := Count;
for i := 0 to AStrings.Count - 1 do begin
SetCount(Count + 1);
with fList do begin
Strings[Count-1] := AStrings[i];
Objects[Count-1] := AStrings.Objects[i];
end;
Flags[Count-1] := [];
end;
SendNotification(senrLineCount, self, FirstAdded, Count - FirstAdded);
finally
EndUpdate;
end;
end;
{end} //mh 2000-10-19
end;
procedure TSynEditStringList.Clear;
var
c: Integer;
begin
c := Count;
if c <> 0 then begin
BeginUpdate;
SetCount(0);
SetCapacity(0);
SendNotification(senrLineCount, self, 0, -c);
SendNotification(senrCleared, Self);
EndUpdate;
end;
fIndexOfLongestLine := -1;
end;
procedure TSynEditStringList.Delete(Index: integer);
begin
// Ensure correct index, so DeleteLines will not throw exception
if (Index < 0) or (Index >= Count) then
ListIndexOutOfBounds(Index);
BeginUpdate;
FList.DeleteRows(Index, 1);
IncreaseTextChangeStamp;
fIndexOfLongestLine := -1;
SendNotification(senrLineCount, self, Index, -1);
EndUpdate;
end;
procedure TSynEditStringList.DeleteLines(Index, NumLines: integer);
begin
if NumLines > 0 then begin
// Ensure correct index, so DeleteLines will not throw exception
if (Index < 0) or (Index + NumLines > Count) then
ListIndexOutOfBounds(Index);
BeginUpdate;
FList.DeleteRows(Index, NumLines);
IncreaseTextChangeStamp;
SendNotification(senrLineCount, self, Index, -NumLines);
EndUpdate;
end;
end;
function TSynEditStringList.GetFlags(Index: Integer): TSynEditStringFlags;
begin
if (Index >= 0) and (Index < Count) then
Result := FList.Flags[Index]
else
Result := [];
end;
function TSynEditStringList.GetAttachedSynEdits(Index: Integer): TSynEditBase;
begin
Result := TSynEditBase(FAttachedSynEditList[Index]);
end;
function TSynEditStringList.Get(Index: integer): string;
begin
if (Index >= 0) and (Index < Count) then
Result := fList[Index]
else
Result := '';
end;
function TSynEditStringList.GetCapacity: integer;
begin
Result := fList.Capacity;
end;
function TSynEditStringList.GetCount: integer;
begin
Result := FList.Count;
end;
procedure TSynEditStringList.SetCount(const AValue: Integer);
begin
IncreaseTextChangeStamp;
fList.Count := AValue;
end;
{begin} //mh 2000-10-19
function TSynEditStringList.GetExpandedString(Index: integer): string;
begin
if (Index >= 0) and (Index < Count) then begin
Result := FList[Index];
end else
Result := '';
end;
function TSynEditStringList.GetLengthOfLongestLine: integer; //mh 2000-10-19
var
i, j, MaxLen: integer;
begin
if fIndexOfLongestLine < 0 then begin
MaxLen := 0;
if Count > 0 then begin
for i := 0 to Count - 1 do begin
j := length(FList[i]);
if j > MaxLen then begin
MaxLen := j;
fIndexOfLongestLine := i;
end;
end;
end;
end;
if (fIndexOfLongestLine >= 0) and (fIndexOfLongestLine < Count) then
Result := length(FList[fIndexOfLongestLine])
else
Result := 0;
end;
function TSynEditStringList.GetTextChangeStamp: int64;
begin
Result := FTextChangeStamp;
end;
function TSynEditStringList.GetIsInEditAction: Boolean;
begin
Result := FIsInEditAction > 0;
end;
procedure TSynEditStringList.IncIsInEditAction;
begin
inc(FIsInEditAction);
end;
procedure TSynEditStringList.DecIsInEditAction;
begin
dec(FIsInEditAction);
end;
function TSynEditStringList.GetRedoList: TSynEditUndoList;
begin
Result := fRedoList;
end;
function TSynEditStringList.GetUndoList: TSynEditUndoList;
begin
Result := fUndoList;
end;
function TSynEditStringList.GetCurUndoList: TSynEditUndoList;
begin
if FIsUndoing then
Result := fRedoList
else
Result := fUndoList;
end;
procedure TSynEditStringList.SetIsUndoing(const AValue: Boolean);
begin
FIsUndoing := AValue;
end;
function TSynEditStringList.GetIsUndoing: Boolean;
begin
Result := FIsUndoing;
end;
procedure TSynEditStringList.SetIsRedoing(const AValue: Boolean);
begin
FIsRedoing := AValue;
end;
function TSynEditStringList.GetIsRedoing: Boolean;
begin
Result := FIsRedoing;
end;
procedure TSynEditStringList.UndoRedoAdded(Sender: TObject);
begin
// we have to clear the redo information, since adding undo info removes
// the necessary context to undo earlier edit actions
if (Sender = fUndoList) and not (fUndoList.IsInsideRedo) then
fRedoList.Clear;
if fUndoList.UnModifiedMarkerExists then
Modified := not fUndoList.IsTopMarkedAsUnmodified
else if fRedoList.UnModifiedMarkerExists then
Modified := not fRedoList.IsTopMarkedAsUnmodified
else
Modified := fUndoList.CanUndo or fUndoList.FullUndoImpossible;
SendNotification(senrUndoRedoAdded, Sender);
end;
// Maps the Physical Width (ScreenCells) to each character
// Multibyte Chars have thw width on the first byte, and a 0 Width for all other bytes
procedure TSynEditStringList.DoGetPhysicalCharWidths(Line: PChar;
LineLen, Index: Integer; PWidths: PPhysicalCharWidth);
var
i: Integer;
begin
if not IsUtf8 then begin
for i := 0 to LineLen-1 do
PWidths[i] := 1;
exit;
end;
for i := 0 to LineLen-1 do begin
case Line^ of
#$00..#$7F:
PWidths^ := 1;
#$80..#$BF:
PWidths^ := 0;
else
if LogicPosIsCombining(Line) then
PWidths^ := 0
else
PWidths^ := 1;
//#$CC:
// if ((Line+1)^ in [#$80..#$FF]) and (i>0)
// then PWidths^ := 0 // Combining Diacritical Marks (belongs to previos char) 0300-036F
// else PWidths^ := 1;
//#$CD:
// if ((Line+1)^ in [#$00..#$AF]) and (i>0)
// then PWidths^ := 0 // Combining Diacritical Marks
// else PWidths^ := 1;
//#$E1:
// if (((Line+1)^ = #$B7) and ((Line+2)^ in [#$80..#$BF])) and (i>0)
// then PWidths^ := 0 // Combining Diacritical Marks Supplement 1DC0-1DFF
// else PWidths^ := 1;
//#$E2:
// if (((Line+1)^ = #$83) and ((Line+2)^ in [#$90..#$FF])) and (i>0)
// then PWidths^ := 0 // Combining Diacritical Marks for Symbols 20D0-20FF
// else PWidths^ := 1;
//#$EF:
// if (((Line+1)^ = #$B8) and ((Line+2)^ in [#$A0..#$AF])) and (i>0)
// then PWidths^ := 0 // Combining half Marks FE20-FE2F
// else PWidths^ := 1;
//else
// PWidths^ := 1;
end;
inc(PWidths);
inc(Line);
end;
end;
function TSynEditStringList.LogicPosIsCombining(const AChar: PChar): Boolean;
begin
Result := (
( (AChar[0] = #$CC) ) or // Combining Diacritical Marks (belongs to previos char) 0300-036F
( (AChar[0] = #$CD) and (AChar[1] in [#$80..#$AF]) ) or // Combining Diacritical Marks
( (AChar[0] = #$D8) and (AChar[1] in [#$90..#$9A]) ) or // Arabic 0610 (d890)..061A (d89a)
( (AChar[0] = #$D9) and (AChar[1] in [#$8b..#$9f, #$B0]) ) or // Arabic 064B (d98b)..065F (d99f) // 0670 (d9b0)
( (AChar[0] = #$DB) and (AChar[1] in [#$96..#$9C, #$9F..#$A4, #$A7..#$A8, #$AA..#$AD]) ) or // Arabic 06D6 (db96).. .. ..06EA (dbaa)
( (AChar[0] = #$E0) and (AChar[1] = #$A3) and (AChar[2] in [#$A4..#$BE]) ) or // Arabic 08E4 (e0a3a4) ..08FE (e0a3be)
( (AChar[0] = #$E1) and (AChar[1] = #$B7) ) or // Combining Diacritical Marks Supplement 1DC0-1DFF
( (AChar[0] = #$E2) and (AChar[1] = #$83) and (AChar[2] in [#$90..#$FF]) ) or // Combining Diacritical Marks for Symbols 20D0-20FF
( (AChar[0] = #$EF) and (AChar[1] = #$B8) and (AChar[2] in [#$A0..#$AF]) ) // Combining half Marks FE20-FE2F
);
end;
function TSynEditStringList.GetDisplayView: TLazSynDisplayView;
begin
Result := FDisplayView;
end;
procedure TSynEditStringList.AttachSynEdit(AEdit: TSynEditBase);
begin
if FAttachedSynEditList.IndexOf(AEdit) < 0 then
FAttachedSynEditList.Add(AEdit);
end;
procedure TSynEditStringList.DetachSynEdit(AEdit: TSynEditBase);
begin
FAttachedSynEditList.Remove(AEdit);
end;
function TSynEditStringList.AttachedSynEditCount: Integer;
begin
Result := FAttachedSynEditList.Count;
end;
function TSynEditStringList.GetObject(Index: integer): TObject;
begin
if (Index >= 0) and (Index < Count) then
Result := fList.Objects[Index]
else
Result := nil;
end;
function TSynEditStringList.GetRange(Index: Pointer): TSynManagedStorageMem;
begin
Result := FList.RangeList[Index];
end;
procedure TSynEditStringList.Grow;
var
Delta: Integer;
begin
if Capacity > 64 then
Delta := Capacity div 4
else
Delta := 16;
SetCapacity(Capacity + Delta);
end;
procedure TSynEditStringList.Insert(Index: integer; const S: string);
var
OldCnt : integer;
begin
if (Index < 0) or (Index > Count) then
ListIndexOutOfBounds(Index);
BeginUpdate;
OldCnt:=Count;
InsertItem(Index, S);
SendNotification(senrLineCount, self, Index, Count - OldCnt);
EndUpdate;
end;
procedure TSynEditStringList.InsertItem(Index: integer; const S: string);
begin
// Ensure correct index, so DeleteLines will not throw exception
if (Index < 0) or (Index > Count) then
ListIndexOutOfBounds(Index);
BeginUpdate;
if Count = Capacity then
Grow;
FList.InsertRows(Index, 1);
IncreaseTextChangeStamp;
fIndexOfLongestLine := -1; //mh 2000-10-19
fList[Index] := S;
FList.Objects[Index] := nil;
Flags[Index] := [];
EndUpdate;
end;
{begin} // DJLP 2000-11-01
procedure TSynEditStringList.InsertLines(Index, NumLines: integer);
begin
if NumLines > 0 then begin
// Ensure correct index, so DeleteLines will not throw exception
if (Index < 0) or (Index > Count) then
ListIndexOutOfBounds(Index);
BeginUpdate;
try
if Capacity<Count + NumLines then
SetCapacity(Count + NumLines);
FList.InsertRows(Index, NumLines);
IncreaseTextChangeStamp;
SendNotification(senrLineCount, self, Index, NumLines);
finally
EndUpdate;
end;
end;
end;
procedure TSynEditStringList.InsertStrings(Index: integer;
NewStrings: TStrings);
var
i, Cnt: integer;
begin
Cnt := NewStrings.Count;
if Cnt > 0 then begin
BeginUpdate;
try
InsertLines(Index, Cnt);
for i := 0 to Cnt - 1 do
Strings[Index + i] := NewStrings[i];
finally
EndUpdate;
end;
end;
end;
function TSynEditStringList.GetPChar(ALineIndex: Integer; out ALen: Integer): PChar;
begin
Result := FList.GetPChar(ALineIndex, ALen);
end;
{end} // DJLP 2000-11-01
procedure TSynEditStringList.Put(Index: integer; const S: string);
begin
if (Index = 0) and (Count = 0) then
Add(S)
else begin
if (Index < 0) or (Index >= Count) then
ListIndexOutOfBounds(Index);
BeginUpdate;
fIndexOfLongestLine := -1;
FList[Index] := S;
IncreaseTextChangeStamp;
SendNotification(senrLineChange, self, Index, 1);
EndUpdate;
end;
end;
procedure TSynEditStringList.PutObject(Index: integer; AObject: TObject);
begin
if (Index < 0) or (Index >= Count) then
ListIndexOutOfBounds(Index);
if fList.Objects[Index] = AObject then exit;
BeginUpdate;
fList.Objects[Index]:= AObject;
EndUpdate;
end;
procedure TSynEditStringList.PutRange(Index: Pointer; const ARange: TSynManagedStorageMem);
begin
FList.RangeList[Index] := ARange;
end;
procedure TSynEditStringList.SetFlags(Index: Integer; const AValue: TSynEditStringFlags);
begin
FList.Flags[Index] := AValue;
end;
procedure TSynEditStringList.SetModified(const AValue: Boolean);
begin
if AValue then
IncreaseTextChangeStamp;
if FModified = AValue then exit;
FModified := AValue;
if not FModified then
begin
// the current state should be the unmodified state.
FUndoList.MarkTopAsUnmodified;
FRedoList.MarkTopAsUnmodified;
end;
SendNotification(senrModifiedChanged, Self);
end;
procedure TSynEditStringList.SendCachedNotify;
begin
//debugln(['--- send cached notify ', FCachedNotifyStart,' / ',FCachedNotifyCount]);
if (FCachedNotifyCount <> 0) and FCachedNotify then begin
FCachedNotify := False;
TLineRangeNotificationList(FNotifyLists[senrLineCount])
.CallRangeNotifyEvents(FCachedNotifySender, FCachedNotifyStart, FCachedNotifyCount);
end;
end;
function TSynEditStringList.LogicPosAddChars(const ALine: String; ALogicalPos,
ACount: integer; AFlags: LPosFlags): Integer;
var
l: Integer;
begin
// UTF8 handing of chars
Result := ALogicalPos;
l := length(ALine);
if ACount > 0 then begin;
while (Result < l) and (ACount > 0) do begin
inc(Result);
if (ALine[Result] in [#0..#127, #192..#255]) and
( (lpStopAtCodePoint in AFlags) or (not LogicPosIsCombining(@ALine[Result])) )
then
dec(ACount);
end;
if lpAllowPastEOL in AFlags then
Result := Result + ACount;
if (Result <= l) then
while (Result > 1) and
( (not(ALine[Result] in [#0..#127, #192..#255])) or
( (not(lpStopAtCodePoint in AFlags)) and LogicPosIsCombining(@ALine[Result]) )
)
do
dec(Result);
end else begin
while (Result > 1) and (ACount < 0) do begin
dec(Result);
if (Result > l) or (Result = 1) or
( (ALine[Result] in [#0..#127, #192..#255]) and
( (lpStopAtCodePoint in AFlags) or (not LogicPosIsCombining(@ALine[Result])) )
)
then
inc(ACount);
end;
end;
end;
function TSynEditStringList.LogicPosIsAtChar(const ALine: String; ALogicalPos: integer;
AFlags: LPosFlags): Boolean;
begin
// UTF8 handing of chars
Result := (lpAllowPastEol in AFlags) and (ALogicalPos >= 1);
if (ALogicalPos < 1) or (ALogicalPos > length(ALine)) then exit;
Result := ALine[ALogicalPos] in [#0..#127, #192..#255];
if Result then
Result := (ALogicalPos = 1) or
(lpStopAtCodePoint in AFlags) or
(not LogicPosIsCombining(@ALine[ALogicalPos]));
end;
function TSynEditStringList.LogicPosAdjustToChar(const ALine: String; ALogicalPos: integer;
AFlags: LPosFlags): Integer;
begin
// UTF8 handing of chars
Result := ALogicalPos;
if (ALogicalPos < 1) or (ALogicalPos > length(ALine)) then exit;
if lpAdjustToNext in AFlags then begin
while (Result <= length(ALine)) and
( (not(ALine[Result] in [#0..#127, #192..#255])) or
((Result <> 1) and
(not(lpStopAtCodePoint in AFlags)) and LogicPosIsCombining(@ALine[Result])
)
)
do
inc(Result);
end;
if (not (lpAllowPastEol in AFlags)) and (Result > length(ALine)) then
Result := length(ALine); // + 1
if (Result > length(ALine)) then exit;
while (Result > 1) and
( (not(ALine[Result] in [#0..#127, #192..#255])) or
( (not(lpStopAtCodePoint in AFlags)) and LogicPosIsCombining(@ALine[Result]) )
)
do
dec(Result);
end;
procedure TSynEditStringList.MarkModified(AFirst, ALast: Integer);
var
Index: Integer;
begin
for Index := AFirst - 1 to ALast - 1 do
if (Index >= 0) or (Index < Count) then
Flags[Index] := Flags[Index] + [sfModified] - [sfSaved];
end;
procedure TSynEditStringList.MarkSaved;
var
Index: Integer;
begin
for Index := 0 to Count - 1 do
if sfModified in Flags[Index] then
Flags[Index] := Flags[Index] + [sfSaved];
end;
procedure TSynEditStringList.AddGenericHandler(AReason: TSynEditNotifyReason; AHandler: TMethod);
begin
FNotifyLists[AReason].Add(AHandler);
end;
procedure TSynEditStringList.RemoveGenericHandler(AReason: TSynEditNotifyReason; AHandler: TMethod);
begin
FNotifyLists[AReason].Remove(AHandler);
end;
procedure TSynEditStringList.CopyHanlders(OtherLines: TSynEditStringList; AOwner: TObject = nil);
var
i: TSynEditNotifyReason;
begin
for i := low(TSynEditNotifyReason) to high(TSynEditNotifyReason) do
FNotifyLists[i].AddCopyFrom(OtherLines.FNotifyLists[i], AOwner);
end;
procedure TSynEditStringList.RemoveHanlders(AOwner: TObject);
var
i: TSynEditNotifyReason;
begin
for i := low(TSynEditNotifyReason) to high(TSynEditNotifyReason) do
FNotifyLists[i].RemoveAllMethodsOfObject(AOwner);
end;
procedure TSynEditStringList.SetCapacity(NewCapacity: integer);
begin
if NewCapacity < Count then
fList.Count := NewCapacity;
fList.SetCapacity(NewCapacity);
IncreaseTextChangeStamp;
end;
procedure TSynEditStringList.MaybeSendSenrLinesModified;
begin
assert( (FModifiedNotifyOldCount >= 0) and (FModifiedNotifyNewCount >= 0), 'FModifiedNotify___Count >= 0');
if (FModifiedNotifyOldCount > 0) or (FModifiedNotifyNewCount > 0) then
TLinesModifiedNotificationList(FNotifyLists[senrLinesModified])
.CallRangeNotifyEvents(Self, FModifiedNotifyStart, FModifiedNotifyNewCount, FModifiedNotifyOldCount);
end;
procedure TSynEditStringList.SetUpdateState(Updating: Boolean; Sender: TObject);
begin
if FIsInDecPaintLock then exit;
if Updating then begin
SendNotification(senrBeforeIncPaintLock, Sender);
SendNotification(senrIncPaintLock, Sender); // DoIncPaintLock
SendNotification(senrAfterIncPaintLock, Sender);
FCachedNotify := False;
FModifiedNotifyStart := -1;
FModifiedNotifyOldCount := 0;
FModifiedNotifyNewCount := 0;
end else begin
if FCachedNotify then
SendCachedNotify;
MaybeSendSenrLinesModified; // must be before senrDecPaintLock is sent
FIsInDecPaintLock := True;
try
SendNotification(senrBeforeDecPaintLock, Sender);
SendNotification(senrDecPaintLock, Sender); // DoDecPaintLock
SendNotification(senrAfterDecPaintLock, Sender);
finally
FIsInDecPaintLock := False;
end;
end;
end;
procedure TSynEditStringList.EditInsert(LogX, LogY: Integer; AText: String);
var
s: string;
begin
IncIsInEditAction;
s := Strings[LogY - 1];
if LogX - 1 > Length(s) then begin
AText := StringOfChar(' ', LogX - 1 - Length(s)) + AText;
LogX := Length(s) + 1;
end;
Strings[LogY - 1] := copy(s,1, LogX - 1) + AText + copy(s, LogX, length(s));
if AText <> '' then
CurUndoList.AddChange(TSynEditUndoTxtInsert.Create(LogX, LogY, Length(AText)));
MarkModified(LogY, LogY);
SendNotification(senrEditAction, self, LogY, 0, LogX, length(AText), AText);
DecIsInEditAction;
end;
function TSynEditStringList.EditDelete(LogX, LogY, ByteLen: Integer): String;
var
s: string;
begin
Result := '';
if ByteLen <= 0 then
exit;
IncIsInEditAction;
s := Strings[LogY - 1];
if LogX - 1 > Length(s) then
exit;
Result := copy(s, LogX, ByteLen);
Strings[LogY - 1] := copy(s,1, LogX - 1) + copy(s, LogX + ByteLen, length(s));
if Result <> '' then
CurUndoList.AddChange(TSynEditUndoTxtDelete.Create(LogX, LogY, Result));
MarkModified(LogY, LogY);
SendNotification(senrEditAction, self, LogY, 0, LogX, -ByteLen, '');
DecIsInEditAction;
end;
function TSynEditStringList.EditReplace(LogX, LogY, ByteLen: Integer; AText: String): String;
var
s, s2: string;
begin
IncIsInEditAction;
if ByteLen <= 0 then
ByteLen := 0;
s := Strings[LogY - 1];
if LogX - 1 > Length(s) then begin
AText := StringOfChar(' ', LogX - 1 - Length(s)) + AText;
LogX := Length(s) + 1;
end;
if LogX - 1 + ByteLen > Length(s) then
ByteLen := Length(s) - (LogX-1);
Result := copy(s, LogX, ByteLen);
SetLength(s2, Length(s) - ByteLen + Length(AText));
if LogX > 1 then
system.Move(s[1], s2[1], LogX-1);
if AText <> '' then
system.Move(AText[1], s2[LogX], Length(AText));
if Length(s)-(LogX-1)-ByteLen > 0 then
system.Move(s[LogX+ByteLen], s2[LogX+Length(AText)], Length(s)-(LogX-1)-ByteLen);
Strings[LogY - 1] := s2;
//Strings[LogY - 1] := copy(s,1, LogX - 1) + AText + copy(s, LogX + ByteLen, length(s));
if Result <> '' then
CurUndoList.AddChange(TSynEditUndoTxtDelete.Create(LogX, LogY, Result));
if AText <> '' then
CurUndoList.AddChange(TSynEditUndoTxtInsert.Create(LogX, LogY, Length(AText)));
MarkModified(LogY, LogY);
SendNotification(senrEditAction, self, LogY, 0, LogX, -ByteLen, '');
SendNotification(senrEditAction, self, LogY, 0, LogX, length(AText), AText);
DecIsInEditAction;
end;
procedure TSynEditStringList.EditLineBreak(LogX, LogY: Integer);
var
s: string;
begin
IncIsInEditAction;
if Count = 0 then Add('');
s := Strings[LogY - 1];
if LogX - 1 < length(s) then
Strings[LogY - 1] := copy(s, 1, LogX - 1);
Insert(LogY, copy(s, LogX, length(s)));
CurUndoList.AddChange(TSynEditUndoTxtLineBreak.Create(LogY));
MarkModified(LogY, LogY + 1);
SendNotification(senrEditAction, self, LogY, 1, LogX, 0, '');
DecIsInEditAction;
end;
procedure TSynEditStringList.EditLineJoin(LogY: Integer; FillText: String = '');
var
t: string;
begin
IncIsInEditAction;
t := Strings[LogY - 1];
if FillText <> '' then
EditInsert(1 + Length(t), LogY, FillText);
CurUndoList.AddChange(TSynEditUndoTxtLineJoin.Create(1 + Length(Strings[LogY-1]),
LogY));
t := t + FillText;
Strings[LogY - 1] := t + Strings[LogY] ;
Delete(LogY);
MarkModified(LogY, LogY);
SendNotification(senrEditAction, self, LogY, -1, 1+length(t), 0, '');
DecIsInEditAction;
end;
procedure TSynEditStringList.EditLinesInsert(LogY, ACount: Integer;
AText: String = '');
begin
IncIsInEditAction;
InsertLines(LogY - 1, ACount);
CurUndoList.AddChange(TSynEditUndoTxtLinesIns.Create(LogY, ACount));
SendNotification(senrEditAction, self, LogY, ACount, 1, 0, '');
if AText <> '' then
EditInsert(1, LogY, AText);
MarkModified(LogY, LogY + ACount - 1);
DecIsInEditAction;
end;
procedure TSynEditStringList.EditLinesDelete(LogY, ACount: Integer);
var
i: Integer;
begin
IncIsInEditAction;
for i := LogY to LogY + ACount - 1 do
EditDelete(1, i, length(Strings[i-1]));
DeleteLines(LogY - 1, ACount);
CurUndoList.AddChange(TSynEditUndoTxtLinesDel.Create(LogY, ACount));
SendNotification(senrEditAction, self, LogY, -ACount, 1, 0, '');
DecIsInEditAction;
end;
procedure TSynEditStringList.EditUndo(Item: TSynEditUndoItem);
begin
IncIsInEditAction; // all undo calls edit actions
EditRedo(Item);
DecIsInEditAction;
end;
procedure TSynEditStringList.UndoEditLinesDelete(LogY, ACount: Integer);
begin
CurUndoList.AddChange(TSynEditUndoTxtLinesDel.Create(LogY, ACount));
DeleteLines(LogY - 1, ACount);
SendNotification(senrEditAction, self, LogY, -ACount, 1, 0, '');
end;
procedure TSynEditStringList.IncreaseTextChangeStamp;
begin
if FTextChangeStamp=High(FTextChangeStamp) then
FTextChangeStamp:=Low(FTextChangeStamp)
else
inc(FTextChangeStamp);
end;
procedure TSynEditStringList.EditRedo(Item: TSynEditUndoItem);
begin
IncIsInEditAction; // all undo calls edit actions
Item.PerformUndo(self);
DecIsInEditAction;
end;
procedure TSynEditStringList.SendNotification(AReason: TSynEditNotifyReason;
ASender: TSynEditStrings; aIndex, aCount: Integer);
var
i, oldcount, overlap: Integer;
begin
assert(AReason in [senrLineChange, senrLineCount, senrLinesModified, senrHighlightChanged], 'Correct SendNotification');
if FIgnoreSendNotification[AReason] > 0 then exit;
if IsUpdating and (AReason in [senrLineChange, senrLineCount]) then begin
// senrLinesModified
assert( (FModifiedNotifyOldCount >= 0) and (FModifiedNotifyNewCount >= 0), 'FModifiedNotify___Count >= 0');
assert(aIndex >= 0, 'SendNotification index');
if (FModifiedNotifyOldCount = 0) and (FModifiedNotifyNewCount = 0) then
FModifiedNotifyStart := aIndex;
if aIndex < FModifiedNotifyStart then begin
i := FModifiedNotifyStart - aIndex;
FModifiedNotifyStart := aIndex;
FModifiedNotifyNewCount := FModifiedNotifyNewCount + i;
FModifiedNotifyOldCount := FModifiedNotifyOldCount + i;
end;
oldcount := 0;
if AReason = senrLineCount then begin
if aCount < 0 then begin
oldcount := -aCount;
if (aIndex < FModifiedNotifyStart + FModifiedNotifyNewCount) then begin
overlap := (FModifiedNotifyStart + FModifiedNotifyNewCount) - aIndex;
if overlap > oldcount then overlap := oldcount;
FModifiedNotifyNewCount := FModifiedNotifyNewCount - overlap;
oldcount := oldcount - overlap;
end;
FModifiedNotifyOldCount := FModifiedNotifyOldCount + oldcount;
oldcount := 0;
end
else begin
FModifiedNotifyNewCount := FModifiedNotifyNewCount + aCount;
oldcount := aCount; // because already added to newcount
end;
end
else
if AReason = senrLineChange then begin
oldcount := aCount;
end;
if aIndex + oldcount > FModifiedNotifyStart + FModifiedNotifyNewCount then begin
i := (aIndex + oldcount) - (FModifiedNotifyStart + FModifiedNotifyNewCount);
FModifiedNotifyNewCount := FModifiedNotifyNewCount + i;
FModifiedNotifyOldCount := FModifiedNotifyOldCount + i;
end;
// CacheNotify
if AReason = senrLineCount then begin
// maybe cache and combine
if not FCachedNotify then begin
FCachedNotify := True;
FCachedNotifySender := ASender;
FCachedNotifyStart := aIndex;
FCachedNotifyCount := aCount;
exit;
end
else
if (FCachedNotifySender = ASender) and (aIndex >= FCachedNotifyStart) and
(FCachedNotifyCount > 0) and
(aIndex <= FCachedNotifyStart + FCachedNotifyCount) and
((aCount > 0) or (aIndex - aCount <= FCachedNotifyStart + FCachedNotifyCount))
then begin
FCachedNotifyCount := FCachedNotifyCount + aCount;
if FCachedNotifyCount = 0 then
FCachedNotify := False;
exit;
end;
end
else
if FCachedNotify and (AReason = senrLineChange) and
(ASender = FCachedNotifySender) and (FCachedNotifyCount > 0) and
(aIndex >= FCachedNotifyStart) and
(aIndex + aCount {- 1} <= FCachedNotifyStart + FCachedNotifyCount {- 1})
then
exit; // Will send senrLineCount instead
if FCachedNotify then
SendCachedNotify;
end
else begin
case AReason of
senrLineChange:
TLinesModifiedNotificationList(FNotifyLists[senrLinesModified])
.CallRangeNotifyEvents(ASender, aIndex, aCount, aCount);
senrLineCount:
TLinesModifiedNotificationList(FNotifyLists[senrLinesModified])
.CallRangeNotifyEvents(ASender, aIndex, aCount, 0);
end;
end;
TLineRangeNotificationList(FNotifyLists[AReason])
.CallRangeNotifyEvents(ASender, aIndex, aCount);
end;
procedure TSynEditStringList.SendNotification(AReason: TSynEditNotifyReason;
ASender: TSynEditStrings; aIndex, aCount: Integer;
aBytePos: Integer; aLen: Integer; aTxt: String);
begin
assert(AReason in [senrEditAction], 'Correct SendNotification');
if FIgnoreSendNotification[AReason] > 0 then exit;
if FCachedNotify then
SendCachedNotify;
// aindex is mis-named (linepos) for edit action
TLineEditNotificationList(FNotifyLists[AReason])
.CallRangeNotifyEvents(ASender, aIndex, aBytePos, aLen, aCount, aTxt);
end;
procedure TSynEditStringList.SendNotification(AReason: TSynEditNotifyReason;
ASender: TObject);
begin
if AReason in [senrLineChange, senrLineCount, senrLinesModified, senrHighlightChanged, senrEditAction] then
raise Exception.Create('Invalid');
if FCachedNotify then
SendCachedNotify;
if (AReason in [senrCleared, senrTextBufferChanging]) then
MaybeSendSenrLinesModified;
FNotifyLists[AReason].CallNotifyEvents(ASender);
end;
procedure TSynEditStringList.FlushNotificationCache;
begin
if FCachedNotify then
SendCachedNotify;
end;
procedure TSynEditStringList.IgnoreSendNotification(AReason: TSynEditNotifyReason;
IncIgnore: Boolean);
begin
if IncIgnore then
inc(FIgnoreSendNotification[AReason])
else
if FIgnoreSendNotification[AReason] > 0 then
dec(FIgnoreSendNotification[AReason])
end;
{ TSynEditStringMemory }
type
PObject = ^TObject;
constructor TSynEditStringMemory.Create;
const
FlagSize = ((SizeOf(TSynEditStringFlags) + 1 ) Div 2) * 2; // ensure boundary
begin
inherited Create;
ItemSize := SizeOf(String) + SizeOf(TObject) + FlagSize;
FRangeList := TSynManagedStorageMemList.Create;
FRangeListLock := 0;
end;
destructor TSynEditStringMemory.Destroy;
begin
inherited Destroy;
FreeAndNil(FRangeList);
end;
procedure TSynEditStringMemory.InsertRows(AIndex, ACount: Integer);
begin
// Managed lists to get Mave, Count, instead of InsertRows
inc(FRangeListLock);
inherited InsertRows(AIndex, ACount);
dec(FRangeListLock);
FRangeList.CallInsertedLines(AIndex, ACount);
end;
procedure TSynEditStringMemory.DeleteRows(AIndex, ACount: Integer);
begin
// Managed lists to get Mave, Count, instead of InsertRows
inc(FRangeListLock);
inherited DeleteRows(AIndex, ACount);
dec(FRangeListLock);
FRangeList.CallDeletedLines(AIndex, ACount);
end;
function TSynEditStringMemory.GetPChar(ALineIndex: Integer; out ALen: Integer): PChar;
begin
ALen := length((PString(ItemPointer[ALineIndex]))^);
Result := (PPChar(ItemPointer[ALineIndex]))^;
end;
procedure TSynEditStringMemory.Move(AFrom, ATo, ALen: Integer);
var
Len, i: Integer;
begin
if ATo < AFrom then begin
Len := Min(ALen, AFrom-ATo);
for i:=ATo to ATo + Len -1 do Strings[i]:='';
end else begin
Len := Min(ALen, ATo-AFrom);
for i:=ATo+Alen-Len to ATo+ALen -1 do Strings[i]:='';
end;
inherited Move(AFrom, ATo, ALen);
FRangeList.CallMove(AFrom, ATo, ALen);
end;
procedure TSynEditStringMemory.SetCount(const AValue: Integer);
var
OldCount, i : Integer;
begin
If Count = AValue then exit;
for i:= AValue to Count-1 do
Strings[i]:='';
OldCount := Count;
inherited SetCount(AValue);
FRangeList.ChildCounts := AValue;
if FRangeListLock = 0 then begin
if OldCount > Count then
FRangeList.CallDeletedLines(Count, OldCount - Count)
else
FRangeList.CallInsertedLines(OldCount, Count - OldCount);
end;
end;
function TSynEditStringMemory.GetString(Index: Integer): String;
begin
Result := (PString(ItemPointer[Index]))^;
end;
procedure TSynEditStringMemory.SetFlags(Index: Integer; const AValue: TSynEditStringFlags);
begin
(PSynEditStringFlags(ItemPointer[Index] + SizeOf(String) + SizeOf(TObject) ))^ := AValue;
end;
procedure TSynEditStringMemory.SetString(Index: Integer; const AValue: String);
begin
(PString(ItemPointer[Index]))^ := AValue;
if FRangeListLock = 0 then
FRangeList.CallLineTextChanged(Index);
end;
procedure TSynEditStringMemory.SetCapacity(const AValue: Integer);
begin
inherited SetCapacity(AValue);
FRangeList.ChildCapacities := AValue;
end;
function TSynEditStringMemory.GetObject(Index: Integer): TObject;
begin
Result := (PObject(ItemPointer[Index] + SizeOf(String)))^;
end;
function TSynEditStringMemory.GetFlags(Index: Integer): TSynEditStringFlags;
begin
Result := (PSynEditStringFlags(ItemPointer[Index] + SizeOf(String) + SizeOf(TObject) ))^;
end;
function TSynEditStringMemory.GetRange(Index: Pointer): TSynManagedStorageMem;
begin
Result := FRangeList[Index];
end;
procedure TSynEditStringMemory.SetObject(Index: Integer; const AValue: TObject);
begin
(PObject(ItemPointer[Index] + SizeOf(String)))^ := AValue;
end;
procedure TSynEditStringMemory.SetRange(Index: Pointer; const AValue: TSynManagedStorageMem);
begin
FRangeList[Index] := AValue;
if AValue <> nil then begin
AValue.Capacity := Capacity;
AValue.Count := Count;
end;
end;
{ TLinesModifiedNotificationList }
procedure TLinesModifiedNotificationList.CallRangeNotifyEvents(Sender: TSynEditStrings; aIndex,
aNewCount, aOldCount: Integer);
var
i: LongInt;
begin
i:=Count;
while NextDownIndex(i) do
TStringListLinesModifiedEvent(Items[i])(Sender, aIndex, aNewCount, aOldCount);
end;
{ TLineRangeNotificationList }
procedure TLineRangeNotificationList.CallRangeNotifyEvents(Sender: TSynEditStrings;
aIndex, aCount: Integer);
var
i: LongInt;
begin
i:=Count;
while NextDownIndex(i) do
TStringListLineCountEvent(Items[i])(Sender, aIndex, aCount);
end;
{ TLineEditNotificationList }
procedure TLineEditNotificationList.CallRangeNotifyEvents(Sender: TSynEditStrings;
aLinePos, aBytePos, aCount, aLineBrkCnt: Integer; aText: String);
var
i: LongInt;
begin
i:=Count;
while NextDownIndex(i) do
TStringListLineEditEvent(Items[i])(Sender, aLinePos, aBytePos, aCount,
aLineBrkCnt, aText);
end;
end.