fpc/ide/text/fpviews.pas

{
    $Id$
    This file is part of the Free Pascal Integrated Development Environment
    Copyright (c) 1998 by Berczi Gabor

    Views and view-related functions for the IDE

    See the file COPYING.FPC, included in this distribution,
    for details about the copyright.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 **********************************************************************}
unit FPViews;

{$i globdir.inc}

interface

uses
  Dos,Objects,Drivers,Commands,HelpCtx,Views,Menus,Dialogs,App,Gadgets,
  ASCIITAB,
{$ifdef EDITORS}
  Editors,
{$else}
  WEditor,
{$endif}
  WUtils,WHelp,WHlpView,WViews,
  Comphook,
  FPConst,FPUsrScr;

type
{$IFNDEF EDITORS}
    TEditor = TCodeEditor; PEditor = PCodeEditor;
{$ENDIF}

    PStoreCollection = ^TStoreCollection;
    TStoreCollection = object(TStringCollection)
      function Add(const S: string): PString;
    end;

    PIntegerLine = ^TIntegerLine;
    TIntegerLine = object(TInputLine)
      constructor Init(var Bounds: TRect; AMin, AMax: longint);
    end;

    PFPHeapView = ^TFPHeapView;
    TFPHeapView = object(THeapView)
      constructor Init(var Bounds: TRect);
      constructor InitKb(var Bounds: TRect);
      procedure   HandleEvent(var Event: TEvent); virtual;
    end;

    TFPWindow = object(TWindow)
      procedure HandleEvent(var Event: TEvent); virtual;
    end;

    PFPHelpViewer = ^TFPHelpViewer;
    TFPHelpViewer = object(THelpViewer)
      function    GetLocalMenu: PMenu; virtual;
      function    GetCommandTarget: PView; virtual;
    end;

    PFPHelpWindow = ^TFPHelpWindow;
    TFPHelpWindow = object(THelpWindow)
      constructor Init(var Bounds: TRect; ATitle: TTitleStr; ASourceFileID: word; AContext: THelpCtx; ANumber: Integer);
      procedure   InitHelpView; virtual;
      procedure   Show; virtual;
      procedure   Hide; virtual;
      procedure   HandleEvent(var Event: TEvent); virtual;
      function    GetPalette: PPalette; virtual;
    end;

    PTextScroller = ^TTextScroller;
    TTextScroller = object(TStaticText)
      TopLine: integer;
      Speed  : integer;
      Lines  : PUnsortedStringCollection;
      constructor Init(var Bounds: TRect; ASpeed: integer; AText: PUnsortedStringCollection);
      function    GetLineCount: integer; virtual;
      function    GetLine(I: integer): string; virtual;
      procedure   HandleEvent(var Event: TEvent); virtual;
      procedure   Update; virtual;
      procedure   Reset; virtual;
      procedure   Scroll; virtual;
      procedure   Draw; virtual;
      destructor  Done; virtual;
    private
      LastTT: longint;
    end;

    PSourceEditor = ^TSourceEditor;
    TSourceEditor = object(TFileEditor)
      constructor Init(var Bounds: TRect; AHScrollBar, AVScrollBar:
          PScrollBar; AIndicator: PIndicator;const AFileName: string);
{$ifndef EDITORS}
      function  IsReservedWord(const S: string): boolean; virtual;
      function  GetSpecSymbolCount(SpecClass: TSpecSymbolClass): integer; virtual;
      function  GetSpecSymbol(SpecClass: TSpecSymbolClass; Index: integer): string; virtual;
{$endif}
      procedure   HandleEvent(var Event: TEvent); virtual;
      function    GetLocalMenu: PMenu; virtual;
      function    GetCommandTarget: PView; virtual;
      function    CreateLocalMenuView(var Bounds: TRect; M: PMenu): PMenuPopup; virtual;
    end;

    PSourceWindow = ^TSourceWindow;
    TSourceWindow = object(TFPWindow)
      Editor    : PSourceEditor;
      Indicator : PIndicator;
      constructor Init(var Bounds: TRect; AFileName: string);
      procedure   SetTitle(ATitle: string); virtual;
      procedure   UpdateTitle; virtual;
      procedure   HandleEvent(var Event: TEvent); virtual;
      procedure   SetState(AState: Word; Enable: Boolean); virtual;
      procedure   Update; virtual;
      procedure   UpdateCommands; virtual;
      function    GetPalette: PPalette; virtual;
      constructor Load(var S: TStream);
      procedure   Store(var S: TStream);
      destructor  Done; virtual;
    end;

    PGDBSourceEditor = ^TGDBSourceEditor;
    TGDBSourceEditor = object(TSourceEditor)
      function   InsertLine : Sw_integer;virtual;
      function   Valid(Command: Word): Boolean; virtual;
      procedure  AddLine(const S: string); virtual;
      procedure  AddErrorLine(const S: string); virtual;
    private
      Silent,
      AutoRepeat,
      IgnoreStringAtEnd : boolean;
      LastCommand : String;
      end;

    PGDBWindow = ^TGDBWindow;
    TGDBWindow = object(TFPWindow)
      Editor    : PGDBSourceEditor;
      Indicator : PIndicator;
      constructor Init(var Bounds: TRect);
      procedure   WriteText(Buf : pchar;IsError : boolean);
      procedure   WriteString(Const S : string);
      procedure   WriteErrorString(Const S : string);
      procedure   WriteOutputText(Buf : pchar);
      procedure   WriteErrorText(Buf : pchar);
      function    GetPalette: PPalette;virtual;
      destructor  Done; virtual;
    end;

    PClipboardWindow = ^TClipboardWindow;
    TClipboardWindow = object(TSourceWindow)
      constructor Init;
      procedure   Show; virtual;
      procedure   Hide; virtual;
      procedure   Close; virtual;
      constructor Load(var S: TStream);
      procedure   Store(var S: TStream);
      destructor  Done; virtual;
    end;

    PMessageItem = ^TMessageItem;
    TMessageItem = object(TObject)
      TClass    : longint;
      Text      : PString;
      Module    : PString;
      Row,Col   : sw_integer;
      constructor Init(AClass: longint; const AText: string; AModule: PString; ARow, ACol: sw_integer);
      function    GetText(MaxLen: Sw_integer): string; virtual;
      procedure   Selected; virtual;
      function    GetModuleName: string; virtual;
      destructor  Done; virtual;
    end;

    PMessageListBox = ^TMessageListBox;
    TMessageListBox = object(THSListBox)
      Transparent : boolean;
      NoSelection : boolean;
      MaxWidth    : Sw_integer;
      ModuleNames : PStoreCollection;
      constructor Init(var Bounds: TRect; AHScrollBar, AVScrollBar: PScrollBar);
      procedure   AddItem(P: PMessageItem); virtual;
      function    AddModuleName(const Name: string): PString; virtual;
      function    GetText(Item,MaxLen: Sw_Integer): String; virtual;
      procedure   Clear; virtual;
      procedure   TrackSource; virtual;
      procedure   GotoSource; virtual;
      procedure   Draw; virtual;
      procedure   HandleEvent(var Event: TEvent); virtual;
      function    GetLocalMenu: PMenu; virtual;
      constructor Load(var S: TStream);
      procedure   Store(var S: TStream);
      destructor  Done; virtual;
    end;

{$ifdef OLDCOMP}
    PCompilerMessage = ^TCompilerMessage;
    TCompilerMessage = object(TMessageItem)
      function GetText(MaxLen: Sw_Integer): String; virtual;
    end;
{$endif}

    PProgramInfoWindow = ^TProgramInfoWindow;
    TProgramInfoWindow = object(TDlgWindow)
      InfoST: PColorStaticText;
      LogLB : PMessageListBox;
      constructor Init;
      procedure   AddMessage(AClass: longint; Msg, Module: string; Line, Column: longint);
      procedure   ClearMessages;
      procedure   SizeLimits(var Min, Max: TPoint); virtual;
      procedure   Close; virtual;
      procedure   HandleEvent(var Event: TEvent); virtual;
      procedure   Update; virtual;
      destructor  Done; virtual;
    end;

    PTabItem = ^TTabItem;
    TTabItem = record
      Next : PTabItem;
      View : PView;
      Dis  : boolean;
    end;

    PTabDef = ^TTabDef;
    TTabDef = record
      Next     : PTabDef;
      Name     : PString;
      Items    : PTabItem;
      DefItem  : PView;
      ShortCut : char;
    end;

    PTab = ^TTab;
    TTab = object(TGroup)
      TabDefs   : PTabDef;
      ActiveDef : integer;
      DefCount  : word;
      constructor Init(var Bounds: TRect; ATabDef: PTabDef);
      function    AtTab(Index: integer): PTabDef; virtual;
      procedure   SelectTab(Index: integer); virtual;
      function    TabCount: integer;
      function    Valid(Command: Word): Boolean; virtual;
      procedure   ChangeBounds(var Bounds: TRect); virtual;
      procedure   HandleEvent(var Event: TEvent); virtual;
      function    GetPalette: PPalette; virtual;
      procedure   Draw; virtual;
      procedure   SetState(AState: Word; Enable: Boolean); virtual;
      destructor  Done; virtual;
    private
      InDraw: boolean;
    end;

    PScreenView = ^TScreenView;
    TScreenView = object(TScroller)
      Screen: PScreen;
      constructor Init(var Bounds: TRect; AHScrollBar, AVScrollBar: PScrollBar;
                    AScreen: PScreen);
      procedure   Draw; virtual;
      procedure   Update; virtual;
      procedure   HandleEvent(var Event: TEvent); virtual;
    end;

    PScreenWindow = ^TScreenWindow;
    TScreenWindow = object(TFPWindow)
      ScreenView : PScreenView;
      constructor Init(AScreen: PScreen; ANumber: integer);
      destructor  Done; virtual;
    end;

    PFPAboutDialog = ^TFPAboutDialog;
    TFPAboutDialog = object(TCenterDialog)
      constructor Init;
      procedure   ToggleInfo;
      procedure   HandleEvent(var Event: TEvent); virtual;
    private
      Scroller: PTextScroller;
      TitleST : PStaticText;
    end;

    PFPASCIIChart = ^TFPASCIIChart;
    TFPASCIIChart = object(TASCIIChart)
      constructor Init;
      procedure   HandleEvent(var Event: TEvent); virtual;
      destructor  Done; virtual;
    end;

    PVideoModeListBox = ^TVideoModeListBox;
    TVideoModeListBox = object(TDropDownListBox)
      function    GetText(Item: pointer; MaxLen: sw_integer): string; virtual;
    end;

function  SearchFreeWindowNo: integer;

function IsThereAnyEditor: boolean;
function IsThereAnyWindow: boolean;
function FirstEditorWindow: PSourceWindow;
function EditorWindowFile(const Name : String): PSourceWindow;

function  NewTabItem(AView: PView; ANext: PTabItem): PTabItem;
procedure DisposeTabItem(P: PTabItem);
function  NewTabDef(AName: string; ADefItem: PView; AItems: PTabItem; ANext: PTabDef): PTabDef;
procedure DisposeTabDef(P: PTabDef);

function  GetEditorCurWord(Editor: PEditor): string;
procedure InitReservedWords;
procedure DoneReservedWords;

procedure TranslateMouseClick(View: PView; var Event: TEvent);

function GetNextEditorBounds(var Bounds: TRect): boolean;
function OpenEditorWindow(Bounds: PRect; FileName: string; CurX,CurY: sw_integer): PSourceWindow;
function TryToOpenFile(Bounds: PRect; FileName: string; CurX,CurY: sw_integer;tryexts:boolean): PSourceWindow;

function StartEditor(Editor: PCodeEditor; FileName: string): boolean;

{$ifdef VESA}
procedure InitVESAScreenModes;
{$endif}

procedure NoDebugger;

const
      SourceCmds  : TCommandSet =
        ([cmSave,cmSaveAs,cmCompile]);
      EditorCmds  : TCommandSet =
        ([cmFind,cmReplace,cmSearchAgain,cmJumpLine,cmHelpTopicSearch]);
      CompileCmds : TCommandSet =
        ([cmMake,cmBuild,cmRun]);

      CalcClipboard   : extended = 0;

      OpenFileName    : string = '';
      OpenFileLastExt : string[12] = '*.pas';
      NewEditorOpened : boolean = false;

var  MsgParms : array[1..10] of
         record
           case byte of
             0 : (Ptr : pointer);
             1 : (Long: longint);
         end;

procedure RegisterFPViews;

implementation

uses
  Video,Strings,Keyboard,Memory,MsgBox,Validate,
  Tokens,Version,
  {$ifdef VESA}Vesa,{$endif}
  FPSwitch,FPSymbol,FPDebug,FPVars,FPUtils,FPCompile,FPHelp;

const
  RSourceEditor: TStreamRec = (
     ObjType: 1500;
     VmtLink: Ofs(TypeOf(TSourceEditor)^);
     Load:    @TSourceEditor.Load;
     Store:   @TSourceEditor.Store
  );
  RSourceWindow: TStreamRec = (
     ObjType: 1501;
     VmtLink: Ofs(TypeOf(TSourceWindow)^);
     Load:    @TSourceWindow.Load;
     Store:   @TSourceWindow.Store
  );
  RFPHelpViewer: TStreamRec = (
     ObjType: 1502;
     VmtLink: Ofs(TypeOf(TFPHelpViewer)^);
     Load:    @TFPHelpViewer.Load;
     Store:   @TFPHelpViewer.Store
  );
  RFPHelpWindow: TStreamRec = (
     ObjType: 1503;
     VmtLink: Ofs(TypeOf(TFPHelpWindow)^);
     Load:    @TFPHelpWindow.Load;
     Store:   @TFPHelpWindow.Store
  );
  RClipboardWindow: TStreamRec = (
     ObjType: 1504;
     VmtLink: Ofs(TypeOf(TClipboardWindow)^);
     Load:    @TClipboardWindow.Load;
     Store:   @TClipboardWindow.Store
  );
  RMessageListBox: TStreamRec = (
     ObjType: 1505;
     VmtLink: Ofs(TypeOf(TMessageListBox)^);
     Load:    @TMessageListBox.Load;
     Store:   @TMessageListBox.Store
  );


const
  NoNameCount    : integer = 0;
  ReservedWords  : PUnsortedStringCollection = nil;

{****************************************************************************
                                TStoreCollection
****************************************************************************}

function TStoreCollection.Add(const S: string): PString;
var P: PString;
    Index: Sw_integer;
begin
  if S='' then P:=nil else
  if Search(@S,Index) then P:=At(Index) else
    begin
      P:=NewStr(S);
      Insert(P);
    end;
  Add:=P;
end;



function IsThereAnyEditor: boolean;
function EditorWindow(P: PView): boolean; {$ifndef FPC}far;{$endif}
begin
  EditorWindow:=(P^.HelpCtx=hcSourceWindow);
end;
begin
  IsThereAnyEditor:=Desktop^.FirstThat(@EditorWindow)<>nil;
end;

function IsThereAnyHelpWindow: boolean;
begin
  IsThereAnyHelpWindow:=(HelpWindow<>nil) and (HelpWindow^.GetState(sfVisible));
end;

function IsThereAnyWindow: boolean;
var _Is: boolean;
begin
  _Is:=Message(Desktop,evBroadcast,cmSearchWindow,nil)<>nil;
  _Is:=_Is or ( (ClipboardWindow<>nil) and ClipboardWindow^.GetState(sfVisible));
  IsThereAnyWindow:=_Is;
end;

function FirstEditorWindow: PSourceWindow;
function EditorWindow(P: PView): boolean; {$ifndef FPC}far;{$endif}
begin
  EditorWindow:=(P^.HelpCtx=hcSourceWindow);
end;
begin
  FirstEditorWindow:=pointer(Desktop^.FirstThat(@EditorWindow));
end;

function EditorWindowFile(const Name : String): PSourceWindow;
function EditorWindow(P: PView): boolean; {$ifndef FPC}far;{$endif}
begin
  EditorWindow:=(TypeOf(P^)=TypeOf(TSourceWindow)) and
{$ifdef linux}
                 (PSourceWindow(P)^.Editor^.FileName=Name);
{$else}
                 (UpcaseStr(PSourceWindow(P)^.Editor^.FileName)=UpcaseStr(Name));
{$endif def linux}
end;
begin
  EditorWindowFile:=pointer(Desktop^.FirstThat(@EditorWindow));
end;

function GetEditorCurWord(Editor: PEditor): string;
var S: string;
    PS,PE: byte;
function Trim(S: string): string;
const TrimChars : set of char = [#0,#9,' ',#255];
begin
  while (length(S)>0) and (S[1] in TrimChars) do Delete(S,1,1);
  while (length(S)>0) and (S[length(S)] in TrimChars) do Delete(S,length(S),1);
  Trim:=S;
end;
const AlphaNum : set of char = ['A'..'Z','0'..'9','_'];
begin
  with Editor^ do
  begin
{$ifdef EDITORS}
    S:='';
{$else}
    S:=GetLineText(CurPos.Y);
    PS:=CurPos.X; while (PS>0) and (Upcase(S[PS]) in AlphaNum) do Dec(PS);
    PE:=CurPos.X; while (PE<length(S)) and (Upcase(S[PE+1]) in AlphaNum) do Inc(PE);
    S:=Trim(copy(S,PS+1,PE-PS));
{$endif}
  end;
  GetEditorCurWord:=S;
end;


{*****************************************************************************
                                   Tab
*****************************************************************************}

function NewTabItem(AView: PView; ANext: PTabItem): PTabItem;
var P: PTabItem;
begin
  New(P); FillChar(P^,SizeOf(P^),0);
  P^.Next:=ANext; P^.View:=AView;
  NewTabItem:=P;
end;

procedure DisposeTabItem(P: PTabItem);
begin
  if P<>nil then
  begin
    if P^.View<>nil then Dispose(P^.View, Done);
    Dispose(P);
  end;
end;

function NewTabDef(AName: string; ADefItem: PView; AItems: PTabItem; ANext: PTabDef): PTabDef;
var P: PTabDef;
    x: byte;
begin
  New(P);
  P^.Next:=ANext; P^.Name:=NewStr(AName); P^.Items:=AItems;
  x:=pos('~',AName);
  if (x<>0) and (x<length(AName)) then P^.ShortCut:=Upcase(AName[x+1])
                                  else P^.ShortCut:=#0;
  P^.DefItem:=ADefItem;
  NewTabDef:=P;
end;

procedure DisposeTabDef(P: PTabDef);
var PI,X: PTabItem;
begin
  DisposeStr(P^.Name);
  PI:=P^.Items;
  while PI<>nil do
    begin
      X:=PI^.Next;
      DisposeTabItem(PI);
      PI:=X;
    end;
  Dispose(P);
end;


{*****************************************************************************
                               Reserved Words
*****************************************************************************}

function GetReservedWordCount: integer;
var
  Count,I: integer;
begin
  Count:=0;
  for I:=ord(Low(TokenInfo)) to ord(High(TokenInfo)) do
   with TokenInfo[TToken(I)] do
     if (str<>'') and (str[1] in['A'..'Z']) then
       Inc(Count);
  GetReservedWordCount:=Count;
end;

function GetReservedWord(Index: integer): string;
var
  Count,Idx,I: integer;
  S: string;
begin
  Idx:=-1;
  Count:=-1;
  I:=ord(Low(TokenInfo));
  while (I<=ord(High(TokenInfo))) and (Idx=-1) do
   with TokenInfo[TToken(I)] do
    begin
      if (str<>'') and (str[1] in['A'..'Z']) then
        begin
          Inc(Count);
          if Count=Index then
           Idx:=I;
        end;
      Inc(I);
    end;
  if Idx=-1 then
    S:=''
  else
    S:=TokenInfo[TToken(Idx)].str;
  GetReservedWord:=S;
end;

procedure InitReservedWords;
var S,WordS: string;
    Idx,I: integer;
begin
  New(ReservedWords, Init(50,10));
  for I:=1 to GetReservedWordCount do
    begin
      WordS:=GetReservedWord(I-1); Idx:=length(WordS);
      while ReservedWords^.Count<Idx do
        ReservedWords^.Insert(NewStr(#0));
      S:=ReservedWords^.At(Idx-1)^;
      ReservedWords^.AtFree(Idx-1);
      ReservedWords^.AtInsert(Idx-1,NewStr(S+WordS+#0));
    end;
end;

procedure DoneReservedWords;
begin
  if assigned(ReservedWords) then
    dispose(ReservedWords,done);
end;

function IsFPReservedWord(S: string): boolean;
var _Is: boolean;
    Idx: integer;
    P: PString;
begin
  Idx:=length(S); _Is:=false;
  if (Idx>0) and (ReservedWords<>nil) and (ReservedWords^.Count>=Idx) then
    begin
      S:=UpcaseStr(S);
      P:=ReservedWords^.At(Idx-1);
      _Is:=Pos(#0+S+#0,P^)>0;
    end;
  IsFPReservedWord:=_Is;
end;


{*****************************************************************************
                               SearchWindow
*****************************************************************************}

function SearchWindowWithNo(No: integer): PWindow;
var P: PSourceWindow;
begin
  P:=Message(Desktop,evBroadcast,cmSearchWindow+No,nil);
  if pointer(P)=pointer(Desktop) then P:=nil;
  SearchWindowWithNo:=P;
end;

function SearchFreeWindowNo: integer;
var No: integer;
begin
  No:=1;
  while (No<10) and (SearchWindowWithNo(No)<>nil) do
    Inc(No);
  if No=10 then No:=0;
  SearchFreeWindowNo:=No;
end;


{*****************************************************************************
                              TIntegerLine
 *****************************************************************************}

constructor TIntegerLine.Init(var Bounds: TRect; AMin, AMax: longint);
begin
  inherited Init(Bounds, Bounds.B.X-Bounds.A.X-1);
  Validator:=New(PRangeValidator, Init(AMin, AMax));
end;


{*****************************************************************************
                               SourceEditor
*****************************************************************************}

{$ifndef EDITORS}
function TSourceEditor.GetSpecSymbolCount(SpecClass: TSpecSymbolClass): integer;
var Count: integer;
begin
  case SpecClass of
    ssCommentPrefix   : Count:=3;
    ssCommentSingleLinePrefix   : Count:=1;
    ssCommentSuffix   : Count:=2;
    ssStringPrefix    : Count:=1;
    ssStringSuffix    : Count:=1;
    ssAsmPrefix       : Count:=1;
    ssAsmSuffix       : Count:=1;
    ssDirectivePrefix : Count:=1;
    ssDirectiveSuffix : Count:=1;
  end;
  GetSpecSymbolCount:=Count;
end;

function TSourceEditor.GetSpecSymbol(SpecClass: TSpecSymbolClass; Index: integer): string;
var S: string[20];
begin
  case SpecClass of
    ssCommentPrefix :
      case Index of
        0 : S:='{';
        1 : S:='(*';
        2 : S:='//';
      end;
    ssCommentSingleLinePrefix :
      case Index of
        0 : S:='//';
      end;
    ssCommentSuffix :
      case Index of
        0 : S:='}';
        1 : S:='*)';
      end;
    ssStringPrefix :
      S:='''';
    ssStringSuffix :
      S:='''';
    ssAsmPrefix :
      S:='asm';
    ssAsmSuffix :
      S:='end';
    ssDirectivePrefix :
      S:='{$';
    ssDirectiveSuffix :
      S:='}';
  end;
  GetSpecSymbol:=S;
end;

constructor TSourceEditor.Init(var Bounds: TRect; AHScrollBar, AVScrollBar:
          PScrollBar; AIndicator: PIndicator;const AFileName: string);
begin
  inherited Init(Bounds,AHScrollBar,AVScrollBar,AIndicator,AFileName);
  StoreUndo:=true;
end;

function TSourceEditor.IsReservedWord(const S: string): boolean;
begin
  IsReservedWord:=IsFPReservedWord(S);
end;
{$endif EDITORS}

function TSourceEditor.GetLocalMenu: PMenu;
var M: PMenu;
begin
  M:=NewMenu(
    NewItem('Cu~t~','Shift+Del',kbShiftDel,cmCut,hcCut,
    NewItem('~C~opy','Ctrl+Ins',kbCtrlIns,cmCopy,hcCopy,
    NewItem('~P~aste','Shift+Ins',kbShiftIns,cmPaste,hcPaste,
    NewItem('C~l~ear','Ctrl+Del',kbCtrlDel,cmClear,hcClear,
    NewLine(
    NewItem('Open ~f~ile at cursor','',kbNoKey,cmOpenAtCursor,hcOpenAtCursor,
    NewItem('~B~rowse symbol at cursor','',kbNoKey,cmBrowseAtCursor,hcBrowseAtCursor,
    NewItem('Topic ~s~earch','Ctrl+F1',kbCtrlF1,cmHelpTopicSearch,hcHelpTopicSearch,
    NewLine(
    NewItem('~O~ptions...','',kbNoKey,cmEditorOptions,hcEditorOptions,
    nil)))))))))));
  GetLocalMenu:=M;
end;

function TSourceEditor.GetCommandTarget: PView;
begin
  GetCommandTarget:=@Self;
end;

function TSourceEditor.CreateLocalMenuView(var Bounds: TRect; M: PMenu): PMenuPopup;
var MV: PAdvancedMenuPopup;
begin
  New(MV, Init(Bounds,M));
  CreateLocalMenuView:=MV;
end;

procedure TSourceEditor.HandleEvent(var Event: TEvent);
var DontClear: boolean;
    S: string;
begin
  TranslateMouseClick(@Self,Event);
  case Event.What of
    evCommand :
      begin
        DontClear:=false;
        case Event.Command of
          cmBrowseAtCursor:
            begin
              S:=LowerCaseStr(GetEditorCurWord(@Self));
              OpenOneSymbolBrowser(S);
            end;
          cmOpenAtCursor :
            begin
              S:=LowerCaseStr(GetEditorCurWord(@Self));
              OpenFileName:=S+'.pp'+ListSeparator+
                            S+'.pas'+ListSeparator+
                            S+'.inc';
              Message(Application,evCommand,cmOpen,nil);
            end;
          cmEditorOptions :
            Message(Application,evCommand,cmEditorOptions,@Self);
          cmHelp :
            Message(@Self,evCommand,cmHelpTopicSearch,@Self);
          cmHelpTopicSearch :
            HelpTopicSearch(@Self);
        else DontClear:=true;
        end;
        if not DontClear then ClearEvent(Event);
      end;
  end;
  inherited HandleEvent(Event);
end;

constructor TFPHeapView.Init(var Bounds: TRect);
begin
  inherited Init(Bounds);
  Options:=Options or gfGrowHiX or gfGrowHiY;
  EventMask:=EventMask or evIdle;
  GrowMode:=gfGrowAll;
end;

constructor TFPHeapView.InitKb(var Bounds: TRect);
begin
  inherited InitKb(Bounds);
  Options:=Options or gfGrowHiX or gfGrowHiY;
  EventMask:=EventMask or evIdle;
  GrowMode:=gfGrowAll;
end;

procedure TFPHeapView.HandleEvent(var Event: TEvent);
begin
  case Event.What of
    evIdle :
      Update;
  end;
  inherited HandleEvent(Event);
end;

procedure TFPWindow.HandleEvent(var Event: TEvent);
begin
  case Event.What of
    evBroadcast :
      case Event.Command of
        cmUpdate :
          ReDraw;
        cmSearchWindow+1..cmSearchWindow+99 :
          if (Event.Command-cmSearchWindow=Number) then
              ClearEvent(Event);
      end;
  end;
  inherited HandleEvent(Event);
end;

function TFPHelpViewer.GetLocalMenu: PMenu;
var M: PMenu;
begin
  M:=NewMenu(
    NewItem('C~o~ntents','',kbNoKey,cmHelpContents,hcHelpContents,
    NewItem('~I~ndex','Shift+F1',kbShiftF1,cmHelpIndex,hcHelpIndex,
    NewItem('~T~opic search','Ctrl+F1',kbCtrlF1,cmHelpTopicSearch,hcHelpTopicSearch,
    NewItem('~P~revious topic','Alt+F1',kbAltF1,cmHelpPrevTopic,hcHelpPrevTopic,
    NewLine(
    NewItem('~C~opy','Ctrl+Ins',kbCtrlIns,cmCopy,hcCopy,
    nil)))))));
  GetLocalMenu:=M;
end;

function TFPHelpViewer.GetCommandTarget: PView;
begin
  GetCommandTarget:=Application;
end;

constructor TFPHelpWindow.Init(var Bounds: TRect; ATitle: TTitleStr; ASourceFileID: word;
  AContext: THelpCtx; ANumber: Integer);
begin
  inherited Init(Bounds,ATitle,ASourceFileID,AContext,ANumber);
  HelpCtx:=hcHelpWindow;
  HideOnClose:=true;
end;

procedure TFPHelpWindow.InitHelpView;
var R: TRect;
begin
  GetExtent(R); R.Grow(-1,-1);
  HelpView:=New(PFPHelpViewer, Init(R, HSB, VSB));
  HelpView^.GrowMode:=gfGrowHiX+gfGrowHiY;
end;

procedure TFPHelpWindow.Show;
begin
  inherited Show;
  if GetState(sfVisible) and (Number=0) then
    begin
      Number:=SearchFreeWindowNo;
      ReDraw;
    end;
end;

procedure TFPHelpWindow.Hide;
begin
  inherited Hide;
  if GetState(sfVisible)=false then
    Number:=0;
end;

procedure TFPHelpWindow.HandleEvent(var Event: TEvent);
begin
  case Event.What of
    evBroadcast :
      case Event.Command of
        cmUpdate :
          ReDraw;
        cmSearchWindow+1..cmSearchWindow+99 :
          if (Event.Command-cmSearchWindow=Number) then
              ClearEvent(Event);
      end;
  end;
  inherited HandleEvent(Event);
end;

function TFPHelpWindow.GetPalette: PPalette;
const P: string[length(CIDEHelpDialog)] = CIDEHelpDialog;
begin
  GetPalette:=@P;
end;

constructor TSourceWindow.Init(var Bounds: TRect; AFileName: string);
var HSB,VSB: PScrollBar;
    R: TRect;
    LoadFile: boolean;
begin
  inherited Init(Bounds,AFileName,SearchFreeWindowNo);
  Options:=Options or ofTileAble;
  GetExtent(R); R.A.Y:=R.B.Y-1; R.Grow(-1,0); R.A.X:=14;
  New(HSB, Init(R)); HSB^.GrowMode:=gfGrowLoY+gfGrowHiX+gfGrowHiY; Insert(HSB);
  GetExtent(R); R.A.X:=R.B.X-1; R.Grow(0,-1);
  New(VSB, Init(R)); VSB^.GrowMode:=gfGrowLoX+gfGrowHiX+gfGrowHiY; Insert(VSB);
  GetExtent(R); R.A.X:=3; R.B.X:=14; R.A.Y:=R.B.Y-1;
  New(Indicator, Init(R));
  Indicator^.GrowMode:=gfGrowLoY+gfGrowHiY;
  Insert(Indicator);
  GetExtent(R); R.Grow(-1,-1);
  LoadFile:=AFileName<>'';
  if not LoadFile then
     begin SetTitle('noname'+IntToStrZ(NonameCount,2)+'.pas'); Inc(NonameCount); end;
  New(Editor, Init(R, HSB, VSB, Indicator,AFileName));
  Editor^.GrowMode:=gfGrowHiX+gfGrowHiY;
  if LoadFile then
    if Editor^.LoadFile=false then
       ErrorBox(#3'Error reading file.',nil);
  Insert(Editor);
  UpdateTitle;
end;

procedure TSourceWindow.UpdateTitle;
var Name: string;
begin
  if Editor^.FileName<>'' then
  begin Name:=SmartPath(Editor^.FileName); SetTitle(Name); end;
end;

procedure TSourceWindow.SetTitle(ATitle: string);
begin
  if Title<>nil then DisposeStr(Title);
  Title:=NewStr(ATitle);
  Frame^.DrawView;
end;

procedure TSourceWindow.HandleEvent(var Event: TEvent);
var DontClear: boolean;
begin
  case Event.What of
    evBroadcast :
      case Event.Command of
        cmUpdate :
          Update;
        cmUpdateTitle :
          UpdateTitle;
        cmSearchWindow :
          if @Self<>ClipboardWindow then
            ClearEvent(Event);
      end;
    evCommand :
      begin
        DontClear:=false;
        case Event.Command of
          cmSave :
            if Editor^.IsClipboard=false then
            Editor^.Save;
          cmSaveAs :
            if Editor^.IsClipboard=false then
            Editor^.SaveAs;
        else DontClear:=true;
        end;
        if DontClear=false then ClearEvent(Event);
      end;
  end;
  inherited HandleEvent(Event);
end;

procedure TSourceWindow.SetState(AState: Word; Enable: Boolean);
var OldState: word;
begin
  OldState:=State;
  inherited SetState(AState,Enable);
  if ((AState xor State) and sfActive)<>0 then
  UpdateCommands;
end;

procedure TSourceWindow.UpdateCommands;
var Active: boolean;
begin
  Active:=GetState(sfActive);
  if Editor^.IsClipboard=false then
  begin
    SetCmdState(SourceCmds+CompileCmds,Active);
    SetCmdState(EditorCmds,Active);
  end;
  if Active=false then
     SetCmdState(ToClipCmds+FromClipCmds+NulClipCmds+UndoCmds,false);
  Message(Application,evBroadcast,cmCommandSetChanged,nil);
end;

procedure TSourceWindow.Update;
begin
  ReDraw;
end;

function TSourceWindow.GetPalette: PPalette;
const P: string[length(CSourceWindow)] = CSourceWindow;
begin
  GetPalette:=@P;
end;

constructor TSourceWindow.Load(var S: TStream);
begin
  inherited Load(S);

  GetSubViewPtr(S,Indicator);
  GetSubViewPtr(S,Editor);
end;

procedure TSourceWindow.Store(var S: TStream);
begin
  inherited Store(S);

  PutSubViewPtr(S,Indicator);
  PutSubViewPtr(S,Editor);
end;

destructor TSourceWindow.Done;
begin
  Message(Application,evBroadcast,cmSourceWndClosing,@Self);
  inherited Done;
  Message(Application,evBroadcast,cmUpdate,@Self);
end;

function TGDBSourceEditor.Valid(Command: Word): Boolean;
var OK: boolean;
begin
  OK:=TCodeEditor.Valid(Command);
  { do NOT ask for save !!
  if OK and ((Command=cmClose) or (Command=cmQuit)) then
     if IsClipboard=false then
    OK:=SaveAsk;  }
  Valid:=OK;
end;

procedure  TGDBSourceEditor.AddLine(const S: string);
begin
   if Silent or (IgnoreStringAtEnd and (S=LastCommand)) then exit;
   inherited AddLine(S);
   LimitsChanged;
end;

procedure  TGDBSourceEditor.AddErrorLine(const S: string);
begin
   if Silent then exit;
   inherited AddLine(S);
   { display like breakpoints in red }
   Lines^.At(GetLineCount-1)^.IsBreakpoint:=true;
   LimitsChanged;
end;

function TGDBSourceEditor.InsertLine: Sw_integer;
Var
  S : string;

begin
  if IsReadOnly then begin InsertLine:=-1; Exit; end;
  if CurPos.Y<GetLineCount then S:=GetLineText(CurPos.Y) else S:='';
  s:=Copy(S,1,CurPos.X);
  if assigned(Debugger) then
    if S<>'' then
      begin
        LastCommand:=S;
        { should be true only if we are at the end ! }
        IgnoreStringAtEnd:=(CurPos.Y=GetLineCount-1) and (CurPos.X=length(GetDisplayText(GetLineCount-1)));
        Debugger^.Command(S);
        IgnoreStringAtEnd:=false;
      end
    else if AutoRepeat then
      Debugger^.Command(LastCommand);
  InsertLine:=inherited InsertLine;
end;


constructor TGDBWindow.Init(var Bounds: TRect);
var HSB,VSB: PScrollBar;
    R: TRect;
begin
  inherited Init(Bounds,'GDB window',SearchFreeWindowNo);
  Options:=Options or ofTileAble;
  GetExtent(R); R.A.Y:=R.B.Y-1; R.Grow(-1,0); R.A.X:=14;
  New(HSB, Init(R)); HSB^.GrowMode:=gfGrowLoY+gfGrowHiX+gfGrowHiY; Insert(HSB);
  GetExtent(R); R.A.X:=R.B.X-1; R.Grow(0,-1);
  New(VSB, Init(R)); VSB^.GrowMode:=gfGrowLoX+gfGrowHiX+gfGrowHiY; Insert(VSB);
  GetExtent(R); R.A.X:=3; R.B.X:=14; R.A.Y:=R.B.Y-1;
  New(Indicator, Init(R));
  Indicator^.GrowMode:=gfGrowLoY+gfGrowHiY;
  Insert(Indicator);
  GetExtent(R); R.Grow(-1,-1);
  New(Editor, Init(R, HSB, VSB, nil, GDBOutputFile));
  Editor^.GrowMode:=gfGrowHiX+gfGrowHiY;
  if ExistsFile(GDBOutputFile) then
    begin
      if Editor^.LoadFile=false then
        ErrorBox(#3'Error reading file.',nil);
    end
  else
  { Empty files are buggy !! }
    Editor^.AddLine('');
  Insert(Editor);
  if assigned(Debugger) then
    Debugger^.Command('set width '+IntToStr(Size.X-1));
  Editor^.silent:=false;
  Editor^.AutoRepeat:=true;
end;

destructor TGDBWindow.Done;
begin
  if @Self=GDBWindow then
    GDBWindow:=nil;
  inherited Done;
end;

function TGDBWindow.GetPalette: PPalette;
const P: string[length(CSourceWindow)] = CSourceWindow;
begin
  GetPalette:=@P;
end;

procedure TGDBWindow.WriteOutputText(Buf : pchar);
begin
  {selected normal color ?}
  WriteText(Buf,false);
end;

procedure TGDBWindow.WriteErrorText(Buf : pchar);
begin
  {selected normal color ?}
  WriteText(Buf,true);
end;

procedure TGDBWindow.WriteString(Const S : string);
begin
  Editor^.AddLine(S);
end;

procedure TGDBWindow.WriteErrorString(Const S : string);
begin
  Editor^.AddErrorLine(S);
end;

procedure TGDBWindow.WriteText(Buf : pchar;IsError : boolean);
  var p,pe : pchar;
      s : string;
begin
  p:=buf;
  DeskTop^.Lock;
  While assigned(p) do
    begin
       pe:=strscan(p,#10);
       if pe<>nil then
         pe^:=#0;
       s:=strpas(p);
       If IsError then
         Editor^.AddErrorLine(S)
       else
         Editor^.AddLine(S);
       { restore for dispose }
       if pe<>nil then
         pe^:=#10;
       if pe=nil then
         p:=nil
       else
         begin
           p:=pe;
           inc(p);
         end;
    end;
  DeskTop^.Unlock;
  Editor^.Draw;
end;



constructor TClipboardWindow.Init;
var R: TRect;
    HSB,VSB: PScrollBar;
begin
  Desktop^.GetExtent(R);
  inherited Init(R, '');
  SetTitle('Clipboard');
  HelpCtx:=hcClipboardWindow;
  Number:=wnNoNumber;

  GetExtent(R); R.A.Y:=R.B.Y-1; R.Grow(-1,0); R.A.X:=14;
  New(HSB, Init(R)); HSB^.GrowMode:=gfGrowLoY+gfGrowHiX+gfGrowHiY; Insert(HSB);
  GetExtent(R); R.A.X:=R.B.X-1; R.Grow(0,-1);
  New(VSB, Init(R)); VSB^.GrowMode:=gfGrowLoX+gfGrowHiX+gfGrowHiY; Insert(VSB);
  GetExtent(R); R.A.X:=3; R.B.X:=14; R.A.Y:=R.B.Y-1;
  New(Indicator, Init(R));
  Indicator^.GrowMode:=gfGrowLoY+gfGrowHiY;
  Insert(Indicator);
  GetExtent(R); R.Grow(-1,-1);
  New(Editor, Init(R, HSB, VSB, Indicator, ''));
  Editor^.GrowMode:=gfGrowHiX+gfGrowHiY;
  Insert(Editor);

  Hide;

  Clipboard:=Editor;
end;

procedure TClipboardWindow.Show;
begin
  inherited Show;
  if GetState(sfVisible) and (Number=0) then
    begin
      Number:=SearchFreeWindowNo;
      ReDraw;
    end;
end;

procedure TClipboardWindow.Hide;
begin
  inherited Hide;
  if GetState(sfVisible)=false then Number:=0;
end;

procedure TClipboardWindow.Close;
begin
  Hide;
end;

constructor TClipboardWindow.Load(var S: TStream);
begin
  inherited Load(S);

  Clipboard:=Editor;
end;

procedure TClipboardWindow.Store(var S: TStream);
begin
  inherited Store(S);
end;

destructor TClipboardWindow.Done;
begin
  inherited Done;
  Clipboard:=nil;
  ClipboardWindow:=nil;
end;


constructor TMessageListBox.Init(var Bounds: TRect; AHScrollBar, AVScrollBar: PScrollBar);
begin
  inherited Init(Bounds,1,AHScrollBar, AVScrollBar);
  GrowMode:=gfGrowLoX+gfGrowHiX+gfGrowHiY;
  New(ModuleNames, Init(50,100));
  NoSelection:=true;
end;

function TMessageListBox.GetLocalMenu: PMenu;
var M: PMenu;
begin
  if (Owner<>nil) and (Owner^.GetState(sfModal)) then M:=nil else
  M:=NewMenu(
    NewItem('~C~lear','',kbNoKey,cmMsgClear,hcMsgClear,
    NewLine(
    NewItem('~G~oto source','',kbNoKey,cmMsgGotoSource,hcMsgGotoSource,
    NewItem('~T~rack source','',kbNoKey,cmMsgTrackSource,hcMsgTrackSource,
    nil)))));
  GetLocalMenu:=M;
end;

procedure TMessageListBox.HandleEvent(var Event: TEvent);
var DontClear: boolean;
begin
  case Event.What of
    evKeyDown :
      begin
        DontClear:=false;
        case Event.KeyCode of
          kbEnter :
            Message(@Self,evCommand,cmMsgGotoSource,nil);
        else
          DontClear:=true;
        end;
        if not DontClear then
          ClearEvent(Event);
      end;
    evBroadcast :
      case Event.Command of
        cmListItemSelected :
          if Event.InfoPtr=@Self then
            Message(@Self,evCommand,cmMsgTrackSource,nil);
      end;
    evCommand :
      begin
        DontClear:=false;
        case Event.Command of
          cmMsgGotoSource :
            if Range>0 then
              GotoSource;
          cmMsgTrackSource :
            if Range>0 then
              TrackSource;
          cmMsgClear :
            Clear;
          else
            DontClear:=true;
        end;
        if not DontClear then
          ClearEvent(Event);
      end;
  end;
  inherited HandleEvent(Event);
end;

procedure TMessageListBox.AddItem(P: PMessageItem);
var W : integer;
begin
  if List=nil then New(List, Init(500,500));
  W:=length(P^.GetText(255));
  if W>MaxWidth then
  begin
    MaxWidth:=W;
    if HScrollBar<>nil then
       HScrollBar^.SetRange(0,MaxWidth);
  end;
  List^.Insert(P);
  SetRange(List^.Count);
  if Focused=List^.Count-1-1 then
     FocusItem(List^.Count-1);
  DrawView;
end;

function TMessageListBox.AddModuleName(const Name: string): PString;
var P: PString;
begin
  if ModuleNames<>nil then
    P:=ModuleNames^.Add(Name)
  else
    P:=nil;
  AddModuleName:=P;
end;

function TMessageListBox.GetText(Item,MaxLen: Sw_Integer): String;
var P: PMessageItem;
    S: string;
begin
  P:=List^.At(Item);
  S:=P^.GetText(MaxLen);
  GetText:=copy(S,1,MaxLen);
end;

procedure TMessageListBox.Clear;
begin
  if assigned(List) then
    Dispose(List, Done);
  List:=nil;
  MaxWidth:=0;
  if assigned(ModuleNames) then
    ModuleNames^.FreeAll;
  SetRange(0); DrawView;
  Message(Application,evBroadcast,cmClearLineHighlights,@Self);
end;

procedure TMessageListBox.TrackSource;
var W: PSourceWindow;
    P: PMessageItem;
    R: TRect;
    Row,Col: sw_integer;
begin
  Message(Application,evBroadcast,cmClearLineHighlights,@Self);
  if Range=0 then Exit;
  P:=List^.At(Focused);
  if P^.Row=0 then Exit;
  Desktop^.Lock;
  GetNextEditorBounds(R);
{$ifdef OLDCOMP}
  if Assigned(Owner) and (Owner=pointer(ProgramInfoWindow)) then
{$endif}
    R.B.Y:=Owner^.Origin.Y;
  if P^.Row>0 then Row:=P^.Row-1 else Row:=0;
  if P^.Col>0 then Col:=P^.Col-1 else Col:=0;
  W:=EditorWindowFile(P^.GetModuleName);
  if assigned(W) then
    begin
      W^.GetExtent(R);
{$ifdef OLDCOMP}
      if Assigned(Owner) and (Owner=pointer(ProgramInfoWindow)) then
{$endif}
        R.B.Y:=Owner^.Origin.Y;
      W^.ChangeBounds(R);
      W^.Editor^.SetCurPtr(Col,Row);
    end
  else
    W:=TryToOpenFile(@R,P^.GetModuleName,Col,Row,true);
  if W<>nil then
    begin
      W^.Select;
      W^.Editor^.TrackCursor(true);
      W^.Editor^.SetHighlightRow(Row);
    end;
  if Assigned(Owner) then
    Owner^.Select;
  Desktop^.UnLock;
end;

procedure TMessageListBox.GotoSource;
var W: PSourceWindow;
    P: PMessageItem;
    Row,Col: sw_integer;
begin
  Message(Application,evBroadcast,cmClearLineHighlights,@Self);
  if Range=0 then Exit;
  P:=List^.At(Focused);
  if P^.Row=0 then Exit;
  Desktop^.Lock;
  if P^.Row>0 then Row:=P^.Row-1 else Row:=0;
  if P^.Col>0 then Col:=P^.Col-1 else Col:=0;
  W:=TryToOpenFile(nil,P^.GetModuleName,Col,Row,true);
  Message(Owner,evCommand,cmClose,nil);
  Desktop^.UnLock;
end;

procedure TMessageListBox.Draw;
var
  I, J, Item: Sw_Integer;
  NormalColor, SelectedColor, FocusedColor, Color: Word;
  ColWidth, CurCol, Indent: Integer;
  B: TDrawBuffer;
  Text: String;
  SCOff: Byte;
  TC: byte;
procedure MT(var C: word); begin if TC<>0 then C:=(C and $ff0f) or (TC and $f0); end;
begin
  if (Owner<>nil) then TC:=ord(Owner^.GetColor(6)) else TC:=0;
  if State and (sfSelected + sfActive) = (sfSelected + sfActive) then
  begin
    NormalColor := GetColor(1);
    FocusedColor := GetColor(3);
    SelectedColor := GetColor(4);
  end else
  begin
    NormalColor := GetColor(2);
    SelectedColor := GetColor(4);
  end;
  if Transparent then
    begin MT(NormalColor); MT(SelectedColor); end;
  if NoSelection then
     SelectedColor:=NormalColor;
  if HScrollBar <> nil then Indent := HScrollBar^.Value
  else Indent := 0;
  ColWidth := Size.X div NumCols + 1;
  for I := 0 to Size.Y - 1 do
  begin
    for J := 0 to NumCols-1 do
    begin
      Item := J*Size.Y + I + TopItem;
      CurCol := J*ColWidth;
      if (State and (sfSelected + sfActive) = (sfSelected + sfActive)) and
        (Focused = Item) and (Range > 0) then
      begin
        Color := FocusedColor;
        SetCursor(CurCol+1,I);
        SCOff := 0;
      end
      else if (Item < Range) and IsSelected(Item) then
      begin
        Color := SelectedColor;
        SCOff := 2;
      end
      else
      begin
        Color := NormalColor;
        SCOff := 4;
      end;
      MoveChar(B[CurCol], ' ', Color, ColWidth);
      if Item < Range then
      begin
        Text := GetText(Item, ColWidth + Indent);
        Text := Copy(Text,Indent,ColWidth);
        MoveStr(B[CurCol+1], Text, Color);
        if ShowMarkers then
        begin
          WordRec(B[CurCol]).Lo := Byte(SpecialChars[SCOff]);
          WordRec(B[CurCol+ColWidth-2]).Lo := Byte(SpecialChars[SCOff+1]);
        end;
      end;
      MoveChar(B[CurCol+ColWidth-1], #179, GetColor(5), 1);
    end;
    WriteLine(0, I, Size.X, 1, B);
  end;
end;

constructor TMessageListBox.Load(var S: TStream);
begin
  inherited Load(S);
end;

procedure TMessageListBox.Store(var S: TStream);
var OL: PCollection;
begin
  OL:=List;
  New(List, Init(1,1));

  inherited Store(S);

  Dispose(List, Done);
  List:=OL;
  { ^^^ nasty trick - has anyone a better idea how to avoid storing the
    collection? Pasting here a modified version of TListBox.Store+
    TAdvancedListBox.Store isn't a better solution, since by eventually
    changing the obj-hierarchy you'll always have to modify this, too - BG }
end;

destructor TMessageListBox.Done;
begin
  inherited Done;
  if List<>nil then Dispose(List, Done);
  if ModuleNames<>nil then Dispose(ModuleNames, Done);
end;

constructor TMessageItem.Init(AClass: longint; const AText: string; AModule: PString; ARow, ACol: sw_integer);
begin
  inherited Init;
  TClass:=AClass;
  Text:=NewStr(AText);
  Module:=AModule;
  Row:=ARow; Col:=ACol;
end;

function TMessageItem.GetText(MaxLen: Sw_integer): string;
var S: string;
begin
  if Text=nil then S:='' else S:=Text^;
  if (Module<>nil) then
     S:=NameAndExtOf(Module^)+'('+IntToStr(Row)+') '+S;
  if length(S)>MaxLen then S:=copy(S,1,MaxLen-2)+'..';
  GetText:=S;
end;

procedure TMessageItem.Selected;
begin
end;

function TMessageItem.GetModuleName: string;
begin
  GetModuleName:=GetStr(Module);
end;

destructor TMessageItem.Done;
begin
  inherited Done;
  if Text<>nil then DisposeStr(Text);
{  if Module<>nil then DisposeStr(Module);}
end;

{$ifdef OLDCOMP}

function TCompilerMessage.GetText(MaxLen: Integer): String;
var ClassS: string[20];
    S: string;
begin
  if TClass=
    V_Fatal       then ClassS:='Fatal'       else if TClass =
    V_Error       then ClassS:='Error'       else if TClass =
    V_Normal      then ClassS:=''            else if TClass =
    V_Warning     then ClassS:='Warning'     else if TClass =
    V_Note        then ClassS:='Note'        else if TClass =
    V_Hint        then ClassS:='Hint'        else if TClass =
    V_Macro       then ClassS:='Macro'       else if TClass =
    V_Procedure   then ClassS:='Procedure'   else if TClass =
    V_Conditional then ClassS:='Conditional' else if TClass =
    V_Info        then ClassS:='Info'        else if TClass =
    V_Status      then ClassS:='Status'      else if TClass =
    V_Used        then ClassS:='Used'        else if TClass =
    V_Tried       then ClassS:='Tried'       else if TClass =
    V_Debug       then ClassS:='Debug'
  else
   ClassS:='???';
  if ClassS<>'' then
   ClassS:=RExpand(ClassS,0)+': ';
  S:=ClassS;
  if (Module<>nil) {and (ID<>0)} then
     S:=S+NameAndExtOf(Module^)+'('+IntToStr(Row)+') ';
  if Text<>nil then S:=S+Text^;
  if length(S)>MaxLen then S:=copy(S,1,MaxLen-2)+'..';
  GetText:=S;
end;

{$endif}

constructor TProgramInfoWindow.Init;
var R,R2: TRect;
    HSB,VSB: PScrollBar;
    ST: PStaticText;
    C: word;
const White = 15;
begin
  Desktop^.GetExtent(R); R.A.Y:=R.B.Y-13;
  inherited Init(R, 'Program Information', wnNoNumber);

  HelpCtx:=hcInfoWindow;

  GetExtent(R); R.Grow(-1,-1); R.B.Y:=R.A.Y+3;
  C:=((Desktop^.GetColor(32+6) and $f0) or White)*256+Desktop^.GetColor(32+6);
  New(InfoST, Init(R,'', C)); InfoST^.GrowMode:=gfGrowHiX;
  InfoST^.DontWrap:=true;
  Insert(InfoST);
  GetExtent(R); R.Grow(-1,-1); Inc(R.A.Y,3); R.B.Y:=R.A.Y+1;
  New(ST, Init(R, CharStr('Ä', MaxViewWidth))); ST^.GrowMode:=gfGrowHiX; Insert(ST);
  GetExtent(R); R.Grow(-1,-1); Inc(R.A.Y,4);
  R2.Copy(R); Inc(R2.B.Y); R2.A.Y:=R2.B.Y-1;
  New(HSB, Init(R2)); HSB^.GrowMode:=gfGrowLoY+gfGrowHiY+gfGrowHiX; Insert(HSB);
  R2.Copy(R); Inc(R2.B.X); R2.A.X:=R2.B.X-1;
  New(VSB, Init(R2)); VSB^.GrowMode:=gfGrowLoX+gfGrowHiX+gfGrowHiY; Insert(VSB);
  New(LogLB, Init(R,HSB,VSB));
  LogLB^.GrowMode:=gfGrowHiX+gfGrowHiY;
  LogLB^.Transparent:=true;
  Insert(LogLB);
  Update;
end;

procedure TProgramInfoWindow.AddMessage(AClass: longint; Msg, Module: string; Line, Column: longint);
begin
  if AClass>=V_Info then Line:=0;
  LogLB^.AddItem(New(PCompilerMessage, Init(AClass, Msg, LogLB^.AddModuleName(Module), Line, Column)));
end;

procedure TProgramInfoWindow.ClearMessages;
begin
  LogLB^.Clear;
  ReDraw;
end;

procedure TProgramInfoWindow.SizeLimits(var Min, Max: TPoint);
begin
  inherited SizeLimits(Min,Max);
  Min.X:=30; Min.Y:=9;
end;

procedure TProgramInfoWindow.Close;
begin
  Hide;
end;

procedure TProgramInfoWindow.HandleEvent(var Event: TEvent);
begin
  case Event.What of
    evBroadcast :
      case Event.Command of
        cmUpdate :
          Update;
      end;
  end;
  inherited HandleEvent(Event);
end;

procedure TProgramInfoWindow.Update;
begin
  InfoST^.SetText(
    {#13+ }
    '   Current module : '+MainFile+#13+
    '   Last exit code : '+IntToStr(LastExitCode)+#13+
    ' Available memory : '+IntToStrL(MemAvail div 1024,5)+'K'+#13+
    ''
  );
end;

destructor TProgramInfoWindow.Done;
begin
  inherited Done;
  ProgramInfoWindow:=nil;
end;

constructor TTab.Init(var Bounds: TRect; ATabDef: PTabDef);
begin
  inherited Init(Bounds);
  Options:=Options or ofSelectable or ofFirstClick or ofPreProcess or ofPostProcess;
  GrowMode:=gfGrowHiX+gfGrowHiY+gfGrowRel;
  TabDefs:=ATabDef;
  ActiveDef:=-1;
  SelectTab(0);
  ReDraw;
end;

function TTab.TabCount: integer;
var i: integer;
    P: PTabDef;
begin
  I:=0; P:=TabDefs;
  while (P<>nil) do
    begin
      Inc(I);
      P:=P^.Next;
    end;
  TabCount:=I;
end;

function TTab.AtTab(Index: integer): PTabDef;
var i: integer;
    P: PTabDef;
begin
  i:=0; P:=TabDefs;
  while (I<Index) do
    begin
      if P=nil then RunError($AA);
      P:=P^.Next;
      Inc(i);
    end;
  AtTab:=P;
end;

procedure TTab.SelectTab(Index: integer);
var P: PTabItem;
    V: PView;
begin
  if ActiveDef<>Index then
  begin
    if Owner<>nil then Owner^.Lock;
    Lock;
    { --- Update --- }
    if TabDefs<>nil then
       begin
         DefCount:=1;
         while AtTab(DefCount-1)^.Next<>nil do Inc(DefCount);
       end
       else DefCount:=0;
    if ActiveDef<>-1 then
    begin
      P:=AtTab(ActiveDef)^.Items;
      while P<>nil do
        begin
          if P^.View<>nil then Delete(P^.View);
          P:=P^.Next;
        end;
    end;
    ActiveDef:=Index;
    P:=AtTab(ActiveDef)^.Items;
    while P<>nil do
      begin
        if P^.View<>nil then Insert(P^.View);
        P:=P^.Next;
      end;
    V:=AtTab(ActiveDef)^.DefItem;
    if V<>nil then V^.Select;
    ReDraw;
    { --- Update --- }
    UnLock;
    if Owner<>nil then Owner^.UnLock;
    DrawView;
  end;
end;

procedure TTab.ChangeBounds(var Bounds: TRect);
var D: TPoint;
procedure DoCalcChange(P: PView); {$ifndef FPC}far;{$endif}
var
  R: TRect;
begin
  if P^.Owner=nil then Exit; { it think this is a bug in TV }
  P^.CalcBounds(R, D);
  P^.ChangeBounds(R);
end;
var
    P: PTabItem;
    I: integer;
begin
  D.X := Bounds.B.X - Bounds.A.X - Size.X;
  D.Y := Bounds.B.Y - Bounds.A.Y - Size.Y;
  inherited ChangeBounds(Bounds);
  for I:=0 to TabCount-1 do
  if I<>ActiveDef then
    begin
      P:=AtTab(I)^.Items;
      while P<>nil do
        begin
          if P^.View<>nil then DoCalcChange(P^.View);
          P:=P^.Next;
        end;
    end;
end;

procedure TTab.HandleEvent(var Event: TEvent);
var Index : integer;
    I     : integer;
    X     : integer;
    Len   : byte;
    P     : TPoint;
    V     : PView;
    CallOrig: boolean;
    LastV : PView;
    FirstV: PView;
function FirstSelectable: PView;
var
    FV : PView;
begin
  FV := First;
  while (FV<>nil) and ((FV^.Options and ofSelectable)=0) and (FV<>Last) do
        FV:=FV^.Next;
  if FV<>nil then
    if (FV^.Options and ofSelectable)=0 then FV:=nil;
  FirstSelectable:=FV;
end;
function LastSelectable: PView;
var
    LV : PView;
begin
  LV := Last;
  while (LV<>nil) and ((LV^.Options and ofSelectable)=0) and (LV<>First) do
        LV:=LV^.Prev;
  if LV<>nil then
    if (LV^.Options and ofSelectable)=0 then LV:=nil;
  LastSelectable:=LV;
end;
begin
  if (Event.What and evMouseDown)<>0 then
     begin
       MakeLocal(Event.Where,P);
       if P.Y<3 then
          begin
            Index:=-1; X:=1;
            for i:=0 to DefCount-1 do
                begin
                  Len:=CStrLen(AtTab(i)^.Name^);
                  if (P.X>=X) and (P.X<=X+Len+1) then Index:=i;
                  X:=X+Len+3;
                end;
            if Index<>-1 then
               SelectTab(Index);
          end;
     end;
  if Event.What=evKeyDown then
     begin
       Index:=-1;
       case Event.KeyCode of
            kbTab,kbShiftTab  :
              if GetState(sfSelected) then
                 begin
                   if Current<>nil then
                   begin
                   LastV:=LastSelectable; FirstV:=FirstSelectable;
                   if ((Current=LastV) or (Current=PLabel(LastV)^.Link)) and (Event.KeyCode=kbShiftTab) then
                      begin
                        if Owner<>nil then Owner^.SelectNext(true);
                      end else
                   if ((Current=FirstV) or (Current=PLabel(FirstV)^.Link)) and (Event.KeyCode=kbTab) then
                      begin
                        Lock;
                        if Owner<>nil then Owner^.SelectNext(false);
                        UnLock;
                      end else
                   SelectNext(Event.KeyCode=kbShiftTab);
                   ClearEvent(Event);
                   end;
                 end;
       else
       for I:=0 to DefCount-1 do
           begin
             if Upcase(GetAltChar(Event.KeyCode))=AtTab(I)^.ShortCut
                then begin
                       Index:=I;
                       ClearEvent(Event);
                       Break;
                     end;
           end;
       end;
       if Index<>-1 then
          begin
            Select;
            SelectTab(Index);
            V:=AtTab(ActiveDef)^.DefItem;
            if V<>nil then V^.Focus;
          end;
     end;
  CallOrig:=true;
  if Event.What=evKeyDown then
     begin
     if ((Owner<>nil) and (Owner^.Phase=phPostProcess) and (GetAltChar(Event.KeyCode)<>#0)) or GetState(sfFocused)
        then
        else CallOrig:=false;
     end;
  if CallOrig then inherited HandleEvent(Event);
end;

function TTab.GetPalette: PPalette;
begin
  GetPalette:=nil;
end;

procedure TTab.Draw;
var B     : TDrawBuffer;
    i     : integer;
    C1,C2,C3,C : word;
    HeaderLen  : integer;
    X,X2       : integer;
    Name       : PString;
    ActiveKPos : integer;
    ActiveVPos : integer;
    FC   : char;
    ClipR      : TRect;
procedure SWriteBuf(X,Y,W,H: integer; var Buf);
var i: integer;
begin
  if Y+H>Size.Y then H:=Size.Y-Y;
  if X+W>Size.X then W:=Size.X-X;
  if Buffer=nil then WriteBuf(X,Y,W,H,Buf)
                else for i:=1 to H do
                         Move(Buf,Buffer^[X+(Y+i-1)*Size.X],W*2);
end;
procedure ClearBuf;
begin
  MoveChar(B,' ',C1,Size.X);
end;
begin
  if InDraw then Exit;
  InDraw:=true;
  { - Start of TGroup.Draw - }
  if Buffer = nil then
  begin
    GetBuffer;
  end;
  { - Start of TGroup.Draw - }

  C1:=GetColor(1); C2:=(GetColor(7) and $f0 or $08)+GetColor(9)*256; C3:=GetColor(8)+GetColor({9}8)*256;
  HeaderLen:=0; for i:=0 to DefCount-1 do HeaderLen:=HeaderLen+CStrLen(AtTab(i)^.Name^)+3; Dec(HeaderLen);
  if HeaderLen>Size.X-2 then HeaderLen:=Size.X-2;

  { --- 1. sor --- }
  ClearBuf; MoveChar(B[0],'³',C1,1); MoveChar(B[HeaderLen+1],'³',C1,1);
  X:=1;
  for i:=0 to DefCount-1 do
      begin
        Name:=AtTab(i)^.Name; X2:=CStrLen(Name^);
        if i=ActiveDef
           then begin
                  ActiveKPos:=X-1;
                  ActiveVPos:=X+X2+2;
                  if GetState(sfFocused) then C:=C3 else C:=C2;
                end
           else C:=C2;
        MoveCStr(B[X],' '+Name^+' ',C); X:=X+X2+3;
        MoveChar(B[X-1],'³',C1,1);
      end;
  SWriteBuf(0,1,Size.X,1,B);

  { --- 0. sor --- }
  ClearBuf; MoveChar(B[0],'Ú',C1,1);
  X:=1;
  for i:=0 to DefCount-1 do
      begin
        if I<ActiveDef then FC:='Ú'
                       else FC:='¿';
        X2:=CStrLen(AtTab(i)^.Name^)+2;
        MoveChar(B[X+X2],{'Â'}FC,C1,1);
        if i=DefCount-1 then X2:=X2+1;
        if X2>0 then
        MoveChar(B[X],'Ä',C1,X2);
        X:=X+X2+1;
      end;
  MoveChar(B[HeaderLen+1],'¿',C1,1);
  MoveChar(B[ActiveKPos],'Ú',C1,1); MoveChar(B[ActiveVPos],'¿',C1,1);
  SWriteBuf(0,0,Size.X,1,B);

  { --- 2. sor --- }
  MoveChar(B[1],'Ä',C1,Max(HeaderLen,0)); MoveChar(B[HeaderLen+2],'Ä',C1,Max(Size.X-HeaderLen-3,0));
  MoveChar(B[Size.X-1],'¿',C1,1);
  MoveChar(B[ActiveKPos],'Ù',C1,1);
  if ActiveDef=0 then MoveChar(B[0],'³',C1,1)
                 else MoveChar(B[0],{'Ã'}'Ú',C1,1);
  MoveChar(B[HeaderLen+1],'Ä'{'Á'},C1,1); MoveChar(B[ActiveVPos],'À',C1,1);
  MoveChar(B[ActiveKPos+1],' ',C1,Max(ActiveVPos-ActiveKPos-1,0));
  SWriteBuf(0,2,Size.X,1,B);

  { --- marad‚k sor --- }
  ClearBuf; MoveChar(B[0],'³',C1,1); MoveChar(B[Size.X-1],'³',C1,1);
  SWriteBuf(0,3,Size.X,Size.Y-4,B);

  { --- Size.X . sor --- }
  MoveChar(B[0],'À',C1,1); MoveChar(B[1],'Ä',C1,Max(Size.X-2,0)); MoveChar(B[Size.X-1],'Ù',C1,1);
  SWriteBuf(0,Size.Y-1,Size.X,1,B);

  { - End of TGroup.Draw - }
  if Buffer <> nil then
  begin
    Lock;
    Redraw;
    UnLock;
  end;
  if Buffer <> nil then WriteBuf(0, 0, Size.X, Size.Y, Buffer^) else
  begin
    GetClipRect(ClipR);
    Redraw;
    GetExtent(ClipR);
  end;
  { - End of TGroup.Draw - }
  InDraw:=false;
end;

function TTab.Valid(Command: Word): Boolean;
var PT : PTabDef;
    PI : PTabItem;
    OK : boolean;
begin
  OK:=true;
  PT:=TabDefs;
  while (PT<>nil) and (OK=true) do
        begin
          PI:=PT^.Items;
          while (PI<>nil) and (OK=true) do
                begin
                  if PI^.View<>nil then OK:=OK and PI^.View^.Valid(Command);
                  PI:=PI^.Next;
                end;
          PT:=PT^.Next;
        end;
  Valid:=OK;
end;

procedure TTab.SetState(AState: Word; Enable: Boolean);
begin
  inherited SetState(AState,Enable);
  if (AState and sfFocused)<>0 then DrawView;
end;

destructor TTab.Done;
var P,X: PTabDef;
procedure DeleteViews(P: PView); {$ifndef FPC}far;{$endif}
begin
  if P<>nil then Delete(P);
end;
begin
  ForEach(@DeleteViews);
  inherited Done;
  P:=TabDefs;
  while P<>nil do
        begin
          X:=P^.Next;
          DisposeTabDef(P);
          P:=X;
        end;
end;

constructor TScreenView.Init(var Bounds: TRect; AHScrollBar, AVScrollBar: PScrollBar;
              AScreen: PScreen);
begin
  inherited Init(Bounds,AHScrollBar,AVScrollBar);
  Screen:=AScreen;
  if Screen=nil then
   Fail;
  SetState(sfCursorVis,true);
  Update;
end;

procedure TScreenView.Update;
begin
  SetLimit(UserScreen^.GetWidth,UserScreen^.GetHeight);
  DrawView;
end;

procedure TScreenView.HandleEvent(var Event: TEvent);
begin
  case Event.What of
    evBroadcast :
      case Event.Command of
        cmUpdate  : Update;
      end;
  end;
  inherited HandleEvent(Event);
end;

procedure TScreenView.Draw;
var B: TDrawBuffer;
    X,Y: integer;
    Text,Attr: string;
    P: TPoint;
begin
  Screen^.GetCursorPos(P);
  for Y:=Delta.Y to Delta.Y+Size.Y-1 do
  begin
    if Y<Screen^.GetHeight then
      Screen^.GetLine(Y,Text,Attr)
    else
       begin Text:=''; Attr:=''; end;
    Text:=copy(Text,Delta.X+1,255); Attr:=copy(Attr,Delta.X+1,255);
    MoveChar(B,' ',0,Size.X);
    for X:=1 to length(Text) do
      MoveChar(B[X-1],Text[X],ord(Attr[X]),1);
    WriteLine(0,Y-Delta.Y,Size.X,1,B);
  end;
  SetCursor(P.X-Delta.X,P.Y-Delta.Y);
end;

constructor TScreenWindow.Init(AScreen: PScreen; ANumber: integer);
var R: TRect;
    VSB,HSB: PScrollBar;
begin
  Desktop^.GetExtent(R);
  inherited Init(R, 'User screen', ANumber);
  Options:=Options or ofTileAble;
  GetExtent(R); R.Grow(-1,-1); R.Move(1,0); R.A.X:=R.B.X-1;
  New(VSB, Init(R)); VSB^.Options:=VSB^.Options or ofPostProcess;
  VSB^.GrowMode:=gfGrowLoX+gfGrowHiX+gfGrowHiY; Insert(VSB);
  GetExtent(R); R.Grow(-1,-1); R.Move(0,1); R.A.Y:=R.B.Y-1;
  New(HSB, Init(R)); HSB^.Options:=HSB^.Options or ofPostProcess;
  HSB^.GrowMode:=gfGrowLoY+gfGrowHiX+gfGrowHiY; Insert(HSB);
  GetExtent(R); R.Grow(-1,-1);
  New(ScreenView, Init(R, HSB, VSB, AScreen));
  ScreenView^.GrowMode:=gfGrowHiX+gfGrowHiY;
  Insert(ScreenView);

  UserScreenWindow:=@Self;
end;

destructor TScreenWindow.Done;
begin
  inherited Done;
  UserScreenWindow:=nil;
end;

const InTranslate : boolean = false;

procedure TranslateMouseClick(View: PView; var Event: TEvent);
procedure TranslateAction(Action: integer);
var E: TEvent;
begin
  if Action<>acNone then
  begin
    E:=Event;
    E.What:=evMouseDown; E.Buttons:=mbLeftButton;
    View^.HandleEvent(E);
    Event.What:=evCommand;
    Event.Command:=ActionCommands[Action];
  end;
end;
begin
  if InTranslate then Exit;
  InTranslate:=true;
  case Event.What of
    evMouseDown :
      if (GetShiftState and kbAlt)<>0 then
        TranslateAction(AltMouseAction) else
      if (GetShiftState and kbCtrl)<>0 then
        TranslateAction(CtrlMouseAction);
  end;
  InTranslate:=false;
end;

function GetNextEditorBounds(var Bounds: TRect): boolean;
var P: PView;
begin
  P:=Desktop^.First;
  while P<>nil do
  begin
    if P^.HelpCtx=hcSourceWindow then Break;
    P:=P^.NextView;
  end;
  if P=nil then Desktop^.GetExtent(Bounds) else
     begin
       P^.GetBounds(Bounds);
       Inc(Bounds.A.X); Inc(Bounds.A.Y);
     end;
  GetNextEditorBounds:=P<>nil;
end;

function OpenEditorWindow(Bounds: PRect; FileName: string; CurX,CurY: sw_integer): PSourceWindow;
var R: TRect;
    W: PSourceWindow;
begin
  if Assigned(Bounds) then R.Copy(Bounds^) else
    GetNextEditorBounds(R);
  PushStatus('Opening source file... ('+SmartPath(FileName)+')');
  New(W, Init(R, FileName));
  if W<>nil then
  begin
    if (CurX<>0) or (CurY<>0) then
       with W^.Editor^ do
       begin
         SetCurPtr(CurX,CurY);
         TrackCursor(true);
       end;
    W^.HelpCtx:=hcSourceWindow;
    Desktop^.Insert(W);
    If assigned(BreakpointCollection) then
      BreakPointCollection^.ShowBreakpoints(W);
    Message(Application,evBroadcast,cmUpdate,nil);
  end;
  PopStatus;
  OpenEditorWindow:=W;
end;

function TryToOpenFile(Bounds: PRect; FileName: string; CurX,CurY: sw_integer;tryexts:boolean): PSourceWindow;
var D : DirStr;
    N : NameStr;
    E : ExtStr;
    DrStr : String;

  function CheckDir(NewDir: DirStr; NewName: NameStr; NewExt: ExtStr): boolean;
  var OK: boolean;
  begin
    NewDir:=CompleteDir(NewDir);
    OK:=ExistsFile(NewDir+NewName+NewExt);
    if OK then begin D:=NewDir; N:=NewName; E:=NewExt; end;
    CheckDir:=OK;
  end;

  function CheckExt(NewExt: ExtStr): boolean;
  var OK: boolean;
  begin
    OK:=false;
    if D<>'' then OK:=CheckDir(D,N,NewExt) else
      if CheckDir('.'+DirSep,N,NewExt) then OK:=true;
    CheckExt:=OK;
  end;

  function TryToOpen(const DD : dirstr): PSourceWindow;
  var Found: boolean;
      W : PSourceWindow;
  begin
    D:=CompleteDir(DD);
    Found:=true;
    if (E<>'') or (not tryexts) then
     Found:=CheckExt(E)
    else
     if CheckExt('.pp') then
      Found:=true
    else
     if CheckExt('.pas') then
      Found:=true
    else
     if CheckExt('.inc') then
      Found:=true
    else
      Found:=false;
    if Found=false then
      W:=nil
    else
      begin
        FileName:=FExpand(D+N+E);
        W:=OpenEditorWindow(Bounds,FileName,CurX,CurY);
      end;
    TryToOpen:=W;
  end;

  function SearchOnDesktop: PSourceWindow;
  var W: PWindow;
      I: integer;
      Found: boolean;
      SName : string;
  begin
    for I:=1 to 100 do
    begin
      W:=SearchWindowWithNo(I);
      if (W<>nil) and (W^.HelpCtx=hcSourceWindow) then
        begin
          if (D='') then
            SName:=NameAndExtOf(PSourceWindow(W)^.Editor^.FileName)
          else
            SName:=PSourceWindow(W)^.Editor^.FileName;
          SName:=UpcaseStr(SName);

          if (E<>'') or (not tryexts) then
            begin
              if D<>'' then
                Found:=SName=UpcaseStr(D+N+E)
              else
                Found:=SName=UpcaseStr(N+E);
            end
          else
            begin
              Found:=SName=UpcaseStr(N+'.pp');
              if Found=false then
                Found:=SName=UpcaseStr(N+'.pas');
            end;
          if Found then Break;
        end;
    end;
    if Found=false then W:=nil;
    SearchOnDesktop:=PSourceWindow(W);
  end;

var
  W : PSourceWindow;
begin
  FSplit(FileName,D,N,E);
  W:=SearchOnDesktop;
  if W<>nil then
    begin
      NewEditorOpened:=false;
{      if assigned(Bounds) then
        W^.ChangeBounds(Bounds^);}
      W^.Editor^.SetCurPtr(CurX,CurY);
    end
  else
    begin
      DrStr:=GetSourceDirectories;
      While pos(';',DrStr)>0 do
        Begin
           W:=TryToOpen(Copy(DrStr,1,pos(';',DrStr)-1));
           if assigned(W) then
             break;
           DrStr:=Copy(DrStr,pos(';',DrStr)+1,255);
        End;
      if not assigned(W) then
        W:=TryToOpen(DrStr);
      NewEditorOpened:=W<>nil;
      if assigned(W) then
        W^.Editor^.SetCurPtr(CurX,CurY);
    end;
  TryToOpenFile:=W;
end;

function StartEditor(Editor: PCodeEditor; FileName: string): boolean;
var OK: boolean;
    E: PFileEditor;
    R: TRect;
begin
  R.Assign(0,0,0,0);
  New(E, Init(R,nil,nil,nil,FileName));
  OK:=E<>nil;
  if OK then OK:=E^.LoadFile;
  if OK then
    begin
      E^.SelectAll(true);
      Editor^.InsertFrom(E);
      Editor^.SetCurPtr(0,0);
      Editor^.SelectAll(false);
      Dispose(E, Done);
    end;
  StartEditor:=OK;
end;

constructor TTextScroller.Init(var Bounds: TRect; ASpeed: integer; AText: PUnsortedStringCollection);
begin
  inherited Init(Bounds,'');
  EventMask:=EventMask or evIdle;
  Speed:=ASpeed; Lines:=AText;
end;

function TTextScroller.GetLineCount: integer;
var Count: integer;
begin
  if Lines=nil then Count:=0 else
    Count:=Lines^.Count;
  GetLineCount:=Count;
end;

function TTextScroller.GetLine(I: integer): string;
var S: string;
begin
  if I<Lines^.Count then
    S:=GetStr(Lines^.At(I))
  else
    S:='';
  GetLine:=S;
end;

procedure TTextScroller.HandleEvent(var Event: TEvent);
begin
  case Event.What of
    evIdle :
      Update;
  end;
  inherited HandleEvent(Event);
end;

procedure TTextScroller.Update;
begin
  if abs(GetDosTicks-LastTT)<Speed then Exit;
  Scroll;
  LastTT:=GetDosTicks;
end;

procedure TTextScroller.Reset;
begin
  TopLine:=0;
  LastTT:=GetDosTicks;
  DrawView;
end;

procedure TTextScroller.Scroll;
begin
  Inc(TopLine);
  if TopLine>=GetLineCount then
    Reset;
  DrawView;
end;

procedure TTextScroller.Draw;
var B: TDrawBuffer;
    C: word;
    Count,Y: integer;
    S: string;
begin
  C:=GetColor(1);
  Count:=GetLineCount;
  for Y:=0 to Size.Y-1 do
    begin
      if Count=0 then S:='' else
        S:=GetLine((TopLine+Y) mod Count);
      if copy(S,1,1)=^C then
        S:=CharStr(' ',Max(0,(Size.X-(length(S)-1)) div 2))+copy(S,2,255);
      MoveChar(B,' ',C,Size.X);
      MoveStr(B,S,C);
      WriteLine(0,Y,Size.X,1,B);
    end;
end;

destructor TTextScroller.Done;
begin
  inherited Done;
  if Lines<>nil then Dispose(Lines, Done);
end;

constructor TFPAboutDialog.Init;
var R,R2: TRect;
    C: PUnsortedStringCollection;
    I: integer;
    OSStr: string;
procedure AddLine(S: string);
begin
  C^.Insert(NewStr(S));
end;
begin
  OSStr:='';
{$ifdef go32v2}
  OSStr:='Dos';
{$endif}
{$ifdef tp}
  OSStr:='Dos';
{$endif}
{$ifdef linux}
  OSStr:='Linux';
{$endif}
{$ifdef win32}
  OSStr:='Win32';
{$endif}
{$ifdef os2}
  OSStr:='OS/2';
{$endif}
  R.Assign(0,0,38,12);
  inherited Init(R, 'About');

  GetExtent(R); R.Grow(-3,-2);
  R2.Copy(R); R2.B.Y:=R2.A.Y+1;
  Insert(New(PStaticText, Init(R2, ^C'FreePascal IDE for '+OSStr)));
  R2.Move(0,1);
  Insert(New(PStaticText, Init(R2, ^C' Version '+VersionStr)));
  R2.Move(0,1);
  Insert(New(PStaticText, Init(R2, ^C'(Compiler Version '+Version_String+')')));
  R2.Move(0,2);
  Insert(New(PStaticText, Init(R2, ^C'Copyright (C) 1998-99 by')));
  R2.Move(0,2);
  Insert(New(PStaticText, Init(R2, ^C'B‚rczi G bor')));
  R2.Move(0,1);
  Insert(New(PStaticText, Init(R2, ^C'and')));
  R2.Move(0,1);
  Insert(New(PStaticText, Init(R2, ^C'Peter Vreman')));

  New(C, Init(50,10));
  for I:=1 to 7 do
  AddLine('');
  AddLine(^C'< Original concept >');
  AddLine(^C'Borland International, Inc.');
  AddLine('');
  AddLine(^C'< Compiler development >');
  AddLine(^C'Carl-Eric Codere');
  AddLine(^C'Daniel Mantione');
  AddLine(^C'Florian Kl„mpfl');
  AddLine(^C'Jonas Maebe');
  AddLine(^C'Mich„el Van Canneyt');
  AddLine(^C'Peter Vreman');
  AddLine(^C'Pierre Muller');
  AddLine('');
  AddLine(^C'< IDE development >');
  AddLine(^C'B‚rczi G bor');
  AddLine(^C'Peter Vreman');
  AddLine(^C'Pierre Muller');
  AddLine('');

  GetExtent(R);
  R.Grow(-1,-1); Inc(R.A.Y,3);
  New(Scroller, Init(R, 10, C));
  Scroller^.Hide;
  Insert(Scroller);
  R.Move(0,-1); R.B.Y:=R.A.Y+1;
  New(TitleST, Init(R, ^C'Team'));
  TitleST^.Hide;
  Insert(TitleST);

  InsertOK(@Self);
end;

procedure TFPAboutDialog.ToggleInfo;
begin
  if Scroller=nil then Exit;
  if Scroller^.GetState(sfVisible) then
    begin
      Scroller^.Hide;
      TitleST^.Hide;
    end
  else
    begin
      Scroller^.Reset;
      Scroller^.Show;
      TitleST^.Show;
    end;
end;

procedure TFPAboutDialog.HandleEvent(var Event: TEvent);
begin
  case Event.What of
    evKeyDown :
      case Event.KeyCode of
        kbAltI : { just like in BP }
          begin
            ToggleInfo;
            ClearEvent(Event);
          end;
      end;
  end;
  inherited HandleEvent(Event);
end;

constructor TFPASCIIChart.Init;
begin
  inherited Init;
  HelpCtx:=hcASCIITable;
  Number:=SearchFreeWindowNo;
  ASCIIChart:=@Self;
end;

procedure TFPASCIIChart.HandleEvent(var Event: TEvent);
begin
  case Event.What of
    evKeyDown :
      case Event.KeyCode of
        kbEsc :
          begin
            Close;
            ClearEvent(Event);
          end;
      end;
  end;
  inherited HandleEvent(Event);
end;

destructor TFPASCIIChart.Done;
begin
  ASCIIChart:=nil;
  inherited Done;
end;

function TVideoModeListBox.GetText(Item: pointer; MaxLen: sw_integer): string;
var P: PVideoModeList;
    S: string;
begin
  P:=Item;
  S:=IntToStr(P^.Col)+'x'+IntToStr(P^.Row)+' ';
  if P^.Color then
    S:=S+'color'
  else
    S:=S+'mono';
  GetText:=copy(S,1,MaxLen);
end;

{$ifdef VESA}
function VESASetVideoModeProc(const VideoMode: TVideoMode; Params: Longint): Boolean; {$ifndef FPC}far;{$endif}
begin
  VESASetMode(Params);
end;

procedure InitVESAScreenModes;
var ML: TVESAModeList;
    MI: TVESAModeInfoBlock;
    I: integer;
begin
  if VESAInit=false then Exit;
  if VESAGetModeList(ML)=false then Exit;
  for I:=1 to ML.Count do
    begin
      if VESAGetModeInfo(ML.Modes[I],MI) then
      with MI do
        if (Attributes and vesa_vma_GraphicsMode)=0 then
          RegisterVideoMode(XResolution,YResolution,
            (Attributes and vesa_vma_ColorMode)<>0,{$ifdef FPC}@{$endif}VESASetVideoModeProc,ML.Modes[I]);
    end;
end;
{$endif}

procedure NoDebugger;
begin
  InformationBox('No debugger support available.',nil);
end;

procedure RegisterFPViews;
begin
  RegisterType(RSourceEditor);
  RegisterType(RSourceWindow);
  RegisterType(RFPHelpViewer);
  RegisterType(RFPHelpWindow);
  RegisterType(RClipboardWindow);
  RegisterType(RMessageListBox);
end;


END.
{
  $Log$
  Revision 1.31  1999-06-02 11:19:13  pierre
   * @ is now required for FPC for procedure address passing in functions

  Revision 1.30  1999/05/22 13:44:33  peter
    * fixed couple of bugs

  Revision 1.29  1999/04/15 08:58:08  peter
    * syntax highlight fixes
    * browser updates

  Revision 1.28  1999/04/07 21:55:56  peter
    + object support for browser
    * html help fixes
    * more desktop saving things
    * NODEBUG directive to exclude debugger

  Revision 1.27  1999/04/01 10:27:06  pierre
   + file(line) in start of message added

  Revision 1.26  1999/03/23 16:16:41  peter
    * linux fixes

  Revision 1.25  1999/03/23 15:11:37  peter
    * desktop saving things
    * vesa mode
    * preferences dialog

  Revision 1.24  1999/03/21 22:51:37  florian
    + functional screen mode switching added

  Revision 1.23  1999/03/19 16:04:33  peter
    * new compiler dialog

  Revision 1.22  1999/03/16 00:44:45  peter
    * forgotten in last commit :(

  Revision 1.21  1999/03/08 14:58:16  peter
    + prompt with dialogs for tools

  Revision 1.20  1999/03/01 15:42:08  peter
    + Added dummy entries for functions not yet implemented
    * MenuBar didn't update itself automatically on command-set changes
    * Fixed Debugging/Profiling options dialog
    * TCodeEditor converts spaces to tabs at save only if efUseTabChars is set
    * efBackSpaceUnindents works correctly
    + 'Messages' window implemented
    + Added '$CAP MSG()' and '$CAP EDIT' to available tool-macros
    + Added TP message-filter support (for ex. you can call GREP thru
      GREP2MSG and view the result in the messages window - just like in TP)
    * A 'var' was missing from the param-list of THelpFacility.TopicSearch,
      so topic search didn't work...
    * In FPHELP.PAS there were still context-variables defined as word instead
      of THelpCtx
    * StdStatusKeys() was missing from the statusdef for help windows
    + Topic-title for index-table can be specified when adding a HTML-files

  Revision 1.19  1999/02/22 11:51:39  peter
    * browser updates from gabor

  Revision 1.18  1999/02/22 11:29:38  pierre
    + added col info in MessageItem
    + grep uses HighLightExts and should work for linux

  Revision 1.17  1999/02/22 02:15:22  peter
    + default extension for save in the editor
    + Separate Text to Find for the grep dialog
    * fixed redir crash with tp7

  Revision 1.16  1999/02/19 18:43:49  peter
    + open dialog supports mask list

  Revision 1.15  1999/02/17 15:04:02  pierre
   + file(line) added in TProgramInfo message list

  Revision 1.14  1999/02/16 12:45:18  pierre
   * GDBWindow size and grow corrected

  Revision 1.13  1999/02/15 09:36:06  pierre
    * // comment ends at end of line !
      GDB window changed !
      now all is in a normal text editor, but pressing
      Enter key will send part of line before cursor to GDB !

  Revision 1.12  1999/02/11 19:07:25  pierre
    * GDBWindow redesigned :
      normal editor apart from
      that any kbEnter will send the line (for begin to cursor)
      to GDB command !
      GDBWindow opened in Debugger Menu
       still buggy :
       -echo should not be present if at end of text
       -GDBWindow becomes First after each step (I don't know why !)

  Revision 1.11  1999/02/11 13:08:39  pierre
   + TGDBWindow : direct gdb input/output

  Revision 1.10  1999/02/10 09:42:52  pierre
    + DoneReservedWords to avoid memory leaks
    * TMessageItem Module field was not disposed

  Revision 1.9  1999/02/05 12:12:02  pierre
    + SourceDir that stores directories for sources that the
      compiler should not know about
      Automatically asked for addition when a new file that
      needed filedialog to be found is in an unknown directory
      Stored and retrieved from INIFile
    + Breakpoints conditions added to INIFile
    * Breakpoints insterted and removed at debin and end of debug session

  Revision 1.8  1999/02/04 17:45:23  pierre
    + BrowserAtCursor started
    * bug in TryToOpenFile removed

  Revision 1.7  1999/02/04 13:32:11  pierre
    * Several things added (I cannot commit them independently !)
    + added TBreakpoint and TBreakpointCollection
    + added cmResetDebugger,cmGrep,CmToggleBreakpoint
    + Breakpoint list in INIFile
    * Select items now also depend of SwitchMode
    * Reading of option '-g' was not possible !
    + added search for -Fu args pathes in TryToOpen
    + added code for automatic opening of FileDialog
      if source not found

  Revision 1.6  1999/01/21 11:54:27  peter
    + tools menu
    + speedsearch in symbolbrowser
    * working run command

  Revision 1.5  1999/01/14 21:42:25  peter
    * source tracking from Gabor

  Revision 1.4  1999/01/12 14:29:42  peter
    + Implemented still missing 'switch' entries in Options menu
    + Pressing Ctrl-B sets ASCII mode in editor, after which keypresses (even
      ones with ASCII < 32 ; entered with Alt+<###>) are interpreted always as
      ASCII chars and inserted directly in the text.
    + Added symbol browser
    * splitted fp.pas to fpide.pas

  Revision 1.3  1999/01/04 11:49:53  peter
   * 'Use tab characters' now works correctly
   + Syntax highlight now acts on File|Save As...
   + Added a new class to syntax highlight: 'hex numbers'.
   * There was something very wrong with the palette managment. Now fixed.
   + Added output directory (-FE<xxx>) support to 'Directories' dialog...
   * Fixed some possible bugs in Running/Compiling, and the compilation/run
     process revised

  Revision 1.2  1998/12/28 15:47:54  peter
    + Added user screen support, display & window
    + Implemented Editor,Mouse Options dialog
    + Added location of .INI and .CFG file
    + Option (INI) file managment implemented (see bottom of Options Menu)
    + Switches updated
    + Run program

  Revision 1.4  1998/12/22 10:39:53  peter
    + options are now written/read
    + find and replace routines

}