freepascal.compiler/ide/text/fpcodtmp.pas

unit FPCodTmp; { Code Templates }

interface

uses Objects,Drivers,Dialogs,
     WUtils,WViews,WEditor,
     FPViews;

type
    PCodeTemplate = ^TCodeTemplate;
    TCodeTemplate = object(TObject)
      constructor Init(const AShortCut: string; AText: PUnsortedStringCollection);
      function    GetShortCut: string;
      procedure   GetText(AList: PUnsortedStringCollection);
      procedure   SetShortCut(const AShortCut: string);
      procedure   SetText(AList: PUnsortedStringCollection);
      procedure   GetParams(var AShortCut: string; Lines: PUnsortedStringCollection);
      procedure   SetParams(const AShortCut: string; Lines: PUnsortedStringCollection);
      constructor Load(var S: TStream);
      procedure   Store(var S: TStream);
      destructor  Done; virtual;
    private
      ShortCut: PString;
      Text: PUnsortedStringCollection;
    end;

    PCodeTemplateCollection = ^TCodeTemplateCollection;
    TCodeTemplateCollection = object(TSortedCollection)
      function Compare(Key1, Key2: Pointer): sw_Integer; virtual;
      function SearchByShortCut(const ShortCut: string): PCodeTemplate; virtual;
    end;

    PCodeTemplateListBox = ^TCodeTemplateListBox;
    TCodeTemplateListBox = object(TAdvancedListBox)
      function GetText(Item,MaxLen: Sw_Integer): String; virtual;
    end;

    PCodeTemplateDialog = ^TCodeTemplateDialog;
    TCodeTemplateDialog = object(TCenterDialog)
      constructor Init(const ATitle: string; ATemplate: PCodeTemplate);
      function    Execute: Word; virtual;
    private
      Template   : PCodeTemplate;
      ShortcutIL : PInputLine;
      CodeMemo   : PFPCodeMemo;
    end;

    PCodeTemplatesDialog = ^TCodeTemplatesDialog;
    TCodeTemplatesDialog = object(TCenterDialog)
      constructor Init;
      function    Execute: Word; virtual;
      procedure   HandleEvent(var Event: TEvent); virtual;
    private
      CodeTemplatesLB : PCodeTemplateListBox;
      TemplateViewer  : PFPCodeMemo;
      procedure Add;
      procedure Edit;
      procedure Delete;
      procedure Update;
    end;

const CodeTemplates : PCodeTemplateCollection = nil;

function FPTranslateCodeTemplate(const Shortcut: string; ALines: PUnsortedStringCollection): boolean;

procedure InitCodeTemplates;
function  LoadCodeTemplates(var S: TStream): boolean;
function  StoreCodeTemplates(var S: TStream): boolean;
procedure DoneCodeTemplates;

procedure RegisterCodeTemplates;

implementation

uses Commands,Views,MsgBox,App,
     FPConst,FPString;

{$ifndef NOOBJREG}
const
  RCodeTemplate: TStreamRec = (
     ObjType: 14501;
     VmtLink: Ofs(TypeOf(TCodeTemplate)^);
     Load:    @TCodeTemplate.Load;
     Store:   @TCodeTemplate.Store
  );
  RCodeTemplateCollection: TStreamRec = (
     ObjType: 14502;
     VmtLink: Ofs(TypeOf(TCodeTemplateCollection)^);
     Load:    @TCodeTemplateCollection.Load;
     Store:   @TCodeTemplateCollection.Store
  );
{$endif}

constructor TCodeTemplate.Init(const AShortCut: string; AText: PUnsortedStringCollection);
procedure CopyIt(P: PString); {$ifndef FPC}far;{$endif}
begin
  Text^.Insert(NewStr(GetStr(P)));
end;
begin
  inherited Init;
  ShortCut:=NewStr(AShortCut);
  SetText(AText);
end;

function TCodeTemplate.GetShortCut: string;
begin
  GetShortCut:=GetStr(ShortCut);
end;

procedure TCodeTemplate.GetText(AList: PUnsortedStringCollection);
procedure CopyIt(P: PString); {$ifndef FPC}far;{$endif}
begin
  AList^.Insert(NewStr(GetStr(P)));
end;
begin
  if Assigned(AList) and Assigned(Text) then
    Text^.ForEach(@CopyIt);
end;

procedure TCodeTemplate.SetShortCut(const AShortCut: string);
begin
  if Assigned(ShortCut) then DisposeStr(ShortCut);
  ShortCut:=NewStr(AShortCut);
end;

procedure TCodeTemplate.SetText(AList: PUnsortedStringCollection);
begin
  if Assigned(Text) then Dispose(Text, Done);
  New(Text, CreateFrom(AList));
end;

procedure TCodeTemplate.GetParams(var AShortCut: string; Lines: PUnsortedStringCollection);
begin
  AShortCut:=GetShortCut;
  GetText(Lines);
end;

procedure TCodeTemplate.SetParams(const AShortCut: string; Lines: PUnsortedStringCollection);
begin
  SetShortCut(AShortCut);
  SetText(Lines);
end;

constructor TCodeTemplate.Load(var S: TStream);
begin
  ShortCut:=S.ReadStr;
  New(Text, Load(S));
end;

procedure TCodeTemplate.Store(var S: TStream);
begin
  S.WriteStr(ShortCut);
  Text^.Store(S);
end;

destructor TCodeTemplate.Done;
begin
  if Assigned(ShortCut) then DisposeStr(ShortCut); ShortCut:=nil;
  if Assigned(Text) then Dispose(Text, Done); Text:=nil;
  inherited Done;
end;

function TCodeTemplateCollection.Compare(Key1, Key2: Pointer): sw_Integer;
var K1: PCodeTemplate absolute Key1;
    K2: PCodeTemplate absolute Key2;
    R: Sw_integer;
    S1,S2: string;
begin
  S1:=UpCaseStr(K1^.GetShortCut);
  S2:=UpCaseStr(K2^.GetShortCut);
  if S1<S2 then R:=-1 else
  if S1>S2 then R:=1 else
  R:=0;
  Compare:=R;
end;

function TCodeTemplateCollection.SearchByShortCut(const ShortCut: string): PCodeTemplate;
var T: TCodeTemplate;
    Index: sw_integer;
    P: PCodeTemplate;
begin
  T.Init(ShortCut,nil);
  if Search(@T,Index)=false then P:=nil else
    P:=At(Index);
  T.Done;
  SearchByShortCut:=P;
end;

function FPTranslateCodeTemplate(const Shortcut: string; ALines: PUnsortedStringCollection): boolean;
var OK: boolean;
    P: PCodeTemplate;
begin
  OK:=Assigned(CodeTemplates);
  if OK then
  begin
    P:=CodeTemplates^.SearchByShortCut(ShortCut);
    OK:=Assigned(P);
    if OK then
      P^.GetText(ALines);
  end;
  FPTranslateCodeTemplate:=OK;
end;

procedure InitCodeTemplates;
begin
  if Assigned(CodeTemplates) then Exit;

  New(CodeTemplates, Init(10,10));
end;

function LoadCodeTemplates(var S: TStream): boolean;
var C: PCodeTemplateCollection;
    OK: boolean;
begin
  New(C, Load(S));
  OK:=Assigned(C) and (S.Status=stOk);
  if OK then
    begin
      if Assigned(CodeTemplates) then Dispose(CodeTemplates, Done);
      CodeTemplates:=C;
    end
  else
    if Assigned(C) then
      Dispose(C, Done);
  LoadCodeTemplates:=OK;
end;

function StoreCodeTemplates(var S: TStream): boolean;
var OK: boolean;
begin
  OK:=Assigned(CodeTemplates);
  if OK then
  begin
    CodeTemplates^.Store(S);
    OK:=OK and (S.Status=stOK);
  end;
  StoreCodeTemplates:=OK;
end;

procedure DoneCodeTemplates;
begin
  if Assigned(CodeTemplates) then Dispose(CodeTemplates, Done);
  CodeTemplates:=nil;
end;

function TCodeTemplateListBox.GetText(Item,MaxLen: Sw_Integer): String;
var P: PCodeTemplate;
begin
  P:=List^.At(Item);
  GetText:=P^.GetShortCut;
end;

constructor TCodeTemplateDialog.Init(const ATitle: string; ATemplate: PCodeTemplate);
var R,R2,R3: TRect;
    Items: PSItem;
    I,KeyCount: sw_integer;
begin
  R.Assign(0,0,52,15);
  inherited Init(R,ATitle);
  Template:=ATemplate;

  GetExtent(R); R.Grow(-3,-2); R3.Copy(R);
  Inc(R.A.Y); R.B.Y:=R.A.Y+1; R.B.X:=R.A.X+46;
  New(ShortCutIL, Init(R, 128)); Insert(ShortcutIL);
  R2.Copy(R); R2.Move(-1,-1); Insert(New(PLabel, Init(R2, '~S~hortcut', ShortcutIL)));
  R.Move(0,3); R.B.Y:=R.A.Y+8;
  New(CodeMemo, Init(R, nil,nil,nil,4096)); Insert(CodeMemo);
  R2.Copy(R); R2.Move(-1,-1); R2.B.Y:=R2.A.Y+1; Insert(New(PLabel, Init(R2, '~T~emplate content', CodeMemo)));

  InsertButtons(@Self);

  ShortcutIL^.Select;
end;

function TCodeTemplateDialog.Execute: Word;
var R: word;
    S: string;
    L: PUnsortedStringCollection;
    W: word;
begin
  New(L, Init(10,10));
  S:=Template^.GetShortCut;
  Template^.GetText(L);
  ShortcutIL^.SetData(S);
  CodeMemo^.SetContent(L);
  R:=inherited Execute;
  if R=cmOK then
  begin
    L^.FreeAll;
    ShortcutIL^.GetData(S);
    CodeMemo^.GetContent(L);
    Template^.SetShortcut(S);
    Template^.SetText(L);
  end;
  Execute:=R;
end;

constructor TCodeTemplatesDialog.Init;
var R,R2,R3: TRect;
    SB: PScrollBar;
begin
  R.Assign(0,0,46,20);
  inherited Init(R,'CodeTemplates');

  GetExtent(R); R.Grow(-3,-2); Inc(R.A.Y); R.B.Y:=R.A.Y+10;
  R3.Copy(R); Dec(R.B.X,12);
  R2.Copy(R); R2.Move(1,0); R2.A.X:=R2.B.X-1;
  New(SB, Init(R2)); Insert(SB);
  New(CodeTemplatesLB, Init(R,1,SB));
  Insert(CodeTemplatesLB);
  R2.Copy(R); R2.Move(0,-1); R2.B.Y:=R2.A.Y+1; Dec(R2.A.X);
  Insert(New(PLabel, Init(R2, '~T~emplates', CodeTemplatesLB)));

  GetExtent(R); R.Grow(-2,-2); Inc(R.A.Y,12);
  R2.Copy(R); R2.Move(1,0); R2.A.X:=R2.B.X-1;
  New(SB, Init(R2)); Insert(SB);
  New(TemplateViewer, Init(R,nil,SB,nil,4096));
  with TemplateViewer^ do
  begin
    IsReadOnly:=true;
    AlwaysShowScrollBars:=true;
  end;
  Insert(TemplateViewer);

  R.Copy(R3); R.A.X:=R.B.X-10; R.B.Y:=R.A.Y+2;
  Insert(New(PButton, Init(R, 'O~K~', cmOK, bfNormal)));
  R.Move(0,2);
  Insert(New(PButton, Init(R, '~E~dit', cmEditItem, bfDefault)));
  R.Move(0,2);
  Insert(New(PButton, Init(R, '~N~ew', cmAddItem, bfNormal)));
  R.Move(0,2);
  Insert(New(PButton, Init(R, '~D~elete', cmDeleteItem, bfNormal)));
  R.Move(0,2);
  Insert(New(PButton, Init(R, 'Cancel', cmCancel, bfNormal)));
  SelectNext(false);
end;

procedure TCodeTemplatesDialog.Update;
var C: PUnsortedStringCollection;
begin
  if CodeTemplatesLB^.Range=0 then C:=nil else
    C:=PCodeTemplate(CodeTemplatesLB^.GetFocusedItem)^.Text;
  TemplateViewer^.SetContent(C);
  ReDraw;
end;

procedure TCodeTemplatesDialog.HandleEvent(var Event: TEvent);
var DontClear: boolean;
begin
  case Event.What of
    evKeyDown :
      begin
        DontClear:=false;
        case Event.KeyCode of
          kbIns  :
            Message(@Self,evCommand,cmAddItem,nil);
          kbDel  :
            Message(@Self,evCommand,cmDeleteItem,nil);
        else DontClear:=true;
        end;
        if DontClear=false then ClearEvent(Event);
      end;
    evBroadcast :
      case Event.Command of
        cmListItemSelected :
          if Event.InfoPtr=pointer(CodeTemplatesLB) then
            Message(@Self,evCommand,cmEditItem,nil);
        cmListFocusChanged :
          if Event.InfoPtr=pointer(CodeTemplatesLB) then
            Message(@Self,evBroadcast,cmUpdate,nil);
        cmUpdate :
          Update;
      end;
    evCommand :
      begin
        DontClear:=false;
        case Event.Command of
          cmAddItem    : Add;
          cmDeleteItem : Delete;
          cmEditItem   : Edit;
        else DontClear:=true;
        end;
        if DontClear=false then ClearEvent(Event);
      end;
  end;
  inherited HandleEvent(Event);
end;

function TCodeTemplatesDialog.Execute: Word;
var R: word;
    P: PCodeTemplate;
    C: PCodeTemplateCollection;
    L: PUnsortedStringCollection;
    I: integer;
    S1,S2,S3: string;
    W: word;
begin
  New(C, Init(10,20));
  if Assigned(CodeTemplates) then
  for I:=0 to CodeTemplates^.Count-1 do
    begin
      P:=CodeTemplates^.At(I);
      New(L, Init(10,50));
      P^.GetText(L);
      C^.Insert(New(PCodeTemplate, Init(P^.GetShortCut,L)));
      Dispose(L, Done);
    end;
  CodeTemplatesLB^.NewList(C);
  Update;
  R:=inherited Execute;
  if R=cmOK then
    begin
      if Assigned(CodeTemplates) then Dispose(CodeTemplates, Done);
      CodeTemplates:=C;
    end
  else
    Dispose(C, Done);
  Execute:=R;
end;

procedure TCodeTemplatesDialog.Add;
var P,P2: PCodeTemplate;
    IC: boolean;
    S: string;
    L: PUnsortedStringCollection;
    I: sw_integer;
    W: word;
    Cmd: word;
    CanExit: boolean;
begin
  New(L, Init(10,10));
  IC:=CodeTemplatesLB^.Range=0;
  if IC=false then
    begin
      P:=CodeTemplatesLB^.List^.At(CodeTemplatesLB^.Focused);
      P^.GetParams(S,L);
    end
  else
    begin
      S:='';
    end;
  New(P, Init(S,L));
  repeat
    Cmd:=Application^.ExecuteDialog(New(PCodeTemplateDialog, Init('New template',P)), nil);
    CanExit:=(Cmd<>cmOK);
    if CanExit=false then
      begin
        P2:=PCodeTemplateCollection(CodeTemplatesLB^.List)^.SearchByShortCut(P^.GetShortCut);
        CanExit:=(Assigned(P2)=false);
        if CanExit=false then
          ErrorBox('A template named "'+P^.GetShortCut+'" is already in the list',nil);
      end;
  until CanExit;
  if Cmd=cmOK then
    begin
      CodeTemplatesLB^.List^.Insert(P);
      CodeTemplatesLB^.SetRange(CodeTemplatesLB^.List^.Count);
      CodeTemplatesLB^.SetFocusedItem(P);
      Update;
    end
  else
    Dispose(P, Done);
  Dispose(L, Done);
end;

procedure TCodeTemplatesDialog.Edit;
var P,O,P2: PCodeTemplate;
    I: sw_integer;
    S: string;
    L: PUnsortedStringCollection;
    Cmd: word;
    CanExit: boolean;
begin
  if CodeTemplatesLB^.Range=0 then Exit;
  New(L, Init(10,10));
  I:=CodeTemplatesLB^.Focused;
  O:=CodeTemplatesLB^.List^.At(I);
  O^.GetParams(S,L);
  P:=New(PCodeTemplate, Init(S, L));
  repeat
    Cmd:=Application^.ExecuteDialog(New(PCodeTemplateDialog, Init('Modify template',P)), nil);
    CanExit:=(Cmd<>cmOK);
    if CanExit=false then
      begin
        P2:=PCodeTemplateCollection(CodeTemplatesLB^.List)^.SearchByShortCut(P^.GetShortCut);
        CanExit:=(Assigned(P2)=false) or (CodeTemplatesLB^.List^.IndexOf(P2)=I);
        if CanExit=false then
          ErrorBox('A template named "'+P^.GetShortCut+'" is already in the list',nil);
      end;
  until CanExit;
  if Cmd=cmOK then
    begin
      with CodeTemplatesLB^ do
      begin
        List^.AtFree(I); O:=nil;
        List^.Insert(P);
        SetFocusedItem(P);
      end;
      Update;
    end;
  Dispose(L, Done);
end;

procedure TCodeTemplatesDialog.Delete;
begin
  if CodeTemplatesLB^.Range=0 then Exit;
  CodeTemplatesLB^.List^.AtFree(CodeTemplatesLB^.Focused);
  CodeTemplatesLB^.SetRange(CodeTemplatesLB^.List^.Count);
  Update;
end;


procedure RegisterCodeTemplates;
begin
{$ifndef NOOBJREG}
  RegisterType(RCodeTemplate);
  RegisterType(RCodeTemplateCollection);
{$endif}
end;

END.