mirror of
https://gitlab.com/freepascal.org/lazarus/lazarus.git
synced 2025-05-25 05:42:43 +02:00
435 lines
13 KiB
PHP
435 lines
13 KiB
PHP
{******************************************************************************
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gtklistsl.inc
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TGtkListStringList and TGtkCListStringList
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******************************************************************************
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*****************************************************************************
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* *
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* This file is part of the Lazarus Component Library (LCL) *
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* *
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* See the file COPYING.LCL, included in this distribution, *
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* for details about the copyright. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
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* *
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*****************************************************************************
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}
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{$IFOPT H+}
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{$DEFINE H_PLUS}
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{$ELSE}
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{$H+}
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{$UNDEF H_PLUS}
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{$ENDIF}
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{*************************************************************}
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{ Default compare function }
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{*************************************************************}
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function DefaultCompareFunc(a, b : gpointer) : gint; cdecl;
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var AStr, BStr : PChar;
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begin
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gtk_label_get(PGtkLabel(PGtkBin(a)^.child), @AStr);
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gtk_label_get(PGtkLabel(PGtkBin(b)^.child), @BStr);
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//writeln('DefaultCompareFunc "',AStr,'" "',BStr,'"');
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Result:= strcomp(AStr, BStr);
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end;
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{*************************************************************}
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{ TGtkListStringList methods }
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{*************************************************************}
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{------------------------------------------------------------------------------
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Method: TGtkListStringList.Create
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Params:
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Returns:
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------------------------------------------------------------------------------}
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constructor TGtkListStringList.Create(List : PGtkList);
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begin
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inherited Create;
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if List = nil then raise Exception.Create(
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'TGtkListStringList.Create Unspecified list widget');
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FGtkList:= List;
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end;
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{------------------------------------------------------------------------------
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Method: TGtkListStringList.SetSorted
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Params:
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Returns:
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------------------------------------------------------------------------------}
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procedure TGtkListStringList.SetSorted(Val : boolean);
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begin
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if Val <> FSorted then begin
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FSorted:= Val;
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if FSorted then Sort;
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end;
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end;
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{------------------------------------------------------------------------------
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Method: TGtkListStringList.Sort
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Params:
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Returns:
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------------------------------------------------------------------------------}
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procedure TGtkListStringList.Sort;
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var sl: TStringList;
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begin
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// sort internally (sorting in the widget would be slow and unpretty ;)
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sl:=TStringList.Create;
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sl.Assign(Self);
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sl.Sort; // currently this is quicksort ->
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// Disadvantages: - worst case on sorted list
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// - not keeping order
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// ToDo: replace by mergesort and add customsort
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Assign(sl);
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sl.Free;
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end;
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{------------------------------------------------------------------------------
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Method: TGtkListStringList.Assign
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Params:
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Returns:
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------------------------------------------------------------------------------}
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procedure TGtkListStringList.Assign(Source : TPersistent);
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var Counter : integer;
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begin
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if (Source=Self) or (Source=nil)
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or ((Source is TGtkListStringList)
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and (TGtkListStringList(Source).FGtkList=FGtkList)) then exit;
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//writeln('[TGtkListStringList.Assign] A ',Source.Classname,' Self=',HexStr(Cardinal(Self),8),' Source=',HexStr(Cardinal(Source),8));
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{ Do not call inherited Assign as it does things we do not want to happen }
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if Source is TStrings then begin
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Clear;
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for Counter:= TStrings(Source).Count - 1 downto 0 do begin
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Insert(0, TStrings(Source)[Counter]);
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end;
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end else inherited Assign(Source);
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//writeln('[TGtkListStringList.Assign] END ',Source.Classname);
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end;
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{------------------------------------------------------------------------------
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Method: TGtkListStringList.Get
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Params:
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Returns:
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------------------------------------------------------------------------------}
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function TGtkListStringList.Get(Index : integer) : string;
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var Item : PChar;
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ALabel : PGtkWidget;
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ListItem : PGtkListItem;
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begin
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//writeln('[TGtkListStringList.Get] Index=',Index,' Count=',Count);
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if (Index < 0) or (Index >= Count) then raise Exception.Create('Out of bounds.')
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else begin
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if FGtkList=nil then begin
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Result:='';
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exit;
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end;
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ListItem:= g_list_nth_data(FGtkList^.children, Index);
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ALabel:= PGtkBin(ListItem)^.child;
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if ALabel = nil then
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Result:= ''
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else begin
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Item:=nil;
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gtk_label_get (PGtkLabel(ALabel), @Item);
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Result:= StrPas(Item);
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end;
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end;
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end;
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{------------------------------------------------------------------------------
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Method: TGtkListStringList.GetCount
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Params:
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Returns:
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------------------------------------------------------------------------------}
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function TGtkListStringList.GetCount: integer;
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begin
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if FGtkList^.children = nil then
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Result:= 0
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else
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Result:= g_list_length(FGtkList^.children);
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end;
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{------------------------------------------------------------------------------
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Method: TGtkListStringList.Clear
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Params:
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Returns:
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------------------------------------------------------------------------------}
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procedure TGtkListStringList.Clear;
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begin
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gtk_list_clear_items(FGtkList, 0, Count);
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end;
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{------------------------------------------------------------------------------
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Method: TGtkListStringList.Delete
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Params:
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Returns:
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------------------------------------------------------------------------------}
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procedure TGtkListStringList.Delete(Index : integer);
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begin
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gtk_list_clear_items(FGtkList, Index, Index + 1);
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end;
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{------------------------------------------------------------------------------
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Method: TGtkListStringList.Insert
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Params:
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Returns:
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------------------------------------------------------------------------------}
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procedure TGtkListStringList.Insert(Index : integer; const S : string);
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var li : PGtkWidget;
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l, m, r, cmp: integer;
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begin
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//writeln('[TGtkListStringList.Insert] Index=',Index,' Count=',Count,' ',S);
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if FSorted then begin
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l:=0;
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r:=Count-1;
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m:=l;
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while (l<=r) do begin
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m:=(l+r) shr 1;
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cmp:=AnsiCompareText(S,Strings[m]);
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if cmp<0 then
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r:=m-1
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else if cmp>0 then
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l:=m+1
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else
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break;
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end;
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if (m<Count) and (AnsiCompareText(S,Strings[m])>0) then
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inc(m);
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Index:=m;
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end;
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if (Index < 0) or (Index > Count) then
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raise Exception.Create('TGtkListStringList.Insert: Index '+IntToStr(Index)
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+' out of bounds. Count='+IntToStr(Count));
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li:=gtk_list_item_new_with_label(PChar(S));
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gtk_widget_show(li);
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gtk_list_insert_items(FGtkList, g_list_append(nil, li), Index);
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//writeln('[TGtkListStringList.Insert] END Index=',Index,' Count=',Count,' ',S,',',Count);
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end;
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{*************************************************************}
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{ TGtkCListStringList methods }
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{*************************************************************}
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{------------------------------------------------------------------------------
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Method: TGtkCListStringList.Create
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Params:
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Returns:
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------------------------------------------------------------------------------}
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constructor TGtkCListStringList.Create(List : PGtkCList);
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begin
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inherited Create;
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if List = nil then raise Exception.Create('Unspecified list widget');
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FGtkCList:= List;
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end;
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{------------------------------------------------------------------------------
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Method: TGtkCListStringList.SetSorted
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Params:
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Returns:
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------------------------------------------------------------------------------}
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procedure TGtkCListStringList.SetSorted(Val : boolean);
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begin
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if Val <> FSorted then begin
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FSorted:= Val;
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gtk_clist_set_auto_sort(FGtkCList, Val);
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if Val then Sort;
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end;
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end;
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{------------------------------------------------------------------------------
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Method: TGtkCListStringList.Sort
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Params:
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Returns:
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------------------------------------------------------------------------------}
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procedure TGtkCListStringList.Sort;
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begin
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gtk_clist_sort(FGtkCList);
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end;
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{------------------------------------------------------------------------------
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Method: TGtkCListStringList.Assign
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Params:
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Returns:
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------------------------------------------------------------------------------}
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procedure TGtkCListStringList.Assign(Source : TPersistent);
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var
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Counter : integer;
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begin
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{ Do not call inherited Assign as it does things we do not want to happen }
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if Source is TStrings
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then begin
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Clear;
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for Counter:= TStrings(Source).Count - 1 downto 0 do
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InsertObject(0, TStrings(Source)[Counter], TStrings(Source).Objects[Counter]);
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end
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else inherited Assign(Source);
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end;
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{------------------------------------------------------------------------------
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Method: TGtkCListStringList.Clear
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Params:
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Returns:
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------------------------------------------------------------------------------}
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procedure TGtkCListStringList.Clear;
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begin
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gtk_clist_clear(FGtkCList);
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end;
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{------------------------------------------------------------------------------
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Method: TGtkCListStringList.Delete
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Params:
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Returns:
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------------------------------------------------------------------------------}
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procedure TGtkCListStringList.Delete(Index : integer);
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begin
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gtk_clist_remove(FGtkCList, Index);
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end;
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{------------------------------------------------------------------------------
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Method: TGtkCListStringList.Get
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Params:
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Returns:
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------------------------------------------------------------------------------}
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function TGtkCListStringList.Get(Index : integer) : string;
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var
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Item : PChar;
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begin
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if (Index < 0) or (Index >= Count)
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then raise Exception.Create('Out of bounds.')
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else begin
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Item := nil;
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gtk_clist_get_text(FGtkCList, Index, 0, @Item);
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Result:= StrPas(Item);
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end;
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end;
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{------------------------------------------------------------------------------
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Method: TGtkCListStringList.GetCount
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Params:
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Returns:
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------------------------------------------------------------------------------}
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function TGtkCListStringList.GetCount : integer;
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begin
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Result:= FGtkCList^.rows;
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end;
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{------------------------------------------------------------------------------
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Method: TGtkCListStringList.GetObject
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Params:
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Returns:
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------------------------------------------------------------------------------}
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function TGtkCListStringList.GetObject(Index: Integer): TObject;
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begin
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pointer(Result) := gtk_clist_get_row_data(FGtkCList, Index);
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end;
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{------------------------------------------------------------------------------
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Method: TGtkCListStringList.Insert
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Params:
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Returns:
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------------------------------------------------------------------------------}
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procedure TGtkCListStringList.Insert(Index : integer; const S : string);
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type
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TCSArr = record
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Arr: array[0..15] of PChar;
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Str: array[0..0] of Char;
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end;
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var
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CS: ^TCSArr;
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CSize: integer;
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K: integer;
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begin
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CSize := sizeof(TCSArr)+length(S)+1;
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GetMem(CS, CSize);
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FillChar(CS^, sizeof(TCSArr), 0);
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StrPCopy(CS^.Str, S);
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CS^.Arr[0] := @CS^.Str;
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for K := 1 to 15 do begin
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CS^.Arr[K] := StrScan(CS^.Arr[K-1], #9);
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if Assigned(CS^.Arr[K]) then begin
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CS^.Arr[K][0] := #0;
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inc(integer(CS^.Arr[K]));
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end else
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break;
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end;
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gtk_clist_insert(FGtkCList, Index, PPGChar(CS));
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FreeMem(CS);
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end;
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{------------------------------------------------------------------------------
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Method: TGtkCListStringList.PutObject
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Params:
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Returns:
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------------------------------------------------------------------------------}
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procedure TGtkCListStringList.PutObject(Index: Integer; AObject: TObject);
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begin
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gtk_clist_set_row_data(FGtkCList, Index, AObject);
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end;
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{$IFDEF H_PLUS}
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{$UNDEF H_PLUS}
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{$ELSE}
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{$H-}
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{$ENDIF}
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{ =============================================================================
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$Log$
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Revision 1.5 2002/05/10 06:05:57 lazarus
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MG: changed license to LGPL
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Revision 1.4 2001/11/27 15:06:13 lazarus
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MG: added multi language syntax hilighting
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Revision 1.3 2001/10/31 10:38:26 lazarus
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MG: fixed sorted customlistbox
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Revision 1.2 2001/09/30 08:34:52 lazarus
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MG: fixed mem leaks and fixed range check errors
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Revision 1.1 2000/07/13 10:28:29 michael
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+ Initial import
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Revision 1.2 2000/04/13 21:25:16 lazarus
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MWE:
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~ Added some docu and did some cleanup.
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Hans-Joachim Ott <hjott@compuserve.com>:
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* TMemo.Lines works now.
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+ TMemo has now a property Scrollbar.
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= TControl.GetTextBuf revised :-)
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+ Implementation for CListBox columns added
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* Bug in TGtkCListStringList.Assign corrected.
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Revision 1.1 2000/03/30 22:51:42 lazarus
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MWE:
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Moved from ../../lcl
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Revision 1.3 2000/03/04 00:05:21 lazarus
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MWE: added changes from Hans (HJO)
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}
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