Changeset 131 for trunk/Packages/Common/UListViewSort.pas

Timestamp:

Mar 18, 2022, 1:37:03 PM (2 years ago)

Author:

chronos

Message:

• Modified: Update Common package.

File:

• trunk/Packages/Common/UListViewSort.pas (modified) (10 diffs)

trunk/Packages/Common/UListViewSort.pas

@@ -1 +1 @@
 unit UListViewSort;
 
-// Date: 2010-11-03
+// Date: 2019-05-17
 
 {$mode delphi}
@@ -8 +8 @@
 
 uses
-  {$IFDEF Windows}Windows, CommCtrl, {$ENDIF}Classes, Graphics, ComCtrls, SysUtils,
-  Controls, DateUtils, Dialogs, SpecializedList, Forms, Grids, StdCtrls, ExtCtrls,
-  LclIntf, LMessages, LclType, LResources;
+  {$IFDEF Windows}Windows, CommCtrl, LMessages, {$ENDIF}Classes, Graphics, ComCtrls, SysUtils,
+  Controls, DateUtils, Dialogs, fgl, Forms, Grids, StdCtrls, ExtCtrls,
+  LclIntf, LclType, LResources;
 
 type
@@ -52 +52 @@
     {$ENDIF}
   public
-    List: TListObject;
-    Source: TListObject;
+    List: TFPGObjectList<TObject>;
+    Source: TFPGObjectList<TObject>;
     constructor Create(AOwner: TComponent); override;
     destructor Destroy; override;
@@ -81 +81 @@
     FOnChange: TNotifyEvent;
     FStringGrid1: TStringGrid;
+    procedure DoOnChange;
     procedure GridDoOnKeyUp(Sender: TObject; var Key: Word; Shift: TShiftState);
     procedure GridDoOnResize(Sender: TObject);
@@ -90 +91 @@
     function TextEnteredColumn(Index: Integer): Boolean;
     function GetColValue(Index: Integer): string;
+    procedure Reset;
     property StringGrid: TStringGrid read FStringGrid1 write FStringGrid1;
   published
@@ -98 +100 @@
   end;
 
+  { TListViewEx }
+
+  TListViewEx = class(TWinControl)
+  private
+    FFilter: TListViewFilter;
+    FListView: TListView;
+    FListViewSort: TListViewSort;
+    procedure ResizeHanlder;
+  public
+    constructor Create(TheOwner: TComponent); override;
+    destructor Destroy; override;
+  published
+    property ListView: TListView read FListView write FListView;
+    property ListViewSort: TListViewSort read FListViewSort write FListViewSort;
+    property Filter: TListViewFilter read FFilter write FFilter;
+    property Visible;
+  end;
+
 procedure Register;
 
@@ -105 +125 @@
 procedure Register;
 begin
-  RegisterComponents('Common', [TListViewSort, TListViewFilter]);
+  RegisterComponents('Common', [TListViewSort, TListViewFilter, TListViewEx]);
+end;
+
+{ TListViewEx }
+
+procedure TListViewEx.ResizeHanlder;
+begin
+end;
+
+constructor TListViewEx.Create(TheOwner: TComponent);
+begin
+  inherited Create(TheOwner);
+  Filter := TListViewFilter.Create(Self);
+  Filter.Parent := Self;
+  Filter.Align := alBottom;
+  ListView := TListView.Create(Self);
+  ListView.Parent := Self;
+  ListView.Align := alClient;
+  ListViewSort := TListViewSort.Create(Self);
+  ListViewSort.ListView := ListView;
+end;
+
+destructor TListViewEx.Destroy;
+begin
+  inherited Destroy;
 end;
 
 { TListViewFilter }
+
+procedure TListViewFilter.DoOnChange;
+begin
+  if Assigned(FOnChange) then FOnChange(Self);
+end;
 
 procedure TListViewFilter.GridDoOnKeyUp(Sender: TObject; var Key: Word;
   Shift: TShiftState);
 begin
-  if Assigned(FOnChange) then
-    FOnChange(Self);
+  DoOnChange;
 end;
 
@@ -187 +235 @@
 end;
 
+procedure TListViewFilter.Reset;
+var
+  I: Integer;
+begin
+  with StringGrid do
+  for I := 0 to ColCount - 1 do
+    Cells[I, 0] := '';
+  DoOnChange;
+end;
+
 { TListViewSort }
 
@@ -277 +335 @@
 end;
 
+var
+  ListViewSortCompare: TCompareEvent;
+
+function ListViewCompare(const Item1, Item2: TObject): Integer;
+begin
+  Result := ListViewSortCompare(Item1, Item2);
+end;
+
 procedure TListViewSort.Sort(Compare: TCompareEvent);
 begin
+  // TODO: Because TFLGObjectList compare handler is not class method,
+  // it is necessary to use simple function compare handler with local variable
+  ListViewSortCompare := Compare;
   if (List.Count > 0) then
-    List.Sort(Compare);
+    List.Sort(ListViewCompare);
 end;
 
@@ -343 +412 @@
 begin
   inherited;
-  List := TListObject.Create;
-  List.OwnsObjects := False;
+  List := TFPGObjectList<TObject>.Create;
+  List.FreeObjects := False;
 end;