|
|
ID: 25928, The Composite
The composite pattern to group objects to be treated in the same way as a single instance of an object
|
| Download
| Details
|
|---|
|
|
FTP
download also available
|
|
|
CDN Login Required to Download. (You will be redirected to the login page if you click on the Download Link)
|
|
To download this, you must have registered:
|
For Delphi, Version 5.0
to 11.0
188 downloads
Copyright: No significant restrictions
Size: 842 bytes
Updated on Tue, 26 Aug 2008 11:13:35 GMT
Originally uploaded on Tue, 26 Aug 2008 10:22:55 GMT
SHA1 Hash: 348F53BA662D9AE38E41C534D721535E20BF14FF
MD5 Hash: D144CB81584625E98020B3D51C681D2E
|
Explore the files in this upload
File Exploration is Disabled
We're sorry, but errors in the uploaded zip file prevent it from being explored.
The error generated by the Zip attachment is:
You may still be able to repair the zip file contents if you download the entire zip locally. You may also want to ask the author to repost the attachment.
|
| Description
|
|---|
The composite pattern to group objects to be treated in the same way as a single instance of an object.
Test it with thos code:
unit Main;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ComCtrls,
Composite, Composite2, Iteratoren;
type
TForm1 = class(TForm)
TreeView1: TTreeView;
Button1: TButton;
TreeView2: TTreeView;
Button2: TButton;
Button3: TButton;
procedure Button1Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
private
Wurzel : TComponent;
procedure CreateWurzel;
procedure FillTree;
public
{ Public-Deklarationen }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
begin
FillTree;
end;
procedure TForm1.CreateWurzel;
var
E1_Komponente : TComponent;
E2_Komponente : TComponent;
E3_Komponente : TComponent;
E4_Komponente : TComponent;
begin
Wurzel := TComposite.Create('Wurzel', 'Die Wurzel');
E1_Komponente := TComposite.Create('E1', '#1 von Ebene 1');
E2_Komponente := TComposite.Create('E2', '#1 von Ebene 2');
E3_Komponente := TComposite.Create('E3', '#1 von Ebene 3');
Wurzel.Add(E1_Komponente);
E1_Komponente.Add(E2_Komponente);
E2_Komponente.Add(E3_Komponente);
E2_Komponente.Add(TLeaf.Create('B1','Blatt1 von E2'));
E2_Komponente.Add(TLeaf.Create('B2','Blatt2 von E2'));
E2_Komponente.Add(TLeaf.Create('B3','Blatt3 von E2'));
E3_Komponente.Add(TLeaf.Create('B1','Blatt1 von E3'));
E4_Komponente := TComposite.Create('E4', 'E4: Noch jemand da');
Wurzel.Add(E4_Komponente);
E4_Komponente.Add(TLeaf.Create('B1','Blatt1 von E4'));
end;
procedure TForm1.FillTree;
procedure Recur(iActNode: TTreeNode; iKomponente:TComponent);
var
ActNode: TTreeNode;
i : integer;
begin
if iKomponente <> nil then
for i := 0 to iKomponente.GetCount - 1 do
begin
ActNode := TreeView1.Items.AddChildObject(iActNode, iKomponente.GetChild(i).GetName, iKomponente.GetChild(i));
if iKomponente.GetChild(i).GetCount <> 0 then
Recur(ActNode,iKomponente.GetChild(i));
end;
end;
begin
TreeView1.Items.Clear;
Recur(nil, Wurzel);
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
CreateWurzel;
end;
end.
|
|
 Server Response from: ETNACDC03
|
Connect with Us