current/FileClasses/_Extensions.pas

unit _Extensions;

interface

uses
  _FileTypes, _TreeElement;

type
  TExtension = class(TTreeElement)
    protected
      function GetChildCount: Integer; override;
      function GetChild(ID: Integer): TTreeElement; override;
      function GetCaption: String; override;
      function GetType: String; override;
    private
      FExt: String;
      FFiles: array of Integer;
    public
      constructor Create(ConnectionID: Integer; Ext: String); virtual;
      procedure InitList;
      property Ext: String read FExt;
  end;

  TExtensions = class(TTreeElement)
      function GetChildCount: Integer; override;
      function GetChild(ID: Integer): TTreeElement; override;
      function GetCaption: String; override;
    private
      FExtensions: array of TExtension;
    public
      constructor Create(DataAccess: TObject; ConnectionID: Integer);
      function GetExt(Ext: String): TExtension;
      procedure AddExt(Ext: String);
  end;


implementation

uses
  Classes, StrUtils, SysUtils, ConnectionManager, TypeDefs, DataAccess, _MetaManager;

{ TExtension }

constructor TExtension.Create(ConnectionID: Integer; Ext: String);
begin
  FConnectionID := ConnectionID;
  FExt := Ext;
end;

function TExtension.GetCaption: String;
begin
  Result := FExt + '[' + IntToStr(GetChildCount) + ']';
end;

function TExtension.GetChild(ID: Integer): TTreeElement;
var
  Meta: TMetaManager;
begin
  Meta := ConManager.Connection[FConnectionID].MetaData;
  Meta.InitFile(FFiles[ID]);
  Result := Meta.FileById[FFiles[ID]];
end;

function TExtension.GetChildCount: Integer;
begin
  Result := Length(FFiles);
end;

function TExtension.GetType: String;
begin
  Result := '';
end;

procedure TExtension.InitList;
var
  files: TStrings;
  i: Integer;
  fid: Integer;
  finfo: TFileInfo;
begin
  files := TStringList.Create;
  files := ConManager.Connection[FConnectionID].GetFilesList(FExt, '', False, ST_NameAsc);
  if files.Count > 0 then
  begin
    for i := 0 to files.Count - 1 do
    begin
      fid := StrToInt(MidStr(files.Strings[i], 1, 5));
      finfo := ConManager.Connection[FConnectionID].GetFileInfo(fid);
      if Length(finfo.Name) > 0 then
      begin
        SetLength(FFiles, Length(FFiles) + 1);
        FFiles[High(FFiles)] := fid;
      end;
    end;
  end;
  files.Free;
end;


{ TExtensions }

function TExtensions.GetCaption: String;
begin
  Result := '';
end;

function TExtensions.GetChild(ID: Integer): TTreeElement;
begin
  FExtensions[ID].InitList;
  Result := FExtensions[ID];
end;

function TExtensions.GetChildCount: Integer;
begin
  Result := Length(FExtensions);
end;

constructor TExtensions.Create(DataAccess: TObject; ConnectionID: Integer);
var
  files: TStrings;
  i: Integer;
  fid: Integer;
  finfo: TFileInfo;
begin
  FConnectionID := ConnectionID;
  files := TStringList.Create;
  files := TDataAccess(DataAccess).GetFilesList('', '', False, ST_IDAsc);
  SetLength(FExtensions, 0);
  if files.Count > 0 then
  begin
    for i := 0 to files.Count - 1 do
    begin
      fid := StrToInt(MidStr(files.Strings[i], 1, 5));
      finfo := TDataAccess(DataAccess).GetFileInfo(fid);
      if Length(finfo.Name) > 0 then
        if not Assigned(GetExt(finfo.Extension)) then
          AddExt(finfo.Extension);
    end;
  end;
  files.Free;
end;


function TExtensions.GetExt(Ext: String): TExtension;
var
  i: Integer;
begin
  Result := nil;
  if Length(FExtensions) > 0 then
    for i := 0 to High(FExtensions) do
      if FExtensions[i].Ext = Ext then
      begin
        Result := FExtensions[i];
        Break;
      end;
end;

procedure TExtensions.AddExt(Ext: String);
var
  i: Integer;
begin
  SetLength(FExtensions, Length(FExtensions) + 1);
  for i := High(FExtensions) downto 1 do
  begin
    if FExtensions[i-1].GetCaption < Ext then
    begin
      FExtensions[i] := TExtension.Create(FConnectionID, Ext);
      Break;
    end
    else
      FExtensions[i] := FExtensions[i-1];
  end;
  if i = 0 then
    FExtensions[0] := TExtension.Create(FConnectionID, Ext);
end;


end.
Revision:	241
Committed:	Tue Jul 17 22:27:16 2007 UTC (18 years, 3 months ago) by alloc
Content type:	text/x-pascal
File size:	4202 byte(s)
Log Message:
#	Content
1	unit _Extensions;
2
3	interface
4
5	uses
6	_FileTypes, _TreeElement;
7
8	type
9	TExtension = class(TTreeElement)
10	protected
11	function GetChildCount: Integer; override;
12	function GetChild(ID: Integer): TTreeElement; override;
13	function GetCaption: String; override;
14	function GetType: String; override;
15	private
16	FExt: String;
17	FFiles: array of Integer;
18	public
19	constructor Create(ConnectionID: Integer; Ext: String); virtual;
20	procedure InitList;
21	property Ext: String read FExt;
22	end;
23
24	TExtensions = class(TTreeElement)
25	function GetChildCount: Integer; override;
26	function GetChild(ID: Integer): TTreeElement; override;
27	function GetCaption: String; override;
28	private
29	FExtensions: array of TExtension;
30	public
31	constructor Create(DataAccess: TObject; ConnectionID: Integer);
32	function GetExt(Ext: String): TExtension;
33	procedure AddExt(Ext: String);
34	end;
35
36
37
38	implementation
39
40	uses
41	Classes, StrUtils, SysUtils, ConnectionManager, TypeDefs, DataAccess, _MetaManager;
42
43	{ TExtension }
44
45	constructor TExtension.Create(ConnectionID: Integer; Ext: String);
46	begin
47	FConnectionID := ConnectionID;
48	FExt := Ext;
49	end;
50
51	function TExtension.GetCaption: String;
52	begin
53	Result := FExt + '[' + IntToStr(GetChildCount) + ']';
54	end;
55
56	function TExtension.GetChild(ID: Integer): TTreeElement;
57	var
58	Meta: TMetaManager;
59	begin
60	Meta := ConManager.Connection[FConnectionID].MetaData;
61	Meta.InitFile(FFiles[ID]);
62	Result := Meta.FileById[FFiles[ID]];
63	end;
64
65	function TExtension.GetChildCount: Integer;
66	begin
67	Result := Length(FFiles);
68	end;
69
70	function TExtension.GetType: String;
71	begin
72	Result := '';
73	end;
74
75	procedure TExtension.InitList;
76	var
77	files: TStrings;
78	i: Integer;
79	fid: Integer;
80	finfo: TFileInfo;
81	begin
82	files := TStringList.Create;
83	files := ConManager.Connection[FConnectionID].GetFilesList(FExt, '', False, ST_NameAsc);
84	if files.Count > 0 then
85	begin
86	for i := 0 to files.Count - 1 do
87	begin
88	fid := StrToInt(MidStr(files.Strings[i], 1, 5));
89	finfo := ConManager.Connection[FConnectionID].GetFileInfo(fid);
90	if Length(finfo.Name) > 0 then
91	begin
92	SetLength(FFiles, Length(FFiles) + 1);
93	FFiles[High(FFiles)] := fid;
94	end;
95	end;
96	end;
97	files.Free;
98	end;
99
100
101	{ TExtensions }
102
103	function TExtensions.GetCaption: String;
104	begin
105	Result := '';
106	end;
107
108	function TExtensions.GetChild(ID: Integer): TTreeElement;
109	begin
110	FExtensions[ID].InitList;
111	Result := FExtensions[ID];
112	end;
113
114	function TExtensions.GetChildCount: Integer;
115	begin
116	Result := Length(FExtensions);
117	end;
118
119	constructor TExtensions.Create(DataAccess: TObject; ConnectionID: Integer);
120	var
121	files: TStrings;
122	i: Integer;
123	fid: Integer;
124	finfo: TFileInfo;
125	begin
126	FConnectionID := ConnectionID;
127	files := TStringList.Create;
128	files := TDataAccess(DataAccess).GetFilesList('', '', False, ST_IDAsc);
129	SetLength(FExtensions, 0);
130	if files.Count > 0 then
131	begin
132	for i := 0 to files.Count - 1 do
133	begin
134	fid := StrToInt(MidStr(files.Strings[i], 1, 5));
135	finfo := TDataAccess(DataAccess).GetFileInfo(fid);
136	if Length(finfo.Name) > 0 then
137	if not Assigned(GetExt(finfo.Extension)) then
138	AddExt(finfo.Extension);
139	end;
140	end;
141	files.Free;
142	end;
143
144
145	function TExtensions.GetExt(Ext: String): TExtension;
146	var
147	i: Integer;
148	begin
149	Result := nil;
150	if Length(FExtensions) > 0 then
151	for i := 0 to High(FExtensions) do
152	if FExtensions[i].Ext = Ext then
153	begin
154	Result := FExtensions[i];
155	Break;
156	end;
157	end;
158
159	procedure TExtensions.AddExt(Ext: String);
160	var
161	i: Integer;
162	begin
163	SetLength(FExtensions, Length(FExtensions) + 1);
164	for i := High(FExtensions) downto 1 do
165	begin
166	if FExtensions[i-1].GetCaption < Ext then
167	begin
168	FExtensions[i] := TExtension.Create(FConnectionID, Ext);
169	Break;
170	end
171	else
172	FExtensions[i] := FExtensions[i-1];
173	end;
174	if i = 0 then
175	FExtensions[0] := TExtension.Create(FConnectionID, Ext);
176	end;
177
178
179
180	end.