david
778b05bf9f
- Mustangpeak Common Library - 1.7.0 - EasyListview - 1.7.0 git-svn-id: https://192.168.0.254/svn/Componentes.Terceros.Mustangpeak@2 60b41242-d4b9-2247-b156-4ccd40706241
636 lines
17 KiB
ObjectPascal
636 lines
17 KiB
ObjectPascal
unit EasyCollectionEditor;
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// Version 1.7.0
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//
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// The contents of this file are subject to the Mozilla Public License
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// Version 1.1 (the "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at http://www.mozilla.org/MPL/
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//
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// Alternatively, you may redistribute this library, use and/or modify it under the terms of the
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// GNU Lesser General Public License as published by the Free Software Foundation;
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// either version 2.1 of the License, or (at your option) any later version.
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// You may obtain a copy of the LGPL at http://www.gnu.org/copyleft/.
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//
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// Software distributed under the License is distributed on an "AS IS" basis,
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// WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the
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// specific language governing rights and limitations under the License.
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//
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// The initial developer of this code is Jim Kueneman <jimdk@mindspring.com>
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// Special thanks to the following in no particular order for their help/support/code
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// Danijel Malik, Robert Lee, Werner Lehmann, Alexey Torgashin, Milan Vandrovec
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//
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//----------------------------------------------------------------------------
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interface
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{$I Compilers.inc}
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uses
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Windows,
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Messages,
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SysUtils,
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Classes,
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Controls,
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Graphics,
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{$IFDEF COMPILER_6_UP}
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DesignIntf,
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DesignEditors,
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DesignWindows,
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TreeIntf,
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VCLEditors,
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{$ELSE}
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DsgnIntf,
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DsgnWnds,
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{$ENDIF}
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{$IFDEF COMPILER_5}
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ParentageSupport, // Sprig support in DsnIDE5.dpk What about D4?
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{$ENDIF}
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TypInfo,
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Forms,
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Dialogs,
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StdCtrls,
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ComCtrls,
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EasyListview,
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ExtCtrls,
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CommCtrl,
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ImgList,
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ToolWin,
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ActnList, Menus;
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type
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TFormEasyCollectionEditor = class(TDesignWindow)
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ListView1: TListView;
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ToolBar1: TToolBar;
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ToolButton1: TToolButton;
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ToolButton2: TToolButton;
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ToolButton3: TToolButton;
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ToolButton4: TToolButton;
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ImageList1: TImageList;
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ToolButton5: TToolButton;
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ActionList1: TActionList;
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ActionNewItem: TAction;
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ActionDeleteItem: TAction;
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ActionUpItem: TAction;
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ActionDownItem: TAction;
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ToolButton6: TToolButton;
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PopupMenu1: TPopupMenu;
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Add1: TMenuItem;
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Delete1: TMenuItem;
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MoveUp1: TMenuItem;
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MoveDown1: TMenuItem;
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N1: TMenuItem;
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StatusBar1: TStatusBar;
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procedure FormClose(Sender: TObject; var Action: TCloseAction);
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procedure ActionNewItemExecute(Sender: TObject);
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procedure ActionDeleteItemExecute(Sender: TObject);
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procedure ActionUpItemExecute(Sender: TObject);
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procedure ActionDownItemExecute(Sender: TObject);
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procedure ListView1Resize(Sender: TObject);
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procedure ListView1Change(Sender: TObject; Item: TListItem; Change: TItemChange);
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procedure ListView1KeyDown(Sender: TObject; var Key: Word;
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Shift: TShiftState);
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procedure ListView1KeyPress(Sender: TObject; var Key: Char);
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private
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{ Private declarations }
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FCollection: TEasyCollection;
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FListview: TCustomEasyListview;
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FRebuilding: Boolean;
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protected
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procedure DoShow; override;
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procedure Rebuild;
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procedure Refresh;
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procedure HandleDelete;
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{$IFNDEF COMPILER_6_UP}
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function UniqueName(Component: TComponent): string; override;
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{$ENDIF}
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public
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{ Public declarations }
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{$IFDEF COMPILER_6_UP}
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procedure DesignerClosed(const Designer: IDesigner; AGoingDormant: Boolean); override;
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procedure ItemDeleted(const ADesigner: IDesigner; Item: TPersistent); override;
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procedure ItemsModified(const Designer: IDesigner); override;
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{$ENDIF}
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{$IFNDEF COMPILER_6_UP}
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procedure ComponentDeleted(Component: IPersistent); override;
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procedure FormClosed(AForm: TCustomForm); override;
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procedure FormModified; override;
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{$ENDIF}
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property Collection: TEasyCollection read FCollection write FCollection;
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property Listview: TCustomEasyListview read FListview write FListview;
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property Rebuilding: Boolean read FRebuilding write FRebuilding;
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end;
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PFormRegRec = ^TFormRegRec;
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TFormRegRec = record
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Form: TForm;
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Collection: TEasyCollection;
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Listview: TCustomEasyListview;
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end;
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TEditorList = class
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private
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FFormList: TThreadList;
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protected
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property FormList: TThreadList read FFormList write FFormList;
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public
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constructor Create;
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destructor Destroy; override;
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function CollectionRegistered(Collection: TEasyCollection; var Form: TForm): Boolean;
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procedure ListviewDestroying(Listview: TCustomEasyListview; DestroyAll: Boolean = False);
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procedure RegisterEditor(Form: TForm; Collection: TEasyCollection; Listview: TCustomEasyListview);
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procedure UnRegister(Form: TForm; Collection: TEasyCollection);
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end;
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TEasyCollectionEditor = class(TPropertyEditor)
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public
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procedure Edit; override;
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function GetAttributes: TPropertyAttributes; override;
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function GetValue: string; override;
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end;
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procedure ShowEasyCollectionEditor(ADesigner: {$IFDEF COMPILER_6_UP}IDesigner{$ELSE}IFormDesigner{$ENDIF}; ACollection: TEasyCollection);
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var
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EditorList: TEditorList;
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implementation
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{$R *.dfm}
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type
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TEasyCollectionItemHack = class(TEasyCollectionItem);
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{$IFDEF COMPILER_6_UP}
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// To make the transition between D5's IPersistent and D6 and D7's TPersistent
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function ExtractPersistent(Inst: TPersistent): TPersistent;
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begin
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Result := Inst;
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end;
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{$ENDIF COMPILER_6_UP}
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procedure ShowEasyCollectionEditor(ADesigner: {$IFDEF COMPILER_6_UP}IDesigner{$ELSE}IFormDesigner{$ENDIF}; ACollection: TEasyCollection);
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var
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F: TForm;
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Selections: IDesignerSelections;
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begin
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{$IFDEF COMPILER_6_UP}
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Selections := TDesignerSelections.Create;
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{$ELSE}
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Selections := CreateSelectionList;
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{$ENDIF COMPILER_6_UP}
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ADesigner.GetSelections(Selections);
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if Selections.Count = 1 then
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begin
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if (ExtractPersistent( Selections[0]) is TCustomEasyListview) or
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(ExtractPersistent( Selections[0]) is TEasyGroup) then
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begin
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if not EditorList.CollectionRegistered(ACollection, F) then
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begin
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F := TFormEasyCollectionEditor.Create(Application);
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{$IFDEF COMPILER_9_UP}
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F.FormStyle := fsStayOnTop; // bug in D2005
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{$ENDIF COMPILER_9_UP}
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TFormEasyCollectionEditor(F).Collection := ACollection;
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TFormEasyCollectionEditor(F).Designer := ADesigner;
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if (ExtractPersistent( Selections[0]) is TCustomEasyListview) then
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begin
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TFormEasyCollectionEditor(F).Listview := TCustomEasyListview( Selections[0]);
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EditorList.RegisterEditor(F, ACollection, TCustomEasyListview( Selections[0]))
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end else
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begin
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TFormEasyCollectionEditor(F).Listview := (TEasyGroup( Selections[0])).OwnerListview;
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EditorList.RegisterEditor(F, ACollection, (TEasyGroup( Selections[0])).OwnerListview);
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end;
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F.Show
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end else
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begin
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F.Show;
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SetForegroundWindow(F.Handle);
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end
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end
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end
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end;
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{ TEditorList }
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constructor TEditorList.Create;
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begin
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FormList := TThreadList.Create;
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end;
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destructor TEditorList.Destroy;
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begin
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FormList.Free;
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inherited Destroy;
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end;
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function TEditorList.CollectionRegistered(Collection: TEasyCollection;
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var Form: TForm): Boolean;
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var
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List: TList;
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i: Integer;
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RegRec: PFormRegRec;
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begin
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Result := False;
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Form := nil;
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List := FormList.LockList;
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try
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i := 0;
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while (i < List.Count) and not Result do
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begin
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RegRec := PFormRegRec(List[i]);
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if RegRec.Collection = Collection then
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begin
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Form := RegRec.Form;
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Result := True;
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end;
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Inc(i)
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end
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finally
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FormList.UnLockList;
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end
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end;
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procedure TEditorList.ListviewDestroying(Listview: TCustomEasyListview; DestroyAll: Boolean = False);
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var
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List: TList;
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i: Integer;
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RegRec: PFormRegRec;
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begin
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List := FormList.LockList;
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try
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i := List.Count - 1;
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while (i > -1) do
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begin
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RegRec := PFormRegRec(List[i]);
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if (RegRec.Listview = Listview) or DestroyAll then
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begin
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RegRec.Form.Hide;
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RegRec.Form.Release;
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Dispose( PFormRegRec(List[i]));
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List.Delete(i)
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end;
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Dec(i)
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end
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finally
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FormList.UnLockList;
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end
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end;
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procedure TEditorList.RegisterEditor(Form: TForm; Collection: TEasyCollection;
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Listview: TCustomEasyListview);
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var
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List: TList;
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RegRec: PFormRegRec;
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begin
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List := FormList.LockList;
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try
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New(RegRec);
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RegRec.Form := Form;
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RegRec.Collection := Collection;
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RegRec.Listview := Listview;
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List.Add(RegRec);
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finally
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FormList.UnLockList;
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end
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end;
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procedure TEditorList.UnRegister(Form: TForm; Collection: TEasyCollection);
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var
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List: TList;
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i: Integer;
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RegRec: PFormRegRec;
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begin
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List := FormList.LockList;
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try
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i := List.Count - 1;
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while (i > -1) do
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begin
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RegRec := PFormRegRec(List[i]);
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if (RegRec.Form = Form) and (RegRec.Collection = Collection) then
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begin
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Dispose( PFormRegRec(List[i]));
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List.Delete(i)
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end;
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Dec(i)
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end
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finally
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FormList.UnLockList;
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end
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end;
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{ TEasyCollectionEditor }
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function TEasyCollectionEditor.GetAttributes: TPropertyAttributes;
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begin
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Result := [paDialog, paReadOnly{$IFDEF COMPILER_6_UP}, paVCL{$ENDIF COMPILER_6_UP}];
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end;
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function TEasyCollectionEditor.GetValue: string;
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begin
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Result := 'TEasyCollection'
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end;
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procedure TEasyCollectionEditor.Edit;
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begin
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// WL, 2006/01/22: extracted code to separate method to be able to show
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// the editor on listview doubleclick.
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ShowEasyCollectionEditor(
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Designer,
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TEasyCollection(GetObjectProp(GetComponent(0), GetPropInfo)));
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end;
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procedure TFormEasyCollectionEditor.FormClose(Sender: TObject;
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var Action: TCloseAction);
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begin
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Designer.ClearSelection;
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EditorList.UnRegister(Self, Collection);
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Action := caFree
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end;
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{$IFNDEF COMPILER_6_UP}
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procedure TFormEasyCollectionEditor.ComponentDeleted(Component: IPersistent);
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begin
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inherited;
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if ExtractPersistent(Component) = Listview then
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begin
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EditorList.ListviewDestroying(Listview);
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Listview := nil;
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Collection := nil
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end
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end;
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function TFormEasyCollectionEditor.UniqueName(Component: TComponent): string;
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begin
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Result := Designer.UniqueName(Component.ClassName);
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end;
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procedure TFormEasyCollectionEditor.FormClosed(AForm: TCustomForm);
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begin
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inherited;
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// D4 and D5 have bug in this somehow so destroy all the editor when any form
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// is closed.
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if Designer = Self.Designer then
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begin
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EditorList.ListviewDestroying(Listview, True);
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Listview := nil;
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Collection := nil
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end
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end;
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procedure TFormEasyCollectionEditor.FormModified;
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begin
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Refresh;
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end;
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{$ENDIF}
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{$IFDEF COMPILER_6_UP}
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procedure TFormEasyCollectionEditor.DesignerClosed(const Designer: IDesigner;
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AGoingDormant: Boolean);
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begin
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inherited;
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if Designer = Self.Designer then
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begin
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EditorList.ListviewDestroying(Listview);
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Listview := nil;
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Collection := nil
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end
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end;
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procedure TFormEasyCollectionEditor.ItemDeleted(const ADesigner: IDesigner;
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Item: TPersistent);
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begin
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inherited;
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if Item = Listview then
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begin
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EditorList.ListviewDestroying(Listview);
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Listview := nil;
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Collection := nil
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end
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end;
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procedure TFormEasyCollectionEditor.ItemsModified(const Designer: IDesigner);
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begin
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Refresh;
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end;
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{$ENDIF}
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procedure TFormEasyCollectionEditor.ActionNewItemExecute(Sender: TObject);
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begin
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Collection.BeginUpdate(False);
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try
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Collection.Add
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finally
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Collection.EndUpdate;
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Rebuild;
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InvalidateRect(Collection.OwnerListview.Handle, nil, True);
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end
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end;
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procedure TFormEasyCollectionEditor.ActionDeleteItemExecute(
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Sender: TObject);
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var
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i: Integer;
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SelIndex: Integer;
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begin
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// We are deleting items that are selected in the Designer, clear this.
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Designer.SetSelections(nil);
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SelIndex := -1;
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Collection.BeginUpdate(True);
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try
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if Assigned(Listview1.Selected) then
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SelIndex := Listview1.Selected.Index;
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i := Listview1.Items.Count - 1;
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while i > -1 do
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begin
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if Listview1.Items[i].Selected then
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Collection.Delete(i);
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Dec(i)
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end
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finally
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Collection.EndUpdate(False);
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Rebuild;
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if (SelIndex > -1) and (Listview1.Items.Count > 0) then
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begin
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if SelIndex < Listview1.Items.Count then
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Listview1.Items[SelIndex].Selected := True
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else
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Listview1.Items[Listview1.Items.Count - 1].Selected := True
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end;
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end
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end;
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procedure TFormEasyCollectionEditor.ActionUpItemExecute(Sender: TObject);
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var
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SelIndex: Integer;
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begin
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if Listview1.SelCount = 1 then
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begin
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SelIndex := Listview1.Selected.Index;
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if SelIndex > 0 then
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begin
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Collection.Exchange(SelIndex, SelIndex - 1);
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Rebuild;
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Dec(SelIndex);
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Listview1.Items[SelIndex].Selected := True;
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end
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end
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end;
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procedure TFormEasyCollectionEditor.ActionDownItemExecute(Sender: TObject);
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var
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SelIndex: Integer;
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begin
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if Listview1.SelCount = 1 then
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begin
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if Listview1.Selected.Index < Listview1.Items.Count - 1 then
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begin
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SelIndex := Listview1.Selected.Index;
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Collection.Exchange(SelIndex, SelIndex + 1);
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Rebuild;
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Inc(SelIndex);
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Listview1.Items[SelIndex].Selected := True;
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end
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end
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end;
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procedure TFormEasyCollectionEditor.Rebuild;
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var
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i: Integer;
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Item: TListItem;
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begin
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Rebuilding := True;
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Listview1.Items.BeginUpdate;
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try
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Listview1.Items.Clear;
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for i := 0 to Collection.Count - 1 do
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begin
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Item := Listview1.Items.Add;
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Item.Caption := TEasyCollectionItemHack(Collection.Items[i]).GetDisplayName;
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end
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finally
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Listview1.Items.EndUpdate;
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Rebuilding := False;
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end;
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end;
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procedure TFormEasyCollectionEditor.ListView1Resize(Sender: TObject);
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begin
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Listview1.Columns[0].Width := Listview1.ClientWidth - 2
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end;
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procedure TFormEasyCollectionEditor.ListView1Change(Sender: TObject;
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Item: TListItem; Change: TItemChange);
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var
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Selections: IDesignerSelections;
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i: Integer;
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begin
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if not(csDestroying in ComponentState) then
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begin
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Statusbar1.Panels[0].Text := 'Selected: ' + IntToStr(Listview1.SelCount);
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if (Change = ctState) and not Rebuilding then
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begin
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if Listview1.SelCount = 0 then
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Designer.SelectComponent(Collection)
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else
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if Listview1.SelCount = 1 then
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Designer.SelectComponent(Collection.Items[Listview1.Selected.Index])
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else begin
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{$IFDEF COMPILER_6_UP}
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Selections := TDesignerSelections.Create;
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{$ELSE}
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Selections := CreateSelectionList;
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{$ENDIF COMPILER_6_UP}
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for i := 0 to Listview1.Items.Count - 1 do
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begin
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if Listview1.Items[i].Selected then
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begin
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{$IFDEF COMPILER_6_UP}
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Selections.Add( Collection.Items[i])
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{$ELSE}
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Selections.Add( MakeIPersistent(Collection.Items[i]))
|
|
{$ENDIF COMPILER_6_UP}
|
|
end
|
|
end;
|
|
Designer.SetSelections(Selections);
|
|
end
|
|
end;
|
|
ActionDeleteItem.Enabled := Listview1.SelCount > 0;
|
|
ActionUpItem.Enabled := Listview1.SelCount > 0;
|
|
ActionDownItem.Enabled := Listview1.SelCount > 0;
|
|
end
|
|
end;
|
|
|
|
procedure TFormEasyCollectionEditor.DoShow;
|
|
begin
|
|
inherited;
|
|
Rebuild;
|
|
end;
|
|
|
|
procedure TFormEasyCollectionEditor.ListView1KeyDown(Sender: TObject;
|
|
var Key: Word; Shift: TShiftState);
|
|
begin
|
|
if Key = VK_DELETE then
|
|
ActionDeleteItemExecute(Self)
|
|
end;
|
|
|
|
procedure TFormEasyCollectionEditor.HandleDelete;
|
|
begin
|
|
|
|
end;
|
|
|
|
procedure TFormEasyCollectionEditor.ListView1KeyPress(Sender: TObject;
|
|
var Key: Char);
|
|
begin
|
|
{$IFDEF COMPILER_6_UP}
|
|
Designer.ModalEdit(Key, Self);
|
|
{$ENDIF}
|
|
end;
|
|
|
|
procedure TFormEasyCollectionEditor.Refresh;
|
|
var
|
|
i: Integer;
|
|
begin
|
|
if Assigned(Collection) then
|
|
begin
|
|
if Collection.Count = Listview1.Items.Count then
|
|
begin
|
|
Rebuilding := True;
|
|
Listview1.Items.BeginUpdate;
|
|
try
|
|
for i := 0 to Collection.Count - 1 do
|
|
begin
|
|
Listview1.Items[i].Caption := TEasyCollectionItemHack(Collection.Items[i]).GetDisplayName;
|
|
end
|
|
finally
|
|
Listview1.Items.EndUpdate;
|
|
Rebuilding := False;
|
|
end;
|
|
end else
|
|
Rebuild;
|
|
InvalidateRect(Collection.OwnerListview.Handle, nil, True);
|
|
end
|
|
end;
|
|
|
|
initialization
|
|
EditorList := TEditorList.Create;
|
|
|
|
finalization
|
|
EditorList.Free;
|
|
|
|
end.
|
|
|