351 lines
13 KiB
ObjectPascal
351 lines
13 KiB
ObjectPascal
{*******************************************************************}
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{ }
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{ ExpressWeb Framework by Developer Express }
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{ Designer Module }
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{ }
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{ Copyright (c) 2000-2009 Developer Express Inc. }
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{ ALL RIGHTS RESERVED }
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{ }
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{ The entire contents of this file is protected by U.S. and }
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{ International Copyright Laws. Unauthorized reproduction, }
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{ reverse-engineering, and distribution of all or any portion of }
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{ the code contained in this file is strictly prohibited and may }
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{ result in severe civil and criminal penalties and will be }
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{ prosecuted to the maximum extent possible under the law. }
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{ }
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{ RESTRICTIONS }
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{ }
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{ THIS SOURCE CODE AND ALL RESULTING INTERMEDIATE FILES }
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{ (DCU, OBJ, DLL, ETC.) ARE CONFIDENTIAL AND PROPRIETARY TRADE }
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{ SECRETS OF DEVELOPER EXPRESS INC. THE REGISTERED DEVELOPER IS }
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{ LICENSED TO DISTRIBUTE THE EXPRESSWEB FRAMEWORK AND ALL }
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{ ACCOMPANYING VCL CLASSES AS PART OF AN EXECUTABLE WEB }
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{ APPLICATION ONLY. }
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{ }
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{ THE SOURCE CODE CONTAINED WITHIN THIS FILE AND ALL RELATED }
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{ FILES OR ANY PORTION OF ITS CONTENTS SHALL AT NO TIME BE }
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{ COPIED, TRANSFERRED, SOLD, DISTRIBUTED, OR OTHERWISE MADE }
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{ AVAILABLE TO OTHER INDIVIDUALS WITHOUT EXPRESS WRITTEN CONSENT }
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{ AND PERMISSION FROM DEVELOPER EXPRESS INC. }
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{ }
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{ CONSULT THE END USER LICENSE AGREEMENT FOR INFORMATION ON }
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{ ADDITIONAL RESTRICTIONS. }
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{ }
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{*******************************************************************}
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unit cxWebDsgnHTMLCtrls;
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interface
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uses Classes, SysUtils, Windows, MSHTML_TLB;
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type
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TcxBaseHTMLElement = class;
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IcxBaseHTMLElementCreatorNotify = interface
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procedure HTMLElementCreated(ABaseHTMLElement: TcxBaseHTMLElement);
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function GetHTMLElementFileName: string;
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end;
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TcxBaseHTMLElement = class(TComponent)
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protected
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class function GetStyle(const AAbsolutePosition: Boolean; const ARect: TRect): string; virtual;
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public
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constructor Create(AOwner: TComponent); override;
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; virtual; abstract;
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class function GetInnerHTML: string; virtual;
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class procedure AfterElementCreated(AElement: IHTMLElement); virtual;
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end;
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TcxBaseHTMLElementClass = class of TcxBaseHTMLElement;
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TcxHTMLLabelElement = class(TcxBaseHTMLElement)
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public
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; override;
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class function GetInnerHTML: string; override;
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end;
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TcxHTMLButtonElement = class(TcxBaseHTMLElement)
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public
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; override;
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end;
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TcxHTMLResetButtonElement = class(TcxBaseHTMLElement)
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public
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; override;
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end;
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TcxHTMLSubmitButtonElement = class(TcxBaseHTMLElement)
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public
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; override;
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end;
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TcxHTMLTextFieldElement = class(TcxBaseHTMLElement)
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public
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; override;
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end;
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TcxHTMLTextAreaElement = class(TcxBaseHTMLElement)
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public
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; override;
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end;
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TcxHTMLFileFieldElement = class(TcxBaseHTMLElement)
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public
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; override;
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end;
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TcxHTMLPasswordFieldElement = class(TcxBaseHTMLElement)
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public
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; override;
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end;
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TcxHTMLCheckBoxElement = class(TcxBaseHTMLElement)
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public
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; override;
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end;
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TcxHTMLRadioButtonElement = class(TcxBaseHTMLElement)
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public
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; override;
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end;
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TcxHTMLHiddenElement = class(TcxBaseHTMLElement)
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public
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; override;
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end;
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TcxHTMLTableElement = class(TcxBaseHTMLElement)
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public
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; override;
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class procedure AfterElementCreated(AElement: IHTMLElement); override;
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end;
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TcxHTMLImageElement = class(TcxBaseHTMLElement)
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public
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; override;
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end;
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TcxHTMLListBoxElement = class(TcxBaseHTMLElement)
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public
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; override;
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end;
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TcxHTMLDropDownElement = class(TcxBaseHTMLElement)
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public
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; override;
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end;
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TcxHTMLHorizontalRuleElement = class(TcxBaseHTMLElement)
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public
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class function GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string; override;
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end;
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procedure AddBaseHTMLElementCreatorNotify(ANotify: IcxBaseHTMLElementCreatorNotify);
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procedure RemoveBaseHTMLElementCreatorNotify(ANotify: IcxBaseHTMLElementCreatorNotify);
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procedure Register;
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implementation
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uses
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ToolsAPI;
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{$R *.dcr}
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var
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FElementCreateNotifyList: IInterfaceList = nil;
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procedure AddBaseHTMLElementCreatorNotify(ANotify: IcxBaseHTMLElementCreatorNotify);
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begin
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if (FElementCreateNotifyList = nil) then
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FElementCreateNotifyList := TInterfaceList.Create;
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FElementCreateNotifyList.Add(ANotify);
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end;
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procedure RemoveBaseHTMLElementCreatorNotify(ANotify: IcxBaseHTMLElementCreatorNotify);
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begin
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if (FElementCreateNotifyList = nil) then exit;
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FElementCreateNotifyList.Remove(ANotify);
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if FElementCreateNotifyList.Count = 0 then
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FElementCreateNotifyList := nil;
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end;
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function BaseHTMLElementCreatorNotify(ABaseHTMLElement: TcxBaseHTMLElement): Boolean;
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var
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I: Integer;
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AFileName: string;
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begin
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Result := False;
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if FElementCreateNotifyList = nil then exit;
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AFileName := (BorlandIDEServices as IOTAModuleServices).CurrentModule.FileName;
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for I := 0 to FElementCreateNotifyList.Count - 1 do
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if CompareText(AFileName, IcxBaseHTMLElementCreatorNotify(FElementCreateNotifyList[I]).GetHTMLElementFileName) = 0 then
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begin
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Result := True;
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IcxBaseHTMLElementCreatorNotify(FElementCreateNotifyList[I]).HTMLElementCreated(ABaseHTMLElement);
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exit;
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end;
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end;
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{ TcxBaseHTMLElement }
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constructor TcxBaseHTMLElement.Create(AOwner: TComponent);
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begin
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if not BaseHTMLElementCreatorNotify(self) then
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//TODO move to resources
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raise Exception.CreateFmt('You can not create an instance of [%s] component class', [ClassName]);
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end;
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class function TcxBaseHTMLElement.GetStyle(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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if AAbsolutePosition then
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begin
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with ARect do
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if (Right - Left > 0) and (Bottom - Top > 0) then
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Result := Format('Style="POSITION:absolute; LEFT:%dpx; TOP:%dpx; WIDTH:%dpx; HEIGHT:%dpx"',
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[Left, Top, Right - Left, Bottom - Top])
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else Result := Format('Style="POSITION:absolute; LEFT:%dpx; TOP:%dpx"', [Left, Top])
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end else Result := '';
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end;
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class function TcxBaseHTMLElement.GetInnerHTML: string;
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begin
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Result := '';
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end;
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class procedure TcxBaseHTMLElement.AfterElementCreated(AElement: IHTMLElement);
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begin
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end;
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class function TcxHTMLLabelElement.GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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if AAbsolutePosition then
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Result := Format('<DIV %s></DIV>', [GetStyle(AAbsolutePosition, ARect)])
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else Result := Format('<DIV STYLE="WIDTH:%dpx; HEIGHT:%dpx"></DIV>',
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[ARect.Right - ARect.Left, ARect.Bottom - ARect.Top])
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end;
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class function TcxHTMLLabelElement.GetInnerHTML: string;
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begin
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Result := ' Label ';
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end;
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class function TcxHTMLButtonElement.GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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Result := Format('<INPUT type="button" value="Button" %s>', [GetStyle(AAbsolutePosition, ARect)]);
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end;
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class function TcxHTMLResetButtonElement.GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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Result := Format('<INPUT type="reset" value="Reset" %s>', [GetStyle(AAbsolutePosition, ARect)]);
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end;
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class function TcxHTMLSubmitButtonElement.GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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Result := Format('<INPUT type="submit" value="Submit" %s>', [GetStyle(AAbsolutePosition, ARect)]);
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end;
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class function TcxHTMLTextFieldElement.GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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Result := Format('<INPUT type="text" %s>', [GetStyle(AAbsolutePosition, ARect)]);
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end;
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class function TcxHTMLTextAreaElement.GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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Result := Format('<TEXTAREA rows="2" cols="20" %s> </TEXTAREA>', [GetStyle(AAbsolutePosition, ARect)]);
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end;
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class function TcxHTMLFileFieldElement.GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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Result := Format('<INPUT type="file" %s>', [GetStyle(AAbsolutePosition, ARect)]);
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end;
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class function TcxHTMLPasswordFieldElement.GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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Result := Format('<INPUT type="password" %s>', [GetStyle(AAbsolutePosition, ARect)]);
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end;
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class function TcxHTMLCheckBoxElement.GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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Result := Format('<INPUT type="checkbox" %s>', [GetStyle(AAbsolutePosition, ARect)]);
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end;
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class function TcxHTMLRadioButtonElement.GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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Result := Format('<INPUT type="radio" %s>', [GetStyle(AAbsolutePosition, ARect)]);
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end;
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class function TcxHTMLHiddenElement.GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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Result := Format('<INPUT type="hidden" %s>', [GetStyle(AAbsolutePosition, ARect)]);
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end;
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class function TcxHTMLTableElement.GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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with ARect do
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Result := Format('<table cellspacing=1 cellpadding=1 width=%d height=%d border=1 %s></table>',
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[Right - Left, Bottom - Top, GetStyle(AAbsolutePosition, ARect)]);
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end;
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class procedure TcxHTMLTableElement.AfterElementCreated(AElement: IHTMLElement);
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var
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ATable: IHTMLTable;
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procedure InsertRow(AIndex: Integer);
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var
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ARow: IHTMLTableRow;
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ADispatch: IDispatch;
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begin
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ADispatch := ATable.insertRow(AIndex);
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if ADispatch.QueryInterface(IHTMLTableRow, ARow) = S_OK then
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begin
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ARow.insertCell(0);
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ARow.insertCell(1);
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ARow.insertCell(2);
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end;
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end;
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begin
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if not Supports(AElement, IHTMLTable, ATable) then exit;
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InsertRow(0);
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InsertRow(1);
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InsertRow(2);
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end;
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class function TcxHTMLImageElement.GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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Result := Format('<IMG alt="" src="" %s>', [GetStyle(AAbsolutePosition, ARect)]);
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end;
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class function TcxHTMLListBoxElement.GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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Result := Format('<SELECT size=2 %s> <OPTION></OPTION> </SELECT>', [GetStyle(AAbsolutePosition, ARect)]);
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end;
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class function TcxHTMLDropDownElement.GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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Result := Format('<SELECT %s> <OPTION></OPTION> </SELECT>', [GetStyle(AAbsolutePosition, ARect)]);
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end;
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class function TcxHTMLHorizontalRuleElement.GetHTML(const AAbsolutePosition: Boolean; const ARect: TRect): string;
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begin
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Result := Format('<HR width=100%% size=1 %s>', [GetStyle(AAbsolutePosition, ARect)]);
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end;
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procedure Register;
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begin
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RegisterComponents('EWF HTML Elements', [TcxHTMLLabelElement, TcxHTMLButtonElement,
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TcxHTMLResetButtonElement, TcxHTMLSubmitButtonElement, TcxHTMLTextFieldElement,
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TcxHTMLTextAreaElement, TcxHTMLFileFieldElement, TcxHTMLPasswordFieldElement,
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TcxHTMLCheckBoxElement, TcxHTMLRadioButtonElement, TcxHTMLHiddenElement,
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TcxHTMLTableElement, TcxHTMLImageElement, TcxHTMLListBoxElement, TcxHTMLDropDownElement,
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TcxHTMLHorizontalRuleElement]);
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end;
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end.
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