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serenity/Userland/Libraries/LibWeb/Forward.h
Timothy Flynn d8106dda73 LibWeb: Add "Label" to be the layout node for HTMLLabelElement
The HTML <label> element is special in that it may be associated with
some other <input> element. When the label element is clicked, the input
element should be activated.

To achieve this, a LableableNode base class is introduced to provide an
interface for "labelable" elements to handle mouse events on their
associated labels. This not only allows clicking the label to activate
the input, but dragging the mouse from the label to the input (and vice-
versa) while the mouse is clicked will also active the label.

As of this commit, this infrastructure is not hooked up to any elements.
2021-04-04 16:13:25 +02:00

326 lines
8.3 KiB
C++

/*
* Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, the SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
namespace Web::CSS {
class CSSRule;
class CSSImportRule;
class CSSStyleDeclaration;
class CSSStyleRule;
class CSSStyleSheet;
class ElementInlineCSSStyleDeclaration;
class Length;
class Screen;
class Selector;
class StyleProperties;
class StyleResolver;
class StyleSheet;
enum class Display;
}
namespace Web::DOM {
class CharacterData;
class Comment;
class Document;
class DocumentFragment;
class DocumentType;
class DOMException;
class DOMImplementation;
class Element;
class Event;
class EventHandler;
class EventListener;
class EventTarget;
class MouseEvent;
class Node;
class ParentNode;
class Position;
class ShadowRoot;
class Text;
class Timer;
class Window;
class Range;
enum class QuirksMode;
}
namespace Web::HTML {
class CanvasRenderingContext2D;
class EventHandler;
class HTMLAnchorElement;
class HTMLAreaElement;
class HTMLAudioElement;
class HTMLBaseElement;
class HTMLBlinkElement;
class HTMLBodyElement;
class HTMLBRElement;
class HTMLButtonElement;
class HTMLCanvasElement;
class HTMLDataElement;
class HTMLDataListElement;
class HTMLDetailsElement;
class HTMLDialogElement;
class HTMLDirectoryElement;
class HTMLDivElement;
class HTMLDListElement;
class HTMLDocumentParser;
class HTMLElement;
class HTMLEmbedElement;
class HTMLFieldSetElement;
class HTMLFontElement;
class HTMLFormElement;
class HTMLFrameElement;
class HTMLFrameSetElement;
class HTMLHeadElement;
class HTMLHeadingElement;
class HTMLHRElement;
class HTMLHtmlElement;
class HTMLIFrameElement;
class HTMLImageElement;
class HTMLInputElement;
class HTMLLabelElement;
class HTMLLegendElement;
class HTMLLIElement;
class HTMLLinkElement;
class HTMLMapElement;
class HTMLMarqueeElement;
class HTMLMediaElement;
class HTMLMenuElement;
class HTMLMetaElement;
class HTMLMeterElement;
class HTMLModElement;
class HTMLObjectElement;
class HTMLOListElement;
class HTMLOptGroupElement;
class HTMLOptionElement;
class HTMLOutputElement;
class HTMLParagraphElement;
class HTMLParamElement;
class HTMLPictureElement;
class HTMLPreElement;
class HTMLProgressElement;
class HTMLQuoteElement;
class HTMLScriptElement;
class HTMLSelectElement;
class HTMLSlotElement;
class HTMLSourceElement;
class HTMLSpanElement;
class HTMLStyleElement;
class HTMLTableCaptionElement;
class HTMLTableCellElement;
class HTMLTableColElement;
class HTMLTableElement;
class HTMLTableRowElement;
class HTMLTableSectionElement;
class HTMLTemplateElement;
class HTMLTextAreaElement;
class HTMLTimeElement;
class HTMLTitleElement;
class HTMLTrackElement;
class HTMLUListElement;
class HTMLUnknownElement;
class HTMLVideoElement;
class ImageData;
}
namespace Web::HighResolutionTime {
class Performance;
}
namespace Web::NavigationTiming {
class PerformanceTiming;
}
namespace Web::SVG {
class SVGElement;
class SVGGeometryElement;
class SVGGraphicsElement;
class SVGPathElement;
class SVGSVGElement;
}
namespace Web::Layout {
enum class LayoutMode;
enum class PaintPhase;
class BlockBox;
class BlockFormattingContext;
class Box;
class ButtonBox;
class CheckBox;
class FormattingContext;
class InitialContainingBlockBox;
class InlineFormattingContext;
class Label;
class LabelableNode;
class LineBox;
class LineBoxFragment;
class Node;
class NodeWithStyle;
class RadioButton;
class ReplacedBox;
}
namespace Web {
class EventHandler;
class EditEventHandler;
class Frame;
class FrameLoader;
class InProcessWebView;
class LoadRequest;
class Origin;
class OutOfProcessWebView;
class Page;
class PageClient;
class PaintContext;
class Resource;
class ResourceLoader;
class StackingContext;
}
namespace Web::XHR {
class ProgressEvent;
class XMLHttpRequest;
class XMLHttpRequestEventTarget;
}
namespace Web::Bindings {
class CSSStyleDeclarationWrapper;
class CSSStyleSheetWrapper;
class CanvasRenderingContext2DWrapper;
class CharacterDataWrapper;
class CommentWrapper;
class DocumentFragmentWrapper;
class DocumentTypeWrapper;
class DocumentWrapper;
class DOMExceptionWrapper;
class DOMImplementationWrapper;
class ElementWrapper;
class EventListenerWrapper;
class EventTargetWrapper;
class EventWrapper;
class HTMLAnchorElementWrapper;
class HTMLAreaElementWrapper;
class HTMLAudioElementWrapper;
class HTMLBaseElementWrapper;
class HTMLBodyElementWrapper;
class HTMLBRElementWrapper;
class HTMLButtonElementWrapper;
class HTMLCanvasElementWrapper;
class HTMLDataElementWrapper;
class HTMLDataListElementWrapper;
class HTMLDetailsElementWrapper;
class HTMLDialogElementWrapper;
class HTMLDirectoryElementWrapper;
class HTMLDivElementWrapper;
class HTMLDListElementWrapper;
class HTMLElementWrapper;
class HTMLEmbedElementWrapper;
class HTMLFieldSetElementWrapper;
class HTMLFontElementWrapper;
class HTMLFormElementWrapper;
class HTMLFrameElementWrapper;
class HTMLFrameSetElementWrapper;
class HTMLHRElementWrapper;
class HTMLHeadElementWrapper;
class HTMLHeadingElementWrapper;
class HTMLHtmlElementWrapper;
class HTMLIFrameElementWrapper;
class HTMLImageElementWrapper;
class HTMLInputElementWrapper;
class HTMLLabelElementWrapper;
class HTMLLegendElementWrapper;
class HTMLLIElementWrapper;
class HTMLLinkElementWrapper;
class HTMLMapElementWrapper;
class HTMLMarqueeElementWrapper;
class HTMLMediaElementWrapper;
class HTMLMenuElementWrapper;
class HTMLMetaElementWrapper;
class HTMLMeterElementWrapper;
class HTMLModElementWrapper;
class HTMLObjectElementWrapper;
class HTMLOListElementWrapper;
class HTMLOptGroupElementWrapper;
class HTMLOptionElementWrapper;
class HTMLOutputElementWrapper;
class HTMLParagraphElementWrapper;
class HTMLParamElementWrapper;
class HTMLPictureElementWrapper;
class HTMLPreElementWrapper;
class HTMLProgressElementWrapper;
class HTMLQuoteElementWrapper;
class HTMLScriptElementWrapper;
class HTMLSelectElementWrapper;
class HTMLSlotElementWrapper;
class HTMLSourceElementWrapper;
class HTMLSpanElementWrapper;
class HTMLStyleElementWrapper;
class HTMLTableCaptionElementWrapper;
class HTMLTableCellElementWrapper;
class HTMLTableColElementWrapper;
class HTMLTableElementWrapper;
class HTMLTableRowElementWrapper;
class HTMLTableSectionElementWrapper;
class HTMLTemplateElementWrapper;
class HTMLTextAreaElementWrapper;
class HTMLTimeElementWrapper;
class HTMLTitleElementWrapper;
class HTMLTrackElementWrapper;
class HTMLUListElementWrapper;
class HTMLUnknownElementWrapper;
class HTMLVideoElementWrapper;
class ImageDataWrapper;
class LocationObject;
class MouseEventWrapper;
class NodeWrapper;
class PerformanceTimingWrapper;
class PerformanceWrapper;
class ProgressEventWrapper;
class ScreenWrapper;
class ScriptExecutionContext;
class SubmitEventWrapper;
class SVGElementWrapper;
class SVGGeometryElementWrapper;
class SVGGraphicsElementWrapper;
class SVGPathElementWrapper;
class SVGSVGElementWrapper;
class StyleSheetWrapper;
class StyleSheetListWrapper;
class TextWrapper;
class UIEventWrapper;
class WindowObject;
class Wrappable;
class Wrapper;
class XMLHttpRequestConstructor;
class XMLHttpRequestPrototype;
class XMLHttpRequestWrapper;
class XMLHttpRequestEventTargetWrapper;
class RangeConstructor;
class RangePrototype;
class RangeWrapper;
}