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	From the HTML spec:
    Modulo platform conventions, it is suggested that the following
    elements should be considered as focusable areas and be sequentially
    focusable:
      ...
    - button elements
    - select elements
    - textarea elements
      ...
Also add a spec link to the existing HTMLAnchorElement::is_focusable().
Note that this still doesn't allow triggering keyboard-focused buttons,
checkboxes, or radio buttons - we don't seem to run the expected
activation behavior for any of them.
		
	
			
		
			
				
	
	
		
			59 lines
		
	
	
	
		
			1.9 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			59 lines
		
	
	
	
		
			1.9 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/*
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 * Copyright (c) 2020, the SerenityOS developers.
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 *
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 * SPDX-License-Identifier: BSD-2-Clause
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 */
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#pragma once
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#include <LibWeb/HTML/FormAssociatedElement.h>
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#include <LibWeb/HTML/HTMLElement.h>
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namespace Web::HTML {
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#define ENUMERATE_HTML_BUTTON_TYPE_ATTRIBUTES              \
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    __ENUMERATE_HTML_BUTTON_TYPE_ATTRIBUTE(submit, Submit) \
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    __ENUMERATE_HTML_BUTTON_TYPE_ATTRIBUTE(reset, Reset)   \
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    __ENUMERATE_HTML_BUTTON_TYPE_ATTRIBUTE(button, Button)
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class HTMLButtonElement final
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    : public HTMLElement
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    , public FormAssociatedElement {
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    FORM_ASSOCIATED_ELEMENT(HTMLElement, HTMLButtonElement)
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public:
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    using WrapperType = Bindings::HTMLButtonElementWrapper;
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    HTMLButtonElement(DOM::Document&, DOM::QualifiedName);
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    virtual ~HTMLButtonElement() override;
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    enum class TypeAttributeState {
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#define __ENUMERATE_HTML_BUTTON_TYPE_ATTRIBUTE(_, state) state,
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        ENUMERATE_HTML_BUTTON_TYPE_ATTRIBUTES
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#undef __ENUMERATE_HTML_BUTTON_TYPE_ATTRIBUTE
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    };
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    String type() const;
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    TypeAttributeState type_state() const;
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    void set_type(String const&);
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    // ^EventTarget
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    // https://html.spec.whatwg.org/multipage/interaction.html#the-tabindex-attribute:the-button-element
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    virtual bool is_focusable() const override { return true; }
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    // ^FormAssociatedElement
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    // https://html.spec.whatwg.org/multipage/forms.html#category-listed
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    virtual bool is_listed() const override { return true; }
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    // https://html.spec.whatwg.org/multipage/forms.html#category-submit
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    virtual bool is_submittable() const override { return true; }
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    // https://html.spec.whatwg.org/multipage/forms.html#category-autocapitalize
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    virtual bool is_auto_capitalize_inheriting() const override { return true; }
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    // ^HTMLElement
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    // https://html.spec.whatwg.org/multipage/forms.html#category-label
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    virtual bool is_labelable() const override { return true; }
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};
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}
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