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			73 lines
		
	
	
	
		
			2.4 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			73 lines
		
	
	
	
		
			2.4 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| /*
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|  * Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
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|  *
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|  * SPDX-License-Identifier: BSD-2-Clause
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|  */
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| 
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| #include <LibWeb/Bindings/MediaQueryListWrapper.h>
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| #include <LibWeb/CSS/MediaQueryList.h>
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| #include <LibWeb/DOM/Document.h>
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| #include <LibWeb/DOM/EventDispatcher.h>
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| #include <LibWeb/DOM/EventListener.h>
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| 
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| namespace Web::CSS {
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| 
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| MediaQueryList::MediaQueryList(DOM::Document& document, String media)
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|     : DOM::EventTarget(static_cast<Bindings::ScriptExecutionContext&>(document))
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|     , m_document(document)
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|     , m_media(move(media))
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| {
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| }
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| 
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| MediaQueryList::~MediaQueryList()
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| {
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| }
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| 
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| // https://drafts.csswg.org/cssom-view/#dom-mediaquerylist-media
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| String MediaQueryList::media() const
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| {
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|     // TODO: Replace this with a "media query list" and serialize on demand
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|     return m_media;
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| }
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| 
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| // https://drafts.csswg.org/cssom-view/#dom-mediaquerylist-matches
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| bool MediaQueryList::matches() const
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| {
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|     // TODO: Implement me :^)
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|     return false;
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| }
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| 
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| bool MediaQueryList::dispatch_event(NonnullRefPtr<DOM::Event> event)
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| {
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|     return DOM::EventDispatcher::dispatch(*this, event);
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| }
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| 
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| JS::Object* MediaQueryList::create_wrapper(JS::GlobalObject& global_object)
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| {
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|     return wrap(global_object, *this);
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| }
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| 
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| // https://www.w3.org/TR/cssom-view/#dom-mediaquerylist-addlistener
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| void MediaQueryList::add_listener(RefPtr<DOM::EventListener> listener)
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| {
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|     // 1. If listener is null, terminate these steps.
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|     if (!listener)
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|         return;
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| 
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|     // 2. Append an event listener to the associated list of event listeners with type set to change,
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|     //    callback set to listener, and capture set to false, unless there already is an event listener
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|     //    in that list with the same type, callback, and capture.
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|     //    (NOTE: capture is set to false by default)
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|     add_event_listener(HTML::EventNames::change, listener);
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| }
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| 
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| // https://www.w3.org/TR/cssom-view/#dom-mediaquerylist-removelistener
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| void MediaQueryList::remove_listener(RefPtr<DOM::EventListener> listener)
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| {
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|     // 1. Remove an event listener from the associated list of event listeners, whose type is change, callback is listener, and capture is false.
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|     // NOTE: While the spec doesn't technically use remove_event_listener and instead manipulates the list directly, every major engine uses remove_event_listener.
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|     //       This means if an event listener removes another event listener that comes after it, the removed event listener will not be invoked.
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|     remove_event_listener(HTML::EventNames::change, listener);
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| }
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| 
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| }
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