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ladybird/Libraries/LibWeb/CSS/MediaList.h

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LibWeb: Add MediaList This is a list of MediaQuery objects. Not to be confused with `MediaQueryList`, which is concerned with firing events when a media query's match-state changes.
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/*
LibWeb: Add MediaList wrapper Most of the pieces were already there, I'd just forgotten to actually wire them up.
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* Copyright (c) 2021-2022, Sam Atkins <atkinssj@serenityos.org>
Meta: Update my e-mail address everywhere
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* Copyright (c) 2022, Andreas Kling <andreas@ladybird.org>
LibWeb: Restore proper functionality of legacy platform objects With the GC heap conversion, the functionality of legacy platform objects was broken. This is because the generated implementation of one of them was used for all of them, removing functionality such as deletion. This re-adds all functionality, where questions such as "does the object support indexed properties?" is instead answered by virtual functions instead of by the IDL generator checking the presence of certain keywords/attributes.
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* Copyright (c) 2023, Luke Wilde <lukew@serenityos.org>
LibWeb: Add MediaList This is a list of MediaQuery objects. Not to be confused with `MediaQueryList`, which is concerned with firing events when a media query's match-state changes.
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*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Optional.h>
LibWeb: Make MediaList GC-allocated
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#include <LibJS/Runtime/Object.h>
LibWeb: Delete LegacyPlatformObject and move behavior to PlatformObject We have two known PlatformObjects that need to implement some of the behavior of LegacyPlatformObjects to date: Window, and HTMLFormElement. To make this not require double (or virtual) inheritance of PlatformObject, move the behavior of LegacyPlatformObject into PlatformObject. The selection of LegacyPlatformObject behavior is done with a new bitfield of feature flags instead of a dozen virtual functions that return bool. This change simplifies every class involved in the diff with the notable exception of Window, which now needs some ugly const casts to implement named property access.
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#include <LibWeb/Bindings/PlatformObject.h>
LibWeb: Add MediaList This is a list of MediaQuery objects. Not to be confused with `MediaQueryList`, which is concerned with firing events when a media query's match-state changes.
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#include <LibWeb/CSS/MediaQuery.h>
namespace Web::CSS {
// https://www.w3.org/TR/cssom-1/#the-medialist-interface
LibWeb: Delete LegacyPlatformObject and move behavior to PlatformObject We have two known PlatformObjects that need to implement some of the behavior of LegacyPlatformObjects to date: Window, and HTMLFormElement. To make this not require double (or virtual) inheritance of PlatformObject, move the behavior of LegacyPlatformObject into PlatformObject. The selection of LegacyPlatformObject behavior is done with a new bitfield of feature flags instead of a dozen virtual functions that return bool. This change simplifies every class involved in the diff with the notable exception of Window, which now needs some ugly const casts to implement named property access.
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class MediaList final : public Bindings::PlatformObject {
WEB_PLATFORM_OBJECT(MediaList, Bindings::PlatformObject);
LibGC+Everywhere: Factor out a LibGC from LibJS Resulting in a massive rename across almost everywhere! Alongside the namespace change, we now have the following names: * JS::NonnullGCPtr -> GC::Ref * JS::GCPtr -> GC::Ptr * JS::HeapFunction -> GC::Function * JS::CellImpl -> GC::Cell * JS::Handle -> GC::Root
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GC_DECLARE_ALLOCATOR(MediaList);
LibWeb: Add MediaList wrapper Most of the pieces were already there, I'd just forgotten to actually wire them up.
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LibWeb: Add MediaList This is a list of MediaQuery objects. Not to be confused with `MediaQueryList`, which is concerned with firing events when a media query's match-state changes.
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public:
LibGC+Everywhere: Factor out a LibGC from LibJS Resulting in a massive rename across almost everywhere! Alongside the namespace change, we now have the following names: * JS::NonnullGCPtr -> GC::Ref * JS::GCPtr -> GC::Ptr * JS::HeapFunction -> GC::Function * JS::CellImpl -> GC::Cell * JS::Handle -> GC::Root
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[[nodiscard]] static GC::Ref<MediaList> create(JS::Realm&, Vector<NonnullRefPtr<MediaQuery>>&&);
LibWeb: Add CSSStyleSheet constructor binding
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virtual ~MediaList() override = default;
LibWeb: Add MediaList This is a list of MediaQuery objects. Not to be confused with `MediaQueryList`, which is concerned with firing events when a media query's match-state changes.
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LibWeb: Port MediaList interface from DeprecatedString to String
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String media_text() const;
void set_media_text(StringView);
LibWeb: Add MediaList This is a list of MediaQuery objects. Not to be confused with `MediaQueryList`, which is concerned with firing events when a media query's match-state changes.
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size_t length() const { return m_media.size(); }
LibWeb: Port MediaList interface from DeprecatedString to String
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Optional<String> item(u32 index) const;
void append_medium(StringView);
void delete_medium(StringView);
LibWeb: Add MediaList This is a list of MediaQuery objects. Not to be confused with `MediaQueryList`, which is concerned with firing events when a media query's match-state changes.
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Bindings: Make item_value return an Optional<JS::Value> This removes some ambiguity about what the return value should be if the index is out of range. Previously, we would sometimes return a JS null, and other times a JS undefined. It will also let us fold together the checks for whether an index is a supported property index, followed by getting the value just afterwards.
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virtual Optional<JS::Value> item_value(size_t index) const override;
LibWeb: Make MediaList GC-allocated
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LibWeb: Use document's viewport when resolving lengths in media queries Previously we would always use the window's viewport which was incorrect if we were within an iframe. This is likely applicable to all uses of `Length::ResolutionContext::for_window`.
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bool evaluate(DOM::Document const&);
LibWeb: Implement MediaQuery matching :^) Currently, `evaluate()` recalculates whether the MediaQuery matches or not, and stores it in `m_matches`, which users can query using `matches()`. This allows us to know when the match-state changes, which is required to fire MediaQueryList's change event.
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bool matches() const;
LibWeb: Invalidate style (and rule cache) on MediaList changes This makes dynamic changes to a style sheet's media attribute actually take effect immediately.
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void set_associated_style_sheet(GC::Ref<StyleSheet> style_sheet) { m_associated_style_sheet = style_sheet; }
LibWeb: Add MediaList This is a list of MediaQuery objects. Not to be confused with `MediaQueryList`, which is concerned with firing events when a media query's match-state changes.
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private:
Everywhere: Stop using NonnullRefPtrVector This class had slightly confusing semantics and the added weirdness doesn't seem worth it just so we can say "." instead of "->" when iterating over a vector of NNRPs. This patch replaces NonnullRefPtrVector<T> with Vector<NNRP<T>>.
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MediaList(JS::Realm&, Vector<NonnullRefPtr<MediaQuery>>&&);
LibWeb+LibJS: Make the EventTarget hierarchy (incl. DOM) GC-allocated This is a monster patch that turns all EventTargets into GC-allocated PlatformObjects. Their C++ wrapper classes are removed, and the LibJS garbage collector is now responsible for their lifetimes. There's a fair amount of hacks and band-aids in this patch, and we'll have a lot of cleanup to do after this.
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LibJS: Make Cell::initialize() return void Stop worrying about tiny OOMs. Work towards #20405
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virtual void initialize(JS::Realm&) override;
LibWeb: Invalidate style (and rule cache) on MediaList changes This makes dynamic changes to a style sheet's media attribute actually take effect immediately.
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virtual void visit_edges(Visitor&) override;
LibWeb: Move passing of Web object prototypes out of constructors
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LibWeb: Invalidate style (and rule cache) on MediaList changes This makes dynamic changes to a style sheet's media attribute actually take effect immediately.
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GC::Ptr<StyleSheet> m_associated_style_sheet;
Everywhere: Stop using NonnullRefPtrVector This class had slightly confusing semantics and the added weirdness doesn't seem worth it just so we can say "." instead of "->" when iterating over a vector of NNRPs. This patch replaces NonnullRefPtrVector<T> with Vector<NNRP<T>>.
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Vector<NonnullRefPtr<MediaQuery>> m_media;
LibWeb: Add MediaList This is a list of MediaQuery objects. Not to be confused with `MediaQueryList`, which is concerned with firing events when a media query's match-state changes.
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};
}
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