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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Trait representing an event source"><title>EventSource in cosmic::cctk::sctk::reexports::calloop - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../../../static.files/rustdoc-aa0817cf.css"><meta name="rustdoc-vars" data-root-path="../../../../../" data-static-root-path="../../../../../static.files/" data-current-crate="cosmic" data-themes="" data-resource-suffix="" data-rustdoc-version="1.90.0-nightly (3048886e5 2025-07-30)" data-channel="nightly" data-search-js="search-fa3e91e5.js" data-settings-js="settings-5514c975.js" ><script src="../../../../../static.files/storage-68b7e25d.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../../../../static.files/main-eebb9057.js"></script><noscript><link rel="stylesheet" href="../../../../../static.files/noscript-32bb7600.css"></noscript><link rel="alternate icon" type="image/png" href="../../../../../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../../../../../static.files/favicon-044be391.svg"></head><body class="rustdoc trait"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../../../../cosmic/index.html">cosmic</a><span class="version">1.0.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Event<wbr>Source</a></h2><h3><a href="#provided-associated-consts">Provided Associated Constants</a></h3><ul class="block"><li><a href="#associatedconstant.NEEDS_EXTRA_LIFECYCLE_EVENTS" title="NEEDS_EXTRA_LIFECYCLE_EVENTS">NEEDS_EXTRA_LIFECYCLE_EVENTS</a></li></ul><h3><a href="#required-associated-types">Required Associated Types</a></h3><ul class="block"><li><a href="#associatedtype.Error" title="Error">Error</a></li><li><a href="#associatedtype.Event" title="Event">Event</a></li><li><a href="#associatedtype.Metadata" title="Metadata">Metadata</a></li><li><a href="#associatedtype.Ret" title="Ret">Ret</a></li></ul><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.process_events" title="process_events">process_events</a></li><li><a href="#tymethod.register" title="register">register</a></li><li><a href="#tymethod.reregister" title="reregister">reregister</a></li><li><a href="#tymethod.unregister" title="unregister">unregister</a></li></ul><h3><a href="#provided-methods">Provided Methods</a></h3><ul class="block"><li><a href="#method.before_handle_events" title="before_handle_events">before_handle_events</a></li><li><a href="#method.before_sleep" title="before_sleep">before_sleep</a></li></ul><h3><a href="#foreign-impls">Implementations on Foreign Types</a></h3><ul class="block"><li><a href="#impl-EventSource-for-%26mut+T" title="&mut T">&mut T</a></li></ul><h3><a href="#dyn-compatibility">Dyn Compatibility</a></h3><h3><a href="#implementors">Implementors</a></h3></section><div id="rustdoc-modnav"><h2><a href="index.html">In cosmic::<wbr>cctk::<wbr>sctk::<wbr>reexports::<wbr>calloop</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><rustdoc-s
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type <a href="#associatedtype.Event" class="associatedtype">Event</a>;
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type <a href="#associatedtype.Metadata" class="associatedtype">Metadata</a>;
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type <a href="#associatedtype.Ret" class="associatedtype">Ret</a>;
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type <a href="#associatedtype.Error" class="associatedtype">Error</a>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><<a class="struct" href="../client/backend/smallvec/alloc/boxed/struct.Box.html" title="struct cosmic::cctk::sctk::reexports::client::backend::smallvec::alloc::boxed::Box">Box</a><dyn <a class="trait" href="https://doc.rust-lang.org/nightly/core/error/trait.Error.html" title="trait core::error::Error">Error</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>>>;
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const <a href="#associatedconstant.NEEDS_EXTRA_LIFECYCLE_EVENTS" class="constant">NEEDS_EXTRA_LIFECYCLE_EVENTS</a>: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a> = false;
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// Required methods
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fn <a href="#tymethod.process_events" class="fn">process_events</a><F>(
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&mut self,
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readiness: <a class="struct" href="struct.Readiness.html" title="struct cosmic::cctk::sctk::reexports::calloop::Readiness">Readiness</a>,
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token: <a class="struct" href="struct.Token.html" title="struct cosmic::cctk::sctk::reexports::calloop::Token">Token</a>,
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callback: F,
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) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="enum.PostAction.html" title="enum cosmic::cctk::sctk::reexports::calloop::PostAction">PostAction</a>, Self::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Error" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Error">Error</a>>
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<span class="where">where F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(Self::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Event" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Event">Event</a>, &mut Self::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Metadata" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Metadata">Metadata</a>) -> Self::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Ret" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Ret">Ret</a></span>;
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<span class="item-spacer"></span> fn <a href="#tymethod.register" class="fn">register</a>(
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&mut self,
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poll: &mut <a class="struct" href="struct.Poll.html" title="struct cosmic::cctk::sctk::reexports::calloop::Poll">Poll</a>,
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token_factory: &mut <a class="struct" href="struct.TokenFactory.html" title="struct cosmic::cctk::sctk::reexports::calloop::TokenFactory">TokenFactory</a>,
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) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="enum" href="enum.Error.html" title="enum cosmic::cctk::sctk::reexports::calloop::Error">Error</a>>;
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<span class="item-spacer"></span> fn <a href="#tymethod.reregister" class="fn">reregister</a>(
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&mut self,
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poll: &mut <a class="struct" href="struct.Poll.html" title="struct cosmic::cctk::sctk::reexports::calloop::Poll">Poll</a>,
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token_factory: &mut <a class="struct" href="struct.TokenFactory.html" title="struct cosmic::cctk::sctk::reexports::calloop::TokenFactory">TokenFactory</a>,
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) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="enum" href="enum.Error.html" title="enum cosmic::cctk::sctk::reexports::calloop::Error">Error</a>>;
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<span class="item-spacer"></span> fn <a href="#tymethod.unregister" class="fn">unregister</a>(&mut self, poll: &mut <a class="struct" href="struct.Poll.html" title="struct cosmic::cctk::sctk::reexports::calloop::Poll">Poll</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="enum" href="enum.Error.html" title="enum cosmic::cctk::sctk::reexports::calloop::Error">Error</a>>;
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// Provided methods
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fn <a href="#method.before_sleep" class="fn">before_sleep</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(<a class="struct" href="struct.Readiness.html" title="struct cosmic::cctk::sctk::reexports::calloop::Readiness">Readiness</a>, <a class="struct" href="struct.Token.html" title="struct cosmic::cctk::sctk::reexports::calloop::Token">Token</a>)>, <a class="enum" href="enum.Error.html" title="enum cosmic::cctk::sctk::reexports::calloop::Error">Error</a>> { ... }
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<span class="item-spacer"></span> fn <a href="#method.before_handle_events" class="fn">before_handle_events</a>(&mut self, events: <a class="struct" href="struct.EventIterator.html" title="struct cosmic::cctk::sctk::reexports::calloop::EventIterator">EventIterator</a><'_>) { ... }
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}</code></pre><span class="item-info"><div class="stab portability">Available on <strong>crate feature <code>wayland</code> and Linux</strong> only.</div></span><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Trait representing an event source</p>
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<p>This is the trait you need to implement if you wish to create your own
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calloop-compatible event sources.</p>
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<p>The 3 associated types define the type of closure the user will need to
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provide to process events for your event source.</p>
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<p>The <code>process_events</code> method will be called when one of the FD you registered
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is ready, with the associated readiness and token.</p>
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<p>The <code>register</code>, <code>reregister</code> and <code>unregister</code> methods are plumbing to let your
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source register itself with the polling system. See their documentation for details.</p>
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<p>In case your event source needs to do some special processing before or after a
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polling session occurs (to prepare the underlying source for polling, and cleanup
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after that), you can override <a href="trait.EventSource.html#associatedconstant.NEEDS_EXTRA_LIFECYCLE_EVENTS" title="associated constant cosmic::cctk::sctk::reexports::calloop::EventSource::NEEDS_EXTRA_LIFECYCLE_EVENTS"><code>NEEDS_EXTRA_LIFECYCLE_EVENTS</code></a> to <code>true</code>.
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For all sources for which that constant is <code>true</code>, the methods <a href="trait.EventSource.html#method.before_sleep" title="method cosmic::cctk::sctk::reexports::calloop::EventSource::before_sleep"><code>before_sleep</code></a> and
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<a href="trait.EventSource.html#method.before_handle_events" title="method cosmic::cctk::sctk::reexports::calloop::EventSource::before_handle_events"><code>before_handle_events</code></a> will be called.
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<a href="trait.EventSource.html#method.before_sleep" title="method cosmic::cctk::sctk::reexports::calloop::EventSource::before_sleep"><code>before_sleep</code></a> is called before the polling system performs a poll operation.
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<a href="trait.EventSource.html#method.before_handle_events" title="method cosmic::cctk::sctk::reexports::calloop::EventSource::before_handle_events"><code>before_handle_events</code></a> is called before any process_events methods have been called.
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This means that during <code>process_events</code> you can assume that all cleanup has occured on
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all sources.</p>
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</div></details><h2 id="provided-associated-consts" class="section-header">Provided Associated Constants<a href="#provided-associated-consts" class="anchor">§</a></h2><div class="methods"><details class="toggle" open><summary><section id="associatedconstant.NEEDS_EXTRA_LIFECYCLE_EVENTS" class="method"><h4 class="code-header">const <a href="#associatedconstant.NEEDS_EXTRA_LIFECYCLE_EVENTS" class="constant">NEEDS_EXTRA_LIFECYCLE_EVENTS</a>: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a> = false</h4></section></summary><div class="docblock"><p>Whether this source needs to be sent the <a href="trait.EventSource.html#method.before_sleep" title="method cosmic::cctk::sctk::reexports::calloop::EventSource::before_sleep"><code>EventSource::before_sleep</code></a>
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and <a href="trait.EventSource.html#method.before_handle_events" title="method cosmic::cctk::sctk::reexports::calloop::EventSource::before_handle_events"><code>EventSource::before_handle_events</code></a> notifications. These are opt-in because
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they require more expensive checks, and almost all sources will not need these notifications</p>
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</div></details></div><h2 id="required-associated-types" class="section-header">Required Associated Types<a href="#required-associated-types" class="anchor">§</a></h2><div class="methods"><details class="toggle" open><summary><section id="associatedtype.Event" class="method"><h4 class="code-header">type <a href="#associatedtype.Event" class="associatedtype">Event</a></h4></section></summary><div class="docblock"><p>The type of events generated by your source.</p>
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</div></details><details class="toggle" open><summary><section id="associatedtype.Metadata" class="method"><h4 class="code-header">type <a href="#associatedtype.Metadata" class="associatedtype">Metadata</a></h4></section></summary><div class="docblock"><p>Some metadata of your event source</p>
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<p>This is typically useful if your source contains some internal state that
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the user may need to interact with when processing events. The user callback
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will receive a <code>&mut Metadata</code> reference.</p>
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<p>Set to <code>()</code> if not needed.</p>
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</div></details><details class="toggle" open><summary><section id="associatedtype.Ret" class="method"><h4 class="code-header">type <a href="#associatedtype.Ret" class="associatedtype">Ret</a></h4></section></summary><div class="docblock"><p>The return type of the user callback</p>
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<p>If the user needs to return some value back to your event source once its
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processing is finshed (to indicate success or failure for example), you can
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specify it using this type.</p>
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<p>Set to <code>()</code> if not needed.</p>
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</div></details><details class="toggle" open><summary><section id="associatedtype.Error" class="method"><h4 class="code-header">type <a href="#associatedtype.Error" class="associatedtype">Error</a>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><<a class="struct" href="../client/backend/smallvec/alloc/boxed/struct.Box.html" title="struct cosmic::cctk::sctk::reexports::client::backend::smallvec::alloc::boxed::Box">Box</a><dyn <a class="trait" href="https://doc.rust-lang.org/nightly/core/error/trait.Error.html" title="trait core::error::Error">Error</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>>></h4></section></summary><div class="docblock"><p>The error type returned from
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<a href="trait.EventSource.html#tymethod.process_events" title="method calloop::sources::EventSource::process_events::process_events"><code>process_events()</code></a> (not the user callback!).</p>
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</div></details></div><h2 id="required-methods" class="section-header">Required Methods<a href="#required-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="tymethod.process_events" class="method"><h4 class="code-header">fn <a href="#tymethod.process_events" class="fn">process_events</a><F>(
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&mut self,
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readiness: <a class="struct" href="struct.Readiness.html" title="struct cosmic::cctk::sctk::reexports::calloop::Readiness">Readiness</a>,
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token: <a class="struct" href="struct.Token.html" title="struct cosmic::cctk::sctk::reexports::calloop::Token">Token</a>,
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callback: F,
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) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="enum.PostAction.html" title="enum cosmic::cctk::sctk::reexports::calloop::PostAction">PostAction</a>, Self::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Error" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Error">Error</a>><div class="where">where
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F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(Self::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Event" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Event">Event</a>, &mut Self::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Metadata" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Metadata">Metadata</a>) -> Self::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Ret" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Ret">Ret</a>,</div></h4></section></summary><div class="docblock"><p>Process any relevant events</p>
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<p>This method will be called every time one of the FD you registered becomes
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ready, including the readiness details and the associated token.</p>
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<p>Your event source will then do some processing of the file descriptor(s) to generate
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events, and call the provided <code>callback</code> for each one of them.</p>
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<p>You should ensure you drained the file descriptors of their events, especially if using
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edge-triggered mode.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.register" class="method"><h4 class="code-header">fn <a href="#tymethod.register" class="fn">register</a>(
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&mut self,
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poll: &mut <a class="struct" href="struct.Poll.html" title="struct cosmic::cctk::sctk::reexports::calloop::Poll">Poll</a>,
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token_factory: &mut <a class="struct" href="struct.TokenFactory.html" title="struct cosmic::cctk::sctk::reexports::calloop::TokenFactory">TokenFactory</a>,
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) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="enum" href="enum.Error.html" title="enum cosmic::cctk::sctk::reexports::calloop::Error">Error</a>></h4></section></summary><div class="docblock"><p>Register yourself to this poll instance</p>
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<p>You should register all your relevant file descriptors to the provided <a href="struct.Poll.html" title="struct cosmic::cctk::sctk::reexports::calloop::Poll"><code>Poll</code></a>
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using its <a href="struct.Poll.html#method.register" title="struct cosmic::cctk::sctk::reexports::calloop::Poll"><code>Poll::register</code></a> method.</p>
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<p>If you need to register more than one file descriptor, you can change the
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<code>sub_id</code> field of the <a href="struct.Token.html" title="struct cosmic::cctk::sctk::reexports::calloop::Token"><code>Token</code></a> to differentiate between them.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.reregister" class="method"><h4 class="code-header">fn <a href="#tymethod.reregister" class="fn">reregister</a>(
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&mut self,
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poll: &mut <a class="struct" href="struct.Poll.html" title="struct cosmic::cctk::sctk::reexports::calloop::Poll">Poll</a>,
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token_factory: &mut <a class="struct" href="struct.TokenFactory.html" title="struct cosmic::cctk::sctk::reexports::calloop::TokenFactory">TokenFactory</a>,
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) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="enum" href="enum.Error.html" title="enum cosmic::cctk::sctk::reexports::calloop::Error">Error</a>></h4></section></summary><div class="docblock"><p>Re-register your file descriptors</p>
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<p>Your should update the registration of all your relevant file descriptor to
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the provided <a href="struct.Poll.html" title="struct cosmic::cctk::sctk::reexports::calloop::Poll"><code>Poll</code></a> using its <a href="struct.Poll.html#method.reregister" title="struct cosmic::cctk::sctk::reexports::calloop::Poll"><code>Poll::reregister</code></a>,
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if necessary.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.unregister" class="method"><h4 class="code-header">fn <a href="#tymethod.unregister" class="fn">unregister</a>(&mut self, poll: &mut <a class="struct" href="struct.Poll.html" title="struct cosmic::cctk::sctk::reexports::calloop::Poll">Poll</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="enum" href="enum.Error.html" title="enum cosmic::cctk::sctk::reexports::calloop::Error">Error</a>></h4></section></summary><div class="docblock"><p>Unregister your file descriptors</p>
|
||
|
|
<p>You should unregister all your file descriptors from this <a href="struct.Poll.html" title="struct cosmic::cctk::sctk::reexports::calloop::Poll"><code>Poll</code></a> using its
|
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<a href="struct.Poll.html#method.unregister" title="struct cosmic::cctk::sctk::reexports::calloop::Poll"><code>Poll::unregister</code></a> method.</p>
|
||
|
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</div></details></div><h2 id="provided-methods" class="section-header">Provided Methods<a href="#provided-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="method.before_sleep" class="method"><h4 class="code-header">fn <a href="#method.before_sleep" class="fn">before_sleep</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(<a class="struct" href="struct.Readiness.html" title="struct cosmic::cctk::sctk::reexports::calloop::Readiness">Readiness</a>, <a class="struct" href="struct.Token.html" title="struct cosmic::cctk::sctk::reexports::calloop::Token">Token</a>)>, <a class="enum" href="enum.Error.html" title="enum cosmic::cctk::sctk::reexports::calloop::Error">Error</a>></h4></section></summary><div class="docblock"><p>Notification that a single <code>poll</code> is about to begin</p>
|
||
|
|
<p>Use this to perform operations which must be done before polling,
|
||
|
|
but which may conflict with other event handlers. For example,
|
||
|
|
if polling requires a lock to be taken</p>
|
||
|
|
<p>If this returns Ok(Some), this will be treated as an event arriving in polling, and
|
||
|
|
your event handler will be called with the returned <code>Token</code> and <code>Readiness</code>.
|
||
|
|
Polling will however still occur, but with a timeout of 0, so additional events
|
||
|
|
from this or other sources may also be handled in the same iterations.
|
||
|
|
The returned <code>Token</code> must belong to this source</p>
|
||
|
|
</div></details><details class="toggle method-toggle" open><summary><section id="method.before_handle_events" class="method"><h4 class="code-header">fn <a href="#method.before_handle_events" class="fn">before_handle_events</a>(&mut self, events: <a class="struct" href="struct.EventIterator.html" title="struct cosmic::cctk::sctk::reexports::calloop::EventIterator">EventIterator</a><'_>)</h4></section></summary><div class="docblock"><p>Notification that polling is complete, and <a href="trait.EventSource.html#tymethod.process_events" title="method cosmic::cctk::sctk::reexports::calloop::EventSource::process_events"><code>EventSource::process_events</code></a> will
|
||
|
|
be called with the given events for this source. The iterator may be empty,
|
||
|
|
which indicates that no events were generated for this source</p>
|
||
|
|
<p>Please note, the iterator excludes any synthetic events returned from
|
||
|
|
<a href="trait.EventSource.html#method.before_sleep" title="method cosmic::cctk::sctk::reexports::calloop::EventSource::before_sleep"><code>EventSource::before_sleep</code></a></p>
|
||
|
|
<p>Use this to perform a cleanup before event handlers with arbitrary
|
||
|
|
code may run. This could be used to drop a lock obtained in
|
||
|
|
<a href="trait.EventSource.html#method.before_sleep" title="method cosmic::cctk::sctk::reexports::calloop::EventSource::before_sleep"><code>EventSource::before_sleep</code></a></p>
|
||
|
|
</div></details></div><h2 id="dyn-compatibility" class="section-header">Dyn Compatibility<a href="#dyn-compatibility" class="anchor">§</a></h2><div class="dyn-compatibility-info"><p>This trait is <b>not</b> <a href="https://doc.rust-lang.org/nightly/reference/items/traits.html#dyn-compatibility">dyn compatible</a>.</p><p><i>In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.</i></p></div><h2 id="foreign-impls" class="section-header">Implementations on Foreign Types<a href="#foreign-impls" class="anchor">§</a></h2><details class="toggle implementors-toggle"><summary><section id="impl-EventSource-for-%26mut+T" class="impl"><a href="#impl-EventSource-for-%26mut+T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut T</a><div class="where">where
|
||
|
|
T: <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>,</div></h3><div class="docblock"><p>Blanket implementation for exclusive references to event sources.
|
||
|
|
<a href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource"><code>EventSource</code></a> is not an object safe trait, so this does not include trait
|
||
|
|
objects.</p>
|
||
|
|
</div></section></summary><div class="impl-items"><section id="associatedconstant.NEEDS_EXTRA_LIFECYCLE_EVENTS-1" class="associatedconstant trait-impl"><a href="#associatedconstant.NEEDS_EXTRA_LIFECYCLE_EVENTS-1" class="anchor">§</a><h4 class="code-header">const <a href="#associatedconstant.NEEDS_EXTRA_LIFECYCLE_EVENTS" class="constant">NEEDS_EXTRA_LIFECYCLE_EVENTS</a>: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a> = T::NEEDS_EXTRA_LIFECYCLE_EVENTS</h4></section><section id="associatedtype.Event-1" class="associatedtype trait-impl"><a href="#associatedtype.Event-1" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Event" class="associatedtype">Event</a> = <T as <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>>::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Event" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Event">Event</a></h4></section><section id="associatedtype.Metadata-1" class="associatedtype trait-impl"><a href="#associatedtype.Metadata-1" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Metadata" class="associatedtype">Metadata</a> = <T as <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>>::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Metadata" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Metadata">Metadata</a></h4></section><section id="associatedtype.Ret-1" class="associatedtype trait-impl"><a href="#associatedtype.Ret-1" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Ret" class="associatedtype">Ret</a> = <T as <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>>::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Ret" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Ret">Ret</a></h4></section><section id="associatedtype.Error-1" class="associatedtype trait-impl"><a href="#associatedtype.Error-1" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Error" class="associatedtype">Error</a> = <T as <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>>::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Error" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Error">Error</a></h4></section><section id="method.process_events" class="method trait-impl"><a href="#method.process_events" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.process_events" class="fn">process_events</a><F>(
|
||
|
|
&mut self,
|
||
|
|
readiness: <a class="struct" href="struct.Readiness.html" title="struct cosmic::cctk::sctk::reexports::calloop::Readiness">Readiness</a>,
|
||
|
|
token: <a class="struct" href="struct.Token.html" title="struct cosmic::cctk::sctk::reexports::calloop::Token">Token</a>,
|
||
|
|
callback: F,
|
||
|
|
) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="enum.PostAction.html" title="enum cosmic::cctk::sctk::reexports::calloop::PostAction">PostAction</a>, <<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut T</a> as <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>>::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Error" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Error">Error</a>><div class="where">where
|
||
|
|
F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut T</a> as <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>>::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Event" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Event">Event</a>, &mut <<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut T</a> as <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>>::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Metadata" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Metadata">Metadata</a>) -> <<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut T</a> as <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>>::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Ret" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Ret">Ret</a>,</div></h4></section><section id="method.register" class="method trait-impl"><a href="#method.register" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.register" class="fn">register</a>(
|
||
|
|
&mut self,
|
||
|
|
poll: &mut <a class="struct" href="struct.Poll.html" title="struct cosmic::cctk::sctk::reexports::calloop::Poll">Poll</a>,
|
||
|
|
token_factory: &mut <a class="struct" href="struct.TokenFactory.html" title="struct cosmic::cctk::sctk::reexports::calloop::TokenFactory">TokenFactory</a>,
|
||
|
|
) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="enum" href="enum.Error.html" title="enum cosmic::cctk::sctk::reexports::calloop::Error">Error</a>></h4></section><section id="method.reregister" class="method trait-impl"><a href="#method.reregister" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.reregister" class="fn">reregister</a>(
|
||
|
|
&mut self,
|
||
|
|
poll: &mut <a class="struct" href="struct.Poll.html" title="struct cosmic::cctk::sctk::reexports::calloop::Poll">Poll</a>,
|
||
|
|
token_factory: &mut <a class="struct" href="struct.TokenFactory.html" title="struct cosmic::cctk::sctk::reexports::calloop::TokenFactory">TokenFactory</a>,
|
||
|
|
) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="enum" href="enum.Error.html" title="enum cosmic::cctk::sctk::reexports::calloop::Error">Error</a>></h4></section><section id="method.unregister" class="method trait-impl"><a href="#method.unregister" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.unregister" class="fn">unregister</a>(&mut self, poll: &mut <a class="struct" href="struct.Poll.html" title="struct cosmic::cctk::sctk::reexports::calloop::Poll">Poll</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="enum" href="enum.Error.html" title="enum cosmic::cctk::sctk::reexports::calloop::Error">Error</a>></h4></section><section id="method.before_sleep-1" class="method trait-impl"><a href="#method.before_sleep-1" class="anchor">§</a><h4 class="code-header">fn <a href="#method.before_sleep" class="fn">before_sleep</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(<a class="struct" href="struct.Readiness.html" title="struct cosmic::cctk::sctk::reexports::calloop::Readiness">Readiness</a>, <a class="struct" href="struct.Token.html" title="struct cosmic::cctk::sctk::reexports::calloop::Token">Token</a>)>, <a class="enum" href="enum.Error.html" title="enum cosmic::cctk::sctk::reexports::calloop::Error">Error</a>></h4></section><section id="method.before_handle_events-1" class="method trait-impl"><a href="#method.before_handle_events-1" class="anchor">§</a><h4 class="code-header">fn <a href="#method.before_handle_events" class="fn">before_handle_events</a>(&mut self, events: <a class="struct" href="struct.EventIterator.html" title="struct cosmic::cctk::sctk::reexports::calloop::EventIterator">EventIterator</a><'_>)</h4></section></div></details><h2 id="implementors" class="section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"><details class="toggle implementors-toggle"><summary><section id="impl-EventSource-for-ReadPipe" class="impl"><a href="#impl-EventSource-for-ReadPipe" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a> for <a class="struct" href="../../data_device_manager/struct.ReadPipe.html" title="struct cosmic::cctk::sctk::data_device_manager::ReadPipe">ReadPipe</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Event-2" class="associatedtype trait-impl"><a href="#associatedtype.Event-2" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Event" class="associatedtype">Event</a> = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a></h4></section><section id="associatedtype.Error-2" class="associatedtype trait-impl"><a href="#associatedtype.Error-2" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Error" class="associatedtype">Error</a> = <a class="struct" href="../../../../iced/daemon/program/graphics/futures/futures/io/struct.Error.html" title="struct cosmic::iced::daemon::program::graphics::futures::futures::io::Error">Error</a></h4></section><section id="associatedtype.Metadata-2" class="associatedtype trait-impl"><a href="#associatedtype.Metadata-2" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Metadata" class="associatedtype">Metadata</a> = <a class="struct" href="generic/struct.NoIoDrop.html" title="struct cosmic:
|
||
|
|
F: <a class="trait" href="https://doc.rust-lang.org/nightly/std/os/fd/owned/trait.AsFd.html" title="trait std::os::fd::owned::AsFd">AsFd</a>,
|
||
|
|
E: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><<a class="struct" href="../client/backend/smallvec/alloc/boxed/struct.Box.html" title="struct cosmic::cctk::sctk::reexports::client::backend::smallvec::alloc::boxed::Box">Box</a><dyn <a class="trait" href="https://doc.rust-lang.org/nightly/core/error/trait.Error.html" title="trait core::error::Error">Error</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>>>,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.Event-6" class="associatedtype trait-impl"><a href="#associatedtype.Event-6" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Event" class="associatedtype">Event</a> = <a class="struct" href="struct.Readiness.html" title="struct cosmic::cctk::sctk::reexports::calloop::Readiness">Readiness</a></h4></section><section id="associatedtype.Metadata-6" class="associatedtype trait-impl"><a href="#associatedtype.Metadata-6" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Metadata" class="associatedtype">Metadata</a> = <a class="struct" href="generic/struct.NoIoDrop.html" title="struct cosmic::cctk::sctk::reexports::calloop::generic::NoIoDrop">NoIoDrop</a><F></h4></section><section id="associatedtype.Ret-6" class="associatedtype trait-impl"><a href="#associatedtype.Ret-6" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Ret" class="associatedtype">Ret</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="enum.PostAction.html" title="enum cosmic::cctk::sctk::reexports::calloop::PostAction">PostAction</a>, E></h4></section><section id="associatedtype.Error-6" class="associatedtype trait-impl"><a href="#associatedtype.Error-6" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Error" class="associatedtype">Error</a> = E</h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-EventSource-for-Box%3CT%3E" class="impl"><a href="#impl-EventSource-for-Box%3CT%3E" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a> for <a class="struct" href="../client/backend/smallvec/alloc/boxed/struct.Box.html" title="struct cosmic::cctk::sctk::reexports::client::backend::smallvec::alloc::boxed::Box">Box</a><T><div class="where">where
|
||
|
|
T: <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>,</div></h3><div class="docblock"><p>Blanket implementation for boxed event sources. <a href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource"><code>EventSource</code></a> is not an
|
||
|
|
object safe trait, so this does not include trait objects.</p>
|
||
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</div></section></summary><div class="impl-items"><section id="associatedconstant.NEEDS_EXTRA_LIFECYCLE_EVENTS-3" class="associatedconstant trait-impl"><a href="#associatedconstant.NEEDS_EXTRA_LIFECYCLE_EVENTS-3" class="anchor">§</a><h4 class="code-header">const <a href="#associatedconstant.NEEDS_EXTRA_LIFECYCLE_EVENTS" class="constant">NEEDS_EXTRA_LIFECYCLE_EVENTS</a>: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a> = T::NEEDS_EXTRA_LIFECYCLE_EVENTS</h4></section><section id="associatedtype.Event-7" class="associatedtype trait-impl"><a href="#associatedtype.Event-7" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Event" class="associatedtype">Event</a> = <T as <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>>::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Event" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Event">Event</a></h4></section><section id="associatedtype.Metadata-7" class="associatedtype trait-impl"><a href="#associatedtype.Metadata-7" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Metadata" class="associatedtype">Metadata</a> = <T as <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>>::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Metadata" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Metadata">Metadata</a></h4></section><section id="associatedtype.Ret-7" class="associatedtype trait-impl"><a href="#associatedtype.Ret-7" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Ret" class="associatedtype">Ret</a> = <T as <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>>::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Ret" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Ret">Ret</a></h4></section><section id="associatedtype.Error-7" class="associatedtype trait-impl"><a href="#associatedtype.Error-7" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Error" class="associatedtype">Error</a> = <T as <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>>::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Error" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Error">Error</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-EventSource-for-Channel%3CT%3E" class="impl"><a href="#impl-EventSource-for-Channel%3CT%3E" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a> for <a class="struct" href="channel/struct.Channel.html" title="struct cosmic::cctk::sctk::reexports::calloop::channel::Channel">Channel</a><T></h3></section></summary><div class="impl-items"><section id="associatedtype.Event-8" class="associatedtype trait-impl"><a href="#associatedtype.Event-8" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Event" class="associatedtype">Event</a> = <a class="enum" href="channel/enum.Event.html" title="enum cosmic::cctk::sctk::reexports::calloop::channel::Event">Event</a><T></h4></section><section id="associatedtype.Metadata-8" class="associatedtype trait-impl"><a href="#associatedtype.Metadata-8" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Metadata" class="associatedtype">Metadata</a> = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a></h4></section><section id="associatedtype.Ret-8" class="associatedtype trait-impl"><a href="#associatedtype.Ret-8" class="anchor">§</a><h4 class="code-heade
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T: <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.Event-9" class="associatedtype trait-impl"><a href="#associatedtype.Event-9" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Event" class="associatedtype">Event</a> = <T as <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>>::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Event" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Event">Event</a></h4></section><section id="associatedtype.Metadata-9" class="associatedtype trait-impl"><a href="#associatedtype.Metadata-9" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Metadata" class="associatedtype">Metadata</a> = <T as <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>>::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Metadata" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Metadata">Metadata</a></h4></section><section id="associatedtype.Ret-9" class="associatedtype trait-impl"><a href="#associatedtype.Ret-9" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Ret" class="associatedtype">Ret</a> = <T as <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>>::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Ret" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Ret">Ret</a></h4></section><section id="associatedtype.Error-9" class="associatedtype trait-impl"><a href="#associatedtype.Error-9" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Error" class="associatedtype">Error</a> = <T as <a class="trait" href="trait.EventSource.html" title="trait cosmic::cctk::sctk::reexports::calloop::EventSource">EventSource</a>>::<a class="associatedtype" href="trait.EventSource.html#associatedtype.Error" title="type cosmic::cctk::sctk::reexports::calloop::EventSource::Error">Error</a></h4></section></div></details></div><script src="../../../../../trait.impl/calloop/sources/trait.EventSource.js" data-ignore-extern-crates="smithay_client_toolkit,calloop,alloc,calloop_wayland_source" async></script></section></div></main></body></html>
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