<!DOCTYPE html><htmllang="en"><head><metacharset="utf-8"><metaname="viewport"content="width=device-width, initial-scale=1.0"><metaname="generator"content="rustdoc"><metaname="description"content="API documentation for the Rust `Transition` enum in crate `widgetry`."><metaname="keywords"content="rust, rustlang, rust-lang, Transition"><title>widgetry::app_state::Transition - Rust</title><linkrel="stylesheet"type="text/css"href="../../normalize.css"><linkrel="stylesheet"type="text/css"href="../../rustdoc.css"id="mainThemeStyle"><linkrel="stylesheet"type="text/css"href="../../light.css"id="themeStyle"><linkrel="stylesheet"type="text/css"href="../../dark.css"disabled><linkrel="stylesheet"type="text/css"href="../../ayu.css"disabled><scriptsrc="../../storage.js"></script><noscript><linkrel="stylesheet"href="../../noscript.css"></noscript><linkrel="shortcut icon"href="../../favicon.ico"><styletype="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><bodyclass="rustdoc enum"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><navclass="sidebar"><divclass="sidebar-menu">☰</div><ahref='../../widgetry/index.html'><divclass='logo-container rust-logo'><imgsrc='../../rust-logo.png'alt='logo'></div></a><pclass='location'>Enum Transition</p><divclass="sidebar-elems"><divclass="block items"><aclass="sidebar-title"href="#variants">Variants</a><divclass="sidebar-links"><ahref="#variant.Clear">Clear</a><ahref="#variant.Keep">Keep</a><ahref="#variant.KeepWithMouseover">KeepWithMouseover</a><ahref="#variant.ModifyState">ModifyState</a><ahref="#variant.Multi">Multi</a><ahref="#variant.Pop">Pop</a><ahref="#variant.Push">Push</a><ahref="#variant.Replace">Replace</a><ahref="#variant.ReplaceWithData">ReplaceWithData</a></div><aclass="sidebar-title"href="#synthetic-implementations">Auto Trait Implementations</a><divclass="sidebar-links"><ahref="#impl-RefUnwindSafe">!RefUnwindSafe</a><ahref="#impl-Send">!Send</a><ahref="#impl-Sync">!Sync</a><ahref="#impl-Unpin">Unpin</a><ahref="#impl-UnwindSafe">!UnwindSafe</a></div><aclass="sidebar-title"href="#blanket-implementations">Blanket Implementations</a><divclass="sidebar-links"><ahref="#impl-Any">Any</a><ahref="#impl-Borrow%3CT%3E">Borrow<T></a><ahref="#impl-BorrowMut%3CT%3E">BorrowMut<T></a><ahref="#impl-Downcast">Downcast</a><ahref="#impl-From%3CT%3E">From<T></a><ahref="#impl-Into%3CU%3E">Into<U></a><ahref="#impl-Same%3CT%3E">Same<T></a><ahref="#impl-TryFrom%3CU%3E">TryFrom<U></a><ahref="#impl-TryInto%3CU%3E">TryInto<U></a><ahref="#impl-VZip%3CV%3E">VZip<V></a></div></div><pclass='location'><ahref='../index.html'>widgetry</a>::<wbr><ahref='index.html'>app_state</a></p><script>window.sidebarCurrent={name:'Transition',ty:'enum',relpath:''};</script><scriptdefersrc="sidebar-items.js"></script></div></nav><divclass="theme-picker"><buttonid="theme-picker"aria-label="Pick another theme!"><imgsrc="../../brush.svg"width="18"alt="Pick another theme!"></button><divid="theme-choices"></div></div><scriptsrc="../../theme.js"></script><navclass="sub"><formclass="search-form"><divclass="search-container"><div><selectid="crate-search"><optionvalue="All crates">All crates</option></select><inputclass="search-input"name="search"disabledautocomplete="off"spellcheck="false"placeholder="Click or press ‘S’ to search, ‘?’ for more options…"type="search"></div><spanclass="help-button">?</span>
<divid="variant.Keep"class="variant small-section-header"><ahref="#variant.Keep"class="anchor field"></a><code>Keep</code></div><divclass='docblock'><p>Don't do anything, keep the current state as the active one</p>
</div><divid="variant.KeepWithMouseover"class="variant small-section-header"><ahref="#variant.KeepWithMouseover"class="anchor field"></a><code>KeepWithMouseover</code></div><divclass='docblock'><p>Keep the current state as the active one, but immediately call <code>event</code> again with a mouse
moved event</p>
</div><divid="variant.Pop"class="variant small-section-header"><ahref="#variant.Pop"class="anchor field"></a><code>Pop</code></div><divclass='docblock'><p>Destroy the current state, and resume from the previous one</p>
</div><divid="variant.ModifyState"class="variant small-section-header"><ahref="#variant.ModifyState"class="anchor field"></a><code>ModifyState(<aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html"title="struct alloc::boxed::Box">Box</a><dyn <aclass="trait"href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html"title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html"title="struct alloc::boxed::Box">Box</a><dyn <aclass="trait"href="../../widgetry/app_state/trait.State.html"title="trait widgetry::app_state::State">State</a><A>>, &mut <aclass="struct"href="../../widgetry/struct.EventCtx.html"title="struct widgetry::EventCtx">EventCtx</a><'_>, <aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>A)>)</code></div><divclass='docblock'><p>If a state needs to pass data back to its parent, use this. In the callback, you have to
downcast the previous state to populate it with data.</p>
</div><divid="variant.ReplaceWithData"class="variant small-section-header"><ahref="#variant.ReplaceWithData"class="anchor field"></a><code>ReplaceWithData(<aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html"title="struct alloc::boxed::Box">Box</a><dyn <aclass="trait"href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html"title="trait core::ops::function::FnOnce">FnOnce</a>(<aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html"title="struct alloc::boxed::Box">Box</a><dyn <aclass="trait"href="../../widgetry/app_state/trait.State.html"title="trait widgetry::app_state::State">State</a><A>>, &mut <aclass="struct"href="../../widgetry/struct.EventCtx.html"title="struct widgetry::EventCtx">EventCtx</a><'_>, <aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>A) -><aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html"title="struct alloc::vec::Vec">Vec</a><<aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html"title="struct alloc::boxed::Box">Box</a><dyn <aclass="trait"href="../../widgetry/app_state/trait.State.html"title="trait widgetry::app_state::State">State</a><A>>>>)</code></div><divid="variant.Push"class="variant small-section-header"><ahref="#variant.Push"class="anchor field"></a><code>Push(<aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html"title="struct alloc::boxed::Box">Box</a><dyn <aclass="trait"href="../../widgetry/app_state/trait.State.html"title="trait widgetry::app_state::State">State</a><A>>)</code></div><divclass='docblock'><p>Push a new active state on the top of the stack.</p>
</div><divid="variant.Replace"class="variant small-section-header"><ahref="#variant.Replace"class="anchor field"></a><code>Replace(<aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html"title="struct alloc::boxed::Box">Box</a><dyn <aclass="trait"href="../../widgetry/app_state/trait.State.html"title="trait widgetry::app_state::State">State</a><A>>)</code></div><divclass='docblock'><p>Replace the current state with a new one. Equivalent to Pop, then Push.</p>
</div><divid="variant.Clear"class="variant small-section-header"><ahref="#variant.Clear"class="anchor field"></a><code>Clear(<aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html"title="struct alloc::vec::Vec">Vec</a><<aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html"title="struct alloc::boxed::Box">Box</a><dyn <aclass="trait"href="../../widgetry/app_state/trait.State.html"title="trait widgetry::app_state::State">State</a><A>>>)</code></div><divclass='docblock'><p>Replace the entire stack of states with this stack.</p>
</div><divid="variant.Multi"class="variant small-section-header"><ahref="#variant.Multi"class="anchor field"></a><code>Multi(<aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html"title="struct alloc::vec::Vec">Vec</a><<aclass="enum"href="../../widgetry/enum.Transition.html"title="enum widgetry::Transition">Transition</a><A>>)</code></div><divclass='docblock'><p>Execute a sequence of transitions in order.</p>
</div><h2id='synthetic-implementations'class='small-section-header'>Auto Trait Implementations<ahref='#synthetic-implementations'class='anchor'></a></h2><divid='synthetic-implementations-list'><h3id='impl-RefUnwindSafe'class='impl'><codeclass='in-band'>impl<A> !<aclass="trait"href="https://doc.rust-lang.org/nightly/std/panic/trait.RefUnwindSafe.html"title="trait std::panic::RefUnwindSafe">RefUnwindSafe</a> for <aclass="enum"href="../../widgetry/enum.Transition.html"title="enum widgetry::Transition">Transition</a><A></code><ahref='#impl-RefUnwindSafe'class='anchor'></a></h3><divclass='impl-items'></div><h3id='impl-Send'class='impl'><codeclass='in-band'>impl<A> !<aclass="trait"href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html"title="trait core::marker::Send">Send</a> for <aclass="enum"href="../../widgetry/enum.Transition.html"title="enum widgetry::Transition">Transition</a><A></code><ahref='#impl-Send'class='anchor'></a></h3><divclass='impl-items'></div><h3id='impl-Sync'class='impl'><codeclass='in-band'>impl<A> !<aclass="trait"href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html"title="trait core::marker::Sync">Sync</a> for <aclass="enum"href="../../widgetry/enum.Transition.html"title="enum widgetry::Transition">Transition</a><A></code><ahref='#impl-Sync'class='anchor'></a></h3><divclass='impl-items'></div><h3id='impl-Unpin'class='impl'><codeclass='in-band'>impl<A><aclass="trait"href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html"title="trait core::marker::Unpin">Unpin</a> for <aclass="enum"href="../../widgetry/enum.Transition.html"title="enum widgetry::Transition">Transition</a><A></code><ahref='#impl-Unpin'class='anchor'></a></h3><divclass='impl-items'></div><h3id='impl-UnwindSafe'class='impl'><codeclass='in-band'>impl<A> !<aclass="trait"href="https://doc.rust-lang.org/nightly/std/panic/trait.UnwindSafe.html"title="trait std::panic::UnwindSafe">UnwindSafe</a> for <aclass="enum"href="../../widgetry/enum.Transition.html"title="enum widgetry::Transition">Transition</a><A></code><ahref='#impl-UnwindSafe'class='anchor'></a></h3><divclass='impl-items'></div></div><h2id='blanket-implementations'class='small-section-header'>Blanket Implementations<ahref='#blanket-implementations'class='anchor'></a></h2><divid='blanket-implementations-list'><h3id='impl-Any'class='impl'><codeclass='in-band'>impl<T><aclass="trait"href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html"title="trait core::any::Any">Any</a> for T <spanclass="where fmt-newline">where<br> T: 'static + ?<aclass="trait"href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html"title="trait core::marker::Sized">Sized</a>, </span></code><ahref='#impl-Any'class='anchor'></a><aclass='srclink'href='https://doc.rust-lang.org/nightly/src/core/any.rs.html#108-112'title='goto source code'>[src]</a></h3><divclass='impl-items'><h4id='method.type_id'class="method hidden"><code>fn <ahref='https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id'class='fnname'>type_id</a>(&self) -><aclass="struct"href="https://doc.rust-lang.org/nightly/core/any/struct.TypeId.html"title="struct core::any::TypeId">TypeId</a></code><aclass='srclink'href='https://doc.rust-lang.org/nightly/src/core/any.rs.html#109-111'title='goto source code'>[src]</a></h4><divclass='docblock hidden'><p>Gets the <code>TypeId</code> of <code>self</code>. <ahref="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id">Read more</a></p>
</div></div><h3id='impl-Downcast'class='impl'><codeclass='in-band'>impl<T> Downcast for T <spanclass="where fmt-newline">where<br> T: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html"title="trait core::any::Any">Any</a>, </span></code><ahref='#impl-Downcast'class='anchor'></a></h3><divclass='impl-items'><h4id='method.into_any'class="method hidden"><code>fn <ahref='#method.into_any'class='fnname'>into_any</a>(self: <aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html"title="struct alloc::boxed::Box">Box</a><T>) -><aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html"title="struct alloc::boxed::Box">Box</a><dyn <aclass="trait"href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html"title="trait core::any::Any">Any</a> + 'static></code></h4><divclass='docblock hidden'><p>Convert <code>Box<dyn Trait></code> (where <code>Trait: Downcast</code>) to <code>Box<dyn Any></code>. <code>Box<dyn Any></code> can then be further <code>downcast</code> into <code>Box<ConcreteType></code> where <code>ConcreteType</code> implements <code>Trait</code>. <ahref="#tymethod.into_any">Read more</a></p>
</div><h4id='method.into_any_rc'class="method hidden"><code>fn <ahref='#method.into_any_rc'class='fnname'>into_any_rc</a>(self: <aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/rc/struct.Rc.html"title="struct alloc::rc::Rc">Rc</a><T>) -><aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/rc/struct.Rc.html"title="struct alloc::rc::Rc">Rc</a><dyn <aclass="trait"href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html"title="trait core::any::Any">Any</a> + 'static></code></h4><divclass='docblock hidden'><p>Convert <code>Rc<Trait></code> (where <code>Trait: Downcast</code>) to <code>Rc<Any></code>. <code>Rc<Any></code> can then be further <code>downcast</code> into <code>Rc<ConcreteType></code> where <code>ConcreteType</code> implements <code>Trait</code>. <ahref="#tymethod.into_any_rc">Read more</a></p>
</div><h4id='method.as_any'class="method hidden"><code>fn <ahref='#method.as_any'class='fnname'>as_any</a>(&self) ->&(dyn <aclass="trait"href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html"title="trait core::any::Any">Any</a> + 'static)</code></h4><divclass='docblock hidden'><p>Convert <code>&Trait</code> (where <code>Trait: Downcast</code>) to <code>&Any</code>. This is needed since Rust cannot generate <code>&Any</code>'s vtable from <code>&Trait</code>'s. <ahref="#tymethod.as_any">Read more</a></p>
</div><h4id='method.as_any_mut'class="method hidden"><code>fn <ahref='#method.as_any_mut'class='fnname'>as_any_mut</a>(&mut self) ->&mut (dyn <aclass="trait"href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html"title="trait core::any::Any">Any</a> + 'static)</code></h4><divclass='docblock hidden'><p>Convert <code>&mut Trait</code> (where <code>Trait: Downcast</code>) to <code>&Any</code>. This is needed since Rust cannot generate <code>&mut Any</code>'s vtable from <code>&mut Trait</code>'s. <ahref="#tymethod.as_any_mut">Read more</a></p>
</div></div><h3id='impl-Same%3CT%3E'class='impl'><codeclass='in-band'>impl<T> Same<T> for T</code><ahref='#impl-Same%3CT%3E'class='anchor'></a></h3><divclass='impl-items'><h4id='associatedtype.Output'class="type"><code>type <ahref='#associatedtype.Output'class="type">Output</a> = T</code></h4><divclass='docblock'><p>Should always be <code>Self</code></p>
</div></div><h3id='impl-TryFrom%3CU%3E'class='impl'><codeclass='in-band'>impl<T, U><aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><U> for T <spanclass="where fmt-newline">where<br> U: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html"title="trait core::convert::Into">Into</a><T>, </span></code><ahref='#impl-TryFrom%3CU%3E'class='anchor'></a><aclass='srclink'href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#607-616'title='goto source code'>[src]</a></h3><divclass='impl-items'><h4id='associatedtype.Error'class="type"><code>type <ahref='https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error'class="type">Error</a> = <aclass="enum"href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html"title="enum core::convert::Infallible">Infallible</a></code></h4><divclass='docblock'><p>The type returned in the event of a conversion error.</p>
</div><h4id='method.try_from'class="method hidden"><code>fn <ahref='https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from'class='fnname'>try_from</a>(value: U) -><aclass="enum"href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html"title="enum core::result::Result">Result</a><T, <T as <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><U>>::<aclass="type"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></code><aclass='srclink'href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#613-615'title='goto source code'>[src]</a></h4><divclass='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3id='impl-TryInto%3CU%3E'class='impl'><codeclass='in-band'>impl<T, U><aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html"title="trait core::convert::TryInto">TryInto</a><U> for T <spanclass="where fmt-newline">where<br> U: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>, </span></code><ahref='#impl-TryInto%3CU%3E'class='anchor'></a><aclass='srclink'href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#593-602'title='goto source code'>[src]</a></h3><divclass='impl-items'><h4id='associatedtype.Error-1'class="type"><code>type <ahref='https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error'class="type">Error</a> = <U as <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="type"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a></code></h4><divclass='docblock'><p>The type returned in the event of a conversion error.</p>
</div><h4id='method.try_into'class="method hidden"><code>fn <ahref='https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into'class='fnname'>try_into</a>(self) -><aclass="enum"href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html"title="enum core::result::Result">Result</a><U, <U as <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="type"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></code><aclass='srclink'href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#599-601'title='goto source code'>[src]</a></h4><divclass='docblock hidden'><p>Performs the conversion.</p>
