<!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="Source of the Rust file `game&#x2F;src&#x2F;devtools&#x2F;kml.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>kml.rs - source</title><link rel="stylesheet" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../light.css"  id="themeStyle"><link rel="stylesheet" type="text/css" href="../../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../../ayu.css" disabled ><script id="default-settings" ></script><script src="../../../storage.js"></script><script src="../../../crates.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"><style type="text/css">#crate-search{background-image:url("../../../down-arrow.svg");}</style></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu" role="button">&#9776;</div><a href='../../../game/index.html'><div class='logo-container rust-logo'><img src='../../../rust-logo.png' alt='logo'></div></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../../../brush.svg"></button><div id="theme-choices" role="menu"></div></div><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../../settings.html" title="settings"><img width="18" height="18" alt="Change settings" src="../../../wheel.svg"></a></div></form></nav><section id="main" class="content"><div class="example-wrap"><pre class="line-numbers"><span id="1">  1</span>
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</pre><pre class="rust"><code><span class="comment">// TODO Rename -- this is for KML, CSV, GeoJSON</span>

<span class="kw">use</span> <span class="ident">std::collections</span>::{<span class="ident">BTreeMap</span>, <span class="ident">HashMap</span>, <span class="ident">HashSet</span>};

<span class="kw">use</span> <span class="ident">aabb_quadtree::QuadTree</span>;

<span class="kw">use</span> <span class="ident">abstutil</span>::{<span class="ident">prettyprint_usize</span>, <span class="ident">Timer</span>};
<span class="kw">use</span> <span class="ident">geom</span>::{<span class="ident">ArrowCap</span>, <span class="ident">Circle</span>, <span class="ident">Distance</span>, <span class="ident">PolyLine</span>, <span class="ident">Polygon</span>, <span class="ident">Pt2D</span>, <span class="ident">Ring</span>};
<span class="kw">use</span> <span class="ident">kml</span>::{<span class="ident">ExtraShape</span>, <span class="ident">ExtraShapes</span>};
<span class="kw">use</span> <span class="ident">map_gui::colors::ColorScheme</span>;
<span class="kw">use</span> <span class="ident">map_gui::tools</span>::{<span class="ident">FilePicker</span>, <span class="ident">PopupMsg</span>};
<span class="kw">use</span> <span class="ident">map_model::BuildingID</span>;
<span class="kw">use</span> <span class="ident">widgetry</span>::{
    <span class="ident">lctrl</span>, <span class="ident">Choice</span>, <span class="ident">Color</span>, <span class="ident">Drawable</span>, <span class="ident">EventCtx</span>, <span class="ident">GeomBatch</span>, <span class="ident">GfxCtx</span>, <span class="ident">HorizontalAlignment</span>, <span class="ident">Key</span>, <span class="ident">Line</span>,
    <span class="ident">Outcome</span>, <span class="ident">Panel</span>, <span class="ident">State</span>, <span class="ident">Text</span>, <span class="ident">TextBox</span>, <span class="ident">TextExt</span>, <span class="ident">VerticalAlignment</span>, <span class="ident">Widget</span>,
};

<span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::app</span>::{<span class="ident">App</span>, <span class="ident">Transition</span>};

<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ViewKML</span> {
    <span class="ident">panel</span>: <span class="ident">Panel</span>,
    <span class="ident">objects</span>: <span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">Object</span><span class="op">&gt;</span>,
    <span class="ident">draw</span>: <span class="ident">Drawable</span>,

    <span class="ident">selected</span>: <span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">usize</span><span class="op">&gt;</span>,
    <span class="ident">quadtree</span>: <span class="ident">QuadTree</span><span class="op">&lt;</span><span class="ident">usize</span><span class="op">&gt;</span>,
    <span class="ident">draw_query</span>: <span class="ident">Drawable</span>,
}

<span class="kw">struct</span> <span class="ident">Object</span> {
    <span class="ident">polygon</span>: <span class="ident">Polygon</span>,
    <span class="ident">color</span>: <span class="ident">Color</span>,
    <span class="ident">attribs</span>: <span class="ident">BTreeMap</span><span class="op">&lt;</span><span class="ident">String</span>, <span class="ident">String</span><span class="op">&gt;</span>,

    <span class="ident">osm_bldg</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">BuildingID</span><span class="op">&gt;</span>,
}

<span class="kw">const</span> <span class="ident">RADIUS</span>: <span class="ident">Distance</span> <span class="op">=</span> <span class="ident">Distance::const_meters</span>(<span class="number">5.0</span>);
<span class="kw">const</span> <span class="ident">THICKNESS</span>: <span class="ident">Distance</span> <span class="op">=</span> <span class="ident">Distance::const_meters</span>(<span class="number">2.0</span>);

<span class="kw">impl</span> <span class="ident">ViewKML</span> {
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new_state</span>(<span class="ident">ctx</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">EventCtx</span>, <span class="ident">app</span>: <span class="kw-2">&amp;</span><span class="ident">App</span>, <span class="ident">path</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">String</span><span class="op">&gt;</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Box</span><span class="op">&lt;</span><span class="kw">dyn</span> <span class="ident">State</span><span class="op">&lt;</span><span class="ident">App</span><span class="op">&gt;</span><span class="op">&gt;</span> {
        <span class="ident">ctx</span>.<span class="ident">loading_screen</span>(<span class="string">&quot;load kml&quot;</span>, <span class="op">|</span><span class="ident">ctx</span>, <span class="kw-2">mut</span> <span class="ident">timer</span><span class="op">|</span> {
            <span class="comment">// Enable to write a smaller .bin only with the shapes matching the bounds.</span>
            <span class="kw">let</span> <span class="ident">dump_clipped_shapes</span> <span class="op">=</span> <span class="bool-val">false</span>;
            <span class="kw">let</span> (<span class="ident">dataset_name</span>, <span class="ident">objects</span>) <span class="op">=</span> <span class="ident">load_objects</span>(<span class="ident">app</span>, <span class="ident">path</span>, <span class="ident">dump_clipped_shapes</span>, <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">timer</span>);

            <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">batch</span> <span class="op">=</span> <span class="ident">GeomBatch::new</span>();
            <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">quadtree</span> <span class="op">=</span> <span class="ident">QuadTree::default</span>(<span class="ident">app</span>.<span class="ident">primary</span>.<span class="ident">map</span>.<span class="ident">get_bounds</span>().<span class="ident">as_bbox</span>());
            <span class="ident">timer</span>.<span class="ident">start_iter</span>(<span class="string">&quot;render shapes&quot;</span>, <span class="ident">objects</span>.<span class="ident">len</span>());
            <span class="kw">for</span> (<span class="ident">idx</span>, <span class="ident">obj</span>) <span class="kw">in</span> <span class="ident">objects</span>.<span class="ident">iter</span>().<span class="ident">enumerate</span>() {
                <span class="ident">timer</span>.<span class="ident">next</span>();
                <span class="ident">quadtree</span>.<span class="ident">insert_with_box</span>(<span class="ident">idx</span>, <span class="ident">obj</span>.<span class="ident">polygon</span>.<span class="ident">get_bounds</span>().<span class="ident">as_bbox</span>());
                <span class="ident">batch</span>.<span class="ident">push</span>(<span class="ident">obj</span>.<span class="ident">color</span>, <span class="ident">obj</span>.<span class="ident">polygon</span>.<span class="ident">clone</span>());
            }

            <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">choices</span> <span class="op">=</span> <span class="macro">vec!</span>[<span class="ident">Choice::string</span>(<span class="string">&quot;None&quot;</span>)];
            <span class="kw">if</span> <span class="ident">dataset_name</span> <span class="op">=</span><span class="op">=</span> <span class="string">&quot;parcels&quot;</span> {
                <span class="ident">choices</span>.<span class="ident">push</span>(<span class="ident">Choice::string</span>(<span class="string">&quot;parcels without buildings&quot;</span>));
                <span class="ident">choices</span>.<span class="ident">push</span>(<span class="ident">Choice::string</span>(
                    <span class="string">&quot;parcels without buildings and trips or parking&quot;</span>,
                ));
                <span class="ident">choices</span>.<span class="ident">push</span>(<span class="ident">Choice::string</span>(<span class="string">&quot;parcels with multiple buildings&quot;</span>));
                <span class="ident">choices</span>.<span class="ident">push</span>(<span class="ident">Choice::string</span>(<span class="string">&quot;parcels with &gt;1 households&quot;</span>));
                <span class="ident">choices</span>.<span class="ident">push</span>(<span class="ident">Choice::string</span>(<span class="string">&quot;parcels with parking&quot;</span>));
            }

            <span class="ident">Box::new</span>(<span class="ident">ViewKML</span> {
                <span class="ident">draw</span>: <span class="ident">ctx</span>.<span class="ident">upload</span>(<span class="ident">batch</span>),
                <span class="ident">panel</span>: <span class="ident">Panel::new_builder</span>(<span class="ident">Widget::col</span>(<span class="macro">vec!</span>[
                    <span class="ident">Widget::row</span>(<span class="macro">vec!</span>[
                        <span class="ident">Line</span>(<span class="string">&quot;KML viewer&quot;</span>).<span class="ident">small_heading</span>().<span class="ident">into_widget</span>(<span class="ident">ctx</span>),
                        <span class="ident">ctx</span>.<span class="ident">style</span>().<span class="ident">btn_close_widget</span>(<span class="ident">ctx</span>),
                    ]),
                    <span class="macro">format!</span>(
                        <span class="string">&quot;{}: {} objects&quot;</span>,
                        <span class="ident">dataset_name</span>,
                        <span class="ident">prettyprint_usize</span>(<span class="ident">objects</span>.<span class="ident">len</span>())
                    )
                    .<span class="ident">text_widget</span>(<span class="ident">ctx</span>),
                    <span class="ident">ctx</span>.<span class="ident">style</span>()
                        .<span class="ident">btn_outline</span>
                        .<span class="ident">text</span>(<span class="string">&quot;load KML file&quot;</span>)
                        .<span class="ident">hotkey</span>(<span class="ident">lctrl</span>(<span class="ident">Key::L</span>))
                        .<span class="ident">build_def</span>(<span class="ident">ctx</span>),
                    <span class="ident">Widget::row</span>(<span class="macro">vec!</span>[
                        <span class="string">&quot;Query:&quot;</span>.<span class="ident">text_widget</span>(<span class="ident">ctx</span>),
                        <span class="ident">Widget::dropdown</span>(<span class="ident">ctx</span>, <span class="string">&quot;query&quot;</span>, <span class="string">&quot;None&quot;</span>.<span class="ident">to_string</span>(), <span class="ident">choices</span>),
                    ]),
                    <span class="ident">Widget::row</span>(<span class="macro">vec!</span>[
                        <span class="string">&quot;Key=value filter:&quot;</span>.<span class="ident">text_widget</span>(<span class="ident">ctx</span>),
                        <span class="ident">TextBox::widget</span>(<span class="ident">ctx</span>, <span class="string">&quot;filter&quot;</span>, <span class="ident">String::new</span>(), <span class="bool-val">false</span>, <span class="number">10</span>),
                    ]),
                    <span class="string">&quot;Query matches 0 objects&quot;</span>.<span class="ident">text_widget</span>(<span class="ident">ctx</span>).<span class="ident">named</span>(<span class="string">&quot;matches&quot;</span>),
                    <span class="string">&quot;Mouseover an object to examine it&quot;</span>
                        .<span class="ident">text_widget</span>(<span class="ident">ctx</span>)
                        .<span class="ident">named</span>(<span class="string">&quot;mouseover&quot;</span>),
                ]))
                .<span class="ident">aligned</span>(<span class="ident">HorizontalAlignment::Left</span>, <span class="ident">VerticalAlignment::Top</span>)
                .<span class="ident">build</span>(<span class="ident">ctx</span>),
                <span class="ident">objects</span>,
                <span class="ident">quadtree</span>,
                <span class="ident">selected</span>: <span class="ident">Vec::new</span>(),
                <span class="ident">draw_query</span>: <span class="ident">Drawable::empty</span>(<span class="ident">ctx</span>),
            })
        })
    }
}

<span class="kw">impl</span> <span class="ident">State</span><span class="op">&lt;</span><span class="ident">App</span><span class="op">&gt;</span> <span class="kw">for</span> <span class="ident">ViewKML</span> {
    <span class="kw">fn</span> <span class="ident">event</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">ctx</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">EventCtx</span>, <span class="ident">app</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">App</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Transition</span> {
        <span class="ident">ctx</span>.<span class="ident">canvas_movement</span>();
        <span class="kw">if</span> <span class="ident">ctx</span>.<span class="ident">redo_mouseover</span>() {
            <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">new_selected</span> <span class="op">=</span> <span class="ident">Vec::new</span>();
            <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">pt</span>) <span class="op">=</span> <span class="ident">ctx</span>.<span class="ident">canvas</span>.<span class="ident">get_cursor_in_map_space</span>() {
                <span class="kw">for</span> <span class="kw-2">&amp;</span>(<span class="ident">idx</span>, <span class="kw">_</span>, <span class="kw">_</span>) <span class="kw">in</span> <span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">quadtree</span>.<span class="ident">query</span>(
                    <span class="ident">Circle::new</span>(<span class="ident">pt</span>, <span class="ident">Distance::meters</span>(<span class="number">3.0</span>))
                        .<span class="ident">get_bounds</span>()
                        .<span class="ident">as_bbox</span>(),
                ) {
                    <span class="kw">if</span> <span class="self">self</span>.<span class="ident">objects</span>[<span class="kw-2">*</span><span class="ident">idx</span>].<span class="ident">polygon</span>.<span class="ident">contains_pt</span>(<span class="ident">pt</span>) {
                        <span class="ident">new_selected</span>.<span class="ident">push</span>(<span class="kw-2">*</span><span class="ident">idx</span>);
                    }
                }
            }
            <span class="kw">if</span> <span class="ident">new_selected</span> <span class="op">!</span><span class="op">=</span> <span class="self">self</span>.<span class="ident">selected</span> {
                <span class="self">self</span>.<span class="ident">selected</span> <span class="op">=</span> <span class="ident">new_selected</span>;
                <span class="kw">if</span> <span class="self">self</span>.<span class="ident">selected</span>.<span class="ident">is_empty</span>() {
                    <span class="kw">let</span> <span class="ident">details</span> <span class="op">=</span> <span class="string">&quot;Mouseover an object to examine it&quot;</span>.<span class="ident">text_widget</span>(<span class="ident">ctx</span>);
                    <span class="self">self</span>.<span class="ident">panel</span>.<span class="ident">replace</span>(<span class="ident">ctx</span>, <span class="string">&quot;mouseover&quot;</span>, <span class="ident">details</span>);
                } <span class="kw">else</span> {
                    <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">txt</span> <span class="op">=</span> <span class="ident">Text::new</span>();
                    <span class="kw">if</span> <span class="self">self</span>.<span class="ident">selected</span>.<span class="ident">len</span>() <span class="op">&gt;</span> <span class="number">1</span> {
                        <span class="ident">txt</span>.<span class="ident">add_line</span>(<span class="macro">format!</span>(<span class="string">&quot;Selecting {} objects&quot;</span>, <span class="self">self</span>.<span class="ident">selected</span>.<span class="ident">len</span>()));
                    }
                    <span class="kw">for</span> <span class="ident">idx</span> <span class="kw">in</span> <span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">selected</span> {
                        <span class="kw">if</span> <span class="self">self</span>.<span class="ident">selected</span>.<span class="ident">len</span>() <span class="op">&gt;</span> <span class="number">1</span> {
                            <span class="ident">txt</span>.<span class="ident">add_line</span>(<span class="ident">Line</span>(<span class="string">&quot;Object&quot;</span>).<span class="ident">small_heading</span>());
                        }
                        <span class="kw">for</span> (<span class="ident">k</span>, <span class="ident">v</span>) <span class="kw">in</span> <span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">objects</span>[<span class="kw-2">*</span><span class="ident">idx</span>].<span class="ident">attribs</span> {
                            <span class="ident">txt</span>.<span class="ident">add_line</span>(<span class="macro">format!</span>(<span class="string">&quot;{} = {}&quot;</span>, <span class="ident">k</span>, <span class="ident">v</span>));
                        }
                    }
                    <span class="kw">let</span> <span class="ident">details</span> <span class="op">=</span> <span class="ident">txt</span>.<span class="ident">into_widget</span>(<span class="ident">ctx</span>);
                    <span class="self">self</span>.<span class="ident">panel</span>.<span class="ident">replace</span>(<span class="ident">ctx</span>, <span class="string">&quot;mouseover&quot;</span>, <span class="ident">details</span>);
                }
            }
        }
        <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">selected</span>.<span class="ident">is_empty</span>() <span class="op">&amp;&amp;</span> <span class="ident">ctx</span>.<span class="ident">normal_left_click</span>() {
            <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">lines</span> <span class="op">=</span> <span class="ident">Vec::new</span>();
            <span class="kw">let</span> <span class="ident">title</span> <span class="op">=</span> <span class="macro">format!</span>(<span class="string">&quot;{} objects&quot;</span>, <span class="self">self</span>.<span class="ident">selected</span>.<span class="ident">len</span>());
            <span class="kw">for</span> <span class="ident">idx</span> <span class="kw">in</span> <span class="self">self</span>.<span class="ident">selected</span>.<span class="ident">drain</span>(..) {
                <span class="ident">lines</span>.<span class="ident">push</span>(<span class="string">&quot;Object&quot;</span>.<span class="ident">to_string</span>());
                <span class="ident">lines</span>.<span class="ident">push</span>(<span class="ident">String::new</span>());
                <span class="kw">for</span> (<span class="ident">k</span>, <span class="ident">v</span>) <span class="kw">in</span> <span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">objects</span>[<span class="ident">idx</span>].<span class="ident">attribs</span> {
                    <span class="ident">lines</span>.<span class="ident">push</span>(<span class="macro">format!</span>(<span class="string">&quot;{} = {}&quot;</span>, <span class="ident">k</span>, <span class="ident">v</span>));
                }
                <span class="ident">lines</span>.<span class="ident">push</span>(<span class="ident">String::new</span>());
            }
            <span class="ident">lines</span>.<span class="ident">pop</span>();
            <span class="kw">return</span> <span class="ident">Transition::Push</span>(<span class="ident">PopupMsg::new_state</span>(<span class="ident">ctx</span>, <span class="kw-2">&amp;</span><span class="ident">title</span>, <span class="ident">lines</span>));
        }

        <span class="kw">match</span> <span class="self">self</span>.<span class="ident">panel</span>.<span class="ident">event</span>(<span class="ident">ctx</span>) {
            <span class="ident">Outcome::Clicked</span>(<span class="ident">x</span>) <span class="op">=</span><span class="op">&gt;</span> <span class="kw">match</span> <span class="ident">x</span>.<span class="ident">as_ref</span>() {
                <span class="string">&quot;close&quot;</span> <span class="op">=</span><span class="op">&gt;</span> {
                    <span class="kw">return</span> <span class="ident">Transition::Pop</span>;
                }
                <span class="string">&quot;load KML file&quot;</span> <span class="op">=</span><span class="op">&gt;</span> {
                    <span class="kw">return</span> <span class="ident">pick_file</span>(<span class="ident">ctx</span>, <span class="ident">app</span>);
                }
                <span class="kw">_</span> <span class="op">=</span><span class="op">&gt;</span> <span class="macro">unreachable!</span>(),
            },
            <span class="ident">Outcome::Changed</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">&gt;</span> {
                <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">query</span>: <span class="ident">String</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">panel</span>.<span class="ident">dropdown_value</span>(<span class="string">&quot;query&quot;</span>);
                <span class="kw">let</span> <span class="ident">filter</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">panel</span>.<span class="ident">text_box</span>(<span class="string">&quot;filter&quot;</span>);
                <span class="kw">if</span> <span class="ident">query</span> <span class="op">=</span><span class="op">=</span> <span class="string">&quot;None&quot;</span> <span class="op">&amp;&amp;</span> <span class="op">!</span><span class="ident">filter</span>.<span class="ident">is_empty</span>() {
                    <span class="ident">query</span> <span class="op">=</span> <span class="ident">filter</span>;
                }
                <span class="kw">let</span> (<span class="ident">batch</span>, <span class="ident">cnt</span>) <span class="op">=</span> <span class="ident">make_query</span>(<span class="ident">app</span>, <span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">objects</span>, <span class="kw-2">&amp;</span><span class="ident">query</span>);
                <span class="self">self</span>.<span class="ident">draw_query</span> <span class="op">=</span> <span class="ident">ctx</span>.<span class="ident">upload</span>(<span class="ident">batch</span>);
                <span class="self">self</span>.<span class="ident">panel</span>.<span class="ident">replace</span>(
                    <span class="ident">ctx</span>,
                    <span class="string">&quot;matches&quot;</span>,
                    <span class="macro">format!</span>(<span class="string">&quot;Query matches {} objects&quot;</span>, <span class="ident">cnt</span>).<span class="ident">text_widget</span>(<span class="ident">ctx</span>),
                );
            }
            <span class="kw">_</span> <span class="op">=</span><span class="op">&gt;</span> {}
        }

        <span class="ident">Transition::Keep</span>
    }

    <span class="kw">fn</span> <span class="ident">draw</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">g</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">GfxCtx</span>, <span class="ident">app</span>: <span class="kw-2">&amp;</span><span class="ident">App</span>) {
        <span class="ident">g</span>.<span class="ident">redraw</span>(<span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">draw</span>);
        <span class="ident">g</span>.<span class="ident">redraw</span>(<span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">draw_query</span>);
        <span class="self">self</span>.<span class="ident">panel</span>.<span class="ident">draw</span>(<span class="ident">g</span>);

        <span class="kw">for</span> <span class="ident">idx</span> <span class="kw">in</span> <span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">selected</span> {
            <span class="kw">let</span> <span class="ident">obj</span> <span class="op">=</span> <span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">objects</span>[<span class="kw-2">*</span><span class="ident">idx</span>];
            <span class="ident">g</span>.<span class="ident">draw_polygon</span>(<span class="ident">Color::BLUE</span>, <span class="ident">obj</span>.<span class="ident">polygon</span>.<span class="ident">clone</span>());
            <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">b</span>) <span class="op">=</span> <span class="ident">obj</span>.<span class="ident">osm_bldg</span> {
                <span class="ident">g</span>.<span class="ident">draw_polygon</span>(<span class="ident">Color::GREEN</span>, <span class="ident">app</span>.<span class="ident">primary</span>.<span class="ident">map</span>.<span class="ident">get_b</span>(<span class="ident">b</span>).<span class="ident">polygon</span>.<span class="ident">clone</span>());
            }
        }
    }
}

<span class="doccomment">/// Loads and clips objects to the current map. Also returns the dataset name.</span>
<span class="kw">fn</span> <span class="ident">load_objects</span>(
    <span class="ident">app</span>: <span class="kw-2">&amp;</span><span class="ident">App</span>,
    <span class="ident">path</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">String</span><span class="op">&gt;</span>,
    <span class="ident">dump_clipped_shapes</span>: <span class="ident">bool</span>,
    <span class="ident">timer</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">Timer</span>,
) <span class="op">-</span><span class="op">&gt;</span> (<span class="ident">String</span>, <span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">Object</span><span class="op">&gt;</span>) {
    <span class="kw">let</span> <span class="ident">map</span> <span class="op">=</span> <span class="kw-2">&amp;</span><span class="ident">app</span>.<span class="ident">primary</span>.<span class="ident">map</span>;
    <span class="kw">let</span> <span class="ident">bounds</span> <span class="op">=</span> <span class="ident">map</span>.<span class="ident">get_gps_bounds</span>();

    <span class="kw">let</span> <span class="ident">raw_shapes</span> <span class="op">=</span> <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="ident">path</span>) <span class="op">=</span> <span class="ident">path</span> {
        <span class="kw">if</span> <span class="ident">path</span>.<span class="ident">ends_with</span>(<span class="string">&quot;.kml&quot;</span>) {
            <span class="kw">let</span> <span class="ident">shapes</span> <span class="op">=</span> <span class="ident">kml::load</span>(<span class="ident">path</span>.<span class="ident">clone</span>(), <span class="ident">bounds</span>, <span class="bool-val">true</span>, <span class="ident">timer</span>).<span class="ident">unwrap</span>();
            <span class="comment">// Assuming this is some huge file, conveniently convert the extract to .bin.</span>
            <span class="comment">// The new file will show up as untracked in git, so it&#39;ll be obvious this</span>
            <span class="comment">// happened.</span>
            <span class="comment">// Except don&#39;t do this for Seattle collisions; that&#39;s separately transformed into a</span>
            <span class="comment">// different binary format!</span>
            <span class="kw">if</span> <span class="op">!</span><span class="ident">path</span>.<span class="ident">ends_with</span>(<span class="string">&quot;input/us/seattle/collisions.kml&quot;</span>) {
                <span class="ident">abstio::write_binary</span>(<span class="ident">path</span>.<span class="ident">replace</span>(<span class="string">&quot;.kml&quot;</span>, <span class="string">&quot;.bin&quot;</span>), <span class="kw-2">&amp;</span><span class="ident">shapes</span>);
            }
            <span class="ident">shapes</span>
        } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">path</span>.<span class="ident">ends_with</span>(<span class="string">&quot;.csv&quot;</span>) {
            <span class="kw">let</span> <span class="ident">shapes</span> <span class="op">=</span> <span class="ident">ExtraShapes::load_csv</span>(<span class="ident">path</span>.<span class="ident">clone</span>(), <span class="ident">bounds</span>, <span class="ident">timer</span>).<span class="ident">unwrap</span>();
            <span class="comment">// Assuming this is some huge file, conveniently convert the extract to .bin.</span>
            <span class="comment">// The new file will show up as untracked in git, so it&#39;ll be obvious this</span>
            <span class="comment">// happened.</span>
            <span class="ident">abstio::write_binary</span>(<span class="ident">path</span>.<span class="ident">replace</span>(<span class="string">&quot;.csv&quot;</span>, <span class="string">&quot;.bin&quot;</span>), <span class="kw-2">&amp;</span><span class="ident">shapes</span>);
            <span class="ident">shapes</span>
        } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">path</span>.<span class="ident">ends_with</span>(<span class="string">&quot;.bin&quot;</span>) {
            <span class="ident">abstio::read_binary</span>::<span class="op">&lt;</span><span class="ident">ExtraShapes</span><span class="op">&gt;</span>(<span class="ident">path</span>.<span class="ident">to_string</span>(), <span class="ident">timer</span>)
        } <span class="kw">else</span> {
            <span class="ident">ExtraShapes</span> { <span class="ident">shapes</span>: <span class="ident">Vec::new</span>() }
        }
    } <span class="kw">else</span> {
        <span class="ident">ExtraShapes</span> { <span class="ident">shapes</span>: <span class="ident">Vec::new</span>() }
    };
    <span class="kw">let</span> <span class="ident">boundary</span> <span class="op">=</span> <span class="ident">map</span>.<span class="ident">get_boundary_polygon</span>();
    <span class="kw">let</span> <span class="ident">dataset_name</span> <span class="op">=</span> <span class="ident">path</span>
        .<span class="ident">as_ref</span>()
        .<span class="ident">map</span>(<span class="ident">abstutil::basename</span>)
        .<span class="ident">unwrap_or_else</span>(<span class="op">|</span><span class="op">|</span> <span class="string">&quot;no file&quot;</span>.<span class="ident">to_string</span>());
    <span class="kw">let</span> <span class="ident">bldg_lookup</span>: <span class="ident">HashMap</span><span class="op">&lt;</span><span class="ident">String</span>, <span class="ident">BuildingID</span><span class="op">&gt;</span> <span class="op">=</span> <span class="ident">map</span>
        .<span class="ident">all_buildings</span>()
        .<span class="ident">iter</span>()
        .<span class="ident">map</span>(<span class="op">|</span><span class="ident">b</span><span class="op">|</span> (<span class="ident">b</span>.<span class="ident">orig_id</span>.<span class="ident">inner</span>().<span class="ident">to_string</span>(), <span class="ident">b</span>.<span class="ident">id</span>))
        .<span class="ident">collect</span>();
    <span class="kw">let</span> <span class="ident">cs</span> <span class="op">=</span> <span class="kw-2">&amp;</span><span class="ident">app</span>.<span class="ident">cs</span>;

    <span class="kw">let</span> <span class="ident">pairs</span>: <span class="ident">Vec</span><span class="op">&lt;</span>(<span class="ident">Object</span>, <span class="ident">ExtraShape</span>)<span class="op">&gt;</span> <span class="op">=</span> <span class="ident">timer</span>
        .<span class="ident">parallelize</span>(
            <span class="string">&quot;convert shapes&quot;</span>,
            <span class="ident">raw_shapes</span>.<span class="ident">shapes</span>.<span class="ident">into_iter</span>().<span class="ident">enumerate</span>().<span class="ident">collect</span>(),
            <span class="op">|</span>(<span class="ident">idx</span>, <span class="ident">shape</span>)<span class="op">|</span> {
                <span class="kw">let</span> <span class="ident">pts</span> <span class="op">=</span> <span class="ident">bounds</span>.<span class="ident">convert</span>(<span class="kw-2">&amp;</span><span class="ident">shape</span>.<span class="ident">points</span>);
                <span class="kw">if</span> <span class="ident">pts</span>.<span class="ident">iter</span>().<span class="ident">any</span>(<span class="op">|</span><span class="ident">pt</span><span class="op">|</span> <span class="ident">boundary</span>.<span class="ident">contains_pt</span>(<span class="kw-2">*</span><span class="ident">pt</span>)) {
                    <span class="prelude-val">Some</span>((
                        <span class="ident">make_object</span>(
                            <span class="ident">cs</span>,
                            <span class="kw-2">&amp;</span><span class="ident">bldg_lookup</span>,
                            <span class="ident">shape</span>.<span class="ident">attributes</span>.<span class="ident">clone</span>(),
                            <span class="ident">pts</span>,
                            <span class="kw-2">&amp;</span><span class="ident">dataset_name</span>,
                            <span class="ident">idx</span>,
                        ),
                        <span class="ident">shape</span>,
                    ))
                } <span class="kw">else</span> {
                    <span class="prelude-val">None</span>
                }
            },
        )
        .<span class="ident">into_iter</span>()
        .<span class="ident">flatten</span>()
        .<span class="ident">collect</span>();
    <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">objects</span> <span class="op">=</span> <span class="ident">Vec::new</span>();
    <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">clipped_shapes</span> <span class="op">=</span> <span class="ident">Vec::new</span>();
    <span class="kw">for</span> (<span class="ident">obj</span>, <span class="ident">shape</span>) <span class="kw">in</span> <span class="ident">pairs</span> {
        <span class="ident">objects</span>.<span class="ident">push</span>(<span class="ident">obj</span>);
        <span class="ident">clipped_shapes</span>.<span class="ident">push</span>(<span class="ident">shape</span>);
    }
    <span class="kw">if</span> <span class="ident">path</span>.<span class="ident">is_some</span>() <span class="op">&amp;&amp;</span> <span class="ident">dump_clipped_shapes</span> {
        <span class="ident">abstio::write_binary</span>(
            <span class="macro">format!</span>(<span class="string">&quot;{}_clipped_for_{}.bin&quot;</span>, <span class="ident">dataset_name</span>, <span class="ident">map</span>.<span class="ident">get_name</span>().<span class="ident">map</span>),
            <span class="kw-2">&amp;</span><span class="ident">clipped_shapes</span>,
        );
    }

    (<span class="ident">dataset_name</span>, <span class="ident">objects</span>)
}

<span class="kw">fn</span> <span class="ident">make_object</span>(
    <span class="ident">cs</span>: <span class="kw-2">&amp;</span><span class="ident">ColorScheme</span>,
    <span class="ident">bldg_lookup</span>: <span class="kw-2">&amp;</span><span class="ident">HashMap</span><span class="op">&lt;</span><span class="ident">String</span>, <span class="ident">BuildingID</span><span class="op">&gt;</span>,
    <span class="ident">attribs</span>: <span class="ident">BTreeMap</span><span class="op">&lt;</span><span class="ident">String</span>, <span class="ident">String</span><span class="op">&gt;</span>,
    <span class="ident">pts</span>: <span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">Pt2D</span><span class="op">&gt;</span>,
    <span class="ident">dataset_name</span>: <span class="kw-2">&amp;</span><span class="ident">str</span>,
    <span class="ident">obj_idx</span>: <span class="ident">usize</span>,
) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Object</span> {
    <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">color</span> <span class="op">=</span> <span class="ident">Color::RED</span>.<span class="ident">alpha</span>(<span class="number">0.8</span>);
    <span class="kw">let</span> <span class="ident">polygon</span> <span class="op">=</span> <span class="kw">if</span> <span class="ident">pts</span>.<span class="ident">len</span>() <span class="op">=</span><span class="op">=</span> <span class="number">1</span> {
        <span class="ident">Circle::new</span>(<span class="ident">pts</span>[<span class="number">0</span>], <span class="ident">RADIUS</span>).<span class="ident">to_polygon</span>()
    } <span class="kw">else</span> <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">ring</span>) <span class="op">=</span> <span class="ident">Ring::new</span>(<span class="ident">pts</span>.<span class="ident">clone</span>()) {
        <span class="kw">if</span> <span class="ident">attribs</span>.<span class="ident">get</span>(<span class="string">&quot;spatial_type&quot;</span>) <span class="op">=</span><span class="op">=</span> <span class="prelude-val">Some</span>(<span class="kw-2">&amp;</span><span class="string">&quot;Polygon&quot;</span>.<span class="ident">to_string</span>()) {
            <span class="ident">color</span> <span class="op">=</span> <span class="ident">cs</span>.<span class="ident">rotating_color_plot</span>(<span class="ident">obj_idx</span>).<span class="ident">alpha</span>(<span class="number">0.8</span>);
            <span class="ident">ring</span>.<span class="ident">into_polygon</span>()
        } <span class="kw">else</span> {
            <span class="ident">ring</span>.<span class="ident">to_outline</span>(<span class="ident">THICKNESS</span>)
        }
    } <span class="kw">else</span> {
        <span class="kw">let</span> <span class="ident">backup</span> <span class="op">=</span> <span class="ident">pts</span>[<span class="number">0</span>];
        <span class="kw">match</span> <span class="ident">PolyLine::new</span>(<span class="ident">pts</span>) {
            <span class="prelude-val">Ok</span>(<span class="ident">pl</span>) <span class="op">=</span><span class="op">&gt;</span> <span class="ident">pl</span>.<span class="ident">make_arrow</span>(<span class="ident">THICKNESS</span>, <span class="ident">ArrowCap::Triangle</span>),
            <span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=</span><span class="op">&gt;</span> {
                <span class="macro">println!</span>(
                    <span class="string">&quot;Object with attribs {:?} has messed up geometry: {}&quot;</span>,
                    <span class="ident">attribs</span>, <span class="ident">err</span>
                );
                <span class="ident">Circle::new</span>(<span class="ident">backup</span>, <span class="ident">RADIUS</span>).<span class="ident">to_polygon</span>()
            }
        }
    };

    <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">osm_bldg</span> <span class="op">=</span> <span class="prelude-val">None</span>;
    <span class="kw">if</span> <span class="ident">dataset_name</span> <span class="op">=</span><span class="op">=</span> <span class="string">&quot;parcels&quot;</span> {
        <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">bldg</span>) <span class="op">=</span> <span class="ident">attribs</span>.<span class="ident">get</span>(<span class="string">&quot;osm_bldg&quot;</span>) {
            <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">id</span>) <span class="op">=</span> <span class="ident">bldg_lookup</span>.<span class="ident">get</span>(<span class="ident">bldg</span>) {
                <span class="ident">osm_bldg</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="kw-2">*</span><span class="ident">id</span>);
            }
        }
    }

    <span class="ident">Object</span> {
        <span class="ident">polygon</span>,
        <span class="ident">color</span>,
        <span class="ident">attribs</span>,
        <span class="ident">osm_bldg</span>,
    }
}

<span class="kw">fn</span> <span class="ident">make_query</span>(<span class="ident">app</span>: <span class="kw-2">&amp;</span><span class="ident">App</span>, <span class="ident">objects</span>: <span class="kw-2">&amp;</span>[<span class="ident">Object</span>], <span class="ident">query</span>: <span class="kw-2">&amp;</span><span class="ident">str</span>) <span class="op">-</span><span class="op">&gt;</span> (<span class="ident">GeomBatch</span>, <span class="ident">usize</span>) {
    <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">batch</span> <span class="op">=</span> <span class="ident">GeomBatch::new</span>();
    <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cnt</span> <span class="op">=</span> <span class="number">0</span>;
    <span class="kw">let</span> <span class="ident">color</span> <span class="op">=</span> <span class="ident">Color::BLUE</span>.<span class="ident">alpha</span>(<span class="number">0.8</span>);
    <span class="kw">match</span> <span class="ident">query</span> {
        <span class="string">&quot;None&quot;</span> <span class="op">=</span><span class="op">&gt;</span> {}
        <span class="string">&quot;parcels without buildings&quot;</span> <span class="op">=</span><span class="op">&gt;</span> {
            <span class="kw">for</span> <span class="ident">obj</span> <span class="kw">in</span> <span class="ident">objects</span> {
                <span class="kw">if</span> <span class="ident">obj</span>.<span class="ident">osm_bldg</span>.<span class="ident">is_none</span>() {
                    <span class="ident">cnt</span> <span class="op">+</span><span class="op">=</span> <span class="number">1</span>;
                    <span class="ident">batch</span>.<span class="ident">push</span>(<span class="ident">color</span>, <span class="ident">obj</span>.<span class="ident">polygon</span>.<span class="ident">clone</span>());
                }
            }
        }
        <span class="string">&quot;parcels without buildings and trips or parking&quot;</span> <span class="op">=</span><span class="op">&gt;</span> {
            <span class="kw">for</span> <span class="ident">obj</span> <span class="kw">in</span> <span class="ident">objects</span> {
                <span class="kw">if</span> <span class="ident">obj</span>.<span class="ident">osm_bldg</span>.<span class="ident">is_none</span>()
                    <span class="op">&amp;&amp;</span> (<span class="ident">obj</span>.<span class="ident">attribs</span>.<span class="ident">contains_key</span>(<span class="string">&quot;households&quot;</span>)
                        <span class="op">|</span><span class="op">|</span> <span class="ident">obj</span>.<span class="ident">attribs</span>.<span class="ident">contains_key</span>(<span class="string">&quot;parking&quot;</span>))
                {
                    <span class="ident">cnt</span> <span class="op">+</span><span class="op">=</span> <span class="number">1</span>;
                    <span class="ident">batch</span>.<span class="ident">push</span>(<span class="ident">color</span>, <span class="ident">obj</span>.<span class="ident">polygon</span>.<span class="ident">clone</span>());
                }
            }
        }
        <span class="string">&quot;parcels with multiple buildings&quot;</span> <span class="op">=</span><span class="op">&gt;</span> {
            <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">seen</span> <span class="op">=</span> <span class="ident">HashSet::new</span>();
            <span class="kw">for</span> <span class="ident">obj</span> <span class="kw">in</span> <span class="ident">objects</span> {
                <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">b</span>) <span class="op">=</span> <span class="ident">obj</span>.<span class="ident">osm_bldg</span> {
                    <span class="kw">if</span> <span class="ident">seen</span>.<span class="ident">contains</span>(<span class="kw-2">&amp;</span><span class="ident">b</span>) {
                        <span class="ident">cnt</span> <span class="op">+</span><span class="op">=</span> <span class="number">1</span>;
                        <span class="ident">batch</span>.<span class="ident">push</span>(<span class="ident">color</span>, <span class="ident">app</span>.<span class="ident">primary</span>.<span class="ident">map</span>.<span class="ident">get_b</span>(<span class="ident">b</span>).<span class="ident">polygon</span>.<span class="ident">clone</span>());
                    } <span class="kw">else</span> {
                        <span class="ident">seen</span>.<span class="ident">insert</span>(<span class="ident">b</span>);
                    }
                }
            }
        }
        <span class="string">&quot;parcels with &gt;1 households&quot;</span> <span class="op">=</span><span class="op">&gt;</span> {
            <span class="kw">for</span> <span class="ident">obj</span> <span class="kw">in</span> <span class="ident">objects</span> {
                <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">hh</span>) <span class="op">=</span> <span class="ident">obj</span>.<span class="ident">attribs</span>.<span class="ident">get</span>(<span class="string">&quot;households&quot;</span>) {
                    <span class="kw">if</span> <span class="ident">hh</span> <span class="op">!</span><span class="op">=</span> <span class="string">&quot;1&quot;</span> {
                        <span class="ident">cnt</span> <span class="op">+</span><span class="op">=</span> <span class="number">1</span>;
                        <span class="ident">batch</span>.<span class="ident">push</span>(<span class="ident">color</span>, <span class="ident">obj</span>.<span class="ident">polygon</span>.<span class="ident">clone</span>());
                    }
                }
            }
        }
        <span class="string">&quot;parcels with parking&quot;</span> <span class="op">=</span><span class="op">&gt;</span> {
            <span class="kw">for</span> <span class="ident">obj</span> <span class="kw">in</span> <span class="ident">objects</span> {
                <span class="kw">if</span> <span class="ident">obj</span>.<span class="ident">attribs</span>.<span class="ident">contains_key</span>(<span class="string">&quot;parking&quot;</span>) {
                    <span class="ident">cnt</span> <span class="op">+</span><span class="op">=</span> <span class="number">1</span>;
                    <span class="ident">batch</span>.<span class="ident">push</span>(<span class="ident">color</span>, <span class="ident">obj</span>.<span class="ident">polygon</span>.<span class="ident">clone</span>());
                }
            }
        }
        <span class="ident">x</span> <span class="op">=</span><span class="op">&gt;</span> {
            <span class="kw">for</span> <span class="ident">obj</span> <span class="kw">in</span> <span class="ident">objects</span> {
                <span class="kw">for</span> (<span class="ident">k</span>, <span class="ident">v</span>) <span class="kw">in</span> <span class="kw-2">&amp;</span><span class="ident">obj</span>.<span class="ident">attribs</span> {
                    <span class="kw">if</span> <span class="macro">format!</span>(<span class="string">&quot;{}={}&quot;</span>, <span class="ident">k</span>, <span class="ident">v</span>).<span class="ident">contains</span>(<span class="ident">x</span>) {
                        <span class="ident">batch</span>.<span class="ident">push</span>(<span class="ident">color</span>, <span class="ident">obj</span>.<span class="ident">polygon</span>.<span class="ident">clone</span>());
                        <span class="kw">break</span>;
                    }
                }
            }
        }
    }
    (<span class="ident">batch</span>, <span class="ident">cnt</span>)
}

<span class="kw">fn</span> <span class="ident">pick_file</span>(<span class="ident">ctx</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">EventCtx</span>, <span class="ident">app</span>: <span class="kw-2">&amp;</span><span class="ident">App</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">Transition</span> {
    <span class="ident">Transition::Push</span>(<span class="ident">FilePicker::new_state</span>(
        <span class="ident">ctx</span>,
        <span class="prelude-val">Some</span>(<span class="ident">app</span>.<span class="ident">primary</span>.<span class="ident">map</span>.<span class="ident">get_city_name</span>().<span class="ident">input_path</span>(<span class="string">&quot;&quot;</span>)),
        <span class="ident">Box::new</span>(<span class="op">|</span><span class="ident">ctx</span>, <span class="ident">app</span>, <span class="ident">maybe_path</span><span class="op">|</span> {
            <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span class="ident">path</span>)) <span class="op">=</span> <span class="ident">maybe_path</span> {
                <span class="ident">Transition::Multi</span>(<span class="macro">vec!</span>[
                    <span class="ident">Transition::Pop</span>,
                    <span class="ident">Transition::Replace</span>(<span class="ident">ViewKML::new_state</span>(<span class="ident">ctx</span>, <span class="ident">app</span>, <span class="prelude-val">Some</span>(<span class="ident">path</span>))),
                ])
            } <span class="kw">else</span> {
                <span class="ident">Transition::Pop</span>
            }
        }),
    ))
}
</code></pre></div>
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