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AppUI.svelte
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AppUI.svelte
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<svelte:window on:keydown="handleKeyPress(event)" />
<!-- Render full UI -->
<div id="controls_left" class="column">
<div id="spaces" class="panel">
<div id="space_info">
{#if spaceInfo}
<div>
<!-- Demo/inspect mode toggle-->
<button on:click="set({ demoMode: !demoMode })" class="demoModeToggle">
{demoMode ? 'inspect' : 'demo'}
</button>
<!-- Space info -->
<div>{spaceInfo.title}</div>
{#if !demoMode}
<div>{spaceId}: {spaceInfo.numFeatures.toLocaleString()} features, {spaceInfo.dataSize}, {spaceInfo.featureSize}</div>
{#if spaceInfo.updatedAt}
<div>{spaceInfo.updatedAt}</div>
{/if}
<div style="font-size:10px;">{spaceInfo.description}</div>
{/if}
</div>
{:elseif !spaceLoading}
<input type="text" placeholder="enter an XYZ space ID" bind:value='spaceId'>
<input type="text" placeholder="enter an XYZ token" bind:value='token'>
<button on:click="updateSpace(true)">Show XYZ Space</button>
{/if}
</div>
<div id="style_info" class:hideInDemoMode="demoMode">
{#if displayToggles}
<table>
<tr>
<td style="color:blue;" on:click='toggleDisplayOption("roads")'>roads:</td>
<td>{displayToggles.roads}</td>
<td style="color:blue;" on:click='toggleDisplayOption("buildings")'>buildings:</td>
<td>{displayToggles.buildings}</td>
<td style="color:blue;" on:click='toggleDisplayOption("water")'>water:</td>
<td>{displayToggles.water}</td>
<td style="color:blue;" on:click='toggleDisplayOption("places")'>places:</td>
<td>{displayToggles.places}</td>
</tr>
<tr>
<td style="color:blue;" on:click='toggleDisplayOption("points")'>points:</td>
<td>{displayToggles.points}</td>
<td style="color:blue;" on:click='toggleDisplayOption("lines")'>lines:</td>
<td>{displayToggles.lines}</td>
<td style="color:blue;" on:click='toggleDisplayOption("outlines")'>outlines:</td>
<td>{displayToggles.outlines}</td>
</tr>
</table>
<table>
<tr>
<td style="color:blue;" on:click='toggleDisplayOption("clustering")'>clustering:</td>
{#if displayToggles.clustering == 0}
<td>
<!-- {#if tokenCapabilities.hexbinClustering || tokenCapabilities.quadClustering} -->
off
<!-- {:else} -->
<!-- sign up for XYZ Pro to cluster -->
<!-- {/if} -->
</td>
{/if}
{#if displayToggles.clustering == 1}
<td>H3 hexbins</td>
{/if}
{#if displayToggles.clustering == 2}
<td>H3 hexbin centroids</td>
{/if}
{#if displayToggles.clustering == 3}
<td>Quadbins</td>
<td style="color:blue;" on:click='toggleDisplayOption("quadRez")'>resolution:</td>
<td>{displayToggles.quadRez}</td>
{/if}
</tr>
</table>
{#if gisInfo.voronoi || gisInfo.delaunay}
<table>
<tr>
<td>GIS:</td>
{#if gisInfo.voronoi}
<td style="color:blue;" on:click='toggleDisplayOption("voronoi")'>Voronoi:</td>
<td>
{#if displayToggles.voronoi == 0}
off
{/if}
{#if displayToggles.voronoi == 1}
{gisInfo.voronoi}
{/if}
</td>
{/if}
{#if gisInfo.delaunay}
<td style="color:blue;" on:click='toggleDisplayOption("delaunay")'>Delaunay:</td>
<td>
{#if displayToggles.delaunay == 0}
off
{/if}
{#if displayToggles.delaunay == 1}
{gisInfo.delaunay}
{/if}
</td>
{/if}
</tr>
</table>
{/if}
{#if hexbinInfo.spaceId}
<table>
<tr>
<td style="color:blue;" on:click='toggleDisplayOption("hexbins")'>
CLI hexbins: </td><td>
{#if displayToggles.hexbins == 0}
off
{/if}
{#if displayToggles.hexbins == 1}
on
{/if}
{#if displayToggles.hexbins == 2}
centroids
{/if}
</td>
</tr><tr>
<td>{hexbinInfo.spaceId}, zoom {hexbinInfo.zoomLevels}</td>
</tr>
</table>
{/if}
<!-- Basemap selector -->
<div class="controls_left_selector">basemap:
<select bind:value="basemap" class="controls_left_dropdown">
{#each Object.keys(basemaps) as basemap}
<option value="{basemap}">{basemap}</option>
{/each}
</select>
</div>
{#if isProjectable(basemap) }
<!-- Projection selector -->
<div class="controls_left_selector">projection:
<select bind:value="projection" class="controls_left_dropdown">
{#each Object.keys(projections) as projection}
<option value="{projection}">{projection}</option>
{/each}
</select>
</div>
{/if}
<!-- Export scene -->
<button on:click="fire('exportScene')" style="float: right;">export</button>
{/if}
</div>
<!-- Demo mode context -->
{#if demoMode && displayToggles.label != null}
<!-- Selected label property and value info -->
<div style="margin: 5px 0px;">
Features labeled by <b>{displayToggles.label}</b>
</div>
{/if}
{#if demoMode && featurePointSizeProp != null}
<!-- Selected point size property and value info -->
<div style="margin: 5px 0px;">
Points scaled by <b>{featurePointSizeProp}</b>
</div>
{/if}
{#if demoMode && featureProp && featurePropCount != null}
<!-- Selected feature property and value info -->
<div style="margin: 5px 0px;">
Analyzing property <b>{featureProp}</b> by <b>{displayToggles.vizMode}</b>
</div>
<!-- Histogram for demo mode -->
{#if displayToggles.vizMode === 'range'}
<div class="hideOnMobilePortrait">
<FeaturePropHistogram
showHeader={false}
minFilter={featurePropMinFilter}
maxFilter={featurePropMaxFilter}
valueCounts={sortedFeaturePropValueCounts}
valueColorFunction={featurePropValueColorFunction}
/>
</div>
{:elseif displayToggles.vizMode === 'rank' && featurePropValueCounts}
<!-- Top values list -->
<div class="hideOnMobilePortrait">
<FeaturePropTopValues
showHeader={false}
prop={featureProp}
bind:propValue="featurePropValue"
bind:valueSort="featurePropValueSort"
valueCounts={sortedFeaturePropValueCounts}
valueColorFunction={featurePropValueColorFunction}
/>
</div>
{:elseif displayToggles.vizMode === 'property'}
<!-- Top values list -->
<div class="hideOnMobilePortrait">
<FeaturePropTopValues
showHeader={false}
prop={featureProp}
bind:propValue="featurePropValue"
bind:valueSort="featurePropValueSort"
valueCounts={sortedFeaturePropValueCounts}
valueColorFunction={featurePropValueColorFunction}
/>
</div>
{/if}
{/if}
</div>
<div id="viz" class="panel hideOnMobilePortrait" class:hideInDemoMode="demoMode">
<div>
<!-- Selected feature property stats -->
{#if featureProp && featurePropCount != null}
<div style="margin: 5px 0 5px 0;" class="hideOnMobile">
<div>{featurePropCount} unique values in the viewport</div>
{#if featurePropMin != null}
<div>min: {featurePropMin}, median: {featurePropMedian}, max: {featurePropMax}</div>
<div>
μ: {featurePropMean.toFixed(2)},
σ: {featurePropStdDev.toFixed(2)},
{featurePropSigma.toFixed(2)}% ({featurePropSigmaFloor.toFixed(2)} - {featurePropSigmaCeiling.toFixed(2)})
</div>
{/if}
</div>
{/if}
<!-- Color mode selector -->
{#if displayToggles}
<div>
Analyze by
<select bind:value="displayToggles.vizMode" on:change="updateFeaturePropValueSort()">
{#each Object.keys(vizModes) as mode}
{#if featureProp || !vizModeUsesProperty(mode)}
<option value="{mode}">{vizModes[mode].label || mode}</option>
{/if}
{/each}
</select>
</div>
{/if}
{#if sortedUniqueFeaturePropsSeen.length > 0 && vizModeUsesProperty(displayToggles.vizMode)}
<!-- Visualize property selector -->
<div class="property_selector">
<span style="flex: 0 0 auto; margin-right: 5px; width: 115px;">Visualize by property</span>
<select style="flex: 1 1 auto; width: 100%;" bind:value="featureProp">
<option value=""></option>
<!-- JSON.stringify is a hint to help Svelte uniquely identify the object values -->
<!-- see https://v2.svelte.dev/guide#keyed-each-blocks -->
{#each sortedUniqueFeaturePropsSeen as [prop] (JSON.stringify(prop))}
<option value="{prop}">{prop}</option>
{/each}
</select>
</div>
<!-- Filter value selector -->
{#if featureProp && featurePropValueCounts}
<div class="property_selector">
<span style="flex: 0 0 auto; margin-right: 5px; width: 115px;">Filter by value</span>
<select style="flex: 1 1 auto; width: 100%;" bind:value="featurePropValue">
<option value=""></option>
{#each featurePropValueCounts as [value, count]}
<option value="{value}">({count}x) {value}</option>
{/each}
</select>
</div>
{/if}
{/if}
{#if featureProp && featurePropCount != null}
<!-- Pattern selector -->
{#if displayToggles}
<div class="property_selector">
<span style="flex: 0 0 auto; margin-right: 5px; width: 115px;">Pattern</span>
<select style="flex: 1 1 auto; width: 100%;" bind:value="displayToggles.pattern">
{#each patternOptions as pattern}
<option value="{pattern}">{pattern}</option>
{/each}
</select>
</div>
{#if displayToggles.pattern}
<div class="property_selector">
<span style="flex: 0 0 auto; margin-right: 5px; width: 115px;">Pattern color</span>
<input style="flex: 1 1 auto; width: 100%;" type="color" bind:value="displayToggles.patternColor">
</div>
{/if}
{/if}
<!-- Color palette and range filters -->
{#if showFeaturePropPalette(displayToggles.vizMode)}
<div class="hideOnMobile">
Color palette
<select bind:value="featurePropPaletteName">
{#each Object.keys(colorPalettes) as palette}
<option value="{palette}">{palette}</option>
{/each}
</select>
<label>
<input type="checkbox" bind:checked="featurePropPaletteFlip">
Flip
</label>
</div>
{#if featurePropMin != null}
{#if useFeaturePropRangeLimit(displayToggles.vizMode)}
<div>
Limit values:
<select bind:value="featurePropRangeFilter" on:change="updateFeaturePropRangeFilter(this.value)">
<option value="0">all</option>
<option value="4">sigma 4</option>
<option value="3">sigma 3</option>
<option value="2">sigma 2</option>
<option value="1">sigma 1</option>
<option value="custom" class="hideOnMobile">custom</option>
</select>
<input class="range_filter hideOnMobile" type="text" bind:value="featurePropMinFilterInput" placeholder="min" on:input="updateFeaturePropRangeFilter('custom')" on:keydown="event.stopPropagation()">
<input class="range_filter hideOnMobile" type="text" bind:value="featurePropMaxFilterInput" placeholder="max" on:input="updateFeaturePropRangeFilter('custom')" on:keydown="event.stopPropagation()">
</div>
<label style="margin-bottom: 5px;">
<input type="checkbox" bind:checked="featurePropHideOutliers">
Hide values outside range
</label>
{#if featurePropMostlyNumeric}
<FeaturePropHistogram
minFilter={featurePropMinFilter}
maxFilter={featurePropMaxFilter}
valueCounts={sortedFeaturePropValueCounts}
valueColorFunction={featurePropValueColorFunction}
/>
{/if}
{/if}
{/if}
{/if}
{/if}
</div>
{#if sortedUniqueFeaturePropsSeen.length > 0}
<!-- Label property selector -->
<div class="property_selector">
<span style="flex: 0 0 auto; margin-right: 5px; width: 115px;">Label features by</span>
<select style="flex: 1 1 auto; width: 100%;" bind:value="displayToggles.label">
<option value=""></option>
{#each sortedUniqueFeaturePropsSeen as [prop]}
<option value="{prop}">{prop}</option>
{/each}
</select>
</div>
<!-- Point size property selector -->
<div class="property_selector">
<span style="flex: 0 0 auto; margin-right: 5px; width: 115px;">Scale point size by</span>
<select style="flex: 1 1 auto; width: 100%;" bind:value="featurePointSizeProp">
<option value=""></option>
{#each sortedUniqueFeaturePropsSeen as [prop]}
<!-- {#if isPropNumeric(parsePropStack(prop), { featurePropTypesCache, featuresInViewport, featurePropNumericThreshold })} -->
<option value="{prop}">{prop}</option>
<!-- {/if} -->
{/each}
</select>
</div>
<!-- Point min/max pixel size -->
{#if featurePointSizeProp}
<div class="property_selector hideOnMobile">
<span style="flex: 0 0 auto; margin-right: 5px; width: 115px;">Point size (px):</span>
<input style="flex: 1 1 auto; width: 100%;" class="range_filter" type="text" bind:value="featurePointSizeDisplayRange[0]" placeholder="min" on:keydown="event.stopPropagation()">
<input style="flex: 1 1 auto; width: 100%;" class="range_filter" type="text" bind:value="featurePointSizeDisplayRange[1]" placeholder="max" on:keydown="event.stopPropagation()">
</div>
{/if}
{/if}
{#if !(featureProp && featurePropCount != null)}
Select a feature property to analyze, from the property list or by clicking on an individual feature.
{/if}
<!-- clustering property selector -->
{#if sortedUniqueFeaturePropsSeen.length > 0 && displayToggles.clustering > 0}
<div style="display: flex; flex-direction: row; align-items: center; margin: 5px 0px;">
<span style="flex: 0 0 auto; margin-right: 5px;">Cluster features by</span>
<select style="flex: 1 1 auto; width: 100%;" bind:value="displayToggles.clusteringProp">
<option value=""></option>
{#each sortedUniqueFeaturePropsSeen as [prop]}
<option value="{prop}">{prop}</option>
{/each}
</select>
</div>
{/if}
<!-- Top values list -->
{#if featureProp && featurePropValueCounts}
<div class="hideOnMobile">
<FeaturePropTopValues
prop={featureProp}
bind:propValue="featurePropValue"
bind:valueSort="featurePropValueSort"
valueCounts={sortedFeaturePropValueCounts}
valueColorFunction={featurePropValueColorFunction}
/>
</div>
{/if}
</div>
</div>
<div id="controls_right" class="column hideOnMobile" class:hideInDemoMode="demoMode">
<div id="tag_summary" class="panel">
<table id="tag_stats">
{#if featuresInViewport.length}
<tr><td>features in viewport</td><td>{featuresInViewport.length}</td></tr>
{/if}
{#if numFeatureTagsInViewport != null}
<tr><td>feature tags in viewport</td><td>{numFeatureTagsInViewport}</td></tr>
{/if}
<tr><td>unique tags in viewport</td><td>{uniqueTagsInViewport.size}</td></tr>
<tr><td>unique tags seen</td><td>{uniqueTagsSeen.size}</td></tr>
</table>
<div id="tags_filtered">
filtering by tags:<br>
{#if tagFilterList.length > 0}
{tagFilterList.join(', ')}<br><br>
{:else}
<i>no tags filtered<br><br></i>
{/if}
</div>
<div style="color:blue;" id="clear_filters" on:click="set({ tagFilterList: [] })">CLEAR TAG FILTERS</div>
<div id="and_or">
<input type="radio" g="and_or" value="or" bind:group='tagFilterAndOr'>or
<input type="radio" name="and_or" value="and" bind:group='tagFilterAndOr'>and<br>
</div>
</div>
<div id="tag_panel" class="panel">
<span style="color:blue;" on:click="toggleTagFilterViewport()">
{#if tagFilterViewport}
[show all tags seen]
{:else}
[only show tags in view]
{/if}
</span>
<span style="color:blue;" on:click="toggleTagFilterAt()">
{#if tagFilterAt}
[show all tag names]
{:else}
[only show @ tags]
{/if}
</span>
<span style="color:blue;" on:click="toggleTagSort()">
[sort by {nextTagSort}]
</span>
<div id="tags">
<div>
<input id="tag_search" type="text" bind:value="tagFilterSearch" placeholder="Filter tags" on:keydown="event.stopPropagation()">
</div>
<!-- The JSON.stringify gives Svelte a way to uniquely identify the full tag info.
This ensures that the correct checkboxes stay checked when the list is re-ordered
(for instance when tag counts change). See https://svelte.technology/guide#keyed-each-blocks.
-->
{#each tagDisplayList.slice(0, 500) as tag (JSON.stringify(tag))}
<label>
<input type="checkbox" value="{tag[0]}" bind:group='tagFilterList'>
({tag[1]}x) {tag[0]}
</label>
<br>
{/each}
{#if tagDisplayList.length > 500}
<i>Displaying the top 500 tags of {tagDisplayList.length} total</i>
{/if}
</div>
</div>
<!-- property search UI-->
{#if spaceInfo && spaceInfo.properties}
<div id="properties" class="panel hideOnMobile">
<PropertySearchList
properties={spaceInfo.properties}
bind:propertySearch="propertySearch"
/>
</div>
{/if}
</div>
<!-- feature popup content, hidden in the main UI and synced to the Leaflet popup -->
<div style="display: none">
<div id="popupContent" style="margin-top: 18px;">
<FeaturePopup
feature={feature}
featureProp={featureProp}
featurePinned={featurePinned}
featurePropValue={featurePropValue}
on:selectProp="setFeatureProp({
featureProp: (event.prop !== featureProp ? event.prop : null),
featurePropValue: ''
})"
on:selectValue="setFeatureProp({
featureProp: event.prop,
featurePropValue: (event.value !== featurePropValue ? event.value : '')
})"
/>
</div>
</div>
<script>
import { basemaps, getBasemapScene, getBasemapName, getDefaultBasemapName, getNextBasemap,
projections, getProjectionScene, getDefaultProjectionName, isProjectable, } from './basemaps';
import { colorPalettes } from './colorPalettes';
import { vizModes, vizHelpers } from './vizModes';
import { displayOptions, defaultDisplayOptionValue } from './displayOptions';
import { calcFeaturePropertyStats } from './stats';
import { parseNestedObject, parsePropStack, formatPropStack, parseNumber, mostlyNumeric, lookupProperty, PROP_TYPES } from './utils';
export default {
data() {
return {
// set these to empty strings (not null) to get placeholder text in input
spaceId: '',
token: '',
spaceInfo: null,
hexbinInfo: {},
gisInfo: {},
demoMode: false, // display collapsed UI demo mode
feature: null,
featureProp: null,
featurePropValue: '',
featurePropCount: null,
featurePropValueCounts: null,
featurePropValueSort: 'count',
featurePropNumericThreshold: 80, // minimum % of values that must be numeric to support range, etc.
featurePropCheckNumeric: null, // the property name that was active when we last checked for numeric-ness
featurePropPaletteName: 'viridis', // TODO: move palette to import
featurePropPaletteFlip: false,
featurePropMin: null,
featurePropMax: null,
featurePropMinFilterInput: '', // use empty string to get input placeholder
featurePropMaxFilterInput: '', // use empty string to get input placeholder
featurePropMean: null,
featurePropMedian: null,
featurePropStdDev: null,
featurePropSigma: null,
featurePropSigmaFloor: null,
featurePropSigmaCeiling: null,
featurePointSizeDisplayRange: [4, 20],
featurePointSizeProp: '', // setting this to null breaks the point toggle
// these are params
// clustering: null,
// quadCountmode: null,
// quadRez: 4,
// voronoi: 'off',
tagsWithCountsInViewport: [],
tagFilterList: [],
tagFilterAndOr: 'or',
tagFilterViewport: false,
tagFilterAt: false,
tagSort: 'count',
tagFilterSearch: '', // set these to empty strings (not null) to get placeholder text in input
propertySearch: {},
propertySearchOverride: null,
featuresInViewport: [],
featurePropTypesCache: {}, // cache of inferred feature property types
uniqueTagsSeen: new Set(),
uniqueFeaturePropsSeen: new Map(),
displayToggles: null,
vizModes, // need to reference here to make accessible to templates and tangram functions
colorPalettes, // need to reference here to make accessible to templates and tangram functions
vizHelpers, // need to reference here to make accessible to templates and tangram functions
basemaps, // need to reference here to make accessible to templates
projections, // need to reference here to make accessible to templates
isProjectable, // needa to reference here to make accessible to templates
}
},
components: {
FeaturePropHistogram: './FeaturePropHistogram.svelte',
FeaturePropTopValues: './FeaturePropTopValues.svelte',
FeaturePopup: './FeaturePopup.svelte',
PropertySearchList: './PropertySearchList.svelte'
},
computed: {
basemapScene: ({ basemap, projection }) => {
if (!isProjectable(basemap)) {
projection = getDefaultProjectionName();
}
const scene = getBasemapScene(basemap, projection);
if (scene) {
scene.global = {
...scene.global,
vizModes
};
}
return scene;
},
// apply range filters if needed
featurePropMinFilter: ({ displayToggles, featurePropMin, featurePropMinFilterInput }) => {
// only use if color mode supports range filter
if (displayToggles && useFeaturePropRangeLimit(displayToggles.vizMode)) {
const val = parseNumber(featurePropMinFilterInput);
if (typeof val === 'number' && !isNaN(val)) {
return val;
}
}
return featurePropMin;
},
featurePropMaxFilter: ({ displayToggles, featurePropMax, featurePropMaxFilterInput }) => {
// only use if color mode supports range filter
if (displayToggles && useFeaturePropRangeLimit(displayToggles.vizMode)) {
const val = parseNumber(featurePropMaxFilterInput);
if (typeof val === 'number' && !isNaN(val)) {
return val;
}
}
return featurePropMax;
},
featurePropRows: ({ feature }) => feature && parseNestedObject(feature.properties),
featurePropPalette: ({ featurePropPaletteName }) => {
return colorPalettes[featurePropPaletteName];
},
// update stats for current features and point size property (if one selected)
featurePointSizePropStats: ({ featuresInViewport, featurePointSizeProp }) => {
return calcFeaturePropertyStats(featuresInViewport, featurePointSizeProp);
},
// how point sizes are mapped to feature property values
featurePointSizeRange: ({ featurePointSizePropStats, featurePointSizeDisplayRange }) => {
return [
// value range for features in viewport
featurePointSizePropStats.min, featurePointSizePropStats.max,
// pixel size range to map these to
parseFloat(featurePointSizeDisplayRange[0]) || 5, parseFloat(featurePointSizeDisplayRange[1]) || 20
];
},
sortedFeaturePropValueCounts: ({ featurePropValueCounts, featurePropValueSort }) => {
if (!featurePropValueCounts) {
return [];
}
if (featurePropValueSort === 'values') {
// copy and re-sort on value (descending) if needed
return Array.from(featurePropValueCounts).sort((a, b) => {
// try to get a number
let an = parseNumber(a[0]);
let bn = parseNumber(b[0]);
// sort nulls and NaNs to the bottom
an = (an == null || isNaN(an)) ? -Infinity : an;
bn = (bn == null || isNaN(bn)) ? -Infinity : bn;
return bn - an; // descending sort
});
}
return featurePropValueCounts; // return original/unmodified values
},
// function to calculate color for a feature prop value, based on current selection state
featurePropValueColorFunction: ({
displayToggles,
featurePropMinFilter, featurePropMaxFilter,
featurePropPalette, featurePropPaletteFlip, featurePropValueCounts, vizHelpers }) => {
return (value) => {
const vizMode = displayToggles.vizMode;
if (vizModes[vizMode] && vizModes[vizMode].color) {
return vizModes[vizMode].color(
value, {
displayToggles,
featurePropMinFilter, featurePropMaxFilter,
featurePropPalette, featurePropPaletteFlip, featurePropValueCounts,
vizHelpers
}
);
}
return 'rgba(127, 127, 127, .25)'; // color for null values?
};
},
featurePropMostlyNumeric: ({ featureProp, featurePropTypesCache, featuresInViewport, featurePropNumericThreshold }) => {
return isPropNumeric(featureProp, { featurePropTypesCache, featuresInViewport, featurePropNumericThreshold });
},
featurePropValueCountHash: ({ featurePropValueCounts }) => featurePropValueCounts && hashString(JSON.stringify(featurePropValueCounts)),
nextTagSort: ({ tagSort }) => (tagSort === 'count' ? 'name' : 'count'),
tagsWithCountsInViewport: ({ featuresInViewport }) => {
// grab the tags from Tangram's viewport tiles
let tagsViewport = [];
featuresInViewport.forEach(x => {
if (x.properties['@ns:com:here:xyz'] && x.properties['@ns:com:here:xyz'].tags) {
tagsViewport.push(...x.properties['@ns:com:here:xyz'].tags);
}
})
const tagsWithCountsInViewport =
Object.entries(
featuresInViewport
.filter(f => f.properties['@ns:com:here:xyz'] && f.properties['@ns:com:here:xyz'].tags)
.flatMap(f => f.properties['@ns:com:here:xyz'].tags)
.reduce((tagCounts, tag) => {
tagCounts[tag] = tagCounts[tag] ? tagCounts[tag] + 1 : 1;
return tagCounts;
}, {}))
.sort((a, b) => b[1] > a[1] ? 1 : (b[1] > a[1] ? -1 : 0));
return tagsWithCountsInViewport;
},
uniqueTagsInViewport: ({ tagsWithCountsInViewport }) => new Set(tagsWithCountsInViewport.map(v => v[0])),
sortedUniqueFeaturePropsSeen: ({ uniqueFeaturePropsSeen }) => {
// alphabetical sort, but with @ properties at bottom
return Array.from(uniqueFeaturePropsSeen.keys())
.sort((a, b) => a[0] === '@' ? 1 : b[0] === '@' ? -1 : a[0] > b[0] ? 1 : a[0] < b[0] ? -1 : 0)
.map(prop => [prop, uniqueFeaturePropsSeen.get(prop)]);
},
numFeatureTagsInViewport: ({ tagsWithCountsInViewport }) => tagsWithCountsInViewport.reduce((acc, cur) => acc + cur[1], 0),
// build the list of tags for display with checkboxes
tagDisplayList: ({ tagsWithCountsInViewport, tagSort, tagFilterList, tagFilterViewport, tagFilterAt, tagFilterSearch, uniqueTagsSeen }) => {
const tagCountMap = new Map();
// optional filters
// e.g. remove tags without an @ if desired, or text search
const tagFilterFunc = tag => {
const at = tagFilterAt ? tag.includes('@') : true;
const search = (tagFilterSearch && tagFilterSearch.length >= 3) ? tag.includes(tagFilterSearch) : true;
return (at && search) || tagFilterList.indexOf(tag) > -1; // always include selected tags
};
// add any tags that are selected, but not currently in the viewport
// this also handles cases where an impossible tag combo is selected (postcode 98125 AND postcode 98122),
// but we want those tags to still show up in the list so they can be de-selected
// note this ignores filters to ensure these tags can always be seen/de-selected
tagFilterList.forEach(tag => tagCountMap.set(tag, 0));
// add all uniquely seen tags that aren't currently in the viewport
if (!tagFilterViewport) {
uniqueTagsSeen
.forEach(tag => {
if (tagFilterFunc(tag)) {
tagCountMap.set(tag, 0);
}
});
}
// add tags currently in the viewport
tagsWithCountsInViewport
.filter(([tag]) => tagFilterFunc(tag))
.forEach(([tag, count]) => tagCountMap.set(tag, count));
// convert to array entries for sorting
let tagCounts = [...tagCountMap.entries()];
// sort tags as desired
if (tagSort === 'name') {
tagCounts.sort((a, b) => {
if (a[0] === b[0]) {
return a[1] < b[1] ? 1 : -1;
}
return a[0] < b[0] ? 1 : (a[0] > b[0] ? -1 : 0);
});
}
else if (tagSort === 'count') {
tagCounts.sort((a, b) => {
if (a[1] === b[1]) {
return a[0] < b[0] ? 1 : (a[0] > b[0] ? -1 : 0);
}
return a[1] < b[1] ? 1 : -1;
});
}
return tagCounts;
},
// format selected tags as a query parameter for XYZ tile requests
tagFilterQueryParam: ({ tagFilterList, tagFilterAndOr }) => {
if (tagFilterList.length === 0) {
return null;
}
if (tagFilterAndOr === 'and') {
return tagFilterList.join('+');
}
else {
return tagFilterList.join(',');
}
},
// format property searches as query parameters for XYZ tile requests
propertySearchQueryParams: ({ propertySearch }) => {
return Object.entries(propertySearch)
.reduce((params, [prop, { op, equals, min, max }]) => {
const p = `p.${prop}`;
if (op === 'equals' && equals) {
params.push([p, equals]);
}
else if (op === 'range') {
min = parseFloat(min);
max = parseFloat(max);
if (typeof min === 'number' && !isNaN(min)) {
params.push([p, `gt=${min}`]);
}
if (typeof max === 'number' && !isNaN(max)) {
params.push([p, `lt=${max}`]);
}
}
return params;
}, []);
},
queryParams: ({
spaceId, token, basemap, projection,
demoMode,
displayToggles,
featureProp,
featurePropValue,
featurePropPaletteName, featurePropPaletteFlip,
featurePropRangeFilter,
featurePropMinFilterInput,
featurePropMaxFilterInput,
featurePropValueSort,
featurePropHideOutliers,
featurePointSizeProp,
featurePointSizeDisplayRange,
tagFilterQueryParam,
propertySearch
}) => {
const params = new URLSearchParams();
if (spaceId) {
params.set('space', spaceId);
}
if (token) {
params.set('token', token);
}
params.set('basemap', basemap);
params.set('projection', projection);
params.set('demo', demoMode ? 1 : 0);
for(const p in displayToggles) {
if (displayToggles[p] != null) {
params.set(p, displayToggles[p]);
}
}
if (tagFilterQueryParam) {
params.set('tags', tagFilterQueryParam);
}
if (featureProp) {
params.set('property', featureProp);
}
if (featurePropValue) {
params.set('value', featurePropValue);
}
params.set('palette', featurePropPaletteName);
params.set('paletteFlip', featurePropPaletteFlip);
// save range filter (if current color mode supports it)
if (featurePropRangeFilter && displayToggles && useFeaturePropRangeLimit(displayToggles.vizMode)) {
params.set('rangeFilter', featurePropRangeFilter);
if (featurePropRangeFilter === 'custom') {
params.set('rangeFilterMin', featurePropMinFilterInput);
params.set('rangeFilterMax', featurePropMaxFilterInput);
}
}
params.set('sort', featurePropValueSort);
params.set('hideOutliers', featurePropHideOutliers);
params.set('pointSizeProp', featurePointSizeProp);
params.set('pointSizeRange', JSON.stringify(featurePointSizeDisplayRange));
params.set('propertySearch', JSON.stringify(propertySearch));
return params;
}
},
onstate({ changed, current, previous }) {
// update globally seen tags
if (changed.uniqueTagsInViewport) {
this.set({
uniqueTagsSeen: new Set([...current.uniqueTagsSeen, ...current.uniqueTagsInViewport].filter(x => x))
});
}
// check if globally seen properties need to be updated
const uniqueFeaturePropsSeen = new Map(current.uniqueFeaturePropsSeen); // get currently known props
let updateUniqueFeaturePropsSeen = false;
// seed globally seen properties from space stats
if (changed.spaceInfo && current.spaceInfo) {
Object.entries(current.spaceInfo.properties)
.forEach(([prop, value]) => {
const propStack = prop.split(':'); // XYZ API uses ':' delimiter
prop = formatPropStack(propStack);
uniqueFeaturePropsSeen.set(prop, {
...value,
propStack
});
});
updateUniqueFeaturePropsSeen = true;
}
// update globally seen properties from current feature set
if (changed.featuresInViewport) {
current.featuresInViewport.forEach(feature => {
parseNestedObject(feature.properties)
.filter(p => !p.prop.startsWith('$')) // don't include special tangram context properties
.filter(p => !uniqueFeaturePropsSeen.has(p.prop)) // skip properties we already know about
.forEach(p => {
uniqueFeaturePropsSeen.set(p.prop, { propStack: p.propStack }); // add new props
});
});
updateUniqueFeaturePropsSeen = true;
// reset property type cache (re-evaluatate property types when new features are available)
this.set({ featurePropTypesCache: {} });
}
// update feature props if needed
if (updateUniqueFeaturePropsSeen) {
this.set({ uniqueFeaturePropsSeen });
}
// Apply Tangram scene updates based on state change
if (current.spaceInfo &&
(changed.basemapScene || changed.spaceInfo || changed.projection)) {
this.fire('loadScene', current);
}
if (changed.displayToggles ||
changed.tagFilterQueryParam ||
changed.propertySearchQueryParams ||
changed.hexbinInfo ||
changed.gisInfo ||
changed.featureProp ||
changed.featurePropValue ||
changed.featurePointSizeProp ||
changed.featurePointSizeDisplayRange ||
changed.featurePropPalette ||
changed.featurePropPaletteFlip ||
changed.featurePropValueCountHash ||
changed.featurePropMinFilter ||
changed.featurePropMaxFilter ||
changed.featurePropHideOutliers) {
this.fire('updateScene', current);
}
// mark space as loaded
// used to hide UI during load (maybe replace with promise)
if (changed.spaceInfo && current.spaceInfo) {
this.set({
spaceLoading: false
});
}
// update query string as needed
if (changed.queryParams) {
this.fire('updateQueryString', current);
}
},
onupdate({ changed, current, previous }) {
// note: svelte needs these checks in onupdate instead of onstate because of interdependencies when
// calling a set() from inside onstate that triggers another set(); these issues are reportedly fixed in v3,
// separating this check out into onupdate for now