137 lines
8.1 KiB
Plaintext
137 lines
8.1 KiB
Plaintext
component TreeView {
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outputs {
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select(payload: { item: object; value: string; sourceEvent?: Event })
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toggle(payload: { item: object; value: string; expanded: boolean; sourceEvent?: Event })
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expand(payload: { item: object; value: string; sourceEvent?: Event })
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collapse(payload: { item: object; value: string; sourceEvent?: Event })
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}
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props {
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title: string = "Tree View"
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description: string = ""
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items: unknown[] = []
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valueKey: string = "value"
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labelKey: string = "label"
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defaultExpanded: unknown[] = []
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selected: string = ""
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size: string = "default"
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color: string = "primary"
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class: string = ""
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}
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state expandedValues = defaultExpanded
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state selectedValue = selected
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functions {
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shared function nodeValue(item, index, parent) { return String(item[valueKey] || item.id || parent + index) }
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shared function isExpanded(value) { return expandedValues.includes(value) }
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client function toggleNode(item, value, sourceEvent, next, expanded) {
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next = expandedValues.slice()
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expanded = !next.includes(value)
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if (expanded) {
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next.push(value)
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} else {
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next = next.filter(function (entry) { return entry !== value })
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}
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expandedValues = next
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output.toggle({ item: item, value: value, expanded: expanded, sourceEvent: sourceEvent })
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if (expanded) {
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output.expand({ item: item, value: value, sourceEvent: sourceEvent })
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} else {
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output.collapse({ item: item, value: value, sourceEvent: sourceEvent })
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}
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}
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client function selectNode(item, value, sourceEvent) {
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selectedValue = value
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output.select({ item: item, value: value, sourceEvent: sourceEvent })
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}
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}
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view {
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<section {...attrs} data-ui-component="TreeView" class='wrn-tree-view {class}' data-wrn-owner="TreeView" data-wrn-part="root" data-wrn-component="TreeView" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}">
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{#if title}<strong class="wrn-tree-view__title" data-wrn-owner="TreeView" data-wrn-part="title" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}">{title}</strong>{/if}
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{#if description}<p class="wrn-tree-view__description" data-wrn-owner="TreeView" data-wrn-part="description" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}">{description}</p>{/if}
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<div class="wrn-tree-view__tree" role="tree" aria-label='{title}' data-wrn-roving="vertical" data-wrn-owner="TreeView" data-wrn-part="tree" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}">
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{#each items as item, index}
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<div class="wrn-tree-view__branch" role="none" data-wrn-owner="TreeView" data-wrn-part="branch" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}">
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<div class="wrn-tree-view__row" role="treeitem" aria-level="1" aria-expanded='{item.children && item.children.length ? isExpanded(nodeValue(item, index, "root-")) : ""}' aria-selected='{selectedValue === nodeValue(item, index, "root-") ? "true" : "false"}' data-wrn-owner="TreeView" data-wrn-part="row" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}">
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{#if item.children && item.children.length}
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<button type="button" class="wrn-tree-view__toggle" aria-label='{isExpanded(nodeValue(item, index, "root-")) ? "Collapse " + item[labelKey] : "Expand " + item[labelKey]}' @click='toggleNode(item, nodeValue(item, index, "root-"), event)' data-wrn-owner="TreeView" data-wrn-part="toggle" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}"><span class="icon-[lucide--chevron-right]" aria-hidden="true"></span></button>
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{:else}<span class="wrn-tree-view__toggle" aria-hidden="true" data-wrn-owner="TreeView" data-wrn-part="toggle" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}"></span>{/if}
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<button type="button" class="wrn-tree-view__node" data-wrn-roving-item @click='selectNode(item, nodeValue(item, index, "root-"), event)' data-wrn-owner="TreeView" data-wrn-part="node" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}">
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{#if item.icon}<span class='{item.icon}' aria-hidden="true"></span>{/if}<span>{item[labelKey]}</span>
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</button>
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</div>
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{#if item.children && item.children.length}
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<div class="wrn-tree-view__group" role="group" data-show='isExpanded(nodeValue(item, index, "root-"))' data-wrn-owner="TreeView" data-wrn-part="group" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}">
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{#each item.children as child, childIndex}
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<div class="wrn-tree-view__row" role="treeitem" aria-level="2" aria-selected='{selectedValue === nodeValue(child, childIndex, nodeValue(item, index, "root-") + "-") ? "true" : "false"}' data-wrn-owner="TreeView" data-wrn-part="row" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}">
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<span class="wrn-tree-view__toggle" aria-hidden="true" data-wrn-owner="TreeView" data-wrn-part="toggle" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}"></span>
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<button type="button" class="wrn-tree-view__node" data-wrn-roving-item @click='selectNode(child, nodeValue(child, childIndex, nodeValue(item, index, "root-") + "-"), event)' data-wrn-owner="TreeView" data-wrn-part="node" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}">
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{#if child.icon}<span class='{child.icon}' aria-hidden="true"></span>{/if}<span>{child[labelKey]}</span>
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</button>
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</div>
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{/each}
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</div>
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{/if}
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</div>
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{:empty}<p class="wrn-tree-view__empty" data-wrn-owner="TreeView" data-wrn-part="empty" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}">No tree items available.</p>{/each}
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</div>
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<slot />
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</section>
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}
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style {
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.wrn-tree-view { display: grid; gap: 0.5rem; color: var(--wrn-color-text); }
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.wrn-tree-view__title { font-size: 0.95rem; }
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.wrn-tree-view__description, .wrn-tree-view__empty { margin: 0; color: var(--wrn-color-muted); font-size: 0.8rem; }
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.wrn-tree-view__tree {
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display: grid;
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gap: 0.0625rem;
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padding: 0.3rem;
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border: 1px solid var(--wrn-color-border);
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border-radius: var(--wrn-radius);
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background: var(--wrn-color-surface);
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box-shadow: var(--wrn-shadow-1);
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}
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.wrn-tree-view__row { display: flex; min-width: 0; align-items: center; gap: 0.2rem; border-radius: var(--wrn-radius-sm); }
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.wrn-tree-view__row[aria-selected="true"] {
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background: color-mix(in srgb, var(--wrn-color-primary) 9%, var(--wrn-color-surface));
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box-shadow: inset 2px 0 0 var(--wrn-color-primary);
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}
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.wrn-tree-view__toggle { display: inline-grid; width: 1.8rem; height: 1.8rem; flex: none; padding: 0; place-items: center; border: 0; border-radius: 0.35rem; color: var(--wrn-color-muted); background: transparent; }
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button.wrn-tree-view__toggle { cursor: pointer; }
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.wrn-tree-view__toggle > span { width: 0.9rem; height: 0.9rem; transition: transform var(--wrn-motion-fast); }
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.wrn-tree-view__row[aria-expanded="true"] > .wrn-tree-view__toggle > span { transform: rotate(90deg); }
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.wrn-tree-view__node {
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display: flex;
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min-width: 0;
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flex: 1;
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align-items: center;
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gap: 0.45rem;
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padding: 0.375rem 0.5rem;
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border: 0;
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border-radius: calc(var(--wrn-radius-sm) - 2px);
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color: inherit;
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background: transparent;
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font: inherit;
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font-size: 0.8125rem;
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text-align: left;
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cursor: pointer;
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}
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.wrn-tree-view__node:hover, button.wrn-tree-view__toggle:hover {
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background: var(--wrn-color-surface-muted, var(--wrn-color-surface-2));
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}
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.wrn-tree-view__node:focus-visible, button.wrn-tree-view__toggle:focus-visible { outline: 2px solid var(--wrn-color-focus); outline-offset: -2px; }
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.wrn-tree-view__node > [class*="icon-"] {
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width: 1rem;
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height: 1rem;
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flex: none;
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color: var(--wrn-color-text-subtle, var(--wrn-color-muted));
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}
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.wrn-tree-view__group { display: grid; margin-left: 1.8rem; padding-left: 0.45rem; border-left: 1px solid var(--wrn-color-border); }
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}
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}
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