feat: add leaflet-icon component for custom marker icons
New <leaflet-icon> element wraps L.Icon / L.DivIcon and dispatches
icon-changed custom events to parent markers. Marker listens for
the event and queries for existing icon children on connect.
Fix: use kebab-case attribute names (via PROPS table spec.attr) in
applyIcon() instead of camelCase, and guard against empty iconUrl
to avoid L.icon({}) throwing.
main
Buddy
3 months ago
parent
c283632262
commit
f64b4e70de
@ -0,0 +1,317 @@
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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>Leaflet Components Demo</title>
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<style>
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* { box-sizing: border-box; }
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body {
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margin: 0;
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padding: 20px;
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font-family: sans-serif;
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}
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.two-pane {
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display: flex;
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gap: 16px;
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margin-bottom: 16px;
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height: 600px;
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}
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.pane {
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border: 1px solid #ddd;
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border-radius: 6px;
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overflow: hidden;
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display: flex;
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flex-direction: column;
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}
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.pane-header {
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padding: 10px 14px;
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font-weight: 600;
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font-size: 13px;
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background: #f0f0f0;
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border-bottom: 1px solid #ddd;
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flex-shrink: 0;
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}
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.pane-body {
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flex: 1;
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overflow-y: auto;
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padding: 10px 14px;
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}
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#tree-pane {
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width: 280px;
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min-width: 200px;
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}
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#editor-pane {
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flex: 1;
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min-width: 300px;
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}
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/* ── Tree styles ── */
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.tree-node {
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margin: 2px 0;
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}
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.tree-row {
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display: flex;
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align-items: center;
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gap: 6px;
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padding: 4px 6px;
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border-radius: 4px;
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cursor: pointer;
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font-family: monospace;
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font-size: 13px;
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}
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.tree-row:hover {
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background: #e8e8e8;
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}
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.tree-row.selected {
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background: #dbeafe;
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font-weight: 600;
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}
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.tree-row .tag {
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color: #2563eb;
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}
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.tree-children {
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margin-left: 18px;
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border-left: 1px solid #ddd;
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padding-left: 4px;
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}
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.tree-row .remove-btn {
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margin-left: auto;
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background: none;
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border: none;
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color: #999;
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cursor: pointer;
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font-size: 14px;
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line-height: 1;
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padding: 0 2px;
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}
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.tree-row .remove-btn:hover {
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color: #dc2626;
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}
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.tree-row .add-child-btn {
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background: none;
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border: none;
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color: #999;
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cursor: pointer;
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font-size: 14px;
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line-height: 1;
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padding: 0 2px;
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margin: 0 0 0 4px;
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display: inline-flex;
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align-items: center;
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justify-content: center;
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}
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.tree-row .add-child-btn:hover {
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color: #22c55e;
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}
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.add-child-btn {
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display: inline-flex;
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align-items: center;
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gap: 4px;
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margin-top: 6px;
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padding: 4px 10px;
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font-size: 12px;
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border: 1px dashed #aaa;
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border-radius: 4px;
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background: none;
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color: #666;
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cursor: pointer;
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}
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.add-child-btn:hover {
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border-color: #3b82f6;
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color: #2563eb;
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}
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/* ── Editor styles ── */
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.editor-empty {
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color: #999;
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font-style: italic;
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font-size: 13px;
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}
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.editor-section {
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margin-bottom: 14px;
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}
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.editor-section h4 {
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margin: 0 0 8px;
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font-size: 11px;
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text-transform: uppercase;
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letter-spacing: 0.5px;
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color: #888;
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}
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.editor-row {
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display: flex;
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align-items: center;
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gap: 8px;
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margin-bottom: 6px;
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}
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.editor-row label {
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display: inline-flex;
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align-items: center;
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gap: 4px;
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font-size: 13px;
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color: #555;
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min-width: 120px;
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}
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.editor-row label:has(input[type="checkbox"]) {
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font-family: monospace;
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font-size: 12px;
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min-width: auto;
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}
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.editor-row input[type="number"],
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.editor-row input[type="text"] {
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flex: 1;
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max-width: 200px;
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padding: 5px 8px;
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border: 1px solid #ccc;
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border-radius: 4px;
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font-size: 13px;
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font-family: monospace;
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}
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.editor-row input:focus {
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outline: none;
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border-color: #66f;
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}
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.editor-row input[type="checkbox"] {
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width: 16px;
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height: 16px;
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}
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.pick-btn {
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padding: 4px 8px;
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font-size: 11px;
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border: 1px solid #22c55e;
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border-radius: 4px;
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background: #f0fdf4;
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color: #16a34a;
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cursor: pointer;
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white-space: nowrap;
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}
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.pick-btn:hover {
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background: #dcfce7;
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}
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.pick-btn.picking {
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background: #16a34a;
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color: white;
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animation: pulse 1s infinite;
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}
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@keyframes pulse {
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0%, 100% { opacity: 1; }
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50% { opacity: 0.7; }
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}
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/* ── Add-child modal ── */
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.add-child-form {
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margin-top: 10px;
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padding: 10px;
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background: #fafafa;
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border: 1px solid #ddd;
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border-radius: 6px;
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}
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.add-child-form h5 {
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margin: 0 0 8px;
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font-size: 12px;
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color: #555;
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}
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.add-child-form select,
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.add-child-form input {
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width: 100%;
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padding: 5px 8px;
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border: 1px solid #ccc;
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border-radius: 4px;
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font-size: 13px;
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margin-bottom: 6px;
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}
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.add-child-form .form-actions {
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display: flex;
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gap: 8px;
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margin-top: 8px;
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}
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.add-child-form button {
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padding: 6px 14px;
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border-radius: 4px;
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font-size: 13px;
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cursor: pointer;
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border: 1px solid #ccc;
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background: white;
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}
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.add-child-form button.primary {
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background: #2563eb;
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color: white;
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border-color: #2563eb;
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}
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.add-child-form button.primary:hover {
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background: #1d4ed8;
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}
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.add-child-form button.cancel {
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background: #f5f5f5;
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}
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leaflet-map {
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height: 500px;
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border: 1px solid #ccc;
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display: block;
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}
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</style>
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</head>
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<body>
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<h1>Leaflet Web Components</h1>
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<leaflet-map id="map" lat="51.50" lng="-0.09" zoom="13">
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<leaflet-tile-layer
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url="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
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attribution="© <a href='https://www.openstreetmap.org/copyright'>OpenStreetMap</a> contributors"
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>
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</leaflet-tile-layer>
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<leaflet-marker lat="51.5" lng="-0.09">
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<leaflet-icon
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icon-url="https://leafletjs.com/examples/custom-icons/leaf-green.png"
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icon-anchor="[22, 94]"
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icon-size="[38, 95]"
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popup-anchor="[-3, -76]"
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shadow-url="https://leafletjs.com/examples/custom-icons/leaf-shadow.png"
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shadow-anchor="[4, 62]"
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shadow-size="[50, 64]"
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></leaflet-icon>
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<leaflet-popup>I am a green leaf.</leaflet-popup>
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</leaflet-marker>
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<leaflet-marker lat="51.495" lng="-0.083">
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<leaflet-icon
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icon-url="https://leafletjs.com/examples/custom-icons/leaf-red.png"
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icon-anchor="[22, 94]"
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icon-size="[38, 95]"
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popup-anchor="[-3, -76]"
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shadow-anchor="[4, 62]"
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shadow-size="[50, 64]"
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shadow-url="https://leafletjs.com/examples/custom-icons/leaf-shadow.png"
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></leaflet-icon>
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<leaflet-popup>I am a red leaf.</leaflet-popup>
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</leaflet-marker>
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<leaflet-marker lat="51.49" lng="-0.1">
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<leaflet-icon
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icon-url="https://leafletjs.com/examples/custom-icons/leaf-orange.png"
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icon-anchor="[22, 94]"
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icon-size="[38, 95]"
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shadow-url="https://leafletjs.com/examples/custom-icons/leaf-shadow.png"
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popup-anchor="[-3, -76]"
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shadow-anchor="[4, 62]"
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shadow-size="[50, 64]"
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></leaflet-icon>
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<leaflet-popup>I am a orange leaf.</leaflet-popup>
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</leaflet-marker>
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</leaflet-map>
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<script type="importmap">
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{
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"imports": {
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"leaflet": "/node_modules/leaflet/dist/leaflet-src.esm.js"
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}
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}
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</script>
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<script type="module" src="/dist/index.js"></script>
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<script type="module">
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</script>
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</body>
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</html>
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@ -0,0 +1,87 @@
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import { Icon, icon, divIcon, IconOptions, DivIconOptions } from 'leaflet';
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import { defineProps, str, on } from '../core/props.ts';
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import { WithProps } from '../core/utils.ts';
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const PROPS = defineProps({
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iconUrl: str(),
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iconRetinaUrl: str(),
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iconSize: str(),
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iconAnchor: str(),
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popupAnchor: str(),
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tooltipAnchor: str(),
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shadowUrl: str(),
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shadowRetinaUrl: str(),
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shadowSize: str(),
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shadowAnchor: str(),
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className: str(),
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div: on(),
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html: str(),
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bgPos: str(),
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});
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const JSON_KEYS = new Set([
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'iconSize',
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'iconAnchor',
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'popupAnchor',
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'tooltipAnchor',
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'shadowSize',
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'shadowAnchor',
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'bgPos',
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]);
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export class LeafletIcon extends WithProps(HTMLElement, PROPS) {
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#obj?: Icon;
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connectedCallback() {
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this.#applyIcon();
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this.dispatchEvent(
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new CustomEvent('icon-changed', {
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bubbles: true,
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detail: { icon: this.#obj },
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}),
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);
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}
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disconnectedCallback() {
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this.dispatchEvent(
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new CustomEvent('icon-changed', {
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bubbles: true,
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detail: { icon: null },
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}),
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);
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}
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attributeChangedCallback() {
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this.#applyIcon();
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if (!this.#obj) return;
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this.dispatchEvent(
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new CustomEvent('icon-changed', {
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bubbles: true,
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detail: { icon: this.#obj },
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}),
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);
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}
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get leafletObject() {
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return this.#obj;
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}
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#applyIcon() {
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const opts: Record<string, unknown> = {};
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for (const [key, spec] of Object.entries(PROPS)) {
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if (key === 'div') continue;
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const v = this.getAttribute(spec.attr);
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if (v === null) continue;
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opts[key] = JSON_KEYS.has(key) ? JSON.parse(v) : v;
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}
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if (this.hasAttribute('div')) {
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this.#obj = divIcon(opts as unknown as DivIconOptions) as unknown as Icon;
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} else if (opts.iconUrl) {
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this.#obj = icon(opts as unknown as IconOptions) as unknown as Icon;
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} else {
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this.#obj = undefined;
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}
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}
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}
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customElements.define('leaflet-icon', LeafletIcon);
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