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annotate design_system/src/components/alert.js @ 270:358dd5950985

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sync production config on every deploy Always install the ignored repository .config into /etc/mrjunejune before promoting the new bundle. Co-authored-by: Copilot <[email protected]>
author MrJuneJune <me@mrjunejune.com>
date Fri, 07 Aug 2026 13:16:47 -0700
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1 /**
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2 * Presents a semantic status message with optional dismissal.
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3 *
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4 * @extends {HTMLElement}
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5 */
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6 export class ZenAlert extends HTMLElement {
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7 static get observedAttributes() {
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8 return ["dismissible", "tone"];
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9 }
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10
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11 connectedCallback() {
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12 if (!this._observer) {
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13 this._observer = new MutationObserver(() => this.sync());
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14 }
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15 this._observer.observe(this, { childList: true });
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16 this.sync();
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17 }
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18
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19 disconnectedCallback() {
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20 this._observer?.disconnect();
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21 this.unbindDismissControl();
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22 }
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23
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24 attributeChangedCallback() {
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25 this.sync();
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26 }
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27
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28 unbindDismissControl() {
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29 if (this._dismissControl && this._dismissHandler) {
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30 this._dismissControl.removeEventListener(
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31 "click",
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32 this._dismissHandler,
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33 );
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34 }
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35 this._dismissControl = null;
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36 this._dismissHandler = null;
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37 }
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38
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39 sync() {
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40 this.setAttribute(
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41 "role",
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42 this.getAttribute("tone") === "danger" ? "alert" : "status",
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43 );
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44
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45 let dismiss = this.querySelector(":scope > [data-zen-dismiss]");
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46 if (!this.hasAttribute("dismissible")) {
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47 this.unbindDismissControl();
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48 if (dismiss?.dataset.zenGenerated === "true") dismiss.remove();
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49 return;
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50 }
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51
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52 if (!dismiss) {
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53 dismiss = document.createElement("button");
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54 dismiss.type = "button";
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55 dismiss.dataset.zenDismiss = "";
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56 dismiss.dataset.zenGenerated = "true";
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57 dismiss.setAttribute("aria-label", "Dismiss message");
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58 const icon = document.createElement("zen-icon");
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59 icon.setAttribute("name", "close");
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60 dismiss.append(icon);
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61 this.append(dismiss);
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62 }
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63 if (dismiss === this._dismissControl) return;
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64
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65 this.unbindDismissControl();
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66 this._dismissControl = dismiss;
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67 this._dismissHandler = () => {
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68 this.dispatchEvent(new CustomEvent("zen-dismiss", {
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69 bubbles: true,
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70 composed: true,
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71 }));
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72 this.remove();
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73 };
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74 dismiss.addEventListener("click", this._dismissHandler);
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75 }
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76 }
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77
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78 if (!customElements.get("zen-alert")) {
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79 customElements.define("zen-alert", ZenAlert);
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80 }