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72
app/assets/javascripts/components/saved_annotation_input.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| import { customElement, property } from "lit/decorators.js"; | ||
| import { html, TemplateResult } from "lit"; | ||
| import { ShadowlessLitElement } from "components/shadowless_lit_element"; | ||
| import "components/datalist_input"; | ||
|
|
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| /** | ||
| * This component represents an input for a saved annotation id. | ||
| * The saved annotation can be searched by title using a d-datalist-input. | ||
| * | ||
| * @element d-saved-annotation-input | ||
| * | ||
| * @prop {String} name - name of the input field (used in form submit) | ||
| * @prop {Number} courseId - used to fetch saved annotations by course | ||
| * @prop {Number} exerciseId - used to fetch saved annotations by exercise | ||
| * @prop {Number} userId - used to fetch saved annotations by user | ||
| * @prop {String} value - the initial saved annotation id | ||
| * | ||
| * @fires input - on value change, event details contain {title: string, id: string, annotation_text: string} | ||
| */ | ||
| @customElement("d-saved-annotation-input") | ||
| export class SavedAnnotationInput extends ShadowlessLitElement { | ||
| @property({ type: String }) | ||
| name = ""; | ||
| @property({ type: Number, attribute: "course-id" }) | ||
| courseId: number; | ||
| @property({ type: Number, attribute: "exercise-id" }) | ||
| exerciseId: number; | ||
| @property({ type: Number, attribute: "user-id" }) | ||
| userId: number; | ||
| @property({ type: String }) | ||
| value: string; | ||
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| @property({ state: true }) | ||
| savedAnnotations: {title: string, id: string, annotation_text: string}[] = []; | ||
|
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| get options(): {label: string, value: string}[] { | ||
| return this.savedAnnotations.map(sa => ({ label: sa.title, value: sa.id.toString() })); | ||
| } | ||
|
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| connectedCallback(): void { | ||
| super.connectedCallback(); | ||
| this.fetchAnnotations(); | ||
| } | ||
|
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| async fetchAnnotations(): Promise<void> { | ||
| const url = `/saved_annotations.json?course_id=${this.courseId}&exercise_id=${this.exerciseId}&user_id=${this.userId}`; | ||
| const response = await fetch(url); | ||
| this.savedAnnotations = await response.json(); | ||
| } | ||
|
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| processInput(e: CustomEvent): void { | ||
| const annotation = this.savedAnnotations.find(sa => sa.id.toString() === e.detail.value.toString()); | ||
| const event = new CustomEvent("input", { | ||
| detail: { id: e.detail.value, title: e.detail.label, text: annotation?.annotation_text }, | ||
| bubbles: true, | ||
| composed: true } | ||
| ); | ||
| this.dispatchEvent(event); | ||
| e.stopPropagation(); | ||
| } | ||
|
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| render(): TemplateResult { | ||
| return html` | ||
| <d-datalist-input | ||
| name="${this.name}" | ||
| .options=${this.options} | ||
| value="${this.value}" | ||
| @input="${e => this.processInput(e)}" | ||
| ></d-datalist-input> | ||
| `; | ||
| } | ||
| } |