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76 lines
1.8 KiB
TypeScript
76 lines
1.8 KiB
TypeScript
import { css, html, LitElement, TemplateResult } from "lit";
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import { customElement, property, queryAssignedNodes } from "lit/decorators.js";
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import { MarkdownPreview } from "./markdown-preview";
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@customElement("markdown-write-preview")
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export class MarkdownWritePreview extends LitElement {
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@property()
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for!: string;
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@property()
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_textarea: HTMLTextAreaElement | null = null;
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@property()
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_markdownPreview!: MarkdownPreview;
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@queryAssignedNodes("write", true)
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_write!: NodeListOf<HTMLButtonElement>;
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@queryAssignedNodes("preview", true)
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_preview!: NodeListOf<HTMLButtonElement>;
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connectedCallback(): void {
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super.connectedCallback();
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this._textarea = document.getElementById(this.for) as HTMLTextAreaElement;
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this._markdownPreview = document.querySelector(
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`markdown-preview[for=${this.for}]`
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) as MarkdownPreview;
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}
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firstUpdated(): void {
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this.write();
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}
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write(): void {
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this._markdownPreview.hide();
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this._write[0].classList.add("active");
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this._preview[0].classList.remove("active");
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}
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preview(): void {
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this._markdownPreview.show();
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this._preview[0].classList.add("active");
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this._write[0].classList.remove("active");
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}
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static styles = css`
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::slotted(button) {
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opacity: 0.5;
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}
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::slotted(button.active) {
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position: relative;
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opacity: 1;
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}
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::slotted(button.active)::after {
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content: "";
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position: absolute;
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bottom: -2px;
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left: 0;
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right: 0;
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width: 80%;
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height: 4px;
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margin: 0 auto;
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background-color: #009486;
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border-radius: 9999px;
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}
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`;
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render(): TemplateResult<1> {
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return html`<slot name="write" class="active" @click="${this.write}"></slot>
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<slot name="preview" @click="${this.preview}"></slot>`;
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}
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}
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