import Attributor from './attributor/attributor';
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import { Blot, Formattable } from './blot/abstract/blot';
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export interface BlotConstructor {
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blotName: string;
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new (node: Node, value?: any): Blot;
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create(value?: any): Node;
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}
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export class ParchmentError extends Error {
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message: string;
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name: string;
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stack!: string;
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constructor(message: string) {
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message = '[Parchment] ' + message;
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super(message);
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this.message = message;
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this.name = (<any>this.constructor).name;
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}
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}
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let attributes: { [key: string]: Attributor } = {};
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let classes: { [key: string]: BlotConstructor } = {};
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let tags: { [key: string]: BlotConstructor } = {};
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let types: { [key: string]: Attributor | BlotConstructor } = {};
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export const DATA_KEY = '__blot';
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export enum Scope {
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TYPE = (1 << 2) - 1, // 0011 Lower two bits
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LEVEL = ((1 << 2) - 1) << 2, // 1100 Higher two bits
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ATTRIBUTE = (1 << 0) | LEVEL, // 1101
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BLOT = (1 << 1) | LEVEL, // 1110
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INLINE = (1 << 2) | TYPE, // 0111
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BLOCK = (1 << 3) | TYPE, // 1011
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BLOCK_BLOT = BLOCK & BLOT, // 1010
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INLINE_BLOT = INLINE & BLOT, // 0110
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BLOCK_ATTRIBUTE = BLOCK & ATTRIBUTE, // 1001
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INLINE_ATTRIBUTE = INLINE & ATTRIBUTE, // 0101
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ANY = TYPE | LEVEL,
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}
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export function create(input: Node | string | Scope, value?: any): Blot {
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let match = query(input);
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if (match == null) {
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throw new ParchmentError(`Unable to create ${input} blot`);
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}
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let BlotClass = <BlotConstructor>match;
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let node =
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// @ts-ignore
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input instanceof Node || input['nodeType'] === Node.TEXT_NODE ? input : BlotClass.create(value);
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return new BlotClass(<Node>node, value);
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}
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export function find(node: Node | null, bubble: boolean = false): Blot | null {
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if (node == null) return null;
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// @ts-ignore
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if (node[DATA_KEY] != null) return node[DATA_KEY].blot;
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if (bubble) return find(node.parentNode, bubble);
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return null;
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}
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export function query(
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query: string | Node | Scope,
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scope: Scope = Scope.ANY,
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): Attributor | BlotConstructor | null {
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let match;
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if (typeof query === 'string') {
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match = types[query] || attributes[query];
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// @ts-ignore
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} else if (query instanceof Text || query['nodeType'] === Node.TEXT_NODE) {
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match = types['text'];
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} else if (typeof query === 'number') {
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if (query & Scope.LEVEL & Scope.BLOCK) {
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match = types['block'];
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} else if (query & Scope.LEVEL & Scope.INLINE) {
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match = types['inline'];
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}
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} else if (query instanceof HTMLElement) {
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let names = (query.getAttribute('class') || '').split(/\s+/);
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for (let i in names) {
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match = classes[names[i]];
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if (match) break;
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}
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match = match || tags[query.tagName];
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}
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if (match == null) return null;
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// @ts-ignore
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if (scope & Scope.LEVEL & match.scope && scope & Scope.TYPE & match.scope) return match;
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return null;
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}
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export function register(...Definitions: any[]): any {
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if (Definitions.length > 1) {
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return Definitions.map(function(d) {
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return register(d);
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});
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}
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let Definition = Definitions[0];
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if (typeof Definition.blotName !== 'string' && typeof Definition.attrName !== 'string') {
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throw new ParchmentError('Invalid definition');
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} else if (Definition.blotName === 'abstract') {
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throw new ParchmentError('Cannot register abstract class');
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}
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types[Definition.blotName || Definition.attrName] = Definition;
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if (typeof Definition.keyName === 'string') {
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attributes[Definition.keyName] = Definition;
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} else {
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if (Definition.className != null) {
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classes[Definition.className] = Definition;
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}
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if (Definition.tagName != null) {
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if (Array.isArray(Definition.tagName)) {
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Definition.tagName = Definition.tagName.map(function(tagName: string) {
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return tagName.toUpperCase();
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});
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} else {
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Definition.tagName = Definition.tagName.toUpperCase();
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}
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let tagNames = Array.isArray(Definition.tagName) ? Definition.tagName : [Definition.tagName];
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tagNames.forEach(function(tag: string) {
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if (tags[tag] == null || Definition.className == null) {
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tags[tag] = Definition;
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}
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});
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}
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}
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return Definition;
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}
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