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import {SliceStacking, SliceTypeCon as TAG} from '../slice/constants';
import {CommonSliceType, type TypeTag} from '../slice';
import {SliceBehavior} from './SliceBehavior';
import {printTree} from 'tree-dump/lib/printTree';
import type {PeritextMlElement} from '../block/types';
import type {JsonMlElement} from 'very-small-parser/lib/html/json-ml/types';
import type {FromHtmlConverter, ToHtmlConverter} from './types';
import type {Printable} from 'tree-dump';
import type {JsonNodeView} from '../../../json-crdt/nodes';
import type {SchemaToJsonNode} from '../../../json-crdt/schema/types';
/**
* Slice registry contains a record of possible inline an block formatting
* annotations. Each entry in the registry is a {@link SliceBehavior} that
* specifies the behavior, tag, and other properties of the slice.
*
* @todo Consider moving the registry under the `/transfer` directory. Or maybe
* `/slices` directory.
*/
export class SliceRegistry implements Printable {
/**
* Creates a new slice registry with common tag registered.
*/
public static readonly withCommon = (): SliceRegistry => {
const undefSchema = s.con(undefined);
const registry = new SliceRegistry();
//------------------------------ Inline elements with "One" stacking behavior
const i0 = <Tag extends TypeTag = TypeTag>(
tag: Tag,
name: string,
fromHtml?: SliceBehavior<SliceStacking.One, Tag, typeof undefSchema>['fromHtml'],
): void => {
registry.add(new SliceBehavior(SliceStacking.One, tag, name, void 0, false, void 0, fromHtml));
};
const i1 = <Tag extends TypeTag = TypeTag>(tag: Tag, name: string, htmlTags: string[]): void => {
const fromHtml = {} as Record<any, any>;
for (const htmlTag of htmlTags) fromHtml[htmlTag] = () => [tag, null];
i0(tag, name, fromHtml);
};
i1(TAG.i, 'Italic', ['i', 'em']);
i1(TAG.b, 'Bold', ['b', 'strong']);
i1(TAG.s, 'Strikethrough', ['s', 'strike']);
i0(TAG.u, 'Underline');
i0(TAG.code, 'Code');
i0(TAG.mark, 'Highlight');
i0(TAG.kbd, 'Keyboard');
i0(TAG.del, 'Delete');
i0(TAG.ins, 'Insert');
i0(TAG.sup, 'Superscript');
i0(TAG.sub, 'Subscript');
i0(TAG.math, 'Math');
// --------------------------- Inline elements with "Many" stacking behavior
const aSchema = s.obj(
{},
{
href: s.str<string>(''),
title: s.str<string>(''),
},
);
registry.add(
new SliceBehavior(SliceStacking.Many, TAG.a, 'Link', aSchema, false, void 0, {
a: (jsonml) => {
const attr = jsonml[1] || {};
const data: JsonNodeView<SchemaToJsonNode<typeof aSchema>> = {
href: attr.href ?? '',
title: attr.title ?? '',
};
return [TAG.a, {data, inline: true}] as PeritextMlElement<TAG.a, any, true>;
},
}),
);
const colSchema = s.obj(
{},
{
color: s.str<string>(''),
},
);
registry.add(
new SliceBehavior(SliceStacking.Many, TAG.col, 'Color', colSchema, false, void 0, {
col: (jsonml) => {
const attr = jsonml[1] || {};
const data: JsonNodeView<SchemaToJsonNode<typeof colSchema>> = {
color: attr.color ?? '',
};
return [TAG.col, {data, inline: true}] as PeritextMlElement<TAG.col, any, true>;
},
}),
);
// TODO: add more default annotations with "Many" stacking behavior
// comment = SliceTypeCon.comment,
// font = SliceTypeCon.font,
// col = SliceTypeCon.col,
// bg = SliceTypeCon.bg,
// hidden = SliceTypeCon.hidden,
// footnote = SliceTypeCon.footnote,
// ref = SliceTypeCon.ref,
// iaside = SliceTypeCon.iaside,
// iembed = SliceTypeCon.iembed,
// bookmark = SliceTypeCon.bookmark,
// -------------------------- Block elements with "Marker" stacking behavior
const commonBlockSchema = s.obj(
{},
{
indent: s.con(0),
align: s.str<'left' | 'center' | 'right' | 'justify'>('left'),
},
);
const b0 = <Tag extends TypeTag = TypeTag>(tag: Tag, name: string, container: boolean) => {
registry.add(new SliceBehavior(SliceStacking.Marker, tag, name, commonBlockSchema, container));
};
b0(TAG.p, 'Paragraph', false);
b0(TAG.blockquote, 'Blockquote', true);
b0(TAG.codeblock, 'Code block', false);
b0(TAG.pre, 'Pre-formatted', false);
b0(TAG.ul, 'Unordered list', true);
b0(TAG.ol, 'Ordered list', true);
b0(TAG.tl, 'Task list', true);
b0(TAG.li, 'List item', true);
b0(TAG.h1, 'Heading 1', false);
b0(TAG.h2, 'Heading 2', false);
b0(TAG.h3, 'Heading 3', false);
b0(TAG.h4, 'Heading 4', false);
b0(TAG.h5, 'Heading 5', false);
b0(TAG.h6, 'Heading 6', false);
b0(TAG.title, 'Title', false);
b0(TAG.subtitle, 'Subtitle', false);
// b0(TAG.br, false);
// b0(TAG.nl, false);
// b0(TAG.hr, false);
// b0(TAG.page, false);
// b0(TAG.aside, true);
// b0(TAG.embed, false);
// b0(TAG.column, true);
// b0(TAG.contents, true);
// b0(TAG.table, true);
// b0(TAG.row, true);
// b0(TAG.cell, true);
// b0(TAG.collapselist, true);
// b0(TAG.collapse, true);
// b0(TAG.note, true);
// b0(TAG.mathblock, false);
return registry;
};
private map: Map<TypeTag, SliceBehavior> = new Map();
private _fromHtml: Map<string, [entry: SliceBehavior, converter: FromHtmlConverter][]> = new Map();
public clear(): void {
this.map.clear();
this._fromHtml.clear();
}
public add(entry: SliceBehavior<any, any, any>): void {
const {tag, fromHtml} = entry;
this.map.set(tag, entry);
const _fromHtml = this._fromHtml;
if (fromHtml) {
for (const htmlTag in fromHtml) {
const converter = fromHtml[htmlTag];
const converters = _fromHtml.get(htmlTag) ?? [];
converters.push([entry, converter]);
_fromHtml.set(htmlTag, converters);
}
}
const tagStr = CommonSliceType[tag as TAG];
if (tagStr && typeof tagStr === 'string' && (!fromHtml || !(tagStr in fromHtml)))
_fromHtml.set(tagStr, [[entry, () => [tag, null]]]);
}
public get(tag: TypeTag): SliceBehavior | undefined {
return this.map.get(tag);
}
public isContainer(tag: TypeTag): boolean {
const entry = this.map.get(tag);
return entry?.container ?? false;
}
public toHtml(el: PeritextMlElement): ReturnType<ToHtmlConverter<any>> | undefined {
const entry = this.map.get(el[0]);
return entry?.toHtml ? entry?.toHtml(el) : void 0;
}
public fromHtml(el: JsonMlElement): PeritextMlElement | undefined {
const tag = el[0] + '';
const converters = this._fromHtml.get(tag);
if (converters) {
for (const [entry, converter] of converters) {
const result = converter(el);
if (result) {
if (entry.isInline()) {
const attr = result[1] ?? (result[1] = {});
attr.inline = entry.isInline();
attr.stacking = !attr.inline ? SliceStacking.Marker : (entry.stacking ?? SliceStacking.Many);
}
return result;
}
}
}
return;
}
/** ----------------------------------------------------- {@link Printable} */
public toString(tab: string = ''): string {
return (
'SliceRegistry' +
printTree(
tab,
[...this.map.values()].map((entry) => (tab) => entry.toString(tab)),
)
);
}
}
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