@zodiac-ui/editor/esm2015/lib/commands/toggle-block-mark.js

A rich text editor for Angular based on `@atlaskit/editor-core`.

export const toggleBlockMark = (markType, getAttrs, allowedBlocks) => (state, dispatch) => {
    const { from, to } = state.selection;
    let markApplied = false;
    const tr = state.tr;
    state.doc.nodesBetween(from, to, (node, pos, parent) => {
        if (!node.type.isBlock) {
            return false;
        }
        if ((!allowedBlocks ||
            (Array.isArray(allowedBlocks)
                ? allowedBlocks.indexOf(node.type) > -1
                : allowedBlocks(state.schema, node, parent))) &&
            parent.type.allowsMarkType(markType)) {
            const oldMarks = node.marks.filter(mark => mark.type === markType);
            const prevAttrs = oldMarks.length ? oldMarks[0].attrs : undefined;
            const newAttrs = getAttrs(prevAttrs, node);
            if (newAttrs !== undefined) {
                tr.setNodeMarkup(pos, node.type, node.attrs, node.marks
                    .filter(mark => !markType.excludes(mark.type))
                    .concat(newAttrs === false ? [] : markType.create(newAttrs)));
                markApplied = true;
            }
        }
    });
    if (markApplied && tr.docChanged) {
        if (dispatch) {
            dispatch(tr.scrollIntoView());
        }
        return true;
    }
    return false;
};
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