quill-delta-to-html/dist/commonjs/grouper/ListNester.js

Converts Quill's delta ops to HTML

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var group_types_1 = require("./group-types");
var array_1 = require("./../helpers/array");
var ListNester = (function () {
    function ListNester() {
    }
    ListNester.prototype.nest = function (groups) {
        var _this = this;
        var listBlocked = this.convertListBlocksToListGroups(groups);
        var groupedByListGroups = this.groupConsecutiveListGroups(listBlocked);
        var nested = array_1.flatten(groupedByListGroups.map(function (group) {
            if (!Array.isArray(group)) {
                return group;
            }
            return _this.nestListSection(group);
        }));
        var groupRootLists = array_1.groupConsecutiveElementsWhile(nested, function (curr, prev) {
            if (!(curr instanceof group_types_1.ListGroup && prev instanceof group_types_1.ListGroup)) {
                return false;
            }
            return curr.items[0].item.op.isSameListAs(prev.items[0].item.op);
        });
        return groupRootLists.map(function (v) {
            if (!Array.isArray(v)) {
                return v;
            }
            var litems = v.map(function (g) { return g.items; });
            return new group_types_1.ListGroup(array_1.flatten(litems));
        });
    };
    ListNester.prototype.convertListBlocksToListGroups = function (items) {
        var grouped = array_1.groupConsecutiveElementsWhile(items, function (g, gPrev) {
            return (g instanceof group_types_1.BlockGroup &&
                gPrev instanceof group_types_1.BlockGroup &&
                g.op.isList() &&
                gPrev.op.isList() &&
                g.op.isSameListAs(gPrev.op) &&
                g.op.hasSameIndentationAs(gPrev.op));
        });
        return grouped.map(function (item) {
            if (!Array.isArray(item)) {
                if (item instanceof group_types_1.BlockGroup && item.op.isList()) {
                    return new group_types_1.ListGroup([new group_types_1.ListItem(item)]);
                }
                return item;
            }
            return new group_types_1.ListGroup(item.map(function (g) { return new group_types_1.ListItem(g); }));
        });
    };
    ListNester.prototype.groupConsecutiveListGroups = function (items) {
        return array_1.groupConsecutiveElementsWhile(items, function (curr, prev) {
            return curr instanceof group_types_1.ListGroup && prev instanceof group_types_1.ListGroup;
        });
    };
    ListNester.prototype.nestListSection = function (sectionItems) {
        var _this = this;
        var indentGroups = this.groupByIndent(sectionItems);
        Object.keys(indentGroups)
            .map(Number)
            .sort()
            .reverse()
            .forEach(function (indent) {
            indentGroups[indent].forEach(function (lg) {
                var idx = sectionItems.indexOf(lg);
                if (_this.placeUnderParent(lg, sectionItems.slice(0, idx))) {
                    sectionItems.splice(idx, 1);
                }
            });
        });
        return sectionItems;
    };
    ListNester.prototype.groupByIndent = function (items) {
        return items.reduce(function (pv, cv) {
            var indent = cv.items[0].item.op.attributes.indent;
            if (indent) {
                pv[indent] = pv[indent] || [];
                pv[indent].push(cv);
            }
            return pv;
        }, {});
    };
    ListNester.prototype.placeUnderParent = function (target, items) {
        for (var i = items.length - 1; i >= 0; i--) {
            var elm = items[i];
            if (target.items[0].item.op.hasHigherIndentThan(elm.items[0].item.op)) {
                var parent = elm.items[elm.items.length - 1];
                if (parent.innerList) {
                    parent.innerList.items = parent.innerList.items.concat(target.items);
                }
                else {
                    parent.innerList = target;
                }
                return true;
            }
        }
        return false;
    };
    return ListNester;
}());
exports.ListNester = ListNester;