60 lines
1.5 KiB
JavaScript
60 lines
1.5 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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/**
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* Dummy container node used for the root document element.
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*/
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function RootContainer(markupView, node) {
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this.doc = markupView.doc;
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this.elt = this.doc.createElement("ul");
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// Root container has tree semantics for accessibility.
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this.elt.setAttribute("role", "tree");
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this.elt.setAttribute("tabindex", "0");
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this.elt.setAttribute("aria-dropeffect", "none");
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this.elt.container = this;
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this.children = this.elt;
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this.node = node;
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this.toString = () => "[root container]";
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}
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RootContainer.prototype = {
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hasChildren: true,
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expanded: true,
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update() {},
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destroy() {},
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/**
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* If the node has children, return the list of containers for all these children.
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* @return {Array} An array of child containers or null.
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*/
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getChildContainers() {
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return [...this.children.children]
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.filter(node => node.container)
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.map(node => node.container);
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},
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/**
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* Set the expanded state of the container node.
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* @param {Boolean} value
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*/
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setExpanded() {},
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/**
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* Set an appropriate role of the container's children node.
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*/
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setChildrenRole() {},
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/**
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* Set an appropriate DOM tree depth level for a node and its subtree.
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*/
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updateLevel() {},
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isSlotted() {
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return false;
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},
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};
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module.exports = RootContainer;
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