stylus
Version:
Robust, expressive, and feature-rich CSS superset
125 lines (106 loc) • 2.23 kB
JavaScript
/*!
* Stylus - Block
* Copyright (c) Automattic <developer.wordpress.com>
* MIT Licensed
*/
/**
* Module dependencies.
*/
var Node = require('./node');
module.exports = class Block extends Node {
/**
* Initialize a new `Block` node with `parent` Block.
*
* @param {Block} parent
* @api public
*/
constructor(parent, node) {
super();
this.nodes = [];
this.parent = parent;
this.node = node;
this.scope = true;
}
/**
* Check if this block has properties..
*
* @return {Boolean}
* @api public
*/
get hasProperties() {
for (var i = 0, len = this.nodes.length; i < len; ++i) {
if ('property' == this.nodes[i].nodeName) {
return true;
}
}
};
/**
* Check if this block has @media nodes.
*
* @return {Boolean}
* @api public
*/
get hasMedia() {
for (var i = 0, len = this.nodes.length; i < len; ++i) {
var nodeName = this.nodes[i].nodeName;
if ('media' == nodeName) {
return true;
}
}
return false;
};
/**
* Check if this block is empty.
*
* @return {Boolean}
* @api public
*/
get isEmpty() {
return !this.nodes.length || this.nodes.every(function (n) { return n.nodeName == 'comment' });
};
/**
* Return a clone of this node.
*
* @return {Node}
* @api public
*/
clone(parent, node) {
parent = parent || this.parent;
var clone = new Block(parent, node || this.node);
clone.lineno = this.lineno;
clone.column = this.column;
clone.filename = this.filename;
clone.scope = this.scope;
this.nodes.forEach(function (node) {
clone.push(node.clone(clone, clone));
});
return clone;
};
/**
* Push a `node` to this block.
*
* @param {Node} node
* @api public
*/
push(node) {
this.nodes.push(node);
};
/**
* Return a JSON representation of this node.
*
* @return {Object}
* @api public
*/
toJSON() {
return {
__type: 'Block',
// parent: this.parent,
// node: this.node,
scope: this.scope,
lineno: this.lineno,
column: this.column,
filename: this.filename,
nodes: this.nodes
};
};
};