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| 2 | /*!
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| 3 | * Stylus - Group
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| 4 | * Copyright (c) Automattic <developer.wordpress.com>
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| 5 | * MIT Licensed
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| 6 | */
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| 7 |
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| 8 | /**
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| 9 | * Module dependencies.
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| 10 | */
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| 11 |
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| 12 | var Node = require('./node');
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| 13 |
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| 14 | /**
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| 15 | * Initialize a new `Group`.
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| 16 | *
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| 17 | * @api public
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| 18 | */
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| 19 |
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| 20 | var Group = module.exports = function Group(){
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| 21 | Node.call(this);
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| 22 | this.nodes = [];
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| 23 | this.extends = [];
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| 24 | };
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| 25 |
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| 26 | /**
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| 27 | * Inherit from `Node.prototype`.
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| 28 | */
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| 29 |
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| 30 | Group.prototype.__proto__ = Node.prototype;
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| 31 |
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| 32 | /**
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| 33 | * Push the given `selector` node.
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| 34 | *
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| 35 | * @param {Selector} selector
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| 36 | * @api public
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| 37 | */
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| 38 |
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| 39 | Group.prototype.push = function(selector){
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| 40 | this.nodes.push(selector);
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| 41 | };
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| 42 |
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| 43 | /**
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| 44 | * Return this set's `Block`.
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| 45 | */
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| 46 |
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| 47 | Group.prototype.__defineGetter__('block', function(){
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| 48 | return this.nodes[0].block;
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| 49 | });
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| 50 |
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| 51 | /**
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| 52 | * Assign `block` to each selector in this set.
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| 53 | *
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| 54 | * @param {Block} block
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| 55 | * @api public
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| 56 | */
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| 57 |
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| 58 | Group.prototype.__defineSetter__('block', function(block){
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| 59 | for (var i = 0, len = this.nodes.length; i < len; ++i) {
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| 60 | this.nodes[i].block = block;
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| 61 | }
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| 62 | });
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| 63 |
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| 64 | /**
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| 65 | * Check if this set has only placeholders.
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| 66 | *
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| 67 | * @return {Boolean}
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| 68 | * @api public
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| 69 | */
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| 70 |
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| 71 | Group.prototype.__defineGetter__('hasOnlyPlaceholders', function(){
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| 72 | return this.nodes.every(function(selector) { return selector.isPlaceholder; });
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| 73 | });
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| 74 |
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| 75 | /**
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| 76 | * Return a clone of this node.
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| 77 | *
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| 78 | * @return {Node}
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| 79 | * @api public
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| 80 | */
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| 81 |
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| 82 | Group.prototype.clone = function(parent){
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| 83 | var clone = new Group;
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| 84 | clone.lineno = this.lineno;
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| 85 | clone.column = this.column;
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| 86 | this.nodes.forEach(function(node){
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| 87 | clone.push(node.clone(parent, clone));
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| 88 | });
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| 89 | clone.filename = this.filename;
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| 90 | clone.block = this.block.clone(parent, clone);
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| 91 | return clone;
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| 92 | };
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| 93 |
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| 94 | /**
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| 95 | * Return a JSON representation of this node.
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| 96 | *
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| 97 | * @return {Object}
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| 98 | * @api public
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| 99 | */
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| 100 |
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| 101 | Group.prototype.toJSON = function(){
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| 102 | return {
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| 103 | __type: 'Group',
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| 104 | nodes: this.nodes,
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| 105 | block: this.block,
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| 106 | lineno: this.lineno,
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| 107 | column: this.column,
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| 108 | filename: this.filename
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| 109 | };
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| 110 | };
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