87 lines
2.6 KiB
JavaScript
87 lines
2.6 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
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var _warning = require('warning');
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var _warning2 = _interopRequireDefault(_warning);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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/**
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* SheetsManager is like a WeakMap which is designed to count StyleSheet
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* instances and attach/detach automatically.
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*/
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var SheetsManager = function () {
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function SheetsManager() {
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_classCallCheck(this, SheetsManager);
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this.sheets = [];
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this.refs = [];
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this.keys = [];
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}
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_createClass(SheetsManager, [{
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key: 'get',
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value: function get(key) {
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var index = this.keys.indexOf(key);
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return this.sheets[index];
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}
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}, {
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key: 'add',
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value: function add(key, sheet) {
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var sheets = this.sheets,
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refs = this.refs,
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keys = this.keys;
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var index = sheets.indexOf(sheet);
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if (index !== -1) return index;
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sheets.push(sheet);
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refs.push(0);
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keys.push(key);
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return sheets.length - 1;
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}
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}, {
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key: 'manage',
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value: function manage(key) {
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var index = this.keys.indexOf(key);
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var sheet = this.sheets[index];
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if (this.refs[index] === 0) sheet.attach();
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this.refs[index]++;
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if (!this.keys[index]) this.keys.splice(index, 0, key);
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return sheet;
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}
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}, {
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key: 'unmanage',
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value: function unmanage(key) {
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var index = this.keys.indexOf(key);
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if (index === -1) {
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// eslint-ignore-next-line no-console
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(0, _warning2['default'])(false, "SheetsManager: can't find sheet to unmanage");
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return;
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}
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if (this.refs[index] > 0) {
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this.refs[index]--;
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if (this.refs[index] === 0) this.sheets[index].detach();
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}
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}
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}, {
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key: 'size',
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get: function get() {
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return this.keys.length;
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}
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}]);
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return SheetsManager;
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}();
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exports['default'] = SheetsManager; |