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- (function($){
- /**
- * Helper class for dealing with creating
- * and updating stylesheets.
- *
- * @class FLStyleSheet
- * @since 1.3.3
- */
- FLStyleSheet = function( o )
- {
- if ( 'object' == typeof o ) {
- $.extend( this, o );
- }
- this._createSheet();
- };
- /**
- * Prototype for new instances.
- *
- * @since 1.3.3
- * @property {Object} prototype
- */
- FLStyleSheet.prototype = {
- /**
- * An ID for the stylesheet element.
- *
- * @since 1.9
- * @property {String} id
- */
- id : null,
- /**
- * A reference to the stylesheet object.
- *
- * @since 1.3.3
- * @access private
- * @property {Object} _sheet
- */
- _sheet : null,
- /**
- * A reference to the HTML style element.
- *
- * @since 1.3.3
- * @access private
- * @property {Object} _sheetElement
- */
- _sheetElement : null,
- /**
- * Update a rule for this stylesheet.
- *
- * @since 1.3.3
- * @method updateRule
- * @param {String} selector The CSS selector to update.
- * @param {String} property The CSS property to update. Can also be an object of key/value pairs.
- * @param {String} value The value of the property to update. Can be omitted if property is an object.
- */
- updateRule: function(selector, property, value)
- {
- var rules = this._sheet.cssRules ? this._sheet.cssRules : this._sheet.rules,
- rule = null,
- i = 0;
- // Find the rule to update.
- for( ; i < rules.length; i++) {
- if(rules[i].selectorText.toLowerCase().replace( /\s/g, '' ) == selector.toLowerCase().replace( /\s/g, '' )) {
- rule = rules[i];
- }
- }
- // Update the existing rule.
- if(rule) {
- if(typeof property == 'object') {
- for(i in property) {
- this.setProperty( rule, i, property[ i ] );
- }
- }
- else {
- this.setProperty( rule, property, value );
- }
- }
- // No rule found. Add a new one.
- else {
- this.addRule(selector, property, value);
- }
- },
- /**
- * Sets a property for a rule.
- *
- * @since 2.2
- * @method setProperty
- * @param {Object} rule
- * @param {String} selector
- * @param {String} value
- */
- setProperty: function( rule, property, value = '' )
- {
- var important = '';
- if ( rule.style.setProperty ) {
- if ( value.indexOf( '!important' ) > -1 ) {
- important = 'important';
- value = value.replace( '!important', '' ).trim();
- }
- rule.style.setProperty( property, value, important );
- } else {
- rule.style[ this._toCamelCase( property ) ] = value;
- }
- },
- /**
- * Add a new rule to this stylesheet.
- *
- * @since 1.3.3
- * @method addRule
- * @param {String} selector The CSS selector to add.
- * @param {String} property The CSS property to add. Can also be an object of key/value pairs.
- * @param {String} value The value of the property to add. Can be omitted if property is an object.
- */
- addRule: function(selector, property, value)
- {
- var styles = '',
- i = '';
- if(typeof property == 'object') {
- for(i in property) {
- styles += i + ':' + property[i] + ';';
- }
- }
- else {
- styles = property + ':' + value + ';';
- }
- if(this._sheet.insertRule) {
- this._sheet.insertRule(selector + ' { ' + styles + ' }', this._sheet.cssRules.length);
- }
- else {
- this._sheet.addRule(selector, styles);
- }
- },
- /**
- * Completely destroys the sheet by removing the
- * stylesheet element from the DOM and making the
- * stored object reference null.
- *
- * @since 1.9
- * @method destroy
- */
- destroy: function()
- {
- if(this._sheetElement) {
- this._sheetElement.remove();
- this._sheetElement = null;
- }
- if(this._sheet) {
- this._sheet = null;
- }
- },
- /**
- * Disables the sheet by removing it from the DOM.
- *
- * @since 1.9
- * @method disable
- */
- disable: function()
- {
- this._sheet.disabled = true;
- },
- /**
- * Enables the sheet by adding it to the DOM.
- *
- * @since 1.9
- * @method enable
- */
- enable: function()
- {
- this._sheet.disabled = false;
- },
- /**
- * Create the style element, add it to the DOM
- * and save references.
- *
- * @since 1.3.3
- * @access private
- * @method _createSheet
- */
- _createSheet: function()
- {
- var id = this.id ? ' id="' + this.id + '"' : '',
- className = this.className ? ' class="' + this.className + '"' : '';
- if ( ! this._sheet ) {
- this._sheetElement = $( '<style type="text/css"' + id + className + '></style>' );
- $( 'body' ).append( this._sheetElement );
- this._sheet = this._sheetElement[0].sheet;
- }
- },
- /**
- * Convert a string to camel case.
- *
- * @since 1.3.3
- * @access private
- * @method _toCamelCase
- * @param {String} input The string to convert.
- */
- _toCamelCase: function(input)
- {
- return input.toLowerCase().replace(/-(.)/g, function(match, group1) {
- return group1.toUpperCase();
- });
- }
- };
- })(jQuery);
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