363 regels
8.3 KiB
JavaScript
Executable File
363 regels
8.3 KiB
JavaScript
Executable File
/**
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* Selector.js
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*
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* Copyright, Moxiecode Systems AB
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* Released under LGPL License.
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*
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* License: http://www.tinymce.com/license
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* Contributing: http://www.tinymce.com/contributing
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*/
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/**
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* Selector engine, enables you to select controls by using CSS like expressions.
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* We currently only support basic CSS expressions to reduce the size of the core
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* and the ones we support should be enough for most cases.
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*
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* @example
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* Supported expressions:
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* element
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* element#name
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* element.class
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* element[attr]
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* element[attr*=value]
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* element[attr~=value]
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* element[attr!=value]
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* element[attr^=value]
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* element[attr$=value]
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* element:<state>
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* element:not(<expession>)
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* element:first
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* element:last
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* element:odd
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* element:even
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* element element
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* element > element
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*
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* @class tinymce.ui.Selector
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*/
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define("tinymce/ui/Selector", [
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"tinymce/util/Class",
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"tinymce/util/Tools"
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], function(Class, Tools) {
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"use strict";
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/**
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* Produces an array with a unique set of objects. It will not compare the values
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* but the references of the objects.
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*
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* @private
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* @method unqiue
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* @param {Array} array Array to make into an array with unique items.
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* @return {Array} Array with unique items.
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*/
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function unique(array) {
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var uniqueItems = [], i = array.length, item;
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while (i--) {
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item = array[i];
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if (!item.__checked) {
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uniqueItems.push(item);
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item.__checked = 1;
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}
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}
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i = uniqueItems.length;
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while (i--) {
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delete uniqueItems[i].__checked;
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}
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return uniqueItems;
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}
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var expression = /^([\w\\*]+)?(?:#([\w\\]+))?(?:\.([\w\\\.]+))?(?:\[\@?([\w\\]+)([\^\$\*!~]?=)([\w\\]+)\])?(?:\:(.+))?/i;
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/*jshint maxlen:255 */
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var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^\[\]]*\]|['"][^'"]*['"]|[^\[\]'"]+)+\]|\\.|[^ >+~,(\[\\]+)+|[>+~])(\s*,\s*)?((?:.|\r|\n)*)/g,
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whiteSpace = /^\s*|\s*$/g,
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Collection;
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var Selector = Class.extend({
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/**
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* Constructs a new Selector instance.
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*
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* @constructor
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* @method init
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* @param {String} selector CSS like selector expression.
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*/
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init: function(selector) {
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var match = this.match;
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function compileNameFilter(name) {
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if (name) {
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name = name.toLowerCase();
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return function(item) {
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return name === '*' || item.type === name;
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};
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}
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}
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function compileIdFilter(id) {
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if (id) {
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return function(item) {
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return item._name === id;
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};
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}
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}
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function compileClassesFilter(classes) {
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if (classes) {
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classes = classes.split('.');
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return function(item) {
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var i = classes.length;
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while (i--) {
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if (!item.hasClass(classes[i])) {
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return false;
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}
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}
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return true;
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};
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}
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}
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function compileAttrFilter(name, cmp, check) {
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if (name) {
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return function(item) {
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var value = item[name] ? item[name]() : '';
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return !cmp ? !!check :
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cmp === "=" ? value === check :
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cmp === "*=" ? value.indexOf(check) >= 0 :
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cmp === "~=" ? (" " + value + " ").indexOf(" " + check + " ") >= 0 :
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cmp === "!=" ? value != check :
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cmp === "^=" ? value.indexOf(check) === 0 :
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cmp === "$=" ? value.substr(value.length - check.length) === check :
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false;
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};
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}
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}
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function compilePsuedoFilter(name) {
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var notSelectors;
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if (name) {
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name = /(?:not\((.+)\))|(.+)/i.exec(name);
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if (!name[1]) {
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name = name[2];
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return function(item, index, length) {
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return name === 'first' ? index === 0 :
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name === 'last' ? index === length - 1 :
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name === 'even' ? index % 2 === 0 :
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name === 'odd' ? index % 2 === 1 :
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item[name] ? item[name]() :
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false;
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};
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} else {
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// Compile not expression
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notSelectors = parseChunks(name[1], []);
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return function(item) {
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return !match(item, notSelectors);
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};
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}
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}
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}
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function compile(selector, filters, direct) {
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var parts;
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function add(filter) {
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if (filter) {
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filters.push(filter);
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}
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}
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// Parse expression into parts
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parts = expression.exec(selector.replace(whiteSpace, ''));
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add(compileNameFilter(parts[1]));
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add(compileIdFilter(parts[2]));
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add(compileClassesFilter(parts[3]));
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add(compileAttrFilter(parts[4], parts[5], parts[6]));
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add(compilePsuedoFilter(parts[7]));
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// Mark the filter with psuedo for performance
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filters.psuedo = !!parts[7];
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filters.direct = direct;
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return filters;
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}
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// Parser logic based on Sizzle by John Resig
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function parseChunks(selector, selectors) {
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var parts = [], extra, matches, i;
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do {
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chunker.exec("");
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matches = chunker.exec(selector);
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if (matches) {
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selector = matches[3];
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parts.push(matches[1]);
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if (matches[2]) {
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extra = matches[3];
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break;
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}
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}
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} while (matches);
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if (extra) {
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parseChunks(extra, selectors);
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}
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selector = [];
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for (i = 0; i < parts.length; i++) {
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if (parts[i] != '>') {
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selector.push(compile(parts[i], [], parts[i - 1] === '>'));
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}
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}
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selectors.push(selector);
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return selectors;
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}
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this._selectors = parseChunks(selector, []);
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},
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/**
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* Returns true/false if the selector matches the specified control.
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*
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* @method match
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* @param {tinymce.ui.Control} control Control to match agains the selector.
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* @param {Array} selectors Optional array of selectors, mostly used internally.
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* @return {Boolean} true/false state if the control matches or not.
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*/
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match: function(control, selectors) {
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var i, l, si, sl, selector, fi, fl, filters, index, length, siblings, count, item;
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selectors = selectors || this._selectors;
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for (i = 0, l = selectors.length; i < l; i++) {
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selector = selectors[i];
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sl = selector.length;
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item = control;
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count = 0;
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for (si = sl - 1; si >= 0; si--) {
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filters = selector[si];
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while (item) {
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// Find the index and length since a psuedo filter like :first needs it
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if (filters.psuedo) {
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siblings = item.parent().items();
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index = Tools.inArray(item, siblings);
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length = siblings.length;
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}
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for (fi = 0, fl = filters.length; fi < fl; fi++) {
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if (!filters[fi](item, index, length)) {
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fi = fl + 1;
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break;
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}
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}
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if (fi === fl) {
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count++;
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break;
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} else {
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// If it didn't match the right most expression then
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// break since it's no point looking at the parents
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if (si === sl - 1) {
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break;
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}
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}
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item = item.parent();
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}
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}
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// If we found all selectors then return true otherwise continue looking
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if (count === sl) {
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return true;
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}
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}
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return false;
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},
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/**
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* Returns a tinymce.ui.Collection with matches of the specified selector inside the specified container.
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*
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* @method find
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* @param {tinymce.ui.Control} container Container to look for items in.
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* @return {tinymce.ui.Collection} Collection with matched elements.
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*/
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find: function(container) {
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var matches = [], i, l, selectors = this._selectors;
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function collect(items, selector, index) {
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var i, l, fi, fl, item, filters = selector[index];
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for (i = 0, l = items.length; i < l; i++) {
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item = items[i];
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// Run each filter agains the item
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for (fi = 0, fl = filters.length; fi < fl; fi++) {
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if (!filters[fi](item, i, l)) {
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fi = fl + 1;
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break;
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}
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}
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// All filters matched the item
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if (fi === fl) {
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// Matched item is on the last expession like: panel toolbar [button]
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if (index == selector.length - 1) {
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matches.push(item);
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} else {
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// Collect next expession type
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if (item.items) {
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collect(item.items(), selector, index + 1);
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}
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}
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} else if (filters.direct) {
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return;
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}
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// Collect child items
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if (item.items) {
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collect(item.items(), selector, index);
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}
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}
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}
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if (container.items) {
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for (i = 0, l = selectors.length; i < l; i++) {
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collect(container.items(), selectors[i], 0);
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}
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// Unique the matches if needed
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if (l > 1) {
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matches = unique(matches);
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}
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}
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// Fix for circular reference
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if (!Collection) {
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// TODO: Fix me!
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Collection = Selector.Collection;
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}
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return new Collection(matches);
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}
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});
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return Selector;
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}); |