angular2
Version:
Angular 2 - a web framework for modern web apps
345 lines • 49.9 kB
JavaScript
import { Map, ListWrapper } from 'angular2/src/facade/collection';
import { isPresent, isBlank, RegExpWrapper, RegExpMatcherWrapper, StringWrapper } from 'angular2/src/facade/lang';
import { BaseException } from 'angular2/src/facade/exceptions';
const _EMPTY_ATTR_VALUE = '';
// TODO: Can't use `const` here as
// in Dart this is not transpiled into `final` yet...
var _SELECTOR_REGEXP = RegExpWrapper.create('(\\:not\\()|' +
'([-\\w]+)|' +
'(?:\\.([-\\w]+))|' +
'(?:\\[([-\\w*]+)(?:=([^\\]]*))?\\])|' +
'(\\))|' +
'(\\s*,\\s*)'); // ","
/**
* A css selector contains an element name,
* css classes and attribute/value pairs with the purpose
* of selecting subsets out of them.
*/
export class CssSelector {
constructor() {
this.element = null;
this.classNames = [];
this.attrs = [];
this.notSelectors = [];
}
static parse(selector) {
var results = [];
var _addResult = (res, cssSel) => {
if (cssSel.notSelectors.length > 0 && isBlank(cssSel.element) &&
ListWrapper.isEmpty(cssSel.classNames) && ListWrapper.isEmpty(cssSel.attrs)) {
cssSel.element = "*";
}
res.push(cssSel);
};
var cssSelector = new CssSelector();
var matcher = RegExpWrapper.matcher(_SELECTOR_REGEXP, selector);
var match;
var current = cssSelector;
var inNot = false;
while (isPresent(match = RegExpMatcherWrapper.next(matcher))) {
if (isPresent(match[1])) {
if (inNot) {
throw new BaseException('Nesting :not is not allowed in a selector');
}
inNot = true;
current = new CssSelector();
cssSelector.notSelectors.push(current);
}
if (isPresent(match[2])) {
current.setElement(match[2]);
}
if (isPresent(match[3])) {
current.addClassName(match[3]);
}
if (isPresent(match[4])) {
current.addAttribute(match[4], match[5]);
}
if (isPresent(match[6])) {
inNot = false;
current = cssSelector;
}
if (isPresent(match[7])) {
if (inNot) {
throw new BaseException('Multiple selectors in :not are not supported');
}
_addResult(results, cssSelector);
cssSelector = current = new CssSelector();
}
}
_addResult(results, cssSelector);
return results;
}
isElementSelector() {
return isPresent(this.element) && ListWrapper.isEmpty(this.classNames) &&
ListWrapper.isEmpty(this.attrs) && this.notSelectors.length === 0;
}
setElement(element = null) { this.element = element; }
/** Gets a template string for an element that matches the selector. */
getMatchingElementTemplate() {
let tagName = isPresent(this.element) ? this.element : 'div';
let classAttr = this.classNames.length > 0 ? ` class="${this.classNames.join(' ')}"` : '';
let attrs = '';
for (let i = 0; i < this.attrs.length; i += 2) {
let attrName = this.attrs[i];
let attrValue = this.attrs[i + 1] !== '' ? `="${this.attrs[i + 1]}"` : '';
attrs += ` ${attrName}${attrValue}`;
}
return `<${tagName}${classAttr}${attrs}></${tagName}>`;
}
addAttribute(name, value = _EMPTY_ATTR_VALUE) {
this.attrs.push(name);
if (isPresent(value)) {
value = value.toLowerCase();
}
else {
value = _EMPTY_ATTR_VALUE;
}
this.attrs.push(value);
}
addClassName(name) { this.classNames.push(name.toLowerCase()); }
toString() {
var res = '';
if (isPresent(this.element)) {
res += this.element;
}
if (isPresent(this.classNames)) {
for (var i = 0; i < this.classNames.length; i++) {
res += '.' + this.classNames[i];
}
}
if (isPresent(this.attrs)) {
for (var i = 0; i < this.attrs.length;) {
var attrName = this.attrs[i++];
var attrValue = this.attrs[i++];
res += '[' + attrName;
if (attrValue.length > 0) {
res += '=' + attrValue;
}
res += ']';
}
}
this.notSelectors.forEach(notSelector => res += `:not(${notSelector})`);
return res;
}
}
/**
* Reads a list of CssSelectors and allows to calculate which ones
* are contained in a given CssSelector.
*/
export class SelectorMatcher {
constructor() {
this._elementMap = new Map();
this._elementPartialMap = new Map();
this._classMap = new Map();
this._classPartialMap = new Map();
this._attrValueMap = new Map();
this._attrValuePartialMap = new Map();
this._listContexts = [];
}
static createNotMatcher(notSelectors) {
var notMatcher = new SelectorMatcher();
notMatcher.addSelectables(notSelectors, null);
return notMatcher;
}
addSelectables(cssSelectors, callbackCtxt) {
var listContext = null;
if (cssSelectors.length > 1) {
listContext = new SelectorListContext(cssSelectors);
this._listContexts.push(listContext);
}
for (var i = 0; i < cssSelectors.length; i++) {
this._addSelectable(cssSelectors[i], callbackCtxt, listContext);
}
}
/**
* Add an object that can be found later on by calling `match`.
* @param cssSelector A css selector
* @param callbackCtxt An opaque object that will be given to the callback of the `match` function
*/
_addSelectable(cssSelector, callbackCtxt, listContext) {
var matcher = this;
var element = cssSelector.element;
var classNames = cssSelector.classNames;
var attrs = cssSelector.attrs;
var selectable = new SelectorContext(cssSelector, callbackCtxt, listContext);
if (isPresent(element)) {
var isTerminal = attrs.length === 0 && classNames.length === 0;
if (isTerminal) {
this._addTerminal(matcher._elementMap, element, selectable);
}
else {
matcher = this._addPartial(matcher._elementPartialMap, element);
}
}
if (isPresent(classNames)) {
for (var index = 0; index < classNames.length; index++) {
var isTerminal = attrs.length === 0 && index === classNames.length - 1;
var className = classNames[index];
if (isTerminal) {
this._addTerminal(matcher._classMap, className, selectable);
}
else {
matcher = this._addPartial(matcher._classPartialMap, className);
}
}
}
if (isPresent(attrs)) {
for (var index = 0; index < attrs.length;) {
var isTerminal = index === attrs.length - 2;
var attrName = attrs[index++];
var attrValue = attrs[index++];
if (isTerminal) {
var terminalMap = matcher._attrValueMap;
var terminalValuesMap = terminalMap.get(attrName);
if (isBlank(terminalValuesMap)) {
terminalValuesMap = new Map();
terminalMap.set(attrName, terminalValuesMap);
}
this._addTerminal(terminalValuesMap, attrValue, selectable);
}
else {
var parttialMap = matcher._attrValuePartialMap;
var partialValuesMap = parttialMap.get(attrName);
if (isBlank(partialValuesMap)) {
partialValuesMap = new Map();
parttialMap.set(attrName, partialValuesMap);
}
matcher = this._addPartial(partialValuesMap, attrValue);
}
}
}
}
_addTerminal(map, name, selectable) {
var terminalList = map.get(name);
if (isBlank(terminalList)) {
terminalList = [];
map.set(name, terminalList);
}
terminalList.push(selectable);
}
_addPartial(map, name) {
var matcher = map.get(name);
if (isBlank(matcher)) {
matcher = new SelectorMatcher();
map.set(name, matcher);
}
return matcher;
}
/**
* Find the objects that have been added via `addSelectable`
* whose css selector is contained in the given css selector.
* @param cssSelector A css selector
* @param matchedCallback This callback will be called with the object handed into `addSelectable`
* @return boolean true if a match was found
*/
match(cssSelector, matchedCallback) {
var result = false;
var element = cssSelector.element;
var classNames = cssSelector.classNames;
var attrs = cssSelector.attrs;
for (var i = 0; i < this._listContexts.length; i++) {
this._listContexts[i].alreadyMatched = false;
}
result = this._matchTerminal(this._elementMap, element, cssSelector, matchedCallback) || result;
result = this._matchPartial(this._elementPartialMap, element, cssSelector, matchedCallback) ||
result;
if (isPresent(classNames)) {
for (var index = 0; index < classNames.length; index++) {
var className = classNames[index];
result =
this._matchTerminal(this._classMap, className, cssSelector, matchedCallback) || result;
result =
this._matchPartial(this._classPartialMap, className, cssSelector, matchedCallback) ||
result;
}
}
if (isPresent(attrs)) {
for (var index = 0; index < attrs.length;) {
var attrName = attrs[index++];
var attrValue = attrs[index++];
var terminalValuesMap = this._attrValueMap.get(attrName);
if (!StringWrapper.equals(attrValue, _EMPTY_ATTR_VALUE)) {
result = this._matchTerminal(terminalValuesMap, _EMPTY_ATTR_VALUE, cssSelector, matchedCallback) ||
result;
}
result = this._matchTerminal(terminalValuesMap, attrValue, cssSelector, matchedCallback) ||
result;
var partialValuesMap = this._attrValuePartialMap.get(attrName);
if (!StringWrapper.equals(attrValue, _EMPTY_ATTR_VALUE)) {
result = this._matchPartial(partialValuesMap, _EMPTY_ATTR_VALUE, cssSelector, matchedCallback) ||
result;
}
result =
this._matchPartial(partialValuesMap, attrValue, cssSelector, matchedCallback) || result;
}
}
return result;
}
/** @internal */
_matchTerminal(map, name, cssSelector, matchedCallback) {
if (isBlank(map) || isBlank(name)) {
return false;
}
var selectables = map.get(name);
var starSelectables = map.get("*");
if (isPresent(starSelectables)) {
selectables = selectables.concat(starSelectables);
}
if (isBlank(selectables)) {
return false;
}
var selectable;
var result = false;
for (var index = 0; index < selectables.length; index++) {
selectable = selectables[index];
result = selectable.finalize(cssSelector, matchedCallback) || result;
}
return result;
}
/** @internal */
_matchPartial(map, name, cssSelector, matchedCallback /*: (c: CssSelector, a: any) => void*/) {
if (isBlank(map) || isBlank(name)) {
return false;
}
var nestedSelector = map.get(name);
if (isBlank(nestedSelector)) {
return false;
}
// TODO(perf): get rid of recursion and measure again
// TODO(perf): don't pass the whole selector into the recursion,
// but only the not processed parts
return nestedSelector.match(cssSelector, matchedCallback);
}
}
export class SelectorListContext {
constructor(selectors) {
this.selectors = selectors;
this.alreadyMatched = false;
}
}
// Store context to pass back selector and context when a selector is matched
export class SelectorContext {
constructor(selector, cbContext, listContext) {
this.selector = selector;
this.cbContext = cbContext;
this.listContext = listContext;
this.notSelectors = selector.notSelectors;
}
finalize(cssSelector, callback) {
var result = true;
if (this.notSelectors.length > 0 &&
(isBlank(this.listContext) || !this.listContext.alreadyMatched)) {
var notMatcher = SelectorMatcher.createNotMatcher(this.notSelectors);
result = !notMatcher.match(cssSelector, null);
}
if (result && isPresent(callback) &&
(isBlank(this.listContext) || !this.listContext.alreadyMatched)) {
if (isPresent(this.listContext)) {
this.listContext.alreadyMatched = true;
}
callback(this.selector, this.cbContext);
}
return result;
}
}
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{Map, ListWrapper, MapWrapper} from 'angular2/src/facade/collection';\nimport {\n  isPresent,\n  isBlank,\n  RegExpWrapper,\n  RegExpMatcherWrapper,\n  StringWrapper\n} from 'angular2/src/facade/lang';\nimport {BaseException, WrappedException} from 'angular2/src/facade/exceptions';\n\nconst _EMPTY_ATTR_VALUE = '';\n\n// TODO: Can't use `const` here as\n// in Dart this is not transpiled into `final` yet...\nvar _SELECTOR_REGEXP = RegExpWrapper.create(\n    '(\\\\:not\\\\()|' +                          //\":not(\"\n    '([-\\\\w]+)|' +                            // \"tag\"\n    '(?:\\\\.([-\\\\w]+))|' +                     // \".class\"\n    '(?:\\\\[([-\\\\w*]+)(?:=([^\\\\]]*))?\\\\])|' +  // \"[name]\", \"[name=value]\" or \"[name*=value]\"\n    '(\\\\))|' +                                // \")\"\n    '(\\\\s*,\\\\s*)');                           // \",\"\n\n/**\n * A css selector contains an element name,\n * css classes and attribute/value pairs with the purpose\n * of selecting subsets out of them.\n */\nexport class CssSelector {\n  element: string = null;\n  classNames: string[] = [];\n  attrs: string[] = [];\n  notSelectors: CssSelector[] = [];\n\n  static parse(selector: string): CssSelector[] {\n    var results: CssSelector[] = [];\n    var _addResult = (res: CssSelector[], cssSel) => {\n      if (cssSel.notSelectors.length > 0 && isBlank(cssSel.element) &&\n          ListWrapper.isEmpty(cssSel.classNames) && ListWrapper.isEmpty(cssSel.attrs)) {\n        cssSel.element = \"*\";\n      }\n      res.push(cssSel);\n    };\n    var cssSelector = new CssSelector();\n    var matcher = RegExpWrapper.matcher(_SELECTOR_REGEXP, selector);\n    var match;\n    var current = cssSelector;\n    var inNot = false;\n    while (isPresent(match = RegExpMatcherWrapper.next(matcher))) {\n      if (isPresent(match[1])) {\n        if (inNot) {\n          throw new BaseException('Nesting :not is not allowed in a selector');\n        }\n        inNot = true;\n        current = new CssSelector();\n        cssSelector.notSelectors.push(current);\n      }\n      if (isPresent(match[2])) {\n        current.setElement(match[2]);\n      }\n      if (isPresent(match[3])) {\n        current.addClassName(match[3]);\n      }\n      if (isPresent(match[4])) {\n        current.addAttribute(match[4], match[5]);\n      }\n      if (isPresent(match[6])) {\n        inNot = false;\n        current = cssSelector;\n      }\n      if (isPresent(match[7])) {\n        if (inNot) {\n          throw new BaseException('Multiple selectors in :not are not supported');\n        }\n        _addResult(results, cssSelector);\n        cssSelector = current = new CssSelector();\n      }\n    }\n    _addResult(results, cssSelector);\n    return results;\n  }\n\n  isElementSelector(): boolean {\n    return isPresent(this.element) && ListWrapper.isEmpty(this.classNames) &&\n           ListWrapper.isEmpty(this.attrs) && this.notSelectors.length === 0;\n  }\n\n  setElement(element: string = null) { this.element = element; }\n\n  /** Gets a template string for an element that matches the selector. */\n  getMatchingElementTemplate(): string {\n    let tagName = isPresent(this.element) ? this.element : 'div';\n    let classAttr = this.classNames.length > 0 ? ` class=\"${this.classNames.join(' ')}\"` : '';\n\n    let attrs = '';\n    for (let i = 0; i < this.attrs.length; i += 2) {\n      let attrName = this.attrs[i];\n      let attrValue = this.attrs[i + 1] !== '' ? `=\"${this.attrs[i + 1]}\"` : '';\n      attrs += ` ${attrName}${attrValue}`;\n    }\n\n    return `<${tagName}${classAttr}${attrs}></${tagName}>`;\n  }\n\n  addAttribute(name: string, value: string = _EMPTY_ATTR_VALUE) {\n    this.attrs.push(name);\n    if (isPresent(value)) {\n      value = value.toLowerCase();\n    } else {\n      value = _EMPTY_ATTR_VALUE;\n    }\n    this.attrs.push(value);\n  }\n\n  addClassName(name: string) { this.classNames.push(name.toLowerCase()); }\n\n  toString(): string {\n    var res = '';\n    if (isPresent(this.element)) {\n      res += this.element;\n    }\n    if (isPresent(this.classNames)) {\n      for (var i = 0; i < this.classNames.length; i++) {\n        res += '.' + this.classNames[i];\n      }\n    }\n    if (isPresent(this.attrs)) {\n      for (var i = 0; i < this.attrs.length;) {\n        var attrName = this.attrs[i++];\n        var attrValue = this.attrs[i++];\n        res += '[' + attrName;\n        if (attrValue.length > 0) {\n          res += '=' + attrValue;\n        }\n        res += ']';\n      }\n    }\n    this.notSelectors.forEach(notSelector => res += `:not(${notSelector})`);\n    return res;\n  }\n}\n\n/**\n * Reads a list of CssSelectors and allows to calculate which ones\n * are contained in a given CssSelector.\n */\nexport class SelectorMatcher {\n  static createNotMatcher(notSelectors: CssSelector[]): SelectorMatcher {\n    var notMatcher = new SelectorMatcher();\n    notMatcher.addSelectables(notSelectors, null);\n    return notMatcher;\n  }\n\n  private _elementMap = new Map<string, SelectorContext[]>();\n  private _elementPartialMap = new Map<string, SelectorMatcher>();\n  private _classMap = new Map<string, SelectorContext[]>();\n  private _classPartialMap = new Map<string, SelectorMatcher>();\n  private _attrValueMap = new Map<string, Map<string, SelectorContext[]>>();\n  private _attrValuePartialMap = new Map<string, Map<string, SelectorMatcher>>();\n  private _listContexts: SelectorListContext[] = [];\n\n  addSelectables(cssSelectors: CssSelector[], callbackCtxt?: any) {\n    var listContext = null;\n    if (cssSelectors.length > 1) {\n      listContext = new SelectorListContext(cssSelectors);\n      this._listContexts.push(listContext);\n    }\n    for (var i = 0; i < cssSelectors.length; i++) {\n      this._addSelectable(cssSelectors[i], callbackCtxt, listContext);\n    }\n  }\n\n  /**\n   * Add an object that can be found later on by calling `match`.\n   * @param cssSelector A css selector\n   * @param callbackCtxt An opaque object that will be given to the callback of the `match` function\n   */\n  private _addSelectable(cssSelector: CssSelector, callbackCtxt: any,\n                         listContext: SelectorListContext) {\n    var matcher: SelectorMatcher = this;\n    var element = cssSelector.element;\n    var classNames = cssSelector.classNames;\n    var attrs = cssSelector.attrs;\n    var selectable = new SelectorContext(cssSelector, callbackCtxt, listContext);\n\n    if (isPresent(element)) {\n      var isTerminal = attrs.length === 0 && classNames.length === 0;\n      if (isTerminal) {\n        this._addTerminal(matcher._elementMap, element, selectable);\n      } else {\n        matcher = this._addPartial(matcher._elementPartialMap, element);\n      }\n    }\n\n    if (isPresent(classNames)) {\n      for (var index = 0; index < classNames.length; index++) {\n        var isTerminal = attrs.length === 0 && index === classNames.length - 1;\n        var className = classNames[index];\n        if (isTerminal) {\n          this._addTerminal(matcher._classMap, className, selectable);\n        } else {\n          matcher = this._addPartial(matcher._classPartialMap, className);\n        }\n      }\n    }\n\n    if (isPresent(attrs)) {\n      for (var index = 0; index < attrs.length;) {\n        var isTerminal = index === attrs.length - 2;\n        var attrName = attrs[index++];\n        var attrValue = attrs[index++];\n        if (isTerminal) {\n          var terminalMap = matcher._attrValueMap;\n          var terminalValuesMap = terminalMap.get(attrName);\n          if (isBlank(terminalValuesMap)) {\n            terminalValuesMap = new Map<string, SelectorContext[]>();\n            terminalMap.set(attrName, terminalValuesMap);\n          }\n          this._addTerminal(terminalValuesMap, attrValue, selectable);\n        } else {\n          var parttialMap = matcher._attrValuePartialMap;\n          var partialValuesMap = parttialMap.get(attrName);\n          if (isBlank(partialValuesMap)) {\n            partialValuesMap = new Map<string, SelectorMatcher>();\n            parttialMap.set(attrName, partialValuesMap);\n          }\n          matcher = this._addPartial(partialValuesMap, attrValue);\n        }\n      }\n    }\n  }\n\n  private _addTerminal(map: Map<string, SelectorContext[]>, name: string,\n                       selectable: SelectorContext) {\n    var terminalList = map.get(name);\n    if (isBlank(terminalList)) {\n      terminalList = [];\n      map.set(name, terminalList);\n    }\n    terminalList.push(selectable);\n  }\n\n  private _addPartial(map: Map<string, SelectorMatcher>, name: string): SelectorMatcher {\n    var matcher = map.get(name);\n    if (isBlank(matcher)) {\n      matcher = new SelectorMatcher();\n      map.set(name, matcher);\n    }\n    return matcher;\n  }\n\n  /**\n   * Find the objects that have been added via `addSelectable`\n   * whose css selector is contained in the given css selector.\n   * @param cssSelector A css selector\n   * @param matchedCallback This callback will be called with the object handed into `addSelectable`\n   * @return boolean true if a match was found\n  */\n  match(cssSelector: CssSelector, matchedCallback: (c: CssSelector, a: any) => void): boolean {\n    var result = false;\n    var element = cssSelector.element;\n    var classNames = cssSelector.classNames;\n    var attrs = cssSelector.attrs;\n\n    for (var i = 0; i < this._listContexts.length; i++) {\n      this._listContexts[i].alreadyMatched = false;\n    }\n\n    result = this._matchTerminal(this._elementMap, element, cssSelector, matchedCallback) || result;\n    result = this._matchPartial(this._elementPartialMap, element, cssSelector, matchedCallback) ||\n             result;\n\n    if (isPresent(classNames)) {\n      for (var index = 0; index < classNames.length; index++) {\n        var className = classNames[index];\n        result =\n            this._matchTerminal(this._classMap, className, cssSelector, matchedCallback) || result;\n        result =\n            this._matchPartial(this._classPartialMap, className, cssSelector, matchedCallback) ||\n            result;\n      }\n    }\n\n    if (isPresent(attrs)) {\n      for (var index = 0; index < attrs.length;) {\n        var attrName = attrs[index++];\n        var attrValue = attrs[index++];\n\n        var terminalValuesMap = this._attrValueMap.get(attrName);\n        if (!StringWrapper.equals(attrValue, _EMPTY_ATTR_VALUE)) {\n          result = this._matchTerminal(terminalValuesMap, _EMPTY_ATTR_VALUE, cssSelector,\n                                       matchedCallback) ||\n                   result;\n        }\n        result = this._matchTerminal(terminalValuesMap, attrValue, cssSelector, matchedCallback) ||\n                 result;\n\n        var partialValuesMap = this._attrValuePartialMap.get(attrName);\n        if (!StringWrapper.equals(attrValue, _EMPTY_ATTR_VALUE)) {\n          result = this._matchPartial(partialValuesMap, _EMPTY_ATTR_VALUE, cssSelector,\n                                      matchedCallback) ||\n                   result;\n        }\n        result =\n            this._matchPartial(partialValuesMap, attrValue, cssSelector, matchedCallback) || result;\n      }\n    }\n    return result;\n  }\n\n  /** @internal */\n  _matchTerminal(map: Map<string, SelectorContext[]>, name, cssSelector: CssSelector,\n                 matchedCallback: (c: CssSelector, a: any) => void): boolean {\n    if (isBlank(map) || isBlank(name)) {\n      return false;\n    }\n\n    var selectables = map.get(name);\n    var starSelectables = map.get(\"*\");\n    if (isPresent(starSelectables)) {\n      selectables = selectables.concat(starSelectables);\n    }\n    if (isBlank(selectables)) {\n      return false;\n    }\n    var selectable;\n    var result = false;\n    for (var index = 0; index < selectables.length; index++) {\n      selectable = selectables[index];\n      result = selectable.finalize(cssSelector, matchedCallback) || result;\n    }\n    return result;\n  }\n\n  /** @internal */\n  _matchPartial(map: Map<string, SelectorMatcher>, name, cssSelector: CssSelector,\n                matchedCallback /*: (c: CssSelector, a: any) => void*/): boolean {\n    if (isBlank(map) || isBlank(name)) {\n      return false;\n    }\n    var nestedSelector = map.get(name);\n    if (isBlank(nestedSelector)) {\n      return false;\n    }\n    // TODO(perf): get rid of recursion and measure again\n    // TODO(perf): don't pass the whole selector into the recursion,\n    // but only the not processed parts\n    return nestedSelector.match(cssSelector, matchedCallback);\n  }\n}\n\n\nexport class SelectorListContext {\n  alreadyMatched: boolean = false;\n\n  constructor(public selectors: CssSelector[]) {}\n}\n\n// Store context to pass back selector and context when a selector is matched\nexport class SelectorContext {\n  notSelectors: CssSelector[];\n\n  constructor(public selector: CssSelector, public cbContext: any,\n              public listContext: SelectorListContext) {\n    this.notSelectors = selector.notSelectors;\n  }\n\n  finalize(cssSelector: CssSelector, callback: (c: CssSelector, a: any) => void): boolean {\n    var result = true;\n    if (this.notSelectors.length > 0 &&\n        (isBlank(this.listContext) || !this.listContext.alreadyMatched)) {\n      var notMatcher = SelectorMatcher.createNotMatcher(this.notSelectors);\n      result = !notMatcher.match(cssSelector, null);\n    }\n    if (result && isPresent(callback) &&\n        (isBlank(this.listContext) || !this.listContext.alreadyMatched)) {\n      if (isPresent(this.listContext)) {\n        this.listContext.alreadyMatched = true;\n      }\n      callback(this.selector, this.cbContext);\n    }\n    return result;\n  }\n}\n"]}