// Copyright 2007 The Closure Library Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

/**
 * @fileoverview DOM pattern to match the start of a tag.
 *
 * @author robbyw@google.com (Robby Walker)
 */

goog.provide('goog.dom.pattern.StartTag');

goog.require('goog.dom.TagWalkType');
goog.require('goog.dom.pattern.Tag');



/**
 * Pattern object that matches an opening tag.
 *
 * @param {string|RegExp} tag Name of the tag.  Also will accept a regular
 *     expression to match against the tag name.
 * @param {Object=} opt_attrs Optional map of attribute names to desired values.
 *     This pattern will only match when all attributes are present and match
 *     the string or regular expression value provided here.
 * @param {Object=} opt_styles Optional map of CSS style names to desired
 *     values. This pattern will only match when all styles are present and
 *     match the string or regular expression value provided here.
 * @param {Function=} opt_test Optional function that takes the element as a
 *     parameter and returns true if this pattern should match it.
 * @constructor
 * @extends {goog.dom.pattern.Tag}
 */
goog.dom.pattern.StartTag = function(tag, opt_attrs, opt_styles, opt_test) {
  goog.dom.pattern.Tag.call(
      this, tag, goog.dom.TagWalkType.START_TAG, opt_attrs, opt_styles,
      opt_test);
};
goog.inherits(goog.dom.pattern.StartTag, goog.dom.pattern.Tag);
