///////////////////////////////////////////////////////////////////////////
// Copyright © Esri. 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.
///////////////////////////////////////////////////////////////////////////

define(['dojo/_base/declare',
  'dojo/_base/html',
  'dojo/string',
  'dojo/keys',
  'dijit/_WidgetBase',
  'dijit/_TemplatedMixin'
],
function(declare, html, string, keys, _WidgetBase, _TemplatedMixin) {
  return declare([_WidgetBase, _TemplatedMixin], {
    baseClass: 'jimu-search',
    declaredClass: 'jimu.dijit.Search',
    templateString:
    '<div>' +
      '<span class="jimu-input-wrapper" style="left:0;right:0;">' +
      '<input class="jimu-input" style="background:#fafafc;"' +
      ' data-dojo-attach-point="inputSearch"' +
      ' data-dojo-attach-event="onKeydown: _onKeyDown, onKeyUp: _onKeyUp"/></span>' +
      '<div class="search-btn jimu-icon jimu-icon-search" data-dojo-attach-point="searchBtn"' +
      ' data-dojo-attach-event="onClick: _onBtnClick"></div>' +
    '</div>',

    //placeholder: String
    placeholder: '',

    //onSearch: Function
    //  the callback function that does the search function
    onSearch: null,

    //searchWhenInput: Boolean
    //  if true, call onSearch when input, or call onSearch when enter or click search button
    searchWhenInput: false,

    postCreate: function(){
      this.inherited(arguments);
      if(this.placeholder){
        html.setAttr(this.inputSearch, 'placeholder', this.placeholder);
      }
    },

    getValue: function(){
      return string.trim(this.inputSearch.value);
    },

    doSearch: function(){
      if(this.onSearch){
        this.onSearch(this.getValue());
      }
    },

    _onKeyDown: function(evt){
      this.doChange();
      var keyNum = evt.keyCode !== undefined ? evt.keyCode : evt.which;
      if (keyNum === keys.ENTER) {
        this.doSearch();
      }
      evt.stopPropagation();
    },

    _onKeyUp: function(){
      if(this.searchWhenInput){
        this.doSearch();
      }
    },

    _onBtnClick: function(){
      this.doSearch();
    },

    doChange: function(){
      if(this.onChange){
        this.onChange(this.getValue());
      }
    }
  });
});