colonymech / docs / www / colonyscout / internal / includes / uploadify / com / adobe / utils / ArrayUtil.as @ f59acf11
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1 | f59acf11 | Dan Shope | /* |
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2 | Copyright (c) 2008, Adobe Systems Incorporated |
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3 | All rights reserved. |
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4 | |||
5 | Redistribution and use in source and binary forms, with or without |
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6 | modification, are permitted provided that the following conditions are |
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7 | met: |
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8 | |||
9 | * Redistributions of source code must retain the above copyright notice, |
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10 | this list of conditions and the following disclaimer. |
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11 | |||
12 | * Redistributions in binary form must reproduce the above copyright |
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13 | notice, this list of conditions and the following disclaimer in the |
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14 | documentation and/or other materials provided with the distribution. |
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15 | |||
16 | * Neither the name of Adobe Systems Incorporated nor the names of its |
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17 | contributors may be used to endorse or promote products derived from |
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18 | this software without specific prior written permission. |
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19 | |||
20 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
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21 | IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
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22 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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23 | PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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24 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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25 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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26 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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27 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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28 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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29 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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30 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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31 | */ |
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32 | |||
33 | package com.adobe.utils |
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34 | { |
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35 | |||
36 | /** |
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37 | * Class that contains static utility methods for manipulating and working |
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38 | * with Arrays. |
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39 | * |
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40 | * Note that all APIs assume that they are working with well formed arrays. |
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41 | * i.e. they will only manipulate indexed values. |
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42 | * |
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43 | * @langversion ActionScript 3.0 |
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44 | * @playerversion Flash 9.0 |
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45 | * @tiptext |
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46 | */ |
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47 | public class ArrayUtil |
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48 | { |
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49 | |||
50 | /** |
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51 | * Determines whether the specified array contains the specified value. |
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52 | * |
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53 | * @param arr The array that will be checked for the specified value. |
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54 | * |
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55 | * @param value The object which will be searched for within the array |
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56 | * |
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57 | * @return True if the array contains the value, False if it does not. |
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58 | * |
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59 | * @langversion ActionScript 3.0 |
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60 | * @playerversion Flash 9.0 |
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61 | * @tiptext |
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62 | */ |
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63 | public static function arrayContainsValue(arr:Array, value:Object):Boolean |
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64 | { |
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65 | return (arr.indexOf(value) != -1); |
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66 | } |
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67 | |||
68 | /** |
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69 | * Remove all instances of the specified value from the array, |
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70 | * |
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71 | * @param arr The array from which the value will be removed |
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72 | * |
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73 | * @param value The object that will be removed from the array. |
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74 | * |
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75 | * @langversion ActionScript 3.0 |
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76 | * @playerversion Flash 9.0 |
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77 | * @tiptext |
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78 | */ |
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79 | public static function removeValueFromArray(arr:Array, value:Object):void |
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80 | { |
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81 | var len:uint = arr.length; |
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82 | |||
83 | for(var i:Number = len; i > -1; i--) |
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84 | { |
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85 | if(arr[i] === value) |
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86 | { |
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87 | arr.splice(i, 1); |
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88 | } |
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89 | } |
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90 | } |
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91 | |||
92 | /** |
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93 | * Create a new array that only contains unique instances of objects |
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94 | * in the specified array. |
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95 | * |
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96 | * Basically, this can be used to remove duplication object instances |
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97 | * from an array |
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98 | * |
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99 | * @param arr The array which contains the values that will be used to |
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100 | * create the new array that contains no duplicate values. |
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101 | * |
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102 | * @return A new array which only contains unique items from the specified |
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103 | * array. |
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104 | * |
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105 | * @langversion ActionScript 3.0 |
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106 | * @playerversion Flash 9.0 |
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107 | * @tiptext |
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108 | */ |
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109 | public static function createUniqueCopy(a:Array):Array |
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110 | { |
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111 | var newArray:Array = new Array(); |
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112 | |||
113 | var len:Number = a.length; |
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114 | var item:Object; |
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115 | |||
116 | for (var i:uint = 0; i < len; ++i) |
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117 | { |
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118 | item = a[i]; |
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119 | |||
120 | if(ArrayUtil.arrayContainsValue(newArray, item)) |
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121 | { |
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122 | continue; |
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123 | } |
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124 | |||
125 | newArray.push(item); |
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126 | } |
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127 | |||
128 | return newArray; |
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129 | } |
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130 | |||
131 | /** |
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132 | * Creates a copy of the specified array. |
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133 | * |
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134 | * Note that the array returned is a new array but the items within the |
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135 | * array are not copies of the items in the original array (but rather |
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136 | * references to the same items) |
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137 | * |
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138 | * @param arr The array that will be copies |
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139 | * |
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140 | * @return A new array which contains the same items as the array passed |
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141 | * in. |
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142 | * |
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143 | * @langversion ActionScript 3.0 |
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144 | * @playerversion Flash 9.0 |
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145 | * @tiptext |
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146 | */ |
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147 | public static function copyArray(arr:Array):Array |
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148 | { |
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149 | return arr.slice(); |
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150 | } |
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151 | |||
152 | /** |
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153 | * Compares two arrays and returns a boolean indicating whether the arrays |
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154 | * contain the same values at the same indexes. |
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155 | * |
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156 | * @param arr1 The first array that will be compared to the second. |
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157 | * |
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158 | * @param arr2 The second array that will be compared to the first. |
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159 | * |
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160 | * @return True if the arrays contains the same values at the same indexes. |
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161 | False if they do not. |
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162 | * |
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163 | * @langversion ActionScript 3.0 |
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164 | * @playerversion Flash 9.0 |
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165 | * @tiptext |
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166 | */ |
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167 | public static function arraysAreEqual(arr1:Array, arr2:Array):Boolean |
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168 | { |
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169 | if(arr1.length != arr2.length) |
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170 | { |
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171 | return false; |
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172 | } |
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173 | |||
174 | var len:Number = arr1.length; |
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175 | |||
176 | for(var i:Number = 0; i < len; i++) |
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177 | { |
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178 | if(arr1[i] !== arr2[i]) |
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179 | { |
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180 | return false; |
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181 | } |
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182 | } |
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183 | |||
184 | return true; |
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185 | } |
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186 | } |
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187 | } |