1 | /* |
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2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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3 | * contributor license agreements. See the NOTICE file distributed with |
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4 | * this work for additional information regarding copyright ownership. |
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5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
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6 | * (the "License"); you may not use this file except in compliance with |
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7 | * the License. You may obtain a copy of the License at |
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8 | * |
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9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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10 | * |
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11 | * Unless required by applicable law or agreed to in writing, software |
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12 | * distributed under the License is distributed on an "AS IS" BASIS, |
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13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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14 | * See the License for the specific language governing permissions and |
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15 | * limitations under the License. |
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16 | */ |
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17 | function init() |
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18 | { //embedded in the doc |
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19 | //ndeSetTextSize(); |
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20 | } |
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21 | |
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22 | function checkBrowser(){ |
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23 | if (!document.getElementsByTagName){ |
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24 | return true; |
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25 | } |
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26 | else{ |
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27 | return false; |
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28 | } |
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29 | } |
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30 | |
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31 | |
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32 | function ndeSetTextSize(chgsize,rs) |
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33 | { |
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34 | var startSize; |
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35 | var newSize; |
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36 | |
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37 | if (!checkBrowser) |
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38 | { |
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39 | return; |
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40 | } |
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41 | |
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42 | startSize = parseInt(ndeGetDocTextSize()); |
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43 | |
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44 | if (!startSize) |
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45 | { |
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46 | startSize = 16; |
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47 | } |
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48 | |
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49 | switch (chgsize) |
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50 | { |
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51 | case 'incr': |
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52 | newSize = startSize + 2; |
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53 | break; |
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54 | |
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55 | case 'decr': |
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56 | newSize = startSize - 2; |
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57 | break; |
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58 | |
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59 | case 'reset': |
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60 | if (rs) {newSize = rs;} else {newSize = 16;} |
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61 | break; |
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62 | |
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63 | default: |
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64 | try{ |
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65 | newSize = parseInt(ndeReadCookie("nde-textsize")); |
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66 | } |
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67 | catch(e){ |
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68 | alert(e); |
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69 | } |
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70 | |
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71 | if (!newSize || newSize == 'NaN') |
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72 | { |
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73 | newSize = startSize; |
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74 | } |
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75 | break; |
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76 | |
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77 | } |
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78 | |
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79 | if (newSize < 10) |
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80 | { |
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81 | newSize = 10; |
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82 | } |
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83 | |
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84 | newSize += 'px'; |
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85 | |
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86 | document.getElementsByTagName('html')[0].style.fontSize = newSize; |
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87 | document.getElementsByTagName('body')[0].style.fontSize = newSize; |
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88 | |
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89 | ndeCreateCookie("nde-textsize", newSize, 365); |
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90 | } |
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91 | |
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92 | function ndeGetDocTextSize() |
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93 | { |
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94 | if (!checkBrowser) |
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95 | { |
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96 | return 0; |
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97 | } |
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98 | |
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99 | var size = 0; |
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100 | var body = document.getElementsByTagName('body')[0]; |
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101 | |
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102 | if (body.style && body.style.fontSize) |
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103 | { |
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104 | size = body.style.fontSize; |
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105 | } |
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106 | else if (typeof(getComputedStyle) != 'undefined') |
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107 | { |
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108 | size = getComputedStyle(body,'').getPropertyValue('font-size'); |
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109 | } |
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110 | else if (body.currentStyle) |
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111 | { |
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112 | size = body.currentStyle.fontSize; |
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113 | } |
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114 | |
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115 | //fix IE bug |
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116 | if( isNaN(size)){ |
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117 | if(size.substring(size.length-1)=="%"){ |
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118 | return |
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119 | } |
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120 | |
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121 | } |
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122 | |
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123 | return size; |
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124 | |
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125 | } |
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126 | |
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127 | |
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128 | |
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129 | function ndeCreateCookie(name,value,days) |
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130 | { |
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131 | var cookie = name + "=" + value + ";"; |
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132 | |
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133 | if (days) |
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134 | { |
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135 | var date = new Date(); |
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136 | date.setTime(date.getTime()+(days*24*60*60*1000)); |
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137 | cookie += " expires=" + date.toGMTString() + ";"; |
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138 | } |
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139 | cookie += " path=/"; |
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140 | |
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141 | document.cookie = cookie; |
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142 | |
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143 | } |
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144 | |
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145 | function ndeReadCookie(name) |
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146 | { |
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147 | var nameEQ = name + "="; |
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148 | var ca = document.cookie.split(';'); |
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149 | |
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150 | |
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151 | for(var i = 0; i < ca.length; i++) |
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152 | { |
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153 | var c = ca[i]; |
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154 | while (c.charAt(0) == ' ') |
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155 | { |
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156 | c = c.substring(1, c.length); |
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157 | } |
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158 | |
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159 | ctest = c.substring(0,name.length); |
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160 | |
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161 | if(ctest == name){ |
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162 | return c.substring(nameEQ.length,c.length); |
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163 | } |
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164 | } |
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165 | return null; |
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166 | } |
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