[176] | 1 | /* |
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| 2 | * Copyright 2002-2004 The Apache Software Foundation |
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| 3 | * |
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 5 | * you may not use this file except in compliance with the License. |
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| 6 | * You may obtain a copy of the License at |
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| 7 | * |
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 9 | * |
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| 10 | * Unless required by applicable law or agreed to in writing, software |
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 13 | * See the License for the specific language governing permissions and |
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| 14 | * limitations under the License. |
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| 15 | */ |
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| 16 | function init() |
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| 17 | { //embedded in the doc |
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| 18 | //ndeSetTextSize(); |
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| 19 | } |
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| 20 | |
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| 21 | function checkBrowser(){ |
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| 22 | if (!document.getElementsByTagName){ |
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| 23 | return true; |
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| 24 | } |
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| 25 | else{ |
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| 26 | return false; |
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| 27 | } |
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| 28 | } |
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| 29 | |
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| 30 | |
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| 31 | function ndeSetTextSize(chgsize,rs) |
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| 32 | { |
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| 33 | var startSize; |
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| 34 | var newSize; |
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| 35 | |
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| 36 | if (!checkBrowser) |
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| 37 | { |
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| 38 | return; |
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| 39 | } |
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| 40 | |
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| 41 | startSize = parseInt(ndeGetDocTextSize()); |
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| 42 | |
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| 43 | if (!startSize) |
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| 44 | { |
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| 45 | startSize = 16; |
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| 46 | } |
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| 47 | |
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| 48 | switch (chgsize) |
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| 49 | { |
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| 50 | case 'incr': |
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| 51 | newSize = startSize + 2; |
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| 52 | break; |
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| 53 | |
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| 54 | case 'decr': |
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| 55 | newSize = startSize - 2; |
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| 56 | break; |
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| 57 | |
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| 58 | case 'reset': |
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| 59 | if (rs) {newSize = rs;} else {newSize = 16;} |
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| 60 | break; |
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| 61 | |
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| 62 | default: |
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| 63 | try{ |
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| 64 | newSize = parseInt(ndeReadCookie("nde-textsize")); |
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| 65 | } |
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| 66 | catch(e){ |
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| 67 | alert(e); |
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| 68 | } |
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| 69 | |
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| 70 | if (!newSize || newSize == 'NaN') |
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| 71 | { |
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| 72 | newSize = startSize; |
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| 73 | } |
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| 74 | break; |
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| 75 | |
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| 76 | } |
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| 77 | |
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| 78 | if (newSize < 10) |
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| 79 | { |
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| 80 | newSize = 10; |
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| 81 | } |
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| 82 | |
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| 83 | newSize += 'px'; |
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| 84 | |
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| 85 | document.getElementsByTagName('html')[0].style.fontSize = newSize; |
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| 86 | document.getElementsByTagName('body')[0].style.fontSize = newSize; |
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| 87 | |
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| 88 | ndeCreateCookie("nde-textsize", newSize, 365); |
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| 89 | } |
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| 90 | |
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| 91 | function ndeGetDocTextSize() |
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| 92 | { |
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| 93 | if (!checkBrowser) |
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| 94 | { |
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| 95 | return 0; |
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| 96 | } |
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| 97 | |
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| 98 | var size = 0; |
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| 99 | var body = document.getElementsByTagName('body')[0]; |
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| 100 | |
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| 101 | if (body.style && body.style.fontSize) |
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| 102 | { |
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| 103 | size = body.style.fontSize; |
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| 104 | } |
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| 105 | else if (typeof(getComputedStyle) != 'undefined') |
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| 106 | { |
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| 107 | size = getComputedStyle(body,'').getPropertyValue('font-size'); |
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| 108 | } |
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| 109 | else if (body.currentStyle) |
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| 110 | { |
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| 111 | size = body.currentStyle.fontSize; |
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| 112 | } |
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| 113 | |
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| 114 | //fix IE bug |
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| 115 | if( isNaN(size)){ |
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| 116 | if(size.substring(size.length-1)=="%"){ |
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| 117 | return |
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| 118 | } |
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| 119 | |
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| 120 | } |
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| 121 | |
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| 122 | return size; |
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| 123 | |
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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 | function ndeCreateCookie(name,value,days) |
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| 129 | { |
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| 130 | var cookie = name + "=" + value + ";"; |
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| 131 | |
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| 132 | if (days) |
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| 133 | { |
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| 134 | var date = new Date(); |
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| 135 | date.setTime(date.getTime()+(days*24*60*60*1000)); |
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| 136 | cookie += " expires=" + date.toGMTString() + ";"; |
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| 137 | } |
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| 138 | cookie += " path=/"; |
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| 139 | |
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| 140 | document.cookie = cookie; |
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| 141 | |
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| 142 | } |
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| 143 | |
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| 144 | function ndeReadCookie(name) |
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| 145 | { |
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| 146 | var nameEQ = name + "="; |
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| 147 | var ca = document.cookie.split(';'); |
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| 148 | |
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| 149 | |
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| 150 | for(var i = 0; i < ca.length; i++) |
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| 151 | { |
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| 152 | var c = ca[i]; |
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| 153 | while (c.charAt(0) == ' ') |
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| 154 | { |
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| 155 | c = c.substring(1, c.length); |
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| 156 | } |
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| 157 | |
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| 158 | ctest = c.substring(0,name.length); |
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| 159 | |
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| 160 | if(ctest == name){ |
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| 161 | return c.substring(nameEQ.length,c.length); |
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| 162 | } |
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| 163 | } |
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| 164 | return null; |
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| 165 | } |
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