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 | /** |
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17 | * This script, when included in a html file, builds a neat breadcrumb trail |
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18 | * based on its url. That is, if it doesn't contains bugs (I'm relatively |
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19 | * sure it does). |
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20 | * |
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21 | * Typical usage: |
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22 | * <script type="text/javascript" language="JavaScript" src="breadcrumbs.js"></script> |
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23 | */ |
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24 | |
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25 | /** |
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26 | * IE 5 on Mac doesn't know Array.push. |
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27 | * |
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28 | * Implement it - courtesy to fritz. |
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29 | */ |
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30 | var abc = new Array(); |
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31 | if (!abc.push) { |
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32 | Array.prototype.push = function(what){this[this.length]=what} |
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33 | } |
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34 | |
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35 | /* ======================================================================== |
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36 | CONSTANTS |
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37 | ======================================================================== */ |
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38 | |
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39 | /** |
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40 | * Two-dimensional array containing extra crumbs to place at the front of |
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41 | * the trail. Specify first the name of the crumb, then the URI that belongs |
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42 | * to it. You'll need to modify this for every domain or subdomain where |
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43 | * you use this script (you can leave it as an empty array if you wish) |
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44 | */ |
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45 | var PREPREND_CRUMBS = new Array(); |
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46 | |
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47 | var link1 = "@skinconfig.trail.link1.name@"; |
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48 | var link2 = "@skinconfig.trail.link2.name@"; |
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49 | var link3 = "@skinconfig.trail.link3.name@"; |
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50 | |
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51 | var href1 = "@skinconfig.trail.link1.href@"; |
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52 | var href2 = "@skinconfig.trail.link2.href@"; |
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53 | var href3 = "@skinconfig.trail.link3.href@"; |
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54 | |
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55 | if(!(link1=="")&&!link1.indexOf( "@" ) == 0){ |
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56 | PREPREND_CRUMBS.push( new Array( link1, href1 ) ); |
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57 | } |
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58 | if(!(link2=="")&&!link2.indexOf( "@" ) == 0){ |
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59 | PREPREND_CRUMBS.push( new Array( link2, href2 ) ); |
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60 | } |
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61 | if(!(link3=="")&&!link3.indexOf( "@" ) == 0){ |
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62 | PREPREND_CRUMBS.push( new Array( link3, href3 ) ); |
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63 | } |
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64 | |
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65 | /** |
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66 | * String to include between crumbs: |
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67 | */ |
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68 | var DISPLAY_SEPARATOR = " > "; |
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69 | /** |
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70 | * String to include at the beginning of the trail |
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71 | */ |
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72 | var DISPLAY_PREPREND = " > "; |
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73 | /** |
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74 | * String to include at the end of the trail |
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75 | */ |
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76 | var DISPLAY_POSTPREND = ""; |
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77 | |
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78 | /** |
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79 | * CSS Class to use for a single crumb: |
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80 | */ |
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81 | var CSS_CLASS_CRUMB = "breadcrumb"; |
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82 | |
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83 | /** |
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84 | * CSS Class to use for the complete trail: |
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85 | */ |
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86 | var CSS_CLASS_TRAIL = "breadcrumbTrail"; |
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87 | |
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88 | /** |
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89 | * CSS Class to use for crumb separator: |
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90 | */ |
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91 | var CSS_CLASS_SEPARATOR = "crumbSeparator"; |
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92 | |
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93 | /** |
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94 | * Array of strings containing common file extensions. We use this to |
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95 | * determine what part of the url to ignore (if it contains one of the |
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96 | * string specified here, we ignore it). |
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97 | */ |
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98 | var FILE_EXTENSIONS = new Array( ".html", ".htm", ".jsp", ".php", ".php3", ".php4" ); |
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99 | |
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100 | /** |
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101 | * String that separates parts of the breadcrumb trail from each other. |
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102 | * When this is no longer a slash, I'm sure I'll be old and grey. |
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103 | */ |
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104 | var PATH_SEPARATOR = "/"; |
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105 | |
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106 | /* ======================================================================== |
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107 | UTILITY FUNCTIONS |
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108 | ======================================================================== */ |
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109 | /** |
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110 | * Capitalize first letter of the provided string and return the modified |
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111 | * string. |
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112 | */ |
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113 | function sentenceCase( string ) |
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114 | { return string; |
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115 | //var lower = string.toLowerCase(); |
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116 | //return lower.substr(0,1).toUpperCase() + lower.substr(1); |
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117 | } |
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118 | |
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119 | /** |
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120 | * Returns an array containing the names of all the directories in the |
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121 | * current document URL |
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122 | */ |
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123 | function getDirectoriesInURL() |
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124 | { |
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125 | var trail = document.location.pathname.split( PATH_SEPARATOR ); |
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126 | |
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127 | // check whether last section is a file or a directory |
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128 | var lastcrumb = trail[trail.length-1]; |
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129 | for( var i = 0; i < FILE_EXTENSIONS.length; i++ ) |
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130 | { |
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131 | if( lastcrumb.indexOf( FILE_EXTENSIONS[i] ) ) |
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132 | { |
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133 | // it is, remove it and send results |
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134 | return trail.slice( 1, trail.length-1 ); |
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135 | } |
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136 | } |
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137 | |
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138 | // it's not; send the trail unmodified |
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139 | return trail.slice( 1, trail.length ); |
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140 | } |
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141 | |
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142 | /* ======================================================================== |
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143 | BREADCRUMB FUNCTIONALITY |
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144 | ======================================================================== */ |
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145 | /** |
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146 | * Return a two-dimensional array describing the breadcrumbs based on the |
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147 | * array of directories passed in. |
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148 | */ |
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149 | function getBreadcrumbs( dirs ) |
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150 | { |
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151 | var prefix = "/"; |
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152 | var postfix = "/"; |
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153 | |
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154 | // the array we will return |
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155 | var crumbs = new Array(); |
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156 | |
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157 | if( dirs != null ) |
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158 | { |
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159 | for( var i = 0; i < dirs.length; i++ ) |
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160 | { |
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161 | prefix += dirs[i] + postfix; |
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162 | crumbs.push( new Array( dirs[i], prefix ) ); |
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163 | } |
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164 | } |
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165 | |
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166 | // preprend the PREPREND_CRUMBS |
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167 | if(PREPREND_CRUMBS.length > 0 ) |
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168 | { |
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169 | return PREPREND_CRUMBS.concat( crumbs ); |
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170 | } |
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171 | |
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172 | return crumbs; |
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173 | } |
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174 | |
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175 | /** |
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176 | * Return a string containing a simple text breadcrumb trail based on the |
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177 | * two-dimensional array passed in. |
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178 | */ |
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179 | function getCrumbTrail( crumbs ) |
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180 | { |
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181 | var xhtml = DISPLAY_PREPREND; |
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182 | |
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183 | for( var i = 0; i < crumbs.length; i++ ) |
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184 | { |
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185 | xhtml += '<a href="' + crumbs[i][1] + '" >'; |
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186 | xhtml += unescape( crumbs[i][0] ) + '</a>'; |
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187 | if( i != (crumbs.length-1) ) |
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188 | { |
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189 | xhtml += DISPLAY_SEPARATOR; |
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190 | } |
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191 | } |
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192 | |
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193 | xhtml += DISPLAY_POSTPREND; |
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194 | |
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195 | return xhtml; |
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196 | } |
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197 | |
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198 | /** |
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199 | * Return a string containing an XHTML breadcrumb trail based on the |
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200 | * two-dimensional array passed in. |
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201 | */ |
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202 | function getCrumbTrailXHTML( crumbs ) |
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203 | { |
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204 | var xhtml = '<span class="' + CSS_CLASS_TRAIL + '">'; |
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205 | xhtml += DISPLAY_PREPREND; |
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206 | |
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207 | for( var i = 0; i < crumbs.length; i++ ) |
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208 | { |
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209 | xhtml += '<a href="' + crumbs[i][1] + '" class="' + CSS_CLASS_CRUMB + '">'; |
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210 | xhtml += unescape( crumbs[i][0] ) + '</a>'; |
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211 | if( i != (crumbs.length-1) ) |
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212 | { |
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213 | xhtml += '<span class="' + CSS_CLASS_SEPARATOR + '">' + DISPLAY_SEPARATOR + '</span>'; |
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214 | } |
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215 | } |
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216 | |
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217 | xhtml += DISPLAY_POSTPREND; |
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218 | xhtml += '</span>'; |
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219 | |
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220 | return xhtml; |
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221 | } |
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222 | |
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223 | /* ======================================================================== |
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224 | PRINT BREADCRUMB TRAIL |
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225 | ======================================================================== */ |
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226 | |
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227 | // check if we're local; if so, only print the PREPREND_CRUMBS |
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228 | if( document.location.href.toLowerCase().indexOf( "http://" ) == -1 ) |
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229 | { |
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230 | document.write( getCrumbTrail( getBreadcrumbs() ) ); |
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231 | } |
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232 | else |
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233 | { |
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234 | document.write( getCrumbTrail( getBreadcrumbs( getDirectoriesInURL() ) ) ); |
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235 | } |
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236 | |
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