1 | /**
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2 | * Tabs class for handling HTML/CSS tabs
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3 | *
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4 | * Copyright (C) 2003 Dipl.-Inform. Kai Hofmann and probusiness AG
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5 | *
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6 | * This library is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU Lesser General Public
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8 | * License as published by the Free Software Foundation; either
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9 | * version 2.1 of the License, or (at your option) any later version.
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10 | *
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11 | * This library is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | * Lesser General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU Lesser General Public
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17 | * License along with this library; if not, write to the Free Software
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18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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19 | *
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20 | * Contact information:
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21 | * Dipl.-Inform. Kai Hofmann
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22 | * Arberger Heerstr. 92
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23 | * 28307 Bremen
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24 | * Germany
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25 | *
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26 | *
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27 | * probusiness AG
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28 | * Expo-Plaza-Nr. 1
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29 | * 30539 Hannover
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30 | * Germany
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31 | *
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32 | *
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33 | * @version 1.0
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34 | * @author hofmann@hofmann-int.de
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35 | *
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36 | * @argument nrTabs Number of Tabs to handle
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37 | * @argument activeCSSclass CSS class name for active tabs (display:inline)
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38 | * @argument inactiveCSSclass CSS class name for inactive tabs (display:none)
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39 | * @argument HTMLtabID HTML ID name prefix that would be used with the tab number as tab name.
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40 | * @argument HTMLtabcontentID HTML ID prefix for the tab content used with the tab number
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41 | * @argument HTMLtabselectorID HTML ID prefix for a selectbox used to switch between the tabs
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42 | * @argument HTMLtabradioID HTML ID prefix for radio button input fields used to switch between the tabs
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43 | * @argument tabPageKey URL parameter name to use for setting/getting the actual tab
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44 | */
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45 | function Tabs(nrTabs,activeCSSclass,inactiveCSSclass,HTMLtabID,HTMLtabcontentID,HTMLtabselectorID,HTMLtabradioID,tabPageKey)
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46 | {
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47 | this.nrTabs = nrTabs;
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48 | this.activeCSSclass = activeCSSclass;
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49 | this.inactiveCSSclass = inactiveCSSclass;
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50 | this.HTMLtabID = HTMLtabID;
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51 | this.HTMLtabcontentID = HTMLtabcontentID;
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52 | this.HTMLtabselectorID = HTMLtabselectorID;
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53 | this.HTMLtabradioID = HTMLtabradioID;
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54 | this.tabPageKey = tabPageKey;
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55 |
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56 | if (typeof(_tabs_prototype_called) == 'undefined')
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57 | {
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58 | _tabs_prototype_called = true;
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59 | Tabs.prototype.setActive = setActive;
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60 | Tabs.prototype.setInactive = setInactive;
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61 | Tabs.prototype.isActive = isActive;
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62 | Tabs.prototype.getActive = getActive;
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63 | Tabs.prototype.disableAll = disableAll;
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64 | Tabs.prototype.display = display;
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65 | Tabs.prototype.changeToActive = changeToActive;
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66 | Tabs.prototype.init = init;
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67 | }
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68 |
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69 |
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70 | /**
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71 | * Set tab as active
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72 | *
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73 | * @argument tabnr The tab number (1-nrTabs) of the tab that should be active
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74 | */
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75 | function setActive(tabnr)
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76 | {
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77 | if ((tabnr > 0) && (tabnr <= this.nrTabs))
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78 | {
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79 | if(document.getElementById(this.HTMLtabID + tabnr))
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80 | document.getElementById(this.HTMLtabID + tabnr).className = this.activeCSSclass;
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81 | if(document.getElementById(this.HTMLtabcontentID + tabnr))
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82 | document.getElementById(this.HTMLtabcontentID + tabnr).className = this.activeCSSclass;
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83 |
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84 | if(document.getElementById(this.HTMLtabselectorID))
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85 | document.getElementById(this.HTMLtabselectorID).selectedIndex = tabnr-1;
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86 | if(document.getElementById(this.HTMLtabradioID + tabnr))
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87 | document.getElementById(this.HTMLtabradioID + tabnr).checked = true;
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88 | }
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89 | }
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90 |
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91 |
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92 |
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93 | /**
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94 | * Set tab as inactive
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95 | *
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96 | * @argument tabnr The tab number (1-nrTabs) of the tab that should be inactive
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97 | */
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98 | function setInactive(tabnr)
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99 | {
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100 | if ((tabnr > 0) && (tabnr <= this.nrTabs))
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101 | {
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102 | if(document.getElementById(this.HTMLtabID + tabnr))
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103 | document.getElementById(this.HTMLtabID + tabnr).className = this.inactiveCSSclass;
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104 | if(document.getElementById(this.HTMLtabcontentID + tabnr))
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105 | document.getElementById(this.HTMLtabcontentID + tabnr).className = this.inactiveCSSclass;
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106 | }
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107 | }
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108 |
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109 |
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110 | /**
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111 | * Test if tab is active
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112 | *
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113 | * @argument tabnr The tab number (1-nrTabs) of the tab that should be tested
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114 | * @returns boolean - true if tab is active, false otherwise
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115 | */
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116 | function isActive(tabnr)
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117 | {
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118 | return(document.getElementById(HTMLtabID + tabnr).className == this.activeCSSclass);
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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 | * Get the active tab number
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124 | *
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125 | * @returns Tab (1-nrTabs) that is currently active or 0 if non is active.
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126 | */
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127 | function getActive()
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128 | {
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129 | for (i = 1; i <= this.nrTabs; ++i)
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130 | {
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131 | if (this.isActive(i))
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132 | {
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133 | return(i);
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134 | }
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135 | }
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136 | return(0);
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137 | }
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138 |
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139 |
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140 | /**
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141 | * Disable all tabs
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142 | */
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143 | function disableAll()
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144 | {
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145 | for (i = 1; i <= this.nrTabs; ++i)
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146 | {
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147 | this.setInactive(i);
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148 | }
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149 | }
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150 |
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151 |
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152 | /**
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153 | * Disable all tabs and then display the tab number given
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154 | *
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155 | * @argument tabnr Tab number to display
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156 | */
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157 | function display(tabnr)
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158 | {
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159 | for (i = 1; i <= this.nrTabs; ++i)
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160 | {
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161 | if (i == tabnr)
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162 | this.setActive(tabnr);
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163 | else
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164 | this.setInactive(i);
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165 | }
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166 | }
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167 |
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168 |
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169 | /**
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170 | * Loop over all tabs - switch off currently active tabs and display the new tab
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171 | *
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172 | * @argument tabnr Tab number to display
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173 | */
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174 | function changeToActive(tabnr)
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175 | {
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176 | for (i = 1; i <= this.nrTabs; ++i)
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177 | {
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178 | if (i == tabnr)
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179 | {
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180 | if (!this.isActive(i))
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181 | {
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182 | this.setActive(i);
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183 | }
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184 | }
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185 | else
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186 | {
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187 | if (this.isActive(i))
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188 | {
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189 | this.setInactive(i);
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190 | }
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191 | }
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192 | }
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193 | }
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194 |
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195 |
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196 | /**
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197 | * Determine active tab from url parameter or selector and display it.
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198 | */
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199 | function init()
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200 | {
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201 | var tab = 0;
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202 | var regexp = new RegExp('(^|&)' + this.tabPageKey + '=[0-9]{1,2}');
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203 | var urlparams = window.location.search;
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204 | var urlparamstart = urlparams.search(regexp);
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205 |
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206 | // getting the active tab from the tabPageKey (url/get-var) if set
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207 | if (this.tabPageKey && urlparamstart > -1)
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208 | {
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209 | urlparamstart = urlparamstart + ((urlparams[urlparamstart] == '&') ? 1 : 0);
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210 | var urlparam = urlparams.substr(urlparamstart,urlparams.length - urlparamstart);
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211 | var pos = urlparam.indexOf("&");
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212 | if (pos > -1)
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213 | {
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214 | urlparam = urlparam.substr(0,pos);
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215 | }
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216 | pos = urlparam.indexOf("=");
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217 | if (pos > -1)
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218 | {
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219 | var urlparamvalue = urlparam.substr(pos + 1,urlparam.length - (pos + 1));
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220 | tab = urlparamvalue;
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221 | }
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222 | }
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223 | else
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224 | {
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225 | // getting the active tab from the selector if set
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226 | // the check for != '' is needed for Konqueror
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227 | if(document.getElementById(this.HTMLtabselectorID) && this.HTMLtabselectorID != '')
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228 | tab = document.getElementById(this.HTMLtabselectorID).selectedIndex+1;
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229 | else
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230 | tab = 1;
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231 | }
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232 | if ((tab <= 0) || (tab > this.nrTabs))
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233 | {
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234 | tab = 1;
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235 | }
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236 | this.display(tab);
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237 | }
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238 | }
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