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   1  /**
   2   * Horde Form Sorter Field Javascript Class
   3   *
   4   * Provides the javascript class to accompany the Horde_Form sorter
   5   * field.
   6   *
   7   * $Horde: horde/js/sorter.js,v 1.2.10.3 2006/01/01 21:29:02 jan Exp $
   8   *
   9   * Copyright 2003-2006 Marko Djukic <marko@oblo.com>
  10   *
  11   * See the enclosed file COPYING for license information (LGPL).  If you
  12   * did not receive this file, see http://www.fsf.org/copyleft/lgpl.html.
  13   */
  14  
  15  function Horde_Form_Sorter(instanceName, varName, header)
  16  {
  17      /* Set up this class instance for function calls from the page. */
  18      this._instanceName = instanceName;
  19  
  20      this._varName = varName;
  21  
  22      /* Sorter variables. */
  23      this._header = '';
  24      this.minLength = 0;
  25      if (header != '') {
  26          this._header = header;
  27          this.minLength = 1;
  28      }
  29      this.sorterList = document.getElementById(this._varName + '[list]');
  30      this.sorterArray = document.getElementById(this._varName + '[array]');
  31  
  32      this.deselectHeader = function()
  33      {
  34          if (this._header != '') {
  35              this.sorterList[0].selected = false;
  36          }
  37      }
  38  
  39      this.setHidden = function()
  40      {
  41          var tmpArray = new Array();
  42  
  43          for (var i = this.minLength; i < this.sorterList.length; i++) {
  44              if (this.sorterList[i].value) {
  45                  tmpArray[i - this.minLength] = this.sorterList[i].value;
  46              }
  47          }
  48  
  49          this.sorterArray.value = tmpArray.join("\t");
  50      }
  51  
  52      this.moveColumnUp = function()
  53      {
  54          var sel = this.sorterList.selectedIndex;
  55  
  56          if (sel <= this.minLength || this.sorterList.length <= this.minLength + 1) return;
  57  
  58          /* Deselect everything but the first selected item. */
  59          this.sorterList.selectedIndex = sel;
  60          var up = this.sorterList[sel].value;
  61  
  62          tmp = new Array();
  63          for (i = this.minLength; i < this.sorterList.length; i++) {
  64              tmp[i - this.minLength] = new Option(this.sorterList[i].text, this.sorterList[i].value)
  65          }
  66  
  67          for (i = 0; i < tmp.length; i++) {
  68              if (i + this.minLength == sel - 1) {
  69                  this.sorterList[i + this.minLength] = tmp[i + 1];
  70              } else if (i + this.minLength == sel) {
  71                  this.sorterList[i + this.minLength] = tmp[i - 1];
  72              } else {
  73                  this.sorterList[i + this.minLength] = tmp[i];
  74              }
  75          }
  76  
  77          this.sorterList.selectedIndex = sel - 1;
  78  
  79          this.setHidden();
  80      }
  81  
  82      this.moveColumnDown = function()
  83      {
  84          var sel = this.sorterList.selectedIndex;
  85  
  86          if (sel == -1 || sel == this.sorterList.length - 1) return;
  87  
  88          /* Deselect everything but the first selected item. */
  89          this.sorterList.selectedIndex = sel;
  90          var down = this.sorterList[sel].value;
  91  
  92          tmp = new Array();
  93          for (i = this.minLength; i < this.sorterList.length; i++) {
  94              tmp[i - this.minLength] = new Option(this.sorterList[i].text, this.sorterList[i].value)
  95          }
  96  
  97          for (i = 0; i < tmp.length; i++) {
  98              if (i + this.minLength == sel) {
  99                  this.sorterList[i + this.minLength] = tmp[i + 1];
 100              } else if (i + this.minLength == sel + 1) {
 101                  this.sorterList[i + this.minLength] = tmp[i - 1];
 102              } else {
 103                  this.sorterList[i + this.minLength] = tmp[i];
 104              }
 105          }
 106  
 107          this.sorterList.selectedIndex = sel + 1;
 108  
 109          this.setHidden();
 110      }
 111  }