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   1  //\/////
   2  //\  overLIB Center Popup Plugin
   3  //\  This file requires overLIB 4.10 or later.
   4  //\
   5  //\  overLIB 4.10 - You may not remove or change this notice.
   6  //\  Copyright Erik Bosrup 1998-2003. All rights reserved.
   7  //\  Contributors are listed on the homepage.
   8  //\  See http://www.bosrup.com/web/overlib/ for details.
   9  //   $Revision: 3729 $                $Date: 2006-07-10 09:55:43 -0700 (Mon, 10 Jul 2006) $
  10  //
  11  //\/////
  12  //\mini
  13  ////////
  14  // PRE-INIT
  15  // Ignore these lines, configuration is below.
  16  ////////
  17  if (typeof olInfo == 'undefined' || typeof olInfo.meets == 'undefined' || !olInfo.meets(4.10)) alert('overLIB 4.10 or later is required for the Center Popup Plugin.');
  18  else {
  19  registerCommands('centerpopup,centeroffset');
  20  ////////
  21  // DEFAULT CONFIGURATION
  22  // You don't have to change anything here if you don't want to. All of this can be
  23  // changed on your html page or through an overLIB call.
  24  ////////
  25  // Default value for centerpopup is to not center the popup
  26  if (typeof ol_centerpopup == 'undefined') var ol_centerpopup = 0;
  27  if (typeof ol_centeroffset == 'undefined') var ol_centeroffset = '0';
  28  ////////
  29  // END OF CONFIGURATION
  30  // Don't change anything below this line, all configuration is above.
  31  ////////
  32  ////////
  33  // INIT
  34  ////////
  35  // Runtime variables init. Don't change for config!
  36  var o3_centerpopup = 0;
  37  var o3_centeroffset = '0';
  38  ////////
  39  // PLUGIN FUNCTIONS
  40  ////////
  41  function setCenterPopupVariables() {
  42      o3_centerpopup = ol_centerpopup;
  43      o3_centeroffset = ol_centeroffset;
  44  }
  45  // Parses Shadow and Scroll commands
  46  function parseCenterPopupExtras(pf,i,ar) {
  47      var k = i,v;
  48  
  49      if (k < ar.length) {
  50          if (ar[k] == CENTERPOPUP) { eval(pf + 'centerpopup = (' + pf + 'centerpopup == 0) ? 1 : 0'); return k; }
  51          if (ar[k] == CENTEROFFSET) { k = opt_MULTIPLEARGS(++k,ar,(pf + 'centeroffset')); return k; }
  52      }
  53  
  54      return -1;
  55  }
  56  // Function which positions popup in Center of screen
  57  function centerPopupHorizontal(browserWidth, horizontalScrollAmount, widthFix) {
  58      if (!o3_centerpopup) return void(0);
  59  
  60      var vdisp = o3_centeroffset.split(',');
  61      var placeX, iwidth = browserWidth, winoffset = horizontalScrollAmount;
  62    var pWd = parseInt(o3_width);
  63  
  64      placeX = winoffset + Math.round((iwidth - widthFix - pWd)/2) + parseInt(vdisp[0]);
  65      if(typeof o3_followscroll != 'undefined' && o3_followscroll && o3_sticky) o3_relx = placeX;
  66  
  67      return placeX;
  68  }
  69  function centerPopupVertical(browserHeight,verticalScrollAmount) {
  70      if (!o3_centerpopup) return void(0);
  71  
  72      var placeY, iheight = browserHeight, scrolloffset = verticalScrollAmount;
  73      var vdisp = o3_centeroffset.split(',');
  74      var pHeight = (o3_aboveheight ? parseInt(o3_aboveheight) : (olNs4 ? over.clip.height : over.offsetHeight));
  75  
  76      placeY = scrolloffset + Math.round((iheight - pHeight)/2) + (vdisp.length > 1 ? parseInt(vdisp[1]) : 0);
  77      if(typeof o3_followscroll != 'undefined' && o3_followscroll && o3_sticky) o3_rely = placeY;
  78  
  79      return placeY;
  80  }
  81  ////////
  82  // PLUGIN REGISTRATIONS
  83  ////////
  84  registerRunTimeFunction(setCenterPopupVariables);
  85  registerCmdLineFunction(parseCenterPopupExtras);
  86  registerHook('horizontalPlacement',centerPopupHorizontal,FCHAIN);
  87  registerHook('verticalPlacement', centerPopupVertical, FCHAIN);
  88  if(olInfo.meets(4.10)) registerNoParameterCommands('centerpopup');
  89  }