lib/overlib/overlib_centerpopup.js

   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 //   $Revision$                $Date$
  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 }