lib/overlib/overlib_crossframe.js

   1 //\/////
   2 //\  overLIB Crossframe Support Plugin
   3 //\  This file requires overLIB 4.10 or later.
   4 //\
   5 //\  overLIB 4.05 - You may not remove or change this notice.
   6 //\  Copyright Erik Bosrup 1998-2004. 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 //\mini
  12
  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 Cross Frame Support Plugin.');
  18 else {
  19 registerCommands('frame');
  20
  21
  22 ////////
  23 //  PLUGIN FUNCTIONS
  24 ///////
  25
  26 // Parses FRAME command
  27 function parseFrameExtras(pf,i,ar) {
  28         var k = i,v;
  29
  30         if (k < ar.length) {
  31                 if (ar[k] == FRAME) { v = ar[++k]; if(pf == 'ol_') ol_frame = v; else opt_FRAME(v); return k; }
  32         }
  33
  34         return -1;
  35 }
  36
  37 ////////
  38 // SUPPORT FUNCTIONS
  39 ////////
  40
  41 // Defines which frame we should point to.
  42 function opt_FRAME(frm) {
  43         o3_frame = frm;
  44         over = createDivContainer('overDiv');
  45         return 0;
  46 }
  47
  48 // Get frame depth of nested frames
  49 function frmDepth(thisFrame,ofrm) {
  50         var retVal = '';
  51
  52         for (var i = 0; i<thisFrame.length; i++) {
  53                 if (thisFrame[i].length > 0) {
  54                         retVal = frmDepth(thisFrame[i],ofrm);
  55                         if (retVal ==  '') continue;
  56                 } else if (thisFrame[i] != ofrm) continue;
  57                 retVal = '[' + i + ']' + retVal;
  58                 break;
  59         }
  60
  61         return retVal;
  62 }
  63
  64 // Gets frame reference value relative to top frame
  65 function getFrmRef(srcFrm,tgetFrm) {
  66         var rtnVal = ''
  67
  68         if (tgetFrm != srcFrm) {
  69                 var tFrm = frmDepth(top.frames,tgetFrm)
  70                 var sFrm = frmDepth(top.frames,srcFrm)
  71                 if (sFrm.length ==  tFrm.length) {
  72                         l = tFrm.lastIndexOf('[')
  73
  74                         if (l) {
  75                                 while ( sFrm.substring(0,l) != tFrm.substring(0,l) )
  76                                 l = tFrm.lastIndexOf('[',l-1)
  77                                 tFrm = tFrm.substr(l)
  78                                 sFrm = sFrm.substr(l)
  79                         }
  80                 }
  81
  82                 var cnt = 0, p = '',str = tFrm
  83                 while ((k = str.lastIndexOf('[')) != -1) {
  84                         cnt++
  85                         str = str.substring(0,k)
  86                 }
  87
  88                 for (var i = 0; i<cnt; i++) p = p + 'parent.'
  89                 rtnVal = p + 'frames' + sFrm + '.'
  90         }
  91
  92         return rtnVal
  93 }
  94
  95 function chkForFrmRef() {
  96         if(o3_frame != ol_frame) fnRef = getFrmRef(ol_frame,o3_frame)
  97         return true;
  98 }
  99
 100 ////////
 101 // PLUGIN REGISTRATIONS
 102 ////////
 103 registerCmdLineFunction(parseFrameExtras);
 104 registerPostParseFunction(chkForFrmRef);
 105 }