fix unresponsive script warnings in Gecko browsers from checkbox shift-click setup

diff --git a/skins/common/wikibits.js b/skins/common/wikibits.js
index dedf30a..93b1838 100644 (file)
--- a/skins/common/wikibits.js
+++ b/skins/common/wikibits.js
@@ -502,7 +502,10 @@ function setupCheckboxShiftClick() {
        }
 }
 
-function addCheckboxClickHandlers(ul) {
+function addCheckboxClickHandlers(ul, start, finish) {
+       if (ul.checkboxHandlersTimer) {
+               clearInterval(ul.checkboxHandlersTimer);
+       }
        if ( !ul.childNodes ) {
                return;
        }
@@ -510,21 +513,28 @@ function addCheckboxClickHandlers(ul) {
        if (len < 2) {
                return;
        }
-       ul.checkboxes = [];
-       ul.lastCheckbox = null;
-       for (var i = 0; i<len; ++i) {
+       start = start || 0;
+       finish = finish || start + 250;
+       if ( finish > len ) { finish = len; }
+       ul.checkboxes = ul.checkboxes || [];
+       ul.lastCheckbox = ul.lastCheckbox || null;
+       for (var i = start; i<finish; ++i) {
                var child = ul.childNodes[i];
                if ( child && child.childNodes && child.childNodes[0] ) {
                        var cb = child.childNodes[0];
                        if ( !cb.nodeName || cb.nodeName.toLowerCase() != 'input' ||
                             !cb.type || cb.type.toLowerCase() != 'checkbox' ) {
-                               continue;
+                               return;
                        }
                        cb.index = ul.checkboxes.push(cb) - 1;
                        cb.container = ul;
                        cb.onmouseup = checkboxMouseupHandler;
                }
        }
+       if (finish < len) {
+         var f=function(){ addCheckboxClickHandlers(ul, finish, finish+250); };
+         ul.checkboxHandlersTimer=setInterval(f, 200);
+       }
 }
 
 function checkboxMouseupHandler(e) {