Allow configuration of wrappers for the inputs

README

@@ -3,5 +3,8 @@ jquery.tristate.js is a jquery plugin for adding "tristate" indeterminate functi
 To use it, simply call it on your parent list:
 $('ul.tristate').tristate();
 
+By default, the inputs must be direct descendants of the list elements. You may optionally pass in an array of wrappers that represents the tree of elements the inputs are nested within, e.g.:
+$('ul.tristate').tristate({wrappers:['span.classname','label']});
+
 Example available here:
-http://jlbruno.github.com/jQuery-Tristate-Checkbox-plugin/
+http://jlbruno.github.com/jQuery-Tristate-Checkbox-plugin/

jquery.tristate.js

@@ -19,73 +19,81 @@
  **********************************************************************************/
 
 (function($){
-	$.fn.tristate = function(options){
-
-		var config = {
-			selector: $(this).selector,
-			checked: null,
-			container: null,
-			siblings: null
-		};
-		var opts = $.extend(config, options);
-
-		return this.each(function(){
-			var obj = $(this);
-
-			var triState = function() {
-
-				var pub = {};
-
-				pub.init = function(){
-					$('input[type="checkbox"]', obj).change(function(e) {
-						config.checked = $(this).prop("checked");
-						config.container = $(this).parent();
-						config.siblings = config.container.siblings();
+  $.fn.tristate = function(options){
 
-						config.container.find('input[type="checkbox"]').prop({
-							indeterminate: false,
-							checked: config.checked
-						});
-
-						pub.checkSiblings(config.container);
-					});
-					// run checkSiblings for every checked checkbox when the page loads
-					$('input[type=checkbox]:checked', obj).trigger('change');
-				};
-
-				pub.checkSiblings = function(el) {
-					var parent = el.parent().parent();
-					var all = true;
+    var config = {
+      selector: $(this).selector,
+      checked: null,
+      container: null,
+      siblings: null,
+      wrappers: []
+    };
+    var opts = $.extend(config, options);
 
-					el.siblings().each(function() {
-						return all = ($(this).children('input[type="checkbox"]').prop("checked") === config.checked);
-					});
+    return this.each(function(){
+      var obj = $(this);
 
-					if (all && config.checked) {
-						parent.children('input[type="checkbox"]').prop({
-							indeterminate: false,
-							checked: config.checked
-						});
-						pub.checkSiblings(parent);
-					} else if (all && !config.checked) {
-						parent.children('input[type="checkbox"]').prop("checked", config.checked);
-						parent.children('input[type="checkbox"]').prop("indeterminate", (parent.find('input[type="checkbox"]:checked').length > 0));
-						pub.checkSiblings(parent);
-					} else {
-						el.parents("li").children('input[type="checkbox"]').prop({
-							indeterminate: true,
-							checked: false
-						});
-					}
-				};
-
-				return pub;
-			}();
-
-			triState.init();
-			triState.checkSiblings(obj);
-
-		});
-	};
-})(jQuery);
+      var triState = function() {
+
+        var pub = {};
+
+        pub.init = function(){
+          $('input[type="checkbox"]', obj).change(function(e) {
+            config.checked = $(this).prop("checked");
+            config.container = $(this).closest('li');
+            config.siblings = config.container.siblings();
+
+            config.container.find('input[type="checkbox"]').prop({
+              indeterminate: false,
+              checked: config.checked
+            });
+
+            pub.checkSiblings(config.container);
+          });
+          // run checkSiblings for every checked checkbox when the page loads
+          $('input[type=checkbox]:checked', obj).trigger('change');
+        };
+
+        pub.checkSiblings = function(el) {
+          var parent = el.parent().parent();
+          var all = true;
 
+          var childInputs = function(elem) {
+            var ths = elem;
+            $.each(config.wrappers, function(ind, wrap) {
+              ths = ths.children(wrap);
+            });
+            return ths.children('input[type="checkbox"]');
+          }
+
+          el.siblings().each(function() {
+            return all = (childInputs($(this)).prop("checked") === config.checked);
+          });
+
+          if (all && config.checked) {
+            childInputs(parent).prop({
+              indeterminate: false,
+              checked: config.checked
+            });
+            pub.checkSiblings(parent);
+          } else if (all && !config.checked) {
+            childInputs(parent).prop("checked", config.checked);
+            childInputs(parent).prop("indeterminate", (parent.find('input[type="checkbox"]:checked').length > 0));
+            pub.checkSiblings(parent);
+          } else {
+            childInputs(el.parents("li")).prop({
+              indeterminate: true,
+              checked: false
+            });
+          }
+        };
+
+        return pub;
+      }();
+
+      triState.init();
+      triState.checkSiblings(obj);
+
+    });
+  };
+})(jQuery);