remove elements from filteredItems as well

js/isotope.js

@@ -40,6 +40,48 @@ var getText = docElem.textContent ?
     return elem.innerText;
   };
 
+var objToString = Object.prototype.toString;
+function isArray( obj ) {
+  return objToString.call( obj ) === '[object Array]';
+}
+
+// index of helper cause IE8
+var indexOf = Array.prototype.indexOf ? function( ary, obj ) {
+    return ary.indexOf( obj );
+  } : function( ary, obj ) {
+    for ( var i=0, len = ary.length; i < len; i++ ) {
+      if ( ary[i] === obj ) {
+        return i;
+      }
+    }
+    return -1;
+  };
+
+// turn element or nodeList into an array
+function makeArray( obj ) {
+  var ary = [];
+  if ( isArray( obj ) ) {
+    // use object if already an array
+    ary = obj;
+  } else if ( obj && typeof obj.length === 'number' ) {
+    // convert nodeList to array
+    for ( var i=0, len = obj.length; i < len; i++ ) {
+      ary.push( obj[i] );
+    }
+  } else {
+    // array of single index
+    ary.push( obj );
+  }
+  return ary;
+}
+
+function removeFrom( obj, ary ) {
+  var index = indexOf( ary, obj );
+  if ( index !== -1 ) {
+    ary.splice( index, 1 );
+  }
+}
+
 // -------------------------- isotopeDefinition -------------------------- //
 
 // used for AMD definition and requires
@@ -144,7 +186,7 @@ function isotopeDefinition( Outlayer, getSize, matchesSelector, Item, LayoutMode
     // set any options pass
     this.option( opts );
     this._getIsInstant();
-    // where the magic happens, amirite
+    // filter, sort, and layout
     this.filteredItems = this._filter( this.items );
     this._sort();
     this._layout();
@@ -412,6 +454,26 @@ function isotopeDefinition( Outlayer, getSize, matchesSelector, Item, LayoutMode
     this._mode().resize();
   };
 
+  // -------------------------- remove -------------------------- //
+
+  var _remove = Isotope.prototype.remove;
+  Isotope.prototype.remove = function( elems ) {
+    elems = makeArray( elems );
+    var removeItems = this.getItems( elems );
+    // do regular thing
+    _remove.call( this, elems );
+    // bail if no items to remove
+    if ( !removeItems || !removeItems.length ) {
+      return;
+    }
+    // remove elems from filteredItems
+    for ( var i=0, len = removeItems.length; i < len; i++ ) {
+      var item = removeItems[i];
+      // remove item from collection
+      removeFrom( item, this.filteredItems );
+    }
+  };
+
   // -----  ----- //
 
   return Isotope;