Add List#indexOfRawIndex

src/data/List.js

@@ -502,6 +502,32 @@ define(function (require) {
         return -1;
     };
 
+    /**
+     * Retreive the index with given raw data index
+     * @param {number} idx
+     * @param {number} name
+     * @return {number}
+     */
+    listProto.indexOfRawIndex = function (rawIndex) {
+        // Indices are ascending
+        var indices = this.indices;
+        var left = 0;
+        var right = indices.length - 1;
+        while (left <= right) {
+            var mid = (left + right) / 2 | 0;
+            if (indices[mid] < rawIndex) {
+                left = mid + 1;
+            }
+            else if (indices[mid] > rawIndex) {
+                right = mid - 1;
+            }
+            else {
+                return mid;
+            }
+        }
+        return -1;
+    };
+
     /**
      * Retreive the index of nearest value
      * @param {string} dim

test/ut/spec/data/List.js

@@ -74,6 +74,32 @@ describe('List', function () {
             expect(list.getItemModel(1).option).toEqual([20, 25]);
         });
 
+        testCase('indexOfRawIndex', function (List) {
+            var list = new List(['x']);
+
+            list.initData([]);
+            expect(list.indexOfRawIndex(1)).toEqual(-1);
+
+            list.initData([0]);
+            expect(list.indexOfRawIndex(0)).toEqual(0);
+            expect(list.indexOfRawIndex(1)).toEqual(-1);
+
+            list.initData([0, 1, 2, 3]);
+            expect(list.indexOfRawIndex(1)).toEqual(1);
+            expect(list.indexOfRawIndex(2)).toEqual(2);
+            expect(list.indexOfRawIndex(5)).toEqual(-1);
+
+            list.initData([0, 1, 2, 3, 4]);
+            expect(list.indexOfRawIndex(2)).toEqual(2);
+            expect(list.indexOfRawIndex(3)).toEqual(3);
+            expect(list.indexOfRawIndex(5)).toEqual(-1);
+
+            list.filterSelf(function (idx) {
+                return idx >= 2;
+            });
+            expect(list.indexOfRawIndex(2)).toEqual(0);
+        });
+
         testCase('getDataExtent', function (List) {
             var list = new List(['x', 'y']);
             list.initData([1, 2, 3]);