GraphViewer: CommunityNodes now tell about the reason why they are joined if they know it

html/admin/js/graphViewer/graph/abstractAdapter.js

@@ -309,7 +309,7 @@ function AbstractAdapter(nodes, edges, descendant, config) {
       }
     },
     
-    collapseCommunity = function (community) {
+    collapseCommunity = function (community, reason) {
       if (!community || community.length === 0) {
         return;
       }
@@ -324,6 +324,9 @@ function AbstractAdapter(nodes, edges, descendant, config) {
       commNode.x = nodesToRemove[0].x;
       commNode.y = nodesToRemove[0].y;
       commNode._size = community.length;
+      if (reason) {
+        commNode._reason = reason;
+      }
       cachedCommunities[commId] = {};
       cachedCommunities[commId].nodes = nodesToRemove;
       cachedCommunities[commId].edges = [];
@@ -421,7 +424,7 @@ function AbstractAdapter(nodes, edges, descendant, config) {
             var ids = _.map(b.nodes, function(n) {
               return n._id;
             });
-            collapseCommunity(ids);
+            collapseCommunity(ids, b.reason);
           }
         });
       }

html/admin/js/graphViewer/jasmine_test/specAdapter/abstractAdapterSpec.js

@@ -1707,6 +1707,68 @@
         existNodes(["1", "2"]);
       });
       
+      it('should display the reason why a community has been joined', function() {
+        var n1, n2, n3, n4, n5,
+        com1, com2,
+        inserted = [],
+        limit = 3;
+        spyOn(mockReducer, "bucketNodes").andCallFake(function() {
+          return [
+            {
+              reason: {
+                type: "similar",
+                example: n1
+              },
+              nodes: [n1, n2]
+            },
+            {
+              reason: {
+                key: "type",
+                value: "example"
+              },
+              nodes: [n3, n4, n5]
+            }
+          ];
+        });
+        adapter.setChildLimit(limit);
+        n1 = adapter.insertNode({_id: "1" });
+        n2 = adapter.insertNode({_id: "2" });
+        n3 = adapter.insertNode({_id: "3" });
+        n4 = adapter.insertNode({_id: "4" });
+        n5 = adapter.insertNode({_id: "5" });
+        _.each(nodes, function(n) {
+          inserted.push(n);
+        });
+        adapter.checkSizeOfInserted(inserted);
+        
+        expect(mockReducer.bucketNodes).wasCalledWith(inserted, limit);
+        
+        expect(nodes.length).toEqual(2);
+        expect(getCommunityNodes().length).toEqual(2);
+        notExistNodes(["1", "2", "3", "4", "5"]);
+        
+        _.each(getCommunityNodes(), function(c) {
+          if (c._size === 2) {
+            com1 = c;
+            return;
+          }
+          if (c._size === 3) {
+            com2 = c;
+            return;
+          }
+          // Should never be reached
+          expect(true).toBeFalsy();
+        });
+        
+        expect(com1._reason).toEqual({
+          type: "similar",
+          example: n1
+        });
+        expect(com2._reason).toEqual({
+          key: "type",
+          value: "example"
+        });
+      });
     });
     
   });