Support negative weight for edges.

script/features/algorithms/model/plugins/FindLongestPath.js

@@ -218,6 +218,10 @@ FindLongestPath.prototype.getPriority = function()
     return -9.4;
 }
 
+FindLongestPath.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
 
 // Factory for connected components.
 function CreateFindLongestPath(graph, app)

script/features/algorithms/model/plugins/FindShortPatchsFromOne.js

@@ -209,6 +209,11 @@ FindShortPatchsFromOne.prototype.IsSupportMultiGraph = function()
     return true;
 }
 
+FindShortPatchsFromOne.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
+
 // Factory for connected components.
 function CreateFindShortPatchsFromOne(graph, app)
 {

script/features/algorithms/model/plugins/MaxClique.js

@@ -96,6 +96,11 @@ MaxClique.prototype.IsSupportNegativeWeight = function()
     return true;
 }
 
+MaxClique.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
+
 function CreateMaxClique(graph, app)
 {
     return new MaxClique(graph, app)

script/features/algorithms/model/plugins/MaxFlow.js

@@ -188,13 +188,13 @@ FindMaxFlow.prototype.getPriority = function()
 }
 
 // @return true, if you change resotry graph after use.
-BaseAlgorithm.prototype.wantRestore = function()
+FindMaxFlow.prototype.wantRestore = function()
 {
     return true;
 }
 
 // calls this method if wantRestore return true.
-BaseAlgorithm.prototype.restore = function()
+FindMaxFlow.prototype.restore = function()
 {
     if (this.selectedEdges != null)
     {
@@ -216,6 +216,11 @@ BaseAlgorithm.prototype.restore = function()
     }
 }
 
+FindMaxFlow.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
+
 
 // Factory for connected components.
 function CreateFindMaxFlow(graph, app)

script/features/algorithms/model/plugins/MinimumSpanningTree.js

@@ -155,6 +155,10 @@ MinimumSpanningTree.prototype.IsSupportMultiGraph = function ()
     return true;
 }
 
+MinimumSpanningTree.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
 
 // Factory for algorithm.
 function CreateMinimumSpanningTree(graph, app)

script/features/algorithms/model/plugins/ShortestPath.js

@@ -221,6 +221,11 @@ FindShortPathNew.prototype.IsSupportMultiGraph = function ()
     return true;
 }
 
+FindShortPathNew.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
+
 
 // Factory for connected components.
 function CreateFindShortPathNew(graph, app)