Turn on negative edge weight support

script/features/algorithms/model/Algorithms.js

@@ -146,6 +146,12 @@ BaseAlgorithm.prototype.getCategory = function()
     return 0;
 }
 
+// Algorithm support negative edge weight
+BaseAlgorithm.prototype.IsSupportNegativeWeight = function()
+{
+    return false;
+}
+
 /**
  * Default handler.
  * Select using mouse, drag.

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

@@ -115,6 +115,11 @@ BFSAlgorithm.prototype.IsSupportMultiGraph = function()
     return true;
 }
 
+BFSAlgorithm.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
+
 // Factory for connected components.
 function CreateBFSAlgorithm(graph, app)
 {

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

@@ -375,6 +375,10 @@ Coloring.prototype.IsSupportMultiGraph = function()
     return true;
 }
 
+Coloring.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
 
 // Factory for connected components.
 function CreateColoring(graph, app)

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

@@ -119,6 +119,11 @@ FindConnectedComponentNew.prototype.IsSupportMultiGraph = function()
     return true;
 }
 
+FindConnectedComponentNew.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
+
 
 // Factory for connected components.
 function CreateConnectedComponetsNew(graph, app)

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

@@ -114,6 +114,11 @@ DFSAlgorithm.prototype.IsSupportMultiGraph = function()
     return true;
 }
 
+DFSAlgorithm.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
+
 // Factory for connected components.
 function CreateDFSAlgorithm(graph, app)
 {

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

@@ -87,6 +87,11 @@ FindEulerianLoop.prototype.getPriority = function()
     return -7.5;
 }
 
+FindEulerianLoop.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
+
 // Factory for connected components.
 function CreateFindEulerianLoop(graph, app)
 {

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

@@ -87,6 +87,11 @@ FindEulerianPath.prototype.getPriority = function()
     return -7.5;
 }
 
+FindEulerianPath.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
+
 // Factory for connected components.
 function CreateFindEulerianPath(graph, app)
 {

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

@@ -221,6 +221,10 @@ FindAllPathes.prototype.getPriority = function()
     return -9.4;
 }
 
+FindAllPathes.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
 
 // Factory for connected components.
 function CreateFindAllPathes(graph, app)

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

@@ -165,6 +165,11 @@ GraphReorder.prototype.IsSupportMultiGraph = function()
     return true;
 }
 
+GraphReorder.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
+
 // Factory for connected components.
 function CreateAlgorithmGraphReorder(graph, app)
 {

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

@@ -104,6 +104,11 @@ FindHamiltonianLoop.prototype.IsSupportMultiGraph = function()
     return true;
 }
 
+FindHamiltonianLoop.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
+
 // Factory for connected components.
 function CreateFindHamiltonianLoop(graph, app)
 {

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

@@ -102,6 +102,11 @@ FindHamiltonianPath.prototype.IsSupportMultiGraph = function()
     return true;
 }
 
+FindHamiltonianPath.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
+
 // Factory for connected components.
 function CreateFindHamiltonianPath(graph, app)
 {

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

@@ -289,6 +289,11 @@ IsomorphismCheck.prototype.messageWasChanged = function()
    }
 }
 
+IsomorphismCheck.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
+
 // Factory for connected components.
 function CreateIsomorphismCheck(graph, app)
 {

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

@@ -91,6 +91,11 @@ MaxClique.prototype.getPriority = function()
     return -5;
 }
 
+MaxClique.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
+
 function CreateMaxClique(graph, app)
 {
     return new MaxClique(graph, app)

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

@@ -188,6 +188,11 @@ ModernGraphStyle.prototype.IsSupportMultiGraph = function()
     return true;
 }
 
+ModernGraphStyle.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
+
 // Factory for connected components.
 function CreateAlgorithmModernGraphStyle(graph, app)
 {

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

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

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

@@ -92,6 +92,11 @@ VerticesDegree.prototype.IsSupportMultiGraph = function ()
     return true;
 }
 
+VerticesDegree.prototype.IsSupportNegativeWeight = function()
+{
+    return true;
+}
+
 // Factory for connected components.
 function CreateAlgorithmVerticesDegree(graph, app)
 {