Bring back old explain view

Author: jonnyz32

src/views/results/index.ts

@@ -12,6 +12,7 @@ import { ExplainNode, ExplainTree } from "./explain/nodes";
 import { DoveResultsView, ExplainTreeItem } from "./explain/doveResultsView";
 import { DoveNodeView, PropertyNode } from "./explain/doveNodeView";
 import { ResultSetPanelProvider, SqlParameter } from "./resultSetPanelProvider";
+import { DoveTreeDecorationProvider } from "./explain/doveTreeDecorationProvider";	
 import { generateSqlForAdvisedIndexes } from "./explain/advice";
 import { updateStatusBar } from "../jobManager/statusBar";
 import { DbCache } from "../../language/providers/logic/cache";
@@ -57,6 +58,7 @@ let doveResultsView = new DoveResultsView();
 let doveResultsTreeView: TreeView<ExplainTreeItem> = doveResultsView.getTreeView();
 let doveNodeView = new DoveNodeView();
 let doveNodeTreeView: TreeView<PropertyNode> = doveNodeView.getTreeView();
+let doveTreeDecorationProvider = new DoveTreeDecorationProvider(); // Self-registers as a tree decoration providor
 
 export function initialise(context: vscode.ExtensionContext) {
   setCancelButtonVisibility(false);
@@ -408,6 +410,9 @@ async function runHandler(options?: StatementInfo) {
 
             explainTree = new ExplainTree(explained.vedata);
             const topLevel = explainTree.get();
+            const rootNode = doveResultsView.setRootNode(topLevel);	
+            doveNodeView.setNode(rootNode.explainNode);	            
+            doveTreeDecorationProvider.updateTreeItems(rootNode);
 
             const graph = new CytoscapeGraph();