Add Click the tree explorer should open the topic (#132)

src/explorer/LeetCodeNode.ts

@@ -1,6 +1,7 @@
 // Copyright (c) jdneo. All rights reserved.
 // Licensed under the MIT license.
 
+import { Command } from "vscode";
 import { IProblem, ProblemState } from "../shared";
 
 export class LeetCodeNode {
@@ -48,4 +49,12 @@ export class LeetCodeNode {
     public get parentName(): string {
         return this.parentNodeName;
     }
+
+    public get selectedCommand(): Command {
+        return {
+            title: "Open Problem",
+            command: "leetcode.showProblem",
+            arguments: [this],
+        };
+    }
 }

src/explorer/LeetCodeTreeDataProvider.ts

@@ -52,6 +52,7 @@ export class LeetCodeTreeDataProvider implements vscode.TreeDataProvider<LeetCod
             collapsibleState: element.isProblem ? vscode.TreeItemCollapsibleState.None : vscode.TreeItemCollapsibleState.Collapsed,
             contextValue: element.isProblem ? "problem" : element.id.toLowerCase(),
             iconPath: this.parseIconPathFromProblemState(element),
+            command: element.isProblem ? element.selectedCommand : undefined,
         };
     }