fix: Cannot show description page (#345)

Author: jdneo

src/commands/show.ts

@@ -20,17 +20,15 @@ import { leetCodeSolutionProvider } from "../webview/leetCodeSolutionProvider";
 import * as list from "./list";
 
 export async function previewProblem(input: IProblem | vscode.Uri, isSideMode: boolean = false): Promise<void> {
-    let node: LeetCodeNode;
-    if (input instanceof LeetCodeNode) {
-        node = input;
-    } else if (input instanceof vscode.Uri) {
+    let node: IProblem;
+    if (input instanceof vscode.Uri) {
         const activeFilePath: string = input.fsPath;
         const id: string = await getNodeIdFromFile(activeFilePath);
         if (!id) {
             vscode.window.showErrorMessage(`Failed to resolve the problem id from file: ${activeFilePath}.`);
             return;
         }
-        const cachedNode: LeetCodeNode | undefined = explorerNodeManager.getNodeById(id);
+        const cachedNode: IProblem | undefined = explorerNodeManager.getNodeById(id);
         if (!cachedNode) {
             vscode.window.showErrorMessage(`Failed to resolve the problem with id: ${id}.`);
             return;
@@ -39,8 +37,7 @@ export async function previewProblem(input: IProblem | vscode.Uri, isSideMode: b
         // Move the preview page aside if it's triggered from Code Lens
         isSideMode = true;
     } else {
-        vscode.window.showErrorMessage("Invalid input to fetch the preview data.");
-        return;
+        node = input;
     }
 
     const descString: string = await leetCodeExecutor.getDescription(node.id);

src/webview/leetCodePreviewProvider.ts

@@ -22,9 +22,11 @@ class LeetCodePreviewProvider extends LeetCodeWebview {
         this.node = node;
         this.sideMode = isSideMode;
         this.showWebviewInternal();
-        if (this.sideMode) {
-            this.hideSideBar(); // For better view area
-        }
+        // Comment out this operation since it sometimes may cause the webview become empty.
+        // Waiting for the progress of the VS Code side issue: https://github.com/microsoft/vscode/issues/3742
+        // if (this.sideMode) {
+        //     this.hideSideBar(); // For better view area
+        // }
     }
 
     protected getWebviewOption(): ILeetCodeWebviewOption {
@@ -134,10 +136,10 @@ class LeetCodePreviewProvider extends LeetCodeWebview {
         }
     }
 
-    private async hideSideBar(): Promise<void> {
-        await commands.executeCommand("workbench.action.focusSideBar");
-        await commands.executeCommand("workbench.action.toggleSidebarVisibility");
-    }
+    // private async hideSideBar(): Promise<void> {
+    //     await commands.executeCommand("workbench.action.focusSideBar");
+    //     await commands.executeCommand("workbench.action.toggleSidebarVisibility");
+    // }
 
     private parseDescription(descString: string, problem: IProblem): IDescription {
         const [