Add cancellation from query history view

And tweak the commands visible from the view.

Author: aeisenberg

extensions/ql-vscode/package.json

@@ -494,6 +494,10 @@
         "command": "codeQLQueryHistory.showQueryLog",
         "title": "Show Query Log"
       },
+      {
+        "command": "codeQLQueryHistory.cancel",
+        "title": "Cancel"
+      },
       {
         "command": "codeQLQueryHistory.showQueryText",
         "title": "Show Query Text"
@@ -662,7 +666,7 @@
         {
           "command": "codeQLQueryHistory.removeHistoryItem",
           "group": "9_qlCommands",
-          "when": "view == codeQLQueryHistory"
+          "when": "view == codeQLQueryHistory && viewItem != inProgressResultsItem"
         },
         {
           "command": "codeQLQueryHistory.setLabel",
@@ -672,12 +676,12 @@
         {
           "command": "codeQLQueryHistory.compareWith",
           "group": "9_qlCommands",
-          "when": "view == codeQLQueryHistory"
+          "when": "view == codeQLQueryHistory && (viewItem == rawResultsItem || viewItem == interpretedResultsItem)"
         },
         {
           "command": "codeQLQueryHistory.showQueryLog",
           "group": "9_qlCommands",
-          "when": "view == codeQLQueryHistory"
+          "when": "view == codeQLQueryHistory && (viewItem == rawResultsItem || viewItem == interpretedResultsItem)"
         },
         {
           "command": "codeQLQueryHistory.showQueryText",
@@ -687,7 +691,7 @@
         {
           "command": "codeQLQueryHistory.viewCsvResults",
           "group": "9_qlCommands",
-          "when": "view == codeQLQueryHistory && viewItem != interpretedResultsItem"
+          "when": "view == codeQLQueryHistory && viewItem == rawResultsItem"
         },
         {
           "command": "codeQLQueryHistory.viewCsvAlerts",
@@ -702,12 +706,12 @@
         {
           "command": "codeQLQueryHistory.viewDil",
           "group": "9_qlCommands",
-          "when": "view == codeQLQueryHistory"
+          "when": "view == codeQLQueryHistory && (viewItem == rawResultsItem || viewItem == interpretedResultsItem)"
         },
         {
-          "command": "codeQL.previewQueryHelp",
+          "command": "codeQLQueryHistory.cancel",
           "group": "9_qlCommands",
-          "when": "view == codeQLQueryHistory && resourceScheme == .qhelp && isWorkspaceTrusted"
+          "when": "view == codeQLQueryHistory && viewItem == inProgressResultsItem"
         },
         {
           "command": "codeQLTests.showOutputDifferences",
@@ -860,6 +864,10 @@
           "command": "codeQLQueryHistory.showQueryLog",
           "when": "false"
         },
+        {
+          "command": "codeQLQueryHistory.cancel",
+          "when": "false"
+        },
         {
           "command": "codeQLQueryHistory.showQueryText",
           "when": "false"

extensions/ql-vscode/src/extension.ts

@@ -1,5 +1,6 @@
 import {
   CancellationToken,
+  CancellationTokenSource,
   commands,
   Disposable,
   ExtensionContext,
@@ -496,8 +497,12 @@ async function activateWithInstalledDistribution(
         databaseUri: databaseItem.databaseUri.toString(),
       };
 
+      // handle cancellation from the history view.
+      const source = new CancellationTokenSource();
+      token.onCancellationRequested(() => source.cancel());
+
       const initialInfo = await createInitialQueryInfo(selectedQuery, databaseInfo, quickEval, range);
-      const item = new FullQueryInfo(initialInfo, queryHistoryConfigurationListener);
+      const item = new FullQueryInfo(initialInfo, queryHistoryConfigurationListener, source);
       qhm.addQuery(item);
       try {
         const completedQueryInfo = await compileAndRunQueryAgainstDatabase(
@@ -506,7 +511,7 @@ async function activateWithInstalledDistribution(
           databaseItem,
           initialInfo,
           progress,
-          token,
+          source.token,
         );
         item.completeThisQuery(completedQueryInfo);
         await showResultsForCompletedQuery(item as FullCompletedQueryInfo, WebviewReveal.NotForced);
@@ -517,6 +522,7 @@ async function activateWithInstalledDistribution(
         throw e;
       } finally {
         qhm.refreshTreeView();
+        source.dispose();
       }
     }
   }

extensions/ql-vscode/src/query-history.ts

@@ -119,24 +119,24 @@ export class HistoryTreeDataProvider extends DisposableObject {
       arguments: [element],
     };
 
-    // Mark this query history item according to whether it has a
-    // SARIF file so that we can make context menu items conditionally
-    // available.
-    const hasResults = await element.completedQuery?.query.hasInterpretedResults();
-    treeItem.contextValue = hasResults
-      ? 'interpretedResultsItem'
-      : 'rawResultsItem';
-
+    // Populate the icon and the context value. We use the context value to
+    // control which commands are visible in the context menu.
+    let hasResults;
     switch (element.status) {
       case QueryStatus.InProgress:
-        // TODO this is not a good icon.
         treeItem.iconPath = new ThemeIcon('sync~spin');
+        treeItem.contextValue = 'inProgressResultsItem';
         break;
       case QueryStatus.Completed:
+        hasResults = await element.completedQuery?.query.hasInterpretedResults();
         treeItem.iconPath = this.localSuccessIconPath;
+        treeItem.contextValue = hasResults
+          ? 'interpretedResultsItem'
+          : 'rawResultsItem';
         break;
       case QueryStatus.Failed:
         treeItem.iconPath = this.failedIconPath;
+        treeItem.contextValue = 'cancelledResultsItem';
         break;
       default:
         assertNever(element.status);
@@ -332,6 +332,12 @@ export class QueryHistoryManager extends DisposableObject {
         this.handleShowQueryLog.bind(this)
       )
     );
+    this.push(
+      commandRunner(
+        'codeQLQueryHistory.cancel',
+        this.handleCancel.bind(this)
+      )
+    );
     this.push(
       commandRunner(
         'codeQLQueryHistory.showQueryText',
@@ -439,7 +445,7 @@ export class QueryHistoryManager extends DisposableObject {
     const { finalSingleItem, finalMultiSelect } = this.determineSelection(singleItem, multiSelect);
 
     (finalMultiSelect || [finalSingleItem]).forEach((item) => {
-      // TODO: Removing in progress queries is not supported yet
+      // Removing in progress queries is not supported yet
       if (item.status !== QueryStatus.InProgress) {
         this.treeDataProvider.remove(item);
         item.completedQuery?.dispose();
@@ -568,6 +574,19 @@ export class QueryHistoryManager extends DisposableObject {
     }
   }
 
+  async handleCancel(
+    singleItem: FullQueryInfo,
+    multiSelect: FullQueryInfo[]
+  ) {
+    const { finalSingleItem, finalMultiSelect } = this.determineSelection(singleItem, multiSelect);
+
+    (finalMultiSelect || [finalSingleItem]).forEach((item) => {
+      if (item.status === QueryStatus.InProgress) {
+        item.cancel();
+      }
+    });
+  }
+
   async handleShowQueryText(
     singleItem: FullQueryInfo,
     multiSelect: FullQueryInfo[]

extensions/ql-vscode/src/query-results.ts

@@ -1,4 +1,4 @@
-import { env } from 'vscode';
+import { CancellationTokenSource, env } from 'vscode';
 
 import { QueryWithResults, tmpDir, QueryEvaluationInfo } from './run-queries';
 import * as messages from './pure/messages';
@@ -180,10 +180,15 @@ export class FullQueryInfo {
   constructor(
     public readonly initialInfo: InitialQueryInfo,
     private readonly config: QueryHistoryConfig,
+    private readonly source: CancellationTokenSource
   ) {
     /**/
   }
 
+  cancel() {
+    this.source.cancel();
+  }
+
   get startTime() {
     return this.initialInfo.start.toLocaleString(env.language);
   }

extensions/ql-vscode/src/run-queries.ts

@@ -689,7 +689,8 @@ let queryId = 0;
 export async function createInitialQueryInfo(
   selectedQueryUri: Uri | undefined,
   databaseInfo: DatabaseInfo,
-  isQuickEval: boolean, range?: Range
+  isQuickEval: boolean,
+  range?: Range
 ): Promise<InitialQueryInfo> {
   // Determine which query to run, based on the selection and the active editor.
   const { queryPath, quickEvalPosition, quickEvalText } = await determineSelectedQuery(selectedQueryUri, isQuickEval, range);

extensions/ql-vscode/src/vscode-tests/no-workspace/query-history.test.ts

@@ -515,7 +515,8 @@ describe('query-history', () => {
         start: new Date(),
         queryPath: 'hucairz'
       } as InitialQueryInfo,
-      configListener
+      configListener,
+      {} as vscode.CancellationTokenSource
     );
 
     if (queryWitbResults) {