add context menu on commits in the HistorySidebar with add tag command

src/commandsAndMenu.tsx

@@ -24,6 +24,7 @@ import { ContextMenu, DockPanel, Menu, Panel, Widget } from '@lumino/widgets';
 import * as React from 'react';
 import { CancelledError } from './cancelledError';
 import { BranchPicker } from './components/BranchPicker';
+import { NewTagDialogBox } from './components/NewTagDialog';
 import { DiffModel } from './components/diff/model';
 import { createPlainTextDiff } from './components/diff/PlainTextDiff';
 import { PreviewMainAreaWidget } from './components/diff/PreviewMainAreaWidget';
@@ -39,7 +40,8 @@ import {
   gitIcon,
   historyIcon,
   openIcon,
-  removeIcon
+  removeIcon,
+  tagIcon
 } from './style/icons';
 import {
   CommandIDs,
@@ -102,6 +104,9 @@ export namespace CommandArguments {
   export interface IGitContextAction {
     files: Git.IStatusFile[];
   }
+  export interface IGitCommitInfo {
+    commit: Git.ISingleCommitInfo;
+  }
 }
 
 function pluralizedContextLabel(singular: string, plural: string) {
@@ -1537,6 +1542,80 @@ export function addCommands(
     isEnabled: () => false,
     execute: () => void 0
   });
+
+  commands.addCommand(ContextCommandIDs.gitTagAdd, {
+    label: trans.__('Add Tag'),
+    caption: trans.__('Add tag pointing to selected commit'),
+    execute: async args => {
+      const commit = args as any as CommandArguments.IGitCommitInfo;
+
+      const widgetId = 'git-dialog-AddTag';
+      let anchor = document.querySelector<HTMLDivElement>(`#${widgetId}`);
+      if (!anchor) {
+        anchor = document.createElement('div');
+        anchor.id = widgetId;
+        document.body.appendChild(anchor);
+      }
+
+      const tagDialog = true;
+      const isSingleCommit = true;
+
+      const waitForDialog = new PromiseDelegate<string | null>();
+      const dialog = ReactWidget.create(
+        <NewTagDialogBox
+          pastCommits={[commit.commit]}
+          logger={logger}
+          model={gitModel}
+          trans={trans}
+          open={tagDialog}
+          onClose={(tagName?: string) => {
+            // () => {
+            dialog.dispose();
+            waitForDialog.resolve(tagName ?? null);
+          }}
+          isSingleCommit={isSingleCommit}
+        />
+      );
+
+      Widget.attach(dialog, anchor);
+
+      const tagName = await waitForDialog.promise;
+
+      if (tagName) {
+        logger.log({
+          level: Level.RUNNING,
+          message: trans.__(
+            "Create tag pointing to '%1'...",
+            commit.commit.commit_msg
+          )
+        });
+        try {
+          await gitModel.setTag(tagName, commit.commit.commit);
+        } catch (err) {
+          logger.log({
+            level: Level.ERROR,
+            message: trans.__(
+              "Failed to create tag '%1' poining to '%2'.",
+              tagName,
+              commit
+            ),
+            error: err as Error
+          });
+          return;
+        }
+
+        logger.log({
+          level: Level.SUCCESS,
+          message: trans.__(
+            "Created tag '%1' pointing to '%2'.",
+            tagName,
+            commit
+          )
+        });
+      }
+    },
+    icon: tagIcon.bindprops({ stylesheet: 'menuItem' })
+  });
 }
 
 /**
@@ -1639,6 +1718,21 @@ export function addMenuItems(
   });
 }
 
+export function addHistoryMenuItems(
+  commands: ContextCommandIDs[],
+  contextMenu: Menu,
+  selectedCommit: Git.ISingleCommitInfo
+): void {
+  commands.forEach(command => {
+    contextMenu.addItem({
+      command,
+      args: {
+        commit: selectedCommit
+      } as CommandArguments.IGitCommitInfo as any
+    });
+  });
+}
+
 /**
  * Populate Git context submenu depending on the selected files.
  */

src/components/HistorySideBar.tsx

@@ -1,6 +1,8 @@
 import { TranslationBundle } from '@jupyterlab/translation';
 import { closeIcon } from '@jupyterlab/ui-components';
 import { CommandRegistry } from '@lumino/commands';
+import { Menu } from '@lumino/widgets';
+import { addHistoryMenuItems } from '../commandsAndMenu';
 import * as React from 'react';
 import { GitExtension } from '../model';
 import { hiddenButtonStyle } from '../style/ActionButtonStyle';
@@ -10,7 +12,7 @@ import {
   selectedHistoryFileStyle,
   historySideBarWrapperStyle
 } from '../style/HistorySideBarStyle';
-import { Git } from '../tokens';
+import { ContextCommandIDs, Git } from '../tokens';
 import { openFileDiff } from '../utils';
 import { ActionButton } from './ActionButton';
 import { FileItem } from './FileItem';
@@ -79,6 +81,8 @@ export interface IHistorySideBarProps {
   ) => (event: React.MouseEvent<HTMLElement, MouseEvent>) => Promise<void>;
 }
 
+export const CONTEXT_COMMANDS = [ContextCommandIDs.gitTagAdd];
+
 /**
  * Returns a React component for displaying commit history.
  *
@@ -145,6 +149,25 @@ export const HistorySideBar: React.FunctionComponent<IHistorySideBarProps> = (
     return () => resizeObserver.disconnect();
   }, [props.commits]);
 
+  /**
+   * Open the context menu on the advanced view
+   *
+   * @param selectedCommit The commit on which the context menu is opened
+   * @param event The click event
+   */
+  const openContextMenu = (
+    selectedCommit: Git.ISingleCommitInfo,
+    event: React.MouseEvent
+  ): void => {
+    event.preventDefault();
+
+    const contextMenu = new Menu({ commands: props.commands });
+    const commands = [ContextCommandIDs.gitTagAdd];
+    addHistoryMenuItems(commands, contextMenu, selectedCommit);
+
+    contextMenu.open(event.clientX, event.clientY);
+  };
+
   return (
     <div className={historySideBarWrapperStyle}>
       {!props.model.selectedHistoryFile && (
@@ -232,6 +255,7 @@ export const HistorySideBar: React.FunctionComponent<IHistorySideBarProps> = (
                     }
                   })
                 }
+                contextMenu={openContextMenu}
               >
                 {!props.model.selectedHistoryFile && (
                   <SinglePastCommitInfo

src/components/NewTagDialog.tsx

@@ -46,7 +46,7 @@ export interface INewTagDialogProps {
   pastCommits: Git.ISingleCommitInfo[];
 
   /**
-   * Extension logger
+   * Extension logger.
    */
   logger: Logger;
 
@@ -69,6 +69,11 @@ export interface INewTagDialogProps {
    * The application language translator.
    */
   trans: TranslationBundle;
+
+  /**
+   * Dialog box open from the context menu?
+   */
+  isSingleCommit: boolean;
 }
 
 /**
@@ -109,6 +114,11 @@ export interface IDialogBoxCommitGraphProps {
    * Update function for baseCommitId.
    */
   updateBaseCommitId: React.Dispatch<React.SetStateAction<string>>;
+
+  /**
+   * Dialog box open from the context menu.
+   */
+  isSingleCommit: boolean;
 }
 
 /**
@@ -185,6 +195,10 @@ export const DialogBoxCommitGraph: React.FunctionComponent<
     isFilter = true;
   }
 
+  if (props.isSingleCommit === true) {
+    isFilter = false;
+  }
+
   return (
     <div className={historyDialogBoxWrapperStyle}>
       {isFilter && (
@@ -457,6 +471,7 @@ export const NewTagDialogBox: React.FunctionComponent<INewTagDialogProps> = (
             filter={filterState}
             baseCommitId={baseCommitIdState}
             updateBaseCommitId={setBaseCommitIdState}
+            isSingleCommit={props.isSingleCommit}
           />
         }
       </div>

src/components/PastCommitNode.tsx

@@ -118,6 +118,14 @@ export interface IPastCommitNodeProps {
    * @param el the <li> element representing a past commit
    */
   setRef: (el: HTMLLIElement) => void;
+
+  /**
+   * Callback to open a context menu on the commit
+   */
+  contextMenu?: (
+    commit: Git.ISingleCommitInfo,
+    event: React.MouseEvent
+  ) => void;
 }
 
 /**
@@ -162,6 +170,12 @@ export class PastCommitNode extends React.Component<
             : this.props.trans.__('View file changes')
         }
         onClick={event => this._onCommitClick(event, this.props.commit.commit)}
+        onContextMenu={
+          this.props.contextMenu &&
+          (event => {
+            this.props.contextMenu(this.props.commit, event);
+          })
+        }
       >
         <div className={commitHeaderClass}>
           <span className={commitHeaderItemClass}>

src/components/TagMenu.tsx

@@ -265,6 +265,7 @@ export class TagMenu extends React.Component<ITagMenuProps, ITagMenuState> {
    * @returns React element
    */
   private _renderNewTagDialog(): React.ReactElement {
+    const isSingleCommit = false;
     return (
       <NewTagDialogBox
         pastCommits={this.props.pastCommits}
@@ -273,6 +274,7 @@ export class TagMenu extends React.Component<ITagMenuProps, ITagMenuState> {
         trans={this.props.trans}
         open={this.state.tagDialog}
         onClose={this._onNewTagDialogClose}
+        isSingleCommit={isSingleCommit}
       />
     );
   }

src/tokens.ts

@@ -1373,7 +1373,8 @@ export enum ContextCommandIDs {
   gitIgnoreExtension = 'git:context-ignoreExtension',
   gitNoAction = 'git:no-action',
   openFileFromDiff = 'git:open-file-from-diff',
-  gitFileStashPop = 'git:context-stash-pop'
+  gitFileStashPop = 'git:context-stash-pop',
+  gitTagAdd = 'git:context-tag-add'
 }
 
 /**