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index.ts
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// Copyright (c) Jupyter Development Team.
// Distributed under the terms of the Modified BSD License.
import { each, find } from '@phosphor/algorithm';
import { IDisposable } from '@phosphor/disposable';
import { Menu, Widget } from '@phosphor/widgets';
import {
ILabShell,
JupyterFrontEnd,
JupyterFrontEndPlugin,
IRouter
} from '@jupyterlab/application';
import { ICommandPalette, showDialog, Dialog } from '@jupyterlab/apputils';
import { PageConfig, URLExt } from '@jupyterlab/coreutils';
import { IInspector } from '@jupyterlab/inspector';
import {
IMainMenu,
IMenuExtender,
EditMenu,
FileMenu,
KernelMenu,
MainMenu,
RunMenu,
SettingsMenu,
ViewMenu,
TabsMenu
} from '@jupyterlab/mainmenu';
import { ServerConnection } from '@jupyterlab/services';
/**
* A namespace for command IDs of semantic extension points.
*/
export namespace CommandIDs {
export const openEdit = 'editmenu:open';
export const undo = 'editmenu:undo';
export const redo = 'editmenu:redo';
export const clearCurrent = 'editmenu:clear-current';
export const clearAll = 'editmenu:clear-all';
export const find = 'editmenu:find';
export const findAndReplace = 'editmenu:find-and-replace';
export const goToLine = 'editmenu:go-to-line';
export const openFile = 'filemenu:open';
export const closeAndCleanup = 'filemenu:close-and-cleanup';
export const createConsole = 'filemenu:create-console';
export const shutdown = 'filemenu:shutdown';
export const logout = 'filemenu:logout';
export const openKernel = 'kernelmenu:open';
export const interruptKernel = 'kernelmenu:interrupt';
export const restartKernel = 'kernelmenu:restart';
export const restartKernelAndClear = 'kernelmenu:restart-and-clear';
export const changeKernel = 'kernelmenu:change';
export const shutdownKernel = 'kernelmenu:shutdown';
export const shutdownAllKernels = 'kernelmenu:shutdownAll';
export const openView = 'viewmenu:open';
export const wordWrap = 'viewmenu:word-wrap';
export const lineNumbering = 'viewmenu:line-numbering';
export const matchBrackets = 'viewmenu:match-brackets';
export const openRun = 'runmenu:open';
export const run = 'runmenu:run';
export const runAll = 'runmenu:run-all';
export const restartAndRunAll = 'runmenu:restart-and-run-all';
export const runAbove = 'runmenu:run-above';
export const runBelow = 'runmenu:run-below';
export const openTabs = 'tabsmenu:open';
export const activateById = 'tabsmenu:activate-by-id';
export const activatePreviouslyUsedTab =
'tabsmenu:activate-previously-used-tab';
export const openSettings = 'settingsmenu:open';
export const openHelp = 'helpmenu:open';
export const openFirst = 'mainmenu:open-first';
}
/**
* A service providing an interface to the main menu.
*/
const plugin: JupyterFrontEndPlugin<IMainMenu> = {
id: '@jupyterlab/mainmenu-extension:plugin',
requires: [ICommandPalette, IRouter],
optional: [IInspector, ILabShell],
provides: IMainMenu,
activate: (
app: JupyterFrontEnd,
palette: ICommandPalette,
router: IRouter,
inspector: IInspector | null,
labShell: ILabShell | null
): IMainMenu => {
const { commands } = app;
let menu = new MainMenu(commands);
menu.id = 'jp-MainMenu';
let logo = new Widget();
logo.addClass('jp-MainAreaPortraitIcon');
logo.addClass('jp-JupyterIcon');
logo.id = 'jp-MainLogo';
// Only add quit button if the back-end supports it by checking page config.
let quitButton = PageConfig.getOption('quitButton');
menu.fileMenu.quitEntry = quitButton === 'True';
// Create the application menus.
createEditMenu(app, menu.editMenu);
createFileMenu(app, menu.fileMenu, router, inspector);
createKernelMenu(app, menu.kernelMenu);
createRunMenu(app, menu.runMenu);
createSettingsMenu(app, menu.settingsMenu);
createViewMenu(app, menu.viewMenu);
// The tabs menu relies on lab shell functionality.
if (labShell) {
createTabsMenu(app, menu.tabsMenu, labShell);
}
// Create commands to open the main application menus.
const activateMenu = (item: Menu) => {
menu.activeMenu = item;
menu.openActiveMenu();
};
commands.addCommand(CommandIDs.openEdit, {
label: 'Open Edit Menu',
execute: () => activateMenu(menu.editMenu.menu)
});
commands.addCommand(CommandIDs.openFile, {
label: 'Open File Menu',
execute: () => activateMenu(menu.fileMenu.menu)
});
commands.addCommand(CommandIDs.openKernel, {
label: 'Open Kernel Menu',
execute: () => activateMenu(menu.kernelMenu.menu)
});
commands.addCommand(CommandIDs.openRun, {
label: 'Open Run Menu',
execute: () => activateMenu(menu.runMenu.menu)
});
commands.addCommand(CommandIDs.openView, {
label: 'Open View Menu',
execute: () => activateMenu(menu.viewMenu.menu)
});
commands.addCommand(CommandIDs.openSettings, {
label: 'Open Settings Menu',
execute: () => activateMenu(menu.settingsMenu.menu)
});
commands.addCommand(CommandIDs.openTabs, {
label: 'Open Tabs Menu',
execute: () => activateMenu(menu.tabsMenu.menu)
});
commands.addCommand(CommandIDs.openHelp, {
label: 'Open Help Menu',
execute: () => activateMenu(menu.helpMenu.menu)
});
commands.addCommand(CommandIDs.openFirst, {
label: 'Open First Menu',
execute: () => {
menu.activeIndex = 0;
menu.openActiveMenu();
}
});
// Add some of the commands defined here to the command palette.
if (menu.fileMenu.quitEntry) {
palette.addItem({
command: CommandIDs.shutdown,
category: 'Main Area'
});
palette.addItem({
command: CommandIDs.logout,
category: 'Main Area'
});
}
palette.addItem({
command: CommandIDs.shutdownAllKernels,
category: 'Kernel Operations'
});
palette.addItem({
command: CommandIDs.activatePreviouslyUsedTab,
category: 'Main Area'
});
app.shell.add(logo, 'top');
app.shell.add(menu, 'top');
return menu;
}
};
/**
* Create the basic `Edit` menu.
*/
export function createEditMenu(app: JupyterFrontEnd, menu: EditMenu): void {
const commands = menu.menu.commands;
// Add the undo/redo commands the the Edit menu.
commands.addCommand(CommandIDs.undo, {
label: 'Undo',
isEnabled: Private.delegateEnabled(app, menu.undoers, 'undo'),
execute: Private.delegateExecute(app, menu.undoers, 'undo')
});
commands.addCommand(CommandIDs.redo, {
label: 'Redo',
isEnabled: Private.delegateEnabled(app, menu.undoers, 'redo'),
execute: Private.delegateExecute(app, menu.undoers, 'redo')
});
menu.addGroup(
[{ command: CommandIDs.undo }, { command: CommandIDs.redo }],
0
);
// Add the clear commands to the Edit menu.
commands.addCommand(CommandIDs.clearCurrent, {
label: () => {
const noun = Private.delegateLabel(app, menu.clearers, 'noun');
const enabled = Private.delegateEnabled(
app,
menu.clearers,
'clearCurrent'
)();
return `Clear${enabled ? ` ${noun}` : ''}`;
},
isEnabled: Private.delegateEnabled(app, menu.clearers, 'clearCurrent'),
execute: Private.delegateExecute(app, menu.clearers, 'clearCurrent')
});
commands.addCommand(CommandIDs.clearAll, {
label: () => {
const noun = Private.delegateLabel(app, menu.clearers, 'pluralNoun');
const enabled = Private.delegateEnabled(app, menu.clearers, 'clearAll')();
return `Clear All${enabled ? ` ${noun}` : ''}`;
},
isEnabled: Private.delegateEnabled(app, menu.clearers, 'clearAll'),
execute: Private.delegateExecute(app, menu.clearers, 'clearAll')
});
menu.addGroup(
[{ command: CommandIDs.clearCurrent }, { command: CommandIDs.clearAll }],
10
);
// Add the find-replace command to the Edit menu.
commands.addCommand(CommandIDs.findAndReplace, {
label: 'Find and Replace…',
isEnabled: Private.delegateEnabled(
app,
menu.findReplacers,
'findAndReplace'
),
execute: Private.delegateExecute(app, menu.findReplacers, 'findAndReplace')
});
menu.addGroup(
[{ command: CommandIDs.find }, { command: CommandIDs.findAndReplace }],
200
);
commands.addCommand(CommandIDs.goToLine, {
label: 'Go to Line…',
isEnabled: Private.delegateEnabled(app, menu.goToLiners, 'goToLine'),
execute: Private.delegateExecute(app, menu.goToLiners, 'goToLine')
});
menu.addGroup([{ command: CommandIDs.goToLine }], 200);
}
/**
* Create the basic `File` menu.
*/
export function createFileMenu(
app: JupyterFrontEnd,
menu: FileMenu,
router: IRouter,
inspector: IInspector | null
): void {
const commands = menu.menu.commands;
// Add a delegator command for closing and cleaning up an activity.
commands.addCommand(CommandIDs.closeAndCleanup, {
label: () => {
const action = Private.delegateLabel(
app,
menu.closeAndCleaners,
'action'
);
const name = Private.delegateLabel(app, menu.closeAndCleaners, 'name');
return `Close and ${action ? ` ${action} ${name}` : 'Shutdown'}`;
},
isEnabled: Private.delegateEnabled(
app,
menu.closeAndCleaners,
'closeAndCleanup'
),
execute: Private.delegateExecute(
app,
menu.closeAndCleaners,
'closeAndCleanup'
)
});
// Add a delegator command for creating a console for an activity.
commands.addCommand(CommandIDs.createConsole, {
label: () => {
const name = Private.delegateLabel(app, menu.consoleCreators, 'name');
const label = `New Console for ${name ? name : 'Activity'}`;
return label;
},
isEnabled: Private.delegateEnabled(
app,
menu.consoleCreators,
'createConsole'
),
execute: Private.delegateExecute(app, menu.consoleCreators, 'createConsole')
});
commands.addCommand(CommandIDs.shutdown, {
label: 'Shut Down',
caption: 'Shut down JupyterLab',
execute: () => {
return showDialog({
title: 'Shutdown confirmation',
body: 'Please confirm you want to shut down JupyterLab.',
buttons: [
Dialog.cancelButton(),
Dialog.warnButton({ label: 'Shut Down' })
]
}).then(result => {
if (result.button.accept) {
let setting = ServerConnection.makeSettings();
let apiURL = URLExt.join(setting.baseUrl, 'api/shutdown');
return ServerConnection.makeRequest(
apiURL,
{ method: 'POST' },
setting
)
.then(result => {
if (result.ok) {
// Close this window if the shutdown request has been successful
let body = document.createElement('div');
body.innerHTML = `<p>You have shut down the Jupyter server. You can now close this tab.</p>
<p>To use JupyterLab again, you will need to relaunch it.</p>`;
void showDialog({
title: 'Server stopped',
body: new Widget({ node: body }),
buttons: []
});
window.close();
} else {
throw new ServerConnection.ResponseError(result);
}
})
.catch(data => {
throw new ServerConnection.NetworkError(data);
});
}
});
}
});
commands.addCommand(CommandIDs.logout, {
label: 'Log Out',
caption: 'Log out of JupyterLab',
execute: () => {
router.navigate('/logout', { hard: true });
}
});
// Add the new group
const newGroup = [
{ type: 'submenu' as Menu.ItemType, submenu: menu.newMenu.menu },
{ command: 'filebrowser:create-main-launcher' }
];
const newViewGroup = [
{ command: 'docmanager:clone' },
{ command: CommandIDs.createConsole },
inspector ? { command: 'inspector:open' } : null,
{ command: 'docmanager:open-direct' }
].filter(item => !!item);
// Add the close group
const closeGroup = [
'application:close',
'filemenu:close-and-cleanup',
'application:close-all'
].map(command => {
return { command };
});
// Add save group.
const saveGroup = [
'docmanager:save',
'docmanager:save-as',
'docmanager:save-all'
].map(command => {
return { command };
});
// Add the re group.
const reGroup = [
'docmanager:reload',
'docmanager:restore-checkpoint',
'docmanager:rename'
].map(command => {
return { command };
});
// Add the quit group.
const quitGroup = [
{ command: 'filemenu:logout' },
{ command: 'filemenu:shutdown' }
];
menu.addGroup(newGroup, 0);
menu.addGroup(newViewGroup, 1);
menu.addGroup(closeGroup, 2);
menu.addGroup(saveGroup, 3);
menu.addGroup(reGroup, 4);
if (menu.quitEntry) {
menu.addGroup(quitGroup, 99);
}
}
/**
* Create the basic `Kernel` menu.
*/
export function createKernelMenu(app: JupyterFrontEnd, menu: KernelMenu): void {
const commands = menu.menu.commands;
commands.addCommand(CommandIDs.interruptKernel, {
label: 'Interrupt Kernel',
isEnabled: Private.delegateEnabled(
app,
menu.kernelUsers,
'interruptKernel'
),
execute: Private.delegateExecute(app, menu.kernelUsers, 'interruptKernel')
});
commands.addCommand(CommandIDs.restartKernel, {
label: 'Restart Kernel…',
isEnabled: Private.delegateEnabled(app, menu.kernelUsers, 'restartKernel'),
execute: Private.delegateExecute(app, menu.kernelUsers, 'restartKernel')
});
commands.addCommand(CommandIDs.restartKernelAndClear, {
label: () => {
const noun = Private.delegateLabel(app, menu.kernelUsers, 'noun');
const enabled = Private.delegateEnabled(
app,
menu.kernelUsers,
'restartKernelAndClear'
)();
return `Restart Kernel and Clear${enabled ? ` ${noun}` : ''}…`;
},
isEnabled: Private.delegateEnabled(
app,
menu.kernelUsers,
'restartKernelAndClear'
),
execute: Private.delegateExecute(
app,
menu.kernelUsers,
'restartKernelAndClear'
)
});
commands.addCommand(CommandIDs.changeKernel, {
label: 'Change Kernel…',
isEnabled: Private.delegateEnabled(app, menu.kernelUsers, 'changeKernel'),
execute: Private.delegateExecute(app, menu.kernelUsers, 'changeKernel')
});
commands.addCommand(CommandIDs.shutdownKernel, {
label: 'Shut Down Kernel',
isEnabled: Private.delegateEnabled(app, menu.kernelUsers, 'shutdownKernel'),
execute: Private.delegateExecute(app, menu.kernelUsers, 'shutdownKernel')
});
commands.addCommand(CommandIDs.shutdownAllKernels, {
label: 'Shut Down All Kernels…',
isEnabled: () => {
return app.serviceManager.sessions.running().next() !== undefined;
},
execute: () => {
return showDialog({
title: 'Shut Down All?',
body: 'Shut down all kernels?',
buttons: [
Dialog.cancelButton(),
Dialog.warnButton({ label: 'SHUT DOWN ALL' })
]
}).then(result => {
if (result.button.accept) {
return app.serviceManager.sessions.shutdownAll();
}
});
}
});
const restartGroup = [
CommandIDs.restartKernel,
CommandIDs.restartKernelAndClear,
CommandIDs.restartAndRunAll
].map(command => {
return { command };
});
menu.addGroup([{ command: CommandIDs.interruptKernel }], 0);
menu.addGroup(restartGroup, 1);
menu.addGroup(
[
{ command: CommandIDs.shutdownKernel },
{ command: CommandIDs.shutdownAllKernels }
],
2
);
menu.addGroup([{ command: CommandIDs.changeKernel }], 3);
}
/**
* Create the basic `View` menu.
*/
export function createViewMenu(app: JupyterFrontEnd, menu: ViewMenu): void {
const commands = menu.menu.commands;
commands.addCommand(CommandIDs.lineNumbering, {
label: 'Show Line Numbers',
isEnabled: Private.delegateEnabled(
app,
menu.editorViewers,
'toggleLineNumbers'
),
isToggled: Private.delegateToggled(
app,
menu.editorViewers,
'lineNumbersToggled'
),
execute: Private.delegateExecute(
app,
menu.editorViewers,
'toggleLineNumbers'
)
});
commands.addCommand(CommandIDs.matchBrackets, {
label: 'Match Brackets',
isEnabled: Private.delegateEnabled(
app,
menu.editorViewers,
'toggleMatchBrackets'
),
isToggled: Private.delegateToggled(
app,
menu.editorViewers,
'matchBracketsToggled'
),
execute: Private.delegateExecute(
app,
menu.editorViewers,
'toggleMatchBrackets'
)
});
commands.addCommand(CommandIDs.wordWrap, {
label: 'Wrap Words',
isEnabled: Private.delegateEnabled(
app,
menu.editorViewers,
'toggleWordWrap'
),
isToggled: Private.delegateToggled(
app,
menu.editorViewers,
'wordWrapToggled'
),
execute: Private.delegateExecute(app, menu.editorViewers, 'toggleWordWrap')
});
menu.addGroup(
[
{ command: 'application:toggle-left-area' },
{ command: 'application:toggle-right-area' }
],
0
);
const editorViewerGroup = [
CommandIDs.lineNumbering,
CommandIDs.matchBrackets,
CommandIDs.wordWrap
].map(command => {
return { command };
});
menu.addGroup(editorViewerGroup, 10);
// Add the command for toggling single-document mode.
menu.addGroup(
[
{ command: 'application:toggle-presentation-mode' },
{ command: 'application:toggle-mode' }
],
1000
);
}
/**
* Create the basic `Run` menu.
*/
export function createRunMenu(app: JupyterFrontEnd, menu: RunMenu): void {
const commands = menu.menu.commands;
commands.addCommand(CommandIDs.run, {
label: () => {
const noun = Private.delegateLabel(app, menu.codeRunners, 'noun');
const enabled = Private.delegateEnabled(app, menu.codeRunners, 'run')();
return `Run Selected${enabled ? ` ${noun}` : ''}`;
},
isEnabled: Private.delegateEnabled(app, menu.codeRunners, 'run'),
execute: Private.delegateExecute(app, menu.codeRunners, 'run')
});
commands.addCommand(CommandIDs.runAll, {
label: () => {
const noun = Private.delegateLabel(app, menu.codeRunners, 'noun');
const enabled = Private.delegateEnabled(
app,
menu.codeRunners,
'runAll'
)();
return `Run All${enabled ? ` ${noun}` : ''}`;
},
isEnabled: Private.delegateEnabled(app, menu.codeRunners, 'runAll'),
execute: Private.delegateExecute(app, menu.codeRunners, 'runAll')
});
commands.addCommand(CommandIDs.restartAndRunAll, {
label: () => {
const noun = Private.delegateLabel(app, menu.codeRunners, 'noun');
const enabled = Private.delegateEnabled(
app,
menu.codeRunners,
'restartAndRunAll'
)();
return `Restart Kernel and Run All${enabled ? ` ${noun}` : ''}…`;
},
isEnabled: Private.delegateEnabled(
app,
menu.codeRunners,
'restartAndRunAll'
),
execute: Private.delegateExecute(app, menu.codeRunners, 'restartAndRunAll')
});
const runAllGroup = [CommandIDs.runAll, CommandIDs.restartAndRunAll].map(
command => {
return { command };
}
);
menu.addGroup([{ command: CommandIDs.run }], 0);
menu.addGroup(runAllGroup, 999);
}
/**
* Create the basic `Settings` menu.
*/
export function createSettingsMenu(
_: JupyterFrontEnd,
menu: SettingsMenu
): void {
menu.addGroup([{ command: 'settingeditor:open' }], 1000);
}
/**
* Create the basic `Tabs` menu.
*/
export function createTabsMenu(
app: JupyterFrontEnd,
menu: TabsMenu,
labShell: ILabShell | null
): void {
const commands = app.commands;
// Add commands for cycling the active tabs.
menu.addGroup(
[
{ command: 'application:activate-next-tab' },
{ command: 'application:activate-previous-tab' },
{ command: CommandIDs.activatePreviouslyUsedTab }
],
0
);
// A list of the active tabs in the main area.
const tabGroup: Menu.IItemOptions[] = [];
// A disposable for getting rid of the out-of-date tabs list.
let disposable: IDisposable;
// Command to activate a widget by id.
commands.addCommand(CommandIDs.activateById, {
label: args => {
const id = args['id'] || '';
const widget = find(app.shell.widgets('main'), w => w.id === id);
return (widget && widget.title.label) || '';
},
isToggled: args => {
const id = args['id'] || '';
return app.shell.currentWidget && app.shell.currentWidget.id === id;
},
execute: args => app.shell.activateById((args['id'] as string) || '')
});
let previousId = '';
// Command to toggle between the current
// tab and the last modified tab.
commands.addCommand(CommandIDs.activatePreviouslyUsedTab, {
label: 'Activate Previously Used Tab',
isEnabled: () => !!previousId,
execute: () => commands.execute(CommandIDs.activateById, { id: previousId })
});
if (labShell) {
void app.restored.then(() => {
// Iterate over the current widgets in the
// main area, and add them to the tab group
// of the menu.
const populateTabs = () => {
// remove the previous tab list
if (disposable && !disposable.isDisposed) {
disposable.dispose();
}
tabGroup.length = 0;
let isPreviouslyUsedTabAttached = false;
each(app.shell.widgets('main'), widget => {
if (widget.id === previousId) {
isPreviouslyUsedTabAttached = true;
}
tabGroup.push({
command: CommandIDs.activateById,
args: { id: widget.id }
});
});
disposable = menu.addGroup(tabGroup, 1);
previousId = isPreviouslyUsedTabAttached ? previousId : '';
};
populateTabs();
labShell.layoutModified.connect(() => {
populateTabs();
});
// Update the ID of the previous active tab if a new tab is selected.
labShell.currentChanged.connect((_, args) => {
let widget = args.oldValue;
if (!widget) {
return;
}
previousId = widget.id;
});
});
}
}
export default plugin;
/**
* A namespace for Private data.
*/
namespace Private {
/**
* Return the first value of the iterable that satisfies the predicate
* function.
*/
function find<T>(
it: Iterable<T>,
predicate: (value: T) => boolean
): T | undefined {
for (let value of it) {
if (predicate(value)) {
return value;
}
}
return undefined;
}
/**
* A utility function that delegates a portion of a label to an IMenuExtender.
*/
export function delegateLabel<E extends IMenuExtender<Widget>>(
app: JupyterFrontEnd,
s: Set<E>,
label: keyof E
): string {
let widget = app.shell.currentWidget;
const extender = find(s, value => value.tracker.has(widget));
if (!extender) {
return '';
}
// Coerce the result to be a string. When Typedoc is updated to use
// Typescript 2.8, we can possibly use conditional types to get Typescript
// to recognize this is a string.
return (extender[label] as any) as string;
}
/**
* A utility function that delegates command execution
* to an IMenuExtender.
*/
export function delegateExecute<E extends IMenuExtender<Widget>>(
app: JupyterFrontEnd,
s: Set<E>,
executor: keyof E
): () => Promise<any> {
return () => {
let widget = app.shell.currentWidget;
const extender = find(s, value => value.tracker.has(widget));
if (!extender) {
return Promise.resolve(void 0);
}
// Coerce the result to be a function. When Typedoc is updated to use
// Typescript 2.8, we can possibly use conditional types to get Typescript
// to recognize this is a function.
let f = (extender[executor] as any) as (w: Widget) => Promise<any>;
return f(widget);
};
}
/**
* A utility function that delegates whether a command is enabled
* to an IMenuExtender.
*/
export function delegateEnabled<E extends IMenuExtender<Widget>>(
app: JupyterFrontEnd,
s: Set<E>,
executor: keyof E
): () => boolean {
return () => {
let widget = app.shell.currentWidget;
const extender = find(s, value => value.tracker.has(widget));
return (
!!extender &&
!!extender[executor] &&
(extender.isEnabled ? extender.isEnabled(widget) : true)
);
};
}
/**
* A utility function that delegates whether a command is toggled
* for an IMenuExtender.
*/
export function delegateToggled<E extends IMenuExtender<Widget>>(
app: JupyterFrontEnd,
s: Set<E>,
toggled: keyof E
): () => boolean {
return () => {
let widget = app.shell.currentWidget;
const extender = find(s, value => value.tracker.has(widget));
// Coerce extender[toggled] to be a function. When Typedoc is updated to use
// Typescript 2.8, we can possibly use conditional types to get Typescript
// to recognize this is a function.
return (
!!extender &&
!!extender[toggled] &&
!!((extender[toggled] as any) as (w: Widget) => () => boolean)(widget)
);
};
}
}