forked from jupyterlab/jupyterlab
/
utils.ts
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/
utils.ts
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// Copyright (c) Jupyter Development Team.
// Distributed under the terms of the Modified BSD License.
import json2html = require('json-to-html');
import {
simulate
} from 'simulate-event';
import {
ServiceManager
} from '@jupyterlab/services';
import {
Widget
} from '@phosphor/widgets';
import {
ClientSession
} from '@jupyterlab/apputils';
import {
nbformat, uuid
} from '@jupyterlab/coreutils';
import {
TextModelFactory, DocumentRegistry, Context
} from '@jupyterlab/docregistry';
import {
INotebookModel, NotebookModelFactory
} from '@jupyterlab/notebook';
import {
RenderMime, TextRenderer, HTMLRenderer
} from '@jupyterlab/rendermime';
/**
* Get a copy of the default rendermime instance.
*/
export
function defaultRenderMime(): RenderMime {
return Private.rendermime.clone();
}
/**
* Create a client session object.
*/
export
function createClientSession(options: Partial<ClientSession.IOptions> = {}): Promise<ClientSession> {
let manager = options.manager || Private.manager.sessions;
return manager.ready.then(() => {
return new ClientSession({
manager,
path: options.path || uuid(),
name: options.name,
type: options.type,
kernelPreference: options.kernelPreference || {
shouldStart: true,
canStart: true,
name: manager.specs.default
}
});
});
}
/**
* Create a context for a file.
*/
export
function createFileContext(path?: string, manager?: ServiceManager.IManager): Context<DocumentRegistry.IModel> {
manager = manager || Private.manager;
let factory = Private.textFactory;
path = path || uuid() + '.txt';
return new Context({ manager, factory, path });
}
/**
* Create a context for a notebook.
*/
export
function createNotebookContext(path?: string, manager?: ServiceManager.IManager): Promise<Context<INotebookModel>> {
manager = manager || Private.manager;
return manager.ready.then(() => {
let factory = Private.notebookFactory;
path = path || uuid() + '.ipynb';
return new Context({
manager, factory, path, kernelPreference: { name: manager.specs.default }
});
});
}
/**
* Wait for a dialog to be attached to an element.
*/
export
function waitForDialog(host: HTMLElement = document.body): Promise<void> {
return new Promise<void>((resolve, reject) => {
let refresh = () => {
let node = host.getElementsByClassName('jp-Dialog')[0];
if (node) {
resolve(void 0);
return;
}
setTimeout(refresh, 10);
};
refresh();
});
}
/**
* Accept a dialog after it is attached by accepting the default button.
*/
export
function acceptDialog(host: HTMLElement = document.body): Promise<void> {
return waitForDialog(host).then(() => {
let node = host.getElementsByClassName('jp-Dialog')[0];
if (node) {
simulate(node as HTMLElement, 'keydown', { keyCode: 13 });
}
});
}
/**
* Dismiss a dialog after it is attached.
*/
export
function dismissDialog(host: HTMLElement = document.body): Promise<void> {
return waitForDialog(host).then(() => {
let node = host.getElementsByClassName('jp-Dialog')[0];
if (node) {
simulate(node as HTMLElement, 'keydown', { keyCode: 27 });
}
});
}
/**
* A namespace for private data.
*/
namespace Private {
export
const manager = new ServiceManager();
export
const textFactory = new TextModelFactory();
export
const notebookFactory = new NotebookModelFactory({});
class JSONRenderer extends HTMLRenderer {
mimeTypes = ['application/json'];
render(options: RenderMime.IRenderOptions): Widget {
let source = options.model.data.get(options.mimeType);
options.model.data.set(options.mimeType, json2html(source));
return super.render(options);
}
}
class InjectionRenderer extends TextRenderer {
mimeTypes = ['test/injector'];
render(options: RenderMime.IRenderOptions): Widget {
options.model.data.set('application/json', { 'foo': 1 } );
return super.render(options);
}
}
let renderers = [
new JSONRenderer(),
new InjectionRenderer()
];
let items = RenderMime.getDefaultItems();
for (let renderer of renderers) {
items.push({ mimeType: renderer.mimeTypes[0], renderer });
}
export
const rendermime = new RenderMime({ items });
}
/**
* The default outputs used for testing.
*/
export
const DEFAULT_OUTPUTS: nbformat.IOutput[] = [
{
name: 'stdout',
output_type: 'stream',
text: [
'hello world\n',
'0\n',
'1\n',
'2\n'
]
},
{
name: 'stderr',
output_type: 'stream',
text: [
'output to stderr\n'
]
},
{
name: 'stderr',
output_type: 'stream',
text: [
'output to stderr2\n'
]
},
{
output_type: 'execute_result',
execution_count: 1,
data: { 'text/plain': 'foo' },
metadata: {}
},
{
output_type: 'display_data',
data: { 'text/plain': 'hello, world' },
metadata: {}
},
{
output_type: 'error',
ename: 'foo',
evalue: 'bar',
traceback: ['fizz', 'buzz']
}
];