本文整理汇总了TypeScript中@jupyterlab/apputils.StateDB类的典型用法代码示例。如果您正苦于以下问题：TypeScript StateDB类的具体用法？TypeScript StateDB怎么用？TypeScript StateDB使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了StateDB类的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: it
it('should restore the widgets in a tracker', done => {
let tracker = new InstanceTracker<Widget>({
namespace: 'foo-widget',
shell: new ApplicationShell()
});
let registry = new CommandRegistry();
let state = new StateDB({ namespace: NAMESPACE });
let ready = new PromiseDelegate<void>();
let restorer = new LayoutRestorer({
first: ready.promise, registry, state
});
let called = false;
let key = `${tracker.namespace}:${tracker.namespace}`;
registry.addCommand(tracker.namespace, {
execute: () => { called = true; }
});
state.save(key, { data: null }).then(() => {
return restorer.restore(tracker, {
args: () => null,
name: () => tracker.namespace,
command: tracker.namespace
});
}).catch(done);
ready.resolve(void 0);
restorer.restored.then(() => { expect(called).to.be(true); })
.then(() => state.remove(key))
.then(() => { done(); })
.catch(done);
});示例2: it
it('should enforce the maximum length of a stored item', done => {
let db = new StateDB({ namespace: 'test' });
let key = 'test-key';
let data = { a: (new Array<string>(db.maxLength)).join('A') };
db.save(key, data)
.then(() => { done('maxLength promise should have rejected'); })
.catch(() => { done(); });
});示例3: StateDB
activate: (app: JupyterLab) => {
let state = new StateDB({ namespace: app.info.namespace });
let version = app.info.version;
let key = 'statedb:version';
let fetch = state.fetch(key);
let save = () => state.save(key, { version });
let reset = () => state.clear().then(save);
let check = (value: JSONObject) => {
let old = value && value['version'];
if (!old || old !== version) {
console.log(`Upgraded: ${old || 'unknown'} to ${version}; Resetting DB.`);
return reset();
}
};
app.commands.addCommand(CommandIDs.clearStateDB, {
label: 'Clear Application Restore State',
execute: () => state.clear()
});
return fetch.then(check, reset).then(() => state);
}示例4: describe
describe('filebrowser/model', () => {
let manager: IDocumentManager;
let serviceManager: ServiceManager.IManager;
let registry: IDocumentRegistry;
let model: FileBrowserModel;
let name: string;
let state: StateDB;
before(() => {
let opener: DocumentManager.IWidgetOpener = {
open: widget => { /* no op */ }
};
registry = new DocumentRegistry();
serviceManager = new ServiceManager();
manager = new DocumentManager({
registry, opener,
manager: serviceManager
});
state = new StateDB({ namespace: 'filebrowser/model' });
});
beforeEach(() => {
state.clear();
model = new FileBrowserModel({ manager, state });
return manager.newUntitled({ type: 'file' }).then(contents => {
name = contents.name;
return model.cd();
});
});
afterEach(() => {
model.dispose();
});
describe('FileBrowserModel', () => {
describe('#constructor()', () => {
it('should construct a new file browser model', () => {
model = new FileBrowserModel({ manager });
expect(model).to.be.a(FileBrowserModel);
});
});
describe('#pathChanged', () => {
it('should be emitted when the path changes', (done) => {
model.pathChanged.connect((sender, args) => {
expect(sender).to.be(model);
expect(args.name).to.be('path');
expect(args.oldValue).to.be('');
expect(args.newValue).to.be('src');
done();
});
model.cd('src').catch(done);
});
});
describe('#refreshed', () => {
it('should be emitted after a refresh', (done) => {
model.refreshed.connect((sender, arg) => {
expect(sender).to.be(model);
expect(arg).to.be(void 0);
done();
});
model.cd().catch(done);
});
it('should be emitted when the path changes', (done) => {
model.refreshed.connect((sender, arg) => {
expect(sender).to.be(model);
expect(arg).to.be(void 0);
done();
});
model.cd('src').catch(done);
});
});
describe('#fileChanged', () => {
it('should be emitted when a file is created', (done) => {
model.fileChanged.connect((sender, args) => {
expect(sender).to.be(model);
expect(args.type).to.be('new');
expect(args.oldValue).to.be(null);
expect(args.newValue.type).to.be('file');
done();
});
manager.newUntitled({ type: 'file' }).catch(done);
});
it('should be emitted when a file is renamed', (done) => {
model.fileChanged.connect((sender, args) => {
expect(sender).to.be(model);
//.........这里部分代码省略.........
示例5: beforeEach
beforeEach(() => {
state.clear();
model = new FileBrowserModel({ manager, state });
return manager.newUntitled({ type: 'file' }).then(contents => {
name = contents.name;
return model.cd();
});
});