gristlabs_grist-core/app/client/models/gristUrlState.ts

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/**
* This module provides a urlState() function returning a singleton UrlState, which represents
* Grist application state as encoded into a URL, and navigation functions.
*
* For example, the current org is available as a value or as an observable:
*
* urlState().state.get().org
* computed((use) => use(urlState().state).org);
*
* Creating a link which has an href but changes state without reloading page is possible with:
*
* dom('a', urlState().setLinkUrl({ws: 10}), "...")
*
* Grist URLs have the form:
* <org-base>/
* <org-base>/ws/<ws>/
* <org-base>/doc/<doc>[/p/<docPage>]
*
* where <org-base> depends on whether subdomains are in use, i.e. one of:
* <org>.getgrist.com
* localhost:8080/o/<org>
*
* Note that the form of URLs depends on the settings in window.gristConfig object.
*/
import {unsavedChanges} from 'app/client/components/UnsavedChanges';
import {UrlState} from 'app/client/lib/UrlState';
import {decodeUrl, encodeUrl, getSlugIfNeeded, GristLoadConfig, IGristUrlState, useNewUI} from 'app/common/gristUrls';
import {Document} from 'app/common/UserAPI';
import isEmpty = require('lodash/isEmpty');
/**
* Returns a singleton UrlState object, initializing it on first use.
*/
export function urlState(): UrlState<IGristUrlState> {
return _urlState || (_urlState = new UrlState(window, new UrlStateImpl(window as any)));
}
let _urlState: UrlState<IGristUrlState>|undefined;
// Returns url parameters appropriate for the specified document, specifically `doc` and `slug`.
export function docUrl(doc: Document): IGristUrlState {
return {doc: doc.urlId || doc.id, slug: getSlugIfNeeded(doc)};
}
// Returns the home page for the current org.
export function getMainOrgUrl(): string { return urlState().makeUrl({}); }
// Get url for the login page, which will then redirect to nextUrl (current page by default).
export function getLoginUrl(nextUrl: string = _getCurrentUrl()): string {
return _getLoginLogoutUrl('login', nextUrl);
}
// Get url for the logout page, which will then redirect to nextUrl (signed-out page by default).
export function getLogoutUrl(nextUrl: string = getSignedOutUrl()): string {
return _getLoginLogoutUrl('logout', nextUrl);
}
// Get url for the login page, which will then redirect to nextUrl (current page by default).
export function getLoginOrSignupUrl(nextUrl: string = _getCurrentUrl()): string {
return _getLoginLogoutUrl('signin', nextUrl);
}
// Get url for the reset password page.
export function getResetPwdUrl(): string {
const startUrl = new URL(window.location.href);
startUrl.pathname = '/resetPassword';
return startUrl.href;
}
// Returns the URL for the "you are signed out" page.
export function getSignedOutUrl(): string { return getMainOrgUrl() + "signed-out"; }
// Helper which returns the URL of the current page, except when it's the "/signed-out" page, in
// which case returns the org URL. This is a good URL to use for a post-login redirect.
function _getCurrentUrl(): string {
return window.location.pathname.endsWith("/signed-out") ? getMainOrgUrl() : window.location.href;
}
// Helper for getLoginUrl()/getLogoutUrl().
function _getLoginLogoutUrl(method: 'login'|'logout'|'signin', nextUrl: string): string {
const startUrl = new URL(window.location.href);
startUrl.pathname = '/' + method;
startUrl.searchParams.set('next', nextUrl);
return startUrl.href;
}
export type IDocPage = number | 'new' | 'code';
/**
* Implements the interface expected by UrlState. It is only exported for the sake of tests; the
* only public interface is the urlState() accessor.
*/
export class UrlStateImpl {
constructor(private window: {gristConfig?: Partial<GristLoadConfig>}) {}
/**
* The actual serialization of a url state into a URL. The URL has the form
* <org-base>/
* <org-base>/ws/<ws>/
* <org-base>/doc/<doc>[/p/<docPage>]
* <org-base>/doc/<doc>[/m/fork][/p/<docPage>]
*
* where <org-base> depends on whether subdomains are in use, e.g.
* <org>.getgrist.com
* localhost:8080/o/<org>
*/
public encodeUrl(state: IGristUrlState, baseLocation: Location | URL): string {
const gristConfig = this.window.gristConfig || {};
return encodeUrl(gristConfig, state, baseLocation);
}
/**
* Parse a URL location into an IGristUrlState object. See encodeUrl() documentation.
*/
public decodeUrl(location: Location | URL): IGristUrlState {
const gristConfig = this.window.gristConfig || {};
return decodeUrl(gristConfig, location);
}
/**
* Updates existing state with new state, with attention to Grist-specific meanings.
* E.g. setting 'docPage' will reuse previous 'doc', but setting 'org' or 'ws' will ignore it.
*/
public updateState(prevState: IGristUrlState, newState: IGristUrlState): IGristUrlState {
const keepState = (newState.org || newState.ws || newState.homePage || newState.doc || isEmpty(newState) ||
newState.billing || newState.welcome) ?
(prevState.org ? {org: prevState.org, newui: prevState.newui} : {}) :
prevState;
return {...keepState, ...newState};
}
/**
* Billing pages and doc-specific pages for now require a page load.
* TODO: Make it so doc pages do NOT require a page load, since we are actually serving the same
* single-page app for home and for docs, and should only need a reload triggered if it's
* a matter of DocWorker requiring a different version (e.g. /v/OTHER/doc/...).
*/
public needPageLoad(prevState: IGristUrlState, newState: IGristUrlState): boolean {
const gristConfig = this.window.gristConfig || {};
const orgReload = prevState.org !== newState.org;
// Reload when moving to/from a document or between doc and non-doc.
const docReload = prevState.doc !== newState.doc;
// Reload when moving to/from a billing page.
const billingReload = Boolean(prevState.billing) !== Boolean(newState.billing);
// Reload when changing 'newui' flag.
const newuiReload = useNewUI(prevState.newui) !== useNewUI(newState.newui);
// Reload when moving to/from a welcome page.
const welcomeReload = Boolean(prevState.welcome) !== Boolean(newState.welcome);
return Boolean(orgReload || billingReload || gristConfig.errPage || docReload || newuiReload || welcomeReload);
}
/**
* Complete outstanding work before changes that would destroy page state, e.g. if there are
* edits to be saved.
*/
public async delayPushUrl(prevState: IGristUrlState, newState: IGristUrlState): Promise<void> {
if (newState.docPage !== prevState.docPage) {
return unsavedChanges.saveChanges();
}
}
}