Decentraland dApps
Common modules for our dApps.
Table of Contents
Modules
Common redux modules for dApps.
Wallet
This module takes care of connecting to MetaMask/Ledger, and insert in the state some useful information like address, network, mana and derivationPath.
Usage
You can use the following selectors importing them from decentraland-dapps/dist/modules/wallet/selectors
:
getData = (state: State) => BaseWallet
getError = (state: State) => string
getNetwork = (state: State) =>
'mainnet' | 'ropsten' | 'rinkeby' | 'kovan' | 'localhost'
getAddress = (state: State) => string
isConnected = (state: State) => boolean
isConnecting = (state: State) => boolean
Also you can hook to the following actions from your reducers/sagas by importing them from decentraland-dapps/dist/modules/wallet/actions
:
CONNECT_WALLET_REQUEST
CONNECT_WALLET_SUCCESS
CONNECT_WALLET_FAILURE
Also you can import types for those actions from that same file:
ConnectWalletRequestAction
ConnectWalletSuccessAction
ConnectWalletFailureAction
This is an example of how you can wait for the CONNECT_WALLET_SUCCESS
action to trigger other actions:
// modules/something/sagas.ts
import {
CONNECT_WALLET_SUCCESS,
ConnectWalletSuccessAction
} from 'decentraland-dapps/dist/modules/wallet/actions'
import { fetchSomethingRequest } from './actions'
export function* saga() {
yield takeLatest(CONNECT_WALLET_SUCCESS, handleConnectWalletSuccess)
}
function* handleConnectWalletSuccess(action: ConnectWalletSuccessAction) {
yield put(fetchSomethingRequest())
}
Installation
In order to install this module you will need to add a provider, a reducer and a saga to your dapps.
Provider:
Add the <WalletProvider>
as a child of your redux
provider. If you use react-router-redux
or connected-react-router
make sure the <ConnectedRouter>
is a child of the <WalletProvider>
and not the other way around, like this:
import * as React from 'react'
import * as ReactDOM from 'react-dom'
import { Provider } from 'react-redux'
import { ConnectedRouter } from 'connected-react-router'
import WalletProvider from 'decentraland-dapps/dist/providers/WalletProvider'
import { store, history } from './store'
ReactDOM.render(
<Provider store={store}>
<WalletProvider>
<ConnectedRouter history={history}>{/* Your App */}</ConnectedRouter>
</WalletProvider>
</Provider>,
document.getElementById('root')
)
Reducer:
Import the walletReducer
and add it at the root level of your dApp's reducer as wallet
, like this:
import { combineReducers } from 'redux'
import { walletReducer as wallet } from 'decentraland-dapps/dist/modules/wallet/reducer'
export const rootReducer = combineReducers({
wallet
// your other reducers
})
Saga:
You will need to create a walletSaga
and add it to your rootSaga
:
import { all } from 'redux-saga/effects'
import { walletSaga } from 'decentraland-dapps/dist/modules/wallet/sagas'
export function* rootSaga() {
yield all([
walletSaga()
// your other sagas here
])
}
Advanced Usage
You'll need to supply in which chain you're going to work. It won't affect wallets like Metamask, where you can choose which network to use on the wallet itself, but's necesary for things like email/phone based wallets. If you're using the Navbar container, this chain will determine in which chain the user must be. If they're on the incorrect chain (using a network picker with Metamask for example), a modal will pop up blocking the dapp until the state changes.
Remember that the chain id is the number that represents a particular network, 1 being mainnet
, 3 being ropsten
, etc.
Learn More
Instead of importing walletSaga
, use createWalletSaga
:
Saga:
import { all } from 'redux-saga/effects'
import { createWalletSaga } from 'decentraland-dapps/dist/modules/wallet/sagas'
const walletSaga = createWalletSaga({ CHAIN_ID: process.env.chainId })
export function* rootSaga() {
yield all([
walletSaga()
// your other sagas here
])
}
Actions:
If you want to hook a callback to connect the wallet, there're two things to keep in mind. The process of connecting a wallet consists in two steps, first enabling
it and then properly connecting it. The set of actions to keep in mind are the following (all from decentraland-dapps/dist/modules/wallet/actions
):
enableWalletRequest
enableWalletSuccess
enableWalletFailure
With it's corresponding actions and types from the same file:
ENABLE_WALLET_REQUEST
ENABLE_WALLET_SUCCESS
ENABLE_WALLET_FAILURE
EnableWalletRequestAction
EnableWalletSuccessAction
EnableWalletFailureAction
The wallet saga will listen for ENABLE_WALLET_SUCCESS
and automatically call CONNECT_WALLET_REQUEST
. If you use connect wallet
without enabling first it will only work if you enabled first and it'll stop working once the user disconnects the wallet from the site (if she ever does).
All of this is handled by SignInPage behind the scenes, so you can just use that instead. Remember to add .
Storage
The storage module allows you to save parts of the redux store in localStorage to make them persistent and migrate it from different versions without loosing it.
This module is required to use other modules like Transaction
, Translation
and Wallet
.
Installation
You need to add a middleware and two reducers to your dApp.
Middleware:
You will need to create a storageMiddleware
and add apply it along with your other middlewares:
// store.ts
import { applyMiddleware, compose, createStore } from 'redux'
import { createStorageMiddleware } from 'decentraland-dapps/dist/modules/storage/middleware'
import { migrations } from './migrations'
const composeEnhancers =
(window as any).__REDUX_DEVTOOLS_EXTENSION_COMPOSE__ || compose
const { storageMiddleware, loadStorageMiddleware } = createStorageMiddleware({
storageKey: 'storage-key' // this is the key used to save the state in localStorage (required)
paths: [] // array of paths from state to be persisted (optional)
actions: [] // array of actions types that will trigger a SAVE (optional)
migrations: migrations // migration object that will migrate your localstorage (optional)
})
const middleware = applyMiddleware(
// your other middlewares
storageMiddleware
)
const enhancer = composeEnhancers(middleware)
const store = createStore(rootReducer, enhancer)
loadStorageMiddleware(store)
Migrations:
migrations
looks like
migrations.ts
:
export const migrations = {
2: migrateToVersion2(data),
3: migrateToVersion3(data)
}
Where every key
represent a migration and every method
should return the new localstorage data:
function migrateToVersion2(data) {
return omit(data, 'translations')
}
You don't need to care about updating the version of the migration because it will be set automatically.
Reducer:
You will need to add storageReducer
as storage
to your rootReducer
and then wrap the whole reducer with storageReducerWrapper
import { combineReducers } from 'redux'
import {
storageReducer as storage,
storageReducerWrapper
} from 'decentraland-dapps/dist/modules/storage/reducer'
export const rootReducer = storageReducerWrapper(
combineReducers({
storage
// your other reducers
})
)
Advanced Usage
This module is necessary to use other modules like Transaction
, Translation
and Wallet
, but you can also use it to make other parts of your dApp's state persistent
Learn More
The first parameter of createStorageMiddleware
is the key used to store the state data in localStorage (required).
The second parameter is an array of paths from the state that you want to be stored, ie:
const paths = [['invites'][('user', 'name')]]
That will make state.invites
and state.user.name
persistent. This parameter is optional and you don't have to configure it to use the Transaction
and/or Translation
modules.
The third parameter is an array of action types that will trigger a SAVE of the state in localStorage, ie:
const actionTypes = [SEND_INVITE_SUCCESS]
This parameter is optional and is and you don't have to configure it to use the Transaction
and/or Translation
modules.
Transaction
The transaction module allows you to watch for pending transactions and keep track of the transaction history.
Dependencies
This module requires you to install the Storage module in order to work.
Usage
When you have an action that creates a transaction and you want to watch it, you can do with buildTransactionPayload
:
import { action } from 'typesafe-actions'
import { buildTransactionPayload } from 'decentraland-dapps/dist/modules/transaction/utils'
// Send Invite
export const SEND_INVITE_REQUEST = '[Request] Send Invite'
export const SEND_INVITE_SUCCESS = '[Success] Send Invite'
export const SEND_INVITE_FAILURE = '[Failure] Send Invite'
export const sendInvitesRequest = (address: string) =>
action(SEND_INVITE_REQUEST, {
address
})
export const sendInvitesSuccess = (txHash: string, address: string) =>
action(SEND_INVITE_SUCCESS, {
...buildTransactionPayload(txHash, {
address
}),
address
})
export const sendInvitesFailure = (address: string, errorMessage: string) =>
action(SEND_INVITE_FAILURE, {
address,
errorMessage
})
export type SendInvitesRequestAction = ReturnType<typeof sendInvitesRequest>
export type SendInvitesSuccessAction = ReturnType<typeof sendInvitesSuccess>
export type SendInvitesFailureAction = ReturnType<typeof sendInvitesFailure>
Or buildTransactionWithReceiptPayload
if you need the tx event logs
export const sendInvitesSuccess = (txHash: string, address: string) =>
action(SEND_INVITE_SUCCESS, {
...buildTransactionWithReceiptPayload(txHash, {
address
}),
address
})
It will save the event logs inside { receipt: { logs: [] } }
after the tx was confirmed
Then you can use the selectors getPendingTransactions
and getTransactionHistory
from decentraland-dapps/dist/modules/transaction/selectors
to get the list of pending transactions and the transaction history.
Installation
You need to add a middleware, a reducer and a saga to use this module.
Middleware:
Create the transactionMiddleware
and apply it
// store.ts
import { createTransactionMiddleware } from 'decentraland-dapps/dist/modules/transaction/middleware'
const transactionMiddleware = createTransactionMiddleware()
const middleware = applyMiddleware(
// your other middlewares
transactionMiddleware
)
Reducer:
Add transactionReducer
as transaction
to your rootReducer
import { combineReducers } from 'redux'
import { transactionReducer as transaction } from 'decentraland-dapps/dist/modules/transaction/reducer'
export const rootReducer = combineReducers({
transaction
// your other reducers
})
Saga:
Add transactionSaga
to your rootSaga
import { all } from 'redux-saga/effects'
import { transactionSaga } from 'decentraland-dapps/dist/modules/transaction/sagas'
export function* rootSaga() {
yield all([
transactionSaga()
// your other sagas
])
}
Advanced Usage
You can make your reducers listen to confirmed transactions and update your state accordingly
Learn More
Taking the example of the SEND_INVITE_SUCCESS
action type shown in the Usage
section above, let's say we want to decrement the amount of available invites after the transaction is mined, we can do so by adding the FETCH_TRANSACTION_SUCCESS
action type in our reducer:
// modules/invite/reducer
import { AnyAction } from 'redux'
import { loadingReducer } from 'decentraland-dapps/dist/modules/loading/reducer'
import {
FETCH_INVITES_REQUEST,
FETCH_INVITES_SUCCESS,
FETCH_INVITES_FAILURE,
FetchInvitesSuccessAction,
FetchInvitesFailureAction,
FetchInvitesRequestAction,
+ SEND_INVITE_SUCCESS
} from './actions'
+ import { FETCH_TRANSACTION_SUCCESS, FetchTransactionSuccessAction } from 'decentraland-dapps/dist/modules/transaction/actions';
export type InviteState = {
loading: AnyAction[]
data: {
[address: string]: number
}
error: null | string
}
export type InviteReducerAction =
| FetchInvitesRequestAction
| FetchInvitesSuccessAction
| FetchInvitesFailureAction
+ | FetchTransactionSuccessAction
export const INITIAL_STATE: InviteState = {
loading: [],
data: {},
error: null
}
export function invitesReducer(
state: InviteState = INITIAL_STATE,
action: InviteReducerAction
): InviteState {
switch (action.type) {
case FETCH_INVITES_REQUEST: {
return {
...state,
loading: loadingReducer(state.loading, action)
}
}
case FETCH_INVITES_SUCCESS: {
return {
loading: loadingReducer(state.loading, action),
data: {
...state.data,
[action.payload.address]: action.payload.amount
},
error: null
}
}
case FETCH_INVITES_FAILURE: {
return {
...state,
loading: loadingReducer(state.loading, action),
error: action.payload.errorMessage
}
}
+ case FETCH_TRANSACTION_SUCCESS: {
+ const { transaction } = action.payload
+ switch (transaction.actionType) {
+ case SEND_INVITE_SUCCESS: {
+ const { address } = (transaction as any).payload
+ return {
+ ...state,
+ data: {
+ ...state.data,
+ [address]: state.data[address] - 1
+ }
+ }
+ }
+ default:
+ return state
+ }
+ }
default: {
return state
}
}
}
Authorization
This module allows you to grant/revoke approvals to a token. It works for both allowance and approval for all.
Dependencies
This module depends on the wallet and the transactions module
Usage
After installing the module, you'll need to initialize the authorizations you want to query using the following action:
fetchAuthorizationsRequest(authorizations: Authorization[])
That action will query the blockchain for each authorization and update the state so you can check it later. You can hook to:
FETCH_AUTHORIZATIONS_REQUEST
FETCH_AUTHORIZATIONS_SUCCESS
FETCH_AUTHORIZATIONS_FAILURE
Once you have this hooked up, you can either grant or revoke a token by using:
grantTokenRequest(authorization: Authorization)
revokeTokenRequest(authorization: Authorization)
You can hook to the following actions:
GRANT_TOKEN_REQUEST
GRANT_TOKEN_SUCCESS
GRANT_TOKEN_FAILURE
REVOKE_TOKEN_REQUEST
REVOKE_TOKEN_SUCCESS
REVOKE_TOKEN_FAILURE
Keep in mind that each of these actions send a transaction, so if you wan't to check if they're done, check the action type of the FETCH_TRANSACTION_SUCCESS
action. More info on the transactions module
Installation
Reducer
Add the authorizationReducer
as authorization
to your rootReducer
:
import { combineReducers } from 'redux'
import { authorizationReducer as authorization } from 'decentraland-dapps/dist/modules/authorization/reducer'
export const rootReducer = combineReducers({
authorization
// your other reducers
})
Sagas
Add the authorizationSaga
to the rootSaga
:
import { all } from 'redux-saga/effects'
import { authorizationSaga } from 'decentraland-dapps/dist/modules/authorization/sagas'
export function* rootSaga() {
yield all([
authorizationSaga()
// your other sagas
])
}
Translation
This module allows you to do i18n.
Dependencies
This module has an optional dependency on Storage module to cache translations and boot the application faster. To learn more read the Advanced Usage
section of this module.
Usage
Using the helper t()
you can add translations to your dApp
import * as React from 'react'
import { t } from 'decentraland-dapps/dist/modules/translation/utils'
export default class BuyButton extends React.PureComponent {
render() {
return <button>{t('but_page.buy_button')}</button>
}
}
Then you just have to provide locale files like this:
en.json
{
"buy_page": {
"buy_button": "Buy"
}
}
es.json
{
"buy_page": {
"buy_button": "Comprar"
}
}
Yon can dispatch the changeLocale(locale: string)
action from decentraland-dapps/dist/modules/translation/actions
to change the language
Installation
You will need to add a provider, a reducer and a saga to use this module
Provider:
Add the <TranslationProvider>
as a child of your redux
provider, passing the locales
that you want to support. If you use react-router-redux
or connected-react-router
make sure the <ConnectedRouter>
is a child of the <TranslationProvider>
and not the other way around, like this:
import * as React from 'react'
import * as ReactDOM from 'react-dom'
import { Provider } from 'react-redux'
import { ConnectedRouter } from 'connected-react-router'
import TranslationProvider from 'decentraland-dapps/dist/providers/TranslationProvider'
import { store, history } from './store'
ReactDOM.render(
<Provider store={store}>
<TranslationProvider locales={['en', 'es', 'ko', 'zh']}>
<ConnectedRouter history={history}>{/* Your App */}</ConnectedRouter>
</TranslationProvider>
</Provider>,
document.getElementById('root')
)
Reducer:
Add the translationReducer
as translation
to your rootReducer
:
import { combineReducers } from 'redux'
import { translationReducer as translation } from 'decentraland-dapps/dist/modules/translation/reducer'
export const rootReducer = combineReducers({
translation
// your other reducers
})
Saga:
Create a translationSaga
and add it to your rootSaga
. You need to provide an object containing all the translations, or a function that takes the locale
and returns a Promise
of the translations for that locale (you can use that to fetch the translations from a server instead of bundling them in the app). Here are examples for the two options:
- Bundling the translations in the dApp:
en.json
{
"buy_page": {
"buy_button": "Buy"
}
}
es.json
{
"buy_page": {
"buy_button": "Comprar"
}
}
translations.ts
const en = require('./en.json')
const es = require('./es.json')
export { en, es }
sagas.ts
import { all } from 'redux-saga/effects'
import { createTranslationSaga } from 'decentraland-dapps/dist/modules/translation/sagas'
import * as translations from './translations'
export const translationSaga = createTranslationSaga({
translations
})
export function* rootSaga() {
yield all([
translationSaga()
// your other sagas
])
}
- Fetching translations from server
sagas.ts
import { all } from 'redux-saga/effects'
import { createTranslationSaga } from 'decentraland-dapps/dist/modules/translation/sagas'
import { api } from 'lib/api'
export const translationSaga = createTranslationSaga({
getTranslation: locale => api.fetchTranslations(locale)
})
export function* rootSaga() {
yield all([
translationSaga()
// your other sagas
])
}
Read the Advanced Usage
section below to learn how to cache translations and make your application boot faster.
Advanced Usage
You can use the Storage module to cache translations (read 2. Fetching translations from server
above).
Learn More
After installing the Storage module you can persist the translations by adding 'translation'
to your storage middleware paths:
// store.ts
const { storageMiddleware, loadStorageMiddleware } = createStorageMiddleware({
storageKey: 'my-dapp-storage',
paths: ['translation']
})
This will store the translation module in localStorage
, so next time your application is started it will boot with all the translations populated before even fetching them from the server.
Analytics
The analytics module let's integrate Segment into your dApp.
You need to have the Wallet
module installed in order to send identify
events.
This module will import the segment snippet into your dApp. Be aware that the middleware must be loaded before using segment methods.
To send track
events, add an analytics.ts
file and require it from your entry point, and use the add()
helper to add actions that you want to track:
// analytics.ts
import { add } from 'decentraland-dapps/dist/modules/analytics/utils'
import {
CREATE_VOTE_SUCCESS,
CreateVoteSuccessAction
} from 'modules/vote/actions'
add(CREATE_VOTE_SUCCESS, 'Vote', (action: CreateVoteSuccessAction) => ({
poll_id: action.payload.vote.poll_id,
option_id: action.payload.vote.option_id,
address: action.payload.wallet.address
}))
The first parameter is the action type that you want to track (required).
The second parameter is the event name for that action (it will show up with that name in Segment). If none provided the action type will be used as the event name.
The third parameter is a function that takes the action and returns the data that you want to associate with that event (it will be sent to Segment). If none is provided the whole action will be sent.
Installation
You need to apply a middleware and a saga to use this module
Middleware:
// store.ts
import { createAnalyticsMiddleware } from '@dapps/modules/analytics/middleware'
const analyticsMiddleware = createAnalyticsMiddleware('SEGMENT WRITE KEY')
const middleware = applyMiddleware(
// your other middlewares
analyticsMiddleware
)
const enhancer = composeEnhancers(middleware)
const store = createStore(rootReducer, enhancer)
Saga:
import { all } from 'redux-saga/effects'
import { analyticsSaga } from 'decentraland-dapps/dist/modules/analytics/sagas'
export function* rootSaga() {
yield all([
analyticsSaga()
// your other sagas
])
}
This uses by default the '@@router/LOCATION_CHANGE'
action type to track page changes. If you need to use a different action type, you can do the following:
import { all } from 'redux-saga/effects'
import { createAnalyticsSaga } from 'decentraland-dapps/dist/modules/analytics/sagas'
const analyticsSaga = createAnalyticsSaga({
LOCATION_CHANGE: 'custom action type'
})
export function* rootSaga() {
yield all([
analyticsSaga()
// your other sagas
])
}
Advanced Usage
You can use the same redux action type to generate different Segment events if you pass a function as the second parameter instead of a string:
add(AUTHORIZE_LAND_SUCCESS, action =>
action.isAuthorized ? 'Authorize LAND' : 'Unauthorize LAND'
)
Loading
The loading module is used to keep track of async actions in the state.
Usage
You can use the selectors isLoading(state)
and isLoadingType(state, ACTION_TYPE)
from decentraland-dapps/dist/modules/loading/selectors
to know if a domain has pending actions or if a specific action is still pending
In order to use these selectors you need to use the loadingReducer
within your domain reducers, here is an example:
import {
loadingReducer,
LoadingState
} from 'decentraland-dapps/dist/modules/loading/reducer'
import {
FETCH_INVITES_REQUEST,
FETCH_INVITES_SUCCESS,
FETCH_INVITES_FAILURE,
FetchInvitesSuccessAction,
FetchInvitesFailureAction,
FetchInvitesRequestAction
} from './actions'
export type InviteState = {
loading: LoadingState
data: {
[address: string]: number
}
error: null | string
}
export const INITIAL_STATE: InviteState = {
loading: [],
data: {},
error: null
}
export type InviteReducerAction =
| FetchInvitesRequestAction
| FetchInvitesSuccessAction
| FetchInvitesFailureAction
export function invitesReducer(
state: InviteState = INITIAL_STATE,
action: InviteReducerAction
): InviteState {
switch (action.type) {
case FETCH_INVITES_REQUEST: {
return {
...state,
loading: loadingReducer(state.loading, action)
}
}
case FETCH_INVITES_SUCCESS: {
return {
loading: loadingReducer(state.loading, action),
data: {
...state.data,
[action.payload.address]: action.payload.amount
},
error: null
}
}
case FETCH_INVITES_FAILURE: {
return {
...state,
loading: loadingReducer(state.loading, action),
error: action.payload.errorMessage
}
}
default: {
return state
}
}
}
Now we can for example use the selector isLoadingType(state.invite.loading, FETCH_INVITES_REQUEST)
to know if that particular action is still pending, or isLoading(states.invite)
to know if there's any pending action for that domain.
Also, all the pending actions are stored in an array in state.invite.loading
so we can use that information in the UI if needed (i.e. disable a button)
Modal
Leverages redux state and provides actions to open and close each modal by name. It provides a few simple actions:
openModal(name: string, metadata: any = null)
closeModal(name: string)
closeAllModals()
toggleModal(name: sgtring)
It also provides a selector to get the open modals:
getOpenModals(state): ModalState
Installation
In order to use this module you need to add a reducer and a provider.
Provider:
Add the <ModalProvider>
as a parent of your routes. It takes an object of { {modalName: string]: React.Component }
as a prop (components
). It'll use it to render the appropiate modal when you call openModal(name: string)
import * as React from 'react'
import * as ReactDOM from 'react-dom'
import { Provider } from 'react-redux'
import { ConnectedRouter } from 'connected-react-router'
import ModalProvider from 'decentraland-dapps/dist/providers/ModalProvider'
import * as modals from 'components/Modals'
import { store, history } from './store'
ReactDOM.render(
<Provider store={store}>
<ModalProvider components={modals}>
<ConnectedRouter history={history}>{/* Your App */}</ConnectedRouter>
</ModalProvider>
</Provider>,
document.getElementById('root')
)
where modals
could look like this:
// components/Modals/index.ts
export { default as HelpModal } from './HelpModal'
Each modal will receive the properties defined on the ModalComponent
type, found on modules/modal/types
, so for example:
import { Modal } from 'decentraland-ui/dist/components/Modal/Modal'
import { ModalProps } from 'decentraland-dapps/dist/modules/modal/types'
type HelpModalProps = ModalProps & {
// Some custom props, maybe from a container
}
export default class HelpModal extends React.Component<HelpModalProps> {
render() {
const { name, metadata, onClose } = this.props
// The Modal component here can be whatever you like, just make sure to call onClose when you want to close it, to update the state
// For more examples check the advanced usage
return <Modal open={true} className={name} onClose={onClose} />
}
}
If want to use decentraland-ui's Modal but you don't want to repeat the open
, className
and onClose
props, you can use this module's Modal
Reducer:
Add the modalReducer
as modal
to your rootReducer
:
import { combineReducers } from 'redux'
import { modalReducer as modal } from 'decentraland-dapps/dist/modules/modal/reducer'
export const rootReducer = combineReducers({
modal
// your other reducers
})
Advanced Usage
You can have add more strict typing to the actions:
Learn More
The modal actions allow for a generic type for the name. So say you want to type the name of your available modals, you can create a `modal` module in your dApp and add the following files:
Types:
// modules/types/actions.ts
import * as modals from 'components/Modals' // same import as the one use for <ModalProvider />
export ModalName = keyof typeof modals
Actions:
// modules/modal/actions.ts
import { getModalActions } from 'decentraland-dapps/dist/modules/modal/actions'
import { ModalName } from './types'
const { openModal, closeModal, toggleModal } = getModalActions<ModalName>()
export * from 'decentraland-dapps/dist/modules/modal/actions'
export { openModal, closeModal, toggleModal }
Toasts
Leverages redux state and provides actions to show and hide toasts. It provides a few simple actions:
showToast(toast: Omit<Toast, 'id'>)
hideToast(id: number)
You can check the properties a toast has here. It extends the props already defined on decentraland-ui's toast
It also provides a selector to get the open toasts:
getToasts(state): Toast[]
Installation
In order to use this module you need to add a reducer, a provider and a saga.
Provider:
Add the <ToastProvider>
as a parent of your routes. It takes an optional position
param to set where you want the toasts to appear. It'll default to top left
import * as React from 'react'
import * as ReactDOM from 'react-dom'
import { Provider } from 'react-redux'
import { ConnectedRouter } from 'connected-react-router'
import ToastProvider from 'decentraland-dapps/dist/providers/ToastProvider'
import * as modals from 'components/Modals'
import { store, history } from './store'
ReactDOM.render(
<Provider store={store}>
<ToastProvider position="bottom right">
<ConnectedRouter history={history}>{/* Your App */}</ConnectedRouter>
</ToastProvider>
</Provider>,
document.getElementById('root')
)
Reducer:
Add the toastReducer
as toast
to your rootReducer
:
import { combineReducers } from 'redux'
import { toastReducer as toast } from 'decentraland-dapps/dist/modules/toast/reducer'
export const rootReducer = combineReducers({
toast
// your other reducers
})
Saga:
You will need to create a toastSaga
and add it to your rootSaga
:
import { all } from 'redux-saga/effects'
import { toastSaga } from 'decentraland-dapps/dist/modules/wallet/sagas'
export function* rootSaga() {
yield all([
toastSaga()
// your other sagas here
])
}
Toasts themselves do not do any async action, but this is needed to render each toast properly, without overloading the redux state with unnecesary information.
Profile
Leverages the redux state and provides actions and selectors to work with profiles.
Actions
The module exposes the following actions:
The loadProfileRequest
action will trigger a profile fetch through the profile sagas that will result, if successful, in the profile metadata being loaded. The success and failure actions of the request action are also included and will be used to signal a successful or a failing request.
The setProfileAvatarDescriptionRequest
action will trigger a change in the first avatar of the user's profile, that will result in a new entity being deployed for that profile, with the description of the avatar changed for the one specified in the action. The success and failure actions of the request action are also included and will be used to signal a successful or a failing request.
The clearProfileError
action will clear any profile request errors from the store.
Installation
To install the profile module, just import it and add it to the store by combining the existing reducers with the one provided in the profile module.
import { profileReducer as profile } from 'decentraland-dapps/dist/modules/profile/reducer'
export const createRootReducer = (history: History) =>
combineReducers({
profile,
otherReducer
})
export type RootState = ReturnType<ReturnType<typeof createRootReducer>>
Lib
Common libraries for dApps
API
The BaseAPI
class can be extended to make requests and it handles the unwrapping of responses by decentraland-server
Usage
// lib/api
import { BaseAPI } from 'decentraland-dapps/dist/lib/api'
const URL = 'http://localhost/api'
export class API extends BaseAPI {
fetchSomething() {
return this.request('get', '/something', {})
}
}
export const api = new API(URL)
ETH
Ethereum helpers
Pristine Provider
Get user's connected provider without being wrapped by any library
import { getConnectedProvider } from 'decentraland-dapps/dist/lib/eth'
async function wrapProviderToEthers() {
const provider = await getConnectedProvider()
if (provider) {
return new etheres.providers.Web3Provider(provider)
}
}
Eth instance
Get an Eth instance with your lib of choice
import { Eth } from 'web3x/eth'
import { getConnectedProvider } from 'decentraland-dapps/dist/lib/eth'
async function doSomething() {
const provider = await getConnectedProvider()
if (!provider) throw new Error()
// web3x
const eth = new Eth(provider) // or new Eth(new LegacyProviderAdapter(provider))
// ethers
const eth = new ethers.providers.Web3Provider(provider)
}
Helpers
isCucumberProvider
: Check if the provider is acucumberProvider
.isCoinbaseProvider
: Check if the provider is acoinbaseProvider
.isDapperProvider
: Check if the provider is a dapper's provider.isValidChainId
: Check if the chain id is valid.
Entities
The entities library provides a set of methods to retrieve or deploy entities.
Usage
The deployEntity
method does everything needed to deploy an entity that doesn't have new files. It pre-procceses the entity to prepare it for the deployment, it creates the auth chain and asks the user to sign the deployment of the entity and then deploys it.
// lib/entities
import { EntitesOperator } from 'decentraland-dapps/dist/lib/entities'
const URL = 'http://localhost/api'
const profileEntity = { ... }
const entitiesOperator = new EntitesOperator(URL)
await entitiesOperator.deployEntityWithoutNewFiles(
entity,
EntityTypes.PROFILE,
anAddress
)
The getProfileEntity
gets the first profile of all the profiles an address has.
// lib/entities
import { EntitesOperator } from 'decentraland-dapps/dist/lib/entities'
const URL = 'http://localhost/api'
const entitiesOperator = new EntitesOperator(URL)
await entitiesOperator.getProfile(anAddress)
Containers
Common containers for dApps
Navbar
The <Navbar>
container can be used in the same way as the <Navbar>
component from decentraland-ui but it's already connected to the redux store. You can override any NavbarProp
if you want to connect differently, and you can pass all the regular NavbarProps
to it.
Dependencies
This container requires you to install the Wallet. It also has support for i18n out of the box if you include the Translation module.
Usage
This is an example of a SomePage
component that uses the <Navbar>
container:
import * as React from 'react'
import { Container } from 'decentraland-ui/dist/components/Container/Container'
import Navbar from 'decentraland-dapps/dist/containers/Navbar'
import './SomePage.css'
export default class SomePage extends React.PureComponent {
static defaultProps = {
children: null
}
render() {
const { children } = this.props
return (
<>
<Navbar />
<div className="SomePage">
<Container>{children}</Container>
</div>
</>
)
}
}
This <Navbar>
will show the user's blockie and mana balance because it is connected to the store.
i18n
If you are using the Translation module, the Navbar
contatiner comes with support for the 6 languages supported by the library.
Advanced Usage
You can override any of the default translations for any locale if you need to
Learn More
Say you want to override some translations in English, just include any or all of the following translations in your en.json
locale file:
{
"@dapps": {
"navbar": {
"account": {
"connecting": "Connecting...",
"signIn": "Sign In"
},
"menu": {
"agora": "Agora",
"blog": "Blog",
"docs": "Docs",
"marketplace": "Marketplace"
}
}
}
}
Footer
The <Footer>
container can be used in the same way as the <Footer>
component from decentraland-ui but it's already connected to the redux store. You can override any FooterProps
if you want to connect differently, and you can pass all the regular FooterProps
to it.
Dependencies
The <Footer>
container has support for i18n out of the box if you include the Translation module.
Usage
This is an example of a SomePage
component that uses the <Footer>
container:
import * as React from 'react'
import { Container } from 'decentraland-ui/dist/components/Container/Container'
import Navbar from 'decentraland-dapps/dist/containers/Navbar'
import './SomePage.css'
export default class SomePage extends React.PureComponent {
render() {
const { children } = this.props
return (
<>
<div className="SomePage">
<Container>{children}</Container>
</div>
<Footer locales={['en', 'es']} />
</>
)
}
}
This <Footer>
will show only English and Spanish as the options in the language dropdown. If you don't provide any it will use only English.
i18n
If you are using the Translation module, the Footer
contatiner comes with support for the 6 languages supported by the library.
Advanced Usage
You can override any of the default translations for any locale if you need to
Learn More
Say you want to override some translations in English, just include any or all of the following translations in your en.json
locale file:
{
"@dapps": {
"footer": {
"dropdown": {
"en": "English",
"es": "Spanish",
"fr": "French",
"ja": "Japanese",
"ko": "Korean",
"zh": "Chinese"
},
"links": {
"content": "Content Policy",
"ethics": "Code of Ethics",
"home": "Home",
"privacy": "Privacy Policy",
"terms": "Terms of Use"
}
}
}
}
SignInPage
The <SignInPage>
container can be used in the same way as the <SignIn>
component from decentraland-ui but it's already connected to the redux store. You can override any SignInProp
if you want to connect differently, and you can pass all the regular SignInProps
to it.
Dependencies
This container requires you to install the Wallet. It also has support for i18n out of the box if you include the Translation module.
Usage
You can import the <SignInPage>
container and use it on your routes:
import * as React from 'react'
import { Switch, Route } from 'react-router-dom'
import SignInPage from 'decentraland-dapps/dist/containers/SignInPage'
//...
<Switch>
<Route exact path='/' component={...} />
{/* your dapps routes... */}
<Route exact path='/sign-in' component={SignInPage} />
</Switch>
i18n
If you are using the Translation module, the SignInPage
contatiner comes with support for the 6 languages supported by the library.
Advanced Usage
You can override any of the default translations for any locale if you need to
Learn More
Say you want to override some translations in English, just include any or all of the following translations in your en.json
locale file:
{
"@dapps": {
"sign_in": {
"connect": "Connect",
"connected": "Connected",
"connecting": "Connecting...",
"error": "Could not connect to wallet.",
"get_started": "Get Started",
"options": {
"desktop": "You can use the {metamask_link} extension or a hardware wallet like {ledger_nano_link}.",
"mobile": "You can use mobile browsers such as {coinbase_link} or {imtoken_link}."
}
}
}
}
Modal
The <Modal>
it's a shorthand for some common features used by modals provided to ModalProvider.
Usage
import * as React from 'react'
import Modal from 'decentraland-dapps/dist/containers/Modal'
export default class MyComponent extends React.PureComponent {
render() {
return (
const { name } = this.props
<Modal name={name} {/* Other Modal props from decentraland ui */>
<Modal.Header>
</Modal.Header>
<Modal.Description>
</Modal.Description>
</Modal>
)
}
}
Behind the scenes Modal is setting the following properties:
open = { true }
className = { name }
size = 'small'
onClose = {
/*close the modal by name*/
}
TransactionLink
The <TransactionLink>
can be used to link a transaction hash to Etherscan.io, and it connects to the redux store to know on which network the user is on.
Dependencies
This container requires you to install the Wallet module
Usage
import * as React from 'react'
import TransactionLink from 'decentraland-dapps/dist/containers/TransactionLink'
export default class MyComponent extends React.PureComponent {
render() {
return (
<p>
You sent an <TransactionLink txHash={'0x...'}>invite</TransactionLink>
</p>
)
}
}
Components
Common Components for dApps
Intercom
The <Intercom>
will add an intercom widget to your app.
Usage
import * as React from 'react'
import Intercom from 'decentraland-dapps/dist/components/Intercom'
export default class MyComponent extends React.PureComponent {
render() {
return (
<div>
{/* (...) */}
<Intercom
appId={YOUR_APP_ID}
data={/*optional data sent to intercom */}
/>
</div>
)
}
}