hashgraph · itsbrandondev · Jun 5, 2024 · Mar 14, 2024 · May 27, 2024 · Jun 4, 2024
@@ -187,6 +187,67 @@ to approve or reject the session:
 Upon receiving a `session_request` event, process the request. For instance, if the dApp
 requests a transaction to be signed:
 
+#### Extension popup
+
+By default, it is not possible to directly pop up an extension with Wallet Connect. However, to
+allow this possibility, the dAppConnector look for extensions. If you create the AppConnector,
+it will automatically send a message to the extension to detect if it is installed. In case the
+extension is installed, it will be added to the available extensions and its data can be found
+at the extensions property of dAppConnector.
+
+To connect an available extension, use the method `connectExtension(<extensionId>)`. This will
+link the extension to the signer and session. Whenever you use the signer created for this
+session, the extension will automatically open. You can find out if the extension is available
+by checking the `extensions` property.
+
+```javascript
+const dAppConnector = new DAppConnector(
+  dAppMetadata,
+  LedgerId.TESTNET,
+  projectId,
+  Object.values(HederaJsonRpcMethod),
+  [HederaSessionEvent.ChainChanged, HederaSessionEvent.AccountsChanged],
+  [HederaChainId.Testnet]
+)
+
+[...]
+
+dAppConnector?.extensions?.forEach((extension) => {
+  console.log(extension)
+})
+
+const extension = dAppConnector?.extensions?.find((extension) => extension.name === '<Extension name>')
+if (extension.available) {
+  await dAppConnector!.connectExtension(extension.id);
+  const signer = dAppConnector.getSigner(AccountId.fromString('0.0.12345'))
+
+  // This request will open the extension
+  const response = await signer.signAndExecuteTransaction(transaction)
+}
+```
+
+Wallets that are compatible should be able to receive and respond to the following messages:
+
+- `"hedera-extension-query"`: The extension is required to respond with
+  `"hedera-extension-response"` and provide the next set of data in the metadata property.
+  ```javascript
+  let metadata = {
+    id: '<extesnionId>',
+    name: '<Wallet name>',
+    url: '<Wallet url>',
+    icon: '<Wallet con>',
+    description: '<Wallet url>',
+  }
+  ```
+- `"hedera-extension-open-<extensionId>"`: The extension needs to listen to this message and
+  automatically open.
+- `"hedera-extension-connect-<extensionId>"`: The extension must listen to this message and
+  utilize the `pairingString` property in order to establish a connection.
+
+This communication protocol between the wallet and web dApps requires an intermediate script to
+use the Chrome API. Refer to the
+[Chrome Extensions documentation](https://developer.chrome.com/docs/extensions/develop/concepts/messaging)
+
 ## Demo & docs
 
 This repository includes a vanilla html/css/javascript implementation with a dApp and wallet

@@ -0,0 +1,23 @@
+<!doctype html>
+<html>
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>dApp</title>
+    <link rel="stylesheet" href="/main.css" />
+  </head>
+
+  <body>
+    <main>
+      <h1>dApp</h1>
+      <p>
+        This demo dApp requires a project id from WalletConnect. Please see
+        <a target="_blank" href="https://cloud.walletconnect.com">
+          https://cloud.walletconnect.com
+        </a>
+      </p>
+      <div id="root"></div>
+    </main>
+    <script src="main.js"></script>
+  </body>
+</html>
@@ -0,0 +1,186 @@
+* {
+  box-sizing: border-box;
+  border-radius: 1rem;
+  appearance: none;
+}
+body {
+  margin: 0;
+  font-family: sans-serif;
+  color: white;
+  background: black;
+}
+main {
+  padding: 1rem;
+  margin: 0 auto;
+  max-width: 1400px;
+}
+
+section {
+  color: black;
+  background-color: white;
+  margin: 3rem 0;
+  padding: 1rem;
+  background:
+    linear-gradient(white, white) padding-box,
+    linear-gradient(to right, #5281e7, #765aea) border-box;
+  border: 6px solid transparent;
+  /* border-radius: 0 10rem 10rem; */
+  padding: 4vw 6vw;
+  box-shadow: 0 10px 25px 0 rgba(0, 0, 0, 0.1);
+  /* nesting natively supported by some browsers */
+  & form fieldset {
+    display: flex;
+    flex-direction: column;
+
+    & label {
+      padding: 1rem 0;
+      font-weight: bold;
+    }
+  }
+}
+
+a {
+  color: #5381e7;
+  text-decoration: none;
+  &:hover {
+    filter: brightness(1.4);
+  }
+}
+
+button {
+  max-width: fit-content;
+  color: white;
+  background: linear-gradient(160deg, #3ec878, #21a056);
+  position: relative;
+  z-index: 1;
+  cursor: pointer;
+  margin: 1rem 0;
+  appearance: none;
+  padding: 0.5rem 1rem;
+  border: 1px solid transparent;
+  border-radius: 1rem;
+  transition: opacity 0.3s;
+
+  &::before {
+    content: '';
+    background: linear-gradient(160deg, #21a056, #3ec878);
+    position: absolute;
+    border-radius: 15px;
+    top: -1px;
+    left: -1px;
+    width: calc(100% + 2px);
+    height: calc(100% + 2px);
+    opacity: 0;
+    transition: opacity 0.3s;
+    z-index: -1;
+  }
+
+  &:hover::before {
+    opacity: 1;
+  }
+  &:disabled {
+    opacity: 0.5;
+    cursor: not-allowed;
+  }
+}
+
+input,
+select {
+  width: 100%;
+  height: 2rem;
+  border: 1px solid black;
+  margin: 0.5rem 0;
+  padding: 0.5rem;
+  &:disabled {
+    color: transparent;
+    border: 1px solid lightgrey;
+    background-color: #fafafa;
+  }
+}
+#init input,
+#init select {
+  &:disabled {
+    color: black;
+    border: 1px solid black;
+  }
+}
+
+hr {
+  width: 100%;
+}
+
+dialog {
+  max-width: 60rem;
+  position: relative;
+  padding: 1rem;
+  background:
+    linear-gradient(white, white) padding-box,
+    linear-gradient(to right, #5281e7, #765aea) border-box;
+  border: 6px solid transparent;
+  box-shadow: 0 10px 25px 0 rgba(0, 0, 0, 0.1);
+}
+
+dialog::backdrop {
+  background: hsl(0 0% 0% / 50%);
+}
+
+dialog > div:first-child > button {
+  color: white;
+  background: linear-gradient(160deg, #5d5f5f, #2d2d2d);
+  font-size: 0.75em;
+
+  &::before {
+    content: '';
+    background: linear-gradient(160deg, #2d2d2d, #5d5f5f);
+  }
+}
+
+dialog > div:first-child {
+  display: flex;
+  flex-direction: row;
+  justify-content: space-between;
+  align-items: center;
+}
+
+dialog > div:nth-child(2) {
+  padding: 2rem;
+}
+
+.loading {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+}
+
+.loader {
+  width: 48px;
+  height: 48px;
+  border: 3px solid #765aea;
+  border-radius: 50%;
+  display: inline-block;
+  position: relative;
+  box-sizing: border-box;
+  animation: rotation 1s linear infinite;
+}
+.loader::after {
+  content: '';
+  box-sizing: border-box;
+  position: absolute;
+  left: 50%;
+  top: 50%;
+  transform: translate(-50%, -50%);
+  width: 56px;
+  height: 56px;
+  border-radius: 50%;
+  border: 3px solid transparent;
+  border-bottom-color: #2d2d2d;
+}
+
+@keyframes rotation {
+  0% {
+    transform: rotate(0deg);
+  }
+  100% {
+    transform: rotate(360deg);
+  }
+}
@@ -0,0 +1,11 @@
+import React from 'react'
+import { createRoot } from 'react-dom/client'
+import App from './src/App'
+
+document.body.innerHTML = '<div id="app"></div>'
+
+const appElement = document.getElementById('app')
+if (appElement) {
+  const root = createRoot(appElement)
+  root.render(<App />)
+}