feat: adds send max

src/css/main.css

@@ -938,14 +938,20 @@ button {
     margin-top: 20px;
 }
 
-#sendBalance {
+#sendBalance{
     position: absolute;
     right: 0;
     top: 0;
     color: #999999;
     font-size: 14px;
 }
 
+#sendBalance:hover  {
+    text-decoration: underline;
+    text-underline-offset: 4px;
+    cursor: pointer;
+}
+
 
 #sendConfirm .addr, #signConfirm .addr {
     font-family: monospace;
@@ -1272,4 +1278,4 @@ button {
     -webkit-transform: rotate(45deg);
     -ms-transform: rotate(45deg);
     transform: rotate(45deg);
-}
+}

src/js/Controller.js

@@ -487,7 +487,7 @@ class Controller {
      * @param keyPair    {nacl.KeyPair | null} null if estimates fee, keyPair if real sending
      * @return Promise<{{send: () => Promise<*>, getQuery: () => Promise<Cell>, estimateFee: () => Promise<*>}}> transfer object
      */
-    async sign(request, keyPair) {
+    async sign(request, keyPair, sendAll) {
         /** @type {number} */
         const seqno = await this.getMySeqno();
 
@@ -503,7 +503,7 @@ class Controller {
                     toAddress: message.toAddress,
                     amount: message.amount,
                     payload: message.comment,
-                    sendMode: 3,
+                    sendMode: sendAll ? 128 : 3,
                     stateInit: message.stateInit
                 }
             })
@@ -881,9 +881,10 @@ class Controller {
 
     /**
      * @param request {{expireAt?: number, messages: [{amount: BN, toAddress: string, comment?: string | Uint8Array | Cell, needEncryptComment: boolean, stateInit?: Cell}]}}
+     * @param sendAll {boolean}
      * @return {Promise<BN>} total fees in nanotons
      */
-    async getFees(request) {
+    async getFees(request, sendALl) {
         /** @type {{expireAt?: number, messages: [{amount: BN, toAddress: string, comment?: string | Uint8Array | Cell, needEncryptComment: boolean, stateInit?: Cell}]}} */
         const tempRequest = {
             expireAt: request.expireAt,
@@ -908,7 +909,7 @@ class Controller {
             });
         }
 
-        const query = await this.sign(tempRequest, null);
+        const query = await this.sign(tempRequest, null, sendALl);
         const all_fees = await query.estimateFee();
         const fees = all_fees.source_fees;
         const in_fwd_fee = new BN(fees.in_fwd_fee); // External processing fee
@@ -1043,16 +1044,17 @@ class Controller {
         }
 
         let fee;
+        let sendAll = this.balance.eq(totalAmount)
 
         try {
-            fee = await this.getFees(request);
+            fee = await this.getFees(request, sendAll);
         } catch (e) {
             console.error(e);
             this.sendToView('sendCheckFailed', {message: 'API request error'});
             return null;
         }
 
-        if (this.balance.sub(fee).lt(totalAmount)) {
+        if (!sendAll && this.balance.sub(fee).lt(totalAmount)) {
             this.sendToView('sendCheckCantPayFee', {fee});
             return null;
         }
@@ -1070,7 +1072,7 @@ class Controller {
                 fee: fee.toString()
             }, needQueue);
 
-            const sentBoc = await this.send(request, null, totalAmount);
+            const sentBoc = await this.send(request, null, totalAmount, sendAll);
 
             if (sentBoc) {
                 dAppPromise.resolve(sentBoc);
@@ -1093,7 +1095,7 @@ class Controller {
                 }
 
                 const privateKeyBase64 = await Controller.wordsToPrivateKey(words);
-                const sentBoc = await this.send(request, privateKeyBase64, totalAmount);
+                const sentBoc = await this.send(request, privateKeyBase64, totalAmount, sendAll);
 
                 this.onCancelAction = null;
 
@@ -1127,9 +1129,10 @@ class Controller {
      * @param request {{expireAt?: number, messages: [{amount: BN, toAddress: string, comment?: string | Uint8Array | Cell, needEncryptComment: boolean, stateInit?: Cell}]}}
      * @param privateKeyBase64 {string | null} null if Ledger
      * @param totalAmount {BN}
+     * @param sendAll {boolean}
      * @return  {Promise<Cell | null>} successfully sent BoC
      */
-    async send(request, privateKeyBase64, totalAmount) {
+    async send(request, privateKeyBase64, totalAmount, sendAll) {
         try {
             let query;
 
@@ -1152,6 +1155,10 @@ class Controller {
                     await this.createLedger((await storage.getItem('ledgerTransportType')) || 'hid');
                 }
 
+                if(sendAll) {
+                    message.sendMode = 128
+                } 
+
                 let addressFormat = 0;
 
                 const toAddress = new Address(message.toAddress);
@@ -1177,8 +1184,7 @@ class Controller {
             } else {
 
                 const keyPair = nacl.sign.keyPair.fromSeed(TonWeb.utils.base64ToBytes(privateKeyBase64));
-                query = await this.sign(request, keyPair);
-
+                query = await this.sign(request, keyPair, sendAll);
             }
 
             /** @type {Cell | null} */

src/js/view/View.js

@@ -374,6 +374,7 @@ class View {
         $('#transaction_closeBtn').addEventListener('click', () => this.closePopup());
 
         $('#connectLedger_cancelBtn').addEventListener('click', () => this.closePopup());
+        $('#sendBalance').addEventListener('click', () => this.setMaxAmount());
 
         $('#send_btn').addEventListener('click', (e) => {
             /** @type {string} */
@@ -1268,6 +1269,16 @@ class View {
             this.port.postMessage({method, params});
         }
     }
+    /**
+     * Set max amount to send input field
+     */
+    setMaxAmount(){
+        if(this.balance !== null) {
+            const input = $('#amountInput')
+            input.value = fromNano(this.balance.toString());
+            input.classList.remove('error');
+        }
+    }
 
     /**
      * Receive message from Controller.js