contract.html example is working with sync api

dist/ethereum.js

@@ -33,6 +33,9 @@ BigNumber.config({ ROUNDING_MODE: BigNumber.ROUND_DOWN });
 
 var ETH_PADDING = 32;
 
+/// method signature length in bytes
+var ETH_METHOD_SIGNATURE_LENGTH = 4;
+
 /// Finds first index of array element matching pattern
 /// @param array
 /// @param callback pattern
@@ -390,11 +393,10 @@ var outputParser = function (json) {
     return parser;
 };
 
-/// @param json abi for contract
 /// @param method name for which we want to get method signature
 /// @returns (promise) contract method signature for method with given name
-var methodSignature = function (json, name) {
-    return web3.sha3(web3.fromAscii(name));
+var methodSignature = function (name) {
+    return web3.sha3(web3.fromAscii(name)).slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2);
 };
 
 module.exports = {
@@ -432,8 +434,7 @@ module.exports = {
 var web3 = require('./web3'); // jshint ignore:line
 var abi = require('./abi');
 
-/// method signature length in bytes
-var ETH_METHOD_SIGNATURE_LENGTH = 4;
+
 
 /**
  * This method should be called when we want to call / transact some solidity method from javascript
@@ -469,29 +470,29 @@ var contract = function (address, desc) {
         var impl = function () {
             var params = Array.prototype.slice.call(arguments);
             var parsed = inputParser[displayName][typeName].apply(null, params);
-
-            var onSuccess = function (result) {
-                return outputParser[displayName][typeName](result);
-            };
+            var signature = abi.methodSignature(method.name);
 
             return {
                 call: function (extra) {
                     extra = extra || {};
                     extra.to = address;
-                    return abi.methodSignature(desc, method.name).then(function (signature) {
-                        extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed;
-                        return web3.eth.call(extra).then(onSuccess);
-                    });
+                    extra.data = signature + parsed;
+
+                    var result = web3.eth.call(extra);
+                    return outputParser[displayName][typeName](result);
                 },
                 transact: function (extra) {
                     extra = extra || {};
                     extra.to = address;
-                    return abi.methodSignature(desc, method.name).then(function (signature) {
-                        extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed;
-                        web3._currentContractAbi = desc;
-                        web3._currentContractAddress = address;
-                        return web3.eth.transact(extra).then(onSuccess);
-                    });
+                    extra.data = signature + parsed;
+
+                    /// it's used by natspec.js
+                    /// TODO: figure a better way to solve this
+                    web3._currentContractAbi = desc;
+                    web3._currentContractAddress = address;
+
+                    var result = web3.eth.transact(extra);
+                    return outputParser[displayName][typeName](result);
                 }
             };
         };
@@ -623,7 +624,7 @@ module.exports = Filter;
 
 var HttpSyncProvider = function (host) {
     this.handlers = [];
-    this.host = host;
+    this.host = host || 'http://localhost:8080';
 };
 
 /// Transforms inner message to proper jsonrpc object

example/balance.html

@@ -14,17 +14,15 @@
         var coinbase = web3.eth.coinbase;
         var originalBalance = 0;
 
-        web3.eth.balanceAt(coinbase).then(function (balance) {
-            originalBalance = web3.toDecimal(balance);
-            document.getElementById('original').innerText = 'original balance: ' + originalBalance + '    watching...';
-        });
+        var balance = web3.eth.balanceAt(coinbase);
+        var originalBalance = web3.toDecimal(balance);
+        document.getElementById('original').innerText = 'original balance: ' + originalBalance + '    watching...';
 
         web3.eth.watch({altered: coinbase}).changed(function() {
-            web3.eth.balanceAt(coinbase).then(function (balance) {
-                var currentBalance = web3.toDecimal(balance);
-                document.getElementById("current").innerText = 'current: ' + currentBalance;
-                document.getElementById("diff").innerText = 'diff:    ' + (currentBalance - originalBalance);
-            });
+            balance = web3.eth.balanceAt(coinbase)
+            var currentBalance = web3.toDecimal(balance);
+            document.getElementById("current").innerText = 'current: ' + currentBalance;
+            document.getElementById("diff").innerText = 'diff:    ' + (currentBalance - originalBalance);
         });
     }
 

example/contract.html

@@ -8,7 +8,7 @@
 <script type="text/javascript">
 
     var web3 = require('web3');
-    web3.setProvider(new web3.providers.AutoProvider());
+    web3.setProvider(new web3.providers.HttpSyncProvider());
 
     // solidity source code
     var source = "" + 
@@ -43,10 +43,9 @@
         document.getElementById('source').innerText = source;
 
         // create contract
-        web3.eth.transact({code: web3.eth.solidity(source)}).then(function (address) {
-            contract = web3.eth.contract(address, desc);
-            document.getElementById('call').style.visibility = 'visible';
-        });
+        var address = web3.eth.transact({code: web3.eth.solidity(source)});
+        contract = web3.eth.contract(address, desc);
+        document.getElementById('call').style.visibility = 'visible';
     }
 
     function callExampleContract() {
@@ -54,9 +53,8 @@
         var param = parseInt(document.getElementById('value').value);
 
         // call the contract
-        contract.multiply(param).call().then(function(res) {
-            document.getElementById('result').innerText = res[0];
-        });
+        var res = contract.multiply(param).call();
+        document.getElementById('result').innerText = res[0];
     }
 
 </script>

lib/abi.js

@@ -32,6 +32,9 @@ BigNumber.config({ ROUNDING_MODE: BigNumber.ROUND_DOWN });
 
 var ETH_PADDING = 32;
 
+/// method signature length in bytes
+var ETH_METHOD_SIGNATURE_LENGTH = 4;
+
 /// Finds first index of array element matching pattern
 /// @param array
 /// @param callback pattern
@@ -389,11 +392,10 @@ var outputParser = function (json) {
     return parser;
 };
 
-/// @param json abi for contract
 /// @param method name for which we want to get method signature
 /// @returns (promise) contract method signature for method with given name
-var methodSignature = function (json, name) {
-    return web3.sha3(web3.fromAscii(name));
+var methodSignature = function (name) {
+    return web3.sha3(web3.fromAscii(name)).slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2);
 };
 
 module.exports = {

lib/contract.js

@@ -23,8 +23,7 @@
 var web3 = require('./web3'); // jshint ignore:line
 var abi = require('./abi');
 
-/// method signature length in bytes
-var ETH_METHOD_SIGNATURE_LENGTH = 4;
+
 
 /**
  * This method should be called when we want to call / transact some solidity method from javascript
@@ -60,29 +59,29 @@ var contract = function (address, desc) {
         var impl = function () {
             var params = Array.prototype.slice.call(arguments);
             var parsed = inputParser[displayName][typeName].apply(null, params);
-
-            var onSuccess = function (result) {
-                return outputParser[displayName][typeName](result);
-            };
+            var signature = abi.methodSignature(method.name);
 
             return {
                 call: function (extra) {
                     extra = extra || {};
                     extra.to = address;
-                    return abi.methodSignature(desc, method.name).then(function (signature) {
-                        extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed;
-                        return web3.eth.call(extra).then(onSuccess);
-                    });
+                    extra.data = signature + parsed;
+
+                    var result = web3.eth.call(extra);
+                    return outputParser[displayName][typeName](result);
                 },
                 transact: function (extra) {
                     extra = extra || {};
                     extra.to = address;
-                    return abi.methodSignature(desc, method.name).then(function (signature) {
-                        extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed;
-                        web3._currentContractAbi = desc;
-                        web3._currentContractAddress = address;
-                        return web3.eth.transact(extra).then(onSuccess);
-                    });
+                    extra.data = signature + parsed;
+
+                    /// it's used by natspec.js
+                    /// TODO: figure a better way to solve this
+                    web3._currentContractAbi = desc;
+                    web3._currentContractAddress = address;
+
+                    var result = web3.eth.transact(extra);
+                    return outputParser[displayName][typeName](result);
                 }
             };
         };

lib/httpsync.js

@@ -23,7 +23,7 @@
 
 var HttpSyncProvider = function (host) {
     this.handlers = [];
-    this.host = host;
+    this.host = host || 'http://localhost:8080';
 };
 
 /// Transforms inner message to proper jsonrpc object