Auto update gas estimate when to changes.

1 files changed, 14 insertions, 0 deletions

diff --git a/app/scripts/metamask-controller.js b/app/scripts/metamask-controller.js
index 1b1d26886..d3d15e737 100644
--- a/app/scripts/metamask-controller.js
+++ b/app/scripts/metamask-controller.js
@@ -383,6 +383,8 @@ module.exports = class MetamaskController extends EventEmitter {
       updateAndApproveTransaction: nodeify(txController.updateAndApproveTransaction, txController),
       retryTransaction: nodeify(this.retryTransaction, this),
       getFilteredTxList: nodeify(txController.getFilteredTxList, txController),
+      isNonceTaken: nodeify(txController.isNonceTaken, txController),
+      estimateGas: nodeify(this.estimateGas, this),
 
       // messageManager
       signMessage: nodeify(this.signMessage, this),
@@ -921,6 +923,18 @@ module.exports = class MetamaskController extends EventEmitter {
     return state
   }
 
+  estimateGas (estimateGasParams) {
+    return new Promise((resolve, reject) => {
+      return this.txController.txGasUtil.query.estimateGas(estimateGasParams, (err, res) => {
+        if (err) {
+          return reject(err)
+        }
+
+        return resolve(res)
+      })
+    })
+  }
+
 //=============================================================================
 // PASSWORD MANAGEMENT
 //=============================================================================