add purge to tx prosposals

js/models/core/TxProposal.js

@@ -65,6 +65,17 @@ TxProposal.prototype._check = function() {
   }
 };
 
+TxProposal.prototype.rejectCount = function() {
+  return Object.keys(this.rejectedBy);
+};
+
+TxProposal.prototype.isPending = function(maxRejectCount) {
+  if (this.rejectCount() < maxRejectCount || p.sentTxid)
+    return false;
+
+  return true;
+};
+ 
 
 TxProposal.prototype._updateSignedBy = function() {
   this._inputSignatures = [];

js/models/core/TxProposals.js

@@ -36,10 +36,25 @@ TxProposals.fromObj = function(o, forceOpts) {
   return ret;
 };
 
+TxProposals.prototype.length = function() {
+  return Object.keys(this.txps).length;
+};
+
 TxProposals.prototype.getNtxids = function() {
   return Object.keys(this.txps);
 };
 
+TxProposals.prototype.deleteAll = function() {
+  this.txps = {};
+};
+
+TxProposals.prototype.deletePending = function(maxRejectCount) {
+  for (var ntxid in this.txps) {
+    if (this.txps[ntxid].isPending(maxRejectCount))
+      delete this.txps[ntxid];
+  };
+};
+
 TxProposals.prototype.toObj = function() {
   var ret = [];
   for (var id in this.txps) {
@@ -153,7 +168,8 @@ TxProposals.prototype.getUsedUnspent = function(maxRejectCount) {
   for (var i in this.txps) {
     var u = this.txps[i].builder.getSelectedUnspent();
     var p = this.getTxProposal(i);
-    if (p.rejectCount > maxRejectCount || p.sentTxid)
+
+    if (!p.isPending(maxRejectCount))
       continue;
 
     for (var j in u) {

js/models/core/Wallet.js

@@ -706,6 +706,18 @@ Wallet.prototype.getTxProposals = function() {
   return ret;
 };
 
+Wallet.prototype.purgeTxProposals = function(deleteAll) {
+  var m = this.txProposals.length();
+
+  if (deleteAll) {
+    this.txProposals.deleteAll();
+  } else {
+    this.txProposals.deletePending(this.maxRejectCount());
+  }
+
+  var n = this.txProposals.length();
+  return m-n;
+};
 
 Wallet.prototype.reject = function(ntxid) {
   var txp = this.txProposals.reject(ntxid, this.getMyCopayerId());
@@ -1484,6 +1496,17 @@ Wallet.prototype.getBalance = function(cb) {
   });
 };
 
+
+// See 
+// https://github.com/bitpay/copay/issues/1056
+//
+// maxRejectCount should equal requiredCopayers
+// strictly. 
+//
+Wallet.prototype.maxRejectCount = function(cb) {
+  return this.totalCopayers - this.requiredCopayers;
+};
+
 Wallet.prototype.getUnspent = function(cb) {
   var self = this;
   this.blockchain.getUnspent(this.getAddressesStr(), function(err, unspentList) {
@@ -1493,8 +1516,7 @@ Wallet.prototype.getUnspent = function(cb) {
     }
 
     var safeUnspendList = [];
-    var maxRejectCount = self.totalCopayers - self.requiredCopayers;
-    var uu = self.txProposals.getUsedUnspent(maxRejectCount);
+    var uu = self.txProposals.getUsedUnspent(self.maxRejectCount());
 
     for (var i in unspentList) {
       var u = unspentList[i];