1 files changed, 66 insertions, 0 deletions
diff --git a/cmd/mist/assets/ext/filter.js b/cmd/mist/assets/ext/filter.js
new file mode 100644
index 000000000..f8529c54b
--- /dev/null
+++ b/cmd/mist/assets/ext/filter.js
@@ -0,0 +1,66 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
+var ethx = {
+    prototype: Object,
+
+    watch: function(options) {
+        return new Filter(options);
+    },
+
+    note: function() {
+        var args = Array.prototype.slice.call(arguments, 0);
+        var o = []
+        for(var i = 0; i < args.length; i++) {
+            o.push(args[i].toString())
+        }
+
+        eth.notef(o);
+    },
+};
+
+var Filter = function(options) {
+	this.callbacks = [];
+	this.options = options;
+
+	if(options === "chain") {
+		this.id = eth.newFilterString(options);
+	} else if(typeof options === "object") {
+		this.id = eth.newFilter(options);
+	}
+};
+
+Filter.prototype.changed = function(callback) {
+    this.callbacks.push(callback);
+
+	var self = this;
+	messages.connect(function(messages, id) {
+		if(id ==  self.id) {
+			for(var i = 0; i < self.callbacks.length; i++) {
+				self.callbacks[i].call(self, messages);
+			}
+		}
+	});
+};
+
+Filter.prototype.uninstall = function() {
+	eth.uninstallFilter(this.id)
+}
+
+Filter.prototype.messages = function() {
+	return eth.messages(this.id)
+}