1 files changed, 75 insertions, 0 deletions
diff --git a/ui/filter.go b/ui/filter.go
new file mode 100644
index 000000000..ad29abbc5
--- /dev/null
+++ b/ui/filter.go
@@ -0,0 +1,75 @@
+package ui
+
+import (
+	"github.com/ethereum/go-ethereum/ethchain"
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+func NewFilterFromMap(object map[string]interface{}, eth ethchain.EthManager) *ethchain.Filter {
+	filter := ethchain.NewFilter(eth)
+
+	if object["earliest"] != nil {
+		val := ethutil.NewValue(object["earliest"])
+		filter.SetEarliestBlock(val.Int())
+	}
+
+	if object["latest"] != nil {
+		val := ethutil.NewValue(object["latest"])
+		filter.SetLatestBlock(val.Int())
+	}
+
+	if object["to"] != nil {
+		val := ethutil.NewValue(object["to"])
+		filter.AddTo(ethutil.Hex2Bytes(val.Str()))
+	}
+
+	if object["from"] != nil {
+		val := ethutil.NewValue(object["from"])
+		filter.AddFrom(ethutil.Hex2Bytes(val.Str()))
+	}
+
+	if object["max"] != nil {
+		val := ethutil.NewValue(object["max"])
+		filter.SetMax(int(val.Uint()))
+	}
+
+	if object["skip"] != nil {
+		val := ethutil.NewValue(object["skip"])
+		filter.SetSkip(int(val.Uint()))
+	}
+
+	if object["altered"] != nil {
+		filter.Altered = makeAltered(object["altered"])
+	}
+
+	return filter
+}
+
+// Conversion methodn
+func mapToAccountChange(m map[string]interface{}) (d ethchain.AccountChange) {
+	if str, ok := m["id"].(string); ok {
+		d.Address = ethutil.Hex2Bytes(str)
+	}
+
+	if str, ok := m["at"].(string); ok {
+		d.StateAddress = ethutil.Hex2Bytes(str)
+	}
+
+	return
+}
+
+// data can come in in the following formats:
+// ["aabbccdd", {id: "ccddee", at: "11223344"}], "aabbcc", {id: "ccddee", at: "1122"}
+func makeAltered(v interface{}) (d []ethchain.AccountChange) {
+	if str, ok := v.(string); ok {
+		d = append(d, ethchain.AccountChange{ethutil.Hex2Bytes(str), nil})
+	} else if obj, ok := v.(map[string]interface{}); ok {
+		d = append(d, mapToAccountChange(obj))
+	} else if slice, ok := v.([]interface{}); ok {
+		for _, item := range slice {
+			d = append(d, makeAltered(item)...)
+		}
+	}
+
+	return
+}