Added history to lite view.

lib/history_widget.py

@@ -0,0 +1,19 @@
+from PyQt4.QtGui import *
+from i18n import _
+
+class HistoryWidget(QTreeWidget):
+
+    def __init__(self, parent=None):
+        QTreeWidget.__init__(self, parent)
+        self.setColumnCount(2)
+        self.setHeaderLabels([_("Amount"), _("To / From")])
+        self.setIndentation(0)
+
+    def append(self, address, amount):
+        if amount >= 0:
+            display_amount = "+%s" % amount
+        else:
+            display_amount = "-%s" % (-amount)
+        item = QTreeWidgetItem([display_amount, address])
+        self.insertTopLevelItem(0, item)
+