Adding arrow key navigation

diff --git a/src/gonvert_qt.py b/src/gonvert_qt.py
index 5949df6..76613f3 100755 (executable)
--- a/src/gonvert_qt.py
+++ b/src/gonvert_qt.py
@@ -54,7 +54,6 @@ class Gonvert(object):
 
        # @todo Favorites
        # @bug Fix the resurrecting window problem
-       # @todo Unit conversion window: focus always on input, arrows switch units
 
        _DATA_PATHS = [
                os.path.dirname(__file__),
@@ -623,6 +622,7 @@ class UnitModel(QtCore.QAbstractItemModel):
                        return len(self._children)
 
        def get_unit(self, index):
+               assert 0 <= index
                return self._children[index]
 
        def index_unit(self, unitName):
@@ -732,6 +732,16 @@ class UnitWindow(object):
 
                self._sortByValueAction.setChecked(True)
 
+               self._previousUnitAction = QtGui.QAction(None)
+               self._previousUnitAction.setText("Previous Unit")
+               self._previousUnitAction.setShortcut(QtGui.QKeySequence("Up"))
+               self._previousUnitAction.triggered.connect(self._on_previous_unit)
+
+               self._nextUnitAction = QtGui.QAction(None)
+               self._nextUnitAction.setText("Next Unit")
+               self._nextUnitAction.setShortcut(QtGui.QKeySequence("Down"))
+               self._nextUnitAction.triggered.connect(self._on_next_unit)
+
                self._closeWindowAction = QtGui.QAction(None)
                self._closeWindowAction.setText("Close Window")
                self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
@@ -756,6 +766,8 @@ class UnitWindow(object):
                self._sortByUnitAction.triggered.connect(self._on_sort_by_unit)
 
                self._window.addAction(self._app.logAction)
+               self._window.addAction(self._nextUnitAction)
+               self._window.addAction(self._previousUnitAction)
 
                self._window.show()
 
@@ -773,6 +785,14 @@ class UnitWindow(object):
                self._select_unit(index)
 
        @misc_utils.log_exception(_moduleLogger)
+       def _on_previous_unit(self, checked = True):
+               self._select_unit(self._selectedIndex - 1)
+
+       @misc_utils.log_exception(_moduleLogger)
+       def _on_next_unit(self, checked = True):
+               self._select_unit(self._selectedIndex + 1)
+
+       @misc_utils.log_exception(_moduleLogger)
        def _on_close_window(self, checked = True):
                self.close()