def __init__(self, filename): super(AstApp, self).__init__() self.ast_file = filename self.ast = ASTObserver() self.selected = None
class AstApp(App):
def __init__(self, filename):
super(AstApp, self).__init__()
self.ast_file = filename
self.ast = ASTObserver()
self.selected = None
def build(self):
root = Builder.load_string(root_kv.format(self.ast_file))
st = root.ids.source_text
self.ast.bind(source=st.setter('text'))
st.bind(text=self.ast.setter('source'))
self.ast.bind(on_generate=lambda _, tree: buildtreeview(tree, root.ids.treeview))
self.ast.bind(on_generate=lambda *_: setattr(self, 'output', self.ast.compile()))
self.ast.bind(on_compile=lambda _, output: setattr(root.ids.output_text, 'text', output))
self.ast.bind(on_compile=self.save_outfile)
self.ast.bind(on_tree_changed=self.refresh)
Clock.schedule_once(self.load)
root.ids.treeview.bind(selected_node=self.update_selection)
root.ids.btn_movedown.bind(on_press=lambda *_: self.move_node(1))
root.ids.btn_moveup.bind(on_press=lambda *_: self.move_node(-1))
root.ids.btn_addprop.bind(on_press=self.add_property)
root.ids.btn_removenode.bind(on_press=self.remove_node)
return root
def refresh(self, *_):
self.selected = None
buildtreeview(self.ast.tree, self.root.ids.treeview)
self.ast.compile()
def move_node(self, dir):
if self.selected:
tree = self.selected.tree_node
if tree.parent:
parent = tree.parent
count = parent.getChildCount()
if count > 1:
index = tree.childIndex
destindex = index + dir
if destindex < 0:
destindex = count - 1
elif destindex >= count:
destindex = 0
self.ast.shift_node(tree, destindex)
def add_property(self, *_):
if self.selected:
try:
key = 'prop'
value = "'val'"
self.ast.widget_add_property(self.selected.tree_node, key, value)
except ValueError, e:
print str(e)
