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main_window.py
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main_window.py
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from tkinter import *
from tkinter import ttk
import uuid
import requests
import json
import threading
from popup_window import PopupWindow
from events import EventsManager, AddEvent, DeleteEvent, EditEvent
server = 'https://treedb.herokuapp.com/'
# server = 'http://127.0.0.1:8080/'
def run_in_thread(fn):
def run(*k, **kw):
thread = threading.Thread(target=fn, args=k, kwargs=kw)
thread.start()
return thread
return run
def get_all_tree():
r = requests.get(server + 'tree')
return json.loads(r.text)['tree']
def get_node(node_id):
r = requests.get(server + 'tree/' + str(node_id))
return json.loads(r.text)
def update(tree):
r = requests.post(server + 'tree/update/', json=tree)
return json.loads(r.text)['tree']
def update_events(events):
r = requests.post(server + 'tree/update/events/', json=events)
return json.loads(r.text)['nodes']
class MainWindow(object):
db_tree_data = list()
cached_tree_data = list()
entry_window = object
def __init__(self, root):
self.events_manager = EventsManager()
self.root = root
# Base layer
self.cachedTreeFrame = ttk.Frame(root, borderwidth=2, relief=GROOVE)
self.cachedTreeFrame.grid(row=0, column=0, sticky=W+N+E+S)
self.dbTreeFrame = ttk.Frame(root, borderwidth=2, relief=GROOVE)
self.dbTreeFrame.grid(row=0, column=2, sticky=N+W+E+S)
self.buttonsFrame = ttk.Frame(root, borderwidth=2)
self.buttonsFrame.grid(row=1, column=0, sticky=W)
# Buttons
self.buttonsFrame.addButton = ttk.Button(self.buttonsFrame, text='+', command=self.add_node)
self.buttonsFrame.addButton.grid(row=1, column=1)
self.buttonsFrame.getButton = ttk.Button(self.root, text='<<<', command=self.get_node_from_db)
self.buttonsFrame.getButton.grid(row=0, column=1)
self.buttonsFrame.deleteButton = ttk.Button(self.buttonsFrame, text='-', command=self.delete_node)
self.buttonsFrame.deleteButton.grid(row=1, column=2)
self.buttonsFrame.resetButton = ttk.Button(self.buttonsFrame, text='Reset', command=self.reset)
self.buttonsFrame.resetButton.grid(row=2, column=3)
self.buttonsFrame.editButton = ttk.Button(self.buttonsFrame, text='Edit', command=self.edit)
self.buttonsFrame.editButton.grid(row=1, column=3)
self.buttonsFrame.applyButton = ttk.Button(self.buttonsFrame, text='Apply', command=self.apply)
self.buttonsFrame.applyButton.grid(row=2, column=1)
self.buttonsFrame.applyEventsButton = ttk.Button(self.buttonsFrame, text='Apply events', command=self.apply_events)
# self.buttonsFrame.applyEventsButton.grid(row=3, column=1)
# Trees
self.cachedTreeFrame.cachedTree = ttk.Treeview(self.cachedTreeFrame)
self.cachedTreeFrame.cachedTree.heading('#0', text='Cached tree')
self.cachedTreeFrame.cachedTree.pack(fill=BOTH, expand=1)
self.dbTreeFrame.dbTree = ttk.Treeview(self.dbTreeFrame)
self.dbTreeFrame.dbTree.heading('#0', text='Database tree')
self.dbTreeFrame.dbTree.pack(fill=BOTH, expand=1)
# Initialize
self.root.after(1000, self.load_db_data)
def popup(self, node_name):
self.entry_window = PopupWindow(self.root, node_name)
self.buttonsFrame.addButton["state"] = "disabled"
self.root.wait_window(self.entry_window.top)
self.buttonsFrame.addButton["state"] = "normal"
@run_in_thread
def load_db_data(self):
requests.get(server + 'tree/clear')
with open('testdb.json') as data_file:
data = json.load(data_file)
update([data])
self.db_tree_data = get_all_tree()
self.redraw_db()
def _redraw(self, subtree, widget_tree):
"""
Clear tree and render
:param subtree:
:param widget_tree:
:return:
"""
for i in widget_tree.get_children():
widget_tree.delete(i)
self.render_tree(subtree, widget_tree)
def redraw_cached(self):
self._redraw(self.cached_tree_data, self.cachedTreeFrame.cachedTree)
def redraw_db(self):
self._redraw(self.db_tree_data, self.dbTreeFrame.dbTree)
def render_tree(self, subtree, widget_tree, root_node_uuid=""):
"""
Render tree
:param subtree:
:param widget_tree:
:type widget_tree: ttk.Treeview
:param root_node_uuid:
:return:
"""
for child in subtree:
if 'uuid' not in child:
child['uuid'] = str(uuid.uuid4())
node = child['node']
tag = 'normal' if node['deleted'] else 'deleted'
if child['node']['id'] is None:
child['node']['id'] = child['uuid']
child['new'] = True
widget_tree.insert(
root_node_uuid,
0,
child["uuid"],
text=node['name'], # + " - " + child['uuid'] + " - " + str(child['node']['id']),
values=child["uuid"],
open=True,
tag=tag)
widget_tree.tag_configure('deleted', font='Times 10 normal')
widget_tree.tag_configure('normal', font='Times 10 italic')
widget_tree = self.render_tree(child['children'], widget_tree, root_node_uuid=child["uuid"])
return widget_tree
def append_to_cache(self, node):
rnid = node['root']
nid = node['id']
children = list()
to_delete = list()
for child in self.cached_tree_data:
if child['node']['root'] == nid and child['node']['root'] is not None:
to_delete.append(child)
children.append(child)
for ditem in to_delete:
self.cached_tree_data.pop(self.cached_tree_data.index(ditem))
if nid is not None and self.find_node_data_by_id(nid, self.cached_tree_data) is not None:
return
cached_root_node = self.find_node_data_by_id(rnid, self.cached_tree_data)
if cached_root_node:
cached_root_node['children'].append({'node': node, 'children': children})
if cached_root_node['node']['deleted'] and not node['deleted']:
self.delete_subtree({'node': node, 'children': children})
else:
self.cached_tree_data.append({'node': node, 'children': children})
self.redraw_cached()
def find_node_data_by_uuid(self, node_uuid, subtree):
res = None
for child in subtree:
if child['uuid'] == node_uuid:
res = child
break
else:
res = self.find_node_data_by_uuid(node_uuid, child['children'])
if res is not None:
break
return res
def find_node_data_by_id(self, node_id, subtree):
res = None
for child in subtree:
if child['node']['id'] == node_id:
res = child
break
else:
res = self.find_node_data_by_id(node_id, child['children'])
if res is not None:
break
return res
def node_exists(self, node_id, subtree):
"""
Check if node exists in tree
:param node_id:
:param subtree:
:return:
"""
return False if self.find_node_data_by_id(node_id, subtree) is None else True
def delete_subtree(self, node):
node['node']['deleted'] = True
res = dict()
res['node'] = node['node']
res['children'] = list()
for child in node['children']:
if not child['node']['deleted']:
res['children'].append(self.delete_subtree(child))
return res
def add_node(self):
cache_selected_items = self.cachedTreeFrame.cachedTree.selection()
if len(cache_selected_items) != 0:
self.popup('')
if len(self.entry_window.value) == 0:
return
item = self.cachedTreeFrame.cachedTree.item(cache_selected_items[0])
node_name = self.entry_window.value
node_id = str(uuid.uuid4())
root_node_data = self.find_node_data_by_uuid(item['values'][0], self.cached_tree_data)
self.events_manager.append_event(AddEvent(node_id, root_node_data['node']['id'], node_name))
if not root_node_data['node']['deleted']:
node_data = {'name': node_name, 'root': root_node_data['node']['id'], 'id': None, 'deleted': False}
self.append_to_cache(node_data)
@run_in_thread
def get_node_from_db(self):
db_selected_items = self.dbTreeFrame.dbTree.selection()
if len(db_selected_items) != 0:
item = self.dbTreeFrame.dbTree.item(db_selected_items[0])
db_node_data = self.find_node_data_by_uuid(item['values'][0], self.db_tree_data)['node']
if not db_node_data['deleted']:
nid = db_node_data['id']
if not self.node_exists(nid, self.cached_tree_data):
res_node = get_node(nid)
self.append_to_cache(res_node)
def delete_node(self):
cache_selected_items = self.cachedTreeFrame.cachedTree.selection()
if len(cache_selected_items) == 0:
return
item = self.cachedTreeFrame.cachedTree.item(cache_selected_items[0])
node_data = self.find_node_data_by_uuid(item['values'][0], self.cached_tree_data)
self.events_manager.append_event(DeleteEvent(node_data['node']['id']))
if not node_data['node']['deleted']:
self.delete_subtree(node_data)
self.redraw_cached()
def reset(self):
self.load_db_data()
self.cached_tree_data = list()
self.redraw_cached()
def edit(self):
cache_selected_items = self.cachedTreeFrame.cachedTree.selection()
if len(cache_selected_items) != 0:
item = self.cachedTreeFrame.cachedTree.item(cache_selected_items[0])
node_data = self.find_node_data_by_uuid(item['values'][0], self.cached_tree_data)
if node_data['node']['deleted'] is True:
return
self.popup(item['text'])
if len(self.entry_window.value) == 0:
return
node_name = self.entry_window.value
node_data['node']['name'] = node_name
self.events_manager.append_event(EditEvent(node_data['node']['id'], node_name))
self.redraw_cached()
def _refill_new(self, children):
for child in children:
if 'new' in child:
child['node']['id'] = None
child['node']['root'] = None
self._refill_new(child['children'])
@run_in_thread
def apply(self):
self._refill_new(self.cached_tree_data)
self.cached_tree_data = update(self.cached_tree_data)
self.db_tree_data = get_all_tree()
self.redraw_db()
self.redraw_cached()
@run_in_thread
def apply_events(self):
events = self.events_manager.serialize_events()
update_events(events)
self.db_tree_data = get_all_tree()
self.redraw_db()
self.redraw_cached()
self.events_manager.clear()