cherryext/orun/js.py

206 lines
5.3 KiB
Python

import types
import json
AJAX_URL = '/ajax_callback'
js_manager = None
js_ajax = None
live_methods = {}
def _encoder(o):
if isinstance(o, JsObject):
return o._js
elif isinstance(o, JsNode):
return block(str(o))
elif isinstance(o, types.FunctionType) and js_ajax:
return function(js_ajax(o))
def encode(o):
if isinstance(o, JsNode):
return str(o)
elif isinstance(o, (list, tuple)):
return '[%s]' % ','.join([encode(i) for i in o])
else:
return json.dumps(o, default=_encoder)
# trick json serialize javascript block
class JsBlock(int):
def __new__(cls, *args, **kwargs):
obj = super(JsBlock, cls).__new__(cls, 0)
obj.code = args[0]
return obj
def __str__(cls):
return cls.code
class JsFunction(JsBlock):
def __str__(cls):
return 'function () { %s }' % cls.code
block = JsBlock
func = function = JsFunction
def write(code):
if js_manager:
js_manager.write(str(code))
def __lshift__(self, value):
print('test')
class JsManager(object):
def __init__(self):
self.output = []
def write(self, data):
self.output.append(data)
def __str__(self):
s = '\n'.join(output)
output = self.output[:]
return s
class JsNode(object):
def __init__(self, name='', parent=None):
if parent and parent.name:
self.name = parent.name + '.' + name
else:
self.name = name
def __getattr__(self, attr):
return JsNode(attr, self)
def __setattr__(self, attr, value):
if attr == 'name':
super(JsNode, self).__setattr__(attr, value)
else:
value = encode(value)
if self is client.var:
s = 'var %s = %s' % (attr, value)
else:
name = self.name + '.' if self.name else ''
s = '%s%s = %s' % (name, attr, value)
write(s)
def __add__(self, other):
return JsNode('%s + %s' % (encode(self), encode(other)))
def __sub__(self, other):
return JsNode('%s - %s' % (encode(self), encode(other)))
def __mul__(self, other):
return JsNode('%s * %s' % (encode(self), encode(other)))
def __truediv__(self, other):
return JsNode('%s / %s' % (encode(self), encode(other)))
def __call__(self, *args, **kwargs):
l = []
d = []
for arg in args:
l.append(encode(arg))
for k, v in kwargs.items():
d.append('%s=%s' % (k, encode(v)))
_args = []
if l:
_args.extend(l)
if d:
_args.extend(d)
s = '%s(%s)' % (self.name, ','.join(_args))
self.name = s
return self
def __str__(self):
return self.name
class JsClient(JsNode):
def __init__(self, name='', parent=None):
if parent and parent.name:
self.name = parent.name + '.' + name
else:
self.name = name
self.__dict__['var'] = JsNode('var')
def __lshift__(self, other):
write(other)
class JsObjectNode(JsNode):
def __call__(self, *args, **kwargs):
super(JsObjectNode, self).__call__(*args, **kwargs)
write(str(self))
class JsOutput(object):
def __init__(self, manager=True):
self.body = []
if manager:
js_manager = self
def __lshift__(self, other):
self.write(other)
def write(self, code):
self.body.append(code)
def __str__(self):
s = ';\n'.join(self.body)
return s
out = output = JsOutput
class JsObject(object):
def __init__(self, *args, **kwargs):
self._loading = True
self._id = 'js_%s' % id(self)
self._create()
self._js = kwargs
self._loading = False
def _create(self):
pass
def _update(self, config):
self._js.update(config)
def __getattr__(self, attr):
if not self.__dict__.get('_loading', True):
if attr in self._js:
return self._js.get(attr)
else:
return JsObjectNode(attr, JsNode(self._id))
def __setattr__(self, attr, value):
if '_js' in self.__dict__ and not attr in self.__dict__:
self[attr] = value
else:
super(JsObject, self).__setattr__(attr, value)
def __setitem__(self, attr, value):
if not self._loading:
write('%s.%s = %s' % (self._id, attr, json.dumps(value)))
self._js[attr] = value
def alert(msg):
write(client.alert(msg))
def load(filename, klass=JsObject):
return klass(**json.load(open(filename)))
cli = client = JsClient()
if __name__ == '__main__':
class MyManager(JsManager):
def write(self, code):
print(code)
js_manager = MyManager()
write(client.console.log('test'))
n = JsNode('console')
write(n.print(n.log({'id': 'item id'})))
client.var.x = 1
client.x.y = client.window.open('http://www.google.com')
client << client.x.y()([client.x])
client << client.Ext.create('window', {'left': 10})
client << client.x
# test block
print(json.dumps({'click': call}, default=_encoder))