def post(self):
session_id = self.get_argument('session_id', None)
if not session_id:
self.write(dict(success=False, error='No session_id'))
return
vd._set_server_session(session_id)
try:
data = json.loads(self.request.body)
except:
self.write(
dict(success=False, error='Missing self.request.body'))
return
try:
obj = json.loads(self.request.body)
except:
self.write(
dict(success=False, error='Unable to parse body'))
return
if 'callback_id' not in obj:
self.write(dict(success=False,
error='Missing callback_id'))
return
callback_id = obj['callback_id']
args = obj['args']
kwargs = obj['kwargs']
try:
retval = vd.invoke_callback(callback_id,
argument_list=args,
kwargs=kwargs)
except:
traceback.print_exc()
self.write(
dict(success=False, error='Error invoking callback.'))
return
self.write(dict(success=True, retval=retval))
def get(self):
session_id = self.get_argument('session_id', None)
if not session_id:
self.write('//no session_id')
return
vd._set_server_session(session_id)
js_list = []
while True:
js = vd._take_javascript_to_execute()
if js is None:
break
js_list.append(js)
if len(js_list) > 0:
self.write('\n\n'.join(js_list))
else:
self.write('(function() {/*nothing to do --*/})')
def get(self):
session_id = self.get_argument('session_id', None)
if not session_id:
self.write('//no session_id')
return
delay = 1
num_delays = 10
for _ in range(num_delays):
vd._set_server_session(session_id)
js_list = []
while True:
js = vd._take_javascript_to_execute()
if js is None:
break
js_list.append(js)
if len(js_list) > 0:
self.write('\n\n'.join(js_list))
break
yield async_sleep(delay)
self.write("(function() {/*nothing to do*/})")
def get(self):
session_id = ''.join(
random.choices(string.ascii_uppercase + string.digits,
k=10))
server_self._sessions[session_id] = dict(root=None)
vd._set_server_session(session_id)
root = server_self._vdomr_app.createSession()
server_self._sessions[session_id]['root'] = root
html = '''
<head>
<script>
function post_json(url,obj,callback) {
xhr = new XMLHttpRequest();
xhr.open("POST", url, true);
xhr.setRequestHeader("Content-type", "application/json");
xhr.onreadystatechange = function () {
if (xhr.readyState == 4 && xhr.status == 200) {
var resp;
try {
resp=JSON.parse(xhr.responseText);
}
catch(err) {
callback('Problem parsing json response.');
return;
}
if (resp.success) {
callback(null,resp);
}
else {
callback('Error: '+resp.error);
}
}
}
var data = JSON.stringify(obj);
xhr.send(data);
}
function inject_script(url,callback) {
var head = document.getElementsByTagName('head')[0];
var script = document.createElement('script');
script.type = 'text/javascript';
script.onload = function() {
callback();
}
script.src = url;
head.appendChild(script);
}
</script>
<script>
window.vdomr_invokeFunction=function(callback_id,args,kwargs) {
// console.log('vdomr_invokeFunction',callback_id,args,kwargs);
// document.getElementById('overlay').style.visibility='visible'
post_json('/{vdomr_token_str}invoke/?session_id={session_id}',{callback_id:callback_id,args:args,kwargs:kwargs},function(err,resp) {
// document.getElementById('overlay').style.visibility='hidden'
if (err) {
console.error(err);
return;
}
// console.log('ok',resp);
inject_script('/{vdomr_token_str}script_immediate.js?session_id={session_id}',function() {
});
});
}
{init_js}
</script>
<script>
function get_script() {
inject_script('/{vdomr_token_str}script.js?session_id={session_id}',function() {
setTimeout(function() {
get_script();
},0);
});
}
setTimeout(function() {
get_script();
},100);
</script>
<style>
.overlay {
background-color: rgba(1, 1, 1, 0.2);
color:white;
font-size:24px;
bottom: 0;
left: 0;
position: fixed;
right: 0;
top: 0;
text-align: center;
padding: 40px;
}
</style>
</head>
<html>
<div id=overlay class=overlay style="visibility:hidden">Please wait...</div>
{content}
</html>
'''
html = root._repr_html_().join(html.split('{content}'))
html = session_id.join(html.split('{session_id}'))
html = html.replace('{init_js}', _get_init_javascript())
if server_self._token:
html = html.replace('{vdomr_token_str}',
server_self._token + '/')
else:
html = html.replace('{vdomr_token_str}', '')
self.write(html)