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Added static option to HTML component #776

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Added static option to HTML component #776

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16 changes: 13 additions & 3 deletions nengo_gui/components/htmlview.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,13 +6,22 @@
class HTMLView(Component):
"""Arbitrary HTML display taking input from a Node

See nengo_gui/examples/basics/html.py for example usage"""
See nengo_gui/examples/basics/html.py for example usage.

The HTML is given by a string, stored in the attribute ``_nengo_html_``
on the output function of the nengo Node. To make the HTML static
(served once instead of every timestep), add the attribute
``_nengo_static_`` to the node's output function.
"""

def __init__(self, obj):
super(HTMLView, self).__init__()
self.obj = obj
self.obj_output = obj.output
self.data = collections.deque()
self.is_static = hasattr(self.obj_output, '_nengo_static_')
if self.is_static:
self.data.append('%g %s' % (0, self.obj_output._nengo_html_))

def attach(self, page, config, uid):
super(HTMLView, self).attach(page, config, uid)
Expand All @@ -27,8 +36,9 @@ def remove_nengo_objects(self, page):

def gather_data(self, t, *x):
value = self.obj_output(t, *x)
data = '%g %s' % (t, self.obj_output._nengo_html_)
self.data.append(data)
if not self.is_static:
data = '%g %s' % (t, self.obj_output._nengo_html_)
self.data.append(data)
return value

def update_client(self, client):
Expand Down