91 lines
2.8 KiB
Python
91 lines
2.8 KiB
Python
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import param
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import panel as pn
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import toml
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from .util import get_plans, get_manifest
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from .composition import Composition
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STAGE_WELCOME = 'Welcome'
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STAGE_CONFIG_COMPOSITION = 'Configure'
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class Welcome(param.Parameterized):
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composition = param.Parameter()
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composition_picker = pn.widgets.FileInput(accept='.toml')
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plan_picker = param.Selector()
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ready = param.Boolean()
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def __init__(self, **params):
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super().__init__(**params)
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self.composition_picker.param.watch(self._composition_updated, 'value')
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self.param.watch(self._plan_selected, 'plan_picker')
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self.param['plan_picker'].objects = ['Select a Plan'] + get_plans()
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def panel(self):
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tabs = pn.Tabs(
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('New Compostion', self.param['plan_picker']),
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('Existing Composition', self.composition_picker),
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)
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return pn.Column(
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"Either choose an existing composition or select a plan to create a new composition:",
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tabs,
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)
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def _composition_updated(self, *args):
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print('composition updated')
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content = self.composition_picker.value.decode('utf8')
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comp_toml = toml.loads(content)
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manifest = get_manifest(comp_toml['global']['plan'])
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self.composition = Composition.from_dict(comp_toml, manifest=manifest)
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print('existing composition: {}'.format(self.composition))
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self.ready = True
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def _plan_selected(self, evt):
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if evt.new == 'Select a Plan':
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return
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print('plan selected: {}'.format(evt.new))
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manifest = get_manifest(evt.new)
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self.composition = Composition(manifest=manifest)
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print('new composition: ', self.composition)
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self.ready = True
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class ConfigureComposition(param.Parameterized):
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composition = param.Parameter()
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@param.depends('composition')
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def panel(self):
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if self.composition is None:
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return pn.Pane("no composition :(")
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print('composition: ', self.composition)
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return self.composition.panel()
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class WorkflowPipeline(object):
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def __init__(self):
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stages = [
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(STAGE_WELCOME, Welcome(), dict(ready_parameter='ready')),
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(STAGE_CONFIG_COMPOSITION, ConfigureComposition())
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]
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self.pipeline = pn.pipeline.Pipeline(debug=True, stages=stages)
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def panel(self):
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return pn.Column(
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pn.Row(
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self.pipeline.title,
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self.pipeline.network,
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self.pipeline.prev_button,
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self.pipeline.next_button,
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),
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self.pipeline.stage,
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)
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class App(object):
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def __init__(self):
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self.workflow = WorkflowPipeline()
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def ui(self):
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return self.workflow.panel().servable("Testground Composer")
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