124 lines
3.3 KiB
Python
124 lines
3.3 KiB
Python
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import gtk
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import logger
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class Workflow:
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"""Defines a workflow that contains a set of analysis stages.
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A Workflow is a set of analysis stages for a certain type of analysis.
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Each stage contains some possible operations to do accomplish that
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task.
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"""
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name = "Workflow"
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description = "Workflow Description"
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def __init__(self, app):
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self.stages = []
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self.stages_by_id = {}
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self.app = app
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def add_stage(self, stage):
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self.stages.append(stage)
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self.stages_by_id[stage.id] = stage
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def print_tree(self):
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print self.name
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for stage in self.stages:
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print ' %s' % stage.name
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for fun in stage.functions:
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print ' %s' % fun.name
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def add_project(self,project):
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self.project = project
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class EmptyWorkflow(Workflow):
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name = 'Empty Workflow'
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def __init__(self, app):
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Workflow.__init__(self, None)
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class Stage:
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"""A stage is a part of the data analysis process.
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Each stage contains a set of functions that can be used to
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accomplish the task. A typical early stage is 'preprocessing', which
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can be done in several ways, each represented by a function.
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"""
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def __init__(self, id, name):
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self.id = id
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self.name = name
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self.functions = []
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self.functions_by_id = {}
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def add_function(self, fun):
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self.functions.append(fun)
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self.functions_by_id[fun.id] = fun
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class Function:
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"""A Function object encapsulates a function on a data set.
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Each Function instance encapsulates some function that can be applied
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to one or more types of data.
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"""
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def __init__(self, id, name):
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self.id = id
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self.name = name
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def valid_input(input):
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return True
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def run(self, data):
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pass
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class WorkflowView (gtk.VBox):
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def __init__(self, wf):
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gtk.VBox.__init__(self)
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self.workflow = wf
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self.setup_workflow(wf)
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def setup_workflow(self, wf):
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# Add stage in the process
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for stage in wf.stages:
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exp = gtk.Expander(stage.name)
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btn_box = gtk.VBox()
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btn_box.show()
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exp.add(btn_box)
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# Add functions in each stage
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for fun in stage.functions:
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btn = gtk.Button(fun.name)
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btn.connect('clicked', self.button_click_handler)
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btn.function = fun
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btn_box.add(btn)
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btn.show()
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exp.show()
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self.pack_start(exp, expand=False, fill=False)
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def remove_workflow(self):
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for c in self.get_children():
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c.hide()
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self.remove(c)
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def set_workflow(self, workflow):
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self.workflow = workflow
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self.remove_workflow()
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self.setup_workflow(workflow)
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def run_function(self, function):
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logger.log('debug', 'Starting function: %s' % function.name)
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project = self.workflow.app.project
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new_data = function.run(project.current_data)
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if new_data != None:
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project.add_data(None, new_data)
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logger.log('debug', 'Function ended: %s' % function.name)
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def button_click_handler(self, button):
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self.run_function(function = button.function)
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