57 lines
1.5 KiB
Python
57 lines
1.5 KiB
Python
# Copyright 2021 (c) Anna Schumaker.
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from gi.repository import GLib
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from gi.repository import GObject
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from . import task
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class TaskQueue(GObject.GObject):
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def __init__(self):
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GObject.GObject.__init__(self)
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self.tasks = [ ]
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self.total = 0
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self.idleid = None
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def __del__(self):
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if self.idleid != None:
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GLib.source_remove(self.idleid)
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def push(self, task):
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self.emit("task-pushed", task)
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def clear(self):
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self.emit("tasks-finished")
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def run(self):
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self.emit("run-task", self.tasks.pop(0))
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if len(self.tasks) > 0:
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return GLib.SOURCE_CONTINUE
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self.emit("tasks-finished")
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return GLib.SOURCE_REMOVE
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@GObject.Property
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def progress(self):
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if len(self.tasks) == 0:
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return 0
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return (self.total - len(self.tasks)) / self.total
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@GObject.Signal(arg_types=(task.Task,))
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def task_pushed(self, task):
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self.tasks.append(task)
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self.total += 1
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if self.idleid == None:
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self.idleid = GLib.idle_add(self.run)
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@GObject.Signal(arg_types=(task.Task,))
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def run_task(self, task):
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if tasks := task.run_task():
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self.tasks += tasks
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self.total += len(tasks)
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@GObject.Signal
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def tasks_finished(self):
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if self.idleid:
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GLib.source_remove(self.idleid)
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self.tasks.clear()
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self.total = 0
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self.idleid = None
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