Class OutputHandler

pywebio/output.py:1854–1893

与 `Output` 的不同在于， 不会在销毁时(__del__)自动输出 The difference with `Output` is that `OutputHandler` will not automatically output when destroyed (__del__)

                  "use `pywebio.output.put_scope()` instead", DeprecationWarning, stacklevel=2)

    class OutputHandler(Output):
        """
        与 `Output` 的不同在于， 不会在销毁时(__del__)自动输出
        The difference with `Output` is that `OutputHandler` will not automatically output when destroyed (__del__)
        """

        def __del__(self):
            pass

        def __init__(self, spec, scope):
            super().__init__(spec)
            self.scope = scope

        @safely_destruct_output_when_exp('outputs')
        def reset(self, *outputs):
            clear_scope(scope=self.scope)
            self.append(*outputs)

        @safely_destruct_output_when_exp('outputs')
        def append(self, *outputs):
            for o in outputs:
                if not isinstance(o, Output):
                    o = put_text(o)
                o.spec['scope'] = scope2dom(self.scope)
                o.spec['position'] = OutputPosition.BOTTOM
                o.send()

        @safely_destruct_output_when_exp('outputs')
        def insert(self, idx, *outputs):
            """
            idx可为负
            idx can be negative
            """
            direction = 1 if idx >= 0 else -1
            for acc, o in enumerate(outputs):
                if not isinstance(o, Output):
                    o = put_text(o)
                o.spec['scope'] = scope2dom(self.scope)
                o.spec['position'] = idx + direction * acc
                o.send()

    contents = [c if isinstance(c, Output) else put_text(c) for c in contents]