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module-history-vis
Kegan Dougal 9 years ago
parent e378de8379
commit 173d00cea0

@ -6,13 +6,27 @@ Room History Visibility
This module adds support for controlling the visibility of previous events in a
room. Whether a member of a room can see the events that happened in a room from
before they joined the room is controlled by the ``m.room.history_visibility``
event outlined below. Visibility can take the form of one of three options:
- ``shared`` - Previous events are always shown to newly joined members.
event outlined below. In all cases, the member still needs to be joined to the
room to receive events for that room. The visibility option simply determines
which subset of events in the room are presented to the client. Visibility can
take the form of one of three options:
- ``shared`` - Previous events are always shown to newly joined members. All
events in the room are shown, even those sent when the member was not a part
of the room.
- ``invited`` - Previous events are shown to newly joined members from the point
they were invited onwards.
they were invited onwards. Events stop being shown when the member's state
changes to something other than ``invite`` or ``join``.
- ``joined`` - Previous events are shown to newly joined members from the point
they joined the room onwards.
they joined the room onwards. Events stop being shown when the members state
changes to something other than ``join``.
.. WARNING::
These options are applied at the point an event is *sent*. Checks are
performed with the state of the ``m.room.history_visibility`` event when the
event in question is added to the DAG. This means clients cannot
retrospectively choose to show or hide history to new users if the setting at
that time was more restrictive.
Events
------

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