mirror of
https://github.com/matrix-construct/construct
synced 2024-11-15 06:21:06 +01:00
148 lines
3.7 KiB
JavaScript
148 lines
3.7 KiB
JavaScript
/*
|
|
// Matrix Construct
|
|
//
|
|
// Copyright (C) Matrix Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice is present in all copies. The
|
|
// full license for this software is available in the LICENSE file.
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
room.prototype.current_event = function(minus = 0)
|
|
{
|
|
return this.timeline[this.timeline.length - 1 - minus];
|
|
};
|
|
|
|
room.prototype.current_event_id = function(minus = 0)
|
|
{
|
|
return this.current_event(minus).event_id;
|
|
};
|
|
|
|
room.events = class extends mc.ng.controller
|
|
{
|
|
constructor($scope)
|
|
{
|
|
super("room.events", $scope);
|
|
this.room = this.$scope.room;
|
|
|
|
if(!this.room.scroll.initial_backfill)
|
|
this.room.scroll.initial_backfill = this.initial_backfill();
|
|
}
|
|
};
|
|
|
|
mc.ng.app.controller('room.events', room.events);
|
|
|
|
room.events.prototype.destructor = function()
|
|
{
|
|
let room = this.room;
|
|
|
|
// save scroll pos
|
|
room.scroll.last = room.scroll.at();
|
|
};
|
|
|
|
room.events.prototype.constructed = async function()
|
|
{
|
|
await this.room.scroll.initial_backfill;
|
|
|
|
// restore saved scroll pos
|
|
if(this.room.scroll.last !== undefined)
|
|
this.room.scroll.to(this.room.scroll.last);
|
|
else
|
|
this.room.scroll.to.bottom();
|
|
|
|
// register scroll event (TODO: directive??)
|
|
this.room.receipt.send.current();
|
|
};
|
|
|
|
room.events.prototype.initial_backfill = async function()
|
|
{
|
|
let limit = this.room.timeline.opts.limit;
|
|
let count = Math.min(128, limit); try
|
|
{
|
|
await this.room.scroll.back(count);
|
|
}
|
|
catch(error)
|
|
{
|
|
console.error("Initial backfill error: " + error);
|
|
}
|
|
};
|
|
|
|
/* Result of this determines the ng-if of the event in the view,
|
|
* i.e if false, this event has no DOM element.
|
|
*/
|
|
room.events.prototype.can_render = function(event, $index)
|
|
{
|
|
if(this.room.control.content.type[event.type] === false)
|
|
return false;
|
|
|
|
//if(this.room.timeline.length > this.room.timeline.opts.limit)
|
|
// if($index < this.room.timeline.horizon)
|
|
// return false;
|
|
|
|
return true;
|
|
};
|
|
|
|
/* Result of this determines if this event is visible in the view.
|
|
* The default behavior is to hide the accumulated state events below
|
|
* the event horizon.
|
|
*/
|
|
room.events.prototype.can_show = function(event, $index)
|
|
{
|
|
// Force showing a specific event by ID using this condition
|
|
if(this.room.control.content.event_id[event.event_id] === true)
|
|
return true;
|
|
|
|
// Force hiding a specific event by ID using this condition
|
|
if(this.room.control.content.event_id[event.event_id] === false)
|
|
return false;
|
|
|
|
if($index < this.room.timeline.length - this.room.timeline.opts.limit)
|
|
if($index < this.room.timeline.horizon)
|
|
return false;
|
|
|
|
return true;
|
|
};
|
|
|
|
/* Right now before (if ever) the event timeline is split up into groupings
|
|
* of events to provide margins and collapse for a grouping we use this to
|
|
* determine if the event before it is
|
|
*/
|
|
room.events.prototype.is_grouping_start = function(event, $index)
|
|
{
|
|
let prev = this.room.timeline[$index - 1];
|
|
if(!prev)
|
|
return true;
|
|
|
|
if(event.type == "m.room.message" && prev.type != event.type)
|
|
return true;
|
|
|
|
if(event.type == "m.room.message" && event.sender != prev.sender)
|
|
return true;
|
|
|
|
if(event.type != "m.room.message" && prev.type == "m.room.message")
|
|
return true;
|
|
|
|
return false;
|
|
};
|
|
|
|
room.events.prototype.is_grouping_end = function(event, $index)
|
|
{
|
|
let next = this.room.timeline[$index + 1];
|
|
if(!next)
|
|
return false;
|
|
|
|
if(event.type == "m.room.message" && next.type != event.type)
|
|
return true;
|
|
|
|
if(event.type == "m.room.message" && next.sender != event.sender)
|
|
return true;
|
|
|
|
if(event.type != "m.room.message" && next.type == "m.room.message")
|
|
return true;
|
|
|
|
return false;
|
|
};
|