mirror of
https://github.com/matrix-construct/construct
synced 2024-10-31 19:08:59 +01:00
115 lines
2.9 KiB
JavaScript
115 lines
2.9 KiB
JavaScript
/*
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* IRCd Charybdis 5/Matrix
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*
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* Copyright (C) 2017 Charybdis Development Team
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* Copyright (C) 2017 Jason Volk (jason@zemos.net)
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice is present in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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'use strict';
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/**************************************
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* Input history (bash style history)
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*
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* this = room
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*/
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room.input.history = {};
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room.input.history.history = function()
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{
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if(!Array.isArray(this.session.history))
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this.session.history = [];
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return this.session.history;
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};
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/** Add text to the history
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* (use enter() for official user input)
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*/
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room.input.history.add = function(text)
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{
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let history = this.input.history.history();
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history.push(text);
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};
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/** Get text from the history
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*/
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room.input.history.get = function(pos = 0)
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{
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let history = this.input.history.history();
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return history[history.length - pos - 1];
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};
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/** The number of lines in the history
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*/
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room.input.history.len = function()
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{
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let history = this.input.history.history();
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return maybe(() => history.length)? history.length : 0;
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};
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/** Enter text into the history and clear the input
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*/
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room.input.history.enter = function(text)
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{
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this.input.history.add(text);
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this.input.history.pos = undefined;
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this.control.input = "";
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};
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/** Handle an up-arrow event by restoring text from
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* history into the input.
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*/
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room.input.history.up = function(event)
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{
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let pos = this.input.history.pos;
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if(pos === undefined || pos < 0)
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{
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this.input.history.add(this.control.input);
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this.input.history.pos = pos = 1;
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}
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if(pos > this.input.history.len() - 1)
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return;
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this.control.input = this.input.history.get(pos);
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if(pos < this.input.history.len() - 1)
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++this.input.history.pos;
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};
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/** Handle a down-arrow event by restoring text from
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* history into the input.
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*/
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room.input.history.down = function(event)
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{
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let pos = this.input.history.pos;
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if(pos === undefined)
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return;
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if(pos < 0)
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{
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this.input.history.add(this.control.input);
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this.control.input = "";
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}
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else this.control.input = this.input.history.get(pos);
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if(pos >= 0)
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--this.input.history.pos;
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};
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