DDMsgAreaChooser.js

/* This is a script that lets the user choose a message area,
 * with either a lightbar or traditional user interface.
 *
 * Date       User          Version Description
 * 2010-02-05 Eric Oulashin 0.90    Started
 * 2010-02-18 to
 * 2010-02-27 Eric Oulashin         Continued work.
 *                                  Added the first & lasg page functionality
 *                                  to the lightbar interface.
 * 2010-03-13 Eric Oulashin 1.00    Added the ability to load settings from a
 *                                  configuration file.
 * 2011-04-22 Eric Oulashin 1.01    Fixed the wording when choosing a message
 *                                  group - It now says "group #" instead
 *                                  of "sub-board #".
 * 2012-10-06 Eric Oulashin 1.02    For lightbar mode, updated to display the
 *                                  page number in the header at the top (in
 *                                  addition to the total number of pages,
 *                                  which it was already displaying).
 * 2012-11-30 Eric Oulashin 1.03    Bug fix: After leaving the help screen
 *                                  from the sub-board list, the top line is
 *                                  now correctly written with the page
 *                                  information as "Page # of #".
 * 2013-05-04 Eric Oulashin 1.04    Updated to dynamically adjust the length
 *                                  of the # messages column based on the
 *                                  greatest number of messages of all
 *                                  sub-boards within a message group so
 *                                  that the formatting still looks good.
 * 2013-05-10 Eric Oulashin 1.05    Updated the version to match the
 *                                  version in DDFileAreaChooser (a bug
 *                                  was fixed there, but DDMsgAreaChooser
 *                                  didn't have the corresponding bug).
 * 2014-09-14 Eric Oulashin 1.06    Bug fix: Updated the highlight (lightbar)
 *                                  format string in the
 *                                  DDMsgAreaChooser_buildSubBoardPrintfInfoForGrp()
 *                                  function to include a normal attribute at
 *                                  the end to avoid color issues when clearing
 *                                  the screen, etc.  Bug reported by Psi-Jack.
 * 2014-12-22 Eric Oulashin 1.07    Bug fix: Made this.colors.subBoardHeader apply
 *                                  to the whole line rather than just the page
 *                                  number.
 *                                  Bug fix: The initial display of the page number
 *                                  is now correct (previously, it would start out
 *                                  saying page 1, even if on another page).
 * 2015-04-19 Eric Oulashin 1.08    Added color settings for the lightbar help text
 *                                  at the bottom of the screen.  Also, added the
 *									ability to use the PageUp & PageDown keys instead
 *                                  of P and N in the lightbar lists.
 * 2016-01-17 Eric Oulashin 1.09    Updated to allow choosing only the sub-board within
 *                                  the user's current message group.  The first command-
 *                                  line argument now specifies whether or not to
 *                                  allow choosing the message group, and it defaults
 *                                  to true.
 * 2016-02-12 Eric Oulashin 1.10Beta Started working on adding the ability to display
 *                                  a header ANSI/ASCII file above the list.
 * 2016-02-15 Eric Oulashin 1.10    Releasing this version
 * 2016-02-19 Eric Oulashin 1.11    Bug fix: The page number wasn't being updated
 *                                  when changing pages in the message groups
 *                                  when using the arrow keys to scroll between
 *                                  pages
 * 2016-11-20 Eric Oulashin 1.12    Started working on updating to handle null
 *                                  message headers, which could happen with the
 *                                  new voting feature in Synchronet 3.17.
 * 2016-11-22 Eric Oulashin 1.12    Releasing this version
 * 2016-12-11 Eric Oulashin 1.13    Updated to show the number of readable messages rather than
 *                                  the actual total number of messages in the sub-boards (in
 *                                  case some messages are deleted, unverified, etc.)
*/

/* Command-line arguments:
   1 (argv[0]): Boolean - Whether or not to choose a message group first (default).  If
                false, the user will only be able to choose a different sub-board within
				their current message group.
   2 (argv[1]): Boolean - Whether or not to run the area chooser (if false,
                then this file will just provide the DDMsgAreaChooser class).
*/

load("sbbsdefs.js");

// This script requires Synchronet version 3.14 or higher.
// Exit if the Synchronet version is below the minimum.
if (system.version_num < 31400)
{
	var message = "\1n\1h\1y\1i* Warning:\1n\1h\1w Digital Distortion Message Lister "
	             + "requires version \1g3.14\1w or\r\n"
	             + "higher of Synchronet.  This BBS is using version \1g" + system.version
	             + "\1w.  Please notify the sysop.";
	console.crlf();
	console.print(message);
	console.crlf();
	console.pause();
	exit();
}

// Version & date variables
var DD_MSG_AREA_CHOOSER_VERSION = "1.14";
var DD_MSG_AREA_CHOOSER_VER_DATE = "2017-08-30";

// Keyboard input key codes
var CTRL_M = "\x0d";
var KEY_ENTER = CTRL_M;
var KEY_ESC = ascii(27);
// PageUp & PageDown keys - Not real key codes, but codes defined
// to be used & recognized in this script
var KEY_PAGE_UP = "\1PgUp";
var KEY_PAGE_DOWN = "\1PgDn";

// Key codes for display
var UP_ARROW = ascii(24);
var DOWN_ARROW = ascii(25);

// Determine the script's startup directory.
// This code is a trick that was created by Deuce, suggested by Rob Swindell
// as a way to detect which directory the script was executed in.  I've
// shortened the code a little.
var gStartupPath = '.';
try { throw dig.dist(dist); } catch(e) { gStartupPath = e.fileName; }
gStartupPath = backslash(gStartupPath.replace(/[\/\\][^\/\\]*$/,''));

// gIsSysop stores whether or not the user is a sysop.
var gIsSysop = user.compare_ars("SYSOP"); // Whether or not the user is a sysop

// 1st command-line argument: Whether or not to choose a message group first (if
// false, then only choose a sub-board within the user's current group).  This
// can be true or false.
var chooseMsgGrp = true;
if (typeof(argv[0]) == "boolean")
	chooseMsgGrp = argv[0];
else if (typeof(argv[0]) == "string")
	chooseMsgGrp = (argv[0].toLowerCase() == "true");

// 2nd command-line argument: Determine whether or not to execute the message listing
// code (true/false)
var executeThisScript = true;
if (typeof(argv[1]) == "boolean")
	executeThisScript = argv[1];
else if (typeof(argv[1]) == "string")
	executeThisScript = (argv[1].toLowerCase() == "true");

// If executeThisScript is true, then create a DDMsgAreaChooser object and use
// it to let the user choose a message area.
if (executeThisScript)
{
	var msgAreaChooser = new DDMsgAreaChooser();
	msgAreaChooser.SelectMsgArea(chooseMsgGrp);
}

// End of script execution

///////////////////////////////////////////////////////////////////////////////////
// DDMsgAreaChooser class stuff

function DDMsgAreaChooser()
{
	// this.colors will be an associative array of colors (indexed by their
	// usage) used for the message group/sub-board lists.
	// Colors for the file & message area lists
	this.colors = new Object();
	this.colors.areaNum = "\1n\1w\1h";
	this.colors.desc = "\1n\1c";
	this.colors.numItems = "\1b\1h";
	this.colors.header = "\1n\1y\1h";
	this.colors.subBoardHeader = "\1n\1g";
	this.colors.areaMark = "\1g\1h";
	this.colors.latestDate = "\1n\1g";
	this.colors.latestTime = "\1n\1m";
	// Highlighted colors (for lightbar mode)
	this.colors.bkgHighlight = "\1" + "4"; // Blue background
	this.colors.areaNumHighlight = "\1w\1h";
	this.colors.descHighlight = "\1c";
	this.colors.dateHighlight = "\1w\1h";
	this.colors.timeHighlight = "\1w\1h";
	this.colors.numItemsHighlight = "\1w\1h";
	// Lightbar help line colors
	this.colors.lightbarHelpLineBkg = "\1" + "7";
	this.colors.lightbarHelpLineGeneral = "\1b";
	this.colors.lightbarHelpLineHotkey = "\1r";
	this.colors.lightbarHelpLineParen = "\1m";

	// showImportDates is a boolean to specify whether or not to display the
	// message import dates.  If false, the message written dates will be
	// displayed instead.
	this.showImportDates = true;

	// useLightbarInterface specifies whether or not to use the lightbar
	// interface.  The lightbar interface will still only be used if the
	// user's terminal supports ANSI.
	this.useLightbarInterface = true;

	// These variables store the lengths of the various columns displayed in
	// the message group/sub-board lists.
	// Sub-board info field lengths
	this.areaNumLen = 4;
	this.numItemsLen = 4;
	this.dateLen = 10; // i.e., YYYY-MM-DD
	this.timeLen = 8;  // i.e., HH:MM:SS
	// Sub-board name length - This should be 47 for an 80-column display.
	this.subBoardNameLen = console.screen_columns - this.areaNumLen -
	this.numItemsLen - this.dateLen - this.timeLen - 7;
	// Message group description length (67 chars on an 80-column screen)
	this.msgGrpDescLen = console.screen_columns - this.areaNumLen -