// whatsnew.js - JavaScript
// Copyright 2006 Sofrosune. All rights reserved.
// Author: Sofrosune; www.sofrosune.net
// No part of this program may be reproduced or transmitted in any form or
// by any means without permission from the author, Sofrosune.
//
// Date: May 31, 2006.
// Version: 1.00; May 31, 2006.
// Usage: index.html?PARAM_TYPE=info&PARAM_OFFSET=10
/**
*/
// constants
var kWHATSNEW_HEAD_TMPL = '\
\
';
var kWHATSNEW_FOOT_TMPL = '
\
';
var kWHATSNEW_ITEM_TMPL = '\
| $$$date$$$ | \
| \
$$$text$$$ | \
\
';
var kWHATSNEW_SEPA_TMPL = '\
| \
\
';
var kWHATSNEW_NAVI_TMPL = '\
\
\
| $$$prev$$$ | \
$$$next$$$ | \
\
\
';
var kWHATSNEW_PREV_TMPL = 'Show previous $$$rest$$$ items';
var kWHATSNEW_NEXT_TMPL = 'Show next $$$rest$$$ items';
// global variables
var gWhatsnew_numb = 5;
var gWhatsnew_data = new Array(); /* [ [date1,text1],[date2,text2],...,null ] */
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// cWhatsnew_param
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Usage:
// index.htlm?PARAM_TYPE=info&PARAM_OFFSET=10
// var param = new cWhatsnew_param()
function cWhatsnew_param() {
this.self = "index.html";
this.type = "";
this.offset = 0;
this.start = 0;
this.end = 0;
// get self; "index.html"
var path = location.pathname.replace(/\\/g,"/");
if (path.search(/\/([^\/]+)$/) != -1) {
this.self = RegExp.$1;
}
// parse params
var param_str = location.search; // "?KEY1=VAL1&KEY2=VAL2"
if (param_str.charAt(0) == "?") {
param_str = param_str.substring(1);
var params = param_str.split("&");
for (var i = 0; i < params.length; i++) {
var tuple = params[i].split("=");
var key = tuple[0]; // unescape()
var val = tuple[1]; // unescape()
switch (key) {
case "PARAM_TYPE": this.type = val; break;
case "PARAM_OFFSET": this.offset = parseInt(val); break;
}
}
}
// debug
// window.alert("(type,offset)=("+this.type+","+this.offset+")");
}
var gWhatsnew_param = new cWhatsnew_param();
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// whatsnew_rest
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Usage:
// offset = [0 .. (gWhatsnew_data.length - 1)]
// step = [-1 or 1]
function whatsnew_rest(offset,step,type) {
step = (step > 0 ? +1 : (step < 0 ? -1 : 0));
if ((type == undefined) || (type == "")) { type = "all"; }
var count = 0;
while ((offset >= 0) && (offset < gWhatsnew_data.length)) {
var tuple = gWhatsnew_data[offset];
offset += step;
if (tuple == null) { continue; }
if ((type == "all") || (type == tuple[1])) { count += 1; }
}
return count;
}
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// whatsnew_put
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
function whatsnew_put(type,numb) {
if ((numb == undefined) || (numb < 0)) { numb = gWhatsnew_numb; }
if (type != undefined) { gWhatsnew_param.type = type; }
type = gWhatsnew_param.type;
if (type == "") { type = "all"; }
var offset = gWhatsnew_param.offset;
var step = +1;
if (offset < 0) { offset = - offset; step = - step; }
// seach database for type record
var idxes = new Array();
var n = offset;
while ((idxes.length < numb) && (n >= 0) && (n < gWhatsnew_data.length)) {
var tuple = gWhatsnew_data[n];
n += step;
if (tuple == null) { continue; }
if ((type == "all") || (type == tuple[1]) ) { idxes.push(n - step); }
}
if (step < 0) { idxes = idxes.reverse(); }
if (idxes.length == 0) { return; }
gWhatsnew_param.start = idxes[0];
gWhatsnew_param.end = idxes[idxes.length - 1];
// generate message
var msg = "";
msg += kWHATSNEW_HEAD_TMPL;
for (var i = 0; i < idxes.length; i++) {
if (i > 0) { msg += kWHATSNEW_SEPA_TMPL; }
var tuple = gWhatsnew_data[idxes[i]];
var date = tuple[0];
var type = tuple[1];
var text = tuple[2];
var aMsg = kWHATSNEW_ITEM_TMPL;
aMsg = aMsg.replace(/\$\$\$date\$\$\$/g,date);
aMsg = aMsg.replace(/\$\$\$type\$\$\$/g,type);
aMsg = aMsg.replace(/\$\$\$text\$\$\$/g,text);
msg += aMsg;
}
msg += kWHATSNEW_FOOT_TMPL;
document.write(msg);
}
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// whatsnew_navi
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
function whatsnew_navi() {
var self = gWhatsnew_param.self;
var type = gWhatsnew_param.type;
if (type == "") { type = "all"; }
var offset = gWhatsnew_param.offset;
var step = +1;
if (offset < 0) { offset = - offset; step = - step; }
var start = gWhatsnew_param.start;
var end = gWhatsnew_param.end;
var rest_prev = whatsnew_rest(start-1,-1,type);
var rest_next = whatsnew_rest(end+1,+1,type);
// generate prev and next navi
var navi_prev = ' ';
var navi_next = ' ';
// prev navi
if (rest_prev > 0) {
var aMsg = kWHATSNEW_PREV_TMPL;
aMsg = aMsg.replace(/\$\$\$self\$\$\$/g,self);
aMsg = aMsg.replace(/\$\$\$type\$\$\$/g,type);
aMsg = aMsg.replace(/\$\$\$offset\$\$\$/g,- (start-1));
aMsg = aMsg.replace(/\$\$\$rest\$\$\$/g,rest_prev);
navi_prev = aMsg;
}
// prev navi
if (rest_next > 0) {
var aMsg = kWHATSNEW_NEXT_TMPL;
aMsg = aMsg.replace(/\$\$\$self\$\$\$/g,self);
aMsg = aMsg.replace(/\$\$\$type\$\$\$/g,type);
aMsg = aMsg.replace(/\$\$\$offset\$\$\$/g,end+1);
aMsg = aMsg.replace(/\$\$\$rest\$\$\$/g,rest_next);
navi_next = aMsg;
}
// generate navi
var msg = kWHATSNEW_NAVI_TMPL;
msg = msg.replace(/\$\$\$prev\$\$\$/g,navi_prev);
msg = msg.replace(/\$\$\$next\$\$\$/g,navi_next);
document.write(msg);
}
// end of javascript