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permalink.js
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permalink.js
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/**
* PermaPlan
* By Patrick Herzberg and Stefan Wehrmeyer
* Licensed under the MIT license.
*
*/
(function(){
var vbb = true;
vbb_permalink_init();
function vbb_permalink_init() {
/* corret website? */
if(window.location.host != "reiseauskunft.bahn.de" && window.location.host!= "fahrinfo.vbb.de") {
/* alert why it failed */
alert('PermaPlan is only usable on following websites: reiseauskunft.bahn.de and fahrinfo.vbb.de.');
return false;
}
/* vbb? */
vbb = (window.location.host == "fahrinfo.vbb.de")?true:false;
/* add head */
var tableclass = (vbb)?'overviewTableHead':'result';
tbody = document.getElementsByClassName(tableclass);
if(vbb_permalink_has_class(tbody[0],'vbb-permalink')) {
/* alert why it failed */
alert('PermaPlan already applied.');
return false;
}
tbody[0].className += " vbb-permalink";
var rows = tbody[0].getElementsByTagName("tr");
var cell = document.createElement("th");
cell.innerHTML = "Permalink";
cell.style.padding = "2px 10px";
rows[0].appendChild(cell);
/* apply share link */
tbody = (vbb)?document.getElementById('conGroup_Foot'):tbody[0].getElementsByTagName("tbody")[0];
if(vbb) {
var thead = tbody.getElementsByClassName('separatorSmall');
thead[0].colSpan += 1;
}
var rowclass = (vbb)?'tpOverview':'firstrow'
rows = tbody.getElementsByClassName(rowclass);
var activeUrl, count = 0, noPropagate = function(e) {
e.stopPropagation();
};
/* addept link and detail rows */
if(!vbb) {
var links = tbody.getElementsByClassName('links'),
details = tbody.getElementsByClassName('details');
links = Array.prototype.slice.call(links);
details = Array.prototype.slice.call(details);
var extras = links.concat(details);
for(var i = 0; i < extras.length; i++) {
/**
* cannot use lastChild (readonly)
* http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-61AD09FB
*/
var children = extras[i].children;
if(children.length == 1) {
extras[i].children[0].colSpan += 1;
} else {
extras[i].children[children.length-1].colSpan +=1;
}
}
}
for(var i = 0; i < rows.length; i++) {
if(!vbb_permalink_has_class(rows[i],'navi')) {
count += 1;
if(vbb_permalink_has_class(rows[i],'active')) {
activeUrl = vbb_permalink_get_url(rows[i]);
}
cell = document.createElement("td");
cell.innerHTML = '<a href="' + vbb_permalink_get_url(rows[i]) + '">Permalink</a>';
cell.style.padding = "2px 10px";
cell.addEventListener("click", noPropagate);
if(!vbb) {
cell.rowSpan = 2;
}
rows[i].appendChild(cell);
} else if(vbb){
rows[i].getElementsByClassName('last')[0].colSpan +=1;
}
}
if (count === 3) {
if (activeUrl) {
history.pushState(null, null, activeUrl);
} else {
history.pushState(null, null, vbb_permalink_get_url());
}
}
}
function vbb_permalink_get_url(row) {
var ids = (vbb)?['HFS_from','HFS_to','HFS_date_REQ0','HFS_time_REQ0']:['locS0','locZ0','REQ0JourneyDate','REQ0JourneyTime'];
var from = document.getElementById(ids[0]).value,
to = document.getElementById(ids[1]).value,
time = document.getElementById(ids[3]).value,
date,
hwai,
url = '',
details = document.getElementsByClassName('details');
/* bahn.de date input has no id */
if(vbb) {
date = document.getElementById(ids[2]).value;
} else {
date = document.getElementsByName(ids[2])[0].value;
}
if (row){
if(vbb) {
hwai = row.id.substring(10);
} else {
hwai = row.children[0].children[0].id.substring(7);
}
var cellclass = (vbb)?'planed':'time';
var timeDom = row.getElementsByClassName(cellclass);
time = timeDom[0].innerHTML.substring(1,6);
}
url = 'dn?From=' + from + '%21&To=' + to + '%21&time=' + time + '&date=' + date + '&start=1' ;
if (hwai) {
url += '&HWAI=CONNECTION$' + hwai + '!id=' + hwai + '!HwaiConId=' + hwai + '!HwaiDetailStatus=details';
}
url += '#focus';
return url;
}
function vbb_permalink_has_class(el, selector) {
var className = " " + selector + " ";
if ((" " + el.className + " ").replace(/[\n\t]/g, " ").indexOf(className) > -1) {
return true;
}
return false;
}
}());