osrm-backend/WebContent/gui/OSRM.Selector.js
2012-08-31 14:24:35 +01:00

119 lines
4.3 KiB
JavaScript

/*
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU AFFERO General Public License as published by
the Free Software Foundation; either version 3 of the License, or
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
or see http://www.gnu.org/licenses/agpl.txt.
*/
// OSRM selector
// [create special selector elements]
OSRM.GUI.extend( {
// initialize selector with all options and our look&feel
selectorInit: function(id, options, selected, onchange_fct) {
// create dropdown menu
var select = document.getElementById(id);
select.className += " styled-select-helper base-font";
select.onchange = function() { OSRM.GUI._selectorOnChange(this); onchange_fct(this.value); };
// fill dropdown menu
for(var i=0, size=options.length; i<size; i++) {
var option=document.createElement("option");
option.innerHTML = options[i].display;
option.value = options[i].value;
select.appendChild(option);
}
select.value = options[selected].value;
// create visible dropdown menu
var textnode = document.createTextNode( options[selected].display );
var myspan = document.createElement("span");
myspan.className = "styled-select base-font";
myspan.id = "styled-select-" + select.id;
myspan.appendChild(textnode);
select.parentNode.insertBefore(myspan, select);
myspan.style.width = (select.offsetWidth-2)+"px";
myspan.style.height = (select.offsetHeight)+"px"; // clientHeight gives the height of the opened dropbox!
},
// required behaviour of selector on change to switch shown name
_selectorOnChange: function(select) {
var option = select.getElementsByTagName("option");
for(var i = 0; i < option.length; i++)
if(option[i].selected == true) {
document.getElementById("styled-select-" + select.id).childNodes[0].nodeValue = option[i].childNodes[0].nodeValue;
break;
}
},
// change selector value
selectorChange: function(id, value) {
var select = document.getElementById(id);
select.value = value;
OSRM.GUI._selectorOnChange(select);
},
// replace selector options with new names
selectorRenameOptions: function(id, options) {
var select = document.getElementById(id);
var styledSelect = document.getElementById("styled-select-"+id);
// create new dropdown menu
var new_select = document.createElement("select");
new_select.id = id;
new_select.className = select.className;
new_select.onchange = select.onchange;
// fill new dropdown menu
var selected_display = "";
for(var i=0, size=options.length; i<size; i++) {
var option=document.createElement("option");
option.innerHTML = options[i].display;
option.value = options[i].value;
new_select.appendChild(option);
if( options[i].value == select.value )
selected_display = options[i].display;
}
new_select.value = select.value;
// switch old with new dropdown menu
select.parentNode.insertBefore(new_select, select);
select.parentNode.removeChild(select);
// change styled dropdown menu size & language
styledSelect.childNodes[0].nodeValue = selected_display;
styledSelect.style.width = (new_select.offsetWidth-2)+"px";
styledSelect.style.height = (new_select.offsetHeight)+"px";
// // old variant without creating a new dropdown menu (works in current browsers, but not in older FF or IE)
// var select = document.getElementById(id);
// var select_options = select.getElementsByTagName("option");
// var styledSelect = document.getElementById("styled-select-"+id);
//
// // fill dropdown menu with new option names
// for(var i = 0; i < select_options.length; i++) {
// select_options[i].childNodes[0].nodeValue = options[i].display;
//
// if(select_options[i].selected == true)
// styledSelect.childNodes[0].nodeValue = options[i].display;
// }
//
// // resize visible dropdown menu as needed
// styledSelect.style.width = (select.offsetWidth-2)+"px";
// styledSelect.style.height = (select.offsetHeight)+"px"; // clientHeight gives the height of the opened dropbox!
}
});