/* redMine - project management software
   Copyright (C) 2006-2008  Jean-Philippe Lang */

function checkAll (id, checked) {
    var els = Element.descendants(id);
    for (var i = 0; i < els.length; i++) {
        if (els[i].disabled==false) {
            els[i].checked = checked;
        }
    }
}

function toggleCheckboxesBySelector(selector) {
    boxes = $$(selector);
    var all_checked = true;
    for (i = 0; i < boxes.length; i++) {
        if (boxes[i].checked == false) {
            all_checked = false;
        }
    }
    for (i = 0; i < boxes.length; i++) {
        boxes[i].checked = !all_checked;
    }
}

function showAndScrollTo(id, focus) {
    Element.show(id);
    if (focus!=null) {
        Form.Element.focus(focus);
    }
    Element.scrollTo(id);
}

var fileFieldCount = 1;

function addFileField() {
    if (fileFieldCount >= 10) return false
    fileFieldCount++;
    var f = document.createElement("input");
    f.type = "file";
    f.name = "attachments[" + fileFieldCount + "][file]";
    f.size = 30;
    var d = document.createElement("input");
    d.type = "text";
    d.name = "attachments[" + fileFieldCount + "][description]";
    d.size = 30;
    
    p = document.getElementById("attachments_fields");
    p.appendChild(document.createElement("br"));
    p.appendChild(f);
    p.appendChild(d);
}

function showTab(name) {
    var f = $$('div#content .tab-content');
    for(var i=0; i<f.length; i++){
        Element.hide(f[i]);
    }
    var f = $$('div.tabs a');
    for(var i=0; i<f.length; i++){
        Element.removeClassName(f[i], "selected");
    }
    Element.show('tab-content-' + name);
    Element.addClassName('tab-' + name, "selected");
    return false;
}

function setPredecessorFieldsVisibility() {
    relationType = $('relation_relation_type');
    if (relationType && relationType.value == "precedes") {
        Element.show('predecessor_fields');
    } else {
        Element.hide('predecessor_fields');
    }
}

function promptToRemote(text, param, url) {
    value = prompt(text + ':');
    if (value) {
        new Ajax.Request(url + '?' + param + '=' + encodeURIComponent(value), {
            asynchronous:true,
            evalScripts:true
        });
        return false;
    }
}

function collapseScmEntry(id) {
    var els = document.getElementsByClassName(id, 'browser');
    for (var i = 0; i < els.length; i++) {
        if (els[i].hasClassName('open')) {
            collapseScmEntry(els[i].id);
        }
        Element.hide(els[i]);
    }
    $(id).removeClassName('open');
}

function expandScmEntry(id) {
    var els = document.getElementsByClassName(id, 'browser');
    for (var i = 0; i < els.length; i++) {
        Element.show(els[i]);
        if (els[i].hasClassName('loaded') && !els[i].hasClassName('collapsed')) {
            expandScmEntry(els[i].id);
        }
    }
    $(id).addClassName('open');
}

function scmEntryClick(id) {
    el = $(id);
    if (el.hasClassName('open')) {
        collapseScmEntry(id);
        el.addClassName('collapsed');
        return false;
    } else if (el.hasClassName('loaded')) {
        expandScmEntry(id);
        el.removeClassName('collapsed');
        return false;
    }
    if (el.hasClassName('loading')) {
        return false;
    }
    el.addClassName('loading');
    return true;
}

function scmEntryLoaded(id) {
    Element.addClassName(id, 'open');
    Element.addClassName(id, 'loaded');
    Element.removeClassName(id, 'loading');
}

function randomKey(size) {
    var chars = new Array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z');
    var key = '';
    for (i = 0; i < size; i++) {
        key += chars[Math.floor(Math.random() * chars.length)];
    }
    return key;
}

var manageLinks = function(list) {
    list.each(function(link){
        link.observe('click', function(){
            list.each(function(link){
                link.removeClassName('selected')
            })
            link.addClassName('selected')
        });
    })
}

var manageSubmenuLinks = function() {
    var current_adress = document.URL;
    var selected_link = null;
    if (current_adress.match('Examples')) {
        selected_link = $$('.submenu .examples').first();
    } else if (current_adress.match('Documentation')) {
        selected_link = $$('.submenu .documents').first();
    } else {
        selected_link  = $$('.submenu a').find(function(link){ return current_adress.match(link.href) });
    }
    if (! (Object.isUndefined(selected_link) ||  selected_link == null)) {
        selected_link.addClassName('selected')
    }
}

/* shows and hides ajax indicator */
Ajax.Responders.register({
    onCreate: function(){
        if ($('ajax-indicator') && Ajax.activeRequestCount > 0) {
            Element.show('ajax-indicator');
        }
    },
    onComplete: function(){
        if ($('ajax-indicator') && Ajax.activeRequestCount == 0) {
            Element.hide('ajax-indicator');
        }
    }
});