//KeyCodes
var kReturn=13;
var kTab=9;
var kEsc=27;

// Support for expanders @ Lister

var expander_open=new Array();    
    /* we remember opened expanders so we know what to do when clicked */
var inline_active=new Array();
    /* same as for expanders, but applying to inline edits. 
       they should be processed differently 
       this array contains URLs to close inlines
    */
function inline_is_active(name,id){
        if(inline_active[name])return inline_active[name][id];
        else return false;
}

function expander_is_open(name,id,button){
    /*
     * This would just return exander's state on a button click. If another expander is
     * open, it would not do anything, just return it's button's name.
     */
    //inlines should be hidden anyway
    if(inline_is_active(name,id))return "inline_active";

    id=name+"_"+id;

    if(expander_open[id]==button){
        expander_open[id]='';
        return "_closing";
    }else if(expander_open[id]){
        return expander_open[id];
    }else{
        expander_open[id]=button;
        return "_opening";
    }
}

function button_on(id){
    /*
     * Highlight expander button as it was pressed
     */
    button=document.getElementById(id);

    for(c=button.parentNode.firstChild;c;c=c.nextSibling){
        if(c==button)continue;
        if(!c.style)continue;
        c.className='expanded_other';
    }

    button.className='expanded_this';
}

function button_off(id){
    /*
     * highlight expander button as it was released
     */
    button=document.getElementById(id);

    for(c=button.parentNode.firstChild;c;c=c.nextSibling){
        if(c==button)continue;
        if(!c.style)continue;
        c.className='not_expanded';
    }

    button.className='not_expanded';
}

function expand(id,step){
    /*
     * This adds a bit of animation. It would "grow" div over time. Use this on a temporary div,
     * so that when it's gone from the page, expanding effect will cease itself
     */
    if(step>200)return;
    expander=document.getElementById(id);
    if(!expander)return;
    expander.style.paddingBottom=step+"px";
    setTimeout("expand('"+id+"',"+(30+step)+")",50);
}

function expander_flip(name,id,button,expander_url){
    /*
     * This opens / closes lister's expander. Use this function
     * under 'onclick' for your table row. It will take care of
     * adding additional row and loading content there. expander_url is
     * a prefix, which will have id appended
     */

    row=document.getElementById(name+"_"+id);
    expander_status = expander_is_open(name,id,button);
    if(expander_status=="_closing"){
        nextrow=row.nextSibling;
        row.parentNode.removeChild(nextrow);

        button_off(name+"_"+button+"_"+id);
    }else if(expander_status=="inline_active"){
        inline_hide(name,id);
        expander_flip(name,id,button,expander_url);
    }else if(expander_status=="_opening"){

        
                tmp=document.getElementById(row.id);
                tmp=tmp.getElementsByTagName('TD');
                cs=0;
                while (tmp[cs] != null) cs++;
        newrow=document.createElement("tr");
        nextrow=row.nextSibling;
        if(!nextrow){
            row.parentNode.appendChild(newrow);
        }else{
            row.parentNode.insertBefore(newrow,nextrow);
        }
        /* -- rem by chk
        my_td=document.createElement("td");
        my_td.colspan=cs;
        -- /rem by chk*/
        
        /* TODO: here is some template-dependant stuff. It's better to move this thing
         * out. Not sure if the temporary thing can me removed easily, but the background
         * color should be customizable. And it's even better to use class names, BTW!
         */
//        bg="#FFFFFF";
        
        /* chk */
        //tmp = row./*parentNode.firstChild.*/childNodes;
        //alert(tmp.length);

                cll = newrow.insertCell(0);
        cll.style.backgroundColor = "#FFFFFF";
        cll.style.borderWidth = '0 1px 1px 1px';
        cll.style.borderColor = '#000';
        cll.style.borderStyle = 'solid';
        cll.style.padding = '15px';
        
        cll.colSpan = cs; //row.parentNode.firstChild.childNodes.length;
        
        //cll.id = name+"_expandedcontent_"+id;        
        cll.setAttribute('id', name+"_expandedcontent_"+id);
        
        cll.innerHTML = '<table cellspacing=0 cellpadding=0 border=0><tr><td valign=top><img alt="" src="'+am_loading+'"></td><td>&nbsp;</td><td class="smalltext" align=center id="autoexpander_'+id+'" valign=top><b>Loading. Stand by...</b></td></tr></table>';
        
        /* /chk */
       
        //newrow.innerHTML='<td style="background: '+bg+'; border: 1px solid black; border-top: 0px; padding: 15px" colspan="'+cs+'" id="'+name+"_expandedcontent_"+id+'" ><table cellspacing=0 cellpadding=0 border=0><tr><td valign=top><img src="'+am_loading+'"></td><td>&nbsp;</td><td class="smalltext" align=center id="autoexpander_'+id+'" valign=top><b>Loading. Stand by...</b></td></tr></table></td>';
        // http://dev.adevel.com/chk/fssub.html 
        // http://dev.adevel.com/chk/tmp/aaa&bbb=ccc
        
        aasn(name+"_expandedcontent_"+id, expander_url+id);
        
        //aasn(name+"_expandedcontent_"+id, 'http://php5.chk/freespech/admin/'+expander_url+id);
        expand('autoexpander_'+id,0);

        button_on(name+"_"+button+"_"+id);
    }else{
        /* other button is active. Close that one and open new one */
        expander_flip(name,id,expander_status,expander_url);
        expander_flip(name,id,button,expander_url);
    }
}
/******* InlineEdit functions ********/
function getInlineValue(inline_id){
        //var value=new String(document.getElementById(inline_id).innerHTML);
        /* stripping any tags from a value 
           initial string is: <font color="blue">Value</font>
        */
        //v=value.split(">");
        //now we have v=array(0=>'<font color="blue"', 1=>'Value</font'
        //value=new String(v[1]).split("<");
        //value='edt';
        //return value[0];
        return document.getElementById(inline_id).title;
}
function isKeyPressed(e, kCode){
        var characterCode;

        if(e && e.which)characterCode = e.which;
        else characterCode=e.keyCode;

        return characterCode == kCode;
}
function denyEnter(e){
        return !isKeyPressed(e, kReturn);
}

function modifierPressed(e){
 var ctrlPressed=0;
 var altPressed=0;
 var shiftPressed=0;

 if (parseInt(navigator.appVersion)>3) {

  var evt = navigator.appName=="Netscape" ? e:event;

  if (navigator.appName=="Netscape" && parseInt(navigator.appVersion)==4) {
   // NETSCAPE 4 CODE
   var mString =(e.modifiers+32).toString(2).substring(3,6);
   shiftPressed=(mString.charAt(0)=="1");
   ctrlPressed =(mString.charAt(1)=="1");
   altPressed  =(mString.charAt(2)=="1");
   self.status="modifiers="+e.modifiers+" ("+mString+")"
  }
  else {
   // NEWER BROWSERS [CROSS-PLATFORM]
   shiftPressed=evt.shiftKey;
   altPressed  =evt.altKey;
   ctrlPressed =evt.ctrlKey;
   self.status=""
    +  "shiftKey="+shiftPressed 
    +", altKey="  +altPressed 
    +", ctrlKey=" +ctrlPressed 
  }
 }
 result=new Array(ctrlPressed,altPressed,shiftPressed);
 return result;
}


function detect_ie()
{
        var agent=navigator.userAgent.toLowerCase();
        var i=agent.indexOf('msie');
        if (i!=-1) return parseFloat(agent.slice(i+5));
        else return false;
}


function detect_opera()
{
        var agent=navigator.userAgent.toLowerCase();
        var i=agent.indexOf('opera');
        if (i!=-1) return parseFloat(agent.slice(i+6));
        else return false;
}


function inline_process_key(e, name, id, activate_next){
//      alert(e+" "+name+" "+id+" "+activate_next);

        if(isKeyPressed(e, kEsc)){
                //submitting and hiding current inline
                inline_hide(name, id, 'cancel');
                return false;
        }
        if(isKeyPressed(e, kReturn)){
                //submitting and hiding current inline
                inline_hide(name, id, 'update');
                return false;
        }

        if(activate_next&&isKeyPressed(e, kTab)){
                this_row_id=name+'_'+id;
                row=document.getElementById(this_row_id);
                if(e.shiftKey||e.modifiers==4){
                        //shit is pressed, locating previous row
                        while(row.previousSibling){
                                row=row.previousSibling;
                                if(row.id&&row.id!=this_row_id)break;
                        }
                }else{
                        //no shift, locating next row
                        while(row.nextSibling){
                                row=row.nextSibling;
                                if(row.id)break;
                        }
                }
                if(row.id){ 
                        //we need to parse an ID from row.id
                        row_id=new String(row.id);
                        while(row_id.indexOf("_")!=-1)
                                row_id=row_id.substring(row_id.indexOf('_')+1);
                        //storing values cause they will be erased on hide
                        active_field=inline_active[name][id]['active_field'];
                        submit_url=inline_active[name][id]['submit_url'];
                        //submitting and hiding current inline
                        inline_hide(name, id, 'update');
                        //activating next inline
                        inline_show(name,active_field,row_id,submit_url,true,inline_active[name]['show_submit']);
                        return false;
                }
        }
        return true;
}

function htmlspecialchars(string, quote_style) {
    
    string = string.toString();
    
    // Always encode
    string = string.replace('/&/g', '&amp;');
    string = string.replace('/</g', '&lt;');
    string = string.replace('/>/g', '&gt;');
    
    // Encode depending on quote_style
    if (quote_style == 'ENT_QUOTES') {
        string = string.replace('/"/g', '&quot;');
        string = string.replace('/\'/g', '&#039;');
    } else if (quote_style != 'ENT_NOQUOTES') {
        // All other cases (ENT_COMPAT, default, but not ENT_NOQUOTES)
        string = string.replace('/"/g', '&quot;');
    }
    
    return string;
}

function inline_show(name,active_field,row_id,submit_url,activate_next,show_submit,on_submit_fun,on_cancel_fun){
        // changes row content to a forms with input elements
        // submit_url is an URL that should store changes from inline to DB
        // name is a name of a grid
        // active_field - inline control that should be set active
        // row_id - guess
        // on_submit_fun callback function that executes after Ok button handler executed 
        // on_cancel_fun callback function that executes after Cancel button handler executed
        inline_id=active_field+"_"+row_id;
        //closing all open expanders
        id=name+"_"+row_id;
        if(expander_open[id]){
                expander_flip(name,row_id,expander_open[id]);
        }
        //closing all active inlines
        if(inline_active[name]){
                for(i=0;i<inline_active[name].length;i++){
                        if(inline_active[name][i])
                                inline_hide(name,i);
                }
        }
        row=document.getElementById(id);
        if(!row)alert("Row is empty: "+row+"\nID used is: "+id);
        //counting columns      

        tmp=document.getElementById(row.id);
        tmp=tmp.getElementsByTagName('TD');
        cs=0;
        while (tmp[cs] != null) cs++;
        
        //changing row contents to the forms. only for inlines...
        col=document.getElementById(inline_id);
        var inline_collection=new Array();
        var index=0;
        //MS IE js works different to Mozilla: nextSibling does needed action erlier
        //so for IE we should delay switching to next sibling
        goback=col.id!=undefined;
                
                id=new String(col.id);
                if(id.indexOf('_inlinex')!=-1) { // extended inline element - ajax content loading
                        
                        var extend_url=id;
                        extend_url_arr = extend_url.split('_');
                        extend_url ='';
                        for(var i=1;i<extend_url_arr.length-1;i++) {
                                extend_url += ((i==1)?'':'_')+extend_url_arr[i];
                                
                        }
                        
                        extend_url += '&id='+extend_url_arr[extend_url_arr.length-1];

                        var form_name='form_'+id;
                        aasn(id,extend_url);
                        inline_collection[index]=form_name;
                        index++;
                } else  if(id.indexOf('_inline')!=-1){
                        var form_name='form_'+id;
                        
                        // setting input size to length of the text in it or 40 max
                        value=getInlineValue(id);
                        size=value.length+5;
                        if(size<6) size=6;
                        if(size>40) size=40;
                        
                        var key;
                        if (detect_ie() || detect_opera()){
                                key='onKeyDown';
                        }
                        else{
                                key='onKeyPress';
                        }
                        value=htmlspecialchars(value);
                        col.innerHTML='<form id="'+form_name+'" name="'+form_name+'" method="POST" onsubmit="return false;">'+
                                '<input id="'+form_name+'_edit" value="'+
                                value+'" size="'+size+'" maxlength="255" type="text" '+key+'="'+
                                'return inline_process_key(event,\''+name+'\','+row_id+','+activate_next+');"></form>';
                        inline_collection[index]=form_name;
                        index++;
                }
        if(show_submit){
                //expanding a row with submits
                newrow=document.createElement("tr");
                nextrow=row.nextSibling;
                if(!nextrow){
                    row.parentNode.appendChild(newrow);
                }else{
                    row.parentNode.insertBefore(newrow,nextrow);
                }
//              bg="#FFFFFF";  
        
                cll = newrow.insertCell(0);
                        cll.align='right';
                cll.style.backgroundColor = "#FFFFFF";
                cll.style.borderWidth = '0 1px 1px 1px';
                cll.style.borderColor = '#000';
                cll.style.borderStyle = 'solid';
                cll.style.padding = '1px';
                        cll.colSpan = cs; 
                
                if(typeof(on_submit_fun) == 'undefined') on_submit_fun = '';
                else on_submit_fun = ',\'' + on_submit_fun + '(\\\''+name+'\\\',\\\''+row_id+'\\\')\'';
                
                if(typeof(on_cancel_fun) == 'undefined') on_cancel_fun = '';
                else on_cancel_fun = ',\'' + on_cancel_fun + '(\\\''+name+'\\\',\\\''+row_id+'\\\')\'';
                
                event_handler="inline_hide('"+name+"',"+row_id+",'";
                cll.innerHTML='<form id="'+form_name+'" name="'+form_name+'" method="POST">'+
                        '<input type="button" value="OK" onclick="'+event_handler+'update\''+on_submit_fun+');">'+
                        '<input type="button" value="Cancel" onclick="'+event_handler+'cancel\''+on_cancel_fun+');">'+
                        '</form>';
        }
        
//selecting an edit
        try{
                        document.getElementById('form_'+inline_id+'_edit').focus();
                        document.getElementById('form_'+inline_id+'_edit').select();
        }catch(e){}
        
        
        //setting an array value for further hiding
        if(!inline_active[name])inline_active[name]=new Array();
        inline_active[name][row_id]=new Array();
        inline_active[name][row_id]['submit_url']=submit_url;
        inline_active[name][row_id]['inline_collection']=inline_collection;
        inline_active[name][row_id]['active_field']=active_field;
        inline_active[name]['show_submit']=show_submit;
}



function inline_hide(name, row_id, action, callback){
        //name is a grid name, id is a row id
        //processing inline: submit or cancel
        //callback - callback function with params
        submit_url=inline_active[name][row_id]['submit_url']+'&row_id='+row_id;
        inline_collection=inline_active[name][row_id]['inline_collection'];
        if(action){
                url=submit_url+'&action='+action;
        }else{
                url=submit_url+'&action=update';
        }
        reload_row=false;
        if(inline_collection){
                url_params="";
                for(i=0;i<inline_collection.length;i++){
                        field_name=new String(inline_collection[i]);
                        field_name=field_name.substring(name.length+6, field_name.indexOf('_inline'));
                        form=document.getElementById(inline_collection[i]);
                        if(form){
                                url_params+='&'+'field_'+field_name+'='+encodeURIComponent(form.elements[0].value);
                                //if form was not found - probably we moved to another page by some ajax action
                                //but, may be, it is a browser incompatibility...
                                reload_row=true;
                        }
                }
                url=url+url_params;
        }
        if(reload_row){
                reloadGridRow(url,name,row_id,callback, true, inline_active[name][row_id]['active_field'] + '_' + row_id);
                //aasn(name+'_'+row_id, url);
                if(inline_active[name]['show_submit']){
                        //hiding buttons
                        row=document.getElementById(name+'_'+row_id);
                        nextrow=row.nextSibling;
                        row.parentNode.removeChild(nextrow);
                }
        }
        inline_active[name][row_id]=false;
}




/******* TreeView functions *******/
function treenode_flip(expand,id,url){
        button=new String(document.getElementById('ec_'+id).innerHTML);
        cll=document.getElementById('p_'+id);
        if(expand==1)cll.innerHTML = '<table cellspacing=0 cellpadding=0 border=0><tr><td valign=top><img alt="" src="'+am_loading+'"></td><td>&nbsp;</td><td class="smalltext" align=center id="autoexpander_'+id+'" valign=top><b>Loading. Stand by...</b></td></tr></table>';

        aasn('p_'+id,url);
        
        if(expand==1){
                button=button.replace('plus.gif', 'minus.gif');
                button=button.replace('ec_action=expand', 'ec_action=collapse');
                button=button.replace('treenode_flip(1', 'treenode_flip(0');
        }else{
                button=button.replace('minus.gif', 'plus.gif');
                button=button.replace('ec_action=collapse', 'ec_action=expand');
                button=button.replace('treenode_flip(0', 'treenode_flip(1');
        }
        document.getElementById('ec_'+id).innerHTML=button;
}
// redraws a node specified and its branch
function treenode_refresh(id,url){
        aasn('p_'+id,url);
}

/******* MISC FUNCTIONS *******/
/**
 * Reloads a row of a Grid
 */
 
function reloadGridRow(url,name,row_id,callback,settitle, reload_col){
        //row contents could not be replaced with aasn
        set_row_c = function(response_text, response_xml){
                //exploding string to an array of column values
                cols=response_text.split('<row_end>');
                id=name+'_'+row_id;
                row=document.getElementById(id);
                col=row.firstChild;
                i=0;
                while(col){
                        if(col.innerHTML!=undefined){
                            if ((reload_col == undefined) || (col.id == reload_col)){
                                value=cols[i].split('<t>');
                                col.innerHTML=value[0];
                                if(settitle==true)col.title=value[1];
                                // value[2] contains styles separated by <s>
                                if(value[2]!=''){
                                        styles=value[2].split('<s>');
                                        for(j=0;j<styles.length;j++){
                                                // style cannot be assigned directly, 
                                                // so we analyze and set every property
                                                style=styles[j].split('::');
                                                switch(style[0]){
                                                        case 'color':
                                                                col.style.color=style[1];
                                                                break;
                                                        case 'cursor':
                                                                col.style.cursor=style[1];
																break;
														case 'title':
																col.title=style[1];
																break;
                                                }
                                        }
                                }
                            }
                            i++;
                        }
                        col=col.nextSibling;
                }
                try {
                        if(typeof(callback) != 'undefined') eval(callback);
                } catch(e) {
                        
                }
        }
        display_error = function(response_text,response_xml){
                alert(response_text);
        }
        aarq(url, set_row_c, display_error);
}
function w(url,width,height){
    window.open(url,'','width='+width+',height='+height+',scrollbars=yes,resizable=yes');
}

function ajax_done(){
    /* This function is called last from Ajax class. If this function is not called, then the whole output might contain
     * errors
     */
}
function w(url,width,height){
    window.open(url,'','width='+width+',height='+height+',scrollbars=yes,resizable=yes');
}
/**
 * Switches grouped field when given length is met
 */
function switchFieldOn(check_field_id, switchto_field_id, check_len){
        selected='';
        cf=document.getElementById(check_field_id);
        sf=document.getElementById(switchto_field_id);

        if (window.getSelection)   selected = cf.value.substring(cf.selectionStart, cf.selectionEnd);      
        else if (document.selection)   selected = document.selection.createRange().text;

        if (cf.value.length>=check_len && cf.value!=selected){
                sf.select();
                sf.focus();
                return false;
        }
}
/**
 * Checks if session is expired and forces redirect to login if so
 * Check is performed by a key string in the results of the aarq request to
 * the specified URL
 * In order for function not to find a key in self parameters, key is passed with
 * spaces replaced by = (equals sign). Make sure your key has spaces :)
 */
function checkSession(url,key){
        if(key==undefined)key='session is expired, relogin';
        // decoding encoded string
        else key=key.replace(/=/g,' ');
        var callback=function(response_text,response_xml){
                if(response_text.search(key)!=-1){
                        alert('Your session has expired. Please log in again.');
                        window.location='main.php';
                        return false;
                }
        }
        aarq(url, callback);
}

// Refreshes available months and days for date selector <
function refreshDateSelector(name) {
    
    // Get day select  <
    var days_select = document.getElementById(name + '_day');
    
    // get month and year value <
    var month = document.getElementById(name + '_month').value;
    var year = document.getElementById(name + '_year').value;
    
    // calculate max depending on year and month <
    var max_day;
    switch (month) {
        case '1', '3', '5', '7', '8', '10', '12' : {max_day = 31; break;}
        case '4', '6', '9', '11' : {max_day = 30; break;}
        case '2' : {max_day = (year % 4 ? 28 : 29); break;}
    }

    // Get options <
    var options = days_select.getElementsByTagName('option');
    
    // display all options except the one with the value <
    for (var i = 0; i < options.length; i++) {
        if (options.item(i).value > max_day) {
            options.item(i).style.display = "none";
        } else {
            options.item(i).style.display = "";
        }
    }
    
    // Make new selection if the currently selected is the hidden <
    if (days_select.value > max_day) {
        days_select.value = max_day;
    }
}
// enables or disables DateSelector on checkbox click
function switchDateSelector(control,name){
	var d=document;
	var day=d.getElementById(name+'_day');
	var month=d.getElementById(name+'_month');
	var year=d.getElementById(name+'_year'); 
	
	if(!control.checked){
		if(day)day.disabled=true;
		if(month)month.disabled=true;
		if(year)year.disabled=true;
	}else{
		if(day)day.disabled=false;
		if(month)month.disabled=false;
		if(year)year.disabled=false;
	}
}