// ////////////////////////////////////////////////////////////////////////////

// Symbian Foundation Example Code

//

// This software is in the public domain. No copyright is claimed, and you 

// may use it for any purpose without license from the Symbian Foundation.

// No warranty for any purpose is expressed or implied by the authors or

// the Symbian Foundation. 

// ////////////////////////////////////////////////////////////////////////////

var logEnabled = true;

// Opens a URL in a separate browser window

function openURL(url) {

    if (window.widget) {

        // in WRT

        widget.openURL(url);

    } else {

        // outside WRT

        window.open(url, "NewWindow");

    }

}

function increaseFontSize(){

    if (window.widget) {

		setCssBodyFontSize(currentFontSize + 2);

	}

}

function decreaseFontSize(){

    if (window.widget) {

		if (currentFontSize > 4) {

			setCssBodyFontSize(currentFontSize - 2);

		}

	}

}

function setCssBodyFontSize(size){

    if (window.widget) {

		currentFontSize = size;

		var sizestring = "" + size;

		document.body.style.fontSize = sizestring + "px";

		widget.setPreferenceForKey(sizestring, "fontsize");

	}

}

function log(txt) {

	if (logEnabled) {

//		txt = txt.replace(/</g, unescape("%26lt%3B")).replace(/>/g, unescape("%26gt%3B")); 

//		txt = txt.replace(/</g, "&lt");

//		txt = txt.replace(/\>/g, "&gt");

		document.getElementById("debugdiv").innerHTML = txt + "<br> " + document.getElementById("debugdiv").innerHTML;

	} 

}

function setupLog() {

	if (logEnabled) {

		if (window.widget) {

			var logMenuItem = new MenuItem("Toggle log", 99);

			logMenuItem.onSelect = function() {

				var div = document.getElementById("debugdiv");

				var main = document.getElementById("uimandiv");

				if ( div.style.display == "none" ) {

					div.style.display = "";

					main.style.display = "none";

				} else {

					div.style.display = "none";

					main.style.display = "";

				}

			}

			menu.append(logMenuItem);

		}

	}

}

function shorten(text, len) {

	if ( text.length < len + 3 ) return text;

	return text.substring(0,len) + "...";

}

function uniDecode(text) {

	var ptr = 0;

	var buf = "";

	while ( ptr < text.length ){

		if ( text.charAt(ptr) == '%' ) {

			// read next two chars and interpret as hex UTF-8 char code

			var hex = "";

			ptr ++;

			hex += text.charAt(ptr) ;

			ptr ++;

			hex += text.charAt(ptr) ;

			var ccode = unhex(hex);

			// decode utf-8

			if (ccode < 128) { // 1 byte char

				buf += String.fromCharCode(ccode);

				ptr++;

			}

			else if((ccode > 191) && (ccode < 224)) { // 2 byte char 

				var hex2 = "";

				ptr ++; // move to % 

				ptr ++; // move to first hex digit 

				hex2 += text.charAt(ptr) ;

				ptr ++;

				hex2 += text.charAt(ptr) ;

				var ccode2 = unhex(hex2);

				// need more stuff to get char

				buf += String.fromCharCode(((ccode & 31) << 6) | (ccode2 & 63));

				ptr ++;

			}

			else {  // 3 byte char

				var hex2 = "";

				ptr ++; // move to % 

				ptr ++; // move to first hex digit 

				hex2 += text.charAt(ptr) ;

				ptr ++;

				hex2 += text.charAt(ptr) ;

				var ccode2 = unhex(hex2);

				var hex3 = "";

				ptr ++; // move to % 

				ptr ++; // move to first hex digit 

				hex3 += text.charAt(ptr) ;

				ptr ++;

				hex3 += text.charAt(ptr) ;

				var ccode3 = unhex(hex2);

				buf += String.fromCharCode(((ccode & 15) << 12) | ((ccode2 & 63) << 6) | (ccode3 & 63));

				ptr++;

			}

		} else {

			buf += text.charAt(ptr);

			ptr ++;

		}

	}

	return buf;

}

function unhex(hx) {

	var val = 0;

	for ( var i = 0 ; i < hx.length ; i ++ ) {

		val = val * 16;

		switch(hx.charAt(i)) {

			case '0': continue; 

			case '1':

			case '2':

			case '3':

			case '4':

			case '5':

			case '6':

			case '7':

			case '8':

			case '9': {

				val += parseInt(hx.charAt(i));

				break;

			}

			case 'A':

			case 'a':{

				val += 10;

				break;

			}

			case 'B':

			case 'b':{

				val += 11;

				break;

			}

			case 'C':

			case 'c':{

				val += 12;

				break;

			}

			case 'D':

			case 'd':{

				val += 13;

				break;

			}

			case 'E':

			case 'e':{

				val += 14;

				break;

			}

			case 'F':

			case 'f':{

				val += 15;

				break;

			}

		}

	}

	return val;

}

function shortFormatTime(ts) {

	var date = new Date(ts);

	var ret = "";

	ret += pad(2,"0", date.getDate());

	ret += "/";

	ret += pad(2,"0",(1+date.getMonth()));

	ret += " ";

	ret += pad(2,"0", date.getHours());

	ret += ":";

	ret += pad(2,"0",date.getMinutes());

	return ret;

}

function nocache(url) {

    if (url.indexOf("?") == -1) {

        url += "?";

    } else {

        url += "&";

    }

    url += "xnocache=" + (new Date().getTime());

	return url;

}

function pad(_num, _char, _val) {

	var buf = ""+ _val;

	while(buf.length < _num){

		buf = _char + "" + buf;

	}

//	alert("pad: num=" +num + ", char=" + char + ", val=" + val +", result=" +buf );

	return buf;

}

function getViewRep(view) {

	if ( view == null ) {

		return "null";

	} else if (view) {

		return view.caption;

	} else {

		return "undefined";

	}

}

function ViewCache(size) {

	this.size = size;

	this.names = new Array();

	this.views = new Array();

}

ViewCache.prototype.addView = function(name,view) {

	this.names.splice(0,0,name);

	this.views.splice(0,0,view);

	if (this.names.length > this.size) {

		this.names.splice(this.size, 1);

		this.views.splice(this.size, 1);

	}

}

ViewCache.prototype.getView = function(name){

	for ( var i = 0 ; i < this.names.length ; i++ ) {

		if ( name == this.names[i] ) {

			return this.views[i];

		}

	}

	return null;

}