/****

 Last Modified: 09/08/06 13:07:12



 GreyBox - Smart pop-up window

   Copyright Amir Salihefendic 2006

 AUTHOR

   4mir Salihefendic (http://amix.dk) - amix@amix.dk

 VERSION

	 3.45

 LICENSE

  GPL (read more in GPL.txt)

 SITE

  http://orangoo.com/labs/GreyBox/

****/

var GB_CURRENT = null;

var GB_ONLY_ONE = null;

GB_IMG_DIR = null;



function GreyBox() {

  //Use mutator functions (since the internal stuff may change in the future)

  this.type = "page";

  this.overlay_click_close = true;



  if(GB_IMG_DIR)

    this.img_dir = GB_IMG_DIR;

  else

    this.img_dir = "images/";



  this.overlay_color = "dark";



  this.center_window = false;



  this.g_window = null;

  this.g_container = null;

  this.iframe = null;

  this.overlay = null;

  this.timeout = null;



  this.defaultSize();

  this.showCloseImage(true);



  this.url = "";

  this.caption = "";



  this.callback_fn = [];

  this.reload_on_close = false;

}



////

// Configuration functions (the functions you can call)

//

/**

  Set the width and height of the GreyBox window.

  Images and notifications are auto-set.

  **/

GreyBox.prototype.setDimension = function(width, height) {

  this.height = height;

  this.width = width;

}



GreyBox.prototype.setFullScreen = function(bool) {

  this.full_screen = bool;

}



/**

  Type can be: page, image

  **/

GreyBox.prototype.setType = function(type) {

  this.type = type;

}



/**

  If bool is true the window will be centered vertically also

  **/

GreyBox.prototype.setCenterWindow = function(bool) {

  this.center_window = bool;

}



/**

  Set the path where images can be found.

  Can be relative: greybox/

  Or absolute: http://yoursite.com/greybox/

  **/

GreyBox.prototype.setImageDir = function(dir) {

  this.img_dir = dir;

}



GreyBox.prototype.showCloseImage = function(bool) {

  this.show_close_img = bool;

}



/**

  If bool is true the grey overlay click will close greybox.

  **/

GreyBox.prototype.setOverlayCloseClick = function(bool) {

  this.overlay_click_close = bool;

}



/**

  Overlay can either be "light" or "dark".

  **/

GreyBox.prototype.setOverlayColor = function(color) {

  this.overlay_color = color;

}



/**

  Set a function that will be called when GreyBox closes

  **/

GreyBox.prototype.setCallback = function(fn) {

  if(fn)

    this.callback_fn.push(fn);

}





////

// Show hide functions

//

/**

  Show the GreyBox with a caption and an url

  **/

GreyBox.prototype.show = function(caption, url) {

  GB_CURRENT = this;



  this.url = url;

  this.caption = caption;



  //Be sure that the old loader and dummy_holder are removed

  AJS.map(AJS.$bytc("div", "GB_dummy"), function(elm) { AJS.removeElement(elm) });

  AJS.map(AJS.$bytc("div", "GB_loader"), function(elm) { AJS.removeElement(elm) });

  

  //If ie, hide select, in others hide flash

  if(AJS.isIe())

    AJS.map(AJS.$bytc("select"), function(elm) {elm.style.visibility = "hidden"});

  AJS.map(AJS.$bytc("object"), function(elm) {elm.style.visibility = "hidden"});



  this.initOverlayIfNeeded();

  

  this.setOverlayDimension();

  AJS.showElement(this.overlay);

  this.setFullScreenOption();



  this.initIfNeeded();



  AJS.hideElement(this.g_window);



  AJS.ACN(this.g_container, this.iframe);



  if(caption == "")

    caption = " ";

  this.div_caption.innerHTML = caption;



  AJS.showElement(this.g_window)



  this.setVerticalPosition();

  this.setWidthNHeight();

  this.setTopNLeft();



  GB_CURRENT.startLoading();



  return false;

}



GreyBox.prototype.hide = function() {

  AJS.hideElement(this.g_window, this.overlay);



  try{ AJS.removeElement(this.iframe); }

  catch(e) {}



  this.iframe = null;



  if(this.type == "image") {

    this.width = 200;

    this.height = 200;

  }



  if(AJS.isIe()) 

    AJS.map(AJS.$bytc("select"), function(elm) {elm.style.visibility = "visible"});

  AJS.map(AJS.$bytc("object"), function(elm) {elm.style.visibility = "visible"});



  var c_bs = GB_CURRENT.callback_fn;

  if(c_bs != []) {

    AJS.map(c_bs, function(fn) { 

      fn();

    });

  }



  GB_CURRENT = null;



  if(this.reload_on_close)

    window.location.reload();

}



/** 

  If you only use one instance of GreyBox

  **/

GB_initOneIfNeeded = function() {

  if(!GB_ONLY_ONE) {

    GB_ONLY_ONE = new GreyBox();

  }

}



GB_show = function(caption, url, /* optional */ height, width, callback_fn) {

  GB_initOneIfNeeded();

  GB_ONLY_ONE.defaultSize();

  GB_ONLY_ONE.setFullScreen(false);

  GB_ONLY_ONE.setType("page");

  GB_ONLY_ONE.setCallback(callback_fn);

  GB_ONLY_ONE.setDimension(width, height);

  GB_ONLY_ONE.show(caption, url);

  return false;

}



GB_showFullScreen = function(caption, url, /* optional */ callback_fn) {

  GB_initOneIfNeeded();

  GB_ONLY_ONE.defaultSize();

  GB_ONLY_ONE.setType("page");



  GB_ONLY_ONE.setCallback(callback_fn);

  GB_ONLY_ONE.setFullScreen(true);

  GB_ONLY_ONE.show(caption, url);

  return false;

}



GB_showImage = function(caption, url) {

  GB_initOneIfNeeded();

  GB_ONLY_ONE.defaultSize();

  GB_ONLY_ONE.setFullScreen(false);

  GB_ONLY_ONE.setType("image");



  GB_ONLY_ONE.show(caption, url);

  return false;

}



GB_hide = function() {

  GB_CURRENT.hide();

}



/**

  Preload all the images used by GreyBox. Static function

  **/

GreyBox.preloadGreyBoxImages = function(img_dir) {

  var pics = [];



  if(!img_dir)

    img_dir = GB_IMG_DIR;



  var fn = function(path) { 

    var pic = new Image();

    pic.src = GB_IMG_DIR + path;

    pics.push(pic);

  };

  AJS.map(['pop-panel-bg.gif', 'indicator.gif', 'blank.gif', 'close.gif', 'header_bg.gif', 'overlay_light.png', 'overlay_dark.png'], AJS.$b(fn, this));

}





////

// Internal functions

//

GreyBox.prototype.getOverlayImage = function() {

  return "overlay_" + this.overlay_color + ".png";

};



/**

  Init functions

  **/

GreyBox.prototype.initOverlayIfNeeded = function() {

  //Create the overlay

  this.overlay = AJS.DIV({'id': 'GB_overlay'});

  if(AJS.isIe()) {

    this.overlay.style.backgroundColor = "#000000";

    this.overlay.style.backgroundColor = "transparent";

    this.overlay.style.backgroundImage = "url("+ this.img_dir +"blank.gif)";

    this.overlay.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.img_dir + this.getOverlayImage() + "',sizingMethod='scale')";

  }

  else 

    this.overlay.style.backgroundImage = "url("+ this.img_dir + this.getOverlayImage() +")";



  if(this.overlay_click_close)

    AJS.AEV(this.overlay, "click", GB_hide);



  AJS.getBody().insertBefore(this.overlay, AJS.getBody().firstChild);

};



GreyBox.prototype.initIfNeeded = function() {

  this.init();

  this.setWidthNHeight = AJS.$b(this.setWidthNHeight, this);

  this.setTopNLeft = AJS.$b(this.setTopNLeft, this);

  this.setFullScreenOption = AJS.$b(this.setFullScreenOption, this);

  this.setOverlayDimension = AJS.$b(this.setOverlayDimension, this);



  GreyBox.addOnWinResize(this.setWidthNHeight, this.setTopNLeft, this.setFullScreenOption, this.setOverlayDimension);



  this.g_container.style.marginBottom = "-3px";



  var fn = function() { 

    this.setOverlayDimension();

    this.setVerticalPosition(); 

    this.setTopNLeft();

    this.setWidthNHeight(); 

  };

  AJS.AEV(window, "scroll", AJS.$b(fn, this));



  if(!this.iframe) {

    var new_frame;

    var d = {'name': 'GB_frame', 'class': 'GB_frame', 'frameBorder': 0};

    new_frame = AJS.IFRAME(d);

    this.iframe = new_frame;

    AJS.hideElement(this.iframe);

  }

}



GreyBox.prototype.init = function() {

  //Create the window

  this.g_window = AJS.DIV({'id': 'GB_window'});



  //Create the table structure

  var table = AJS.TABLE({'class': 'GB_t_frame', 'frameborder': 0});

  var tbody = AJS.TBODY();

  AJS.ACN(table, tbody);



  //Midlle

  var td_middle_m = AJS.TD({'class': 'GB_content'});

  this.td_middle_m = td_middle_m;



  AJS.ACN(tbody, AJS.TR(td_middle_m));



  //Append caption and close

  var header = AJS.TABLE({'class': 'GB_header'});

  this.header = header;



  var caption = AJS.TD({'class': 'GB_caption'});

  this.div_caption = caption;



  //header.style.backgroundImage = "url("+ this.img_dir +"header_bg.gif)";



  tbody_header = AJS.TBODY();

  var close = AJS.TD({'class': 'GB_close'});



  if(this.show_close_img) {

    var img_close = AJS.IMG({'src': this.img_dir + 'close.gif'});

    AJS.ACN(close, img_close, "");

    AJS.AEV(close, "click", GB_hide);

  }

  AJS.ACN(tbody_header, AJS.TR(caption, close));



  AJS.ACN(header, tbody_header);



  AJS.ACN(td_middle_m, header);



  //Container

  this.g_container = AJS.DIV({'class': 'GB_container'});

  AJS.ACN(td_middle_m, this.g_container);



  AJS.ACN(this.g_window, table);



  AJS.getBody().insertBefore(this.g_window, this.overlay.nextSibling);

}



GreyBox.prototype.startLoading = function() {

  //Start preloading the object

  this.iframe.src = this.img_dir + 'loader_frame.html';

  AJS.showElement(this.iframe);

}



/**

  Set dimension functions

  **/

GreyBox.prototype.setIframeWidthNHeight = function() {

  try{

    AJS.setWidth(this.iframe, this.width);

    AJS.setHeight(this.iframe, this.height);

  }

  catch(e) {

  }

}



GreyBox.prototype.setOverlayDimension = function() {

  var page_size = AJS.getWindowSize();

  if((navigator.userAgent.toLowerCase().indexOf("firefox") != -1))

   AJS.setWidth(this.overlay, "100%");

  else

   AJS.setWidth(this.overlay, page_size.w);



  var max_height = Math.max(AJS.getScrollTop()+page_size.h, AJS.getScrollTop()+this.height);

  if(max_height < AJS.getScrollTop())

    AJS.setHeight(this.overlay, max_height);

  else

    AJS.setHeight(this.overlay, AJS.getScrollTop()+page_size.h);

}



GreyBox.prototype.setWidthNHeight = function() {

  //Set size

  AJS.setWidth(this.g_window, this.width);

  AJS.setHeight(this.g_window, this.height);



  AJS.setWidth(this.g_container, this.width);

  AJS.setHeight(this.g_container, this.height);



  this.setIframeWidthNHeight();



  //Set size on components

  AJS.setWidth(this.td_middle_m, this.width+10);

}



GreyBox.prototype.setTopNLeft = function() {

  var page_size = AJS.getWindowSize();

  AJS.setLeft(this.g_window, ((page_size.w - this.width)/2)-13);



  if(this.center_window) {

    var fl = ((page_size.h - this.height) /2) - 15 + AJS.getScrollTop();

    AJS.setTop(this.g_window, fl);

  }

  else {

    if(this.g_window.offsetHeight < page_size.h)

      AJS.setTop(this.g_window, AJS.getScrollTop());

  }

}



GreyBox.prototype.setVerticalPosition = function() {

  var page_size = AJS.getWindowSize();

  var st = AJS.getScrollTop();

  if(this.g_window.offsetWidth <= page_size.h || st <= this.g_window.offsetTop) {

    AJS.setTop(this.g_window, st);

  }

}



GreyBox.prototype.setFullScreenOption = function() {

  if(this.full_screen) {

    var page_size = AJS.getWindowSize();



    overlay_h = page_size.h;



    this.width = Math.round(this.overlay.offsetWidth - (this.overlay.offsetWidth/100)*10);

    this.height = Math.round(overlay_h - (overlay_h/100)*10);

  }

}



GreyBox.prototype.defaultSize = function() {

  this.width = 300;

  this.height = 300;

}



////

// Misc.

//

GreyBox.addOnWinResize = function(funcs) {

  funcs = AJS.$A(funcs);

  AJS.map(funcs, function(fn) { AJS.AEV(window, "resize", fn); });

}