// This file is part of Shutter Reloaded WordPress plugin. For standalone version visit http://www.laptoptips.ca/javascripts/shutter-reloaded/

if (typeof shutterOnload == 'function') {
  var shutterLinks = {}, shutterSets = {};
  oldonload = window.onload;
  if( typeof window.onload != 'function' ) window.onload = shutterOnload;
  else window.onload = function(){shutterOnload();if(oldonload){oldonload();}};
}

shutterReloaded = {

  I : function (a) {
    return document.getElementById(a);
  },
  
  L10n : shL10n,
  imageCount : shImageCount,
  textBtns : shTextBtns,
  shImgDir : shImgDir,

  Init : function (a) {
    var L, T, shtype, i, setid, inset, shfile, shMenuPre, k, img;
    for ( i = 0; i < document.links.length; i++ ) {
      L = document.links[i];
      shtype = L.href.slice(-4).toLowerCase();
      if ( shtype != '.jpg' && shtype != '.png' && shtype != '.gif' && shtype != 'jpeg' ) continue;
      if ( a == 'sh' && L.className.toLowerCase().indexOf('shutter') == -1 ) continue;
      if ( a == 'lb' && L.rel.toLowerCase().indexOf('lightbox') == -1 ) continue;
      
      if ( L.className.toLowerCase().indexOf('shutterset') != -1 ) 
        setid = ( L.className.indexOf(' ') != -1 ) ? L.className.slice(0,L.className.indexOf(' ')) : L.className;
      else if ( L.rel.toLowerCase().indexOf('lightbox[') != -1 ) 
        setid = L.rel;
      else setid = 0, inset = -1;
      
      if( setid ) {
        if ( ! shutterSets[setid] ) shutterSets[setid] = []; 
        inset = shutterSets[setid].push(i);
      }
      
      shfile = L.href.slice(L.href.lastIndexOf('/')+1);
      T = ( L.title && L.title != shfile ) ? L.title : '';
      
      shutterLinks[i] = {link:L.href,num:inset,set:setid,title:T}
      L.onclick = new Function('shutterReloaded.Make("'+i+'");return false;');
    }
    
    if ( ! this.textBtns ) {
      shMenuPre = ['close.gif','prev.gif','next.gif','resize1.gif','resize2.gif','loading.gif'];
      for ( k = 0; k < shMenuPre.length; k++ ) {
        img = new Image();
        img.src = this.shImgDir+shMenuPre[k];
      }
    }
  },

  Make : function(ln,fs) {
    var prev, next, prevlink = '', nextlink = '', previmg, nextimg, prevbtn, nextbtn, D, S, W, NB, fsarg = '', imgNum, closebtn, fsbtn, fsLink;

    if ( ! this.Top ) {
      if ( typeof window.pageYOffset != 'undefined' ) this.Top = window.pageYOffset;
      else this.Top = (document.documentElement.scrollTop > 0) ? document.documentElement.scrollTop : document.body.scrollTop;
    }
    
    if ( typeof this.pgHeight == 'undefined' ) 
      this.pgHeight = Math.max(document.documentElement.scrollHeight,document.body.scrollHeight);
    
    if ( fs ) this.FS = true;
    else this.FS = null;
    
    if ( this.resizing ) this.resizing = null;
    window.onresize = new Function('shutterReloaded.Resize("'+ln+'");');
    
    document.documentElement.style.overflowX = 'hidden';
    if ( ! this.VP ) {
      this._viewPort();
      this.VP = true;
    }
    
    if ( ! (S = this.I('shShutter')) ) {
      S = document.createElement('div');
      S.setAttribute('id','shShutter');
      document.getElementsByTagName('body')[0].appendChild(S);
      this.hideTags();
    }

    if ( ! (D = this.I('shDisplay')) ) {
      D = document.createElement('div');
      D.setAttribute('id','shDisplay');
      D.style.top = this.Top + 'px';
      document.getElementsByTagName('body')[0].appendChild(D);
    }

    S.style.height = this.pgHeight + 'px';    
    
    var dv = this.textBtns ? ' | ' : '';
    if ( shutterLinks[ln].num > 1 ) {
      prev = shutterSets[shutterLinks[ln].set][shutterLinks[ln].num - 2];
      prevbtn = this.textBtns ? this.L10n[0] : '<img src="'+this.shImgDir+'prev.gif" title="'+this.L10n[0]+'" />';
      prevlink = '<a href="#" onclick="shutterReloaded.Make('+prev+');return false">'+prevbtn+'</a>'+dv;
      previmg = new Image();
      previmg.src = shutterLinks[prev].link;
    }
    
    if ( shutterLinks[ln].num != -1 && shutterLinks[ln].num < (shutterSets[shutterLinks[ln].set].length) ) {
      next = shutterSets[shutterLinks[ln].set][shutterLinks[ln].num];
      nextbtn = this.textBtns ? this.L10n[1] : '<img src="'+this.shImgDir+'next.gif" title="'+this.L10n[1]+'" />';
      nextlink = '<a href="#" onclick="shutterReloaded.Make('+next+');return false">'+nextbtn+'</a>'+dv;
      nextimg = new Image();
      nextimg.src = shutterLinks[next].link;
    }
    
    closebtn = this.textBtns ? this.L10n[2] : '<img src="'+this.shImgDir+'close.gif" title="'+this.L10n[2]+'" />';
    
    imgNum = ( (shutterLinks[ln].num > 0) && this.imageCount ) ? ' '+this.L10n[5]+'&nbsp;'+shutterLinks[ln].num+'&nbsp;'+this.L10n[6]+'&nbsp;'+shutterSets[shutterLinks[ln].set].length : '';

    if ( this.FS ) {
      fsbtn = this.textBtns ? this.L10n[4] : '<img src="'+this.shImgDir+'resize2.gif" title="'+this.L10n[4]+'"  />';
    } else {
      fsbtn = this.textBtns ? this.L10n[3] : '<img src="'+this.shImgDir+'resize1.gif" title="'+this.L10n[3]+'" />';
      fsarg = ',1';
    }
    
    fsLink = '<span id="fullSize"><a href="#" onclick="shutterReloaded.Make('+ln+fsarg+');return false">'+fsbtn+'</a>'+dv+'</span>';
    
    if ( ! (NB = this.I('shNavBar')) ) {
      NB = document.createElement('div');
      NB.setAttribute('id','shNavBar');
      document.getElementsByTagName('body')[0].appendChild(NB);
    }
    
    NB.innerHTML = dv+prevlink+'<a href="#" onclick="shutterReloaded.hideShutter();return false">'+closebtn+'</a>'+dv+nextlink+fsLink+imgNum;
    
    D.innerHTML = '<div id="shWrap"><img src="'+shutterLinks[ln].link+'" id="shTopImg" onload="shutterReloaded.ShowImg();" onclick="shutterReloaded.hideShutter();" /><div id="shTitle">'+shutterLinks[ln].title+'</div></div>';
    
    window.setTimeout(function(){shutterReloaded.loading();},2000);
  },
  
  loading : function() {
    var S, WB, W;
    if ( (W = this.I('shWrap')) && W.style.visibility == 'visible' ) return;
    if ( ! (S = this.I('shShutter')) ) return;
    if ( this.I('shWaitBar') ) return;
    WB = document.createElement('div');
    WB.setAttribute('id','shWaitBar');
    WB.style.top = this.Top + 'px';
    WB.innerHTML = '<img src="'+this.shImgDir+'loading.gif" title="'+this.L10n[7]+'" />';
    S.appendChild(WB);
  },
  
  hideShutter : function() {
    var D, S, NB;
    if ( D = this.I('shDisplay') ) D.parentNode.removeChild(D);
    if ( S = this.I('shShutter') ) S.parentNode.removeChild(S);
    if ( NB = this.I('shNavBar') ) NB.parentNode.removeChild(NB);
    this.hideTags(true);
    window.scrollTo(0,this.Top);
    window.onresize = this.FS = this.Top = this.VP = null;
    document.documentElement.style.overflowX = '';
  },

  Resize : function(ln) {
    if ( this.resizing ) return;
    if ( ! this.I('shShutter') ) return;
    var W = this.I('shWrap');
    if ( W ) W.style.visibility = 'hidden';
    
    window.setTimeout(function(){shutterReloaded.resizing = null},500);
    window.setTimeout(new Function('shutterReloaded.VP = null;shutterReloaded.Make("'+ln+'");'),100);
    this.resizing = true;
  },
  
  _viewPort : function() {
    var wiH = window.innerHeight ? window.innerHeight : 0;
    var dbH = document.body.clientHeight ? document.body.clientHeight : 0;
    var deH = document.documentElement ? document.documentElement.clientHeight : 0;
      
    if( wiH > 0 ) {
      this.wHeight = ( (wiH - dbH) > 1 && (wiH - dbH) < 30 ) ? dbH : wiH;
      this.wHeight = ( (this.wHeight - deH) > 1 && (this.wHeight - deH) < 30 ) ? deH : this.wHeight;
    } else this.wHeight = ( deH > 0 ) ? deH : dbH;

    var deW = document.documentElement ? document.documentElement.clientWidth : 0;
    var dbW = window.innerWidth ? window.innerWidth : document.body.clientWidth;
    this.wWidth = ( deW > 1 ) ? deW : dbW;
  },
  
  ShowImg : function() {
    var S, W, WB, D, T, TI, NB, wHeight, wWidth, capH, shHeight, maxHeight, itop, mtop, resized = 0;
    S = this.I('shShutter');
    if ( ! S ) return;

    if ( (W = this.I('shWrap')) && W.style.visibility == 'visible' ) return;
    if ( WB = this.I('shWaitBar') ) WB.parentNode.removeChild(WB);
    
    D = this.I('shDisplay');
    TI = this.I('shTopImg');
    T = this.I('shTitle');
    NB = this.I('shNavBar');
    S.style.width = D.style.width = '';
    T.style.width = (TI.width - 4) + 'px';
    
    capH = NB.offsetHeight ? T.offsetHeight + NB.offsetHeight : 30;
    shHeight = this.wHeight - 7 - capH;

    if ( this.FS ) {
      if ( TI.width > (this.wWidth - 10) ) 
        S.style.width = D.style.width = TI.width + 10 + 'px';
        document.documentElement.style.overflowX = '';
    } else {
      window.scrollTo(0,this.Top);
      if ( TI.height > shHeight ) {
        TI.width = TI.width * (shHeight / TI.height);
        TI.height = shHeight;
        resized = 1;
      }
      if ( TI.width > (this.wWidth - 16) ) {
        TI.height = TI.height * ((this.wWidth - 16) / TI.width);
        TI.width = this.wWidth - 16;
        resized = 1;
      }
      T.style.width = (TI.width - 4) + 'px';
      NB.style.bottom = '0px';
    }

    maxHeight = this.Top + TI.height + capH + 10;
    if ( maxHeight > this.pgHeight ) S.style.height = maxHeight + 'px'; 
    window.scrollTo(0,this.Top);
    if ( (this.FS && (TI.height > shHeight || TI.width > this.wWidth)) || resized ) this.I('fullSize').style.visibility = 'visible';
    
    itop = (shHeight - TI.height) * 0.45;
    mtop = (itop > 3) ? Math.floor(itop) : 3;
    D.style.top = this.Top + mtop + 'px';
    NB.style.bottom = '0';
    W.style.visibility = 'visible';
  },

  hideTags : function(arg) {
	var sel = document.getElementsByTagName('select');
	var obj = document.getElementsByTagName('object');
	var emb = document.getElementsByTagName('embed');
    var ifr = document.getElementsByTagName('iframe');

    var vis = ( arg ) ? 'visible' : 'hidden';
    
    for (i = 0; i < sel.length; i++) sel[i].style.visibility = vis;
    for (i = 0; i < obj.length; i++) obj[i].style.visibility = vis;
    for (i = 0; i < emb.length; i++) emb[i].style.visibility = vis;
    for (i = 0; i < ifr.length; i++) ifr[i].style.visibility = vis;
  }
}