/**
 * poetry society javascript include
 * Copyright 2009 Fund for the City of New York
 * 
 * This is free software. Use and distribution are subject to the terms
 * of the FCNY Open Source Software License. See license.txt, or
 * http://fred.fcny.org/fcny-ossl.txt
 */

function toggleShareThis( id ) {
  var st = $( id );
  if ( !st.open ) {
    st.open = true;
    st.style.display = "block";
  }
  else {
    st.style.display = "none";
    st.open = false;
  }
}

function sharePrint( id ) {
  // add printme to item (and its sidebars if necessary
  var items = iterateElementsByTagAndClassName( "div", "item", $("Object"), function( elements, i ) { 
    if( elements[i].id != id ) {
      addElementClass( elements[i], "noprint" );
    }
    else {
      removeElementClass( elements[i], "noprint" );
    }
  } );
  // printer stylesheet takes care of the rest
  window.print();  
}

function citySelect( element ) {
  //log("Selected",element.value);
  $("FilterForm").submit();
}

// slides object
var slides = { "version":"2.0" }

slides.showindex = 0;
slides.activeslides = {};
slides.slides = {};

slides.showslide = function ( id ) {
  var slide = $(id);
  log("Show slide", id);
  if ( !slide ) return;
  // which show?
  var showindex = this.slides[ slide.id ];
  if ( !showindex ) {
    if ( slide.id.substr( 0, 5 )=="audio" ) {
      var audioid = slide.id.substr( 5 );
    }
    else {
      var audioid = "audio" + slide.id;
    }
    showindex = this.slides[ audioid ];
    //log("Show slide",id,"slide",slide,"audioid",audioid, "showindex",showindex);
    if ( !showindex ) {
      log("Got slide but no registered show for it! #",slide.id, "audioid", audioid);
      return;
    }
  }
  log("Got a show index",showindex,"and slide", slide,"#", slide.id);
  var aslide = this.activeslides[ showindex ];
  if ( aslide ) {
    if ( aslide.id.substr( 0, 5 )=='audio' ) {
      var aaudioid = aslide.id.substr( 5 );
      removeElementClass( $( aaudioid ), "active" );
      $( "icon"+aaudioid ).src = "/www-psa/images/audioiconinactive.png";
    }
    aslide.style.display = 'none';
    log( "Hiding",  aslide.id );
  }
  this.activeslides[ showindex ] = slide;
  if ( slide.tagName == "TR" ) {
    if ( slide.id.substr( 0, 5 )=='audio' ) {
      var audioid = slide.id.substr( 5 );
      addElementClass( $( slide.id.substr( 5 ) ), "active" );
      $( "icon"+audioid ).src = "/www-psa/images/audioiconactive.png";
    }
    slide.style.display = 'table-row';
    log("row display. showindex", showindex, "activeslide", slide, slide.id );
  } 
  else {
    slide.style.display = 'block';
  }
  var videoid = getNodeAttribute( slide, "videoid" );
  if ( videoid ) {
    // 2010-02-08 no autoplay
    // log("Playing",videoid);
    // window.setTimeout( "$('flowplayer"+videoid+"').DoPlay()", 1000 );
  }
  // load related?
  if ( slide.id.substr( 0, 5 )=="audio" ) {
    var relid = "related" + slide.id.substr( 5 );
  }
  else {
    var relid = "related" + slide.id;
  }
  if ( $(relid) ) {
    var relatedurl = getNodeAttribute( $(relid), "src" );
    if ( relatedurl ) {
      fcnyl.httpfill( relatedurl, relid );
      setNodeAttribute( $(relid), "src", "" );
    }
  }
}

slides.clickhandler = function ( e ) {
  e.stop();
  var target = e.src();
  log("click handler",target)
  if ( target.tagName!="A" ) return;
  target.blur();
  var id = target.hash.substr(1);
  this.showslide( id );
}

slides.navhandler = function ( e ) {
  e.stop();
  var target = e.target();
  log("nav handler",target)
  if ( target.tagName!="A" ) {
    target = e.src();
    if ( target.tagName!="A" ) {
      return;
    }
  }
  target.blur();
  var id = target.hash.substr(1);
  this.showslide( id );
}

slides.init = function( slideshow ) {
  this.showindex++;
  log("Init for slideshow",this.showindex,"with slideshow",slideshow);
  // find slidenav links
  iterateElementsByTagAndClassName ( "*", "slidenav", slideshow, function( navs, i ) {
    log( "Found slidenav",navs[i], slides.activeslides );
    connect( navs[i], "onclick", slides, "navhandler" );
  });
  // find slideholder links
  iterateElementsByTagAndClassName ( "a", "slideclick", slideshow, function( navs, i ) {
    log( "Found slideclick",navs[i], slides.activeslides );
    connect( navs[i], "onclick", slides, "clickhandler" );
  });
  // set activeslide
  this.activeslides[ this.showindex ] = false;
  // map slides to this slideshow
  var allslides = getElementsByTagAndClassName( "*", "slide", slideshow );
  var mylength = allslides.length;
  for ( var i=0; i < mylength; i++ ) {
    this.slides[ allslides[i].id ] = this.showindex;
    if ( hasElementClass( allslides[i], "cover") ) {
      this.activeslides[ this.showindex ] = allslides[i];
    }
  }
}

slides.factory = function() {
  var shows = getElementsByTagAndClassName( "div", "show", $("Canvas") );
  var showslength = shows.length;
  for ( var s=0; s < showslength; s++ ) {
    slides.init( shows[s] );
  }
  if ( $('Homeshow') ) {
    slides.init( $('Homeshow') );
  }
  // show a different slide if requested
  if ( window.location.hash ) {
    var id = window.location.hash.substr(1);
    var isslide = $(id);
    if ( isslide && ( hasElementClass( isslide, "slide" ) || hasElementClass( isslide, "slideproxy" ) ) ) {
      if ( hasElementClass( isslide, "slideproxy" ) ) {
        isslide = $( "audio" + isslide.id );
      }
      log("Showing slide on this page",isslide.id);
      this.showslide( isslide  );
    }
  }
  else {
    if ( this.activeslides[1] ) {
      this.showslide( this.activeslides[1] );
    }
  }
}
connect( window, "ondomload", slides, "factory" );

// lightbox for previews and thumbnails
var lightbox = { "version": "1.2", "counter": 0, "images": [] }

lightbox.previewClick = function( e ) {
  e.stop();
  var preview = e.src();
  var lb_id = getNodeAttribute( preview, "lightbox_id" );
  var rawimage = $( "lightbox_" + lb_id );
  if ( rawimage.lightbox===undefined ) {
    if ( !rawimage.width ) {
      var width = rawimage.currentStyle.width.substring( 0, rawimage.currentStyle.width.indexOf("px") );
      var height = rawimage.currentStyle.height.substring( 0, rawimage.currentStyle.height.indexOf("px") );
    }
    else {
      var width = rawimage.width;
      var height = rawimage.height;
    }
    rawimage.lightbox = { "w": width, "h": height };
  }
  else {
    var width = rawimage.lightbox.w;
    var height = rawimage.lightbox.h;
  }
  // get viewport size, and resize image (reduce only) to fit
  var winsize = getViewportDimensions();
  // take 16 off for scrollbars
  winsize.w = winsize.w - 16;
  if ( winsize.w < 1024 ) {
    winsize.h = winsize.h - 16;
  }
  var targetw = winsize.w - 20;
  var targeth = winsize.h - 20;
  if ( width > targetw ) {
    var ratio = targetw / width;
    width = targetw;
    height = Math.floor( height * ratio );
  }
  if ( height > targeth ) {
    var ratio = targeth / height;
    height = targeth;
    width = Math.floor( width * ratio );
  }
  // set position in window
  if ( window.pageYOffset===undefined ) {
    var scrolledto = document.documentElement.scrollTop;
  }
  else {
    var scrolledto = window.pageYOffset;
  }
  var posx = ( winsize.w - width ) / 2;
  if ( posx < 10 ) posx = 10;
  var posy = ( winsize.h - height ) / 3;
  if ( posy < 10 ) posy = 10;
  posy = posy + scrolledto;
  log( "Winsize", winsize, "scrolled to", scrolledto, "rawimage size", rawimage.lightbox.w,"x",rawimage.lightbox.h,"final position", posx,"x",posy, "final size",width,"x",height );
  rawimage.style.left = posx+"px";
  rawimage.style.top = posy+"px";
  rawimage.style.width = width+"px";
  rawimage.style.height = height+"px";
  if ( rawimage && hasElementClass( rawimage, "loaded" ) ) {
    addElementClass( rawimage, "active" );
    addElementClass( $("top"), "lightbox" );
    //ScrollTo( rawimage );
    log("click",preview,"lb_id", lb_id);
  }
  else {
    log( "no rawimage or not loaded" );
  }
}
lightbox.rawimageClick = function( e ) {
  e.stop();
  var rawimage = e.src();
  var origid = getNodeAttribute( rawimage, "original_id" );
  var orig = $( origid );
  removeElementClass( $("top"), "lightbox" );
  //ScrollTo( orig );
  removeElementClass( rawimage, "active" );
}
lightbox.rawImageLoad = function( e ) {
  e.stop();
  var rawimage = e.src();
  if ( !rawimage.complete ) {
    // not complete
    window.setTimeout('lightbox.rawImagePostLoad("'+rawimage.id+'")', 1000);
  }
  else {
    lightbox.rawImagePostLoad( rawimage.id );
  }
}
lightbox.rawImagePostLoad = function( rawimageid ) {
  var rawimage = $( rawimageid );
  if ( !rawimage.width ) {
    var width = rawimage.currentStyle.width.substring( 0, rawimage.currentStyle.width.indexOf("px") );
    var height = rawimage.currentStyle.height.substring( 0, rawimage.currentStyle.height.indexOf("px") );
  }
  else {
    var width = rawimage.width;
    var height = rawimage.height;
  }
  // check to see that rawimage is bigger than original in width or height
  var origid = getNodeAttribute( rawimage, "original_id" );
  var orig = $( origid );
  if ( orig.width >= width && orig.height >= height ) {
    // do not lightbox
    removeElementClass( orig, "lightbox" );
    disconnect( orig.lightboxclick );
    log("No lightbox for",orig.id,"since raw image is smaller");
  }
  else {
    if ( !getNodeAttribute( orig, "title" ) ) {
      setNodeAttribute( orig, "title", "Click to view full size." );
    }
    addElementClass( orig, "loaded" );
    addElementClass( rawimage, "loaded" );
    connect( rawimage, "onclick", lightbox, "rawimageClick" );
  }
}
lightbox.init = function() {
  iterateElementsByTagAndClassName ( "img", null, $("Object"), function( images, i ) {
    // if image src includes token preview or thumbnail
    if ( images[i].src.indexOf( "preview" ) > -1 || images[i].src.indexOf( "thumbnail" ) > -1 ) {
      // make sure preview is last namepart
      var names = images[i].src.split( "/" );
      var lastname = names.pop();
      // check for nolightbox on image and 2 parents
      if ( hasElementClass(images[i], "nolightbox") || hasElementClass(images[i].parentNode, "nolightbox") || hasElementClass(images[i].parentNode.parentNode, "nolightbox") ) {
        return;
      }
      // check for link tag in 3 parents
      if ( images[i].parentNode.tagName=="A" || images[i].parentNode.parentNode.tagName=="A" || images[i].parentNode.parentNode.parentNode.tagName=="A" ) {
        return;
      }
      if ( ( lastname.indexOf( "preview" )==0 || lastname.indexOf( "thumbnail" )==0 ) ) {
        // connect onclick and add lightbox class
        lightbox.counter ++;
        if ( !images[i].id ) {
          images[i].id = "lightbox_original_" + lightbox.counter;
          log("Assigned id to images",i,",",images[i].id);
        }
        images[i].lightboxclick = connect( images[i], "onclick", lightbox, "previewClick" );
        addElementClass( images[i], "lightbox" );
        setNodeAttribute( images[i], "lightbox_id", lightbox.counter );
        var rawname = names.join("/") + ".jpg";
        var rawimage = IMG( { "id": "lightbox_"+lightbox.counter, "src": rawname, "class": "rawimage", "title": "Click again to close image", "original_id": images[i].id } );
        connect( rawimage, "onload", lightbox, "rawImageLoad" );
        $("top").appendChild( rawimage );
      }
    }
  });
  log("Lightbox set up for",lightbox.counter,"images");
}

connect( window, "onload", lightbox, "init" );