/* 
CAP21 interface javascript 
Copyright 2011, Fund for the City of New York
All rights reserved.

This source file is distributable subject to the terms of the
FCNY Open Source License. 
*/

// logo
var logo = { "version": "1.0", "img": "", "src": "" }
logo.mouseover = function( e ) {
  var area = e.src();
  var imgbase = area.id.substr( 8 );
  this.img.src = "/www-cap21/cap21-"+imgbase+"-logo.gif";
}
logo.mouseout = function( e ) {
  this.img.src = this.src;
}
logo.init = function() {
  if ( $("LogoMap") ) {
    this.img = $('LogoImg');
    this.src = this.img.src;
    iterateElementsByTagAndClassName( "area", "ro", $("LogoMap"), function( elements, i ) { 
      connect( elements[i], "onmouseover", logo, "mouseover" );
      connect( elements[i], "onmouseout", logo, "mouseout" );
    } );
    log("LogoMap Init");
  }
}
connect( window, "ondomload", logo, "init" );


// fonts
function fontSetup() {
  if ( $('Banner') ) {
    addElementClass( $('Banner'), "AkzidenzBold");
  }
  iterateElementsByTagAndClassName( "h1", null, $("Object"), function( elements, i ) { addElementClass( elements[i], "AkzidenzBold") } );
  iterateElementsByTagAndClassName( "h2", null, $("Object"), function( elements, i ) { addElementClass( elements[i], "AkzidenzBold") } );
  iterateElementsByTagAndClassName( "h3", null, $("Object"), function( elements, i ) { addElementClass( elements[i], "AkzidenzBold") } );
  iterateElementsByTagAndClassName( "h1", null, $("Footer"), function( elements, i ) { addElementClass( elements[i], "AkzidenzBold") } );
  iterateElementsByTagAndClassName( "h2", null, $("Footer"), function( elements, i ) { addElementClass( elements[i], "AkzidenzBold") } );
  iterateElementsByTagAndClassName( "p", "shortcut", $("Search"), function( elements, i ) { addElementClass( elements[i], "AkzidenzBold") } );
  iterateElementsByTagAndClassName( "h3", null, $("Navigation"), function( elements, i ) { 
    if ( hasElementClass( elements[i], "active" ) ) {
      addElementClass( elements[i], "AkzidenzBold");
    }
    else {
      addElementClass( elements[i], "Akzidenz");
    } 
  } );
  if ( $("Navigation") ) {
    iterateElementsByTagAndClassName( "h4", null, $("Navigation"), function( elements, i ) { 
      if ( hasElementClass( elements[i], "active" ) ) {
        addElementClass( elements[i], "AkzidenzBold");
      }
      else {
        addElementClass( elements[i], "Akzidenz");
      } 
    } );
  }
  Cufon.replace( getElementsByTagAndClassName( null, "AkzidenzBold"), { "fontFamily": "AkzidenzBold", "hover": true });
  Cufon.replace( getElementsByTagAndClassName( null, "Akzidenz"), { "fontFamily": "Akzidenz" });
  log("Fonts replaced");
}
connect( window, "ondomload", window, "fontSetup" );


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

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

slides.showslide = function ( id, first ) {
  var slide = $(id);
  if ( !slide ) return;
  // which show?
  var showindex = this.slides[ id ];
  if ( !showindex ) {
    log("Got slide but no registered show for it!");
    return;
  }
  
  // hide cover slide
  if( this.cover_slide ) {
    this.cover_slide.style.display = 'none';
  }
  
  if ( this.activeslides[ showindex ] ) {
    this.activeslides[ showindex ].style.display = 'none';
    signal( this.activeslides[ showindex ], "inactive" );
  }
  this.activeslides[ showindex ] = slide;
  this.activeslides[ showindex ].style.display = 'block';
  var videoid = getNodeAttribute( slide, "videoid" );
  if ( videoid && !first ) {
    log("Playing",videoid);
    window.setTimeout( "$('flowplayer"+videoid+"').DoPlay()", 1000 );
  }
  signal( this.activeslides[ showindex ], "active" )
}

slides.activeIcon = function ( e ) {
  var src = e.src();
  var icon = $( "t_"+src.id )
  addElementClass( icon, "active" );
  //log("Activated",src.id,"icon",icon.id);
}

slides.inactiveIcon = function ( e ) {
  var src = e.src();
  var icon = $( "t_"+src.id )
  removeElementClass( icon, "active" );
  //log("Deactivated",src.id);
}

slides.clickhandler = function ( e ) {
  if ( e.mouse().button["left"]==true ) {
    e.stop();
    var target = e.src();
    if ( target.tagName!="A" ) return;
    target.blur();
    var id = target.hash.substr(1);
    this.showslide( id );
  }
}

slides.navhandler = function ( e ) {
  var target = e.target();
  if ( target.tagName=="IMG" ) {
    target = target.parentNode;
  }
  if ( target.tagName!="A" ) return;
  if ( hasElementClass( target, "pagenav") ) return;
  e.stop();
  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 ( "div", "slide", slideshow, function( navs, i ) {
    logDebug( "Found slidenav",navs[i], slides.activeslides );
    connect( navs[i], "onclick", slides, "navhandler" );
  });
  // find slideholder links
  iterateElementsByTagAndClassName ( "a", "slidenav", slideshow, function( navs, i ) {
    logDebug( "Found slidenav",navs[i], slides.activeslides );
    connect( navs[i], "onclick", slides, "clickhandler" );
  });
  
  // find cover
  this.cover_slide = getFirstElementByTagAndClassName("div", "cover", slideshow);

  // set activeslide
  this.activeslides[ this.showindex ] = false;
  // map slides to this slideshow
  var allslides = getElementsByTagAndClassName( "div", "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];
    }
  }
  log("Found",mylength,"slides, showing first.");
  if( this.cover_slide == null ) {
    this.showslide( allslides[0].id, true );
  }
}

slides.factory = function() {
  var shows = getElementsByTagAndClassName( "div", "show", $("Canvas") );
  var showslength = shows.length;
  logDebug("shows:", shows);
  for ( var s=0; s < showslength; s++ ) {
    slides.init( shows[s] );
  }
  var medias = getElementsByTagAndClassName( "div", "media", $("Canvas") );
  var mediaslength = medias.length;
  logDebug("medias:", medias);
  for ( var s=0; s < mediaslength; s++ ) {
    slides.init( medias[s] );
  }
  // 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" ) ) {
      log("Showing slide on this page",id);
      this.showslide( id, true );
    }
  }
}

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" );

// calendar helper
cal = { "version": "1.0", "active": false }
cal.display = function( id ) {
  if ( $(id) ) {
    if ( this.active ) {
      this.close( this.active.id );
    }
    this.active = $(id);
    $(id).style.display = "block";
    if ( $(id+"_cell") ) {
      addElementClass( $(id+"_cell"), "active" );
    }
  }
}
cal.close = function( id ) {
  if ( $(id) ) {
    if ( this.active ) {
      this.active.style.display = "none";
      this.active = false;
    }
    $(id).style.display = "none";
    if ( $(id+"_cell") ) {
      removeElementClass( $(id+"_cell"), "active" );
    }
  }
}
cal.init = function() {
  if ( $_GET["date"] ) {
    log("Requested date", $_GET["date"]);
    this.display( $_GET["date"] );
  }
  else {
    // look for today
    iterateElementsByTagAndClassName( "td", "today", $("Calendar"), function( elements, i ) { cal.display( elements[i].id.substr(0, 10) ) } );
  }
}
connect( window, "onload", cal, "init" );