Google Preview

preview.js

$(document).ready(function() {
  google.load("books", "0");

  var viewerHeight;
  var headerHeight;

  var btn = $('#viewerButton'); // Single ref.
  var viewer = $('#viewerContainer');

  function viewerInit() {
    // var header = $(document.body).down('.header');
    headerHeight = 40;
    viewerHeight = 700;

    var vDiv = $('#viewerCanvas');
    vDiv.css({
      height: viewerHeight + "px"
    });
    var gViewer = new google.books.DefaultViewer(
    vDiv.get(0), {
      'showLinkChrome': false
    });
    gViewer.load('ISBN:' + window.bookISBN, null, showButton);
  }


  function showButton() {
    btn.on("click", showViewer);
    btn.html("» Preview this book");
    btn.show('medium');
  }


  function showViewer() {
    // Unbind
    btn.off("click", showViewer);

    if (!window.noBookSlide) {
      viewer.animate({
        height: viewerHeight + "px"
      }, 400, function() {
        console.log("showing!");
      });
    } else {
      viewer.css({
        height: viewerHeight + "px"
      });
    }
    viewer.css({
      visibility: "visible"
    });
    btn.html('« Hide the preview');
    btn.on("click", hideViewer);
  }


  function hideViewer() {
    btn.off("click", hideViewer);
    if (!window.noBookSlide) {
      viewer.animate({
        height: 0
      }, 400);
      console.log("hiding!");
    } else {
      viewer.css({
        visibility: "hidden",
        height: "0"
      });
    }
    btn.html('» Preview this book!');
    btn.on("click", showViewer);
  }

  google.setOnLoadCallback(viewerInit);
});