Google Preview

preview.js

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

  var viewerHeight;
  var headerHeight;

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

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


  function showButton() {
    var btn = $('#viewerButton');
    btn.click(showViewer);
    btn.html("» Preview this book");
    btn.show('medium');
  }


  function showViewer() {
    var viewer = $('#viewerContainer');
    var btn = $('#viewerButton');

    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.click(hideViewer);
  }


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

  google.setOnLoadCallback(viewerInit);
});