-<script type="text/javascript">
-var GBisbns = Array();
-var GBPreviewLink = '';
-var GBPreviewShowing = false;
+<script>
+;(function () {
+ var GBisbns = [];
+ var GBPBadgelink;
+ var GBPreviewLink = '';
+ var GBPreviewShowing = false;
+ var lang = '[% ctx.locale.substr(0,2) %]';
+ var head = document.getElementsByTagName('head')[0];
/**
- *
- * @param {DOM object} isbn The form element containing the input parameters "isbns"
- */
-function searchForGBPreview( isbn ) {
- dojo.require("dojo.io.script");
- dojo.io.script.get({"url": "https://www.google.com/jsapi"});
- dojo.io.script.get({"url": "https://www.googleapis.com/books/v1/volumes", "content": { "q": "isbn:" + isbn, "callback": "GBPreviewCallback"}});
-}
-
-/**
- * This function is the call-back function for the JSON scripts which
+ * This function is the call-back function for the JSON scripts which
* executes a Google book search response.
*
* @param {JSON} GBPBookInfo is the JSON object pulled from the Google books service.
*/
-function GBPreviewCallback(GBPBookInfo) {
- if (GBPBookInfo.totalItems < 1) return;
+ function GBPreviewCallback (GBPBookInfo) {
+ if (GBPBookInfo.totalItems < 1) {
+ return;
+ }
- var accessInfo = GBPBookInfo.items[0].accessInfo;
- if ( !accessInfo ) {
- return;
- }
+ var accessInfo = GBPBookInfo.items[0].accessInfo;
+ if (!accessInfo) {
+ return;
+ }
- if ( accessInfo.embeddable ) {
- GPPreviewLink = GBPBookInfo.items[0].volumeInfo.previewLink;
- if ( !GPPreviewLink) {
+ if (accessInfo.embeddable) {
+ GBPreviewLink = GBPBookInfo.items[0].volumeInfo.previewLink;
+ if (!GBPreviewLink) {
return;
- }
+ }
+ if (document.location.protocol === 'https:') {
+ GBPreviewLink = GBPreviewLink.replace(/^http:/, 'https:');
+ }
+ var gbsrc = '//www.google.com/books/jsapi.js';
+ if (!head.querySelector('script[src="' + gbsrc + '"]')) {
+ var GBjsapi = document.createElement('script');
+ GBjsapi.src = gbsrc;
+ head.appendChild(GBjsapi);
+ }
/* Add a button below the book cover image to load the preview. */
- var GBPBadge = document.createElement( 'img' );
- GBPBadge.id = 'gbpbadge';
- GBPBadge.src = 'https://www.google.com/intl/[% ctx.locale.substr(0,2) %]/googlebooks/images/gbs_preview_button1.gif';
- GBPBadge.title = dojo.byId('rdetail_title').innerHTML;
- GBPBadge.style.border = 0;
- GBPBadge.style.margin = '0.5em 0 0 0';
- GBPBadgelink = document.createElement('a');
- GBPBadgelink.id = 'gbpbadge_link';
- GBPBadgelink.href = 'javascript:GBDisplayPreview(true);';
- GBPBadgelink.appendChild( GBPBadge );
- dojo.byId('rdetail_title_div').appendChild( GBPBadgelink );
- unHideMe(dojo.byId('gbp_extra'));
+ var GBPBadge = document.createElement('img');
+ GBPBadge.id = 'gbpbadge';
+ GBPBadge.src = 'https://www.google.com/intl/' + lang + '/googlebooks/images/gbs_preview_button1.gif';
+ GBPBadge.title = document.getElementById('rdetail_title').innerHTML;
+ GBPBadge.style.border = 0;
+ GBPBadge.style.margin = '0.5em 0 0 0';
+ GBPBadgelink = document.createElement('a');
+ GBPBadgelink.id = 'gbpbadge_link';
+ GBPBadgelink.addEventListener('click', GBDisplayPreview);
+ GBPBadgelink.appendChild(GBPBadge);
+ document.getElementById('rdetail_title_div').appendChild(GBPBadgelink);
+ document.getElementById('gbp_extra').style.display = 'block';
+ }
+ }
+
+ function GBPViewerLoadCallback () {
+ var GBPViewer = new google.books.DefaultViewer(document.getElementById('rdetail_preview_div'));
+ GBPViewer.load(GBPreviewLink);
+ GBPViewer.resize();
+ GBPBadgelink = document.getElementById('gbpbadge_link');
+ GBPBadgelink.removeEventListener('click', GBDisplayPreview);
+ GBPBadgelink.addEventListener('click', GBShowHidePreview);
}
-}
/**
* This is called when the user clicks on the 'Preview' link. We assume
* a preview is available from Google if this link was made visible.
*/
-function GBDisplayPreview(scroll_to_div) {
- var GBPreviewPane = document.createElement('div');
- GBPreviewPane.id = 'rdetail_preview_div';
- GBPreviewPane.style.height = '800px';
- GBPreviewPane.style.width = '600px';
- GBPreviewPane.style.display = 'block';
- var GBClear = document.createElement('div');
- GBClear.style.padding = '1em';
- dojo.byId('gbp_extra_container').appendChild(GBPreviewPane);
- dojo.byId('gbp_extra_container').appendChild(GBClear);
- if (GBPreviewPane.getAttribute('loaded') == null || GBPreviewPane.getAttribute('loaded') == "false" ) {
- google.load("books", "0", {"callback" : GBPViewerLoadCallback, "language": "[% ctx.locale.substr(0,2) %]"} );
- GBPreviewPane.setAttribute('loaded', 'true');
+ function GBDisplayPreview () {
+ var GBPreviewPane = document.getElementById('rdetail_preview_div');
+ if (GBPreviewPane === null || typeof GBPreviewPane.loaded === 'undefined' || GBPreviewPane.loaded === 'false') {
+ GBPreviewPane = document.createElement('div');
+ GBPreviewPane.id = 'rdetail_preview_div';
+ GBPreviewPane.style.height = '800px';
+ GBPreviewPane.style.width = '600px';
+ GBPreviewPane.style.display = 'block';
+ var GBClear = document.createElement('div');
+ GBClear.style.padding = '1em';
+ document.getElementById('gbp_extra_container').appendChild(GBPreviewPane);
+ document.getElementById('gbp_extra_container').appendChild(GBClear);
+ google.books.load({'language': lang});
+ window.setTimeout(GBPViewerLoadCallback, 750);
+ var extras = document.getElementById('gbp_extra_links').getElementsByTagName('a');
+ for (var i = 0; i < extras.length; i++) {
+ extras[i].addEventListener('click', GBShowHidePreview);
+ }
+ GBPreviewPane.loaded = 'true';
+ }
+ GBShowHidePreview();
+ document.location.hash = '#gbp_extra';
}
- if (scroll_to_div) document.location.hash = '#gbp_extra';
-}
-function GBPViewerLoadCallback() {
- var GBPViewer = new google.books.DefaultViewer(dojo.byId('rdetail_preview_div'));
- GBPViewer.load(GPPreviewLink);
- GBPViewer.resize();
- var GBPBadgelink = dojo.byId('gbpbadge_link');
- GBPBadgelink.href = 'javascript:GBShowHidePreview(true);';
- dojo.forEach(
- dojo.byId('gbp_extra_links').getElementsByTagName('a'),
- function(link) {
- link.href = 'javascript:GBShowHidePreview();';
+ function GBShowHidePreview () {
+ if (!GBPreviewShowing) {
+ document.getElementById('gbp_extra_container').style.display = 'inherit';
+ document.getElementById('gbp_arrow_link').style.display = 'none';
+ document.getElementById('gbp_arrow_down_link').style.display = 'inline';
+ GBPreviewShowing = true;
+ document.location.hash = '#gbp_extra';
+ } else { // button can open, but shouldn't close
+ document.getElementById('gbp_extra_container').style.display = 'none';
+ document.getElementById('gbp_arrow_link').style.display = 'inline';
+ document.getElementById('gbp_arrow_down_link').style.display = 'none';
+ GBPreviewShowing = false;
+ document.location.hash = 'rdetail_title';
}
- );
- hideMe(dojo.byId('gbp_arrow_link'));
- unHideMe(dojo.byId('gbp_arrow_down_link'));
- GBPreviewShowing = true;
-}
-
-function GBShowHidePreview(from_button) {
- if (!GBPreviewShowing) {
- dojo.byId('gbp_extra_container').style.display = 'inherit';
- hideMe(dojo.byId('gbp_arrow_link'));
- unHideMe(dojo.byId('gbp_arrow_down_link'));
- GBPreviewShowing = true;
- } else if (!from_button) { // button can open, but shouldn't close
- dojo.byId('gbp_extra_container').style.display = 'none';
- unHideMe(dojo.byId('gbp_arrow_link'));
- hideMe(dojo.byId('gbp_arrow_down_link'));
- GBPreviewShowing = false;
}
- // button should always scroll
- if (from_button) document.location.hash = '#gbp_extra';
-}
-dojo.addOnLoad(function() {
- var spans = dojo.query('li.rdetail_isbns span.rdetail_value');
- for (var i = 0; i < spans.length; i++) {
- var prop = spans[i].getAttribute('property');
- if (!prop) {
- continue;
+ function GBLoader () {
+ var spans = document.body.querySelectorAll('li.rdetail_isbns span.rdetail_value');
+ for (var i = 0; i < spans.length; i++) {
+ var prop = spans[i].getAttribute('property');
+ if (!prop) {
+ continue;
+ }
+ var isbn = spans[i].textContent || spans[i].innerText
+ if (!isbn) {
+ continue;
+ }
+ isbn = isbn.toString().replace(/^\s+/, '');
+ var idx = isbn.indexOf(' ');
+ if (idx > -1) {
+ isbn = isbn.substring(0, idx);
+ }
+ isbn = isbn.toString().replace(/-/g, '');
+ if (!isbn) {
+ continue;
+ }
+ GBisbns.push(isbn);
}
- var isbn = spans[i].textContent || spans[i].innerText;
- if (!isbn) {
- continue;
- }
- isbn = isbn.toString().replace(/^\s+/,"");
- var idx = isbn.indexOf(" ");
- if (idx > -1) {
- isbn = isbn.substring(0, idx);
- }
- isbn = isbn.toString().replace(/-/g,"");
- if (!isbn) {
- continue;
+
+ if (GBisbns.length) {
+ var req = new window.XMLHttpRequest();
+ var qisbn = encodeURIComponent('isbn:' + GBisbns[0]);
+ req.open('GET', 'https://www.googleapis.com/books/v1/volumes?q=' + qisbn + '&prettyPrint=false');
+ if (req.responseType && (req.responseType = 'json')) {
+ req.onload = function (evt) {
+ var result = req.response;
+ if (result) {
+ GBPreviewCallback(result);
+ }
+ }
+ } else {
+ // IE 10/11
+ req.onload = function (evt) {
+ var result = JSON.parse(req.responseText);
+ if (result) {
+ GBPreviewCallback(result);
+ }
+ }
+ }
+ req.send();
}
- GBisbns.push(isbn);
- }
+ };
- if (GBisbns.length) {
- searchForGBPreview(GBisbns[0]);
+ // Skips IE9
+ if (window.addEventListener && !window.XDomainRequest) {
+ window.addEventListener('load', GBLoader, false);
}
-});
+})()
</script>
projects / evergreen / joelewis.git / commitdiff