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Lines 5-12
if (typeof KOHA == "undefined" || !KOHA) {
Link Here
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/** |
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/** |
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* A namespace for OpenLibrary related functions. |
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* A namespace for OpenLibrary related functions. |
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*/ |
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*/ |
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KOHA.OpenLibrary = { |
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KOHA.OpenLibrary = new function() { |
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/** |
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/** |
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* Search all: |
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* Search all: |
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Lines 17-23
KOHA.OpenLibrary = {
Link Here
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* The result is asynchronously returned by OpenLibrary and catched by |
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* The result is asynchronously returned by OpenLibrary and catched by |
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* olCallBack(). |
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* olCallBack(). |
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*/ |
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*/ |
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GetCoverFromIsbn: function() { |
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this.GetCoverFromIsbn = function() { |
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var bibkeys = []; |
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var bibkeys = []; |
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$("[id^=openlibrary-thumbnail]").each(function(i) { |
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$("[id^=openlibrary-thumbnail]").each(function(i) { |
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bibkeys.push("ISBN:" + $(this).attr("class")); // id=isbn |
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bibkeys.push("ISBN:" + $(this).attr("class")); // id=isbn |
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Lines 30-42
KOHA.OpenLibrary = {
Link Here
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"&callback=KOHA.OpenLibrary.olCallBack&jscmd=data"); |
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"&callback=KOHA.OpenLibrary.olCallBack&jscmd=data"); |
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scriptElement.setAttribute("type", "text/javascript"); |
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scriptElement.setAttribute("type", "text/javascript"); |
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document.documentElement.firstChild.appendChild(scriptElement); |
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document.documentElement.firstChild.appendChild(scriptElement); |
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}, |
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} |
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/** |
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/** |
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* Add cover pages <div |
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* Add cover pages <div |
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* and link to preview if div id is gbs-thumbnail-preview |
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* and link to preview if div id is gbs-thumbnail-preview |
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*/ |
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*/ |
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olCallBack: function(booksInfo) { |
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this.olCallBack = function(booksInfo) { |
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for (id in booksInfo) { |
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for (id in booksInfo) { |
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var book = booksInfo[id]; |
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var book = booksInfo[id]; |
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var isbn = id.substring(5); |
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var isbn = id.substring(5); |
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Lines 64-67
KOHA.OpenLibrary = {
Link Here
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}); |
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}); |
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} |
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} |
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} |
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} |
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var search_url = 'https://openlibrary.org/search?'; |
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this.searchUrl = function( q ) { |
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var params = {q: q}; |
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return search_url + $.param(params); |
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}; |
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var search_url_json = 'https://openlibrary.org/search.json'; |
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this.search = function( q, page_no, callback ) { |
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var params = {q: q}; |
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if (page_no) { |
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params.page = page_no; |
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} |
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$.ajax( { |
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type: 'GET', |
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url: search_url_json, |
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dataType: 'json', |
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data: params, |
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error: function( xhr, error ) { |
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try { |
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callback( JSON.parse( xhr.responseText )); |
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} catch ( e ) { |
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callback( {error: xhr.responseText || true} ); |
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} |
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}, |
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success: callback |
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} ); |
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}; |
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}; |
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/* readapi_automator.js */ |
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/* |
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This script helps to put readable links to Open Library books into |
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online book catalogs. |
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When loaded, it searches the DOM for <div> elements with class |
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"ol_readapi_book", extracts book identifiers from them (e.g. isbn, |
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lccn, etc.) and puts those into an asynchronous call to the Read API. |
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When the call returns, the results are used to add clickable links |
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to the "ol_readapi_book" elements found earlier. |
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A demonstration use of this script is available here: |
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http://internetarchive.github.com/read_api_extras/readapi_demo.html |
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*/ |
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var ol_readapi_automator = |
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(function () { // open anonymous scope for tidiness |
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// 'constants' |
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var readapi_bibids = ['isbn', 'lccn', 'oclc', 'olid', 'iaid', 'bibkeys']; |
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var magic_classname = 'ol_readapi_book'; |
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// added to book divs to correlate with API results |
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var magic_bookid = 'ol_bookid'; |
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var ol_button_classname = 'ol_readapi_button'; |
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// Find all book divs and concatenate ids from them to create a read |
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// API query url |
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function create_query() { |
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var q = 'http://openlibrary.org/api/volumes/brief/json/'; |
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function add_el(i, el) { |
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// tag with number found so it's easy to discover later |
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// (necessary? just go by index?) |
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// (choose better name?) |
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$(el).attr(magic_bookid, i); |
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if (i > 0) { |
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q += '|'; |
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} |
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q += 'id:' + i; |
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for (bi in readapi_bibids) { |
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bibid = readapi_bibids[bi]; |
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if ($(el).attr(bibid)) { |
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q += ';' + bibid + ':' + $(el).attr(bibid); |
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} |
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} |
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} |
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$('.' + magic_classname).each(add_el); |
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return q; |
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} |
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function make_read_button(bookdata) { |
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buttons = { |
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'full access': |
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"http://openlibrary.org/images/button-read-open-library.png", |
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'lendable': |
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"http://openlibrary.org/images/button-borrow-open-library.png", |
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'checked out': |
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"http://openlibrary.org/images/button-checked-out-open-library.png" |
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}; |
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if (bookdata.items.length == 0) { |
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return false; |
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} |
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first = bookdata.items[0]; |
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if (!(first.status in buttons)) { |
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return false; |
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} |
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result = '<a href="' + first.itemURL + '">' + |
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'<img class="' + ol_button_classname + |
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'" src="' + buttons[first.status] + '"/></a>'; |
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return result; |
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} |
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// Default function for decorating document elements with read API data |
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function default_decorate_el_fn(el, bookdata) { |
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// Note that 'bookdata' may be undefined, if the Read API call |
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// didn't return results for this book |
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if (!bookdata) { |
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decoration = 'Not found'; |
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} else { |
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decoration = make_read_button(bookdata); |
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} |
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if (decoration) { |
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el.innerHTML += decoration; |
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} |
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} |
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function do_query(q, decorate_el_fn) { |
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if (!decorate_el_fn) { |
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decorate_el_fn = default_decorate_el_fn; |
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} |
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var starttime = (new Date()).getTime(); |
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// Call a function on each <div class="ol_readapi_book"> element |
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// with the target element and the data found for that element. |
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// Use decorate_el_fn if supplied, falling back to |
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// default_decorate_el_fn, above. |
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function query_callback(data, textStatus, jqXHR) { |
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var endtime = (new Date()).getTime(); |
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var duration = (endtime - starttime) / 1000; |
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// console.log('took ' + duration + ' seconds'); |
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$('.' + magic_classname).each(function(i, el) { |
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var bookid = $(el).attr(magic_bookid); |
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if (bookid && bookid in data) { |
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decorate_el_fn(el, data[bookid]); |
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} else { |
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decorate_el_fn(el); |
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} |
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}); |
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} |
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// console.log('calling ' + q); |
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$.ajax({ url: q, |
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data: { 'show_all_items': 'true' }, |
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dataType: 'jsonp', |
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success: query_callback |
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}); |
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} |
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// Do stuff |
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var q = create_query(); |
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do_query(q); |
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result = { |
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do_query: do_query, |
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create_query: create_query, |
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make_read_button: make_read_button |
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}; |
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}; |
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- |
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return result; |
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})(); // close anonymous scope |
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/* |
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Possible futures: |
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* Support alternate query targets, e.g. Hathi |
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* show_all_items |
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* show_inlibrary |
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* ezproxy prefix (implies show_inlibrary?) |
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* console debug output? (check all console.log) |
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*/ |