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Remove jQuery from the IndexedDB demo #391

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Remove jQuery from the IndexedDB demo #391

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9 changes: 0 additions & 9 deletions indexeddb-api/index.html
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3,20 +3,11 @@
<head>
<title>IndexedDB Example</title>
<link href="main.css" rel="stylesheet" type="text/css" />
<script
type="text/javascript"
src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js" defer>
</script>
<script src="main.js" defer></script>
</head>

<body>
<h1>IndexedDB Demo: storing blobs, e-publication example</h1>
<div class="note">
<p>Works and tested with:</p>
<div id="compat"></div>
</div>

<div id="msg"></div>

<form id="register-form">
Expand Down
176 changes: 85 additions & 91 deletions indexeddb-api/main.js
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,16 +1,4 @@
(function () {
var COMPAT_ENVS = [
['Firefox', ">= 16.0"],
['Google Chrome',
">= 24.0 (you may need to get Google Chrome Canary), NO Blob storage support"]
];
var compat = $('#compat');
compat.empty();
compat.append('<ul id="compat-list"></ul>');
COMPAT_ENVS.forEach(function(val, idx, array) {
$('#compat-list').append('<li>' + val[0] + ': ' + val[1] + '</li>');
});

const DB_NAME = 'mdn-demo-indexeddb-epublications';
const DB_VERSION = 1; // Use a long long for this value (don't use a float)
const DB_STORE_NAME = 'publications';
Expand Down Expand Up @@ -83,10 +71,10 @@
if (typeof store == 'undefined')
store = getObjectStore(DB_STORE_NAME, 'readonly');

var pub_msg = $('#pub-msg');
pub_msg.empty();
var pub_list = $('#pub-list');
pub_list.empty();
var pub_msg = document.querySelector('#pub-msg');
pub_msg.replaceChildren();
var pub_list = document.querySelector('#pub-list');
pub_list.replaceChildren();
// Resetting the iframe so that it doesn't display previous content
newViewerFrame();

Expand All @@ -97,8 +85,12 @@
// Thus the count text below will be displayed before the actual pub list
// (not that it is algorithmically important in this case).
req.onsuccess = function(evt) {
pub_msg.append('<p>There are <strong>' + evt.target.result +
'</strong> record(s) in the object store.</p>');
var countMessage = document.createElement('p');
countMessage.append('There are ');
var count = document.createElement('strong');
count.textContent = evt.target.result;
countMessage.append(count, ' record(s) in the object store.');
pub_msg.append(countMessage);
};
req.onerror = function(evt) {
console.error("add error", this.error);
Expand All @@ -113,23 +105,28 @@
// If the cursor is pointing at something, ask for the data
if (cursor) {
console.log("displayPubList cursor:", cursor);
req = store.get(cursor.key);
const key = cursor.key;
req = store.get(key);
req.onsuccess = function (evt) {
var value = evt.target.result;
var list_item = $('<li>' +
'[' + cursor.key + '] ' +
'(biblioid: ' + value.biblioid + ') ' +
value.title +
'</li>');
var list_item = document.createElement('li');
list_item.textContent = '[' + key + '] ' +
'(biblioid: ' + value.biblioid + ') ' +
value.title;
if (value.year != null)
list_item.append(' - ' + value.year);
list_item.append(' - ', value.year);

if (value.hasOwnProperty('blob') &&
typeof value.blob != 'undefined') {
var link = $('<a href="' + cursor.key + '">File</a>');
link.on('click', function() { return false; });
link.on('mouseenter', function(evt) {
setInViewer(evt.target.getAttribute('href')); });
var link = document.createElement('a');
link.setAttribute('href', key);
link.textContent = 'File';
link.addEventListener('click', function(evt) {
evt.preventDefault();
});
link.addEventListener('mouseenter', function(evt) {
setInViewer(evt.currentTarget.getAttribute('href'));
});
list_item.append(' / ');
list_item.append(link);
} else {
Expand All @@ -150,13 +147,19 @@
}

function newViewerFrame() {
var viewer = $('#pub-viewer');
viewer.empty();
var iframe = $('<iframe />');
var viewer = document.querySelector('#pub-viewer');
viewer.replaceChildren();
var iframe = document.createElement('iframe');
viewer.append(iframe);
return iframe;
}

function setPageCursor(cursor) {
document.querySelectorAll('*').forEach(function(element) {
element.style.cursor = cursor;
});
}

function setInViewer(key) {
console.log("setInViewer:", arguments);
key = Number(key);
Expand All @@ -174,39 +177,41 @@
// blob to provide a mean to directly download it.
if (blob.type == 'text/html') {
var reader = new FileReader();
reader.onload = (function(evt) {
reader.onload = function(evt) {
var html = evt.target.result;
iframe.load(function() {
$(this).contents().find('html').html(html);
});
});
iframe.addEventListener('load', function() {
iframe.contentDocument.documentElement.innerHTML = html;
}, { once: true });
iframe.src = 'about:blank';
};
reader.readAsText(blob);
} else if (blob.type.indexOf('image/') == 0) {
iframe.load(function() {
iframe.addEventListener('load', function() {
var img_id = 'image-' + key;
var img = $('<img id="' + img_id + '"/>');
$(this).contents().find('body').html(img);
var img = iframe.contentDocument.createElement('img');
img.id = img_id;
iframe.contentDocument.body.replaceChildren(img);
var obj_url = window.URL.createObjectURL(blob);
var imgEl = $(this).contents().find('#' + img_id);
// Ensure the image loads before revoking its url.
imgEl.load(function() {
img.addEventListener('load', function() {
window.URL.revokeObjectURL(obj_url);
});
imgEl.attr('src', obj_url);
});
iframe.attr('src', 'about:blank');
img.src = obj_url;
}, { once: true });
iframe.src = 'about:blank';
} else if (blob.type == 'application/pdf') {
$('*').css('cursor', 'wait');
setPageCursor('wait');
var obj_url = window.URL.createObjectURL(blob);
iframe.load(function() {
$('*').css('cursor', 'auto');
});
iframe.attr('src', obj_url);
window.URL.revokeObjectURL(obj_url);
iframe.addEventListener('load', function() {
setPageCursor('auto');
window.URL.revokeObjectURL(obj_url);
}, { once: true });
iframe.src = obj_url;
} else {
iframe.load(function() {
$(this).contents().find('body').html("No view available");
});
iframe.addEventListener('load', function() {
iframe.contentDocument.body.textContent = "No view available";
}, { once: true });
iframe.src = 'about:blank';
}

});
Expand Down Expand Up @@ -241,25 +246,6 @@
}
};
xhr.send();

// We can't use jQuery here because as of jQuery 1.8.3 the new "blob"
// responseType is not handled.
// http://bugs.jquery.com/ticket/11461
// http://bugs.jquery.com/ticket/7248
// $.ajax({
// url: url,
// type: 'GET',
// xhrFields: { responseType: 'blob' },
// success: function(data, textStatus, jqXHR) {
// console.log("Blob retrieved");
// console.log("Blob:", data);
// // addPublication(biblioid, title, year, data);
// },
// error: function(jqXHR, textStatus, errorThrown) {
// console.error(errorThrown);
// displayActionFailure("Error during blob retrieval");
// }
// });
}

/**
Expand Down Expand Up @@ -359,34 +345,42 @@

function displayActionSuccess(msg) {
msg = typeof msg != 'undefined' ? "Success: " + msg : "Success";
$('#msg').html('<span class="action-success">' + msg + '</span>');
var status = document.querySelector('#msg');
var statusMessage = document.createElement('span');
statusMessage.className = 'action-success';
statusMessage.textContent = msg;
status.replaceChildren(statusMessage);
}
function displayActionFailure(msg) {
msg = typeof msg != 'undefined' ? "Failure: " + msg : "Failure";
$('#msg').html('<span class="action-failure">' + msg + '</span>');
var status = document.querySelector('#msg');
var statusMessage = document.createElement('span');
statusMessage.className = 'action-failure';
statusMessage.textContent = msg;
status.replaceChildren(statusMessage);
}
function resetActionStatus() {
console.log("resetActionStatus ...");
$('#msg').empty();
document.querySelector('#msg').replaceChildren();
console.log("resetActionStatus DONE");
}

function addEventListeners() {
console.log("addEventListeners");

$('#register-form-reset').click(function(evt) {
document.querySelector('#register-form-reset').addEventListener('click', function() {
resetActionStatus();
});

$('#add-button').click(function(evt) {
document.querySelector('#add-button').addEventListener('click', function() {
console.log("add ...");
var title = $('#pub-title').val();
var biblioid = $('#pub-biblioid').val();
var title = document.querySelector('#pub-title').value;
var biblioid = document.querySelector('#pub-biblioid').value;
if (!title || !biblioid) {
displayActionFailure("Required field(s) missing");
return;
}
var year = $('#pub-year').val();
var year = document.querySelector('#pub-year').value;
if (year != '') {
// Better use Number.isInteger if the engine has EcmaScript 6
if (isNaN(year)) {
Expand All @@ -398,14 +392,14 @@
year = null;
}

var file_input = $('#pub-file');
var selected_file = file_input.get(0).files[0];
var file_input = document.querySelector('#pub-file');
var selected_file = file_input.files[0];
console.log("selected_file:", selected_file);
// Keeping a reference on how to reset the file input in the UI once we
// have its value, but instead of doing that we rather use a "reset" type
// input in the HTML form.
//file_input.val(null);
var file_url = $('#pub-file-url').val();
//file_input.value = '';
var file_url = document.querySelector('#pub-file-url').value;
if (selected_file) {
addPublication(biblioid, title, year, selected_file);
} else if (file_url) {
Expand All @@ -416,10 +410,10 @@

});

$('#delete-button').click(function(evt) {
document.querySelector('#delete-button').addEventListener('click', function() {
console.log("delete ...");
var biblioid = $('#pub-biblioid-to-delete').val();
var key = $('#key-to-delete').val();
var biblioid = document.querySelector('#pub-biblioid-to-delete').value;
var key = document.querySelector('#key-to-delete').value;

if (biblioid != '') {
deletePublicationFromBib(biblioid);
Expand All @@ -434,12 +428,12 @@
}
});

$('#clear-store-button').click(function(evt) {
document.querySelector('#clear-store-button').addEventListener('click', function() {
clearObjectStore();
});

var search_button = $('#search-list-button');
search_button.click(function(evt) {
var search_button = document.querySelector('#search-list-button');
search_button.addEventListener('click', function() {
displayPubList();
});

Expand Down