web/cryptpad
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Create thumbnails only when the tab is not focused

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This commit is contained in:
yflory
2017-11-06 13:36:54 +01:00
parent a37e6c7979
commit 9060464f37
8 changed files with 120 additions and 88 deletions
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48
www/common/sframe-common-interface.js
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@@ -3,16 +3,13 @@ define([
'/api/config',
'/common/cryptpad-common.js',
'/common/common-util.js',
'/common/common-hash.js',
'/common/media-tag.js',
'/common/tippy.min.js',
'/customize/application_config.js',
'/file/file-crypto.js',
'/bower_components/localforage/dist/localforage.min.js',
'/bower_components/tweetnacl/nacl-fast.min.js',
'css!/common/tippy.css',
], function ($, Config, Cryptpad, Util, Hash, MediaTag, Tippy, AppConfig, FileCrypto, localForage) {
], function ($, Config, Cryptpad, Util, MediaTag, Tippy, AppConfig) {
var UI = {};
var Messages = Cryptpad.Messages;
var Nacl = window.nacl;
@@ -33,49 +30,6 @@ define([
* - createDropdown
*/
var addThumbnail = function (err, thumb, $span, cb) {
var img = new Image();
img.src = thumb.slice(0,5) === 'data:' ? thumb : 'data:;base64,'+thumb;
$span.find('.cp-icon').hide();
$span.prepend(img);
cb($(img));
};
UI.setPadThumbnail = function (href, b64, cb) {
cb = cb || $.noop;
var k ='thumbnail-' + href;
localForage.setItem(k, b64, cb);
};
localForage.removeItem('thumbnail-/1/edit/lqg6RRnynI76LV0sR8F0YA/Nh1SNXxB5U2UjaADvODfvI5l/');
UI.displayThumbnail = function (href, $container, cb) {
cb = cb || $.noop;
var parsed = Hash.parsePadUrl(href);
var k ='thumbnail-' + href;
var whenNewThumb = function () {
var secret = Hash.getSecrets('file', parsed.hash);
var hexFileName = Util.base64ToHex(secret.channel);
var src = Hash.getBlobPathFromHex(hexFileName);
var cryptKey = secret.keys && secret.keys.fileKeyStr;
var key = Nacl.util.decodeBase64(cryptKey);
FileCrypto.fetchDecryptedMetadata(src, key, function (e, metadata) {
if (!metadata.thumbnail) {
return void localForage.setItem(k, 'EMPTY');
}
localForage.setItem(k, metadata.thumbnail, function (err) {
addThumbnail(err, metadata.thumbnail, $container, cb);
});
});
};
localForage.getItem(k, function (err, v) {
if (!v && parsed.type === 'file') {
// We can only create thumbnails for files here since we can't easily decrypt pads
return void whenNewThumb();
}
if (!v) { return; }
if (v === 'EMPTY') { return; }
addThumbnail(err, v, $container, cb);
});
};
UI.updateTags = function (common, href) {
var sframeChan = common.getSframeChannel();
sframeChan.query('Q_TAGS_GET', href || null, function (err, res) {