server/apps/files/js/sidebarpreviewtext.js
Roeland Jago Douma 3aa819c62c
Do not fetch the whole text file for the sidebar preview
Just fetch the first 10kb. This should be more than enough in 99% of the
cases. And avoid downloading a 10mb text file just to display a tiny
portion.

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>
2017-08-03 20:32:59 +02:00

48 lines
1.3 KiB
JavaScript

/*
* Copyright (c) 2016
*
* This file is licensed under the Affero General Public License version 3
* or later.
*
* See the COPYING-README file.
*
*/
(function () {
var SidebarPreview = function () {
};
SidebarPreview.prototype = {
attach: function (manager) {
manager.addPreviewHandler('text', this.handlePreview.bind(this));
},
handlePreview: function (model, $thumbnailDiv, $thumbnailContainer, fallback) {
var previewWidth = $thumbnailContainer.parent().width() + 50; // 50px for negative margins
var previewHeight = previewWidth / (16 / 9);
this.getFileContent(model.getFullPath()).then(function (content) {
$thumbnailDiv.removeClass('icon-loading icon-32');
$thumbnailContainer.addClass('large');
$thumbnailContainer.addClass('text');
var $textPreview = $('<pre/>').text(content);
$thumbnailDiv.children('.stretcher').remove();
$thumbnailDiv.append($textPreview);
$thumbnailContainer.css("max-height", previewHeight);
}, function () {
fallback();
});
},
getFileContent: function (path) {
return $.ajax({
url: OC.linkToRemoteBase('files' + path),
headers: {
'Range': 'bytes=0-10240'
}
});
}
};
OC.Plugins.register('OCA.Files.SidebarPreviewManager', new SidebarPreview());
})();