From 2a8cde91fb3f3280e26aebf5f2dde68c3073656a Mon Sep 17 00:00:00 2001
From: Robin Appelman <robin@icewind.nl>
Date: Thu, 1 Dec 2016 14:59:35 +0100
Subject: show pdf preview in the files sidebar

Signed-off-by: Robin Appelman <robin@icewind.nl>
---
 controller/displaycontroller.php                |  6 +++--
 css/minmode.css                                 | 18 +++++++++++++
 js/previewplugin.js                             | 35 +++++++++++++++++++++++++
 templates/viewer.php                            |  3 +++
 tests/unit/controller/displaycontrollertest.php |  3 ++-
 5 files changed, 62 insertions(+), 3 deletions(-)
 create mode 100644 css/minmode.css

diff --git a/controller/displaycontroller.php b/controller/displaycontroller.php
index 30310cd..6d4da80 100644
--- a/controller/displaycontroller.php
+++ b/controller/displaycontroller.php
@@ -37,11 +37,13 @@ class DisplayController extends Controller {
 	 * @PublicPage
 	 * @NoCSRFRequired
 	 *
+	 * @param bool $minmode
 	 * @return TemplateResponse
 	 */
-	public function showPdfViewer() {
+	public function showPdfViewer($minmode = false) {
 		$params = [
-			'urlGenerator' => $this->urlGenerator
+			'urlGenerator' => $this->urlGenerator,
+			'minmode' => $minmode
 		];
 		$response = new TemplateResponse($this->appName, 'viewer', $params, 'blank');
 
diff --git a/css/minmode.css b/css/minmode.css
new file mode 100644
index 0000000..e821161
--- /dev/null
+++ b/css/minmode.css
@@ -0,0 +1,18 @@
+.toolbar {
+	display: none;
+}
+
+#viewerContainer {
+	top: 0 !important;
+}
+
+body {
+	background-color: #fff;
+	background-image: none;
+}
+
+.pdfViewer .page {
+	margin: 10px auto;
+	border: 1px solid #ddd;
+	border-image: none;
+}
diff --git a/js/previewplugin.js b/js/previewplugin.js
index 54ecb9e..3e6782b 100644
--- a/js/previewplugin.js
+++ b/js/previewplugin.js
@@ -146,3 +146,38 @@ $(document).ready(function(){
 		}
 	}
 });
+
+(function () {
+
+	var SidebarPreview = function () {	};
+
+	SidebarPreview.prototype = {
+		attach: function (manager) {
+			manager.addPreviewHandler('application/pdf', this.handlePreview.bind(this));
+		},
+
+		handlePreview: function (model, $thumbnailDiv, $thumbnailContainer, fallback) {
+			var previewWidth = Math.floor($thumbnailContainer.parent().width() + 50);  // 50px for negative margins
+			var previewHeight = Math.floor(previewWidth / (16 / 9));
+
+			var downloadUrl = Files.getDownloadUrl(model.get('name'), model.get('path'));
+
+			var viewer = OC.generateUrl('/apps/files_pdfviewer/?minmode=true&file={file}', {file: downloadUrl});
+			var $iframe = $('<iframe id="pdframe" style="width:100%;height:' + previewHeight + 'px;display:block;" src="' + viewer + '" sandbox="allow-scripts allow-same-origin allow-popups allow-modals" />');
+			$thumbnailDiv.append($iframe);
+
+			$iframe.on('load', function() {
+				$thumbnailDiv.removeClass('icon-loading icon-32');
+				$thumbnailContainer.addClass('large');
+				$thumbnailDiv.children('.stretcher').remove();
+				$thumbnailContainer.css("max-height", previewHeight);
+			});
+		},
+
+		getFileContent: function (path) {
+			return $.get(OC.linkToRemoteBase('files' + path));
+		}
+	};
+
+	OC.Plugins.register('OCA.Files.SidebarPreviewManager', new SidebarPreview());
+})();
diff --git a/templates/viewer.php b/templates/viewer.php
index 3e9c64e..76f1bdf 100644
--- a/templates/viewer.php
+++ b/templates/viewer.php
@@ -36,6 +36,9 @@ See https://github.com/adobe-type-tools/cmap-resources
 
     <link rel="stylesheet" href="<?php p($urlGenerator->linkTo('files_pdfviewer', 'vendor/pdfjs/web/viewer.css')) ?>?v=<?php p($version) ?>"/>
     <link rel="stylesheet" href="<?php p($urlGenerator->linkTo('files_pdfviewer', 'css/viewer.css')) ?>?v=<?php p($version) ?>"/>
+    <?php if($_['minmode']):?>
+      <link rel="stylesheet" href="<?php p($urlGenerator->linkTo('files_pdfviewer', 'css/minmode.css')) ?>?v=<?php p($version) ?>"/>
+    <?php endif;?>
 
 
     <script nonce="<?php p(\OC::$server->getContentSecurityPolicyNonceManager()->getNonce()) ?>" src="<?php p($urlGenerator->linkTo('files_pdfviewer', 'vendor/pdfjs/web/compatibility.js')) ?>?v=<?php p($version) ?>"></script>
diff --git a/tests/unit/controller/displaycontrollertest.php b/tests/unit/controller/displaycontrollertest.php
index 0f912e1..edcafd9 100644
--- a/tests/unit/controller/displaycontrollertest.php
+++ b/tests/unit/controller/displaycontrollertest.php
@@ -48,7 +48,8 @@ class DisplayControllerTest extends TestCase {
 
 	public function testShowPdfViewer() {
 		$params = [
-			'urlGenerator' => $this->urlGenerator
+			'urlGenerator' => $this->urlGenerator,
+			'minmode' => false
 		];
 		$expectedResponse = new TemplateResponse($this->appName, 'viewer', $params, 'blank');
 		$policy = new ContentSecurityPolicy();
-- 
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