From 3fa27c054a2e66b038557801debfb39700194fd6 Mon Sep 17 00:00:00 2001
From: pacien
Date: Wed, 24 Oct 2018 05:03:45 +0200
Subject: Rename project

---
 beamer/viewer/viewer.js | 65 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 beamer/viewer/viewer.js

(limited to 'beamer/viewer/viewer.js')

diff --git a/beamer/viewer/viewer.js b/beamer/viewer/viewer.js
new file mode 100644
index 0000000..414ff1c
--- /dev/null
+++ b/beamer/viewer/viewer.js
@@ -0,0 +1,65 @@
+/*
+ * Beamer Viewer, a web-based PDF presentation viewer
+ * Copyright (C) 2018 Pacien TRAN-GIRARD
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+"use strict";
+
+class Viewer {
+  constructor() {
+    this.fileInput = document.getElementById("fileInput");
+    this._listenForInput();
+  }
+
+  load(source) {
+    pdfjsLib.getDocument(source).then(function(pdf) {
+      const presentation = new Presentation(pdf);
+    }).catch(function(error) {
+      console.error(error);
+      window.alert("Error while loading presentation:\n\n" + error.message);
+      window.location.href = window.location.pathname; // reload without "?file=..."
+    });
+  }
+
+  _readFile(file) {
+    const fileReader = new FileReader();
+    const self = this;
+    fileReader.onload = function() {
+      const byteArray = new Uint8Array(this.result);
+      self.load(byteArray);
+    }
+  
+    fileReader.readAsArrayBuffer(file);
+  }
+
+  _listenForInput() {
+    const self = this;
+    fileInput.addEventListener("change", function(event) {
+      self._readFile(event.target.files[0]);
+    });
+
+    document.body.addEventListener("drop", function(event) {
+      event.preventDefault();
+      event.stopPropagation();
+      self._readFile(event.dataTransfer.files[0]);
+    });
+
+    document.body.addEventListener("dragover", function(event) {
+      event.preventDefault();
+      event.stopPropagation();
+    });
+  }
+}
-- 
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