From 4e09b7a6656458e2f8d91dbd42a07d6f809a88c6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=A9mie=20MAGIS?= <jeremiecornet@gmail.com>
Date: Mon, 18 May 2015 10:00:50 +1100
Subject: [PATCH] ExportFile : better management for IE. Work properly on IE >=
 10 and could work on some IE 9

---
 Widget.html |  1 +
 Widget.js   | 55 ++++++++++++++++++++++++++++++-----------------------
 2 files changed, 32 insertions(+), 24 deletions(-)

diff --git a/Widget.html b/Widget.html
index 920cc16..08638eb 100644
--- a/Widget.html
+++ b/Widget.html
@@ -133,6 +133,7 @@ <h4 class="title">${nls.exportTitle}</h4>
 				<div class="list-draw-actions">
 					<a data-dojo-attach-point="exportButton" target="_BLANK" data-dojo-attach-event="ondijitclick:export" download="myDraw.json" href="#"><span class="export blue-button"></span></a>
 					<iframe data-dojo-attach-point="exportIframeForIE" style="display:none;"></iframe>
+					<a data-dojo-attach-point="exportButton" target="_BLANK" data-dojo-attach-event="ondijitclick:exportFile" download="myDraw.json" href="#"><span class="export blue-button"></span></a>
 				</div>
 			</td></tr>
 			<tr><td>
diff --git a/Widget.js b/Widget.js
index cab0fc7..94737d9 100644
--- a/Widget.js
+++ b/Widget.js
@@ -711,39 +711,46 @@ define([
 		importOnFileLoad : function (evt) {
 			var content = evt.target.result;
 			this.importJsonContent(content);
-			this.importFile.files[0] = "";
 			this.importFileInput.files[0] = "";
 		},
 
-		export : function () {
+		exportFile : function () {
+			// Be sure the link will not open if not asked : 
 			this.exportButton.href = "#";
+			this.exportButton.target = "_self";
+			
+			// Control if there are drawings
 			if (this.drawBox.drawLayer.graphics.length < 1) {
 				this.showMessage(this.nls.importWarningNoExport0Draw, 'warning');
 				return false;
-			} else {
-				//If not IE
-				if (!has("ie") && (!navigator.appName || navigator.appName != 'Microsoft Internet Explorer')) {
-					this.exportButton.href = 'data:application/json;charset=utf-8,' + this.drawingsGetJson(true);
-					this.exportButton.target = "_BLANK";
-					this.exportButton.download = (this.config.exportFileName) ? (this.config.exportFileName) : 'myDrawings.json';
-					return true;
-				}
-
-				//if IE, specific. (ie doesn't accept data in link href)
-				this.exportButton.href = "#";
-				this.exportButton.target = "";
-
-				var iframe = this.exportIframeForIE;
-				iframe = iframe.contentWindow || iframe.contentDocument;
-
-				iframe.document.open("application/octet-stream", "replace");
-				iframe.document.write(this.drawingsGetJson(true));
-				iframe.document.close();
-				iframe.focus();
-				iframe.document.execCommand('SaveAs', true, this.config.exportFileName);
-
+			}
+			
+			var export_name = (this.config.exportFileName) ? (this.config.exportFileName) : 'myDrawings.json';
+			
+			//  Case IE with blob support (IE >= 10) : use MS save blob
+			if(window.navigator && window.navigator.msSaveOrOpenBlob) {
+				var fileData = [this.drawingsGetJson(true)];
+				blobObject = new Blob(fileData, { type: 'application/octet-stream' });
+				window.navigator.msSaveOrOpenBlob(blobObject, export_name);
 				return false;
 			}
+			
+			//  Case IE without blob support : write in tab. Doesn't allways work....
+			if(has("ie")){
+				var exportWin = window.top.open("about:blank", "_blank");
+				exportWin.document.write(this.drawingsGetJson(true));
+				exportWin.document.close();
+				exportWin.focus();
+				exportWin.document.execCommand('SaveAs', true, export_name);
+				exportWin.close();
+				return false;
+			}
+			
+			//  Case HTML5 (Firefox > 25, Chrome > 30....) : use data link with download attribute
+			this.exportButton.href = 'data:application/octet-stream;charset=utf-8,' + this.drawingsGetJson(true);
+			this.exportButton.target = "_blank";
+			this.exportButton.download = export_name;
+			return true;
 		},