Write altText of image if available

3 files changed, 28 insertions, 3 deletions

diff --git a/lib/document-to-html.js b/lib/document-to-html.js
index 9951cbb..a1b2ec6 100644
--- a/lib/document-to-html.js
+++ b/lib/document-to-html.js
@@ -89,7 +89,11 @@ function DocumentConverter(options) {
             return element.read().then(function(imageBuffer) {
                 // TODO: set alt attribute to wp:inline/wp:docPr/@descr
                 var src = "data:image/png;base64," + imageBuffer.toString("base64");
-                html.selfClosing(styles.element("img", {"src": src}))
+                var attributes = {src: src};
+                if (element.altText) {
+                    attributes.alt = element.altText;
+                }
+                html.selfClosing(styles.element("img", attributes));
             });
         }
     };
diff --git a/lib/documents.js b/lib/documents.js
index b28281f..d1c1e03 100644
--- a/lib/documents.js
+++ b/lib/documents.js
@@ -33,10 +33,11 @@ function ElementWithChildren(type) {
     };
 }
 
-function Image(read) {
+function Image(read, altText) {
     return {
         type: "image",
-        read: read
+        read: read,
+        altText: altText
     };
 }
 
diff --git a/tests/document-to-html.tests.js b/tests/document-to-html.tests.js
index f8ea482..e7d65e7 100644
--- a/tests/document-to-html.tests.js
+++ b/tests/document-to-html.tests.js
@@ -5,6 +5,7 @@ var documents = require("../lib/documents");
 var DocumentConverter = require("../lib/document-to-html").DocumentConverter;
 var test = require("./testing").test;
 var styles = require("../lib/styles");
+var xmlreader = require("../lib/xmlreader");
 
 
 describe('DocumentConverter', function() {
@@ -164,6 +165,25 @@ describe('DocumentConverter', function() {
             assert.equal(result.html, '<img src="data:image/png;base64,' + imageBuffer.toString("base64") + '" />');
         });
     });
+    
+    test('images have alt attribute if available', function() {
+        var imageBuffer = new Buffer("Not an image at all!");
+        var image = new documents.Image(
+            function() {
+                return q.when(imageBuffer);
+            },
+            "It's a hat"
+        );
+        var converter = new DocumentConverter();
+        return converter.convertToHtml(image)
+            .then(function(result) {
+                return xmlreader.read(result.html);
+            })
+            .then(function(htmlImageElementDocument) {
+                var htmlImageElement = htmlImageElementDocument.root;
+                assert.equal(htmlImageElement.attributes.alt, "It's a hat");
+            });
+    });
 });
 
 function paragraphOfText(text, styleName) {