Display images in multiline Braille

chrome/browser/resources/chromeos/chromevox/cvox2/background/desktop_automation_handler.js

Index: chrome/browser/resources/chromeos/chromevox/cvox2/background/desktop_automation_handler.js
diff --git a/chrome/browser/resources/chromeos/chromevox/cvox2/background/desktop_automation_handler.js b/chrome/browser/resources/chromeos/chromevox/cvox2/background/desktop_automation_handler.js
index 2920129c28d0bf7d3f7a54df80674c10a22a6cb9..66ad2ce85340a6b083a424ea9a49608e3fd9281d 100644
--- a/chrome/browser/resources/chromeos/chromevox/cvox2/background/desktop_automation_handler.js
+++ b/chrome/browser/resources/chromeos/chromevox/cvox2/background/desktop_automation_handler.js
@@ -62,6 +62,8 @@ DesktopAutomationHandler = function(node) {
                     this.onFocus);
   this.addListener_(EventType.HOVER,
                     this.onHover);
+  this.addListener_(EventType.IMAGE_FRAME_UPDATED,
+                    this.onImageFrameUpdated);
   this.addListener_(EventType.INVALID_STATUS_CHANGED,
                     this.onEventIfInRange);
   this.addListener_(EventType.LOAD_COMPLETE,
@@ -413,6 +415,21 @@ DesktopAutomationHandler.prototype = {
   },
 
   /**
+   * Provides all feedback once a image frame updated event fires.
+   * @param {!AutomationEvent} evt
+   */
+  onImageFrameUpdated: function(evt) {

[David Tseng, 2017/02/24 05:39:46]

Please move this event handler to CommandHandler (see other comment).

[dmazzoni, 2017/02/27 06:56:24]

Done.

+    var node = evt.target;
+    if (!node || node != ChromeVoxState.instance.nodeDisplayingBrailleImage)
+      return;
+
+    if (node.imageDataUrl) {
+      cvox.ChromeVox.braille.writeRawImage(node.imageDataUrl);
+      cvox.ChromeVox.braille.freeze();
+    }
+  },
+
+  /**
    * Provides all feedback once a value changed event fires.
    * @param {!AutomationEvent} evt
    */