Entering / exiting dialog notification should not interrupt live region.

chrome/browser/resources/chromeos/chromevox/host/testing/tts.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview Dummy implementation of TTS for testing.
  *
  */
 
 goog.provide('cvox.TestTts');
@@ skipping 19 matching lines @@
  * @type {string}
  * @private
  */
 cvox.TestTts.prototype.sentinelText_ = '@@@STOP@@@';
 
 
 /**
  * @override
  */
 cvox.TestTts.prototype.speak = function(text, queueMode, opt_properties) {
-  this.utterances_.push({text: text, queueMode: queueMode});
+  this.utterances_.push({text: text,
+                         queueMode: queueMode,
+                         properties: opt_properties});
   if (opt_properties && opt_properties['endCallback'] != undefined) {
     var len = this.utterances_.length;
     // 'After' is a sentinel value in the tests that tells TTS to stop and
     // ends callbacks being called.
     if (this.utterances_[len - 1].text !=
         this.sentinelText_) {
       opt_properties['endCallback']();
     }
   }
 };
@@ skipping 24 matching lines @@
  * @return {string} A single string containing all utterances spoken
  *     since initialization or the last call to clearUtterances,
  *     concatenated together with all whitespace collapsed to single
  *     spaces.
  */
 cvox.TestTts.prototype.getUtterancesAsString = function() {
   return cvox.DomUtil.collapseWhitespace(this.getUtteranceList().join(' '));
 };
 
 /**
+ * Processes the utterances spoken the same way the speech queue does,
+ * as if they were all generated one after another, with no delay between
+ * them, and returns a list of strings that would be output.
+ *
+ * For example, if two strings were spoken with a queue mode of FLUSH,
+ * only the second string will be returned.
+ * @return {Array.<string>} A list of strings representing the speech output.
+ */
+cvox.TestTts.prototype.getSpeechQueueOutput = function() {
+  var queue = [];
+  for (var i = 0; i < this.utterances_.length; i++) {
+    var utterance = this.utterances_[i];
+    switch (utterance.queueMode) {
+      case cvox.AbstractTts.QUEUE_MODE_FLUSH:
+        queue = [];
+        break;
+      case cvox.AbstractTts.QUEUE_MODE_QUEUE:
+        break;
+      case cvox.AbstractTts.QUEUE_MODE_CATEGORY_FLUSH:
+        var oldQueue = queue;

[David Tseng, 2014/09/26 22:42:20]

You could just
(pseudocode)
if utterance has category
queue = queue.filter(function(u) {
  return !u.properties || u.properties.category != utterance.category;
});

[dmazzoni, 2014/09/26 22:51:49]

Done.

+        queue = [];
+        if (utterance.properties && utterance.properties.category) {
+          for (var i = 0; i < oldQueue.length; i++) {
+            if (!oldQueue[i].properties ||
+                oldQueue[i].properties.category !=
+                    utterance.properties.category) {
+              queue.push(oldQueue[i]);
+            }
+          }
+        }
+        break;
+    }
+    queue.push(utterance);

[David Tseng, 2014/09/26 22:42:20]

Did you mean to push here?

[dmazzoni, 2014/09/26 22:51:49]

Yes

+  }
+
+  var result = [];

[David Tseng, 2014/09/26 22:42:20]

queue.map() seems like a good pattern here.

[dmazzoni, 2014/09/26 22:51:49]

Done.

+  for (var i = 0; i < queue.length; i++) {
+    result.push(queue[i].text);
+  }
+  return result;
+};
+
+/**
  * Return a list of strings of what was spoken by tts.speak().
  * @return {Array.<string>} A list of all utterances spoken since
  *     initialization or the last call to clearUtterances.
  */
 cvox.TestTts.prototype.getUtteranceList = function() {
   var result = [];
   for (var i = 0; i < this.utterances_.length; i++) {
     result.push(this.utterances_[i].text);
   }
   return result;
 };
 
 /**
  * Return a list of strings of what was spoken by tts.speak().
  * @return {Array.<{text: string, queueMode: number}>}
  *     A list of info about all utterances spoken since
  *     initialization or the last call to clearUtterances.
  */
 cvox.TestTts.prototype.getUtteranceInfoList = function() {
   return this.utterances_;
 };
 
 /** @override */
 cvox.HostFactory.ttsConstructor = cvox.TestTts;