1 files changed, 63 insertions, 0 deletions
diff --git a/chromium/chrome/browser/resources/chromeos/chromevox/common/braille_text_handler.js b/chromium/chrome/browser/resources/chromeos/chromevox/common/braille_text_handler.js
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index 00000000000..36d3e04cba8
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+++ b/chromium/chrome/browser/resources/chromeos/chromevox/common/braille_text_handler.js
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+// 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.
+
+goog.provide('cvox.BrailleTextHandler');
+
+goog.require('cvox.BrailleInterface');
+goog.require('cvox.BrailleUtil');
+goog.require('cvox.ChromeVox');
+goog.require('cvox.NavBraille');
+
+/**
+ * @fileoverview Updates braille display contents following text changes.
+ *
+ */
+
+/**
+ * Represents an editable text region.
+ *
+ * @constructor
+ * @param {!cvox.BrailleInterface} braille Braille interface.
+ */
+cvox.BrailleTextHandler = function(braille) {
+  /**
+   * Braille interface used to produce output.
+   * @type {!cvox.BrailleInterface}
+   * @private
+   */
+  this.braille_ = braille;
+};
+
+
+/**
+ * Called by controller class when text changes.
+ * @param {string} line The text of the line.
+ * @param {number} start The 0-based index starting selection.
+ * @param {number} end The 0-based index ending selection.
+ * @param {boolean} multiline True if the text comes from a multi line text
+ * field.
+ * @param {Element} element DOM node which line comes from.
+ * @param {number} lineStart Start offset of line (might be > 0 for multiline
+ * fields).
+ */
+cvox.BrailleTextHandler.prototype.changed = function(
+    line, start, end, multiline, element, lineStart) {
+  var content;
+  if (multiline) {
+    var spannable = cvox.BrailleUtil.createValue(line, start, end, lineStart);
+    if (element) {
+      spannable.setSpan(element, 0, line.length);
+    }
+    content = new cvox.NavBraille({text: spannable,
+                                   startIndex: start,
+                                   endIndex: end});
+  } else {
+    if (cvox.ChromeVox.navigationManager) {
+      content = cvox.ChromeVox.navigationManager.getBraille();
+    }
+  }
+  if (content) {
+    this.braille_.write(content);
+  }
+};