Add sample extensions that use the text-to-speech (TTS) API.

chrome/common/extensions/docs/examples/extensions/speak_selection/content_script.js

Index: chrome/common/extensions/docs/examples/extensions/speak_selection/content_script.js
===================================================================
--- chrome/common/extensions/docs/examples/extensions/speak_selection/content_script.js	(revision 0)
+++ chrome/common/extensions/docs/examples/extensions/speak_selection/content_script.js	(revision 0)
@@ -0,0 +1,50 @@
+var speakKeyStr;
+
+function speakSelection() {
+  var focused = document.activeElement;
+  var selectedText;
+  if (focused) {
+    try {
+      selectedText = focused.value.substring(
+          focused.selectionStart, focused.selectionEnd);
+    } catch (err) {
+    }
+  }
+  if (selectedText == undefined) {
+    var sel = window.getSelection();
+    var selectedText = sel.toString();
+  }
+  chrome.extension.sendRequest({'speak': selectedText});
+}
+
+function onExtensionMessage(request) {
+  if (request['speakSelection'] != undefined) {
+    if (!document.hasFocus()) {
+      return;
+    }
+    speakSelection();
+  } else if (request['key'] != undefined) {
+    speakKeyStr = request['key'];
+  }
+}
+
+function initContentScript() {
+  chrome.extension.onRequest.addListener(onExtensionMessage);
+  chrome.extension.sendRequest({'init': true}, onExtensionMessage);
+
+  document.addEventListener('keydown', function(evt) {
+    if (!document.hasFocus()) {
+      return true;
+    }
+    var keyStr = keyEventToString(evt);
+    if (keyStr == speakKeyStr && speakKeyStr.length > 0) {
+      speakSelection();
+      evt.stopPropagation();
+      evt.preventDefault();
+      return false;
+    }
+    return true;
+  }, false);
+}
+
+initContentScript();
Property changes on: chrome/common/extensions/docs/examples/extensions/speak_selection/content_script.js
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Added: svn:eol-style
   + LF