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

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

Index: chrome/common/extensions/docs/examples/extensions/speak_selection/options.js
===================================================================
--- chrome/common/extensions/docs/examples/extensions/speak_selection/options.js	(revision 0)
+++ chrome/common/extensions/docs/examples/extensions/speak_selection/options.js	(revision 0)
@@ -0,0 +1,124 @@
+function load() {
+  var selectedElement = document.getElementById('selected');
+  var sel = window.getSelection();
+  sel.removeAllRanges();
+  var range = document.createRange();
+  range.selectNode(selectedElement);
+  sel.addRange(range);
+
+  var rateElement = document.getElementById('rate');
+  var pitchElement = document.getElementById('pitch');
+  var volumeElement = document.getElementById('volume');
+  var rate = localStorage['rate'] || 1.0;
+  var pitch = localStorage['pitch'] || 1.0;
+  var volume = localStorage['volume'] || 1.0;
+  rateElement.value = rate;
+  pitchElement.value = pitch;
+  volumeElement.value = volume;
+  function listener(evt) {
+    rate = rateElement.value;
+    localStorage['rate'] = rate;
+    pitch = pitchElement.value;
+    localStorage['pitch'] = pitch;
+    volume = volumeElement.value;
+    localStorage['volume'] = volume;
+  }
+  rateElement.addEventListener('keyup', listener, false);
+  pitchElement.addEventListener('keyup', listener, false);
+  volumeElement.addEventListener('keyup', listener, false);
+  rateElement.addEventListener('mouseup', listener, false);
+  pitchElement.addEventListener('mouseup', listener, false);
+  volumeElement.addEventListener('mouseup', listener, false);
+
+  var defaultsButton = document.getElementById('defaults');
+  defaultsButton.addEventListener('click', function(evt) {
+    rate = 1.0;
+    pitch = 1.0;
+    volume = 1.0;
+    localStorage['rate'] = rate;
+    localStorage['pitch'] = pitch;
+    localStorage['volume'] = volume;
+    rateElement.value = rate;
+    pitchElement.value = pitch;
+    volumeElement.value = volume;
+  }, false);
+
+  var voice = document.getElementById('voice');
+  var voiceArray = [];
+  chrome.tts.getVoices(function(va) {
+    voiceArray = va;
+    for (var i = 0; i < voiceArray.length; i++) {
+      var opt = document.createElement('option');
+      var name = voiceArray[i].voiceName;
+      if (name == localStorage['voice']) {
+        opt.setAttribute('selected', '');
+      }
+      opt.setAttribute('value', name);
+      opt.innerText = voiceArray[i].voiceName;
+      voice.appendChild(opt);
+    }
+  });
+  voice.addEventListener('change', function() {
+    var i = voice.selectedIndex;
+    localStorage['voice'] = voiceArray[i].voiceName;
+  }, false);
+
+  var defaultKeyString = getDefaultKeyString();
+
+  var keyString = localStorage['speakKey'];
+  if (keyString == undefined) {
+    keyString = defaultKeyString;
+  }
+
+  var testButton = document.getElementById('test');
+  testButton.addEventListener('click', function(evt) {
+    chrome.tts.speak(
+        'Testing speech synthesis',
+        {voiceName: localStorage['voice'],
+         rate: parseFloat(rate),
+         pitch: parseFloat(pitch),
+         volume: parseFloat(volume)});
+  });
+
+  var hotKeyElement = document.getElementById('hotkey');
+  hotKeyElement.value = keyString;
+  hotKeyElement.addEventListener('keydown', function(evt) {
+    switch (evt.keyCode) {
+      case 27:  // Escape
+        evt.stopPropagation();
+        evt.preventDefault();
+        hotKeyElement.blur();
+        return false;
+      case 8:   // Backspace
+      case 46:  // Delete
+        evt.stopPropagation();
+        evt.preventDefault();
+        hotKeyElement.value = '';
+        localStorage['speakKey'] = '';
+        sendKeyToAllTabs('');
+        window.speakKeyStr = '';
+        return false;
+      case 9:  // Tab
+        return false;
+      case 16:  // Shift
+      case 17:  // Control
+      case 18:  // Alt/Option
+      case 91:  // Meta/Command
+        evt.stopPropagation();
+        evt.preventDefault();
+        return false;
+    }
+    var keyStr = keyEventToString(evt);
+    if (keyStr) {
+      hotKeyElement.value = keyStr;
+      localStorage['speakKey'] = keyStr;
+      sendKeyToAllTabs(keyStr);
+
+      // Set the key used by the content script running in the options page.
+      window.speakKeyStr = keyStr;
+    }
+    evt.stopPropagation();
+    evt.preventDefault();
+    return false;
+  }, true);
+}
Property changes on: chrome/common/extensions/docs/examples/extensions/speak_selection/options.js
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Added: svn:eol-style
   + LF