preventDefault everywhere in the virtual keyboard.

This prevents the virtual keyboard from changing scale, scrolling, etc.

BUG=none
TEST=manually

Review URL: http://codereview.chromium.org/7910004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@101370 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 15 insertions, 2 deletions

diff --git a/chrome/browser/resources/keyboard/common.js b/chrome/browser/resources/keyboard/common.js
index e58f069..1d9cb96 100644
--- a/chrome/browser/resources/keyboard/common.js
+++ b/chrome/browser/resources/keyboard/common.js
@@ -186,6 +186,9 @@ function setupKeyEventHandlers(key, element, handlers) {
    * @param {UIEvent} evt The UI event which triggered the key down.
    */
   var downHandler = function(evt) {
+    // Prevent any of the system gestures from happening.
+    evt.preventDefault();
+
     // Don't process a key down if the key is already down.
     if (key.pressed) {
       return;
@@ -194,7 +197,6 @@ function setupKeyEventHandlers(key, element, handlers) {
     if (keyDownHandler) {
       keyDownHandler();
     }
-    evt.preventDefault();
     repeatKey.cancel();
 
     // Start a repeating timer if there is a repeat interval and a function to
@@ -228,6 +230,9 @@ function setupKeyEventHandlers(key, element, handlers) {
    * @param {UIEvent} evt The UI event which triggered the key up.
    */
   var upHandler = function(evt) {
+    // Prevent any of the system gestures from happening.
+    evt.preventDefault();
+
     // Reset long-press timer.
     if (key.longPressTimer) {
       clearTimeout(key.longPressTimer);
@@ -248,7 +253,6 @@ function setupKeyEventHandlers(key, element, handlers) {
     if (keyUpHandler) {
       keyUpHandler();
     }
-    evt.preventDefault();
   };
 
   var outHandler = function(evt) {
diff --git a/chrome/browser/resources/keyboard/main.js b/chrome/browser/resources/keyboard/main.js
index 99d4571..729df6c 100644
--- a/chrome/browser/resources/keyboard/main.js
+++ b/chrome/browser/resources/keyboard/main.js
@@ -155,6 +155,15 @@ window.onresize = function() {
 window.onload = function() {
   var body = document.getElementById('b');
 
+  // Catch all unhandled touch events and prevent default, to prevent the
+  // keyboard from responding to gestures like double tap.
+  function disableGestures(evt) {
+    evt.preventDefault();
+  }
+  body.addEventListener('touchstart', disableGestures);
+  body.addEventListener('touchmove', disableGestures);
+  body.addEventListener('touchend', disableGestures);
+
   var mainDiv = document.createElement('div');
   mainDiv.className = 'main';
   mainDiv.id = 'main';