Use a standard title attribute for the control buttons

css/ol.css

@@ -131,65 +131,6 @@ button.ol-full-screen-true:after {
   content: "\00d7";
 }
 
-/* invisible but not hidden */
-.ol-has-tooltip [role=tooltip] {
-  position: absolute;
-  clip: rect(1px 1px 1px 1px); /* < IE8 */
-  clip: rect(1px, 1px, 1px, 1px);
-  padding: 0;
-  border: 0;
-  height: 1px;
-  width: 1px;
-  overflow: hidden;
-  font-weight: normal;
-  font-size: 14px;
-  text-shadow: 0 0 2px #fff;
-}
-
-/* show a tooltip offset to below and right */
-.ol-has-tooltip:hover [role=tooltip], .ol-has-tooltip:focus [role=tooltip] {
-  -moz-box-sizing: content-box;
-  -webkit-box-sizing: content-box;
-  box-sizing: content-box;
-  clip: auto;
-  padding: 0 .4em;
-  font-size: .8em;
-  height: 1.2em;
-  width: auto;
-  line-height: 1.2em;
-  z-index: 1100;
-  max-height: 100px;
-  white-space: nowrap;
-  display: inline-block;
-  background: #FFF;
-  background: rgba(255,255,255,0.6);
-  color: #000;
-  border: 3px solid rgba(255,255,255,0);
-  border-left-width: 0;
-  border-radius: 0 4px 4px 0;
-  bottom: .3em;
-  left: 2.2em;
-}
-.ol-touch .ol-has-tooltip:hover [role=tooltip],
-.ol-touch .ol-has-tooltip:focus [role=tooltip] {
-  display: none;
-}
-.ol-zoom .ol-has-tooltip:hover [role=tooltip],
-.ol-zoom .ol-has-tooltip:focus [role=tooltip] {
-  top: 1.1em;
-}
-.ol-rotate .ol-has-tooltip:hover [role=tooltip],
-.ol-rotate .ol-has-tooltip:focus [role=tooltip],
-.ol-attribution .ol-has-tooltip:hover [role=tooltip],
-.ol-attribution .ol-has-tooltip:focus [role=tooltip],
-.ol-full-screen .ol-has-tooltip:hover [role=tooltip],
-.ol-full-screen .ol-has-tooltip:focus [role=tooltip] {
-  right: 2.2em;
-  left: auto;
-  border-radius: 4px 0 0 4px;
-  border-left-width: 3px;
-  border-right-width: 0;
-}
 
 .ol-attribution {
   text-align: right;
@@ -222,7 +163,6 @@ button.ol-full-screen-true:after {
 .ol-attribution ul, .ol-attribution button {
   display: inline-block;
 }
-.ol-attribution:not(.ol-collapsed) button:hover [role=tooltip],
 .ol-attribution.ol-collapsed ul {
   display: none;
 }
@@ -284,8 +224,7 @@ button.ol-full-screen-true:after {
 
 .ol-control button,
 .ol-attribution,
-.ol-scale-line-inner,
+.ol-scale-line-inner {
-.ol-has-tooltip [role=tooltip] {
   font-family: 'Lucida Grande',Verdana,Geneva,Lucida,Arial,Helvetica,sans-serif;
 }
 
@@ -314,7 +253,6 @@ button.ol-full-screen-true:after {
   left: 2px;
   position: absolute;
 }
-.ol-overviewmap:not(.ol-collapsed) button:hover [role=tooltip],
 .ol-overviewmap.ol-collapsed .ol-overviewmap-map,
 .ol-overviewmap.ol-uncollapsible button {
   display: none;

src/ol/control/attributioncontrol.js

@@ -69,9 +69,6 @@ ol.control.Attribution = function(opt_options) {
 
   var tipLabel = goog.isDef(options.tipLabel) ?
       options.tipLabel : 'Attributions';
-  var tip = goog.dom.createDom(goog.dom.TagName.SPAN, {
-    'role' : 'tooltip'
-  }, tipLabel);
 
   /**
    * @private
@@ -96,10 +93,9 @@ ol.control.Attribution = function(opt_options) {
    */
   this.labelSpan_ = label;
   var button = goog.dom.createDom(goog.dom.TagName.BUTTON, {
-    'class': 'ol-has-tooltip',
+    'type': 'button',
-    'type': 'button'
+    'title': tipLabel
   }, this.labelSpan_);
-  goog.dom.appendChild(button, tip);
 
   var buttonHandler = new ol.pointer.PointerEventHandler(button);
   this.registerDisposable(buttonHandler);

src/ol/control/fullscreencontrol.js

@@ -40,16 +40,11 @@ ol.control.FullScreen = function(opt_options) {
 
   var tipLabel = goog.isDef(options.tipLabel) ?
       options.tipLabel : 'Toggle full-screen';
-  var tip = goog.dom.createDom(goog.dom.TagName.SPAN, {
-    'role' : 'tooltip'
-  }, tipLabel);
-
   var button = goog.dom.createDom(goog.dom.TagName.BUTTON, {
-    'class': this.cssClassName_ + '-' + goog.dom.fullscreen.isFullScreen() +
+    'class': this.cssClassName_ + '-' + goog.dom.fullscreen.isFullScreen(),
-        ' ol-has-tooltip',
+    'type': 'button',
-    'type': 'button'
+    'title': tipLabel
   });
-  goog.dom.appendChild(button, tip);
   var buttonHandler = new ol.pointer.PointerEventHandler(button);
   this.registerDisposable(buttonHandler);
   goog.events.listen(buttonHandler,

src/ol/control/overviewmapcontrol.js

@@ -57,9 +57,6 @@ ol.control.OverviewMap = function(opt_options) {
 
   var tipLabel = goog.isDef(options.tipLabel) ?
       options.tipLabel : 'Overview map';
-  var tip = goog.dom.createDom(goog.dom.TagName.SPAN, {
-    'role' : 'tooltip'
-  }, tipLabel);
 
   /**
    * @private
@@ -83,10 +80,9 @@ ol.control.OverviewMap = function(opt_options) {
    */
   this.labelSpan_ = label;
   var button = goog.dom.createDom(goog.dom.TagName.BUTTON, {
-    'class': 'ol-has-tooltip',
+    'type': 'button',
-    'type': 'button'
+    'title': tipLabel
   }, this.labelSpan_);
-  goog.dom.appendChild(button, tip);
 
   var buttonHandler = new ol.pointer.PointerEventHandler(button);
   this.registerDisposable(buttonHandler);

src/ol/control/rotatecontrol.js

@@ -44,13 +44,11 @@ ol.control.Rotate = function(opt_options) {
   var tipLabel = goog.isDef(options.tipLabel) ?
       options.tipLabel : 'Reset rotation';
 
-  var tip = goog.dom.createDom(goog.dom.TagName.SPAN, {
-    'role' : 'tooltip'
-  }, tipLabel);
   var button = goog.dom.createDom(goog.dom.TagName.BUTTON, {
-    'class': className + '-reset ol-has-tooltip',
+    'class': className + '-reset',
-    'type' : 'button'
+    'type' : 'button',
-  }, tip, this.label_);
+    'title': tipLabel
+  }, this.label_);
 
   var handler = new ol.pointer.PointerEventHandler(button);
   this.registerDisposable(handler);

src/ol/control/zoomcontrol.js

@@ -41,13 +41,11 @@ ol.control.Zoom = function(opt_options) {
   var zoomOutTipLabel = goog.isDef(options.zoomOutTipLabel) ?
       options.zoomOutTipLabel : 'Zoom out';
 
-  var tTipZoomIn = goog.dom.createDom(goog.dom.TagName.SPAN, {
-    'role' : 'tooltip'
-  }, zoomInTipLabel);
   var inElement = goog.dom.createDom(goog.dom.TagName.BUTTON, {
-    'class': className + '-in ol-has-tooltip',
+    'class': className + '-in',
-    'type' : 'button'
+    'type' : 'button',
-  }, tTipZoomIn, zoomInLabel);
+    'title': zoomInTipLabel
+  }, zoomInLabel);
 
   var inElementHandler = new ol.pointer.PointerEventHandler(inElement);
   this.registerDisposable(inElementHandler);
@@ -65,13 +63,11 @@ ol.control.Zoom = function(opt_options) {
     this.blur();
   }, false);
 
-  var tTipsZoomOut = goog.dom.createDom(goog.dom.TagName.SPAN, {
-    'role' : 'tooltip'
-  }, zoomOutTipLabel);
   var outElement = goog.dom.createDom(goog.dom.TagName.BUTTON, {
-    'class': className + '-out  ol-has-tooltip',
+    'class': className + '-out',
-    'type' : 'button'
+    'type' : 'button',
-  }, tTipsZoomOut, zoomOutLabel);
+    'title': zoomOutTipLabel
+  }, zoomOutLabel);
 
   var outElementHandler = new ol.pointer.PointerEventHandler(outElement);
   this.registerDisposable(outElementHandler);

src/ol/control/zoomtoextentcontrol.js

@@ -35,14 +35,10 @@ ol.control.ZoomToExtent = function(opt_options) {
 
   var tipLabel = goog.isDef(options.tipLabel) ?
       options.tipLabel : 'Fit to extent';
-  var tip = goog.dom.createDom(goog.dom.TagName.SPAN, {
-    'role' : 'tooltip'
-  }, tipLabel);
   var button = goog.dom.createDom(goog.dom.TagName.BUTTON, {
-    'class': 'ol-has-tooltip',
+    'type': 'button',
-    'type': 'button'
+    'title': tipLabel
   });
-  goog.dom.appendChild(button, tip);
 
   var buttonHandler = new ol.pointer.PointerEventHandler(button);
   this.registerDisposable(buttonHandler);