Cherry picking r9434 into release branch for issue #5538.
git-svn-id: https://google-web-toolkit.googlecode.com/svn/releases/2.1@9452 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/user/src/com/google/gwt/dom/client/DOMImplIE8.java b/user/src/com/google/gwt/dom/client/DOMImplIE8.java
index 2b65cd8..0c29ccc 100644
--- a/user/src/com/google/gwt/dom/client/DOMImplIE8.java
+++ b/user/src/com/google/gwt/dom/client/DOMImplIE8.java
@@ -17,6 +17,41 @@
class DOMImplIE8 extends DOMImplTrident {
+ private static boolean isIE8;
+ private static boolean isIE8Detected;
+
+ /**
+ * Check if the browser is IE8 or IE9.
+ *
+ * @return <code>true</code> if the browser is IE8, <code>false</code> if IE9
+ * or any other browser
+ */
+ static boolean isIE8() {
+ if (!isIE8Detected) {
+ isIE8 = isIE8Impl();
+ isIE8Detected = true;
+ }
+ return isIE8;
+ }
+
+ // Stolen and modified from UserAgent.gwt.xml.
+ private static native boolean isIE8Impl() /*-{
+ var ua = navigator.userAgent.toLowerCase();
+ if (ua.indexOf("msie") != -1 && $doc.documentMode == 8) {
+ return true;
+ }
+ return false;
+ }-*/;
+
+ @Override
+ public void cssSetOpacity(Style style, double value) {
+ if (isIE8()) {
+ cssSetOpacityImpl(style, value);
+ } else {
+ super.cssSetOpacity(style, value);
+ }
+ }
+
@Override
public int getAbsoluteLeft(Element elem) {
Document doc = elem.getOwnerDocument();
@@ -46,4 +81,8 @@
}
super.setScrollLeft(elem, left);
}
+
+ private native void cssSetOpacityImpl(Style style, double value) /*-{
+ style.filter = 'alpha(opacity=' + (value * 100) + ')';
+ }-*/;
}
