<Swing Dev> RFR JDK-8232927:ToolTipManager is unable to force heavy weight popups

[Prasanta Sadhukhan]

Hi All,

Please review a fix for an issue whereby Java developer is not able to 
to force the tooltips to be displayed in a heavyweight popup.

In ToolTipManager#showTipWindow() , even if we do 
"ToolTipManager.setLightWeightPopupEnabled(false)" we can only force a 
medium weight popup as can be seen here

[http://hg.openjdk.java.net/jdk/client/file/f054a3a03050/src/java.desktop/share/classes/javax/swing/ToolTipManager.java#l338]

In addition, there is also a field "heavyWeightPopupEnabled" inside the 
ToolTipManager which is not used..
There should be at least one way to force a heavy weight popup in the 
ToolTipManager.

Proposed fix is to give an option to developer to force tooltip to be 
displayed in HW. CSR will be raised after technical review

Bug: https://bugs.openjdk.java.net/browse/JDK-8232927

webrev: http://cr.openjdk.java.net/~psadhukhan/8232927/webrev.0

Regards
Prasanta