I'm probably not doing this the right way but, I've been trying to
extend MouseEvent to support HTML5 Drag and Drop (drag, dragenter,
etc. etc.).
I've created a:
Has...Handlers interface
bunch of Handler classes (DropHandler, DragEnterHandler, etc)
and a bunch of Event classes that extend MouseEvent (DropEvent,
DragEnterEvent, etc).
I've also created a DropTarget Widget that implements the
Has...Handlers interface which accepts a Widget as a param in its
contructor which then calls setElement() passing in widget.getElement
()...
I then add this DropTarget to the RootPanel (for testing purposes) in
an onModuleLoad.
But I'm getting a low level error ("Something other than an int was
returned from JSNI method"):
com.google.gwt.dev.shell.HostedModeException: Something other than an
int was returned from JSNI method
'@com.google.gwt.user.client.impl.DOMImpl::eventGetTypeInt(Ljava/lang/
String;)': JS value of type undefined, expected int
at com.google.gwt.dev.shell.JsValueGlue.getIntRange
(JsValueGlue.java:266)
at com.google.gwt.dev.shell.JsValueGlue.get(JsValueGlue.java:144)
at com.google.gwt.dev.shell.ModuleSpace.invokeNativeInt
(ModuleSpace.java:242)
at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeInt
(JavaScriptHost.java:75)
at com.google.gwt.user.client.impl.DOMImpl.eventGetTypeInt
(DOMImpl.java)
at com.google.gwt.user.client.Event$.getTypeInt(Event.java:491)
at com.google.gwt.user.client.ui.Widget.addDomHandler(Widget.java:
184)
at
com.applegreen.gwt.html5.dnd.client.DropTarget.addDragEnterHandler
(DropTarget.java:44)
at com.applegreen.gwt.test.client.DragAndDropTest.onModuleLoad
(DragAndDropTest.java:46)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.gwt.dev.shell.ModuleSpace.onLoad(ModuleSpace.java:
369)
at com.google.gwt.dev.shell.OophmSessionHandler.loadModule
(OophmSessionHandler.java:185)
at com.google.gwt.dev.shell.BrowserChannelServer.processConnection
(BrowserChannelServer.java:380)
at com.google.gwt.dev.shell.BrowserChannelServer.run
(BrowserChannelServer.java:222)
at java.lang.Thread.run(Unknown Source)
Can anyone shed any light on what I'm doing wrong or what method I
should have overidden (I'm not a java programmer btw)??
Cheers,
Dave
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