long /*int*/ getSiteWindow() {
/*
* As of XULRunner 4, XULRunner's printing facilities on Windows destroy
* the HWND that is returned from here once the print dialog is dismissed
* (originating bug: https://bugzilla.mozilla.org/show_bug.cgi?id=588735 ).
* For this scenario it is now expected that the handle that is returned
* here is a child of the browser handle, not the browser handle itself.
*
* The other scenario that requests this handle is the Mozilla.getBrowser()
* implementation. This method's GetSiteWindow() invocation is surrounded
* by boolean flags to help differentiate it from the printing scenario,
* since Mozilla.getBrowser() does not destroy the handle it receives back.
*
* All children that are created here are stored and then destroyed once
* the current page is left. This is guard code that should only be needed
* if Mozilla.getSiteWindow() is ever invoked by a path other than one of
* the two described above.
*/
if (!MozillaVersion.CheckVersion(MozillaVersion.VERSION_XR10) || Mozilla.IsGettingSiteWindow) {
return getHandle();
}
Composite child = new Composite(browser, SWT.NONE);
childWindows.add(child);
return child.handle;
}
void init() {
if (MozillaVersion.CheckVersion(MozillaVersion.VERSION_XR10)) {
/*
* In XULRunner versions > 4, sending WM_GETDLGCODE to a WM_KEYDOWN's MSG hwnd answers 0
* instead of the expected DLGC_WANTALLKEYS. This causes the default traversal framework
* perform traversals outside of the Browser when it should not. Hook a Traverse listener
* to work around these problems.
*/
browser.addListener(
SWT.Traverse,
event -> {
switch (event.detail) {
case SWT.TRAVERSE_RETURN:
{
/* always veto the traversal */
event.doit = false;
break;
}
case SWT.TRAVERSE_TAB_NEXT:
case SWT.TRAVERSE_TAB_PREVIOUS:
{
/* veto the traversal whenever an element in the browser has focus */
long /*int*/[] result = new long /*int*/[1];
int rc = XPCOM.NS_GetServiceManager(result);
if (rc != XPCOM.NS_OK) Mozilla.error(rc);
if (result[0] == 0) Mozilla.error(XPCOM.NS_NOINTERFACE);
nsIServiceManager serviceManager = new nsIServiceManager(result[0]);
result[0] = 0;
byte[] aContractID =
MozillaDelegate.wcsToMbcs(null, XPCOM.NS_FOCUSMANAGER_CONTRACTID, true);
rc =
serviceManager.GetServiceByContractID(
aContractID,
IIDStore.GetIID(nsIFocusManager.class, MozillaVersion.VERSION_XR10),
result);
serviceManager.Release();
if (rc == XPCOM.NS_OK && result[0] != 0) {
nsIFocusManager focusManager = new nsIFocusManager(result[0]);
result[0] = 0;
rc = focusManager.GetFocusedElement(result);
focusManager.Release();
event.doit = result[0] == 0;
if (rc == XPCOM.NS_OK && result[0] != 0) {
new nsISupports(result[0]).Release();
}
}
break;
}
}
});
/* children created in getSiteHandle() should be destroyed whenever a page is left */
browser.addLocationListener(
new LocationAdapter() {
@Override
public void changing(LocationEvent event) {
Iterator<Composite> it = childWindows.iterator();
while (it.hasNext()) {
it.next().dispose();
}
childWindows.clear();
}
});
}
}