static eEventAction
GetActionForEvent(nsIDOMEvent* aEvent)
{
WidgetKeyboardEvent* keyEvent =
aEvent->GetInternalNSEvent()->AsKeyboardEvent();
if (!keyEvent) {
return eEventAction_Suppress;
}
if (keyEvent->mFlags.mInSystemGroup) {
NS_ASSERTION(keyEvent->message == NS_KEY_DOWN,
"Assuming we're listening only keydown event in system group");
return eEventAction_StopPropagation;
}
if (keyEvent->IsAlt() || keyEvent->IsControl() || keyEvent->IsMeta()) {
// Don't consume keydown event because following keypress event may be
// handled as access key or shortcut key.
return (keyEvent->message == NS_KEY_DOWN) ? eEventAction_StopPropagation :
eEventAction_Suppress;
}
static const uint32_t kOKKeyCodes[] = {
nsIDOMKeyEvent::DOM_VK_PAGE_UP, nsIDOMKeyEvent::DOM_VK_PAGE_DOWN,
nsIDOMKeyEvent::DOM_VK_UP, nsIDOMKeyEvent::DOM_VK_DOWN,
nsIDOMKeyEvent::DOM_VK_HOME, nsIDOMKeyEvent::DOM_VK_END
};
if (keyEvent->keyCode == nsIDOMKeyEvent::DOM_VK_TAB) {
return keyEvent->IsShift() ? eEventAction_ShiftTab : eEventAction_Tab;
}
if (keyEvent->charCode == ' ' || keyEvent->keyCode == NS_VK_SPACE) {
return eEventAction_Propagate;
}
if (keyEvent->IsShift()) {
return eEventAction_Suppress;
}
for (uint32_t i = 0; i < ArrayLength(kOKKeyCodes); ++i) {
if (keyEvent->keyCode == kOKKeyCodes[i]) {
return eEventAction_Propagate;
}
}
return eEventAction_Suppress;
}
bool
NativeKeyBindings::Execute(const WidgetKeyboardEvent& aEvent,
DoCommandCallback aCallback,
void* aCallbackData)
{
// If the native key event is set, it must be synthesized for tests.
// We just ignore such events because this behavior depends on system
// settings.
if (!aEvent.mNativeKeyEvent) {
// It must be synthesized event or dispatched DOM event from chrome.
return false;
}
guint keyval;
if (aEvent.mCharCode) {
keyval = gdk_unicode_to_keyval(aEvent.mCharCode);
} else {
keyval =
static_cast<GdkEventKey*>(aEvent.mNativeKeyEvent)->keyval;
}
if (ExecuteInternal(aEvent, aCallback, aCallbackData, keyval)) {
return true;
}
for (uint32_t i = 0; i < aEvent.mAlternativeCharCodes.Length(); ++i) {
uint32_t ch = aEvent.IsShift() ?
aEvent.mAlternativeCharCodes[i].mShiftedCharCode :
aEvent.mAlternativeCharCodes[i].mUnshiftedCharCode;
if (ch && ch != aEvent.mCharCode) {
keyval = gdk_unicode_to_keyval(ch);
if (ExecuteInternal(aEvent, aCallback, aCallbackData, keyval)) {
return true;
}
}
}
/*
gtk_bindings_activate_event is preferable, but it has unresolved bug:
http://bugzilla.gnome.org/show_bug.cgi?id=162726
The bug was already marked as FIXED. However, somebody reports that the
bug still exists.
Also gtk_bindings_activate may work with some non-shortcuts operations
(todo: check it). See bug 411005 and bug 406407.
Code, which should be used after fixing GNOME bug 162726:
gtk_bindings_activate_event(GTK_OBJECT(mNativeTarget),
static_cast<GdkEventKey*>(aEvent.mNativeKeyEvent));
*/
return false;
}