本文整理汇总了C++中WidgetKeyboardEvent::ShouldCauseKeypressEvents方法的典型用法代码示例。如果您正苦于以下问题：C++ WidgetKeyboardEvent::ShouldCauseKeypressEvents方法的具体用法？C++ WidgetKeyboardEvent::ShouldCauseKeypressEvents怎么用？C++ WidgetKeyboardEvent::ShouldCauseKeypressEvents使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类WidgetKeyboardEvent的用法示例。
在下文中一共展示了WidgetKeyboardEvent::ShouldCauseKeypressEvents方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: keyEvent
bool
TextEventDispatcher::DispatchKeyboardEventInternal(
uint32_t aMessage,
const WidgetKeyboardEvent& aKeyboardEvent,
nsEventStatus& aStatus,
uint32_t aIndexOfKeypress)
{
MOZ_ASSERT(aMessage == NS_KEY_DOWN || aMessage == NS_KEY_UP ||
aMessage == NS_KEY_PRESS, "Invalid aMessage value");
nsresult rv = GetState();
if (NS_WARN_IF(NS_FAILED(rv))) {
return false;
}
// If the key shouldn't cause keypress events, don't this patch them.
if (aMessage == NS_KEY_PRESS && !aKeyboardEvent.ShouldCauseKeypressEvents()) {
return false;
}
// Basically, key events shouldn't be dispatched during composition.
if (IsComposing()) {
// However, if we need to behave like other browsers, we need the keydown
// and keyup events. Note that this behavior is also allowed by D3E spec.
// FYI: keypress events must not be fired during composition.
if (!sDispatchKeyEventsDuringComposition || aMessage == NS_KEY_PRESS) {
return false;
}
// XXX If there was mOnlyContentDispatch for this case, it might be useful
// because our chrome doesn't assume that key events are fired during
// composition.
}
WidgetKeyboardEvent keyEvent(true, aMessage, mWidget);
InitEvent(keyEvent);
keyEvent.AssignKeyEventData(aKeyboardEvent, false);
if (aStatus == nsEventStatus_eConsumeNoDefault) {
// If the key event should be dispatched as consumed event, marking it here.
// This is useful to prevent double action. E.g., when the key was already
// handled by system, our chrome shouldn't handle it.
keyEvent.mFlags.mDefaultPrevented = true;
}
// Corrects each member for the specific key event type.
if (aMessage == NS_KEY_DOWN || aMessage == NS_KEY_UP) {
MOZ_ASSERT(!aIndexOfKeypress,
"aIndexOfKeypress must be 0 for either NS_KEY_DOWN or NS_KEY_UP");
// charCode of keydown and keyup should be 0.
keyEvent.charCode = 0;
} else if (keyEvent.mKeyNameIndex != KEY_NAME_INDEX_USE_STRING) {
MOZ_ASSERT(!aIndexOfKeypress,
"aIndexOfKeypress must be 0 for NS_KEY_PRESS of non-printable key");
// If keypress event isn't caused by printable key, its charCode should
// be 0.
keyEvent.charCode = 0;
} else {
MOZ_RELEASE_ASSERT(
!aIndexOfKeypress || aIndexOfKeypress < keyEvent.mKeyValue.Length(),
"aIndexOfKeypress must be 0 - mKeyValue.Length() - 1");
keyEvent.keyCode = 0;
wchar_t ch =
keyEvent.mKeyValue.IsEmpty() ? 0 : keyEvent.mKeyValue[aIndexOfKeypress];
keyEvent.charCode = static_cast<uint32_t>(ch);
if (ch) {
keyEvent.mKeyValue.Assign(ch);
} else {
keyEvent.mKeyValue.Truncate();
}
}
if (aMessage == NS_KEY_UP) {
// mIsRepeat of keyup event must be false.
keyEvent.mIsRepeat = false;
}
// mIsComposing should be initialized later.
keyEvent.mIsComposing = false;
// XXX Currently, we don't support to dispatch key event with native key
// event information.
keyEvent.mNativeKeyEvent = nullptr;
// XXX Currently, we don't support to dispatch key events with data for
// plugins.
keyEvent.mPluginEvent.Clear();
// TODO: Manage mUniqueId here.
DispatchEvent(mWidget, keyEvent, aStatus);
return true;
}