예제 #1
0
nsresult
TextComposition::RequestToCommit(nsIWidget* aWidget, bool aDiscard)
{
  // If this composition is already requested to be committed or canceled,
  // or has already finished in IME, we don't need to request it again because
  // request from this instance shouldn't cause committing nor canceling current
  // composition in IME, and even if the first request failed, new request
  // won't success, probably.  And we shouldn't synthesize events for
  // committing or canceling composition twice or more times.
  if (!CanRequsetIMEToCommitOrCancelComposition()) {
    return NS_OK;
  }

  RefPtr<TextComposition> kungFuDeathGrip(this);
  const nsAutoString lastData(mLastData);

  {
    AutoRestore<bool> saveRequestingCancel(mIsRequestingCancel);
    AutoRestore<bool> saveRequestingCommit(mIsRequestingCommit);
    if (aDiscard) {
      mIsRequestingCancel = true;
      mIsRequestingCommit = false;
    } else {
      mIsRequestingCancel = false;
      mIsRequestingCommit = true;
    }
    // FYI: CompositionEvents caused by a call of NotifyIME() may be
    //      discarded by PresShell if it's not safe to dispatch the event.
    nsresult rv =
      aWidget->NotifyIME(IMENotification(aDiscard ?
                                           REQUEST_TO_CANCEL_COMPOSITION :
                                           REQUEST_TO_COMMIT_COMPOSITION));
    if (NS_WARN_IF(NS_FAILED(rv))) {
      return rv;
    }
  }

  mRequestedToCommitOrCancel = true;

  // If the request is performed synchronously, this must be already destroyed.
  if (Destroyed()) {
    return NS_OK;
  }

  // Otherwise, synthesize the commit in content.
  nsAutoString data(aDiscard ? EmptyString() : lastData);
  if (data == mLastData) {
    DispatchCompositionEventRunnable(eCompositionCommitAsIs, EmptyString(),
                                     true);
  } else {
    DispatchCompositionEventRunnable(eCompositionCommit, data, true);
  }
  return NS_OK;
}
예제 #2
0
void
TextComposition::SynthesizeCommit(bool aDiscard)
{
  nsRefPtr<TextComposition> kungFuDeathGrip(this);
  nsAutoString data(aDiscard ? EmptyString() : mLastData);
  if (mLastData != data) {
    DispatchCompositionEventRunnable(NS_COMPOSITION_UPDATE, data);
    DispatchCompositionEventRunnable(NS_TEXT_TEXT, data);
  }
  DispatchCompositionEventRunnable(NS_COMPOSITION_END, data);
}
예제 #3
0
nsresult
TextComposition::RequestToCommit(nsIWidget* aWidget, bool aDiscard)
{
  // If this composition is already requested to be committed or canceled,
  // we don't need to request it again because even if the first request
  // failed, new request won't success, probably.  And we shouldn't synthesize
  // events for committing or canceling composition twice or more times.
  if (mRequestedToCommitOrCancel) {
    return NS_OK;
  }

  nsRefPtr<TextComposition> kungFuDeathGrip(this);
  const nsAutoString lastData(mLastData);

  {
    AutoRestore<bool> saveRequestingCancel(mIsRequestingCancel);
    AutoRestore<bool> saveRequestingCommit(mIsRequestingCommit);
    if (aDiscard) {
      mIsRequestingCancel = true;
      mIsRequestingCommit = false;
    } else {
      mIsRequestingCancel = false;
      mIsRequestingCommit = true;
    }
    if (!mIsSynthesizedForTests) {
      // FYI: CompositionEvent and TextEvent caused by a call of NotifyIME()
      //      may be discarded by PresShell if it's not safe to dispatch the
      //      event.
      nsresult rv =
        aWidget->NotifyIME(IMENotification(aDiscard ?
                                             REQUEST_TO_CANCEL_COMPOSITION :
                                             REQUEST_TO_COMMIT_COMPOSITION));
      if (rv == NS_ERROR_NOT_IMPLEMENTED) {
        return rv;
      }
      if (NS_WARN_IF(NS_FAILED(rv))) {
        return rv;
      }
    } else {
      // Emulates to commit or cancel the composition
      // FYI: These events may be discarded by PresShell if it's not safe to
      //      dispatch the event.
      nsCOMPtr<nsIWidget> widget(aWidget);
      nsAutoString commitData(aDiscard ? EmptyString() : lastData);
      bool changingData = lastData != commitData;

      WidgetTextEvent textEvent(true, NS_TEXT_TEXT, widget);
      textEvent.theText = commitData;
      textEvent.mFlags.mIsSynthesizedForTests = true;

      MaybeDispatchCompositionUpdate(&textEvent);

      // If changing the data or committing string isn't empty, we need to
      // dispatch text event for setting the composition string without
      // IME selection.
      if (!Destroyed() && !widget->Destroyed() &&
          (changingData || !commitData.IsEmpty())) {
        nsEventStatus status = nsEventStatus_eIgnore;
        widget->DispatchEvent(&textEvent, status);
      }

      if (!Destroyed() && !widget->Destroyed()) {
        nsEventStatus status = nsEventStatus_eIgnore;
        WidgetCompositionEvent endEvent(true, NS_COMPOSITION_END, widget);
        endEvent.data = commitData;
        endEvent.mFlags.mIsSynthesizedForTests = true;
        widget->DispatchEvent(&endEvent, status);
      }
    }
  }

  mRequestedToCommitOrCancel = true;

  // If the request is performed synchronously, this must be already destroyed.
  if (Destroyed()) {
    return NS_OK;
  }

  // Otherwise, synthesize the commit in content.
  nsAutoString data(aDiscard ? EmptyString() : lastData);
  bool changingData = lastData != data;
  if (changingData) {
    DispatchCompositionEventRunnable(NS_COMPOSITION_UPDATE, data, true);
  }
  // If the last composition string and new data are different, we need to
  // dispatch text event for removing IME selection.  However, if the commit
  // string is empty string and it's not changed from the last data, we don't
  // need to dispatch text event.
  if (changingData || !data.IsEmpty()) {
    DispatchCompositionEventRunnable(NS_TEXT_TEXT, data, true);
  }
  DispatchCompositionEventRunnable(NS_COMPOSITION_END, data, true);

  return NS_OK;
}