firefox-main/layout/forms/ButtonControlFrame.cpp (file symbol)

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "ButtonControlFrame.h"
/* Abstract base class for special button frames (but not <button>) */
using namespace mozilla;
namespace mozilla {
void ButtonControlFrame::EnsureNonEmptyLabel(nsAString& aLabel) {
if (aLabel.IsEmpty()) {
// Have to use a space character of some sort for line-block-size
// calculations to be right. Also, the space character must be zero-width in
// order for the inline-size calculations to be consistent between
// size-contained comboboxes vs. empty comboboxes.
//
// XXXdholbert Does this space need to be "non-breaking"? I'm not sure if it
// matters, but we previously had a comment here (added in 2002) saying
// "Have to use a non-breaking space for line-height calculations to be
// right". So I'll stick with a non-breaking space for now...
aLabel = u"\ufeff"_ns;
}
}
nsresult ButtonControlFrame::HandleEvent(nsPresContext* aPresContext,
WidgetGUIEvent* aEvent,
nsEventStatus* aEventStatus) {
// Override HandleEvent to prevent the inherited version from being called
// when disabled.
if (IsContentDisabled()) {
return nsBlockFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
}
return NS_OK;
}
void ButtonControlFrame::Reflow(nsPresContext* aPc, ReflowOutput& aReflowOutput,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) {
nsBlockFrame::Reflow(aPc, aReflowOutput, aReflowInput, aStatus);
// We're always complete and we don't support overflow containers
// so we shouldn't have a next-in-flow ever.
aStatus.Reset();
}
} // namespace mozilla