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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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"
#include "mozilla/PresShell.h"
#include "mozilla/dom/HTMLInputElement.h"
#include "nsContentUtils.h"
#include "nsIFormControl.h"
#include "nsTextNode.h"
using namespace mozilla;
namespace mozilla {
/* A frame for <input type={button,reset,submit} */
class InputButtonControlFrame final : public ButtonControlFrame {
public:
InputButtonControlFrame(ComputedStyle* aStyle, nsPresContext* aPc)
: ButtonControlFrame(aStyle, aPc, kClassID) {}
NS_DECL_FRAMEARENA_HELPERS(InputButtonControlFrame)
#ifdef DEBUG_FRAME_DUMP
nsresult GetFrameName(nsAString& aResult) const override {
return MakeFrameName(u"InputButtonControl"_ns, aResult);
}
#endif
void Destroy(DestroyContext&) override;
// nsIAnonymousContentCreator
nsresult CreateAnonymousContent(nsTArray<ContentInfo>&) override;
void AppendAnonymousContentTo(nsTArray<nsIContent*>&,
uint32_t aFilter) override;
protected:
nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
AttrModType aModType) override;
void GetDefaultLabel(nsAString&) const;
void GetLabel(nsAString& aLabel);
void UpdateLabel();
RefPtr<nsTextNode> mTextContent;
};
NS_IMPL_FRAMEARENA_HELPERS(InputButtonControlFrame);
void InputButtonControlFrame::Destroy(DestroyContext& aContext) {
aContext.AddAnonymousContent(mTextContent.forget());
ButtonControlFrame::Destroy(aContext);
}
// Create the text content used as label for the button.
// The frame will be generated by the frame constructor.
nsresult InputButtonControlFrame::CreateAnonymousContent(
nsTArray<ContentInfo>& aElements) {
nsAutoString label;
GetLabel(label);
// Add a child text content node for the label
mTextContent = new (mContent->NodeInfo()->NodeInfoManager())
nsTextNode(mContent->NodeInfo()->NodeInfoManager());
// set the value of the text node and add it to the child list
mTextContent->SetText(label, false);
aElements.AppendElement(mTextContent);
return NS_OK;
}
void InputButtonControlFrame::AppendAnonymousContentTo(
nsTArray<nsIContent*>& aElements, uint32_t aFilter) {
if (mTextContent) {
aElements.AppendElement(mTextContent);
}
}
// Initially we hardcoded the default strings here.
// Next, we used html.css to store the default label for various types
// of buttons. (nsGfxButtonControlFrame::DoNavQuirksReflow rev 1.20)
// However, since html.css is not internationalized, we now grab the default
// label from a string bundle as is done for all other UI strings.
// See bug 16999 for further details.
void InputButtonControlFrame::GetDefaultLabel(nsAString& aLabel) const {
const auto* form = nsIFormControl::FromNode(mContent);
MOZ_ASSERT(form);
auto type = form->ControlType();
nsCString prop;
if (type == FormControlType::InputReset) {
prop.AssignLiteral("Reset");
} else if (type == FormControlType::InputSubmit) {
prop.AssignLiteral("Submit");
} else {
aLabel.Truncate();
return;
}
if (NS_FAILED(nsContentUtils::GetMaybeLocalizedString(
nsContentUtils::eFORMS_PROPERTIES, prop.get(), mContent->OwnerDoc(),
aLabel))) {
// Use the non-localized version.
CopyUTF8toUTF16(prop, aLabel);
}
}
void InputButtonControlFrame::GetLabel(nsAString& aLabel) {
// Get the text from the "value" property on our content if there is
// one; otherwise set it to a default value (localized).
auto* elt = dom::HTMLInputElement::FromNode(mContent);
if (elt && elt->HasAttr(nsGkAtoms::value)) {
elt->GetValue(aLabel, dom::CallerType::System);
} else {
// Generate localized label.
// We can't make any assumption as to what the default would be
// because the value is localized for non-english platforms, thus
// it might not be the string "Reset", "Submit Query", or "Browse..."
GetDefaultLabel(aLabel);
}
// Compress whitespace out of label if needed.
if (!StyleText()->WhiteSpaceIsSignificant()) {
aLabel.CompressWhitespace();
} else if (aLabel.Length() > 2 && aLabel.First() == ' ' &&
aLabel.CharAt(aLabel.Length() - 1) == ' ') {
// This is a bit of a hack. The reason this is here is as follows: we now
// have default padding on our buttons to make them non-ugly.
// Unfortunately, IE-windows does not have such padding, so people will
// stick values like " ok " (with the spaces) in the buttons in an attempt
// to make them look decent. Unfortunately, if they do this the button
// looks way too big in Mozilla. Worse yet, if they do this _and_ set a
// fixed width for the button we run into trouble because our focus-rect
// border/padding and outer border take up 10px of the horizontal button
// space or so; the result is that the text is misaligned. So to solve
// this, even if the whitespace is significant, single leading and trailing
// _spaces_ (and not other whitespace) are removed. The proper solution,
// of course, is to not have the focus rect painting taking up 6px of
// horizontal space. We should do that instead (changing the renderer) and
// remove this.
//
// TODO(emilio): We should be able to remove this now, we no longer have
// inner focus rects.
aLabel.Cut(0, 1);
aLabel.Truncate(aLabel.Length() - 1);
}
}
void InputButtonControlFrame::UpdateLabel() {
if (!mTextContent) {
return;
}
nsAutoString label;
GetLabel(label);
mTextContent->SetText(label, true);
}
nsresult InputButtonControlFrame::AttributeChanged(int32_t aNameSpaceID,
nsAtom* aAttribute,
AttrModType aModType) {
// If the value attribute is set, update the text of the label
if (nsGkAtoms::value == aAttribute) {
UpdateLabel();
}
return nsBlockFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
}
} // namespace mozilla
nsIFrame* NS_NewInputButtonControlFrame(PresShell* aPresShell,
ComputedStyle* aStyle) {
return new (aPresShell)
InputButtonControlFrame(aStyle, aPresShell->GetPresContext());
}
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