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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 */
#include "nsColorControlFrame.h"
#include "nsContentCreatorFunctions.h"
#include "nsContentUtils.h"
#include "nsCSSPseudoElements.h"
#include "nsGkAtoms.h"
#include "nsIFormControl.h"
#include "mozilla/PresShell.h"
#include "mozilla/dom/HTMLInputElement.h"
#include "mozilla/dom/Document.h"
using namespace mozilla;
using mozilla::dom::CallerType;
using mozilla::dom::Document;
using mozilla::dom::Element;
using mozilla::dom::HTMLInputElement;
nsColorControlFrame::nsColorControlFrame(ComputedStyle* aStyle,
nsPresContext* aPresContext)
: nsHTMLButtonControlFrame(aStyle, aPresContext, kClassID) {}
nsIFrame* NS_NewColorControlFrame(PresShell* aPresShell,
ComputedStyle* aStyle) {
return new (aPresShell)
nsColorControlFrame(aStyle, aPresShell->GetPresContext());
void nsColorControlFrame::Destroy(DestroyContext& aContext) {
nsresult nsColorControlFrame::GetFrameName(nsAString& aResult) const {
return MakeFrameName(u"ColorControl"_ns, aResult);
// Create the color area for the button.
// The frame will be generated by the frame constructor.
nsresult nsColorControlFrame::CreateAnonymousContent(
nsTArray<ContentInfo>& aElements) {
RefPtr<Document> doc = mContent->GetComposedDoc();
mColorContent = doc->CreateHTMLElement(nsGkAtoms::div);
// Mark the element to be native anonymous before setting any attributes.
nsresult rv = UpdateColor();
// XXX(Bug 1631371) Check if this should use a fallible operation as it
// pretended earlier.
return NS_OK;
void nsColorControlFrame::AppendAnonymousContentTo(
nsTArray<nsIContent*>& aElements, uint32_t aFilter) {
if (mColorContent) {
nsresult nsColorControlFrame::UpdateColor() {
// Get the color from the "value" property of our content; it will return the
// default color (through the sanitization algorithm) if the value is empty.
nsAutoString color;
HTMLInputElement* elt = HTMLInputElement::FromNode(mContent);
elt->GetValue(color, CallerType::System);
if (color.IsEmpty()) {
// OK, there is one case the color string might be empty -- if our content
// is still being created, i.e. if it has mDoneCreating==false. In that
// case, we simply do nothing, because we'll be called again with a complete
// content node before we ever reflow or paint. Specifically: we can expect
// that HTMLInputElement::DoneCreatingElement() will set mDoneCreating to
// true (which enables sanitization) and then it'll call SetValueInternal(),
// which produces a nonempty color (via sanitization), and then it'll call
// this function here, and we'll get the nonempty default color.
"Content node's GetValue() should return a valid color string "
"by the time we've been reflowed (the default color, in case "
"no valid color is set)");
return NS_OK;
// Set the background-color CSS property of the swatch element to this color.
return mColorContent->SetAttr(kNameSpaceID_None, nsGkAtoms::style,
u"background-color:"_ns + color,
/* aNotify */ true);
nsresult nsColorControlFrame::AttributeChanged(int32_t aNameSpaceID,
nsAtom* aAttribute,
int32_t aModType) {
NS_ASSERTION(mColorContent, "The color div must exist");
// If the value attribute is set, update the color box, but only if we're
// still a color control, which might not be the case if the type attribute
// was removed/changed.
if (nsIFormControl::FromNode(GetContent())->ControlType() ==
FormControlType::InputColor &&
aNameSpaceID == kNameSpaceID_None && nsGkAtoms::value == aAttribute) {
return nsHTMLButtonControlFrame::AttributeChanged(aNameSpaceID, aAttribute,
nsContainerFrame* nsColorControlFrame::GetContentInsertionFrame() {
return this;