forked from mirrors/gecko-dev
130 lines
5.1 KiB
C++
130 lines
5.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsColorControlFrame.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsContentUtils.h"
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#include "nsCSSPseudoElements.h"
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#include "nsCheckboxRadioFrame.h"
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#include "nsGkAtoms.h"
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#include "nsIFormControl.h"
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#include "mozilla/dom/HTMLInputElement.h"
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#include "mozilla/dom/Document.h"
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using namespace mozilla;
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using mozilla::dom::CallerType;
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using mozilla::dom::Document;
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using mozilla::dom::Element;
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using mozilla::dom::HTMLInputElement;
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nsColorControlFrame::nsColorControlFrame(ComputedStyle* aStyle,
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nsPresContext* aPresContext)
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: nsHTMLButtonControlFrame(aStyle, aPresContext, kClassID) {}
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nsIFrame* NS_NewColorControlFrame(nsIPresShell* aPresShell,
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ComputedStyle* aStyle) {
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return new (aPresShell)
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nsColorControlFrame(aStyle, aPresShell->GetPresContext());
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsColorControlFrame)
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NS_QUERYFRAME_HEAD(nsColorControlFrame)
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NS_QUERYFRAME_ENTRY(nsColorControlFrame)
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NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
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NS_QUERYFRAME_TAIL_INHERITING(nsHTMLButtonControlFrame)
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void nsColorControlFrame::DestroyFrom(nsIFrame* aDestructRoot,
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PostDestroyData& aPostDestroyData) {
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nsCheckboxRadioFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), false);
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aPostDestroyData.AddAnonymousContent(mColorContent.forget());
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nsHTMLButtonControlFrame::DestroyFrom(aDestructRoot, aPostDestroyData);
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}
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#ifdef DEBUG_FRAME_DUMP
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nsresult nsColorControlFrame::GetFrameName(nsAString& aResult) const {
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return MakeFrameName(NS_LITERAL_STRING("ColorControl"), aResult);
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}
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#endif
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// Create the color area for the button.
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// The frame will be generated by the frame constructor.
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nsresult nsColorControlFrame::CreateAnonymousContent(
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nsTArray<ContentInfo>& aElements) {
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RefPtr<Document> doc = mContent->GetComposedDoc();
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mColorContent = doc->CreateHTMLElement(nsGkAtoms::div);
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mColorContent->SetPseudoElementType(CSSPseudoElementType::mozColorSwatch);
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// Mark the element to be native anonymous before setting any attributes.
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mColorContent->SetIsNativeAnonymousRoot();
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nsresult rv = UpdateColor();
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NS_ENSURE_SUCCESS(rv, rv);
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if (!aElements.AppendElement(mColorContent)) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return NS_OK;
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}
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void nsColorControlFrame::AppendAnonymousContentTo(
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nsTArray<nsIContent*>& aElements, uint32_t aFilter) {
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if (mColorContent) {
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aElements.AppendElement(mColorContent);
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}
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}
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nsresult nsColorControlFrame::UpdateColor() {
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// Get the color from the "value" property of our content; it will return the
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// default color (through the sanitization algorithm) if the value is empty.
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nsAutoString color;
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HTMLInputElement* elt = HTMLInputElement::FromNode(mContent);
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elt->GetValue(color, CallerType::System);
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if (color.IsEmpty()) {
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// OK, there is one case the color string might be empty -- if our content
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// is still being created, i.e. if it has mDoneCreating==false. In that
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// case, we simply do nothing, because we'll be called again with a complete
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// content node before we ever reflow or paint. Specifically: we can expect
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// that HTMLInputElement::DoneCreatingElement() will set mDoneCreating to
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// true (which enables sanitization) and then it'll call SetValueInternal(),
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// which produces a nonempty color (via sanitization), and then it'll call
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// this function here, and we'll get the nonempty default color.
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MOZ_ASSERT(HasAnyStateBits(NS_FRAME_FIRST_REFLOW),
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"Content node's GetValue() should return a valid color string "
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"by the time we've been reflowed (the default color, in case "
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"no valid color is set)");
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return NS_OK;
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}
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// Set the background-color CSS property of the swatch element to this color.
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return mColorContent->SetAttr(kNameSpaceID_None, nsGkAtoms::style,
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NS_LITERAL_STRING("background-color:") + color,
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/* aNotify */ true);
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}
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nsresult nsColorControlFrame::AttributeChanged(int32_t aNameSpaceID,
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nsAtom* aAttribute,
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int32_t aModType) {
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NS_ASSERTION(mColorContent, "The color div must exist");
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// If the value attribute is set, update the color box, but only if we're
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// still a color control, which might not be the case if the type attribute
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// was removed/changed.
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nsCOMPtr<nsIFormControl> fctrl = do_QueryInterface(GetContent());
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if (fctrl->ControlType() == NS_FORM_INPUT_COLOR &&
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aNameSpaceID == kNameSpaceID_None && nsGkAtoms::value == aAttribute) {
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UpdateColor();
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}
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return nsHTMLButtonControlFrame::AttributeChanged(aNameSpaceID, aAttribute,
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aModType);
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}
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nsContainerFrame* nsColorControlFrame::GetContentInsertionFrame() {
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return this;
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}
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