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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/. */
#ifndef nsTextControlFrame_h___
#define nsTextControlFrame_h___
#include "mozilla/Attributes.h"
#include "mozilla/TextControlElement.h"
#include "nsContainerFrame.h"
#include "nsIAnonymousContentCreator.h"
#include "nsIContent.h"
#include "nsITextControlFrame.h"
#include "nsIStatefulFrame.h"
class nsISelectionController;
class EditorInitializerEntryTracker;
namespace mozilla {
class AutoTextControlHandlingState;
class TextEditor;
class TextControlState;
enum class PseudoStyleType : uint8_t;
namespace dom {
class Element;
} // namespace dom
} // namespace mozilla
class nsTextControlFrame : public nsContainerFrame,
public nsIAnonymousContentCreator,
public nsITextControlFrame,
public nsIStatefulFrame {
using Element = mozilla::dom::Element;
public:
NS_DECL_FRAMEARENA_HELPERS(nsTextControlFrame)
NS_DECLARE_FRAME_PROPERTY_DELETABLE(ContentScrollPos, nsPoint)
protected:
nsTextControlFrame(ComputedStyle*, nsPresContext*, nsIFrame::ClassID);
public:
explicit nsTextControlFrame(ComputedStyle* aStyle,
nsPresContext* aPresContext)
: nsTextControlFrame(aStyle, aPresContext, kClassID) {}
virtual ~nsTextControlFrame();
/**
* DestroyFrom() causes preparing to destroy editor and that may cause
* running selection listeners of specllchecker selection and document
* state listeners. Not sure whether the former does something or not,
* but nobody should run content script. The latter is currently only
* FinderHighlighter to clean up its fields at destruction. Thus, the
* latter won't run content script too. Therefore, this won't run
* unsafe script.
*/
MOZ_CAN_RUN_SCRIPT_BOUNDARY void DestroyFrom(nsIFrame* aDestructRoot,
PostDestroyData&) override;
nsIScrollableFrame* GetScrollTargetFrame() const override;
nscoord GetMinISize(gfxContext* aRenderingContext) override;
nscoord GetPrefISize(gfxContext* aRenderingContext) override;
mozilla::LogicalSize ComputeAutoSize(
gfxContext* aRenderingContext, mozilla::WritingMode aWM,
const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
const mozilla::LogicalSize& aMargin,
const mozilla::LogicalSize& aBorderPadding,
const mozilla::StyleSizeOverrides& aSizeOverrides,
mozilla::ComputeSizeFlags aFlags) override;
void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) override;
bool GetVerticalAlignBaseline(mozilla::WritingMode aWM,
nscoord* aBaseline) const override {
return GetNaturalBaselineBOffset(aWM, BaselineSharingGroup::First,
aBaseline);
}
bool GetNaturalBaselineBOffset(mozilla::WritingMode aWM,
BaselineSharingGroup aBaselineGroup,
nscoord* aBaseline) const override {
if (!IsSingleLineTextControl()) {
return false;
}
return GetSingleLineTextControlBaseline(this, mFirstBaseline, aWM,
aBaselineGroup, aBaseline);
}
static bool GetSingleLineTextControlBaseline(
const nsIFrame* aFrame, nscoord aFirstBaseline, mozilla::WritingMode aWM,
BaselineSharingGroup aBaselineGroup, nscoord* aBaseline) {
if (aFrame->StyleDisplay()->IsContainLayout()) {
return false;
}
NS_ASSERTION(aFirstBaseline != NS_INTRINSIC_ISIZE_UNKNOWN,
"please call Reflow before asking for the baseline");
*aBaseline = aBaselineGroup == BaselineSharingGroup::First
? aFirstBaseline
: aFrame->BSize(aWM) - aFirstBaseline;
return true;
}
nsSize GetXULMinSize(nsBoxLayoutState&) override;
bool IsXULCollapsed() override;
#ifdef ACCESSIBILITY
mozilla::a11y::AccType AccessibleType() override;
#endif
#ifdef DEBUG_FRAME_DUMP
nsresult GetFrameName(nsAString& aResult) const override {
aResult.AssignLiteral("nsTextControlFrame");
return NS_OK;
}
#endif
bool IsFrameOfType(uint32_t aFlags) const override {
return nsContainerFrame::IsFrameOfType(
aFlags & ~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
}
#ifdef DEBUG
void MarkIntrinsicISizesDirty() override {
// Need another Reflow to have a correct baseline value again.
mFirstBaseline = NS_INTRINSIC_ISIZE_UNKNOWN;
}
#endif
// nsIAnonymousContentCreator
nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) override;
void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
uint32_t aFilter) override;
void SetInitialChildList(ChildListID, nsFrameList&) override;
void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) override;
//==== BEGIN NSIFORMCONTROLFRAME
MOZ_CAN_RUN_SCRIPT_BOUNDARY void SetFocus(bool aOn, bool aRepaint) override;
MOZ_CAN_RUN_SCRIPT_BOUNDARY nsresult
SetFormProperty(nsAtom* aName, const nsAString& aValue) override;
//==== END NSIFORMCONTROLFRAME
//==== NSITEXTCONTROLFRAME
MOZ_CAN_RUN_SCRIPT_BOUNDARY already_AddRefed<mozilla::TextEditor>
GetTextEditor() override;
MOZ_CAN_RUN_SCRIPT NS_IMETHOD
SetSelectionRange(uint32_t aSelectionStart, uint32_t aSelectionEnd,
SelectionDirection aDirection = eNone) override;
NS_IMETHOD GetOwnedSelectionController(
nsISelectionController** aSelCon) override;
nsFrameSelection* GetOwnedFrameSelection() override;
void PlaceholderChanged(const nsAttrValue* aOld, const nsAttrValue* aNew);
/**
* Ensure mEditor is initialized with the proper flags and the default value.
* @throws NS_ERROR_NOT_INITIALIZED if mEditor has not been created
* @throws various and sundry other things
*/
MOZ_CAN_RUN_SCRIPT_BOUNDARY nsresult EnsureEditorInitialized() override;
//==== END NSITEXTCONTROLFRAME
//==== NSISTATEFULFRAME
mozilla::UniquePtr<mozilla::PresState> SaveState() override;
NS_IMETHOD RestoreState(mozilla::PresState* aState) override;
//=== END NSISTATEFULFRAME
//==== OVERLOAD of nsIFrame
/** handler for attribute changes to mContent */
MOZ_CAN_RUN_SCRIPT_BOUNDARY nsresult AttributeChanged(
int32_t aNameSpaceID, nsAtom* aAttribute, int32_t aModType) override;
void GetText(nsString& aText);
/**
* TextEquals() is designed for internal use so that aValue shouldn't
* include \r character. It should be handled before calling this with
* nsContentUtils::PlatformToDOMLineBreaks().
*/
bool TextEquals(const nsAString& aText) const;
nsresult PeekOffset(nsPeekOffsetStruct* aPos) override;
NS_DECL_QUERYFRAME
// Whether we should scroll only the current selection into view in the inner
// scroller, or also ancestors as needed.
enum class ScrollAncestors { No, Yes };
void ScrollSelectionIntoViewAsync(ScrollAncestors = ScrollAncestors::No);
protected:
/**
* Launch the reflow on the child frames - see nsTextControlFrame::Reflow()
*/
void ReflowTextControlChild(nsIFrame* aFrame, nsPresContext* aPresContext,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus,
ReflowOutput& aParentDesiredSize,
nscoord& aButtonBoxISize);
public:
static Maybe<nscoord> ComputeBaseline(const nsIFrame*, const ReflowInput&,
bool aForSingleLineControl);
Element* GetRootNode() const { return mRootNode; }
Element* GetPreviewNode() const { return mPreviewDiv; }
Element* GetPlaceholderNode() const { return mPlaceholderDiv; }
// called by the focus listener
nsresult MaybeBeginSecureKeyboardInput();
void MaybeEndSecureKeyboardInput();
#define DEFINE_TEXTCTRL_CONST_FORWARDER(type, name) \
type name() const { \
mozilla::TextControlElement* textControlElement = \
mozilla::TextControlElement::FromNode(GetContent()); \
return textControlElement->name(); \
}
DEFINE_TEXTCTRL_CONST_FORWARDER(bool, IsSingleLineTextControl)
DEFINE_TEXTCTRL_CONST_FORWARDER(bool, IsTextArea)
DEFINE_TEXTCTRL_CONST_FORWARDER(bool, IsPasswordTextControl)
DEFINE_TEXTCTRL_CONST_FORWARDER(int32_t, GetCols)
DEFINE_TEXTCTRL_CONST_FORWARDER(int32_t, GetRows)
#undef DEFINE_TEXTCTRL_CONST_FORWARDER
protected:
class EditorInitializer;
friend class EditorInitializer;
friend class mozilla::AutoTextControlHandlingState; // needs access to
// CacheValue
friend class mozilla::TextControlState; // needs access to UpdateValueDisplay
// Temp reference to scriptrunner
NS_DECLARE_FRAME_PROPERTY_WITH_DTOR(TextControlInitializer, EditorInitializer,
nsTextControlFrame::RevokeInitializer)
static void RevokeInitializer(EditorInitializer* aInitializer) {
aInitializer->Revoke();
};
class EditorInitializer : public mozilla::Runnable {
public:
explicit EditorInitializer(nsTextControlFrame* aFrame)
: mozilla::Runnable("nsTextControlFrame::EditorInitializer"),
mFrame(aFrame) {}
NS_IMETHOD Run() override;
// avoids use of AutoWeakFrame
void Revoke() { mFrame = nullptr; }
private:
nsTextControlFrame* mFrame;
};
nsresult OffsetToDOMPoint(uint32_t aOffset, nsINode** aResult,
uint32_t* aPosition);
/**
* Update the textnode under our anonymous div to show the new
* value. This should only be called when we have no editor yet.
* @throws NS_ERROR_UNEXPECTED if the div has no text content
*/
nsresult UpdateValueDisplay(bool aNotify, bool aBeforeEditorInit = false,
const nsAString* aValue = nullptr);
/**
* Find out whether an attribute exists on the content or not.
* @param aAtt the attribute to determine the existence of
* @returns false if it does not exist
*/
bool AttributeExists(nsAtom* aAtt) const {
return mContent && mContent->AsElement()->HasAttr(kNameSpaceID_None, aAtt);
}
/**
* We call this when we are being destroyed or removed from the PFM.
* @param aPresContext the current pres context
*/
void PreDestroy();
// Compute our intrinsic size. This does not include any borders, paddings,
// etc. Just the size of our actual area for the text (and the scrollbars,
// for <textarea>).
mozilla::LogicalSize CalcIntrinsicSize(gfxContext* aRenderingContext,
mozilla::WritingMode aWM,
float aFontSizeInflation) const;
private:
// helper methods
MOZ_CAN_RUN_SCRIPT nsresult SetSelectionInternal(
nsINode* aStartNode, uint32_t aStartOffset, nsINode* aEndNode,
uint32_t aEndOffset, SelectionDirection aDirection = eNone);
MOZ_CAN_RUN_SCRIPT nsresult SelectAllOrCollapseToEndOfText(bool aSelect);
MOZ_CAN_RUN_SCRIPT nsresult
SetSelectionEndPoints(uint32_t aSelStart, uint32_t aSelEnd,
SelectionDirection aDirection = eNone);
void FinishedInitializer() { RemoveProperty(TextControlInitializer()); }
const nsAString& CachedValue() const { return mCachedValue; }
void ClearCachedValue() { mCachedValue.SetIsVoid(true); }
void CacheValue(const nsAString& aValue) { mCachedValue.Assign(aValue); }
[[nodiscard]] bool CacheValue(const nsAString& aValue,
const mozilla::fallible_t& aFallible) {
if (!mCachedValue.Assign(aValue, aFallible)) {
ClearCachedValue();
return false;
}
return true;
}
protected:
class nsAnonDivObserver;
nsresult CreateRootNode();
void CreatePlaceholderIfNeeded();
void UpdatePlaceholderText(nsString&, bool aNotify);
void CreatePreviewIfNeeded();
already_AddRefed<Element> MakeAnonElement(
mozilla::PseudoStyleType, Element* aParent = nullptr,
nsAtom* aTag = nsGkAtoms::div) const;
already_AddRefed<Element> MakeAnonDivWithTextNode(
mozilla::PseudoStyleType) const;
bool ShouldInitializeEagerly() const;
void InitializeEagerlyIfNeeded();
RefPtr<Element> mRootNode;
RefPtr<Element> mPlaceholderDiv;
RefPtr<Element> mPreviewDiv;
RefPtr<nsAnonDivObserver> mMutationObserver;
// Cache of the |.value| of <input> or <textarea> element without hard-wrap.
// If its IsVoid() returns true, it doesn't cache |.value|.
// Otherwise, it's cached when setting specific value or getting value from
// TextEditor. Additionally, when contents in the anonymous <div> element
// is modified, this is cleared.
//
// FIXME(bug 1402545): Consider using an nsAutoString here.
nsString mCachedValue;
// Our first baseline, or NS_INTRINSIC_ISIZE_UNKNOWN if we have a pending
// Reflow (or if we're contain:layout, which means we have no baseline).
nscoord mFirstBaseline;
// these packed bools could instead use the high order bits on mState, saving
// 4 bytes
bool mEditorHasBeenInitialized;
bool mIsProcessing;
#ifdef DEBUG
bool mInEditorInitialization;
friend class EditorInitializerEntryTracker;
#endif
};
#endif