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Diffstat (limited to 'editor/libeditor/TextEditor.h')
| -rw-r--r-- | editor/libeditor/TextEditor.h | 633 |
1 files changed, 633 insertions, 0 deletions
diff --git a/editor/libeditor/TextEditor.h b/editor/libeditor/TextEditor.h new file mode 100644 index 0000000000..d6836020f1 --- /dev/null +++ b/editor/libeditor/TextEditor.h @@ -0,0 +1,633 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* 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 mozilla_TextEditor_h +#define mozilla_TextEditor_h + +#include "mozilla/EditorBase.h" +#include "mozilla/EditorForwards.h" +#include "mozilla/TextControlState.h" +#include "mozilla/UniquePtr.h" + +#include "nsCOMPtr.h" +#include "nsCycleCollectionParticipant.h" +#include "nsINamed.h" +#include "nsISupportsImpl.h" +#include "nsITimer.h" +#include "nscore.h" + +class nsIContent; +class nsIDocumentEncoder; +class nsIOutputStream; +class nsIPrincipal; +class nsISelectionController; +class nsITransferable; + +namespace mozilla { +namespace dom { +class Selection; +} // namespace dom + +/** + * The text editor implementation. + * Use to edit text document represented as a DOM tree. + */ +class TextEditor final : public EditorBase, + public nsITimerCallback, + public nsINamed { + public: + /**************************************************************************** + * NOTE: DO NOT MAKE YOUR NEW METHODS PUBLIC IF they are called by other + * classes under libeditor except EditorEventListener and + * HTMLEditorEventListener because each public method which may fire + * eEditorInput event will need to instantiate new stack class for + * managing input type value of eEditorInput and cache some objects + * for smarter handling. In other words, when you add new root + * method to edit the DOM tree, you can make your new method public. + ****************************************************************************/ + + NS_DECL_ISUPPORTS_INHERITED + NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(TextEditor, EditorBase) + + TextEditor(); + + /** + * Note that TextEditor::Init() shouldn't cause running script synchronously. + * So, `MOZ_CAN_RUN_SCRIPT_BOUNDARY` is safe here. + * + * @param aDocument The document which aAnonymousDivElement belongs to. + * @param aAnonymousDivElement + * The root editable element for this editor. + * @param aSelectionController + * The selection controller for independent selections + * in the `<input>` or `<textarea>` element. + * @param aFlags Some of nsIEditor::eEditor*Mask flags. + * @param aPasswordMaskData + * Set to an instance only when aFlags includes + * `nsIEditor::eEditorPasswordMask`. Otherwise, must be + * `nullptr`. + */ + MOZ_CAN_RUN_SCRIPT_BOUNDARY nsresult + Init(Document& aDocument, Element& aAnonymousDivElement, + nsISelectionController& aSelectionController, uint32_t aFlags, + UniquePtr<PasswordMaskData>&& aPasswordMaskData); + + /** + * PostCreate() should be called after Init, and is the time that the editor + * tells its documentStateObservers that the document has been created. + * Note that TextEditor::PostCreate() shouldn't cause running script + * synchronously. So, `MOZ_CAN_RUN_SCRIPT_BOUNDARY` is safe here. + */ + MOZ_CAN_RUN_SCRIPT_BOUNDARY nsresult PostCreate(); + + /** + * This method re-initializes the selection and caret state that are for + * current editor state. When editor session is destroyed, it always reset + * selection state even if this has no focus. So if destroying editor, + * we have to call this method for focused editor to set selection state. + */ + MOZ_CAN_RUN_SCRIPT void ReinitializeSelection(Element& aElement); + + /** + * PreDestroy() is called before the editor goes away, and gives the editor a + * chance to tell its documentStateObservers that the document is going away. + * Note that TextEditor::PreDestroy() shouldn't cause running script + * synchronously. So, `MOZ_CAN_RUN_SCRIPT_BOUNDARY` is safe here. + */ + [[nodiscard]] MOZ_CAN_RUN_SCRIPT_BOUNDARY UniquePtr<PasswordMaskData> + PreDestroy(); + + static TextEditor* GetFrom(nsIEditor* aEditor) { + return aEditor ? aEditor->GetAsTextEditor() : nullptr; + } + static const TextEditor* GetFrom(const nsIEditor* aEditor) { + return aEditor ? aEditor->GetAsTextEditor() : nullptr; + } + + /** + * Helper method for `AppendString()` and `AppendSubString()`. This should + * be called only when `aText` is in a password field. This method masks + * A part of or all of `aText` (`aStartOffsetInText` and later) should've + * been copied (appended) to `aString`. `aStartOffsetInString` is where + * the password was appended into `aString`. + */ + static void MaskString(nsString& aString, const dom::Text& aTextNode, + uint32_t aStartOffsetInString, + uint32_t aStartOffsetInText); + + NS_DECL_NSITIMERCALLBACK + NS_DECL_NSINAMED + + // Overrides of nsIEditor + MOZ_CAN_RUN_SCRIPT NS_IMETHOD EndOfDocument() final; + MOZ_CAN_RUN_SCRIPT NS_IMETHOD InsertLineBreak() final; + NS_IMETHOD GetTextLength(uint32_t* aCount) final; + + // Shouldn't be used internally, but we need these using declarations for + // avoiding warnings of clang. + using EditorBase::CanCopy; + using EditorBase::CanCut; + using EditorBase::CanPaste; + + // Overrides of EditorBase + bool IsEmpty() const final; + + bool CanPaste(int32_t aClipboardType) const final; + + bool CanPasteTransferable(nsITransferable* aTransferable) final; + + MOZ_CAN_RUN_SCRIPT nsresult + HandleKeyPressEvent(WidgetKeyboardEvent* aKeyboardEvent) final; + + dom::EventTarget* GetDOMEventTarget() const final; + + MOZ_CAN_RUN_SCRIPT nsresult + OnFocus(const nsINode& aOriginalEventTargetNode) final; + + nsresult OnBlur(const dom::EventTarget* aEventTarget) final; + + /** + * The maximum number of characters allowed. + * default: -1 (unlimited). + */ + int32_t MaxTextLength() const { return mMaxTextLength; } + void SetMaxTextLength(int32_t aLength) { mMaxTextLength = aLength; } + + /** + * This updates the wrap width used for initializing a document encoder within + * a call of EditorBase::GetAndInitDocEncoder(). + */ + void SetWrapColumn(int32_t aWrapColumn) { mWrapColumn = aWrapColumn; } + + /** + * Replace existed string with a string. + * This is fast path to replace all string when using single line control. + * + * @param aString The string to be set + * @param aAllowBeforeInputEventCancelable + * Whether `beforeinput` event which will be + * dispatched for this can be cancelable or not. + * @param aPrincipal Set subject principal if it may be called by + * JS. If set to nullptr, will be treated as + * called by system. + */ + MOZ_CAN_RUN_SCRIPT nsresult SetTextAsAction( + const nsAString& aString, + AllowBeforeInputEventCancelable aAllowBeforeInputEventCancelable, + nsIPrincipal* aPrincipal = nullptr); + + MOZ_CAN_RUN_SCRIPT nsresult + InsertLineBreakAsAction(nsIPrincipal* aPrincipal = nullptr) final; + + /** + * ComputeTextValue() computes plaintext value of this editor. This may be + * too expensive if it's in hot path. + * + * @param aDocumentEncoderFlags Flags of nsIDocumentEncoder. + * @param aCharset Encoding of the document. + */ + nsresult ComputeTextValue(uint32_t aDocumentEncoderFlags, + nsAString& aOutputString) const { + AutoEditActionDataSetter editActionData(*this, EditAction::eNotEditing); + if (NS_WARN_IF(!editActionData.CanHandle())) { + return NS_ERROR_NOT_INITIALIZED; + } + nsresult rv = ComputeValueInternal(u"text/plain"_ns, aDocumentEncoderFlags, + aOutputString); + if (NS_WARN_IF(NS_FAILED(rv))) { + return EditorBase::ToGenericNSResult(rv); + } + return NS_OK; + } + + /** + * The following methods are available only when the instance is a password + * editor. They return whether there is unmasked range or not and range + * start and length. + */ + MOZ_ALWAYS_INLINE bool IsAllMasked() const { + MOZ_ASSERT(IsPasswordEditor()); + return !mPasswordMaskData || mPasswordMaskData->IsAllMasked(); + } + MOZ_ALWAYS_INLINE uint32_t UnmaskedStart() const { + MOZ_ASSERT(IsPasswordEditor()); + return mPasswordMaskData ? mPasswordMaskData->mUnmaskedStart : UINT32_MAX; + } + MOZ_ALWAYS_INLINE uint32_t UnmaskedLength() const { + MOZ_ASSERT(IsPasswordEditor()); + return mPasswordMaskData ? mPasswordMaskData->mUnmaskedLength : 0; + } + MOZ_ALWAYS_INLINE uint32_t UnmaskedEnd() const { + MOZ_ASSERT(IsPasswordEditor()); + return mPasswordMaskData ? mPasswordMaskData->UnmaskedEnd() : UINT32_MAX; + } + + /** + * IsMaskingPassword() returns false when the last caller of `Unmask()` + * didn't want to mask again automatically. When this returns true, user + * input causes masking the password even before timed-out. + */ + bool IsMaskingPassword() const { + MOZ_ASSERT(IsPasswordEditor()); + return mPasswordMaskData && mPasswordMaskData->mIsMaskingPassword; + } + + /** + * PasswordMask() returns a character which masks each character in password + * fields. + */ + static char16_t PasswordMask(); + + /** + * If you want to prevent to echo password temporarily, use the following + * methods. + */ + bool EchoingPasswordPrevented() const { + return mPasswordMaskData && mPasswordMaskData->mEchoingPasswordPrevented; + } + void PreventToEchoPassword() { + if (mPasswordMaskData) { + mPasswordMaskData->mEchoingPasswordPrevented = true; + } + } + void AllowToEchoPassword() { + if (mPasswordMaskData) { + mPasswordMaskData->mEchoingPasswordPrevented = false; + } + } + + dom::Text* GetTextNode() { + MOZ_DIAGNOSTIC_ASSERT(GetRoot()); + MOZ_DIAGNOSTIC_ASSERT(GetRoot()->GetFirstChild()); + MOZ_DIAGNOSTIC_ASSERT(GetRoot()->GetFirstChild()->IsText()); + if (MOZ_UNLIKELY(!GetRoot() || !GetRoot()->GetFirstChild())) { + return nullptr; + } + return GetRoot()->GetFirstChild()->GetAsText(); + } + const dom::Text* GetTextNode() const { + return const_cast<TextEditor*>(this)->GetTextNode(); + } + + protected: // May be called by friends. + /**************************************************************************** + * Some friend classes are allowed to call the following protected methods. + * However, those methods won't prepare caches of some objects which are + * necessary for them. So, if you call them from friend classes, you need + * to make sure that AutoEditActionDataSetter is created. + ****************************************************************************/ + + // Overrides of EditorBase + MOZ_CAN_RUN_SCRIPT nsresult RemoveAttributeOrEquivalent( + Element* aElement, nsAtom* aAttribute, bool aSuppressTransaction) final; + MOZ_CAN_RUN_SCRIPT nsresult SetAttributeOrEquivalent( + Element* aElement, nsAtom* aAttribute, const nsAString& aValue, + bool aSuppressTransaction) final; + using EditorBase::RemoveAttributeOrEquivalent; + using EditorBase::SetAttributeOrEquivalent; + + /** + * FindBetterInsertionPoint() tries to look for better insertion point which + * is typically the nearest text node and offset in it. + * + * @param aPoint Insertion point which the callers found. + * @return Better insertion point if there is. If not returns + * same point as aPoint. + */ + template <typename EditorDOMPointType> + EditorDOMPointType FindBetterInsertionPoint( + const EditorDOMPointType& aPoint) const; + + /** + * InsertLineBreakAsSubAction() inserts a line break. + */ + [[nodiscard]] MOZ_CAN_RUN_SCRIPT nsresult InsertLineBreakAsSubAction(); + + /** + * Replace existed string with aString. Caller must guarantee that there + * is a placeholder transaction which will have the transaction. + * + * @ param aString The string to be set. + */ + [[nodiscard]] MOZ_CAN_RUN_SCRIPT nsresult + SetTextAsSubAction(const nsAString& aString); + + /** + * MaybeDoAutoPasswordMasking() may mask password if we're doing auto-masking. + */ + void MaybeDoAutoPasswordMasking() { + if (IsPasswordEditor() && IsMaskingPassword()) { + MaskAllCharacters(); + } + } + + /** + * SetUnmaskRange() is available only when the instance is a password + * editor. This just updates unmask range. I.e., caller needs to + * guarantee to update the layout. + * + * @param aStart First index to show the character. + * If aLength is 0, this value is ignored. + * @param aLength Optional, Length to show characters. + * If UINT32_MAX, it means unmasking all characters after + * aStart. + * If 0, it means that masking all characters. + * @param aTimeout Optional, specify milliseconds to hide the unmasked + * characters after this call. + * If 0, it means this won't mask the characters + * automatically. + * If aLength is 0, this value is ignored. + */ + MOZ_CAN_RUN_SCRIPT_BOUNDARY nsresult SetUnmaskRange( + uint32_t aStart, uint32_t aLength = UINT32_MAX, uint32_t aTimeout = 0) { + return SetUnmaskRangeInternal(aStart, aLength, aTimeout, false, false); + } + + /** + * SetUnmaskRangeAndNotify() is available only when the instance is a + * password editor. This updates unmask range and notifying the text frame + * to update the visible characters. + * + * @param aStart First index to show the character. + * If UINT32_MAX, it means masking all. + * @param aLength Optional, Length to show characters. + * If UINT32_MAX, it means unmasking all characters after + * aStart. + * @param aTimeout Optional, specify milliseconds to hide the unmasked + * characters after this call. + * If 0, it means this won't mask the characters + * automatically. + * If aLength is 0, this value is ignored. + */ + MOZ_CAN_RUN_SCRIPT nsresult SetUnmaskRangeAndNotify( + uint32_t aStart, uint32_t aLength = UINT32_MAX, uint32_t aTimeout = 0) { + return SetUnmaskRangeInternal(aStart, aLength, aTimeout, true, false); + } + + /** + * MaskAllCharacters() is an alias of SetUnmaskRange() to mask all characters. + * In other words, this removes existing unmask range. + * After this is called, TextEditor starts masking password automatically. + */ + MOZ_CAN_RUN_SCRIPT_BOUNDARY nsresult MaskAllCharacters() { + if (!mPasswordMaskData) { + return NS_OK; // Already we don't have masked range data. + } + return SetUnmaskRangeInternal(UINT32_MAX, 0, 0, false, true); + } + + /** + * MaskAllCharactersAndNotify() is an alias of SetUnmaskRangeAndNotify() to + * mask all characters and notifies the text frame. In other words, this + * removes existing unmask range. + * After this is called, TextEditor starts masking password automatically. + */ + MOZ_CAN_RUN_SCRIPT nsresult MaskAllCharactersAndNotify() { + return SetUnmaskRangeInternal(UINT32_MAX, 0, 0, true, true); + } + + /** + * WillDeleteText() is called before `DeleteTextTransaction` or something + * removes text in a text node. Note that this won't be called if the + * instance is `HTMLEditor` since supporting it makes the code complicated + * due to mutation events. + * + * @param aCurrentLength Current text length of the node. + * @param aRemoveStartOffset Start offset of the range to be removed. + * @param aRemoveLength Length of the range to be removed. + */ + void WillDeleteText(uint32_t aCurrentLength, uint32_t aRemoveStartOffset, + uint32_t aRemoveLength); + + /** + * DidInsertText() is called after `InsertTextTransaction` or something + * inserts text into a text node. Note that this won't be called if the + * instance is `HTMLEditor` since supporting it makes the code complicated + * due to mutatione events. + * + * @param aNewLength New text length after the insertion. + * @param aInsertedOffset Start offset of the inserted text. + * @param aInsertedLength Length of the inserted text. + * @return NS_OK or NS_ERROR_EDITOR_DESTROYED. + */ + [[nodiscard]] MOZ_CAN_RUN_SCRIPT nsresult DidInsertText( + uint32_t aNewLength, uint32_t aInsertedOffset, uint32_t aInsertedLength); + + protected: // edit sub-action handler + /** + * MaybeTruncateInsertionStringForMaxLength() truncates aInsertionString to + * `maxlength` if it was not pasted in by the user. + * + * @param aInsertionString [in/out] New insertion string. This is + * truncated to `maxlength` if it was not pasted in + * by the user. + * @return If aInsertionString is truncated, it returns "as + * handled", else "as ignored." + */ + Result<EditActionResult, nsresult> MaybeTruncateInsertionStringForMaxLength( + nsAString& aInsertionString); + + /** + * InsertLineFeedCharacterAtSelection() inserts a linefeed character at + * selection. + */ + [[nodiscard]] MOZ_CAN_RUN_SCRIPT Result<EditActionResult, nsresult> + InsertLineFeedCharacterAtSelection(); + + /** + * Handles the newline characters according to the default system prefs + * (editor.singleLine.pasteNewlines). + * Each value means: + * nsIEditor::eNewlinesReplaceWithSpaces (2, Firefox default): + * replace newlines with spaces. + * nsIEditor::eNewlinesStrip (3): + * remove newlines from the string. + * nsIEditor::eNewlinesReplaceWithCommas (4, Thunderbird default): + * replace newlines with commas. + * nsIEditor::eNewlinesStripSurroundingWhitespace (5): + * collapse newlines and surrounding white-space characters and + * remove them from the string. + * nsIEditor::eNewlinesPasteIntact (0): + * only remove the leading and trailing newlines. + * nsIEditor::eNewlinesPasteToFirst (1) or any other value: + * remove the first newline and all characters following it. + * + * @param aString the string to be modified in place. + */ + void HandleNewLinesInStringForSingleLineEditor(nsString& aString) const; + + [[nodiscard]] MOZ_CAN_RUN_SCRIPT Result<EditActionResult, nsresult> + HandleInsertText(EditSubAction aEditSubAction, + const nsAString& aInsertionString, + SelectionHandling aSelectionHandling) final; + + [[nodiscard]] MOZ_CAN_RUN_SCRIPT nsresult InsertDroppedDataTransferAsAction( + AutoEditActionDataSetter& aEditActionData, + dom::DataTransfer& aDataTransfer, const EditorDOMPoint& aDroppedAt, + nsIPrincipal* aSourcePrincipal) final; + + /** + * HandleDeleteSelectionInternal() is a helper method of + * HandleDeleteSelection(). Must be called only when the instance is + * TextEditor. + * NOTE: This method creates SelectionBatcher. Therefore, each caller + * needs to check if the editor is still available even if this returns + * NS_OK. + */ + [[nodiscard]] MOZ_CAN_RUN_SCRIPT Result<EditActionResult, nsresult> + HandleDeleteSelectionInternal(nsIEditor::EDirection aDirectionAndAmount, + nsIEditor::EStripWrappers aStripWrappers); + + /** + * This method handles "delete selection" commands. + * + * @param aDirectionAndAmount Direction of the deletion. + * @param aStripWrappers Must be nsIEditor::eNoStrip. + */ + [[nodiscard]] MOZ_CAN_RUN_SCRIPT Result<EditActionResult, nsresult> + HandleDeleteSelection(nsIEditor::EDirection aDirectionAndAmount, + nsIEditor::EStripWrappers aStripWrappers) final; + + /** + * ComputeValueFromTextNodeAndBRElement() tries to compute "value" of + * this editor content only with text nodes and `<br>` elements. + * If this succeeds to compute the value, it's returned with aValue and + * the result is marked as "handled". Otherwise, the caller needs to + * compute it with another way. + */ + Result<EditActionResult, nsresult> ComputeValueFromTextNodeAndBRElement( + nsAString& aValue) const; + + /** + * SetTextWithoutTransaction() is optimized method to set `<input>.value` + * and `<textarea>.value` to aValue without transaction. This must be + * called only when it's not `HTMLEditor` and undo/redo is disabled. + */ + [[nodiscard]] MOZ_CAN_RUN_SCRIPT Result<EditActionResult, nsresult> + SetTextWithoutTransaction(const nsAString& aValue); + + /** + * EnsureCaretNotAtEndOfTextNode() collapses selection at the padding `<br>` + * element (i.e., container becomes the anonymous `<div>` element) if + * `Selection` is at end of the text node. + */ + [[nodiscard]] MOZ_CAN_RUN_SCRIPT nsresult EnsureCaretNotAtEndOfTextNode(); + + protected: // Called by helper classes. + MOZ_CAN_RUN_SCRIPT void OnStartToHandleTopLevelEditSubAction( + EditSubAction aTopLevelEditSubAction, + nsIEditor::EDirection aDirectionOfTopLevelEditSubAction, + ErrorResult& aRv) final; + MOZ_CAN_RUN_SCRIPT nsresult OnEndHandlingTopLevelEditSubAction() final; + + /** + * HandleInlineSpellCheckAfterEdit() does spell-check after handling top level + * edit subaction. + */ + nsresult HandleInlineSpellCheckAfterEdit() { + MOZ_ASSERT(IsEditActionDataAvailable()); + if (!GetSpellCheckRestartPoint().IsSet()) { + return NS_OK; // Maybe being initialized. + } + nsresult rv = HandleInlineSpellCheck(GetSpellCheckRestartPoint()); + NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Failed to spellcheck"); + ClearSpellCheckRestartPoint(); + return rv; + } + + protected: // Shouldn't be used by friend classes + virtual ~TextEditor(); + + /** + * CanEchoPasswordNow() returns true if currently we can echo password. + * If it's direct user input such as pasting or dropping text, this + * returns false even if we may echo password. + */ + bool CanEchoPasswordNow() const; + + /** + * InitEditorContentAndSelection() may insert a padding `<br>` element for + * if it's required in the anonymous `<div>` element or `<body>` element and + * collapse selection at the end if there is no selection ranges. + */ + [[nodiscard]] MOZ_CAN_RUN_SCRIPT nsresult InitEditorContentAndSelection(); + + /** + * Collapse `Selection` to end of the text node in the anonymous <div> + * element. + */ + [[nodiscard]] MOZ_CAN_RUN_SCRIPT nsresult CollapseSelectionToEndOfTextNode(); + + /** + * Make the given selection span the entire document. + */ + MOZ_CAN_RUN_SCRIPT nsresult SelectEntireDocument() final; + + [[nodiscard]] MOZ_CAN_RUN_SCRIPT nsresult HandlePaste( + AutoEditActionDataSetter& aEditActionData, int32_t aClipboardType) final; + [[nodiscard]] MOZ_CAN_RUN_SCRIPT nsresult HandlePasteAsQuotation( + AutoEditActionDataSetter& aEditActionData, int32_t aClipboardType) final; + [[nodiscard]] MOZ_CAN_RUN_SCRIPT nsresult + HandlePasteTransferable(AutoEditActionDataSetter& aEditActionData, + nsITransferable& aTransferable) final; + + [[nodiscard]] MOZ_CAN_RUN_SCRIPT nsresult + InsertWithQuotationsAsSubAction(const nsAString& aQuotedText) final; + + [[nodiscard]] MOZ_CAN_RUN_SCRIPT nsresult + InsertTextFromTransferable(nsITransferable* transferable); + + bool IsCopyToClipboardAllowedInternal() const final; + + already_AddRefed<Element> GetInputEventTargetElement() const final; + + /** + * See SetUnmaskRange() and SetUnmaskRangeAndNotify() for the detail. + * + * @param aForceStartMasking If true, forcibly starts masking. This should + * be used only when `nsIEditor::Mask()` is called. + */ + MOZ_CAN_RUN_SCRIPT nsresult SetUnmaskRangeInternal(uint32_t aStart, + uint32_t aLength, + uint32_t aTimeout, + bool aNotify, + bool aForceStartMasking); + + MOZ_ALWAYS_INLINE bool HasAutoMaskingTimer() const { + return mPasswordMaskData && mPasswordMaskData->mTimer; + } + + protected: + UniquePtr<PasswordMaskData> mPasswordMaskData; + + int32_t mMaxTextLength = -1; + + friend class AutoRangeArray; // FindBetterInsertionPoint + friend class DeleteNodeTransaction; + friend class EditorBase; + friend class InsertNodeTransaction; +}; + +} // namespace mozilla + +mozilla::TextEditor* nsIEditor::AsTextEditor() { + MOZ_DIAGNOSTIC_ASSERT(IsTextEditor()); + return static_cast<mozilla::TextEditor*>(this); +} + +const mozilla::TextEditor* nsIEditor::AsTextEditor() const { + MOZ_DIAGNOSTIC_ASSERT(IsTextEditor()); + return static_cast<const mozilla::TextEditor*>(this); +} + +mozilla::TextEditor* nsIEditor::GetAsTextEditor() { + return AsEditorBase()->IsTextEditor() ? AsTextEditor() : nullptr; +} + +const mozilla::TextEditor* nsIEditor::GetAsTextEditor() const { + return AsEditorBase()->IsTextEditor() ? AsTextEditor() : nullptr; +} + +#endif // #ifndef mozilla_TextEditor_h |