зеркало из https://github.com/mozilla/gecko-dev.git
104 строки
3.5 KiB
C++
104 строки
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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#ifndef CompositionTransaction_h
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#define CompositionTransaction_h
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#include "mozilla/EditTransactionBase.h" // base class
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#include "mozilla/EditorDOMPoint.h" // EditorDOMPointInText
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#include "mozilla/WeakPtr.h"
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#include "nsCycleCollectionParticipant.h" // various macros
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#include "nsString.h" // mStringToInsert
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namespace mozilla {
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class EditorBase;
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class TextComposition;
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class TextRangeArray;
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namespace dom {
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class Text;
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} // namespace dom
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/**
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* CompositionTransaction stores all edit for a composition, i.e.,
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* from compositionstart event to compositionend event. E.g., inserting a
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* composition string, modifying the composition string or its IME selection
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* ranges and commit or cancel the composition.
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*/
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class CompositionTransaction final : public EditTransactionBase,
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public SupportsWeakPtr {
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protected:
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CompositionTransaction(EditorBase& aEditorBase,
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const nsAString& aStringToInsert,
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const EditorDOMPointInText& aPointToInsert);
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public:
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/**
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* Creates a composition transaction. aEditorBase must not return from
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* GetComposition() while calling this method. Note that this method will
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* update text node information of aEditorBase.mComposition.
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*
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* @param aEditorBase The editor which has composition.
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* @param aStringToInsert The new composition string to insert. This may
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* be different from actual composition string.
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* E.g., password editor can hide the character
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* with a different character.
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* @param aPointToInsert The insertion point.
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*/
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static already_AddRefed<CompositionTransaction> Create(
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EditorBase& aEditorBase, const nsAString& aStringToInsert,
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const EditorDOMPointInText& aPointToInsert);
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(CompositionTransaction,
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EditTransactionBase)
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_EDITTRANSACTIONBASE
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NS_DECL_EDITTRANSACTIONBASE_GETASMETHODS_OVERRIDE(CompositionTransaction)
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MOZ_CAN_RUN_SCRIPT NS_IMETHOD RedoTransaction() override;
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NS_IMETHOD Merge(nsITransaction* aOtherTransaction, bool* aDidMerge) override;
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void MarkFixed();
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MOZ_CAN_RUN_SCRIPT static nsresult SetIMESelection(
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EditorBase& aEditorBase, dom::Text* aTextNode, uint32_t aOffsetInNode,
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uint32_t aLengthOfCompositionString, const TextRangeArray* aRanges);
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friend std::ostream& operator<<(std::ostream& aStream,
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const CompositionTransaction& aTransaction);
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private:
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virtual ~CompositionTransaction() = default;
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MOZ_CAN_RUN_SCRIPT nsresult SetSelectionForRanges();
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// The text element to operate upon.
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RefPtr<dom::Text> mTextNode;
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// The offsets into mTextNode where the insertion should be placed.
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uint32_t mOffset;
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uint32_t mReplaceLength;
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// The range list.
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RefPtr<TextRangeArray> mRanges;
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// The text to insert into mTextNode at mOffset.
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nsString mStringToInsert;
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// The editor, which is used to get the selection controller.
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RefPtr<EditorBase> mEditorBase;
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bool mFixed;
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};
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} // namespace mozilla
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#endif // #ifndef CompositionTransaction_h
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