Draftjs尝试删除原子块

Question

我正在尝试用Modifier.removeRange从draftjs编辑器中删除一个原子块。据我所知，我传入了所有正确的参数，但用于删除的SelectionState从未被删除。这是我的代码。这还添加了一个新的原子块。这部分运行得很好，它是删除方面，它返回与我传入的相同的contentState。

upload_block_selection_state是要删除的SelectionState对象。此对象在呈现时从editorState.getSelection()获得。它看起来像这样。

upload_block_selection_state = {
 anchorKey: "c1kpk",
 anchorOffset: 0,
 focusKey: "c1kpk",
 focusOffset: 0,
 isBackward: false
}

下面的函数既要删除上载块，又要添加一个新块。添加有效，删除不起任何作用。

function addAndRemoveMediaBlock(
    entityURL,
    entityType,
    editorState,
    setEditorState,
    upload_block_selection_state
){
    const contentBeforeAtomicBlock      = editorState.getCurrentContent();
    const contentAfterSelectionRemoval  = Modifier.removeRange(
        contentBeforeAtomicBlock,
        upload_block_selection_state,
        'forward'
    );


    const contentStateWithEntity        = contentAfterSelectionRemoval.createEntity(entityType, 'IMMUTABLE', { src: entityURL });
    const entityKey                     = contentStateWithEntity.getLastCreatedEntityKey();
    const editorStateAfterAtomicBlock   = AtomicBlockUtils.insertAtomicBlock(
        editorState,
        entityKey,
        entityKey
    );

    /* 
        below here relevant only to removing the empty block.  
        */    
    const selectionStateBeforeAtomicBlock = editorState.getSelection();
    const anchorKeyBeforeAtomicBlock      = selectionStateBeforeAtomicBlock.getAnchorKey();
    const contentAfterAtomicBlock         = editorStateAfterAtomicBlock.getCurrentContent();
    const blockSelectedBefore             = contentAfterAtomicBlock.getBlockForKey(anchorKeyBeforeAtomicBlock);

    const finalEditorState = (() => {
        if(blockSelectedBefore.getLength() === 0){
            const keyBefore                    = blockSelectedBefore.getKey();
            const newBlockMap                  = contentAfterAtomicBlock.blockMap.delete(keyBefore);
            const contentWithoutEmptyBlock     = contentAfterAtomicBlock.set('blockMap', newBlockMap);
            const editorStateWithoutEmptyBlock = EditorState.push(editorStateAfterAtomicBlock, contentWithoutEmptyBlock, 'remove-block');
            return EditorState.forceSelection(editorStateWithoutEmptyBlock, contentWithoutEmptyBlock.getSelectionAfter());
        }else{
            return editorStateAfterAtomicBlock;
        }
    })();
    setEditorState({
        editorState: finalEditorState,
    });
};

Answer 1

我想通了。

const contentAfterSelectionRemoval  = contentBeforeAtomicBlock.blockMap.delete(blockToRemoveKey);

这看起来像是一个不可变状态中的反模式，所以我最终从另一个角度来处理这个问题，实际上并没有使用这个有效的解决方案。

Answer 2

如果任何其他参数都可以，将focusOffset设置为1应该是可行的。