ProseMirror中如何替换当前选中的内容

How to replace currently selected content in ProseMirror

目前在 ProseMirror 中有点迷茫,并试图理解替换当前选择的文本的正确方法。我希望能够在 lower/upper 大小写之间切换大小写。

state.selection.content();会return选择下相关节点的切片,以及被选择的内容,但不会return每个节点内需要替换的范围.

我假设我需要创建一个新的文本节点来替换每个选定节点内的范围,例如:

const updatedText = node.textContent.toUpperCase();
const textNode = state.schema.text(updatedText);
transaction = transaction.replaceWith(startPos, startPos + node.nodeSize, textNode);

如何获取每个节点内要替换的范围?

很遗憾,我找不到合适的例子。

最终得到以下使用 replaceWith 的内容。

可能是更好的解决方案,但希望这对其他人有所帮助。

查看内联评论:

const execute = (casing, state, dispatch) => {
    // grab the current transaction and selection
    let tr = state.tr;
    const selection = tr.selection;

    // check we will actually need a to dispatch transaction
    let shouldUpdate = false;

    state.doc.nodesBetween(selection.from, selection.to, (node, position) => {
        // we only processing text, must be a selection
        if (!node.isTextblock || selection.from === selection.to) return;

        // calculate the section to replace
        const startPosition = Math.max(position + 1, selection.from);
        const endPosition = Math.min(position + node.nodeSize, selection.to);

        // grab the content
        const substringFrom = Math.max(0, selection.from - position - 1);
        const substringTo = Math.max(0, selection.to - position - 1);
        const updatedText = node.textContent.substring(substringFrom, substringTo);

        // set the casing
        const textNode = (casing === 'uppercase')
            ? state.schema.text(updatedText.toUpperCase(), node.marks)
            : state.schema.text(updatedText.toLocaleLowerCase(), node.marks);

        // replace
        tr = tr.replaceWith(startPosition, endPosition, textNode);
        shouldUpdate = true;
    });

    if (dispatch && shouldUpdate) {
        dispatch(tr.scrollIntoView());
    }
}