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feat: use shift+tab to unindent (#799)

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* feat: Use shift+tab to unindent, just like vscode

* fix: shit+tab return
This commit is contained in:
ChasLui 2022-12-20 23:03:25 +08:00 committed by GitHub
parent 3b41976866
commit 40f39fd66c
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 31 additions and 6 deletions
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37
web/src/components/MemoEditor.tsx
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@ -177,15 +177,40 @@ const MemoEditor = () => {
}
return;
}
if (!isShiftKey && event.key === "Tab") {
if (event.key === "Tab") {
event.preventDefault();
const selectedContent = editorRef.current.getSelectedContent();
const tabSpace = " ".repeat(TAB_SPACE_WIDTH);
const cursorPosition = editorRef.current.getCursorPosition();
editorRef.current.insertText(" ".repeat(TAB_SPACE_WIDTH));
if (selectedContent) {
editorRef.current.setCursorPosition(cursorPosition + TAB_SPACE_WIDTH);
const selectedContent = editorRef.current.getSelectedContent();
if (isShiftKey) {
const beforeContent = editorRef.current.getContent().slice(0, cursorPosition);
for (let i = beforeContent.length - 1; i >= 0; i--) {
if (beforeContent[i] !== "\n") {
continue;
}
const rowStart = i + 1;
const isTabSpace = beforeContent.substring(rowStart, i + TAB_SPACE_WIDTH + 1) === tabSpace;
const isSpace = beforeContent.substring(rowStart, i + 2) === " ";
if (!isTabSpace && !isSpace) {
break;
}
const removeLength = isTabSpace ? TAB_SPACE_WIDTH : 1;
editorRef.current.removeText(rowStart, removeLength);
const startPos = cursorPosition - removeLength;
let endPos = startPos;
if (selectedContent) {
endPos += selectedContent.length;
}
editorRef.current.setCursorPosition(startPos, endPos);
}
return;
} else {
editorRef.current.insertText(tabSpace);
if (selectedContent) {
editorRef.current.setCursorPosition(cursorPosition + TAB_SPACE_WIDTH);
}
return;
}
return;
}
for (const symbol of pairSymbols) {