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chore(code): replace tab if pressed while selected

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Elian Doran 2025-05-11 18:01:53 +03:00
parent 8d18823608
commit 44069b8ccb
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1 changed files with 28 additions and 7 deletions
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35
packages/codemirror/src/extensions/custom_tab.ts
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@ -2,20 +2,41 @@ import { indentLess, indentMore } from "@codemirror/commands";
import { EditorSelection, type ChangeSpec } from "@codemirror/state";
import type { KeyBinding } from "@codemirror/view";
/**
* Custom key binding for indentation:
*
* - <kbd>Tab</kbd> while at the beginning of a line will indent the line.
* - <kbd>Tab</kbd> while not at the beginning of a line will insert a tab character.
* - <kbd>Tab</kbd> while not at the beginning of a line while text is selected will replace the txt with a tab character.
* - <kbd>Shift</kbd>+<kbd>Tab</kbd> will always unindent.
*/
const smartIndentWithTab: KeyBinding[] = [
{
key: "Tab",
run({ state, dispatch }) {
const { selection } = state;
// Handle selection indenting normally
if (selection.ranges.some(range => !range.empty)) {
return indentMore({ state, dispatch });
}
const changes = [];
const newSelections = [];
// Step 1: Handle non-empty selections → replace with tab
if (selection.ranges.some(range => !range.empty)) {
for (let range of selection.ranges) {
changes.push({ from: range.from, to: range.to, insert: "\t" });
newSelections.push(EditorSelection.cursor(range.from + 1));
}
dispatch(
state.update({
changes,
selection: EditorSelection.create(newSelections),
scrollIntoView: true,
userEvent: "input"
})
);
return true;
}
// Step 2: Handle empty selections
for (let range of selection.ranges) {
const line = state.doc.lineAt(range.head);
const beforeCursor = state.doc.sliceString(line.from, range.head);
@ -24,7 +45,7 @@ const smartIndentWithTab: KeyBinding[] = [
// Only whitespace before cursor → indent line
return indentMore({ state, dispatch });
} else {
// Insert a tab character at cursor
// Insert tab character at cursor
changes.push({ from: range.head, to: range.head, insert: "\t" });
newSelections.push(EditorSelection.cursor(range.head + 1));
}