flexlayout-react
Version:
A multi-tab docking layout manager
48 lines • 1.89 kB
JavaScript
import { TabSetNode } from "./TabSetNode";
import { BorderNode } from "./BorderNode";
/** @internal */
export function adjustSelectedIndexAfterDock(node) {
const parent = node.getParent();
if (parent !== null && (parent instanceof TabSetNode || parent instanceof BorderNode)) {
const children = parent.getChildren();
for (let i = 0; i < children.length; i++) {
const child = children[i];
if (child === node) {
parent.setSelected(i);
return;
}
}
}
}
/** @internal */
export function adjustSelectedIndex(parent, removedIndex) {
// for the tabset/border being removed from set the selected index
if (parent !== undefined && (parent instanceof TabSetNode || parent instanceof BorderNode)) {
const selectedIndex = parent.getSelected();
if (selectedIndex !== -1) {
if (removedIndex === selectedIndex && parent.getChildren().length > 0) {
if (removedIndex >= parent.getChildren().length) {
// removed last tab; select new last tab
parent.setSelected(parent.getChildren().length - 1);
}
else {
// leave selected index as is, selecting next tab after this one
}
}
else if (removedIndex < selectedIndex) {
parent.setSelected(selectedIndex - 1);
}
else if (removedIndex > selectedIndex) {
// leave selected index as is
}
else {
parent.setSelected(-1);
}
}
}
}
export function randomUUID() {
// @ts-ignore
return ([1e7] + -1e3 + -4e3 + -8e3 + -1e11).replace(/[018]/g, c => (c ^ crypto.getRandomValues(new Uint8Array(1))[0] & 15 >> c / 4).toString(16));
}
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