slate-edit-list/dist/onTab.js

'use strict';

var decreaseItemDepth = require('./changes/decreaseItemDepth');
var increaseItemDepth = require('./changes/increaseItemDepth');
var getCurrentItem = require('./getCurrentItem');

/**
 * User pressed Tab in an editor.
 * Tab       -> Increase item depth if inside a list item
 * Shift+Tab -> Decrease item depth if inside a list item
 */
function onTab(event, change, editor, opts) {
    var value = change.value;
    var isCollapsed = value.isCollapsed;


    if (!isCollapsed || !getCurrentItem(opts, value)) {
        return;
    }

    // Shift+tab reduce depth
    if (event.shiftKey) {
        event.preventDefault();

        return decreaseItemDepth(opts, change);
    }

    // Tab increases depth
    event.preventDefault();

    return increaseItemDepth(opts, change);
}

module.exports = onTab;