@jbrowse/plugin-linear-genome-view/esm/BaseLinearDisplay/models/TrackHeightMixin.js

JBrowse 2 linear genome view

import { getConf } from '@jbrowse/core/configuration';
import { types } from '@jbrowse/mobx-state-tree';
const minDisplayHeight = 20;
export default function TrackHeightMixin() {
    return types
        .model({
        heightPreConfig: types.maybe(types.refinement('displayHeight', types.number, n => n >= minDisplayHeight)),
    })
        .volatile(() => ({
        scrollTop: 0,
    }))
        .views(self => ({
        get height() {
            return self.heightPreConfig ?? getConf(self, 'height');
        },
    }))
        .actions(self => ({
        setScrollTop(scrollTop) {
            self.scrollTop = scrollTop;
        },
        setHeight(displayHeight) {
            self.heightPreConfig = Math.max(displayHeight, minDisplayHeight);
            return self.height;
        },
        resizeHeight(distance) {
            const oldHeight = self.height;
            const newHeight = this.setHeight(self.height + distance);
            return newHeight - oldHeight;
        },
    }));
}