fix plugin panel scroll bar

[bbrabbitt]

Try to fix #779

Use LapceScroll to wrap the original Plugin component.

[bbrabbitt]

I've created a new commit to fix fmt and clippy warnings. Two commits are rebased for better git history.

[dzhou121]

You can simply wrap LapceScroll on Plugin itself I think.

[bbrabbitt]

You can simply wrap LapceScroll on Plugin itself I think.

Theoretically yes but I don't know how to do it elegantly. So I imitate what file explorer did, using a wrapper to add LapceScroll to the plugin list.

[dzhou121]

Something like this

impl Plugin {
    pub fn new() -> Self {
        Self { line_height: 25.0 }
    }

    pub fn new_panel(data: &LapceTabData) -> LapcePanel {
        let split_id = WidgetId::next();
        LapcePanel::new(
            PanelKind::Plugin,
            data.plugin.widget_id,
            split_id,
            vec![(
                split_id,
                PanelHeaderKind::None,
                LapceScroll::new(Self::new()).boxed(),
                None,
            )],
        )
    }
}

[bbrabbitt]

Thank you for your advice, I'll update the PR accordingly.

[dzhou121]

Thanks!