Add component SideMenu

[alexbudarov]

see forum topic
https://www.cuba-platform.com/discuss/t/masquerade-appmenu-openitem/10518

Solution

New component SideMenu is introduced.

The collapsible SideMenu supports the following conditions:

• Conditions#EXPANDED - checks that component is expanded;
• Conditions#COLLAPSED - checks that component is collapsed.

The SideMenu component has the following methods:

• openItem(Class<T> screenClass, String... path) - opens side menu item matching the given screenClass and path;

$c(SideMenu).openItem(UserBrowser, 'administration', 'sec$User.browse')

• openItem(Menu<T> menu) - opens side menu item matching the given Menu;

$c(SideMenu).openItem(new AppMenu.Menu<>(UserBrowser, 'administration', 'sec$User.browse'))

• openItem(String... path) - opens side menu item matching the given path;

$c(SideMenu).openItem('administration', 'sec$User.browse')

• expand() - expands side menu;
• collapse() - collapses side menu.

Usage example

public static final SideMenu.Menu<ReportBrowser> REPORT_BROWSE =
        new SideMenu.Menu<ReportBrowser>(ReportBrowser, 'reports', 'report$Report.browse')

@Test
void testCollapseSideMenu() {
    $c(SideMenu).openItem(REPORT_BROWSE)
            .collapse()
            .shouldBe(Conditions.COLLAPSED)
}

@Test
void testExpandSideMenu() {
    $c(SideMenu).openItem(REPORT_BROWSE)
            .expand()
            .shouldBe(Conditions.EXPANDED)
}