From 9a66e268e7f35a9952fae9085b68851944ab1a6c Mon Sep 17 00:00:00 2001 From: crisbeto Date: Sat, 24 Jun 2017 16:26:06 +0200 Subject: [PATCH] feat(menu): add nested menu functionality Adds the ability for an `md-menu-item` inside of a `md-menu` to trigger another `md-menu`. This is a first step towards a `md-toolbar` component. Fixes #1429. --- src/demo-app/menu/menu-demo.html | 56 +++- src/lib/menu/_menu-theme.scss | 7 +- src/lib/menu/menu-directive.ts | 43 +++- src/lib/menu/menu-item.ts | 24 +- src/lib/menu/menu-panel.ts | 4 +- src/lib/menu/menu-trigger.ts | 233 +++++++++++------ src/lib/menu/menu.html | 2 +- src/lib/menu/menu.md | 40 ++- src/lib/menu/menu.spec.ts | 427 ++++++++++++++++++++++++++++++- 9 files changed, 722 insertions(+), 114 deletions(-) diff --git a/src/demo-app/menu/menu-demo.html b/src/demo-app/menu/menu-demo.html index 61c0bfb79209..502050bf9ddf 100644 --- a/src/demo-app/menu/menu-demo.html +++ b/src/demo-app/menu/menu-demo.html @@ -15,7 +15,61 @@
-

Clicking these will navigate:

+

Nested menu

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+
+

Clicking these will navigate:

+``` + +### Nested menu + +Material supports the ability for a `md-menu-item` to open a sub-menu. To do so, you have to define +your root menu and sub-menus, in addition to setting the `[mdMenuTriggerFor]` on the `md-menu-item` +that should trigger the sub-menu: + +```html + + + + + + + + + + + + ``` @@ -71,4 +95,6 @@ The menu can be be forced to not overlap the trigger using `[overlapTrigger]="fa ### Keyboard interaction - DOWN_ARROW: Focuses the next menu item - UP_ARROW: Focuses previous menu item +- RIGHT_ARROW: Opens the menu item's sub-menu +- LEFT_ARROW: Closes the current menu, if it is a sub-menu. - ENTER: Activates the focused menu item diff --git a/src/lib/menu/menu.spec.ts b/src/lib/menu/menu.spec.ts index c029c56154bb..df35f7a01782 100644 --- a/src/lib/menu/menu.spec.ts +++ b/src/lib/menu/menu.spec.ts @@ -10,19 +10,25 @@ import { TemplateRef, ViewChild } from '@angular/core'; +import { + OverlayContainer, + Directionality, + Direction, + ESCAPE, + RIGHT_ARROW, + LEFT_ARROW, +} from '../core'; import { MdMenuModule, MdMenuTrigger, MdMenuPanel, MenuPositionX, MenuPositionY, - MdMenu + MdMenu, } from './index'; -import {OverlayContainer} from '../core/overlay/overlay-container'; -import {Directionality, Direction} from '../core/bidi/index'; +import {MENU_PANEL_TOP_PADDING} from './menu-trigger'; import {extendObject} from '../core/util/object-extend'; -import {ESCAPE} from '../core/keyboard/keycodes'; -import {dispatchKeyboardEvent} from '@angular/cdk/testing'; +import {dispatchKeyboardEvent, dispatchMouseEvent} from '@angular/cdk/testing'; describe('MdMenu', () => { @@ -33,7 +39,14 @@ describe('MdMenu', () => { dir = 'ltr'; TestBed.configureTestingModule({ imports: [MdMenuModule, NoopAnimationsModule], - declarations: [SimpleMenu, PositionedMenu, OverlapMenu, CustomMenuPanel, CustomMenu], + declarations: [ + SimpleMenu, + PositionedMenu, + OverlapMenu, + CustomMenuPanel, + CustomMenu, + NestedMenu + ], providers: [ {provide: OverlayContainer, useFactory: () => { overlayContainerElement = document.createElement('div'); @@ -147,6 +160,11 @@ describe('MdMenu', () => { expect(role).toBe('menu', 'Expected panel to have the "menu" role.'); }); + it('should not throw an error on destroy', () => { + const fixture = TestBed.createComponent(SimpleMenu); + expect(fixture.destroy.bind(fixture)).not.toThrow(); + }); + describe('positions', () => { let fixture: ComponentFixture; let panel: HTMLElement; @@ -491,12 +509,349 @@ describe('MdMenu', () => { }); }); - describe('destroy', () => { - it('does not throw an error on destroy', () => { - const fixture = TestBed.createComponent(SimpleMenu); - expect(fixture.destroy.bind(fixture)).not.toThrow(); + describe('nested menu', () => { + let fixture: ComponentFixture; + let instance: NestedMenu; + let overlay: HTMLElement; + let compileTestComponent = () => { + fixture = TestBed.createComponent(NestedMenu); + fixture.detectChanges(); + instance = fixture.componentInstance; + overlay = overlayContainerElement; + }; + + it('should set the `triggersSubmenu` flags on the triggers', () => { + compileTestComponent(); + expect(instance.rootTrigger.triggersSubmenu()).toBe(false); + expect(instance.levelOneTrigger.triggersSubmenu()).toBe(true); + expect(instance.levelTwoTrigger.triggersSubmenu()).toBe(true); + }); + + it('should set the `isSubmenu` flag on the menu instances', () => { + compileTestComponent(); + instance.rootTriggerEl.nativeElement.click(); + fixture.detectChanges(); + + instance.levelOneTrigger.openMenu(); + fixture.detectChanges(); + + instance.levelTwoTrigger.openMenu(); + fixture.detectChanges(); + + expect(instance.rootMenu.isSubmenu).toBe(false); + expect(instance.levelOneMenu.isSubmenu).toBe(true); + expect(instance.levelTwoMenu.isSubmenu).toBe(true); + }); + + it('should pass the layout direction the nested menus', () => { + dir = 'rtl'; + compileTestComponent(); + instance.rootTriggerEl.nativeElement.click(); + fixture.detectChanges(); + + instance.levelOneTrigger.openMenu(); + fixture.detectChanges(); + + instance.levelTwoTrigger.openMenu(); + fixture.detectChanges(); + + expect(instance.rootMenu.direction).toBe('rtl'); + expect(instance.levelOneMenu.direction).toBe('rtl'); + expect(instance.levelTwoMenu.direction).toBe('rtl'); + }); + + it('should emit an event when the hover state of the menu items changes', () => { + compileTestComponent(); + instance.rootTrigger.openMenu(); + fixture.detectChanges(); + + const spy = jasmine.createSpy('hover spy'); + const subscription = instance.rootMenu.hover.subscribe(spy); + const menuItems = overlay.querySelectorAll('[md-menu-item]'); + + dispatchMouseEvent(menuItems[0], 'mouseenter'); + fixture.detectChanges(); + + expect(spy).toHaveBeenCalledTimes(1); + + dispatchMouseEvent(menuItems[1], 'mouseenter'); + fixture.detectChanges(); + + expect(spy).toHaveBeenCalledTimes(2); + + subscription.unsubscribe(); + }); + + it('should toggle a nested menu when its trigger is hovered', () => { + compileTestComponent(); + instance.rootTriggerEl.nativeElement.click(); + fixture.detectChanges(); + expect(overlay.querySelectorAll('.mat-menu-panel').length).toBe(1, 'Expected one open menu'); + + const items = Array.from(overlay.querySelectorAll('.mat-menu-panel [md-menu-item]')); + const levelOneTrigger = overlay.querySelector('#level-one-trigger')!; + + dispatchMouseEvent(levelOneTrigger, 'mouseenter'); + fixture.detectChanges(); + expect(levelOneTrigger.classList) + .toContain('mat-menu-item-highlighted', 'Expected the trigger to be highlighted'); + expect(overlay.querySelectorAll('.mat-menu-panel').length).toBe(2, 'Expected two open menus'); + + dispatchMouseEvent(items[items.indexOf(levelOneTrigger) + 1], 'mouseenter'); + fixture.detectChanges(); + expect(overlay.querySelectorAll('.mat-menu-panel').length).toBe(1, 'Expected one open menu'); + expect(levelOneTrigger.classList) + .not.toContain('mat-menu-item-highlighted', 'Expected the trigger to not be highlighted'); + }); + + it('should close all the open sub-menus when the hover state is changed at the root', () => { + compileTestComponent(); + instance.rootTriggerEl.nativeElement.click(); + fixture.detectChanges(); + + const items = Array.from(overlay.querySelectorAll('.mat-menu-panel [md-menu-item]')); + const levelOneTrigger = overlay.querySelector('#level-one-trigger')!; + + dispatchMouseEvent(levelOneTrigger, 'mouseenter'); + fixture.detectChanges(); + + const levelTwoTrigger = overlay.querySelector('#level-two-trigger')! as HTMLElement; + dispatchMouseEvent(levelTwoTrigger, 'mouseenter'); + fixture.detectChanges(); + + expect(overlay.querySelectorAll('.mat-menu-panel').length) + .toBe(3, 'Expected three open menus'); + + dispatchMouseEvent(items[items.indexOf(levelOneTrigger) + 1], 'mouseenter'); + fixture.detectChanges(); + expect(overlay.querySelectorAll('.mat-menu-panel').length).toBe(1, 'Expected one open menu'); + }); + + it('should open a nested menu when its trigger is clicked', () => { + compileTestComponent(); + instance.rootTriggerEl.nativeElement.click(); + fixture.detectChanges(); + expect(overlay.querySelectorAll('.mat-menu-panel').length).toBe(1, 'Expected one open menu'); + + const levelOneTrigger = overlay.querySelector('#level-one-trigger')! as HTMLElement; + + levelOneTrigger.click(); + fixture.detectChanges(); + expect(overlay.querySelectorAll('.mat-menu-panel').length).toBe(2, 'Expected two open menus'); + + levelOneTrigger.click(); + fixture.detectChanges(); + expect(overlay.querySelectorAll('.mat-menu-panel').length) + .toBe(2, 'Expected repeat clicks not to close the menu.'); + }); + + it('should open and close a nested menu with arrow keys in ltr', () => { + compileTestComponent(); + instance.rootTriggerEl.nativeElement.click(); + fixture.detectChanges(); + expect(overlay.querySelectorAll('.mat-menu-panel').length).toBe(1, 'Expected one open menu'); + + const levelOneTrigger = overlay.querySelector('#level-one-trigger')! as HTMLElement; + + dispatchKeyboardEvent(levelOneTrigger, 'keydown', RIGHT_ARROW); + fixture.detectChanges(); + + const panels = overlay.querySelectorAll('.mat-menu-panel'); + + expect(panels.length).toBe(2, 'Expected two open menus'); + dispatchKeyboardEvent(panels[1], 'keydown', LEFT_ARROW); + fixture.detectChanges(); + + expect(overlay.querySelectorAll('.mat-menu-panel').length).toBe(1); }); + + it('should open and close a nested menu with the arrow keys in rtl', () => { + dir = 'rtl'; + fixture.destroy(); + compileTestComponent(); + instance.rootTriggerEl.nativeElement.click(); + fixture.detectChanges(); + expect(overlay.querySelectorAll('.mat-menu-panel').length).toBe(1, 'Expected one open menu'); + + const levelOneTrigger = overlay.querySelector('#level-one-trigger')! as HTMLElement; + + dispatchKeyboardEvent(levelOneTrigger, 'keydown', LEFT_ARROW); + fixture.detectChanges(); + + const panels = overlay.querySelectorAll('.mat-menu-panel'); + + expect(panels.length).toBe(2, 'Expected two open menus'); + dispatchKeyboardEvent(panels[1], 'keydown', RIGHT_ARROW); + fixture.detectChanges(); + + expect(overlay.querySelectorAll('.mat-menu-panel').length).toBe(1); + }); + + it('should not do anything with the arrow keys for a top-level menu', () => { + compileTestComponent(); + instance.rootTriggerEl.nativeElement.click(); + fixture.detectChanges(); + + const menu = overlay.querySelector('.mat-menu-panel')!; + + dispatchKeyboardEvent(menu, 'keydown', RIGHT_ARROW); + fixture.detectChanges(); + expect(overlay.querySelectorAll('.mat-menu-panel').length) + .toBe(1, 'Expected one menu to remain open'); + + dispatchKeyboardEvent(menu, 'keydown', LEFT_ARROW); + fixture.detectChanges(); + expect(overlay.querySelectorAll('.mat-menu-panel').length) + .toBe(1, 'Expected one menu to remain open'); + }); + + it('should close all of the menus when the backdrop is clicked', () => { + compileTestComponent(); + instance.rootTriggerEl.nativeElement.click(); + fixture.detectChanges(); + + instance.levelOneTrigger.openMenu(); + fixture.detectChanges(); + + instance.levelTwoTrigger.openMenu(); + fixture.detectChanges(); + + expect(overlay.querySelectorAll('.mat-menu-panel').length) + .toBe(3, 'Expected three open menus'); + expect(overlay.querySelectorAll('.cdk-overlay-backdrop').length) + .toBe(1, 'Expected one backdrop element'); + expect(overlay.querySelectorAll('.mat-menu-panel, .cdk-overlay-backdrop')[0].classList) + .toContain('cdk-overlay-backdrop', 'Expected backdrop to be beneath all of the menus'); + + (overlay.querySelector('.cdk-overlay-backdrop')! as HTMLElement).click(); + fixture.detectChanges(); + + expect(overlay.querySelectorAll('.mat-menu-panel').length).toBe(0, 'Expected no open menus'); + }); + + it('should shift focus between the sub-menus', () => { + compileTestComponent(); + instance.rootTrigger.openMenu(); + fixture.detectChanges(); + + expect(overlay.querySelector('.mat-menu-panel')!.contains(document.activeElement)) + .toBe(true, 'Expected focus to be inside the root menu'); + + instance.levelOneTrigger.openMenu(); + fixture.detectChanges(); + + expect(overlay.querySelectorAll('.mat-menu-panel')[1].contains(document.activeElement)) + .toBe(true, 'Expected focus to be inside the first nested menu'); + + instance.levelTwoTrigger.openMenu(); + fixture.detectChanges(); + + expect(overlay.querySelectorAll('.mat-menu-panel')[2].contains(document.activeElement)) + .toBe(true, 'Expected focus to be inside the second nested menu'); + + instance.levelTwoTrigger.closeMenu(); + fixture.detectChanges(); + + expect(overlay.querySelectorAll('.mat-menu-panel')[1].contains(document.activeElement)) + .toBe(true, 'Expected focus to be back inside the first nested menu'); + + instance.levelOneTrigger.closeMenu(); + fixture.detectChanges(); + + expect(overlay.querySelector('.mat-menu-panel')!.contains(document.activeElement)) + .toBe(true, 'Expected focus to be back inside the root menu'); + }); + + it('should not shift focus to the sub-menu when it was opened by hover', () => { + compileTestComponent(); + instance.rootTriggerEl.nativeElement.click(); + fixture.detectChanges(); + + const levelOneTrigger = overlay.querySelector('#level-one-trigger')! as HTMLElement; + + dispatchMouseEvent(levelOneTrigger, 'mouseenter'); + fixture.detectChanges(); + + expect(overlay.querySelectorAll('.mat-menu-panel')[1].contains(document.activeElement)) + .toBe(false, 'Expected focus to not be inside the nested menu'); + }); + + it('should position the sub-menu to the right edge of the trigger in ltr', () => { + compileTestComponent(); + instance.rootTriggerEl.nativeElement.style.position = 'fixed'; + instance.rootTriggerEl.nativeElement.style.left = '50%'; + instance.rootTriggerEl.nativeElement.style.top = '50%'; + instance.rootTrigger.openMenu(); + fixture.detectChanges(); + + instance.levelOneTrigger.openMenu(); + fixture.detectChanges(); + + const triggerRect = overlay.querySelector('#level-one-trigger')!.getBoundingClientRect(); + const panelRect = overlay.querySelectorAll('.mat-menu-panel')[1].getBoundingClientRect(); + + expect(Math.round(triggerRect.right)).toBe(Math.round(panelRect.left)); + expect(Math.round(triggerRect.top)).toBe(Math.round(panelRect.top) + MENU_PANEL_TOP_PADDING); + }); + + it('should fall back to aligning to the left edge of the trigger in ltr', () => { + compileTestComponent(); + instance.rootTriggerEl.nativeElement.style.position = 'fixed'; + instance.rootTriggerEl.nativeElement.style.right = '10px'; + instance.rootTriggerEl.nativeElement.style.top = '50%'; + instance.rootTrigger.openMenu(); + fixture.detectChanges(); + + instance.levelOneTrigger.openMenu(); + fixture.detectChanges(); + + const triggerRect = overlay.querySelector('#level-one-trigger')!.getBoundingClientRect(); + const panelRect = overlay.querySelectorAll('.mat-menu-panel')[1].getBoundingClientRect(); + + expect(Math.round(triggerRect.left)).toBe(Math.round(panelRect.right)); + expect(Math.round(triggerRect.top)).toBe(Math.round(panelRect.top) + MENU_PANEL_TOP_PADDING); + }); + + it('should position the sub-menu to the left edge of the trigger in rtl', () => { + dir = 'rtl'; + compileTestComponent(); + instance.rootTriggerEl.nativeElement.style.position = 'fixed'; + instance.rootTriggerEl.nativeElement.style.left = '50%'; + instance.rootTriggerEl.nativeElement.style.top = '50%'; + instance.rootTrigger.openMenu(); + fixture.detectChanges(); + + instance.levelOneTrigger.openMenu(); + fixture.detectChanges(); + + const triggerRect = overlay.querySelector('#level-one-trigger')!.getBoundingClientRect(); + const panelRect = overlay.querySelectorAll('.mat-menu-panel')[1].getBoundingClientRect(); + + expect(Math.round(triggerRect.left)).toBe(Math.round(panelRect.right)); + expect(Math.round(triggerRect.top)).toBe(Math.round(panelRect.top) + MENU_PANEL_TOP_PADDING); + }); + + it('should fall back to aligning to the right edge of the trigger in rtl', () => { + dir = 'rtl'; + compileTestComponent(); + instance.rootTriggerEl.nativeElement.style.position = 'fixed'; + instance.rootTriggerEl.nativeElement.style.left = '10px'; + instance.rootTriggerEl.nativeElement.style.top = '50%'; + instance.rootTrigger.openMenu(); + fixture.detectChanges(); + + instance.levelOneTrigger.openMenu(); + fixture.detectChanges(); + + const triggerRect = overlay.querySelector('#level-one-trigger')!.getBoundingClientRect(); + const panelRect = overlay.querySelectorAll('.mat-menu-panel')[1].getBoundingClientRect(); + + expect(Math.round(triggerRect.right)).toBe(Math.round(panelRect.left)); + expect(Math.round(triggerRect.top)).toBe(Math.round(panelRect.top) + MENU_PANEL_TOP_PADDING); + }); + }); + }); @Component({ @@ -559,17 +914,16 @@ class OverlapMenu implements TestableMenu { exportAs: 'mdCustomMenu' }) class CustomMenuPanel implements MdMenuPanel { + direction: Direction; xPosition: MenuPositionX = 'after'; yPosition: MenuPositionY = 'below'; - overlapTrigger: true; + overlapTrigger = true; + isSubmenu = false; @ViewChild(TemplateRef) templateRef: TemplateRef; @Output() close = new EventEmitter(); focusFirstItem = () => {}; setPositionClasses = () => {}; - _emitCloseEvent() { - this.close.emit(); - } } @Component({ @@ -583,3 +937,48 @@ class CustomMenuPanel implements MdMenuPanel { class CustomMenu { @ViewChild(MdMenuTrigger) trigger: MdMenuTrigger; } + + +@Component({ + template: ` + + + + + + + + + + + + + + + + + + + + ` +}) +class NestedMenu { + @ViewChild('root') rootMenu: MdMenu; + @ViewChild('rootTrigger') rootTrigger: MdMenuTrigger; + @ViewChild('rootTriggerEl') rootTriggerEl: ElementRef; + + @ViewChild('levelOne') levelOneMenu: MdMenu; + @ViewChild('levelOneTrigger') levelOneTrigger: MdMenuTrigger; + + @ViewChild('levelTwo') levelTwoMenu: MdMenu; + @ViewChild('levelTwoTrigger') levelTwoTrigger: MdMenuTrigger; +}