ionic/ionic/components/menu/menu.ts at loading · Java1024/ionic · GitHub

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import {Component, forwardRef, Directive, Host, EventEmitter, ElementRef, NgZone, Input, Output, Renderer} from 'angular2/core';

import {Ion} from '../ion';

import {Config} from '../../config/config';

import {Platform} from '../../platform/platform';

import {Keyboard} from '../../util/keyboard';

import {MenuContentGesture, MenuTargetGesture} from './menu-gestures';

import {MenuController} from './menu-controller';

import {MenuType} from './menu-types';

import {isTrueProperty} from '../../util/util';

/**

* @private

@Component({

selector: 'ion-menu',

host: {

'role': 'navigation'

template:

'<ng-content></ng-content>' +

'<div tappable disable-activated class="backdrop"></div>',

directives: [forwardRef(() => MenuBackdrop)]

})

export class Menu extends Ion {

private _preventTime: number = 0;

private _cntEle: HTMLElement;

private _cntGesture: MenuTargetGesture;

private _menuGesture: MenuContentGesture;

private _type: MenuType;

private _resizeUnreg: Function;

private _isEnabled: boolean = true;

private _isSwipeEnabled: boolean = true;

private _isPers: boolean = false;

private _init: boolean = false;

/**

* @private

isOpen: boolean = false;

/**

* @private

backdrop: MenuBackdrop;

/**

* @private

onContentClick: EventListener;

/**

* @private

@Input() content: any;

/**

* @private

@Input() id: string;

/**

* @private

@Input() side: string;

/**

* @private

@Input() type: string;

/**

* @private

@Input()

get enabled(): boolean {

return this._isEnabled;

}

set enabled(val: boolean) {

this._isEnabled = isTrueProperty(val);

this._setListeners();

}

/**

* @private

@Input()

get swipeEnabled(): boolean {

return this._isSwipeEnabled;

}

set swipeEnabled(val: boolean) {

this._isSwipeEnabled = isTrueProperty(val);

this._setListeners();

}

/**

* @private

@Input()

get persistent(): boolean {

return this._isPers;

}

set persistent(val: boolean) {

this._isPers = isTrueProperty(val);

}

/**

* @private

@Input() maxEdgeStart: number;

/**

* @private

@Output() opening: EventEmitter<number> = new EventEmitter();

constructor(

private _menuCtrl: MenuController,

private _elementRef: ElementRef,

private _config: Config,

private _platform: Platform,

private _renderer: Renderer,

private _keyboard: Keyboard,

private _zone: NgZone

) {

super(_elementRef);

}

/**

* @private

ngOnInit() {

let self = this;

self._init = true;

let content = self.content;

self._cntEle = (content instanceof Node) ? content : content && content.getNativeElement && content.getNativeElement();

// requires content element

if (!self._cntEle) {

return console.error('Menu: must have a [content] element to listen for drag events on. Example:\n\n<ion-menu [content]="content"></ion-menu>\n\n<ion-nav #content></ion-nav>');

}

// normalize the "side"

if (self.side !== 'left' && self.side !== 'right') {

self.side = 'left';

}

self._renderer.setElementAttribute(self._elementRef.nativeElement, 'side', self.side);

// normalize the "type"

if (!self.type) {

self.type = self._config.get('menuType');

}

self._renderer.setElementAttribute(self._elementRef.nativeElement, 'type', self.type);

// add the gestures

self._cntGesture = new MenuContentGesture(self, self.getContentElement());

self._menuGesture = new MenuTargetGesture(self, self.getNativeElement());

// register listeners if this menu is enabled

// check if more than one menu is on the same side

let hasEnabledSameSideMenu = self._menuCtrl.getMenus().some(m => {

return m.side === self.side && m.enabled;

});

if (hasEnabledSameSideMenu) {

// auto-disable if another menu on the same side is already enabled

self._isEnabled = false;

}

self._setListeners();

// create a reusable click handler on this instance, but don't assign yet

self.onContentClick = function(ev: UIEvent) {

if (self._isEnabled) {

ev.preventDefault();

ev.stopPropagation();

self.close();

}

};

self._cntEle.classList.add('menu-content');

self._cntEle.classList.add('menu-content-' + self.type);

// register this menu with the app's menu controller

self._menuCtrl.register(self);

}

/**

* @private

private _setListeners() {

let self = this;

if (self._init) {

// only listen/unlisten if the menu has initialized

if (self._isEnabled && self._isSwipeEnabled && !self._cntGesture.isListening) {

// should listen, but is not currently listening

console.debug('menu, gesture listen', self.side);

self._zone.runOutsideAngular(function() {

self._cntGesture.listen();

self._menuGesture.listen();

});

} else if (self._cntGesture.isListening && (!self._isEnabled || !self._isSwipeEnabled)) {

// should not listen, but is currently listening

console.debug('menu, gesture unlisten', self.side);

self._cntGesture.unlisten();

self._menuGesture.unlisten();

}

/**

* @private

private _getType(): MenuType {

if (!this._type) {

this._type = MenuController.create(this.type, this);

if (this._config.get('animate') === false) {

this._type.ani.duration(0);

}

return this._type;

}

/**

* Sets the state of the Menu to open or not.

* @param {boolean} shouldOpen If the Menu is open or not.

* @return {Promise} returns a promise once set

setOpen(shouldOpen: boolean): Promise<boolean> {

// _isPrevented is used to prevent unwanted opening/closing after swiping open/close

// or swiping open the menu while pressing down on the menuToggle button

if ((shouldOpen && this.isOpen) || this._isPrevented()) {

return Promise.resolve(this.isOpen);

}

this._before();

return new Promise(resolve => {

this._getType().setOpen(shouldOpen, () => {

this._after(shouldOpen);

resolve(this.isOpen);

});

}

/**

* @private

swipeStart() {

// user started swiping the menu open/close

if (this._isPrevented() || !this._isEnabled || !this._isSwipeEnabled) return;

this._before();

this._getType().setProgressStart(this.isOpen);

}

/**

* @private

swipeProgress(stepValue: number) {

// user actively dragging the menu

if (this._isEnabled && this._isSwipeEnabled) {

this._prevent();

this._getType().setProgessStep(stepValue);

this.opening.next(stepValue);

}

/**

* @private

swipeEnd(shouldComplete: boolean, currentStepValue: number) {

// user has finished dragging the menu

if (this._isEnabled && this._isSwipeEnabled) {

this._prevent();

this._getType().setProgressEnd(shouldComplete, currentStepValue, (isOpen) => {

console.debug('menu, swipeEnd', this.side);

this._after(isOpen);

});

}

/**

* @private

private _before() {

// this places the menu into the correct location before it animates in

// this css class doesn't actually kick off any animations

if (this._isEnabled) {

this.getNativeElement().classList.add('show-menu');

this.getBackdropElement().classList.add('show-backdrop');

this._prevent();

this._keyboard.close();

}

/**

* @private

private _after(isOpen: boolean) {

// keep opening/closing the menu disabled for a touch more yet

// only add listeners/css if it's enabled and isOpen

// and only remove listeners/css if it's not open

if ((this._isEnabled && isOpen) || !isOpen) {

this._prevent();

this.isOpen = isOpen;

this._cntEle.classList[isOpen ? 'add' : 'remove']('menu-content-open');

this._cntEle.removeEventListener('click', this.onContentClick);

if (isOpen) {

this._cntEle.addEventListener('click', this.onContentClick);

} else {

this.getNativeElement().classList.remove('show-menu');

this.getBackdropElement().classList.remove('show-backdrop');

}

/**

* @private

private _prevent() {

// used to prevent unwanted opening/closing after swiping open/close

// or swiping open the menu while pressing down on the menuToggle

this._preventTime = Date.now() + 20;

}

/**

* @private

private _isPrevented() {

return this._preventTime > Date.now();

}

/**

* Progamatically open the Menu.

* @return {Promise} returns a promise when the menu is fully opened.

open() {

return this.setOpen(true);

}

/**

* Progamatically close the Menu.

* @return {Promise} returns a promise when the menu is fully closed.

close() {

return this.setOpen(false);

}

/**

* Toggle the menu. If it's closed, it will open, and if opened, it will close.

* @return {Promise} returns a promise when the menu has been toggled.

toggle() {

return this.setOpen(!this.isOpen);

}

/**

* Used to enable or disable a menu. For example, there could be multiple

* left menus, but only one of them should be able to be opened at the same

* time. If there are multiple menus on the same side, then enabling one menu

* will also automatically disable all the others that are on the same side.

* @param {boolean} shouldEnable True if it should be enabled, false if not.

* @return {Menu} Returns the instance of the menu, which is useful for chaining.

enable(shouldEnable: boolean): Menu {

this.enabled = shouldEnable;

if (!shouldEnable && this.isOpen) {

// close if this menu is open, and should not be enabled

this.close();

}

if (shouldEnable) {

// if this menu should be enabled

// then find all the other menus on this same side

// and automatically disable other same side menus

let sameSideMenus = this._menuCtrl

.getMenus()

.filter(m => m.side === this.side && m !== this)

.map(m => m.enabled = false);

}

return this;

}

/**

* Used to enable or disable the ability to swipe open the menu.

* @param {boolean} shouldEnable True if it should be swipe-able, false if not.

* @return {Menu} Returns the instance of the menu, which is useful for chaining.

swipeEnable(shouldEnable: boolean): Menu {

this.swipeEnabled = shouldEnable;

return this;

}

/**

* @private

getMenuElement(): HTMLElement {

return this.getNativeElement();

}

/**

* @private

getContentElement(): HTMLElement {

return this._cntEle;

}

/**

* @private

getBackdropElement(): HTMLElement {

return this.backdrop.elementRef.nativeElement;

}

/**

* @private

ngOnDestroy() {

this._menuCtrl.unregister(this);

this._cntGesture && this._cntGesture.destroy();

this._menuGesture && this._menuGesture.destroy();

this._type && this._type.destroy();

this._resizeUnreg && this._resizeUnreg();

this._cntEle = null;

}

/**

* @private

@Directive({

selector: '.backdrop',

host: {

'(click)': 'clicked($event)',

}

})

export class MenuBackdrop {

constructor(@Host() private _menuCtrl: Menu, public elementRef: ElementRef) {

_menuCtrl.backdrop = this;

}

/**

* @private

private clicked(ev) {

console.debug('backdrop clicked');

ev.preventDefault();

ev.stopPropagation();

this._menuCtrl.close();

}

ionic/ionic/components/menu/menu.ts at loading · Java1024/ionic · GitHub

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