TypeScript DOM.addClass方法代码示例

  /**
   * Apply an ink ripple to an element at the given position.
   *
   * @param element The element to apply a ripple to
   * @param x The x position inside the element for the ripple to originate from
   * @param y The y position inside the element for the ripple to originate from
   * @returns {Promise<any>} A promise that resolves when the ripple has faded
   */
  static ripple(element: HTMLElement, x: number, y: number): Promise<any> {
    let fit: boolean = isPresent(DOM.getAttribute(element, 'md-fab'));

    let container = DOM.createElement('div');
    DOM.addClass(container, 'md-ripple-container');

    let ripple = DOM.createElement('div');
    DOM.addClass(ripple, 'md-ripple');
    DOM.appendChild(container, ripple);

    DOM.appendChild(element, container);

    let getHostSize = () => {
      let elX = element.offsetWidth;
      let elY = element.offsetHeight;
      return Ink.getSize(fit, elX, elY);
    };
    let getInitialStyles = (): any => {
      let size = getHostSize();
      let color = DOM.getComputedStyle(element).color || 'rgb(0,0,0)';
      return {
        'background-color': color,
        left: `${x - size / 2}px`,
        top: `${y - size / 2}px`,
        width: `${size}px`,
        height: `${size}px`,
        opacity: 0.2,
        transform: 'scale(0.01)'
      };
    };

    return Animate.setStyles(ripple, getInitialStyles())
      .then(() => Animate.animateStyles(ripple, {
        left: '50%',
        top: '50%',
        opacity: 0.1,
        transform: 'translate(-50%, -50%) scale(1)'
      }, 450))
      .then(() => Animate.animateStyles(ripple, {opacity: 0}, 650))
      .then(() => DOM.removeChild(element, container));
  }

           tcb.overrideTemplate(TestComponent, html).createAsync(TestComponent).then((fixture) => {
             fixture.detectChanges();
             DOM.addClass(DOM.querySelector(fixture.debugElement.nativeElement, 'copy-me'), 'foo');

             fixture.debugElement.componentInstance.numberCondition = 2;
             fixture.detectChanges();
             expect(DOM.hasClass(
                        DOM.querySelector(fixture.debugElement.nativeElement, 'copy-me'), 'foo'))
                 .toBe(true);

             async.done();
           });

               .then((fixture) => {
                 fixture.detectChanges();
                 DOM.addClass(DOM.querySelector(fixture.debugElement.nativeElement, 'copy-me'),
                              "foo");

                 fixture.debugElement.componentInstance.numberCondition = 2;
                 fixture.detectChanges();
                 expect(
                     DOM.hasClass(DOM.querySelector(fixture.debugElement.nativeElement, 'copy-me'),
                                  "foo"))
                     .toBe(true);

                 async.done();
               });

  /**
   * Apply an ink ripple to an element at the given position.
   *
   * @param element The element to apply a ripple to
   * @param left The x position inside the element for the ripple to originate from
   * @param top The y position inside the element for the ripple to originate from
   * @returns {Promise<any>} A promise that resolves when the ripple has faded
   */
  static ripple(element: HTMLElement, left: number, top: number): Promise<any> {
    let fit: boolean = isPresent(DOM.getAttribute(element, 'md-fab'));

    let container = DOM.querySelector(element, '.md-ripple-container');
    if (!container) {
      container = DOM.createElement('div');
      DOM.addClass(container, 'md-ripple-container');
      DOM.appendChild(element, container);
    }

    let ripple = DOM.createElement('div');
    DOM.addClass(ripple, 'md-ripple');

    let getInitialStyles = (): any => {
      let color = DOM.getComputedStyle(element).color || 'rgb(0,0,0)';
      let size = Ink.getSize(fit, element.clientWidth, element.clientHeight);
      return {
        'background-color': color,
        left: `${left}px`,
        top: `${top}px`,
        width: `${size}px`,
        height: `${size}px`
      };
    };

    return Animate.setStyles(ripple, getInitialStyles())
      .then(() => DOM.appendChild(container, ripple))
      .then(() => DOM.addClass(ripple, 'md-ripple-placed'))
      .then(() => Animate.wait())
      .then(() => DOM.addClass(ripple, 'md-ripple-scaled'))
      .then(() => DOM.addClass(ripple, 'md-ripple-active'))
      .then(() => Animate.wait(450))
      .then(() => DOM.removeClass(ripple, 'md-ripple-active'))
      .then(() => Animate.wait(650))
      .then(() => DOM.removeChild(container, ripple));
  }

  /**
   * Move the position of the inkbar to the active tab name
   *
   * @param element The parent element that holds the tabs
   * @param inkbar The element for the inkbar
   * @param activeIndex The index of the active tab
   * @returns {Promise<any>} A promise that resolves when the ripple has faded.
   */
  static updateInkbar(element: HTMLElement, inkbar: HTMLElement, activeIndex: number, previousIndex?: number): Promise<any> {
    let containers = DOM.querySelectorAll(element, 'md-tab-item');

    if (activeIndex > containers.length) {
      return Promise.resolve();
    }

    let getDirection = (): string => {
      return (previousIndex > activeIndex) ? 'md-left' : 'md-right';
    };

    // Get new active tab
    let container = containers[activeIndex];
    let left = container.getBoundingClientRect().left - containers[0].getBoundingClientRect().left;
    let width = container.getBoundingClientRect().width;

    DOM.addClass(inkbar, getDirection())
    return Animate.setStyles(inkbar, { left: `${left}px`, width: `${width}px` })
      .then(() => Animate.wait(250))
      .then(() => DOM.removeClass(inkbar, getDirection()));
  }

 .then(() => DOM.addClass(ripple, 'md-ripple-active'))

 constructor(el: ElementRef) { DOM.addClass(el.nativeElement, 'compiled'); }