TypeScript util.isPresent函數代碼示例

本文整理匯總了TypeScript中ionic-angular/util/util.isPresent函數的典型用法代碼示例。如果您正苦於以下問題：TypeScript isPresent函數的具體用法？TypeScript isPresent怎麽用？TypeScript isPresent使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。

在下文中一共展示了isPresent函數的5個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的TypeScript代碼示例。

示例1: constructor

    constructor(_app: App, component, data: any = {}, opts: DropdownOptions = {}) {
        opts.showBackdrop = isPresent(opts.showBackdrop) ? !!opts.showBackdrop : true;
        opts.enableBackdropDismiss = isPresent(opts.enableBackdropDismiss) ? !!opts.enableBackdropDismiss : true;

        data.component = component;
        data.opts = opts;

        super(DropdownCom, data, null);

        this._app = _app;
        this.isOverlay = true;
    }

開發者ID:qwb0920，項目名稱:TaxiBus，代碼行數:12，代碼來源:dropdown.ts

示例2: init

  init() {
    super.init();

    const plt = this.plt;
    const enteringView = this.enteringView;
    const leavingView = this.leavingView;
    const opts = this.opts;
    //opts.duration = 2000;

    // what direction is the transition going
    const backDirection = opts.direction === 'back';

    if (enteringView) {
      if (backDirection) {
        this.duration(isPresent(opts.duration) ? opts.duration : 200).easing('cubic-bezier(0.47,0,0.745,0.715)');
      } else {
        this.duration(isPresent(opts.duration) ? opts.duration : 280).easing('cubic-bezier(0.36,0.66,0.04,1)');
        this.enteringPage.fromTo(TRANSLATEX, OFF_RIGHT, CENTER, true);
        if (leavingView) {
          const leavingPage = new Animation(this.plt, leavingView.pageRef());
          this.add(leavingPage.fromTo('scale', '1', '0.9', true));
        }
      }

      if (enteringView.hasNavbar()) {
        const enteringPageEle: Element = enteringView.pageRef().nativeElement;
        const enteringNavbarEle: Element = enteringPageEle.querySelector('ion-navbar');

        const enteringNavBar = new Animation(plt, enteringNavbarEle);
        this.add(enteringNavBar);

        const enteringBackButton = new Animation(plt, enteringNavbarEle.querySelector('.back-button'));
        this.add(enteringBackButton);
        if (enteringView.enableBack()) {
          enteringBackButton.beforeAddClass(SHOW_BACK_BTN_CSS);
        } else {
          enteringBackButton.beforeRemoveClass(SHOW_BACK_BTN_CSS);
        }
      }
    }

    // setup leaving view
    if (leavingView && backDirection) {
      // leaving content
      this.duration(opts.duration || 200).easing('cubic-bezier(0.47,0,0.745,0.715)');
      const leavingPage = new Animation(plt, leavingView.pageRef());
      this.add(leavingPage.fromTo(TRANSLATEY, CENTER, OFF_BOTTOM).fromTo('opacity', 1, 0));
    }
  }

開發者ID:ifiske，項目名稱:iFiske，代碼行數:49，代碼來源:transition-md.ts

示例3: constructor

 constructor(
   public navParams: NavParams,
   public viewCtrl: ViewController,
   public questionService: QuestionService
 ) {
   this.questionSlug = navParams.get('slug');
   this._detail_slug = isPresent(this.questionSlug) ? this.questionSlug : '';
 }

開發者ID:allancmello，項目名稱:building-a-complete-mobile-app-with-ionic-3，代碼行數:8，代碼來源:manage-question.ts

示例4: init

  init() {
      console.log("SlideUpTransition");
    super.init();

    const enteringView = this.enteringView;
    const leavingView = this.leavingView;
    const opts = this.opts;

    this.duration(isPresent(opts.duration) ? opts.duration : DURATION);

    const forwardDirection = (opts.direction === 'forward');
    const backDirection = (opts.direction === 'back');

    if (enteringView) {
        console.log("enteringView");
      const enteringPageEle: Element = enteringView.pageRef().nativeElement;

      const enteringContent = new Animation(this.plt,enteringView.pageRef());
      this.add(enteringContent);
      if (forwardDirection) {
          enteringContent.fromTo(OPACITY, OPAQUE, OPAQUE, true);
          enteringContent.fromTo('translateY', '100%', '0%');          
      }
    //   } else if(backDirection){
    //       enteringContent.fromTo(OPACITY, OPAQUE, OPAQUE, true);
    //       enteringContent.fromTo('translateY', '0%', '100%');
    //   }
    }

    if (leavingView && leavingView.pageRef()) { //no effect
      console.log("leavingView");

      const leavingPageEle: Element = leavingView.pageRef().nativeElement;
      const leavingContent = new Animation( this.plt,leavingView.pageRef());

      this.add(leavingContent);

      if (backDirection) {
         leavingContent.fromTo(OPACITY, OPAQUE, OPAQUE, true);
         leavingContent.fromTo('translateY', '0%', '100%');
      }
      
    }
  }

開發者ID:raceyi，項目名稱:takit，代碼行數:44，代碼來源:slide-up-transition.ts

示例5: init

 init(): void {
     super.init();
     const plt = this.plt;
     const OFF_RIGHT = plt.isRTL ? '-99.5%' : '99.5%';
     const OFF_LEFT = plt.isRTL ? '33%' : '-33%';
     const enteringView = this.enteringView;
     const leavingView = this.leavingView;
     const opts = this.opts;
     this.duration(isPresent(opts.duration) ? opts.duration : DURATION);
     this.easing(isPresent(opts.easing) ? opts.easing : EASING);
     const backDirection = (opts.direction === 'back');
     const enteringHasNavbar = (enteringView && enteringView.hasNavbar());
     const leavingHasNavbar = (leavingView && leavingView.hasNavbar());
     if (enteringView) {
         // Get the native element for the entering page.
         const enteringPageEle = enteringView.pageRef().nativeElement;
         // Entering content.
         const enteringContent = new Animation(plt, enteringPageEle);
         this.add(enteringContent);
         if (backDirection) {
             // Entering content, back direction.
             enteringContent
                 .fromTo(TRANSLATEX, OFF_LEFT, CENTER, true)
                 .fromTo(OPACITY, OFF_OPACITY, 1, true);
         }
         else {
             // Entering content, forward direction.
             enteringContent
                 .beforeClearStyles([OPACITY])
                 .fromTo(TRANSLATEX, OFF_RIGHT, CENTER, true);
         }
         if (enteringHasNavbar) {
             // Entering page has a navbar.
             const enteringNavbarEle = enteringPageEle.querySelector('ion-navbar');
             const enteringNavBar = new Animation(plt, enteringNavbarEle);
             this.add(enteringNavBar);
             const enteringBackButton = new Animation(plt, enteringNavbarEle.querySelector('.back-button'));
             enteringNavBar
                 .add(enteringBackButton);
             // Set properties depending on direction.
             if (backDirection) {
                 // Entering navbar, back direction.
                 if (enteringView.enableBack()) {
                     // Back direction, entering page has a back button.
                     enteringBackButton
                         .beforeAddClass(SHOW_BACK_BTN_CSS)
                         .fromTo(OPACITY, 0.01, 1, true);
                 }
             }
             else {
                 // Entering navbar, forward direction.
                 if (enteringView.enableBack()) {
                     // Forward direction, entering page has a back button.
                     enteringBackButton
                         .beforeAddClass(SHOW_BACK_BTN_CSS)
                         .fromTo(OPACITY, 0.01, 1, true);
                     const enteringBackBtnText = new Animation(plt, enteringNavbarEle.querySelector('.back-button-text'));
                     enteringBackBtnText.fromTo(TRANSLATEX, (plt.isRTL ? '-100px' : '100px'), '0px');
                     enteringNavBar.add(enteringBackBtnText);
                 }
                 else {
                     enteringBackButton.beforeRemoveClass(SHOW_BACK_BTN_CSS);
                 }
             }
         }
     }
     // Setup leaving view.
     if (leavingView && leavingView.pageRef()) {
         // Leaving content.
         const leavingPageEle = leavingView.pageRef().nativeElement;
         const leavingContent = new Animation(plt, leavingPageEle);
         this.add(leavingContent);
         if (backDirection) {
             // Leaving content, back direction.
             leavingContent
                 .beforeClearStyles([OPACITY])
                 .fromTo(TRANSLATEX, CENTER, (plt.isRTL ? '-100%' : '100%'));
         }
         else {
             // Leaving content, forward direction.
             leavingContent
                 .fromTo(TRANSLATEX, CENTER, OFF_LEFT)
                 .fromTo(OPACITY, 1, OFF_OPACITY)
                 .afterClearStyles([TRANSFORM, OPACITY]);
         }
         if (leavingHasNavbar) {
             // Leaving page has a navbar.
             const leavingNavbarEle = leavingPageEle.querySelector('ion-navbar');
             const leavingNavBar = new Animation(plt, leavingNavbarEle);
             const leavingBackButton = new Animation(plt, leavingNavbarEle.querySelector('.back-button'));
             leavingNavBar
                 .add(leavingBackButton);
             this.add(leavingNavBar);
             // Fade out leaving navbar items.
             leavingBackButton.fromTo(OPACITY, 0.99, 0);
             if (backDirection) {
                 const leavingBackBtnText = new Animation(plt, leavingNavbarEle.querySelector('.back-button-text'));
                 leavingBackBtnText.fromTo(TRANSLATEX, CENTER, (plt.isRTL ? -300 : 300) + 'px');
                 leavingNavBar.add(leavingBackBtnText);
             }
//.........這裏部分代碼省略.........

開發者ID:SATS-Seminary，項目名稱:moodlemobile2，代碼行數:101，代碼來源:page-transition.ts

注：本文中的ionic-angular/util/util.isPresent函數示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。