您如何绑定到Angular-UI的轮播幻灯片事件? [英] How do you Bind to Angular-UI's Carousel Slide Events?

问题描述

我正在使用Angular-UI的轮播，在滑入视图后，我需要告诉Google图表重新绘制.尽管我读了什么，但似乎无法参与到该事件中.

I'm using Angular-UI's carousel and I need to tell my google charts to redraw after they have slid into view. In spite of what I've read, I can't seem to hook into the event.

看看我的尝试: http://plnkr.co/edit/Dt0wdzeimBcDlOONRiJJ?p=preview

HTML:

<carousel id="myC" interval="myInterval">
  <slide ng-repeat="slide in slides" active="slide.active">
    <img ng-src="{{slide.image}}" style="margin:auto;">
    <div class="carousel-caption">
      <h4>Slide {{$index}}</h4>
      <p>{{slide.text}}</p>
    </div>
  </slide>
</carousel>

在文档加载时:

$('#myC').live('slid.bs.carousel', function (event) { console.log("slid"); } );

它应该像这样工作: http://jsfiddle.net/9fwuq/-非角度UI轮播

It should work something like this: http://jsfiddle.net/9fwuq/ - non-angular-ui carousel

也许我可以通过更多的Angular方法来了解我的图表已滑入视图的事实?

Perhaps there is a more Angular way to hook into the fact that my chart has slid into view?

推荐答案

我可以想到3种方法，这取决于您的要求.

There are 3 ways I can think of and that depends of your requirement.

有关示例，请参见 http://plnkr.co/edit/FnI8ZX4UQYS9mDUlrf6o?p=preview ./p>

Please see http://plnkr.co/edit/FnI8ZX4UQYS9mDUlrf6o?p=preview for examples.

1. 使用$ scope.$ watch查看单个幻灯片，以检查它是否处于活动状态.

1. use $scope.$watch for an individual slide to check if it is become active.

$scope.$watch('slides[0].active', function (active) {
  if (active) {
    console.log('slide 0 is active');
  }
});

使用具有自定义功能的$ scope.$ watch查找活动幻灯片.

use $scope.$watch with custom function to find an active slide.

$scope.$watch(function () {
  for (var i = 0; i < slides.length; i++) {
    if (slides[i].active) {
      return slides[i];
    }
  }
}, function (currentSlide, previousSlide) {
  if (currentSlide !== previousSlide) {
    console.log('currentSlide:', currentSlide);
  }
});

使用自定义指令来拦截轮播指令的select()函数.

use a custom directive to intercept select() function of the carousel directive.

.directive('onCarouselChange', function ($parse) {
  return {
    require: 'carousel',
    link: function (scope, element, attrs, carouselCtrl) {
      var fn = $parse(attrs.onCarouselChange);
      var origSelect = carouselCtrl.select;
      carouselCtrl.select = function (nextSlide, direction) {
        if (nextSlide !== this.currentSlide) {
          fn(scope, {
            nextSlide: nextSlide,
            direction: direction,
          });
        }
        return origSelect.apply(this, arguments);
      };
    }
  };
});

并像这样使用它:

$scope.onSlideChanged = function (nextSlide, direction) {
    console.log('onSlideChanged:', direction, nextSlide);
};

并在html模板中:

and in html template:

<carousel interval="myInterval" on-carousel-change="onSlideChanged(nextSlide, direction)">
...

希望获得帮助:)

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