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directive-inview.ts
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directive-inview.ts
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import {Inview} from '../dom/inview';
export class InviewController {
// The root element to determine visibility.
private element: HTMLElement;
private inview: Inview;
static get $inject() {
return ['$scope', '$element'];
}
constructor($scope: ng.IScope, $element: ng.IAugmentedJQuery) {
this.element = $element[0];
this.inview = new Inview({
element: this.element,
childSelector: this.element.getAttribute('inview-selector') || undefined,
elementBaseline:
+this.element.getAttribute('inview-element-baseline')! || undefined,
viewportOffset:
+this.element.getAttribute('inview-viewport-offset')! || undefined,
// outviewOnlyOnElementExit: true
downOnlyMode: true,
});
$scope.$on('$destroy', () => {
this.dispose();
});
}
dispose() {
this.inview && this.inview.dispose();
}
}
/**
* A simple inview directive. This is based on dom/Inview.
*
*
* # Basic inview
* ```
* <div inview></div>
*
* when inview:
* <div inview class="in"></div>
* ```
*
*
* # Settings
* Shifting position.
* <div inview inview-element-baseline="0" inview-viewport-offset="0.25"></div>
*
*
* # Child Selectors
* Use target selectors to add inview to child elements.
* Note that the element used to determine inview state is still
* the root inview directive element.
* ```
* <div inview inview-selector="[add-inview]">
* <div add-inview>my title</div>
* <div add-inview>body</div>
* </div>
*
* when inview:
*
* <div inview inview-selector="[add-inview]">
* <div add-inview class="in" inview-number="0">my title</div>
* <div add-inview class="in" inview-number="1">body</div>
* </div>
* ```
*
*
*/
export const inviewDirective = function () {
return {
restrict: 'A',
controller: InviewController,
};
};