活动按钮状态流转

uni_modules/zebra-swiper/libs/transition/transitionEmit.js

@@ -0,0 +1,35 @@
+export default function transitionEmit({
+	swiper,
+	runCallbacks,
+	direction,
+	step
+}) {
+	const {
+		activeIndex,
+		previousIndex
+	} = swiper;
+	let dir = direction;
+
+	if (!dir) {
+		if (activeIndex > previousIndex) dir = 'next';
+		else if (activeIndex < previousIndex) dir = 'prev';
+		else dir = 'reset';
+	}
+
+	swiper.emit(`transition${step}`);
+
+	if (runCallbacks && activeIndex !== previousIndex) {
+		if (dir === 'reset') {
+			swiper.emit(`slideResetTransition${step}`);
+			return;
+		}
+
+		swiper.emit(`slideChangeTransition${step}`);
+
+		if (dir === 'next') {
+			swiper.emit(`slideNextTransition${step}`);
+		} else {
+			swiper.emit(`slidePrevTransition${step}`);
+		}
+	}
+}