Add missing swipe click component

src/components/swipe_click/swipe_click.js

@@ -0,0 +1,85 @@
+import GestureService from '../../services/gesture_service/gesture_service'
+
+/**
+ * props:
+ *   direction: a vector that indicates the direction of the intended swipe
+ *   threshold: the minimum distance in pixels the swipe has moved on `direction'
+ *              for swipe-finished() to have a non-zero sign
+ *   perpendicularTolerance: see gesture_service
+ *
+ * Events:
+ *   preview-requested(offsets)
+ *     Emitted when the pointer has moved.
+ *     offsets: the offsets from the start of the swipe to the current cursor position
+ *
+ *   swipe-canceled()
+ *     Emitted when the swipe has been canceled due to a pointercancel event.
+ *
+ *   swipe-finished(sign: 0|-1|1)
+ *     Emitted when the swipe has finished.
+ *     sign: if the swipe does not meet the threshold, 0
+ *           if the swipe meets the threshold in the positive direction, 1
+ *           if the swipe meets the threshold in the negative direction, -1
+ *
+ *   swipeless-clicked()
+ *     Emitted when there is a click without swipe.
+ *     This and swipe-finished() cannot be emitted for the same pointerup event.
+ */
+const SwipeClick = {
+  props: {
+    direction: {
+      type: Array
+    },
+    threshold: {
+      type: Number,
+      default: 30
+    },
+    perpendicularTolerance: {
+      type: Number,
+      default: 1.0
+    }
+  },
+  methods: {
+    handlePointerDown (event) {
+      this.$gesture.start(event)
+    },
+    handlePointerMove (event) {
+      this.$gesture.move(event)
+    },
+    handlePointerUp (event) {
+      this.$gesture.end(event)
+    },
+    handlePointerCancel (event) {
+      this.$gesture.cancel(event)
+    },
+    handleNativeClick (event) {
+      event.stopPropagation()
+      event.preventDefault()
+    },
+    preview (offsets) {
+      this.$emit('preview-requested', offsets)
+    },
+    end (sign) {
+      this.$emit('swipe-finished', sign)
+    },
+    click () {
+      this.$emit('swipeless-clicked')
+    },
+    cancel () {
+      this.$emit('swipe-canceled')
+    }
+  },
+  created () {
+    this.$gesture = new GestureService.SwipeAndClickGesture({
+      direction: this.direction,
+      threshold: this.threshold,
+      perpendicularTolerance: this.perpendicularTolerance,
+      swipePreviewCallback: this.preview,
+      swipeEndCallback: this.end,
+      swipeCancelCallback: this.cancel,
+      swipelessClickCallback: this.click
+    });
+  }
+}
+
+export default SwipeClick

src/components/swipe_click/swipe_click.vue

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+<template>
+  <div
+    v-bind="$attrs"
+    @pointerdown="handlePointerDown"
+    @pointermove="handlePointerMove"
+    @pointerup="handlePointerUp"
+    @pointercancel="handlePointerCancel"
+    @click="handleNativeClick"
+  >
+    <slot />
+  </div>
+</template>
+
+<script src="./swipe_click.js"></script>