Tracking de l'application VApp (IHM du jeu)

VApp/node_modules/vuetify/lib/composables/scroll.mjs

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+// Utilities
+import { computed, onBeforeUnmount, onMounted, ref, shallowRef, watch } from 'vue';
+import { clamp, consoleWarn, propsFactory } from "../util/index.mjs"; // Types
+// Composables
+export const makeScrollProps = propsFactory({
+  scrollTarget: {
+    type: String
+  },
+  scrollThreshold: {
+    type: [String, Number],
+    default: 300
+  }
+}, 'scroll');
+export function useScroll(props) {
+  let args = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+  const {
+    canScroll
+  } = args;
+  let previousScroll = 0;
+  const target = ref(null);
+  const currentScroll = shallowRef(0);
+  const savedScroll = shallowRef(0);
+  const currentThreshold = shallowRef(0);
+  const isScrollActive = shallowRef(false);
+  const isScrollingUp = shallowRef(false);
+  const scrollThreshold = computed(() => {
+    return Number(props.scrollThreshold);
+  });
+
+  /**
+   * 1: at top
+   * 0: at threshold
+   */
+  const scrollRatio = computed(() => {
+    return clamp((scrollThreshold.value - currentScroll.value) / scrollThreshold.value || 0);
+  });
+  const onScroll = () => {
+    const targetEl = target.value;
+    if (!targetEl || canScroll && !canScroll.value) return;
+    previousScroll = currentScroll.value;
+    currentScroll.value = 'window' in targetEl ? targetEl.pageYOffset : targetEl.scrollTop;
+    isScrollingUp.value = currentScroll.value < previousScroll;
+    currentThreshold.value = Math.abs(currentScroll.value - scrollThreshold.value);
+  };
+  watch(isScrollingUp, () => {
+    savedScroll.value = savedScroll.value || currentScroll.value;
+  });
+  watch(isScrollActive, () => {
+    savedScroll.value = 0;
+  });
+  onMounted(() => {
+    watch(() => props.scrollTarget, scrollTarget => {
+      const newTarget = scrollTarget ? document.querySelector(scrollTarget) : window;
+      if (!newTarget) {
+        consoleWarn(`Unable to locate element with identifier ${scrollTarget}`);
+        return;
+      }
+      if (newTarget === target.value) return;
+      target.value?.removeEventListener('scroll', onScroll);
+      target.value = newTarget;
+      target.value.addEventListener('scroll', onScroll, {
+        passive: true
+      });
+    }, {
+      immediate: true
+    });
+  });
+  onBeforeUnmount(() => {
+    target.value?.removeEventListener('scroll', onScroll);
+  });
+
+  // Do we need this? If yes - seems that
+  // there's no need to expose onScroll
+  canScroll && watch(canScroll, onScroll, {
+    immediate: true
+  });
+  return {
+    scrollThreshold,
+    currentScroll,
+    currentThreshold,
+    isScrollActive,
+    scrollRatio,
+    // required only for testing
+    // probably can be removed
+    // later (2 chars chlng)
+    isScrollingUp,
+    savedScroll
+  };
+}
+//# sourceMappingURL=scroll.mjs.map