From ea73a4be4e1a39e9bbc1047e3f71a9d629b39a72 Mon Sep 17 00:00:00 2001
From: cnouguier <ch.nouguier@gmail.com>
Date: Wed, 21 Aug 2024 16:21:36 +0200
Subject: [PATCH] wip: Provide a new TimeLine component #909 wip: Refactor
 collections based components #917

---
 core/client/components/collection/KGrid.vue   | 113 ++++++++++++------
 .../components/collection/KScrollDown.vue     |  10 +-
 .../components/collection/KScrollToTop.vue    |  10 +-
 .../components/collection/KTimeLine.vue       |   7 +-
 4 files changed, 99 insertions(+), 41 deletions(-)

diff --git a/core/client/components/collection/KGrid.vue b/core/client/components/collection/KGrid.vue
index e72f76d4a..efa70fe7f 100644
--- a/core/client/components/collection/KGrid.vue
+++ b/core/client/components/collection/KGrid.vue
@@ -13,37 +13,52 @@
     -->
     <div v-if="items.length > 0" class="col">
       <!-- Infinite mode -->
-      <div v-if="appendItems" class="fit scroll">
-        <q-infinite-scroll
-          @load="onLoad"
-          :initial-index="1"
-          :offset="200"
-          class="fit"
+      <div v-if="appendItems" class="fit column no-wrap">
+        <div ref="scrollTargetRef" id="scroll-target" class="fit scroll">
+          <q-infinite-scroll
+            @load="onLoad"
+            :initial-index="1"
+            :offset="200"
+            v-scroll="onScroll"
+          >
+            <div class="row">
+              <template v-for="(item, index) in items" :key="item._id">
+                <div :class="rendererClass">
+                  <component
+                    :id="item._id"
+                    :service="service"
+                    :item="item"
+                    :contextId="contextId"
+                    :is="itemRenderer"
+                    v-bind="renderer"
+                    @item-selected="onItemSelected"
+                  />
+                </div>
+              </template>
+            </div>
+          </q-infinite-scroll>
+        </div>
+        <div v-if="scrollTargetRef" 
+          :class="$q.screen.lt.md ? 'q-px-sm' : 'q-px-md'"
+          class="row items-center"
         >
-          <div class="row">
-            <template v-for="(item, index) in items" :key="item._id">
-              <div :class="rendererClass">
-                <component
-                  :id="item._id"
-                  :service="service"
-                  :item="item"
-                  :contextId="contextId"
-                  :is="itemRenderer"
-                  v-bind="renderer"
-                  @item-selected="onItemSelected"
-                />
-              </div>
-            </template>
+          <div class="col-4"></div>
+          <div class="col-4 row justify-center">
+            <KScrollDown
+              v-if="scrollDown"
+              :ref="scrollDownRefCreated"
+              target="scroll-target"
+              :loading="loadDoneFunction ? true : false" 
+            />
           </div>
-          <template v-slot:loading>
-            <div class="text-center q-my-md">
-              <q-spinner-dots
-                color="primary"
-                size="40px"
-              />
-            </div>
-          </template>
-        </q-infinite-scroll>
+          <div class="col-4 row justify-end">
+            <KScrollToTop
+              v-if="scrollToTop"
+              :ref="scrollToTopRefCreated"
+              target="scroll-target"
+            />
+          </div>
+        </div>
       </div>
       <!-- Paginated mode -->
       <div v-else class="row">
@@ -97,10 +112,12 @@
 </template>
 
 <script setup>
-import { computed, watch, toRefs, onBeforeMount, onBeforeUnmount } from 'vue'
+import { ref, computed, watch, toRefs, onBeforeMount, onBeforeUnmount } from 'vue'
 import { useCollection } from '../../composables'
 import { Events } from '../../events.js'
 import { loadComponent } from '../../utils'
+import KScrollToTop from './KScrollToTop.vue'
+import KScrollDown from './KScrollDown.vue'
 import KStamp from '../KStamp.vue'
 import KPanel from '../KPanel.vue'
 
@@ -146,6 +163,14 @@ const props = defineProps({
     type: String,
     default: 'smart'
   },
+  scrollDown: {
+    type: Boolean,
+    default: true
+  },
+  scrollToTop: {
+    type: Boolean,
+    default: true
+  },
   header: {
     type: [Array, Object],
     default: () => null
@@ -169,7 +194,10 @@ const emit = defineEmits(['collection-refreshed', 'selection-changed'])
 
 // Data
 const { items, nbTotalItems, nbPages, currentPage, refreshCollection, resetCollection } = useCollection(toRefs(props))
-let loadDoneFunction = null
+const scrollTargetRef = ref(null)
+const scrollDownRef = ref(null)
+const scrollToTopRef = ref(null)
+const loadDoneFunction = ref(null)
 
 // Computed
 const itemRenderer = computed(() => {
@@ -183,10 +211,22 @@ const rendererClass = computed(() => {
 watch(items, onCollectionRefreshed)
 
 // Functions
+function scrollDownRefCreated (instance) {
+  scrollDownRef.value = instance
+  if (instance) instance.refresh()
+}
+function scrollToTopRefCreated (instance) {
+  scrollToTopRef.value = instance
+  if (instance) instance.refresh()
+}
+function onScroll () {
+  if (scrollDownRef.value) scrollDownRef.value.refresh()
+  if (scrollToTopRef.value) scrollToTopRef.value.refresh()
+}
 function onLoad (index, done) {
   currentPage.value = index
   refreshCollection()
-  loadDoneFunction = done
+  loadDoneFunction.value = done
 }
 function onItemSelected (item, section) {
   emit('selection-changed', item, section)
@@ -194,9 +234,12 @@ function onItemSelected (item, section) {
 function onCollectionRefreshed () {
   emit('collection-refreshed', items.value)
   // call done callback if needed
-  if (loadDoneFunction) {
-    loadDoneFunction(items.value.length === nbTotalItems.value)
-    loadDoneFunction = null
+  if (loadDoneFunction.value) {
+    loadDoneFunction.value(items.value.length === nbTotalItems.value)
+    loadDoneFunction.value = null
+    // refresh scroll elements
+    if (scrollDownRef.value) scrollDownRef.value.refresh()
+    if (scrollToTopRef.value) scrollToTopRef.value.refresh()    
   }
 }
 
diff --git a/core/client/components/collection/KScrollDown.vue b/core/client/components/collection/KScrollDown.vue
index b7bb179ba..2a62f0132 100644
--- a/core/client/components/collection/KScrollDown.vue
+++ b/core/client/components/collection/KScrollDown.vue
@@ -17,8 +17,8 @@
 </template>
 
 <script setup>
-import { ref, watch, nextTick } from 'vue'
-import { scroll } from 'quasar'
+import { ref, watch } from 'vue'
+import { useQuasar, scroll } from 'quasar'
 import { clamp } from '../../utils'
 
 // Props
@@ -46,9 +46,15 @@ const props = defineProps({
 })
 
 // Data
+const $q = useQuasar()
 const { setVerticalScrollPosition, getVerticalScrollPosition, getScrollHeight } = scroll
 const isVisible = ref(false)
 
+// Watch
+watch(() => [$q.screen.width, $q.screen.height], () => {
+  refresh()
+})
+
 // Functions
 function refresh () {
   let targetElement = document.getElementById(props.target)
diff --git a/core/client/components/collection/KScrollToTop.vue b/core/client/components/collection/KScrollToTop.vue
index 9ec9b3256..0ec34e0cb 100644
--- a/core/client/components/collection/KScrollToTop.vue
+++ b/core/client/components/collection/KScrollToTop.vue
@@ -12,8 +12,8 @@
 </template>
 
 <script setup>
-import { ref } from 'vue'
-import { scroll } from 'quasar'
+import { ref, watch } from 'vue'
+import { useQuasar, scroll } from 'quasar'
 
 // Props
 const props = defineProps({
@@ -36,9 +36,15 @@ const props = defineProps({
 })
 
 // Data
+const $q = useQuasar()
 const { setVerticalScrollPosition, getVerticalScrollPosition } = scroll
 const isVisible = ref(false)
 
+// Watch
+watch(() => [$q.screen.width, $q.screen.height], () => {
+  refresh()
+})
+
 // Functions
 function refresh () {
   const targetElement = document.getElementById(props.target)
diff --git a/core/client/components/collection/KTimeLine.vue b/core/client/components/collection/KTimeLine.vue
index 662977775..5242f617d 100644
--- a/core/client/components/collection/KTimeLine.vue
+++ b/core/client/components/collection/KTimeLine.vue
@@ -109,7 +109,10 @@
     <!--
       Scroll 
      -->
-    <div v-if="scrollTargetRef" class="q-px-sm row items-center">
+    <div v-if="scrollTargetRef" 
+      :class="$q.screen.lt.md ? 'q-px-sm' : 'q-px-md'"
+      class="row items-center"
+    >
       <div class="col-4"></div>
       <div class="col-4 row justify-center">
         <KScrollDown
@@ -319,7 +322,7 @@ function onCollectionRefreshed () {
   })
   // call done callback if needed
   if (loadDoneFunction.value) {
-    loadDoneFunction.value( items.value.length === nbTotalItems.value)
+    loadDoneFunction.value(items.value.length === nbTotalItems.value)
     loadDoneFunction.value = null
     // refresh scroll elements
     if (scrollDownRef.value) scrollDownRef.value.refresh()