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htdocs/ViewUserLookup.vue

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+<template>
+	<div v-if="label" class="input-group">
+		<span class="input-group-text">{{label}}</span>
+		<input class="form-control" placeholder="Filter..." v-model="x_query" />
+	</div>
+	<input v-else class="form-control" placeholder="Filter..." v-model="x_query" />
+	<div class="scroller" ref="scroller">
+		<table class="table table-striped">
+			<tbody>
+				<tr v-for="item in resultset" :class="{ 'table-active': item.DUZ == x_modelValue }" @click="x_modelValue = item.DUZ">
+					<td>{{item.name}}</td>
+					<td>{{item.description.replace(/^-\s*/g, '')}}</td>
+					<td style="text-align: right;">#{{item.DUZ}}</td>
+				</tr>
+				<tr ref="bottom" />
+			</tbody>
+		</table>
+	</div>
+</template>
+
+<style scoped>
+	div.scroller {
+		max-height: 25vh;
+		overflow-y: auto;
+	}
+	td {
+		cursor: default;
+	}
+	.table-active, .table-active:nth-of-type(odd) > * {
+		color: #fff;
+		background-color: #0d6efd;
+	}
+</style>
+
+<script>
+	import { debounce } from './util.mjs';
+
+	export default {
+		props: {
+			client: Object,
+			label: String,
+			query: String,
+			modelValue: String
+		},
+		emits: {
+			'update:query': String,
+			'update:modelValue': String
+		},
+		data() {
+			return {
+				resultset: [],
+				has_more: false,
+				is_loading: true,
+				observer_bottom: null,
+				x_query: this.query,
+				x_modelValue: this.modelValue
+			};
+		},
+		computed: {
+			query_view() {
+				return this.x_query ? this.x_query.replace(/^\s+|\s+$/g, '').replace(/\s+/g, ' ').toUpperCase() : '';
+			}
+		},
+		watch: {
+			modelValue(value) { this.x_modelValue = value; },
+			x_modelValue(value) { this.$emit('update:modelValue', value); },
+			query(value) { this.x_query = value; },
+			x_query(value) { this.$emit('update:query', value); }
+		},
+		methods: {
+			async set_default() {
+				if(this.x_modelValue) return;
+				var userinfo = await this.client.XUS_GET_USER_INFO();
+				this.x_modelValue = userinfo[0];
+				this.x_query = userinfo[1]
+			},
+			async handle_bottom([entry]) {
+				if((entry.isIntersecting) && (this.has_more) && (!this.is_loading)) {
+					this.is_loading = true;
+					this.has_more = false;
+					try {
+						var batch = await this.client.ORWU_NEWPERS(this.resultset[this.resultset.length - 1].name, 1, '', '', '', '', '', '', 0);
+						if(this.query_view.length >= 1) batch = batch.filter(x => x.name.toUpperCase().startsWith(this.query_view));
+						if(batch.length > 0) {
+							Array.prototype.push.apply(this.resultset, batch);
+							this.has_more = true;
+						} else this.has_more = false;
+					} catch(ex) {
+						this.has_more = false;
+					} finally {
+						this.is_loading = false;
+					}
+				}
+			}
+		},
+		created() {
+			this.$watch(
+				() => (this.client, this.query_view, {}),
+				debounce(async function() {
+					if(this.client) {
+						this.is_loading = true;
+						this.has_more = false;
+						try {
+							var query = this.query_view;
+							if(query.length >= 1) {
+								var batch = await this.client.ORWU_NEWPERS(query.slice(0, -1) + String.fromCharCode(query.charCodeAt(query.length - 1) - 1) + '~', 1, '', '', '', '', '', '', 0);
+								this.resultset = batch.filter(x => x.name.toUpperCase().startsWith(query));
+							} else this.resultset = await this.client.ORWU_NEWPERS('', 1, '', '', '', '', '', '', 0);
+							this.has_more = this.resultset.length > 0;
+						} catch(ex) {
+							this.resultset = [];
+							this.has_more = false;
+						} finally {
+							this.is_loading = false;
+							if(this.$refs.scroller) this.$refs.scroller.scrollTo(0, 0);
+						}
+					}
+				}, 500),
+				{ immediate: true }
+			);
+			this.set_default();
+		},
+		mounted() {
+			this.observer_bottom = new IntersectionObserver(this.handle_bottom, { root: this.$refs.scroller, rootMargin: '25%' });
+			this.observer_bottom.observe(this.$refs.bottom);
+		},
+		destroyed() {
+			if(this.observer_bottom) this.observer_bottom.disconnect();
+		}
+	};
+</script>