138 lines
3.3 KiB
Vue
138 lines
3.3 KiB
Vue
<script>
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const PAGINATION_UI_BUTTON_LIMIT = 4;
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const UI_LIMIT = 6;
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const SPREAD = '...';
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const PREV = 'Prev';
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const NEXT = 'Next';
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const FIRST = '« First';
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const LAST = 'Last »';
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export default {
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props: {
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/**
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This function will take the information given by the pagination component
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Here is an example `change` method:
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change(pagenum) {
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gl.utils.visitUrl(`?page=${pagenum}`);
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},
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*/
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change: {
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type: Function,
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required: true,
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},
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/**
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pageInfo will come from the headers of the API call
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in the `.then` clause of the VueResource API call
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there should be a function that contructs the pageInfo for this component
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This is an example:
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const pageInfo = headers => ({
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perPage: +headers['X-Per-Page'],
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page: +headers['X-Page'],
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total: +headers['X-Total'],
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totalPages: +headers['X-Total-Pages'],
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nextPage: +headers['X-Next-Page'],
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previousPage: +headers['X-Prev-Page'],
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});
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*/
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pageInfo: {
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type: Object,
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required: true,
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},
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},
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methods: {
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changePage(e) {
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const text = e.target.innerText;
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const { totalPages, nextPage, previousPage } = this.pageInfo;
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switch (text) {
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case SPREAD:
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break;
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case LAST:
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this.change(totalPages);
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break;
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case NEXT:
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this.change(nextPage);
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break;
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case PREV:
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this.change(previousPage);
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break;
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case FIRST:
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this.change(1);
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break;
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default:
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this.change(+text);
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break;
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}
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},
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},
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computed: {
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prev() {
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return this.pageInfo.previousPage;
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},
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next() {
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return this.pageInfo.nextPage;
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},
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getItems() {
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const total = this.pageInfo.totalPages;
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const page = this.pageInfo.page;
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const items = [];
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if (page > 1) items.push({ title: FIRST });
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if (page > 1) {
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items.push({ title: PREV, prev: true });
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} else {
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items.push({ title: PREV, disabled: true, prev: true });
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}
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if (page > UI_LIMIT) items.push({ title: SPREAD, separator: true });
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const start = Math.max(page - PAGINATION_UI_BUTTON_LIMIT, 1);
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const end = Math.min(page + PAGINATION_UI_BUTTON_LIMIT, total);
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for (let i = start; i <= end; i += 1) {
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const isActive = i === page;
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items.push({ title: i, active: isActive, page: true });
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}
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if (total - page > PAGINATION_UI_BUTTON_LIMIT) {
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items.push({ title: SPREAD, separator: true, page: true });
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}
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if (page === total) {
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items.push({ title: NEXT, disabled: true, next: true });
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} else if (total - page >= 1) {
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items.push({ title: NEXT, next: true });
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}
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if (total - page >= 1) items.push({ title: LAST, last: true });
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return items;
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},
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},
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};
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</script>
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<template>
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<div class="gl-pagination">
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<ul class="pagination clearfix">
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<li
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v-for="item in getItems"
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:class="{
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page: item.page,
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prev: item.prev,
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next: item.next,
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separator: item.separator,
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active: item.active,
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disabled: item.disabled
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}">
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<a @click="changePage($event)">{{item.title}}</a>
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</li>
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</ul>
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</div>
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</template>
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