81 lines
2.9 KiB
JavaScript
81 lines
2.9 KiB
JavaScript
'use strict';
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const events = require('../events.js');
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const misc = require('../util/misc.js');
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const views = require('../util/views.js');
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function removeConsecutiveDuplicates(a) {
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return a.filter((item, pos, ary) => {
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return !pos || item != ary[pos - 1];
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});
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}
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class ManualPageView {
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constructor() {
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this.holderTemplate = views.getTemplate('manual-pager');
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this.navTemplate = views.getTemplate('manual-pager-nav');
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}
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render(ctx) {
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const target = document.getElementById('content-holder');
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const source = this.holderTemplate();
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const pageContentHolder = source.querySelector('.page-content-holder');
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const pageNav = source.querySelector('.page-nav');
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ctx.requestPage(ctx.initialPage).then(response => {
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let pageRendererCtx = response;
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pageRendererCtx.target = pageContentHolder;
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ctx.pageRenderer.render(pageRendererCtx);
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const totalPages = Math.ceil(response.total / response.pageSize);
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const threshold = 2;
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let pagesVisible = [];
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for (let i = 1; i <= threshold; i++) {
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pagesVisible.push(i);
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}
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for (let i = totalPages - threshold; i <= totalPages; i++) {
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pagesVisible.push(i);
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}
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for (let i = ctx.initialPage - threshold;
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i <= ctx.initialPage + threshold;
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i++) {
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pagesVisible.push(i);
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}
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pagesVisible = pagesVisible.filter((item, pos, ary) => {
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return item >= 1 && item <= totalPages;
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});
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pagesVisible = pagesVisible.sort((a, b) => { return a - b; });
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pagesVisible = removeConsecutiveDuplicates(pagesVisible);
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const pages = [];
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let lastPage = 0;
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for (let page of pagesVisible) {
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if (page !== lastPage + 1) {
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pages.push({ellipsis: true});
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}
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pages.push({
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number: page,
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link: ctx.clientUrl.format({page: page}),
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active: ctx.initialPage === page,
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});
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lastPage = page;
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}
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views.showView(pageNav, this.navTemplate({
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prevLink: ctx.clientUrl.format({page: ctx.initialPage - 1}),
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nextLink: ctx.clientUrl.format({page: ctx.initialPage + 1}),
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prevLinkActive: ctx.initialPage > 1,
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nextLinkActive: ctx.initialPage < totalPages,
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pages: pages,
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}));
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views.listenToMessages(target);
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views.showView(target, source);
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}, response => {
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views.listenToMessages(target);
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views.showView(target, source);
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events.notify(events.Error, response.description);
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});
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}
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}
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module.exports = ManualPageView;
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