-const Clipboard = require("clipboard");
-const Code = require('../libs/code');
-
-let setupPageShow = window.setupPageShow = function (pageId) {
-
- Code.highlight();
-
- if (!pageId) return;
-
- // Set up pointer
- let $pointer = $('#pointer').detach();
- let pointerShowing = false;
- let $pointerInner = $pointer.children('div.pointer').first();
- let isSelection = false;
- let pointerModeLink = true;
- let pointerSectionId = '';
-
- // Select all contents on input click
- $pointer.on('click', 'input', event => {
- $(this).select();
- event.stopPropagation();
- });
-
- $pointer.on('click focus', event => {
- event.stopPropagation();
- });
-
- // Pointer mode toggle
- $pointer.on('click', 'span.icon', event => {
- event.stopPropagation();
- let $icon = $(event.currentTarget);
- pointerModeLink = !pointerModeLink;
- $icon.find('[data-icon="include"]').toggle(!pointerModeLink);
- $icon.find('[data-icon="link"]').toggle(pointerModeLink);
- updatePointerContent();
- });
-
- // Set up clipboard
- let clipboard = new Clipboard($pointer[0].querySelector('button'));
-
- // Hide pointer when clicking away
- $(document.body).find('*').on('click focus', event => {
- if (!pointerShowing || isSelection) return;
- $pointer.detach();
- pointerShowing = false;
- });
-
- function updatePointerContent() {
- let inputText = pointerModeLink ? window.baseUrl(`/link/${pageId}#${pointerSectionId}`) : `{{@${pageId}#${pointerSectionId}}}`;
- if (pointerModeLink && inputText.indexOf('http') !== 0) inputText = window.location.protocol + "//" + window.location.host + inputText;
-
- $pointer.find('input').val(inputText);
- }
-
- // Show pointer when selecting a single block of tagged content
- $('.page-content [id^="bkmrk"]').on('mouseup keyup', function (e) {
- e.stopPropagation();
- let selection = window.getSelection();
- if (selection.toString().length === 0) return;
-
- // Show pointer and set link
- let $elem = $(this);
- pointerSectionId = $elem.attr('id');
- updatePointerContent();
-
- $elem.before($pointer);
- $pointer.show();
- pointerShowing = true;
-
- // Set pointer to sit near mouse-up position
- let pointerLeftOffset = (e.pageX - $elem.offset().left - ($pointerInner.width() / 2));
- if (pointerLeftOffset < 0) pointerLeftOffset = 0;
- let pointerLeftOffsetPercent = (pointerLeftOffset / $elem.width()) * 100;
- $pointerInner.css('left', pointerLeftOffsetPercent + '%');
-
- isSelection = true;
- setTimeout(() => {
- isSelection = false;
- }, 100);
- });
-
- // Go to, and highlight if necessary, the specified text.
- function goToText(text) {
- let idElem = document.getElementById(text);
- $('.page-content [data-highlighted]').attr('data-highlighted', '').css('background-color', '');
- if (idElem !== null) {
- window.scrollAndHighlight(idElem);
- } else {
- $('.page-content').find(':contains("' + text + '")').smoothScrollTo();
- }
- }
-
- // Check the hash on load
- if (window.location.hash) {
- let text = window.location.hash.replace(/\%20/g, ' ').substr(1);
- goToText(text);
- }
-
- // Sidebar page nav click event
- $('.sidebar-page-nav').on('click', 'a', event => {
- goToText(event.target.getAttribute('href').substr(1));
- });
-
- // Make the sidebar stick in view on scroll
- let $window = $(window);
- let $sidebar = $("#sidebar .scroll-body");
- let $bookTreeParent = $sidebar.parent();
-
- // Check the page is scrollable and the content is taller than the tree
- let pageScrollable = ($(document).height() > $window.height()) && ($sidebar.height() < $('.page-content').height());
-
- // Get current tree's width and header height
- let headerHeight = $("#header").height() + $(".toolbar").height();
- let isFixed = $window.scrollTop() > headerHeight;
-
- // Fix the tree as a sidebar
- function stickTree() {
- $sidebar.width($bookTreeParent.width() + 15);
- $sidebar.addClass("fixed");
- isFixed = true;
- }
-
- // Un-fix the tree back into position
- function unstickTree() {
- $sidebar.css('width', 'auto');
- $sidebar.removeClass("fixed");
- isFixed = false;
- }
-
- // Checks if the tree stickiness state should change
- function checkTreeStickiness(skipCheck) {
- let shouldBeFixed = $window.scrollTop() > headerHeight;
- if (shouldBeFixed && (!isFixed || skipCheck)) {
- stickTree();
- } else if (!shouldBeFixed && (isFixed || skipCheck)) {
- unstickTree();
- }
- }
- // The event ran when the window scrolls
- function windowScrollEvent() {
- checkTreeStickiness(false);
- }
-
- // If the page is scrollable and the window is wide enough listen to scroll events
- // and evaluate tree stickiness.
- if (pageScrollable && $window.width() > 1000) {
- $window.on('scroll', windowScrollEvent);
- checkTreeStickiness(true);
- }
-
- // Handle window resizing and switch between desktop/mobile views
- $window.on('resize', event => {
- if (pageScrollable && $window.width() > 1000) {
- $window.on('scroll', windowScrollEvent);
- checkTreeStickiness(true);
- } else {
- $window.off('scroll', windowScrollEvent);
- unstickTree();
- }
- });
-
-
- // Check if support is present for IntersectionObserver
- if ('IntersectionObserver' in window &&
- 'IntersectionObserverEntry' in window &&
- 'intersectionRatio' in window.IntersectionObserverEntry.prototype) {
- addPageHighlighting();
- }
-
- function addPageHighlighting() {
- let pageNav = document.querySelector('.sidebar-page-nav');
-
- // fetch all the headings.
- let headings = document.querySelector('.page-content').querySelectorAll('h1, h2, h3, h4, h5, h6');
- // if headings are present, add observers.
- if (headings.length > 0 && pageNav !== null) {
- addNavObserver(headings);
- }
-
- function addNavObserver(headings) {
- // Setup the intersection observer.
- let intersectOpts = {
- rootMargin: '0px 0px 0px 0px',
- threshold: 1.0
- };
- let pageNavObserver = new IntersectionObserver(headingVisibilityChange, intersectOpts);
-
- // observe each heading
- for (let i = 0; i !== headings.length; ++i) {
- pageNavObserver.observe(headings[i]);
- }
- }
-
- function headingVisibilityChange(entries, observer) {
- for (let i = 0; i < entries.length; i++) {
- let currentEntry = entries[i];
- let isVisible = (currentEntry.intersectionRatio === 1);
- toggleAnchorHighlighting(currentEntry.target.id, isVisible);
- }
- }
-
- function toggleAnchorHighlighting(elementId, shouldHighlight) {
- let anchorsToHighlight = pageNav.querySelectorAll('a[href="#' + elementId + '"]');
- for (let i = 0; i < anchorsToHighlight.length; i++) {
- // Change below to use classList.toggle when IE support is dropped.
- if (shouldHighlight) {
- anchorsToHighlight[i].classList.add('current-heading');
- } else {
- anchorsToHighlight[i].classList.remove('current-heading');
- }
- }
- }
- }
-};
-
-module.exports = setupPageShow;
\ No newline at end of file