mirror of https://github.com/searx/searx
367 lines
9.1 KiB
JavaScript
367 lines
9.1 KiB
JavaScript
searx.ready(function() {
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searx.on('.result', 'click', function() {
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highlightResult(this)(true);
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});
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searx.on('.result a', 'focus', function(e) {
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var el = e.target;
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while (el !== undefined) {
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if (el.classList.contains('result')) {
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if (el.getAttribute("data-vim-selected") === null) {
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highlightResult(el)(true);
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}
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break;
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}
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el = el.parentNode;
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}
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}, true);
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var vimKeys = {
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27: {
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key: 'Escape',
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fun: removeFocus,
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des: 'remove focus from the focused input',
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cat: 'Control'
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},
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73: {
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key: 'i',
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fun: searchInputFocus,
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des: 'focus on the search input',
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cat: 'Control'
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},
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66: {
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key: 'b',
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fun: scrollPage(-window.innerHeight),
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des: 'scroll one page up',
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cat: 'Navigation'
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},
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70: {
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key: 'f',
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fun: scrollPage(window.innerHeight),
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des: 'scroll one page down',
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cat: 'Navigation'
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},
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85: {
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key: 'u',
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fun: scrollPage(-window.innerHeight / 2),
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des: 'scroll half a page up',
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cat: 'Navigation'
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},
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68: {
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key: 'd',
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fun: scrollPage(window.innerHeight / 2),
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des: 'scroll half a page down',
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cat: 'Navigation'
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},
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71: {
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key: 'g',
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fun: scrollPageTo(-document.body.scrollHeight, 'top'),
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des: 'scroll to the top of the page',
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cat: 'Navigation'
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},
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86: {
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key: 'v',
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fun: scrollPageTo(document.body.scrollHeight, 'bottom'),
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des: 'scroll to the bottom of the page',
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cat: 'Navigation'
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},
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75: {
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key: 'k',
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fun: highlightResult('up'),
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des: 'select previous search result',
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cat: 'Results'
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},
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74: {
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key: 'j',
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fun: highlightResult('down'),
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des: 'select next search result',
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cat: 'Results'
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},
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80: {
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key: 'p',
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fun: pageButtonClick(0),
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des: 'go to previous page',
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cat: 'Results'
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},
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78: {
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key: 'n',
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fun: pageButtonClick(1),
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des: 'go to next page',
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cat: 'Results'
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},
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79: {
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key: 'o',
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fun: openResult(false),
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des: 'open search result',
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cat: 'Results'
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},
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84: {
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key: 't',
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fun: openResult(true),
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des: 'open the result in a new tab',
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cat: 'Results'
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},
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82: {
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key: 'r',
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fun: reloadPage,
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des: 'reload page from the server',
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cat: 'Control'
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},
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72: {
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key: 'h',
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fun: toggleHelp,
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des: 'toggle help window',
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cat: 'Other'
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}
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};
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searx.on(document, "keydown", function(e) {
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// check for modifiers so we don't break browser's hotkeys
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if (vimKeys.hasOwnProperty(e.keyCode) && !e.ctrlKey && !e.altKey && !e.shiftKey && !e.metaKey) {
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var tagName = e.target.tagName.toLowerCase();
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if (e.keyCode === 27) {
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if (tagName === 'input' || tagName === 'select' || tagName === 'textarea') {
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vimKeys[e.keyCode].fun();
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}
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} else {
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if (e.target === document.body || tagName === 'a' || tagName === 'button') {
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e.preventDefault();
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vimKeys[e.keyCode].fun();
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}
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}
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}
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});
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function highlightResult(which) {
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return function(noScroll) {
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var current = document.querySelector('.result[data-vim-selected]'),
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effectiveWhich = which;
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if (current === null) {
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// no selection : choose the first one
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current = document.querySelector('.result');
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if (current === null) {
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// no first one : there are no results
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return;
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}
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// replace up/down actions by selecting first one
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if (which === "down" || which === "up") {
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effectiveWhich = current;
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}
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}
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var next, results = document.querySelectorAll('.result');
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if (typeof effectiveWhich !== 'string') {
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next = effectiveWhich;
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} else {
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switch (effectiveWhich) {
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case 'visible':
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var top = document.documentElement.scrollTop || document.body.scrollTop;
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var bot = top + document.documentElement.clientHeight;
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for (var i = 0; i < results.length; i++) {
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next = results[i];
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var etop = next.offsetTop;
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var ebot = etop + next.clientHeight;
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if ((ebot <= bot) && (etop > top)) {
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break;
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}
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}
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break;
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case 'down':
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next = current.nextElementSibling;
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if (next === null) {
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next = results[0];
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}
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break;
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case 'up':
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next = current.previousElementSibling;
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if (next === null) {
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next = results[results.length - 1];
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}
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break;
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case 'bottom':
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next = results[results.length - 1];
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break;
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case 'top':
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/* falls through */
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default:
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next = results[0];
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}
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}
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if (next) {
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current.removeAttribute('data-vim-selected');
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next.setAttribute('data-vim-selected', 'true');
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var link = next.querySelector('h3 a') || next.querySelector('a');
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if (link !== null) {
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link.focus();
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}
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if (!noScroll) {
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scrollPageToSelected();
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}
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}
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};
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}
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function reloadPage() {
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document.location.reload(true);
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}
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function removeFocus() {
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if (document.activeElement) {
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document.activeElement.blur();
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}
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}
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function pageButtonClick(num) {
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return function() {
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var buttons = $('div#pagination button[type="submit"]');
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if (buttons.length !== 2) {
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console.log('page navigation with this theme is not supported');
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return;
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}
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if (num >= 0 && num < buttons.length) {
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buttons[num].click();
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} else {
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console.log('pageButtonClick(): invalid argument');
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}
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};
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}
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function scrollPageToSelected() {
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var sel = document.querySelector('.result[data-vim-selected]');
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if (sel === null) {
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return;
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}
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var wtop = document.documentElement.scrollTop || document.body.scrollTop,
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wheight = document.documentElement.clientHeight,
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etop = sel.offsetTop,
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ebot = etop + sel.clientHeight,
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offset = 120;
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// first element ?
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if ((sel.previousElementSibling === null) && (ebot < wheight)) {
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// set to the top of page if the first element
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// is fully included in the viewport
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window.scroll(window.scrollX, 0);
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return;
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}
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if (wtop > (etop - offset)) {
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window.scroll(window.scrollX, etop - offset);
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} else {
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var wbot = wtop + wheight;
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if (wbot < (ebot + offset)) {
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window.scroll(window.scrollX, ebot - wheight + offset);
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}
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}
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}
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function scrollPage(amount) {
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return function() {
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window.scrollBy(0, amount);
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highlightResult('visible')();
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};
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}
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function scrollPageTo(position, nav) {
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return function() {
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window.scrollTo(0, position);
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highlightResult(nav)();
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};
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}
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function searchInputFocus() {
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window.scrollTo(0, 0);
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document.querySelector('#q').focus();
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}
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function openResult(newTab) {
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return function() {
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var link = document.querySelector('.result[data-vim-selected] h3 a');
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if (link !== null) {
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var url = link.getAttribute('href');
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if (newTab) {
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window.open(url);
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} else {
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window.location.href = url;
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}
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}
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};
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}
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function initHelpContent(divElement) {
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var categories = {};
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for (var k in vimKeys) {
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var key = vimKeys[k];
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categories[key.cat] = categories[key.cat] || [];
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categories[key.cat].push(key);
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}
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var sorted = Object.keys(categories).sort(function(a, b) {
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return categories[b].length - categories[a].length;
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});
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if (sorted.length === 0) {
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return;
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}
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var html = '<a href="#" class="close" aria-label="close" title="close">×</a>';
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html += '<h3>How to navigate searx with Vim-like hotkeys</h3>';
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html += '<table>';
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for (var i = 0; i < sorted.length; i++) {
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var cat = categories[sorted[i]];
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var lastCategory = i === (sorted.length - 1);
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var first = i % 2 === 0;
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if (first) {
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html += '<tr>';
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}
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html += '<td>';
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html += '<h4>' + cat[0].cat + '</h4>';
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html += '<ul class="list-unstyled">';
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for (var cj in cat) {
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html += '<li><kbd>' + cat[cj].key + '</kbd> ' + cat[cj].des + '</li>';
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}
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html += '</ul>';
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html += '</td>'; // col-sm-*
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if (!first || lastCategory) {
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html += '</tr>'; // row
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}
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}
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html += '</table>';
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divElement.innerHTML = html;
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}
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function toggleHelp() {
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var helpPanel = document.querySelector('#vim-hotkeys-help');
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console.log(helpPanel);
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if (helpPanel === undefined || helpPanel === null) {
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// first call
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helpPanel = document.createElement('div');
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helpPanel.id = 'vim-hotkeys-help';
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helpPanel.className='dialog-modal';
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helpPanel.style='width: 40%';
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initHelpContent(helpPanel);
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var body = document.getElementsByTagName('body')[0];
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body.appendChild(helpPanel);
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} else {
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// togggle hidden
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helpPanel.classList.toggle('invisible');
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return;
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}
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}
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});
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