346 lines
9.7 KiB
JavaScript
346 lines
9.7 KiB
JavaScript
$(document).ready(function() {
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highlightResult('top')();
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$('.result').on('click', function() {
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highlightResult($(this))();
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});
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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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$(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)
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&& !e.ctrlKey
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&& !e.altKey
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&& !e.shiftKey
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&& !e.metaKey)
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{
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if (e.keyCode === 27) {
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if (e.target.tagName.toLowerCase() === 'input') {
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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) {
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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 nextResult(current, direction) {
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var next = current[direction]();
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while (!next.is('.result') && next.length !== 0) {
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next = next[direction]();
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}
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return next
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}
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function highlightResult(which) {
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return function() {
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var current = $('.result[data-vim-selected]');
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if (current.length === 0) {
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current = $('.result:first');
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if (current.length === 0) {
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return;
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}
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}
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var next;
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if (typeof which !== 'string') {
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next = which;
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} else {
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switch (which) {
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case 'visible':
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var top = $(window).scrollTop();
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var bot = top + $(window).height();
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var results = $('.result');
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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.offset().top;
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var ebot = etop + next.height();
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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 = nextResult(current, 'next');
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if (next.length === 0) {
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next = $('.result:first');
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}
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break;
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case 'up':
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next = nextResult(current, 'prev');
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if (next.length === 0) {
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next = $('.result:last');
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}
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break;
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case 'bottom':
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next = $('.result:last');
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break;
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case 'top':
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default:
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next = $('.result:first');
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}
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}
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if (next) {
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current.removeAttr('data-vim-selected').removeClass('well well-sm');
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next.attr('data-vim-selected', 'true').addClass('well well-sm');
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scrollPageToSelected();
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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(false);
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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 = $('.result[data-vim-selected]');
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if (sel.length !== 1) {
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return;
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}
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var wnd = $(window);
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var wtop = wnd.scrollTop();
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var etop = sel.offset().top;
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var offset = 30;
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if (wtop > etop) {
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wnd.scrollTop(etop - offset);
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} else {
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var ebot = etop + sel.height();
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var wbot = wtop + wnd.height();
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if (wbot < ebot) {
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wnd.scrollTop(ebot - wnd.height() + offset);
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}
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}
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}
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function scrollPage(amount) {
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return function() {
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window.scrollBy(0, amount);
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highlightResult('visible')();
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}
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}
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function scrollPageTo(position, nav) {
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return function() {
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window.scrollTo(0, position);
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highlightResult(nav)();
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}
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}
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function searchInputFocus() {
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$('input#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 = $('.result[data-vim-selected] .result_header a');
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if (link.length) {
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var url = link.attr('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 toggleHelp() {
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var helpPanel = $('#vim-hotkeys-help');
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if (helpPanel.length) {
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helpPanel.toggleClass('hidden');
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return;
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}
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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 = '<div id="vim-hotkeys-help" class="well vim-hotkeys-help">';
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html += '<div class="container-fluid">';
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html += '<div class="row">';
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html += '<div class="col-sm-12">';
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html += '<h3>How to navigate searx with Vim-like hotkeys</h3>';
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html += '</div>'; // col-sm-12
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html += '</div>'; // row
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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 += '<div class="row dflex">';
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}
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html += '<div class="col-sm-' + (first && lastCategory ? 12 : 6) + ' dflex">';
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html += '<div class="panel panel-default iflex">';
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html += '<div class="panel-heading">' + cat[0].cat + '</div>';
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html += '<div class="panel-body">';
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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 += '</div>'; // panel-body
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html += '</div>'; // panel
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html += '</div>'; // col-sm-*
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if (!first || lastCategory) {
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html += '</div>'; // row
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}
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}
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html += '</div>'; // container-fluid
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html += '</div>'; // vim-hotkeys-help
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$('body').append(html);
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}
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});
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