searxng/searx/static/plugins/js/vim_hotkeys.js

337 lines
9.5 KiB
JavaScript
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$(document).ready(function() {
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highlightResult('top')();
$('.result').on('click', function() {
highlightResult($(this))();
});
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var vimKeys = {
27: {
key: 'Escape',
fun: removeFocus,
des: 'remove focus from the focused input',
cat: 'Control'
},
73: {
key: 'i',
fun: searchInputFocus,
des: 'focus on the search input',
cat: 'Control'
},
66: {
key: 'b',
fun: scrollPage(-window.innerHeight),
des: 'scroll one page up',
cat: 'Navigation'
},
70: {
key: 'f',
fun: scrollPage(window.innerHeight),
des: 'scroll one page down',
cat: 'Navigation'
},
85: {
key: 'u',
fun: scrollPage(-window.innerHeight / 2),
des: 'scroll half a page up',
cat: 'Navigation'
},
68: {
key: 'd',
fun: scrollPage(window.innerHeight / 2),
des: 'scroll half a page down',
cat: 'Navigation'
},
71: {
key: 'g',
fun: scrollPageTo(-document.body.scrollHeight),
des: 'scroll to the top of the page',
cat: 'Navigation'
},
86: {
key: 'v',
fun: scrollPageTo(document.body.scrollHeight),
des: 'scroll to the bottom of the page',
cat: 'Navigation'
},
75: {
key: 'k',
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fun: highlightResult('up'),
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des: 'select previous search result',
cat: 'Results'
},
74: {
key: 'j',
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fun: highlightResult('down'),
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des: 'select next search result',
cat: 'Results'
},
80: {
key: 'p',
fun: pageButtonClick(0),
des: 'go to previous page',
cat: 'Results'
},
78: {
key: 'n',
fun: pageButtonClick(1),
des: 'go to next page',
cat: 'Results'
},
79: {
key: 'o',
fun: openResult(false),
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des: 'open search result',
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cat: 'Results'
},
84: {
key: 't',
fun: openResult(true),
des: 'open the result in a new tab',
cat: 'Results'
},
82: {
key: 'r',
fun: reloadPage,
des: 'reload page from the server',
cat: 'Control'
},
72: {
key: 'h',
fun: toggleHelp,
des: 'toggle help window',
cat: 'Other'
}
};
$(document).keyup(function(e) {
// check for modifiers so we don't break browser's hotkeys
if (vimKeys.hasOwnProperty(e.keyCode)
&& !e.ctrlKey
&& !e.altKey
&& !e.shiftKey
&& !e.metaKey)
{
if (e.keyCode === 27) {
if (e.target.tagName.toLowerCase() === 'input') {
vimKeys[e.keyCode].fun();
}
} else {
if (e.target === document.body) {
vimKeys[e.keyCode].fun();
}
}
}
});
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function highlightResult(which) {
return function() {
var current = $('.result[data-vim-selected]');
if (current.length === 0) {
current = $('.result:first');
if (current.length === 0) {
return;
}
}
var next;
if (typeof which !== 'string') {
next = which;
} else {
switch (which) {
case 'visible':
var top = $(window).scrollTop();
var bot = top + $(window).height();
var results = $('.result');
for (var i = 0; i < results.length; i++) {
next = $(results[i]);
var etop = next.offset().top;
var ebot = etop + next.height();
if ((ebot <= bot) && (etop > top)) {
break;
}
}
break;
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case 'down':
next = current.next('.result');
if (next.length === 0) {
next = $('.result:first');
}
break;
case 'up':
next = current.prev('.result');
if (next.length === 0) {
next = $('.result:last');
}
break;
case 'bottom':
next = $('.result:last');
break;
case 'top':
default:
next = $('.result:first');
}
}
if (next) {
current.removeAttr('data-vim-selected').removeClass('well well-sm');
next.attr('data-vim-selected', 'true').addClass('well well-sm');
scrollPageToSelected();
}
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}
}
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function reloadPage() {
document.location.reload(false);
}
function removeFocus() {
if (document.activeElement) {
document.activeElement.blur();
}
}
function pageButtonClick(num) {
return function() {
var buttons = $('div#pagination button[type="submit"]');
if (buttons.length !== 2) {
console.log('page navigation with this theme is not supported');
return;
}
if (num >= 0 && num < buttons.length) {
buttons[num].click();
} else {
console.log('pageButtonClick(): invalid argument');
}
}
}
function scrollPageToSelected() {
var sel = $('.result[data-vim-selected]');
if (sel.length !== 1) {
return;
}
var wnd = $(window);
var wtop = wnd.scrollTop();
var etop = sel.offset().top;
var offset = 30;
if (wtop > etop) {
wnd.scrollTop(etop - offset);
} else {
var ebot = etop + sel.height();
var wbot = wtop + wnd.height();
if (wbot < ebot) {
wnd.scrollTop(ebot - wnd.height() + offset);
}
}
}
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function scrollPage(amount) {
return function() {
window.scrollBy(0, amount);
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highlightResult('visible')();
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}
}
function scrollPageTo(position) {
return function() {
window.scrollTo(0, position);
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highlightResult('visible')();
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}
}
function searchInputFocus() {
$('input#q').focus();
}
function openResult(newTab) {
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return function() {
var link = $('.result[data-vim-selected] .result_header a');
if (link.length) {
var url = link.attr('href');
if (newTab) {
window.open(url);
} else {
window.location.href = url;
}
}
};
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}
function toggleHelp() {
var helpPanel = $('#vim-hotkeys-help');
if (helpPanel.length) {
helpPanel.toggleClass('hidden');
return;
}
var categories = {};
for (var k in vimKeys) {
var key = vimKeys[k];
categories[key.cat] = categories[key.cat] || [];
categories[key.cat].push(key);
}
var sorted = Object.keys(categories).sort(function(a, b) {
return categories[b].length - categories[a].length;
});
if (sorted.length === 0) {
return;
}
var html = '<div id="vim-hotkeys-help" class="well vim-hotkeys-help">';
html += '<div class="container-fluid">';
html += '<div class="row">';
html += '<div class="col-sm-12">';
html += '<h3>How to navigate searx with Vim-like hotkeys</h3>';
html += '</div>'; // col-sm-12
html += '</div>'; // row
for (var i = 0; i < sorted.length; i++) {
var cat = categories[sorted[i]];
var lastCategory = i === (sorted.length - 1);
var first = i % 2 === 0;
if (first) {
html += '<div class="row dflex">';
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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>';
html += '<div class="panel-body">';
html += '<ul class="list-unstyled">';
for (var cj in cat) {
html += '<li><kbd>' + cat[cj].key + '</kbd> ' + cat[cj].des + '</li>';
}
html += '</ul>';
html += '</div>'; // panel-body
html += '</div>'; // panel
html += '</div>'; // col-sm-*
if (!first || lastCategory) {
html += '</div>'; // row
}
}
html += '</div>'; // container-fluid
html += '</div>'; // vim-hotkeys-help
$('body').append(html);
}
});