Keyboard navigation
当前为
// ==UserScript==
// @name Keyboard navigator
// @version 1.6
// @description Keyboard navigation
// @author badook
// @include http*://*
// @grant GM_openInTab
// @require https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js
// @namespace https://greasyfork.org/users/240988
// ==/UserScript==
'use strict';
var jq = $.noConflict();
//var bgcolor = "#EBF2FF";
var bgcolor = 'rgba(0, 0, 0, 0.2)';
var util = {
q: function(query, context) {
return (context || document).querySelector(query);
},
qq: function(query, context) {
return [].slice.call((context || document).querySelectorAll(query));
}
};
var i = 0;
var isGoogleSearch = /^(http|https):\/\/(www.)?google.(com|co.uk|it)\/search\?/.test(location.href);
var isPageScrollEnabled = true;
if ( isGoogleSearch ) {
console.log("It's a google search page");
var searchBox = jq('input[name="q"]').first();
var prevPage = document.getElementById("pnprev");
var nextPage = document.getElementById("pnnext");
var results = util.qq('#rso div.g', document.body);
if(results.length) {
results[i].style.backgroundColor = bgcolor;
jq(results).click(function() {
results[i].style.backgroundColor = "transparent";
i = results.indexOf(jq(this).get(0));
jq(this).get(0).style.backgroundColor = bgcolor;
});
}
}
document.onkeypress = function(e) {
console.log(e.keyCode);
if ( !shouldScroll(e) ) {
return;
}
switch(e.keyCode) {
case 97: // a
setTimeout(function(){ // Dont put current letter in input
searchBox.focus();
searchBox.value = searchBox.value; // Cursor to end
}, 0);
return;
case 13: // enter
case 100: // d
var url = jq('a',jq(results[i])).attr('href');
console.log(url);
GM_openInTab(url, true);
return;
case 68: // D
GM_openInTab(util.q('a', results[i]).href, false);
return;
case 113: // q
prevPage.click();
return;
case 101: // e
nextPage.click();
return;
case 87: // W
// if (isPageScrollEnabled)
window.scrollBy(0, -100);
return;
case 83: // S
// if (isPageScrollEnabled)
console.log("scroll")
window.scrollBy(0, 100);
return;
case 119: // w
if(i > 0)
results[i--].style.backgroundColor = "transparent";
break;
case 115: // s
if(i < results.length - 1)
results[i++].style.backgroundColor = "transparent";
break;
default:
return;
}
results[i].style.backgroundColor = bgcolor;
scrollToElement(results[i]);
};
function scrollToElement(el) {
var elOffset = jq(el).offset().top;
var elHeight = jq(el).height();
var windowHeight = jq(window).height();
var offset;
if (elHeight < windowHeight)
offset = elOffset - ((windowHeight / 2) - (elHeight / 2));
else
offset = elOffset;
jq('html, body').animate({scrollTop:offset}, 0);
}
function shouldScroll(event, direction) {
if (event.target.isContentEditable) {
return false;
}
if (event.target.type === 'application/x-shockwave-flash') {
return false;
}
if (event.defaultPrevented) {
return false;
}
if (/button|input|textarea|select|embed|object/i.test(event.target.nodeName)) {
return false;
}
if (event.metaKey === true) {
return false;
}
if (!document.hasFocus()) {
return false;
}
if (document.domain === 'mail.google.com') {
if (window.location.hash.indexOf('/') === -1) {
return false;
} else if (!(event.keyCode in keyMaps.arrows)) {
return false;
}
}
/*
if (!window.scrollTargetY) {
findScrollTargets(event, 'y');
if (!window.scrollTargetY) {
return false;
}
}
*/
if (!scrollable(window.scrollTargetY, 'y')) {
return false;
}
return true;
};
findScrollTargets = function(event, axis) {
var scrollableParentX, scrollableParentY, target;
if (event == null) {
event = null;
}
if (axis == null) {
axis = 'both';
}
if (!event || document.activeElement === !document.body) {
target = document.activeElement;
} else {
target = event.target || event.srcElement;
target = target.nodeType === 1 ? target : target.parentNode;
}
if (axis === 'y' || axis === 'both') {
scrollableParentY = findScrollableParent(target, 'y');
if (scrollableParentY) {
window.scrollTargetY = scrollableParentY;
}
}
if (axis === 'x' || axis === 'both') {
scrollableParentX = findScrollableParent(target, 'x');
if (scrollableParentX) {
return window.scrollTargetX = scrollableParentX;
}
}
};
findScrollableParent = function(element, axis) {
while (true) {
if (scrollable(element, axis)) {
return element;
} else {
element = element.parentElement;
}
}
};
scrollable = function(element, axis) {
var initialPosition, scrollAxis, scrollVariation;
scrollAxis = axis === 'y' ? 'scrollTop' : 'scrollLeft';
if (!element) {
return true;
} else if (/button|input|textarea|select|embed|object/i.test(element.nodeName)) {
return false;
} else if (element[scrollAxis] > 10) {
return true;
} else {
initialPosition = element[scrollAxis];
element[scrollAxis] = 10;
scrollVariation = element[scrollAxis];
element[scrollAxis] = initialPosition;
if (scrollVariation >= 10) {
return true;
}
}
return false;
};