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Select texts insider links, for firefox
// ==UserScript==
// @name Select like opera
// @namespace lkytal
// @author lkytal
// @homepage http://lkytal.github.io/
// @icon http://lkytal.qiniudn.com/ic.ico
// @version 1.1.0
// @description Select texts insider links, for firefox
// @include *
// @grant unsafeWindow
// @grant GM_getValue
// @grant GM_setValue
// @homepageURL https://git.oschina.net/coldfire/GM
// ==/UserScript==
selectLikeOpera = function() {
var findHTMLAchor = function(a) {
if (a.nodeType === 3) a = a.parentNode;
do {
if (a.constructor === HTMLAnchorElement) return a;
} while ((a = a.parentNode) && a !== document.body);
return null;
};
var preventEvent = function(e) {
e.preventDefault();
e.stopPropagation();
return false;
};
var rangeOperator = (function() {
var w = typeof InstallTrigger === 'undefined';
return {
createRange: function(x, y) {
if (w) {
return document.caretRangeFromPoint(x, y)
}
else
{
var a = document.createRange();
var p = document.caretPositionFromPoint(x, y);
a.setStart(p.offsetNode, p.offset);
return a;
}
return null;
},
rangeAttr: ((w ? '-webkit-' : '-moz-') + 'user-select')
}
})();
var j = (function() {
var o = [{
p: rangeOperator.rangeAttr,
v: 'text'
}, {
p: 'outline-width',
v: 0
}];
var n;
var s;
return function(a) {
if (a) {
n = a, s = [];
for (var i = o.length - 1; i >= 0; i -= 1) {
s.push([n.style.getPropertyValue(o[i].p), n.style.getPropertyPriority(o[i].p)]);
n.style.setProperty(o[i].p, o[i].v, 'important');
}
}
else if (n)
{
for (var i = o.length; i-- > 0;) {
n.style.removeProperty(o[i].p);
if (s[i][0] !== null) n.style.setProperty(o[i].p, s[i][0], s[i][1]);
}
n = s = null
}
}
})();
var toggleEvent = function(events, bAdd) {
if (bAdd === undefined) bAdd = true;
if (events.constructor !== Array) events = [events];
for (var i = 0, len = events.length; i < len; i += 1)
{
if (bAdd)
{
document.addEventListener(events[i], eventList[events[i]], true);
}
else
{
document.removeEventListener(events[i], eventList[events[i]], true);
}
}
};
var removeEvent = function(a) {
toggleEvent(a, false);
};
var m, q, u, v, z, A = function() {
q = v = true;
u = z = false;
};
var B, selected = document.getSelection();
selectEvent = function(e) {
if (e.which < 2) {
A();
var x = e.clientX,
y = e.clientY;
if (selected.rangeCount > 0) {
var a = selected.getRangeAt(0);
if (!a.collapsed) {
var r = rangeOperator.createRange(x, y);
if (r && a.isPointInRange(r.startContainer, r.startOffset)) return;
}
}
j();
var t = e.target,
n = findHTMLAchor(t);
if (!n) n = t.nodeType !== 3 ? t : t.parentNode;
if (n.constructor === HTMLCanvasElement || n.textContent === '') return;
var r = n.getBoundingClientRect();
B = {
n: n,
x: Math.round(r.left),
y: Math.round(r.top),
c: 0
};
m = {
x: x,
y: y
};
toggleEvent(['mousemove', 'mouseup', 'dragend', 'dragstart']);
j(n);
}
};
var D = 3,
K = 0.8,
eventList = {
'mousemove': function(e) {
if (B) {
if (B.c++ < 12) {
var r = B.n.getBoundingClientRect();
if (Math.round(r.left) !== B.x || Math.round(r.top) !== B.y) {
removeEvent(['mousemove', 'mouseup', 'dragend', 'dragstart', 'click']);
j();
selected.removeAllRanges();
return;
}
} else {
B = null;
}
}
var x = e.clientX,
y = e.clientY;
if (v) {
selected.removeAllRanges();
var a = x > m.x ? -2 : 2;
var b = rangeOperator.createRange(x + a, y);
if (b) {
selected.addRange(b);
v = false;
}
}
if (q) {
var c = Math.abs(m.x - x),
d = Math.abs(m.y - y);
u = d === 0 || c / d > K;
if (c > D || d > D) {
q = false;
z = true;
toggleEvent('click');
}
}
if (u) {
var b = rangeOperator.createRange(x, y);
if (b) selected.extend(b.startContainer, b.startOffset);
}
},
'dragstart': function(e) {
removeEvent('dragstart');
if (u) return preventEvent(e);
},
'mouseup': function(e) {
removeEvent(['mousemove', 'mouseup', 'dragstart', 'dragend']);
if (!u && z) z = false;
setTimeout(function() {
removeEvent('click');
}, 111);
},
'dragend': function(e) {
removeEvent(['dragend', 'mousemove', 'mouseup']);
},
'click': function(e) {
removeEvent('click');
if (z) return preventEvent(e);
}
};
document.addEventListener('mousedown', selectEvent, true);
};
setTimeout(selectLikeOpera, 300);
