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/**
* Bubble Helper Class
*
* example usage
* Bubble.init("externalURL", function (D) {
* return D.href + '<br /><img src="easy-coding-logo.png">';
* });
*
* @author Torben Brodt <easy-coding.de>
* @url http://trac.easy-coding.de/trac/wcf/wiki/Thumbshots
* @license GNU Lesser General Public License <http://opensource.org/licenses/lgpl-3.0.html>
*/
var Bubble = {
Cursor: {
x: 0,
y: 0
},
Offset: {
x: 0,
y: 0
},
blacklist : {},
div: document.getElementById("BubbleDiv"),
init: function (ParentID, showRef) {
Bubble.create();
Bubble.addEvent(window, "mousemove", Bubble.getCurPos);
Bubble.addEvent(window, "resize", Bubble.getOffset);
Bubble.addEvent(window, "scroll", Bubble.getOffset);
var B = Bubble.getElementsByClassName(ParentID), A = B.length;
for (i = 0; i < A; i++) {
if(Bubble.blacklist.href && !B[i].href.match(Bubble.blacklist.href)) {
Bubble.addEvent(B[i], "mouseover", function () {
Bubble.show(this, showRef);
});
Bubble.addEvent(B[i], "mouseout", function () {
Bubble.hide();
});
}
}
},
/**
* currently only href is supported
*/
disallow: function (attr, str) {
Bubble.blacklist.href = str;
},
show: function (D, showRef) {
Bubble.div.style.display = "block";
Bubble.div.innerHTML = showRef(D);
Bubble.getCurPos();
Bubble.getOffset();
Bubble.div.style.left = (Bubble.Cursor.x + Bubble.Offset.x) + "px";
Bubble.div.style.top = (Bubble.Cursor.y + Bubble.Offset.y) + "px";
},
hide: function () {
Bubble.div.innerHTML = "";
Bubble.div.style.display = "none";
},
create: function () {
Bubble.div = document.createElement("div");
Bubble.div.id = "BubbleDiv";
document.getElementsByTagName("body")[0].appendChild(Bubble.div);
Bubble.div.style.position = 'absolute';
},
getOffset: function () {
var Px = 10, Py = 20;
var Cx = Bubble.Cursor.x, Cy = Bubble.Cursor.y;
var w = Bubble.div.clientWidth || 150, h = Bubble.div.clientHeight || 150;
var Ww, Wh, Wx, Wy;
var E = window;
if (typeof(E.innerWidth) === "number") {
Ww = E.innerWidth;
Wh = E.innerHeight;
Wx = E.pageXOffset;
Wy = E.pageYOffset;
} else if (document.documentElement) {
F = document.documentElement;
if (F.clientWidth || F.clientHeight) {
Ww = F.clientWidth;
Wh = F.clientHeight;
Wx = F.scrollLeft;
Wy = F.scrollTop;
}
}
// top right
if ((Cx - Wx) > (Ww / 2) && (Cy - Wy) < h) {
Px = -w - Px;
}
// bottom left
else if ((Cx - Wx) < (Ww / 2) && (Cy - Wy) > (Wh / 2)) {
Py = -h - Py;
}
// bottom right
else if ((Cx - Wx) > (Ww / 2) && (Cy - Wy) > (Wh / 2)) {
Px = -w - Px;
Py = -h - Py;
}
Bubble.Offset = {
x: Px,
y: Py
};
},
getCurPos: function (C) {
C = C ? C : window.event;
if (C && typeof(C.pageX) !== "number" && typeof(C.clientX) === "number") {
C.pageX = C.clientX;
C.pageY = C.clientY;
if (document.body && (document.body.scrollLeft || document.body.scrollTop)) {
C.pageX += document.body.scrollLeft;
C.pageY += document.body.scrollTop;
} else if (document.documentElement && (document.documentElement.scrollLeft || document.documentElement.scrollTop)) {
C.pageX += document.documentElement.scrollLeft;
C.pageY += document.documentElement.scrollTop;
}
}
if(C) {
Bubble.Cursor = {
x: C.pageX,
y: C.pageY
};
}
},
addEvent: function( obj, type, fn ) {
if ( window.addEventListener ) {
obj.addEventListener( type, fn, false );
} else {
obj['e'+type+fn] = fn;
obj[type+fn] = function() {
obj['e'+type+fn]( window.event );
};
obj.attachEvent( 'on'+type, obj[type+fn] );
}
},
getElementsByClassName: function (searchClass) {
var classElements = [], i, j, els, pattern;
els = document.getElementsByTagName('*');
pattern = new RegExp("(^|\\s)" + searchClass + "(\\s|$)");
for (i = 0, j = 0; i < els.length; i += 1) {
if (pattern.test(els[i].className)) {
classElements[j] = els[i];
j += 1;
}
}
return classElements;
}
};
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