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# File 'lib/heatmap/rails/helper.rb', line 10
def save_heatmap(options = {})
click = options[:click] || Heatmap::Rails.options[:click]
move = options[:move] || Heatmap::Rails.options[:move]
scroll = options[:scroll] || Heatmap::Rails.options[:scroll]
html_element = options[:html_element] || Heatmap::Rails.options[:html_element]
html = ""
js = <<JS
<script type="text/javascript">
$( document ).ready(function() {
var move_array = [];
var scroll_array = [];
(function() {
document.onwheel = handleWheelMove;
function handleWheelMove(event) {
var dot, eventDoc, doc, body, offsetX, offsetY;
event = event || window.event;
if (event.offsetX == null && event.clientX != null) {
eventDoc = (event.target && event.target.ownerDocument) || document;
doc = eventDoc.documentElement;
body = eventDoc.body;
event.offsetX = event.clientX +
(doc && doc.scrollLeft || body && body.scrollLeft || 0) -
(doc && doc.clientLeft || body && body.clientLeft || 0);
event.offsetY = event.clientY +
(doc && doc.scrollTop || body && body.scrollTop || 0) -
(doc && doc.clientTop || body && body.clientTop || 0 );
}
var xpath_element = xpathstring(event);
var element_width = event.target.getBoundingClientRect().width;
var element_height= event.target.getBoundingClientRect().height;
offset_x_element = event.offsetX / element_width;
offset_y_element = event.offsetY / element_height;
var pageCoords = { path: "#{exact_route}", type: 'scroll', xpath: xpath_element, offset_x: offset_x_element , offset_y: offset_y_element, };
scroll_array.push(pageCoords);
if (scroll_array.length >= parseInt(#{scroll})) {
var coordinates = scroll_array;
sendRequest({'scroll_data': coordinates, 'total_scrolls': #{scroll} });
scroll_array = [];
}
}
})();
document.querySelector('#{html_element}').onmousemove = function(ev) {
var xpath_element = xpathstring(ev);
var element_width = ev.target.getBoundingClientRect().width;
var element_height= ev.target.getBoundingClientRect().height;
offset_x_element = ev.offsetX / element_width;
offset_y_element = ev.offsetY / element_height;
var pageCoords = { path: "#{exact_route}", type: 'move', xpath: xpath_element, offset_x: offset_x_element , offset_y: offset_y_element, };
var obj = move_array.find(function (obj) { return obj.xpath === xpath_element; });
if (obj == null){
move_array.push(pageCoords);
}
if (move_array.length >= parseInt(#{move}))
{
var coordinates = move_array;
sendRequest({'move_data': coordinates,'total_moves': #{move} });
move_array = [];
}
};
var click_array = [];
document.querySelector('#{html_element}').onclick = function(ev) {
var xpath_element= xpathstring(ev);
var element_width = ev.target.getBoundingClientRect().width;
var element_height= ev.target.getBoundingClientRect().height;
offset_x_element = ev.offsetX / element_width;
offset_y_element = ev.offsetY / element_height;
var pageCoords = { path: "#{exact_route}", type: 'click', xpath: xpath_element, offset_x: offset_x_element , offset_y: offset_y_element, };
click_array.push(pageCoords);
if (click_array.length >= parseInt(#{click}))
{
var coordinates = click_array;
sendRequest({'click_data': coordinates, 'total_clicks': #{click} });
click_array = [];
}
};
function sendRequest(coordinates_data){
$.ajax({
method: "POST",
url: '/points',
data: coordinates_data,
dataType: 'application/json'
});
}
});
function xpathstring(event) {
var e = event.srcElement || event.originalTarget,
path = xpath(e, '');
return path
}
function xpath(element, suffix) {
var parent, child_index, node_name;
parent = element.parentElement;
if (parent) {
node_name = element.nodeName.toLowerCase();
child_index = nodeindex(element, parent.children) + 1;
return xpath(parent, '/' + node_name + '[' + child_index + ']' + suffix);
} else {
return '//html[1]' + suffix;
}
}
function nodeindex(element, array) {
var i,
found = -1,
element_name = element.nodeName.toLowerCase(),
matched
;
for (i = 0; i != array.length; ++i) {
matched = array[i];
if (matched.nodeName.toLowerCase() === element_name) {
++found;
if (matched === element) {
return found;
}
}
}
return -1;
}
function getOffset( path ) {
el = document.evaluate(path, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
var _x = 0;
var _y = 0;
while( el && !isNaN( el.offsetLeft ) && !isNaN( el.offsetTop ) ) {
_x += el.offsetLeft - el.scrollLeft;
_y += el.offsetTop - el.scrollTop;
el = el.offsetParent;
}
return { y: _y, x: _x };
}
</script>
JS
html += js
html.respond_to?(:html_safe) ? html.html_safe : html
end
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