Module: Heatmap::Helper

Defined in:
lib/heatmap/helper.rb

Instance Method Summary collapse

Instance Method Details

#save_heatmap(options = {}) ⇒ Object 



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# File 'lib/heatmap/helper.rb', line 6

def save_heatmap(options = {})

  click = options[:click] || Heatmap::Rails.options[:click]
  move = options[:move] || Heatmap::Rails.options[:move]

  html = ""

  js = "<script type=\"text/javascript\">\n$( document ).ready(function() {\n  var move_array = [];\n  document.querySelector('body').onmousemove = function(ev) {\nvar xpath_element =  xpathstring(ev);\nvar pageCoords = { path: window.location.pathname,  type: 'move', xpath: xpath_element };\nconsole.log(xpath_element);\nvar obj = move_array.find(function (obj) { return obj.xpath === xpath_element; });\nif (obj == null){\n move_array.push(pageCoords);\n}\nif (move_array.length >= parseInt(\#{move}))\n{\n  var coordinates = move_array;\n  sendRequest({'move_data': coordinates});\n  move_array = [];\n}\n  };\n  var click_array = [];\n  document.querySelector('body').onclick = function(ev) {\n\nvar xpath_element=  xpathstring(ev);\nvar pageCoords = { path: window.location.pathname,  type: 'click', xpath: xpath_element };\nclick_array.push(pageCoords);\nif (click_array.length >= parseInt(\#{click}))\n{\n  var coordinates = click_array;\n  sendRequest({'data': coordinates});\n  click_array = [];\n}\n  };\n  function sendRequest(coordinates_data){\n$.ajax({\n   method: \"POST\",\n   url: '/points',\n   data: coordinates_data,\n   dataType: 'application/json'\n});\n  }\n});\n\nfunction xpathstring(event) {\n  var\n  e = event.srcElement || event.originalTarget,\n  path = xpath(e, '');;\n  return path\n}\nfunction xpath(element, suffix) {\n  var parent, child_index, node_name;\n  parent = element.parentElement;\n  if (parent) {\n  node_name = element.nodeName.toLowerCase();\n  child_index = nodeindex(element, parent.children) + 1;\n  return xpath(parent, '/' + node_name + '[' + child_index + ']' + suffix);\n  } else {\n  return '//html[1]' + suffix;\n  }\n}\nfunction nodeindex(element, array) {\n  var i,\n  found = -1,\n  element_name = element.nodeName.toLowerCase(),\n  matched\n ;\n\n  for (i = 0; i != array.length; ++i) {\n  matched = array[i];\n  if (matched.nodeName.toLowerCase() === element_name) {\n      ++found;\n\n\n  if (matched === element) {\n      return found;\n  }\n  }\n  }\n\n  return -1;\n}\nfunction getOffset( path ) {\nel = document.evaluate(path, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;\nvar _x = 0;\nvar _y = 0;\nwhile( el && !isNaN( el.offsetLeft ) && !isNaN( el.offsetTop ) ) {\n    _x += el.offsetLeft - el.scrollLeft;\n    _y += el.offsetTop - el.scrollTop;\n    el = el.offsetParent;\n}\nreturn { y: _y, x: _x };\n}\n </script>\n"

  html += js
  html.respond_to?(:html_safe) ? html.html_safe : html
end

#show_heatmap(path) ⇒ Object 



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# File 'lib/heatmap/helper.rb', line 111

def show_heatmap(path)
  heatmap = HeatMap.where(path: path.to_s)
  @data_points = []
  @data_xpaths = []
  heatmap.each do |coordinate|
    @data_xpaths.push({xpath: coordinate.xpath, x: 0, y:0, value: 100})
  end
  html = ""
  js = "<script type=\"text/javascript\">\n  var heatmapInstance = h337.create({\ncontainer: document.querySelector('body'),\nradius: 40\n  });\n  var xpath = JSON.parse('\#{raw(@data_xpaths.to_json.html_safe)}');\n  var data_xpath = xpath.map(function(path){\nvar x_coord = getOffset(path.xpath).x+25;\nvar y_coord = getOffset(path.xpath).y+25;\ndelete path[\"xpath\"];\npath.x = parseInt(x_coord);\npath.y = parseInt(y_coord);\nreturn path;\n  });\n  heatmapInstance.addData(data_xpath);\n</script>\n"

  html += js
  html.respond_to?(:html_safe) ? html.html_safe : html
end