<!--
@license
The MIT License (MIT)
Copyright (c) 2015 Dipartimento di Informatica - Università di Salerno - Italy
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-->
<!--
* Developed by :
* ROUTE-TO-PA Project - grant No 645860. - www.routetopa.eu
*
-->
<link rel="import" href="../base-datalet/base-datalet.html">
<link rel="import" href="../../bower_components/iron-flex-layout/iron-flex-layout.html">
<link rel="import" href="../../bower_components/paper-dialog/paper-dialog.html">
<link rel="import" href="../../bower_components/paper-fab/paper-fab.html">
<!--
`preview-datalet` is a datalet that allow user to preview the content of a web page. It creates a thumbnail of the site using the data-url attribute passed as input.
Example:
<preview-datalet data-url="http://spod.routetopa.eu"
</preview-datalet>
@element preview-datalet
@status beta
@homepage
@group datalets
-->
<dom-module id="graph-clustering-datalet">
<template>
<link rel="stylesheet" href="static/css/graphClusteringStyle.css">
<style is="custom-style">
#dialog{
position: absolute;
padding: 20px;
top: 20px;
right:5%;
}
#close{
position: absolute;
top: -20px;
right: 3px;
--iron-icon-height: 20px;
--iron-icon-width: 20px;
width: 24px;
height: 24px;
--paper-fab-background:#9e9e9e;
z-index: 1001;
}
</style>
<div style="align-content: center;overflow: visible" id="graph_content">
<svg id="sbiricuda"></svg>
</div>
<paper-dialog id="dialog">
<paper-fab id="close" mini icon="close" on-click="_onCloseClick"></paper-fab>
<h2 id="dialog_title"></h2>
<paper-dialog-scrollable id="dialog_content">cos</paper-dialog-scrollable>
</paper-dialog>
</template>
<script src="static/js/d3.v3.js"></script>
<script>
_this = null;
var dr = 4, // default point radius
off = 15, // cluster hull offset
expand = {}, // expanded clusters
data, net, force, hullg, hull, linkg, link, nodeg, node;
var fill = d3.scale.category20();
var curve = d3.svg.line()
.interpolate("cardinal-closed")
.tension(.85);
Polymer({
is : 'graph-clustering-datalet',
properties: {
/**
* It's the url for the preview
*
* @attribute url
* @type Strig
* @default ''
*/
width: {
type: Number,
value: undefined
},
height: {
type: Number,
type: undefined
},
svg: {
type: Object,
value: undefined
},
feelings: {
type: Array,
values: ["Agree", "Neutral", "Not agree"]
},
gnodes : {
type : Array,
value : []
},
glinks : {
type :Array,
value : []
},
graph : {
type : Object,
value : {}
},
prev_selected_node : {
type : Object,
value : null
}
},
/* fill : function(group){
d3.scale.category20();
},*/
noop : function() { return false; },
nodeid : function(n) {
return n.size ? "_g_"+n.group : n.name;
},
linkid: function(l) {
var u = _this.nodeid(l.source),
v = _this.nodeid(l.target);
return u<v ? u+"|"+v : v+"|"+u;
},
getGroup: function(n) {
return n.group;
},
// constructs the network to visualize
network : function(prev, index, expand) {
expand = expand || {};
var gm = {}, // group map
nm = {}, // node map
lm = {}, // link map
gn = {}, // previous group nodes
gc = {}, // previous group centroids
nodes = [], // output nodes
links = []; // output links
// process previous nodes for reuse or centroid calculation
if (prev) {
prev.nodes.forEach(function(n) {
var i = index(n), o;
if (n.size > 0) {
gn[i] = n;
n.size = 0;
} else {
o = gc[i] || (gc[i] = {x:0,y:0,count:0});
o.x += n.x;
o.y += n.y;
o.count += 1;
}
});
}
// determine nodes
for (var k=0; k < this.graph.nodes.length; ++k) {
var n = this.graph.nodes[k],
i = index(n),
l = gm[i] || (gm[i]=gn[i]) || (gm[i]={group:i, size:0, nodes:[]});
if (expand[i]) {
// the node should be directly visible
nm[n.name] = nodes.length;
nodes.push(n);
if (gn[i]) {
// place new nodes at cluster location (plus jitter)
n.x = gn[i].x + Math.random();
n.y = gn[i].y + Math.random();
}
} else {
// the node is part of a collapsed cluster
if (l.size == 0) {
// if new cluster, add to set and position at centroid of leaf nodes
nm[i] = nodes.length;
nodes.push(l);
if (gc[i]) {
l.x = gc[i].x / gc[i].count;
l.y = gc[i].y / gc[i].count;
}
}
l.nodes.push(n);
}
// always count group size as we also use it to tweak the force graph strengths/distances
l.size += 1;
n.group_data = l;
}
for (i in gm) { gm[i].link_count = 0; }
// determine links
for (k=0; k<this.graph.links.length; ++k) {
var e = this.graph.links[k],
u = index(e.source),
v = index(e.target);
if (u != v) {
gm[u].link_count++;
gm[v].link_count++;
}
u = expand[u] ? nm[e.source.name] : nm[u];
v = expand[v] ? nm[e.target.name] : nm[v];
var i = (u<v ? u+"|"+v : v+"|"+u),
l = lm[i] || (lm[i] = {source:u, target:v, size:0});
l.size += 1;
}
for (i in lm) { links.push(lm[i]); }
return {nodes: nodes, links: links};
},
// constructs the network to visualize
convexHulls : function(nodes, index, offset) {
var hulls = {};
// create point sets
for (var k=0; k<nodes.length; ++k) {
var n = nodes[k];
if (n.size) continue;
var i = index(n),
l = hulls[i] || (hulls[i] = []);
l.push([n.x-offset, n.y-offset]);
l.push([n.x-offset, n.y+offset]);
l.push([n.x+offset, n.y-offset]);
l.push([n.x+offset, n.y+offset]);
}
// create convex hulls
var hullset = [];
for (i in hulls) {
hullset.push({group: i, path: d3.geom.hull(hulls[i])});
}
return hullset;
},
drawCluster : function(d) {
return curve(d.path); // 0.8
},
init : function() {
if (force) force.stop();
net = this.network(net, this.getGroup, expand);
force = d3.layout.force()
.nodes(net.nodes)
.links(net.links)
.size([this.width, this.height])
.linkDistance(function(l, i) {
var n1 = l.source, n2 = l.target;
// larger distance for bigger groups:
// both between single nodes and _other_ groups (where size of own node group still counts),
// and between two group nodes.
//
// reduce distance for groups with very few outer links,
// again both in expanded and grouped form, i.e. between individual nodes of a group and
// nodes of another group or other group node or between two group nodes.
//
// The latter was done to keep the single-link groups ('blue', rose, ...) close.
return 30 +
Math.min(20 * Math.min((n1.size || (n1.group != n2.group ? n1.group_data.size : 0)),
(n2.size || (n1.group != n2.group ? n2.group_data.size : 0))),
-30 +
30 * Math.min((n1.link_count || (n1.group != n2.group ? n1.group_data.link_count : 0)),
(n2.link_count || (n1.group != n2.group ? n2.group_data.link_count : 0))),
100);
//return 150;
})
.linkStrength(function(l, i) {
return 1;
})
.gravity(0.05) // gravity+charge tweaked to ensure good 'grouped' view (e.g. green group not smack between blue&orange, ...
.charge(-600) // ... charge is important to turn single-linked groups to the outside
.friction(0.5) // friction adjusted to get dampened display: less bouncy bouncy ball [Swedish Chef, anyone?]
.start();
hullg.selectAll("path.hull").remove();
hull = hullg.selectAll("path.hull")
.data(this.convexHulls(net.nodes, this.getGroup, off))
.enter().append("path")
.attr("class", "hull")
.attr("d", this.drawCluster)
.style("fill", function(d) { return fill(d.group); })
.on("click", function(d) {
console.log("hull click", d, arguments, this, expand[d.group]);
expand[d.group] = false; _this.init();
});
link = linkg.selectAll("line.link").data(net.links, this.linkid);
link.exit().remove();
link.enter().append("line")
.attr("class", "link")
.attr("x1", function(d) { return d.source.x; })
.attr("y1", function(d) { return d.source.y; })
.attr("x2", function(d) { return d.target.x; })
.attr("y2", function(d) { return d.target.y; })
.attr("style", function(t){ return "stroke:" + t.color })
.style("stroke-width", function(d) { return d.size || 1; });
node = nodeg.selectAll("circle.node").data(net.nodes, this.nodeid);
node.exit().remove();
node.enter().append("circle")
// if (d.size) -- d.size > 0 when d is a group node.
.attr("class", function(d) { return "node" + (d.size?"":" leaf"); })
.attr("r", function(d) { return d.size ? d.size + dr : dr+1; })
//.attr("r", function (t) { return t.r;})
.attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; })
.attr("id", function(d){ return d.id; })
//.attr("style", function (t) { return t.color ? "fill:" + t.color : !1 + "; stroke:white" })
.style("fill", function(d) { return fill(d.group); })
.on("mouseover", this.mouseover)
.on("mouseout", this.mouseout)
.on("click", this.active)
.on("click", function(d) {
//console.log("node click", d, arguments, this, expand[d.group]);
expand[d.group] = !expand[d.group];
_this.init();
});
node.call(force.drag);
force.on("tick", function() {
if (!hull.empty()) {
hull.data(_this.convexHulls(net.nodes, _this.getGroup, off))
.attr("d", _this.drawCluster);
}
link.attr("x1", function(d) { return d.source.x; })
.attr("y1", function(d) { return d.source.y; })
.attr("x2", function(d) { return d.target.x; })
.attr("y2", function(d) { return d.target.y; });
node.attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; });
});
},
buildGraph: function (){
this.svg = this.svg.append("g")
.call(d3.behavior.zoom().scaleExtent([.25, 20]).on("zoom", this.zoom))
.append("g");
//set initial zoom
scale = (1.0);
//translate = [(width-scale*width)/2, ((height-scale*height)/4)];
translate = [0, 0];
this.svg.transition()
.duration(750)
.attr("transform", "translate(" + translate + ")scale(" + scale + ")")
.each("end", function () {
d3.behavior.zoom()
.scale(scale)
.translate(translate);
});
//end set initial zoom
this.svg.append("rect")
.attr("fill", "white")
.attr("width", this.width)
.attr("height", this.height);
//pezzotto
this.svg.append("filter")
.attr("id","filter1")
.attr("x","0%")
.attr("y","0%")
.attr("width","100%")
.attr("height","100%")
.append("feImage")
.attr("xlink:href","http://icons.iconarchive.com/icons/hopstarter/soft-scraps/256/User-Executive-Green-icon.png");
for (var i = 0; i < this.graph.links.length; ++i) {
o = this.graph.links[i];
o.source = this.graph.nodes[o.source];
o.target = this.graph.nodes[o.target];
}
hullg = this.svg.append("g");
linkg = this.svg.append("g");
nodeg = this.svg.append("g");
this.init();
this.svg.attr("opacity", 1e-6)
.transition()
.duration(1000)
.attr("opacity", 1);
},
zoom: function() {
_this.svg.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")");
},
text: function (t){
var e = t.append("svg:foreignObject").attr("width", 120).attr("height", 30);
e.attr("style", function (t) {
return "color:" + (t.color ? t.color : "#000")
}).append("xhtml:div").html(function (t) {
//return t.fixed ? t.name : null
return t.name;
})
},
tick : function () {
// d3.select("svg").attr("style", "transform:translate(8%)");
d3.selectAll("g foreignObject").attr("x", function (t) {
return t.x + (t.r ? 0.8 * t.r : 15)
}).attr("y", function (t) {
return t.y - 20
});
d3.selectAll("#logo text").attr("x", function (t) {
return t.x + .7 * (t.r ? t.r : 15)
}).attr("y", function (t) {
return t.y
});
_this.gnodes.attr("cx", function (t) {
return t.x = Math.max(25, Math.min(_this.width - 50, t.x))
}).attr("cy", function (t) {
return t.y = Math.max(8, Math.min(600, t.y))
});
_this.glinks.attr("x1", function (t) {
return t.source.x
}).attr("y1", function (t) {
return t.source.y
}).attr("x2", function (t) {
return t.target.x
}).attr("y2", function (t) {
return t.target.y
})
},
mouseover : function (t) {
d3.select(this).selectAll("circle").transition().duration(600).ease("elastic").attr("r", function (t) {
//return 1 == t.fixed ? 1.4 * t.r : 15
return 1 == t.fixed ? 1.4 * t.r : t.r + 10;
});
_this.$.dialog.close();
_this.$.dialog_title.innerHTML = t.name;
_this.$.dialog_content.innerHTML = t.content;
_this.$.dialog.open();
},
mouseout : function () {
d3.select(this).selectAll("text").style("visibility", "hidden"), d3.select(this).selectAll("circle").transition().duration(400).attr("r", function (t) {
return t.r ? t.r : 15
});
_this.$.dialog.close();
},
active : function (t) {
_this.fire('graph-datalet_node-clicked', {node : t});
if(_this.prev_selected_node != null){
_this.prev_selected_node.style.fill = _this.prev_selected_node.style.stroke;
_this.prev_selected_node.style.stroke = "#FFFFFF";
}
_this.prev_selected_node = document.getElementById("" + t.id);
_this.prev_selected_node.style.fill = "#FFFFFF"
_this.prev_selected_node.style.stroke = t.color;
/* _this.$.dialog.close();
_this.$.dialog_title.innerHTML = t.name;
_this.$.dialog_content.innerHTML = t.content;
_this.$.dialog.open();*/
},
_onCloseClick : function(){
//_this.$.dialog.close();
},
/**
* It is called after the element’s template has been stamped and all elements inside the element’s local
* DOM have been configured (with values bound from parents, deserialized attributes, or else default values)
* and had their ready method called.
*
* Extract the dataset domain from the entire URL and set the text content of the datalet footer.
*
* @method ready
*
*/
ready: function(){
_this = this;
this.svg = d3.select("svg#sbiricuda").attr("class", "svg").attr({
width: "100%",
height: "100%"
}).attr("viewBox", "0 0 " + this.width + " " + this.height)
.attr("pointer-events", "all")
.attr("style", "transform:translate(0px)")
.style("position", "absolute");
var groups = [];
for(var i= 0,j=0; i < this.graph.nodes.length;i++,j+=3){
groups.push([{key : "" + j, values : []}, {key : "" + (j + 1), values : []}, {key : "" + (j + 2), values : []}]);
if(this.graph.nodes[i].father != null){
switch (parseInt(this.graph.nodes[i].sentiment)){
case 1:
groups[this.graph.nodes[i].father.id][0].values.push(this.graph.nodes[i]);
break;
case 2:
groups[this.graph.nodes[i].father.id][1].values.push(this.graph.nodes[i]);
break;
case 3:
groups[this.graph.nodes[i].father.id][2].values.push(this.graph.nodes[i]);
break;
}
}
}
var index = 0;
for(var i=0; i < groups.length; i++){
for(var j=0; j < groups[i].length;j++){
for(var k=0; k < groups[i][j].values.length;k++)
this.graph.nodes[groups[i][j].values[k].id].group = i;
}
}
this.buildGraph();
}
});
</script>
</dom-module>