D3 drag and drop matrix

forked from AlessandraSozzi's block: D3 drag and drop: manually reorder rows and columns of a matrix

<!DOCTYPE html>
<meta charset="utf-8">

<head>
	<style>
		.background {
		  	fill: #fff;
		}
		rect {
  			stroke: #fff;
  			stroke-width: 1;
		}
		text {
  			text-shadow: 0 1px 0 #fff, 1px 0 0 #fff, 0 -1px 0 #fff, -1px 0 0 #fff;
  			cursor: move;
		}
	</style>
	<title> MATRIX DRAG AND DROP </title>
</head>

var n = 6;

var margin = {top: 50, right: 30, bottom: 30, left: 50},
    	width = 800 - margin.left - margin.right,
    	height = 800 - margin.top - margin.bottom;

var y = d3.scale.ordinal().rangeBands([0, height],0,1),
    	x = d3.scale.ordinal().rangeBands([0, width],0,1),
    	c = d3.scale.category20().domain(d3.range(36));

var dragging = {};

var svg = d3.select("body")
		.append("svg")
		.attr("width", width + margin.left + margin.right)
		.attr("height", height + margin.top + margin.bottom)
		.style("margin-left", margin.left + "px")
		.append("g")
		.attr("id", "matrix")
    	.attr("transform", "translate(" + margin.left + "," + margin.top + ")");

var matrixA = [],
    	matrixB = [],
      	nodes = [{"name": "A"},
      			{"name": "B"}, 
      			{"name": "C"}, 
      			{"name": "D"}, 
      			{"name": "E"}, 
      			{"name":"F"} ],
      	n = nodes.length;

nodes.forEach(function(node, i) {
    	node.index = i;
    	node.count = 0;
    	matrixA[i] = d3.range(n).map(function(j) { 
    		return {x: j, y: i, z: 1 + (n * i) + j}; });
    	matrixB[i] = d3.range(n).map(function(j) { 
    		return {x: i, y: j, z: (n * j) + 1 + i}; });
  	});

// Default order
  	var orders = {
    	name: d3.range(n).sort(function(a, b) { return d3.ascending(nodes[a].name, nodes[b].name); })
  	};

// The default sort order.
  	y.domain(orders.name);
  	x.domain(orders.name);

svg.append("rect")
      .attr("class", "background")
      .attr("width", width)
      .attr("height", height);

var row = svg.selectAll(".row")
      	.data(matrixA)
    	.enter().append("g")
		.attr("class", "row")
		.attr("transform", function(d, i) { 
			return "translate(0," + y(i) + ")"; })
		.each(row);

var column = svg.selectAll(".column")
		.data(matrixB)
		.enter().append("g")
		.attr("class", "column")
		.attr("transform", function(d, i) { 
			return "translate(" + x(i) + ")rotate(-90)"; })
		.each(column);

var drag_behavior = d3.behavior.drag();
	var trigger;

d3.selectAll(".row").call(d3.behavior.drag()
        .origin(function(d) { 
        	return {y: y(d[0].y)}; 
        })
        .on("dragstart", function(d) {

trigger = d3.event.sourceEvent.target.className.baseVal;
    		
    		if (trigger == "label") {
	        	d3.selectAll(".cellrow").attr("opacity", 1);
				dragging[d[0].y] = y(d[0].y);

// Move the row that is moving on the front
				sel = d3.select(this);
				sel.moveToFront();
			}
        })
        .on("drag", function(d) {
        	// Hide what is in the back

if (trigger == "label") {

d3.selectAll(".cellcolumn").attr("opacity", 0);

dragging[d[0].y] = Math.min(height, Math.max(0, d3.event.y));
	          	orders.name.sort(function(a, b) { return position(a) - position(b); });
	          	y.domain(orders.name);

d3.selectAll(".row").attr("transform", function(d, i) { 
	        		return "translate(0," + position(d[0].y) + ")"; 
	        	});
	        }
        })
        .on("dragend", function(d) {

if (trigger == "label") {
	          	delete dragging[d[0].y];
	          	transition(d3.select(this)).attr("transform", "translate(0," + y(d[0].y) + ")");

d3.selectAll(".column").each(function(d) {
	            	d3.select(this).selectAll(".cellcolumn").attr("x", function(d) { 
	        			return -y(d.y)-90; });
	          	});
	        }
        })
    );

row.append("text")
		.attr("class", "label")
		.attr("x", 60)
		.attr("y", y.rangeBand() / 2)
		.attr("dy", ".32em")
		.attr("text-anchor", "end")
		.text(function(d, i) { return nodes[i].name; });

d3.selectAll(".column").call(drag_behavior
        .origin(function(d) {
        	return {x: x(d[0].x)}; 
        })
        .on("dragstart", function(d) {

trigger = d3.event.sourceEvent.target.className.baseVal;

if (trigger == "label") {

d3.selectAll(".cellcolumn").attr("opacity", 1);

dragging[d[0].x] = x(d[0].x);

// Move the column that is moving on the front
				sel = d3.select(this);
				sel.moveToFront();
			}
        })
        .on("drag", function(d) {
        	// Hide what is in the back
        	// console.log(d3.event.x);
        	// console.log(d3.event.y);
        	if (trigger == "label") {
   				d3.selectAll(".cellrow").attr("opacity", 0);

dragging[d[0].x] = Math.min(width, Math.max(0, d3.event.x));
	          	orders.name.sort(function(a, b) { return cPosition(a) - cPosition(b); });
	          	x.domain(orders.name);

d3.selectAll(".column").attr("transform", function(d, i) { 
	        		return "translate(" + cPosition(d[0].x) + ")rotate(-90)"; 
	        	});
        	}

})
        .on("dragend", function(d) {
          	delete dragging[d[0].x];
          	transition(d3.select(this)).attr("transform", "translate(" + x(d[0].x) + ")rotate(-90)");
          	d3.selectAll(".row").each(function(d, i) {
            d3.select(this).selectAll(".cellrow").attr("x", function(d) { 
        		return x(d.x); });
          	});

})
    );

column.append("text")
  		.attr("class", "label")
		.attr("x", -60)
		.attr("y", x.rangeBand() / 2)
		.attr("dy", ".32em")
		.attr("text-anchor", "start")
		.text(function(d, i) { return nodes[i].name; });

}

d3.selection.prototype.moveToFront = function() {
	  	return this.each(function(){
	    	this.parentNode.appendChild(this);
	  	});
	};

function position(d) {
	  	var v = dragging[d];
	  	return v == null ? y(d) : v;
	}

function cPosition(d) {
	  	var v = dragging[d];
	  	return v == null ? x(d) : v;
	}

function transition(g) {
	  	return g.transition().duration(500);
	}

</script>

</body>

Modified http://d3js.org/d3.v3.min.js to a secure url

https://d3js.org/d3.v3.min.js