/**
 * Copyright (c) 2006-2013, JGraph Ltd
 * 
 * Codec
 */

import React from 'react';
import mxEvent from '../mxgraph/util/mxEvent';
import mxGraph from '../mxgraph/view/mxGraph';
import Codec from '../mxgraph/io/Codec';
import mxUtils from '../mxgraph/util/mxUtils';
import mxConstants from '../mxgraph/util/mxConstants';
import mxEdgeStyle from '../mxgraph/view/mxEdgeStyle';


// Contains a graph description which will be converted
const HTML_TEMPLATE = `
<h1>Codec</h1>

This example demonstrates dynamically creating a graph from XML and
encoding the model into XML, as well as changing the default style for
edges in-place. This graph is embedded in the page.
<div className="mxgraph" style="position:relative;overflow:auto;">
  &lt;mxGraphModel&gt;&lt;root&gt;&lt;mxCell id="0"/&gt;&lt;mxCell
  id="1" parent="0"/&gt;&lt;mxCell id="2" vertex="1" parent="1"
  value="Interval 1"&gt;&lt;mxGeometry x="380" y="0" width="140"
  height="30" as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell id="3"
  vertex="1" parent="1" value="Interval 2"&gt;&lt;mxGeometry x="200"
  y="80" width="380" height="30"
  as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell id="4" vertex="1"
  parent="1" value="Interval 3"&gt;&lt;mxGeometry x="40" y="140"
  width="260" height="30" as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell
  id="5" vertex="1" parent="1" value="Interval 4"&gt;&lt;mxGeometry
  x="120" y="200" width="240" height="30"
  as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell id="6" vertex="1"
  parent="1" value="Interval 5"&gt;&lt;mxGeometry x="420" y="260"
  width="80" height="30" as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell
  id="7" edge="1" source="2" target="3" parent="1"
  value="Transfer1"&gt;&lt;mxGeometry as="geometry"&gt;&lt;Array
  as="points"&gt;&lt;Object x="420"
  y="60"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;mxCell
  id="8" edge="1" source="2" target="6" parent="1"
  value=""&gt;&lt;mxGeometry as="geometry" relative="1"
  y="-30"&gt;&lt;Array as="points"&gt;&lt;Object x="600"
  y="60"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;mxCell
  id="9" edge="1" source="3" target="4" parent="1"
  value="Transfer3"&gt;&lt;mxGeometry as="geometry"&gt;&lt;Array
  as="points"&gt;&lt;Object x="260"
  y="120"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;mxCell
  id="10" edge="1" source="4" target="5" parent="1"
  value="Transfer4"&gt;&lt;mxGeometry as="geometry"&gt;&lt;Array
  as="points"&gt;&lt;Object x="200"
  y="180"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;mxCell
  id="11" edge="1" source="4" target="6" parent="1"
  value="Transfer5"&gt;&lt;mxGeometry as="geometry" relative="1"
  y="-10"&gt;&lt;Array as="points"&gt;&lt;Object x="460"
  y="155"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;/root&gt;&lt;/mxGraphModel&gt;
</div>
This graph is embedded in the page.
<div
  className="mxgraph"
  style="position:relative;background:#eeeeee;border:1px solid gray;overflow:auto;width:400px;height:200px;"
>
  &lt;mxGraphModel&gt;&lt;root&gt;&lt;mxCell id="0"/&gt;&lt;mxCell
  id="1" parent="0"/&gt;&lt;mxCell id="2" vertex="1" parent="1"
  value="Interval 1"&gt;&lt;mxGeometry x="380" y="0" width="140"
  height="30" as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell id="3"
  vertex="1" parent="1" value="Interval 2"&gt;&lt;mxGeometry x="200"
  y="80" width="380" height="30"
  as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell id="4" vertex="1"
  parent="1" value="Interval 3"&gt;&lt;mxGeometry x="40" y="140"
  width="260" height="30" as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell
  id="5" vertex="1" parent="1" value="Interval 4"&gt;&lt;mxGeometry
  x="120" y="200" width="240" height="30"
  as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell id="6" vertex="1"
  parent="1" value="Interval 5"&gt;&lt;mxGeometry x="420" y="260"
  width="80" height="30" as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell
  id="7" edge="1" source="2" target="3" parent="1"
  value="Transfer1"&gt;&lt;mxGeometry as="geometry"&gt;&lt;Array
  as="points"&gt;&lt;Object x="420"
  y="60"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;mxCell
  id="8" edge="1" source="2" target="6" parent="1"
  value=""&gt;&lt;mxGeometry as="geometry" relative="1"
  y="-30"&gt;&lt;Array as="points"&gt;&lt;Object x="600"
  y="60"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;mxCell
  id="9" edge="1" source="3" target="4" parent="1"
  value="Transfer3"&gt;&lt;mxGeometry as="geometry"&gt;&lt;Array
  as="points"&gt;&lt;Object x="260"
  y="120"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;mxCell
  id="10" edge="1" source="4" target="5" parent="1"
  value="Transfer4"&gt;&lt;mxGeometry as="geometry"&gt;&lt;Array
  as="points"&gt;&lt;Object x="200"
  y="180"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;mxCell
  id="11" edge="1" source="4" target="6" parent="1"
  value="Transfer5"&gt;&lt;mxGeometry as="geometry" relative="1"
  y="-10"&gt;&lt;Array as="points"&gt;&lt;Object x="460"
  y="155"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;/root&gt;&lt;/mxGraphModel&gt;
</div>
This graph is embedded in the page.
<div
  className="mxgraph"
  style="position:relative;background:#eeeeee;border:6px solid gray;overflow:auto;width:400px;height:200px;"
>
  &lt;mxGraphModel&gt;&lt;root&gt;&lt;mxCell id="0"/&gt;&lt;mxCell
  id="1" parent="0"/&gt;&lt;mxCell id="2" vertex="1" parent="1"
  value="Interval 1"&gt;&lt;mxGeometry x="380" y="20" width="140"
  height="30" as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell id="3"
  vertex="1" parent="1" value="Interval 2"&gt;&lt;mxGeometry x="200"
  y="80" width="380" height="30"
  as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell id="4" vertex="1"
  parent="1" value="Interval 3"&gt;&lt;mxGeometry x="40" y="140"
  width="260" height="30" as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell
  id="5" vertex="1" parent="1" value="Interval 4"&gt;&lt;mxGeometry
  x="120" y="200" width="240" height="30"
  as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell id="6" vertex="1"
  parent="1" value="Interval 5"&gt;&lt;mxGeometry x="420" y="260"
  width="80" height="30" as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell
  id="7" edge="1" source="2" target="3" parent="1"
  value="Transfer1"&gt;&lt;mxGeometry as="geometry"&gt;&lt;Array
  as="points"&gt;&lt;Object x="420"
  y="60"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;mxCell
  id="8" edge="1" source="2" target="6" parent="1"
  value="Transfer2"&gt;&lt;mxGeometry as="geometry" relative="1"
  y="0"&gt;&lt;Array as="points"&gt;&lt;Object x="600"
  y="60"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;mxCell
  id="9" edge="1" source="3" target="4" parent="1"
  value="Transfer3"&gt;&lt;mxGeometry as="geometry"&gt;&lt;Array
  as="points"&gt;&lt;Object x="260"
  y="120"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;mxCell
  id="10" edge="1" source="4" target="5" parent="1"
  value="Transfer4"&gt;&lt;mxGeometry as="geometry"&gt;&lt;Array
  as="points"&gt;&lt;Object x="200"
  y="180"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;mxCell
  id="11" edge="1" source="4" target="6" parent="1"
  value="Transfer5"&gt;&lt;mxGeometry as="geometry" relative="1"
  y="-10"&gt;&lt;Array as="points"&gt;&lt;Object x="460"
  y="155"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;/root&gt;&lt;/mxGraphModel&gt;
</div>
This graph is embedded in the page.
<div
  className="mxgraph"
  style="position:relative;overflow:hidden;border:6px solid gray;"
>
  &lt;mxGraphModel&gt;&lt;root&gt;&lt;mxCell id="0"/&gt;&lt;mxCell
  id="1" parent="0"/&gt;&lt;mxCell id="2" vertex="1" parent="1"
  value="Interval 1"&gt;&lt;mxGeometry x="380" y="20" width="140"
  height="30" as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell id="3"
  vertex="1" parent="1" value="Interval 2"&gt;&lt;mxGeometry x="200"
  y="80" width="380" height="30"
  as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell id="4" vertex="1"
  parent="1" value="Interval 3"&gt;&lt;mxGeometry x="40" y="140"
  width="260" height="30" as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell
  id="5" vertex="1" parent="1" value="Interval 4"&gt;&lt;mxGeometry
  x="120" y="200" width="240" height="30"
  as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell id="6" vertex="1"
  parent="1" value="Interval 5"&gt;&lt;mxGeometry x="420" y="260"
  width="80" height="30" as="geometry"/&gt;&lt;/mxCell&gt;&lt;mxCell
  id="7" edge="1" source="2" target="3" parent="1"
  value="Transfer1"&gt;&lt;mxGeometry as="geometry"&gt;&lt;Array
  as="points"&gt;&lt;Object x="420"
  y="60"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;mxCell
  id="8" edge="1" source="2" target="6" parent="1"
  value="Transfer2"&gt;&lt;mxGeometry as="geometry" relative="1"
  y="0"&gt;&lt;Array as="points"&gt;&lt;Object x="600"
  y="60"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;mxCell
  id="9" edge="1" source="3" target="4" parent="1"
  value="Transfer3"&gt;&lt;mxGeometry as="geometry"&gt;&lt;Array
  as="points"&gt;&lt;Object x="260"
  y="120"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;mxCell
  id="10" edge="1" source="4" target="5" parent="1"
  value="Transfer4"&gt;&lt;mxGeometry as="geometry"&gt;&lt;Array
  as="points"&gt;&lt;Object x="200"
  y="180"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;mxCell
  id="11" edge="1" source="4" target="6" parent="1"
  value="Transfer5"&gt;&lt;mxGeometry as="geometry" relative="1"
  y="-10"&gt;&lt;Array as="points"&gt;&lt;Object x="460"
  y="155"/&gt;&lt;/Array&gt;&lt;/mxGeometry&gt;&lt;/mxCell&gt;&lt;/root&gt;&lt;/mxGraphModel&gt;
</div>
This graph is embedded in the page.`


const divs = document.getElementsByTagName('*');

for (let i = 0; i < divs.length; i += 1) {
  if (divs[i].className.toString().indexOf('mxgraph') >= 0) {
    (function(container) {
      const xml = mxUtils.getTextContent(container);
      const xmlDocument = mxUtils.parseXml(xml);

      if (
        xmlDocument.documentElement != null &&
        xmlDocument.documentElement.nodeName === 'mxGraphModel'
      ) {
        const decoder = new Codec(xmlDocument);
        const node = xmlDocument.documentElement;

        container.innerHTML = '';

        const graph = new mxGraph(container);
        graph.centerZoom = false;
        graph.setTooltips(false);
        graph.setEnabled(false);

        // Changes the default style for edges "in-place"
        const style = graph.getStylesheet().getDefaultEdgeStyle();
        style.edge = mxEdgeStyle.ElbowConnector;

        // Enables panning with left mouse button
        graph.getPlugin('PanningHandler').useLeftButtonForPanning = true;
        graph.getPlugin('PanningHandler').ignoreCell = true;
        graph.container.style.cursor = 'move';
        graph.setPanning(true);

        if (divs[i].style.width === '' && divs[i].style.height === '') {
          graph.resizeContainer = true;
        } else {
          // Adds border for fixed size boxes
          graph.border = 20;
        }

        decoder.decode(node, graph.getDataModel());
        graph.resizeContainer = false;

        // Adds zoom buttons in top, left corner
        const buttons = document.createElement('div');
        buttons.style.position = 'absolute';
        buttons.style.overflow = 'visible';

        const bs = graph.getBorderSizes();
        buttons.style.top = `${container.offsetTop + bs.y}px`;
        buttons.style.left = `${container.offsetLeft + bs.x}px`;

        let left = 0;
        const bw = 16;
        const bh = 16;

        function addButton(label, funct) {
          const btn = document.createElement('div');
          mxUtils.write(btn, label);
          btn.style.position = 'absolute';
          btn.style.backgroundColor = 'transparent';
          btn.style.border = '1px solid gray';
          btn.style.textAlign = 'center';
          btn.style.fontSize = '10px';
          btn.style.cursor = 'hand';
          btn.style.width = `${bw}px`;
          btn.style.height = `${bh}px`;
          btn.style.left = `${left}px`;
          btn.style.top = '0px';

          mxEvent.addListener(btn, 'click', function(evt) {
            funct();
            mxEvent.consume(evt);
          });

          left += bw;

          buttons.appendChild(btn);
        }

        addButton('+', function() {
          graph.zoomIn();
        });

        addButton('-', function() {
          graph.zoomOut();
        });

        if (container.nextSibling != null) {
          container.parentNode.insertBefore(buttons, container.nextSibling);
        } else {
          container.appendChild(buttons);
        }
      }
    })(divs[i]);
  }
}