refactor BranchGraph class

app/assets/javascripts/network/network.js

 /* eslint-disable func-names, space-before-function-paren, wrap-iife, no-var, quotes, quote-props, prefer-template, comma-dangle, max-len */
-/* global BranchGraph */
+
+import BranchGraph from './branch_graph';
 
 (function() {
   this.Network = (function() {

app/assets/javascripts/network/network_bundle.js

@@ -2,7 +2,6 @@
 /* global Network */
 /* global ShortcutsNetwork */
 
-require('./branch_graph');
 require('./network');
 
 (function() {

app/assets/javascripts/network/raphael.js

+import Raphael from 'raphael/raphael';
+
+Raphael.prototype.commitTooltip = function commitTooltip(x, y, commit) {
+  const boxWidth = 300;
+  const icon = this.image(gon.relative_url_root + commit.author.icon, x, y, 20, 20);
+  const nameText = this.text(x + 25, y + 10, commit.author.name);
+  const idText = this.text(x, y + 35, commit.id);
+  const messageText = this.text(x, y + 50, commit.message.replace(/\r?\n/g, ' \n '));
+  const textSet = this.set(icon, nameText, idText, messageText).attr({
+    'text-anchor': 'start',
+    font: '12px Monaco, monospace',
+  });
+  nameText.attr({
+    font: '14px Arial',
+    'font-weight': 'bold',
+  });
+  idText.attr({
+    fill: '#AAA',
+  });
+  messageText.node.style['white-space'] = 'pre';
+  this.textWrap(messageText, boxWidth - 50);
+  const rect = this.rect(x - 10, y - 10, boxWidth, 100, 4).attr({
+    fill: '#FFF',
+    stroke: '#000',
+    'stroke-linecap': 'round',
+    'stroke-width': 2,
+  });
+  const tooltip = this.set(rect, textSet);
+  rect.attr({
+    height: tooltip.getBBox().height + 10,
+    width: tooltip.getBBox().width + 10,
+  });
+  tooltip.transform(['t', 20, 20]);
+  return tooltip;
+};
+
+Raphael.prototype.textWrap = function testWrap(t, width) {
+  const content = t.attr('text');
+  const abc = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
+  t.attr({
+    text: abc,
+  });
+  const letterWidth = t.getBBox().width / abc.length;
+  t.attr({
+    text: content,
+  });
+  const words = content.split(' ');
+  let x = 0;
+  const s = [];
+  for (let j = 0, len = words.length; j < len; j += 1) {
+    const word = words[j];
+    if (x + (word.length * letterWidth) > width) {
+      s.push('\n');
+      x = 0;
+    }
+    if (word === '\n') {
+      s.push('\n');
+      x = 0;
+    } else {
+      s.push(`${word} `);
+      x += word.length * letterWidth;
+    }
+  }
+  t.attr({
+    text: s.join('').trim(),
+  });
+  const b = t.getBBox();
+  const h = Math.abs(b.y2) + 1;
+  return t.attr({
+    y: h,
+  });
+};
+
+export default Raphael;