fix(lists): Fix makeMarkdown tasklist (#846)

Fix makeMarkdown() with tasklist by adding input subparser.

Close #774

Co-authored-by: Estevão Soares dos Santos <estevao.santos@gmail.com>

src/subParsers/makemarkdown/input.js

@@ -0,0 +1,16 @@
+showdown.subParser('makeMarkdown.input', function (node, globals) {
+  'use strict';
+
+  var txt = '';
+  if (node.getAttribute('checked') !== null) {
+    txt += '[x]';
+  } else {
+    txt += '[ ]';
+  }
+  var children = node.childNodes,
+      childrenLength = children.length;
+  for (var i = 0; i < childrenLength; ++i) {
+    txt += showdown.subParser('makeMarkdown.node')(children[i], globals);
+  }
+  return txt;
+});

src/subParsers/makemarkdown/node.js

@@ -113,6 +113,10 @@ showdown.subParser('makeMarkdown.node', function (node, globals, spansOnly) {
       txt = showdown.subParser('makeMarkdown.break')(node, globals);
       break;
 
+    case 'input':
+      txt = showdown.subParser('makeMarkdown.input')(node, globals);
+      break;
+
     default:
       txt = node.outerHTML + '\n\n';
   }

test/functional/makemarkdown/cases/features/tasklists.html

@@ -0,0 +1,8 @@
+<h1 id="mythings">my things</h1>
+<ul>
+    <li>foo</li>
+    <li class="task-list-item" style="list-style-type: none;"><input type="checkbox" disabled style="margin: 0px 0.35em 0.25em -1.6em; vertical-align: middle;"> bar</li>
+    <li class="task-list-item" style="list-style-type: none;"><input type="checkbox" disabled style="margin: 0px 0.35em 0.25em -1.6em; vertical-align: middle;"> baz</li>
+    <li class="task-list-item" style="list-style-type: none;"><input type="checkbox" disabled style="margin: 0px 0.35em 0.25em -1.6em; vertical-align: middle;" checked> bazinga</li>
+</ul>
+<p>otherthings</p>

test/functional/makemarkdown/cases/features/tasklists.md

@@ -0,0 +1,8 @@
+# my things
+
+- foo
+- [ ] bar
+- [ ] baz
+- [x] bazinga
+
+otherthings

test/functional/makemarkdown/testsuite.features.js

@@ -0,0 +1,23 @@
+/**
+ * Created by Estevao on 08-06-2015.
+ */
+var bootstrap = require('./makemarkdown.bootstrap.js'),
+    showdown = bootstrap.showdown,
+    assertion = bootstrap.assertion,
+    testsuite = bootstrap.getTestSuite('test/functional/makemarkdown/cases/features/');
+
+describe('makeMarkdown() features testsuite', function () {
+  'use strict';
+
+  describe('issues', function () {
+    for (var i = 0; i < testsuite.length; ++i) {
+      var converter;
+      if (testsuite[i].name === '#164.4.tasklists') {
+        converter = new showdown.Converter({tasklists: true});
+      } else {
+        converter = new showdown.Converter();
+      }
+      it(testsuite[i].name.replace(/-/g, ' '), assertion(testsuite[i], converter));
+    }
+  });
+});