FEATURE: site setting to allow html tables (which may come from imports)

(allow_html_tables , disabled by default)

app/assets/javascripts/discourse/dialects/dialect.js

@@ -475,7 +475,7 @@ Discourse.Dialect = {
 
   **/
   replaceBlock: function(args) {
-    this.registerBlock(args.start.toString(), function(block, next) {
+    var fn = function(block, next) {
 
       var linebreaks = dialect.options.traditional_markdown_linebreaks ||
           Discourse.SiteSettings.traditional_markdown_linebreaks;
@@ -565,7 +565,13 @@ Discourse.Dialect = {
       var emitterResult = args.emitter.call(this, contentBlocks, match, dialect.options);
       if (emitterResult) { result.push(emitterResult); }
       return result;
-    });
+    };
+
+    if (args.priority) {
+      fn.priority = args.priority;
+    }
+
+    this.registerBlock(args.start.toString(), fn);
   },
 
   /**

app/assets/javascripts/discourse/dialects/table_dialect.js

@@ -0,0 +1,52 @@
+var flattenBlocks = function(blocks) {
+  var result = "";
+  blocks.forEach(function(b) {
+    result += b;
+    if (b.trailing) { result += b.trailing; }
+  });
+
+  // bypass newline insertion
+  return result.replace(/[\n\r]/g, " ");
+};
+
+var emitter = function(contents) {
+  // TODO event should be fired when sanitizer loads
+  if (window.html4 && window.html4.ELEMENTS.td !== 1) {
+     window.html4.ELEMENTS.table = 0;
+     window.html4.ELEMENTS.tbody = 1;
+     window.html4.ELEMENTS.td = 1;
+     window.html4.ELEMENTS.thead = 1;
+     window.html4.ELEMENTS.th = 1;
+     window.html4.ELEMENTS.tr = 1;
+  }
+  return ['table', {"class": "md-table"}, flattenBlocks.apply(this, [contents])];
+};
+
+var tableBlock = {
+  start: /(<table>)([\S\s]*)/igm,
+  stop: /<\/table>/igm,
+  rawContents: true,
+  emitter: emitter,
+  priority: 1
+};
+
+var init = function(){
+  if (Discourse.SiteSettings.allow_html_tables) {
+    Discourse.Markdown.whiteListTag("table");
+    Discourse.Markdown.whiteListTag("table", "class", "md-table");
+    Discourse.Markdown.whiteListTag("tbody");
+    Discourse.Markdown.whiteListTag("thead");
+    Discourse.Markdown.whiteListTag("tr");
+    Discourse.Markdown.whiteListTag("th");
+    Discourse.Markdown.whiteListTag("td");
+    Discourse.Dialect.replaceBlock(tableBlock);
+
+  }
+};
+
+if (Discourse.SiteSettings) {
+  init();
+} else {
+  Discourse.initializer({initialize: init, name: 'enable-html-tables'});
+}
+

app/assets/stylesheets/common/base/topic-post.scss

@@ -243,4 +243,20 @@ blockquote > *:last-child {
 }
 
 
+table.md-table {
+  thead {
+    border-bottom: 2px solid lighten($primary, 80%);
+    th {
+      text-align: left;
+      padding-bottom: 2px;
+    }
+  }
+
+  td,th {
+    padding: 3px 3px 3px 10px;
+  }
+  tr {
+    border-bottom: 1px solid lighten($primary, 80%);
+  }
+}