Add html_like example. Improve take_any_args.

ftxui/include/ftxui/dom/take_any_args.hpp

@@ -1,18 +1,30 @@
 #include <type_traits>
 
+template <class T>
+void Merge(Elements& container, T t) {}
+
+template <>
+inline void Merge(Elements& container, Element element) {
+  container.push_back(std::move(element));
+}
+
+template <>
+inline void Merge(Elements& container, Elements elements) {
+  for(auto& element : elements)
+    container.push_back(std::move(element));
+}
+
 // Turn a set of arguments into a vector.
 template <class... Args>
 Elements unpack(Args... args) {
-  using T = std::common_type_t<Args...>;
-  std::vector<T> vec;
-  (vec.push_back(std::forward<Args>(args)), ...);
+  std::vector<Element> vec;
+  (Merge(vec, std::move(args)), ...);
   return vec;
 }
 
 // Make |container| able to take any number of argments.
 #define TAKE_ANY_ARGS(container) \
-  template <class... Args> \
-  Element container(Args... children) { \
-    return container(unpack(std::forward<Args>(children)...)); \
-  } \
-
+template <class... Args> \
+Element container(Args... children) { \
+  return container(unpack(std::forward<Args>(children)...)); \
+}

ftxui/src/ftxui/dom/paragraph.cpp

@@ -8,9 +8,7 @@ Elements paragraph(std::wstring the_text) {
   std::wstringstream ss(the_text);
   std::wstring word;
   while (std::getline(ss, word, L' ')) {
-    if (word.size()) {
-      output.push_back(text(word + L' '));
-    }
+    output.push_back(text(word + L' '));
   }
   return output;
 }

ftxui/src/ftxui/dom/size.cpp

@@ -39,8 +39,26 @@ class Size : public Node {
 
   void SetBox(Box box) override {
     Node::SetBox(box);
-    if (constraint_ == LESS_THAN)
-      box.x_max = std::min(box.x_min + value_ + 1, box.x_max);
+
+    if (direction_ == WIDTH) {
+      switch(constraint_) {
+        case LESS_THAN:
+        case EQUAL:
+          box.x_max = std::min(box.x_min + value_ + 1, box.x_max);
+          break;
+        case GREATER_THAN:
+          break;
+      }
+    } else {
+      switch(constraint_) {
+        case LESS_THAN:
+        case EQUAL:
+          box.y_max = std::min(box.y_min + value_ + 1, box.y_max);
+          break;
+        case GREATER_THAN:
+          break;
+      }
+    }
     children[0]->SetBox(box);
   }