Add "frame" : scrollable area.

examples/dom/CMakeLists.txt

@@ -4,7 +4,7 @@ function(example name)
 endfunction(example)
 
 example(dbox)
-example(frame)
+example(border)
 example(gauge)
 example(package_manager)
 example(separator)

examples/dom/border.cpp

@@ -15,13 +15,11 @@ int main(int argc, const char *argv[])
           text(L"Line 1"),
           text(L"Line 2"),
           text(L"Line 3"),
-          frame(
-            vbox(
-              text(L"Line 4"),
-              text(L"Line 5"),
-              text(L"Line 6")
-            )
-          ),
+          vbox(
+            text(L"Line 4"),
+            text(L"Line 5"),
+            text(L"Line 6")
+          ) | border,
           hbox(
             window(text(L"frame 2"),
               vbox(

examples/dom/dbox.cpp

@@ -7,20 +7,14 @@ int main(int argc, const char *argv[])
   using namespace ftxui;
   auto document =
     dbox(
-      frame(
-        vbox(
-          text(L"line_1"),
-          text(L"line_2"),
-          text(L"line_3"),
-          text(L"line_4"),
-          text(L"line_5")
-        )
-      ),
-      center(
-        frame(
-          text(L"overlay")
-        )
-      )
+      vbox(
+        text(L"line_1"),
+        text(L"line_2"),
+        text(L"line_3"),
+        text(L"line_4"),
+        text(L"line_5")
+      ) | border,
+      text(L"overlay") | border | center
     );
   auto screen = Screen::TerminalOutput(document);
   Render(screen, document.get());

examples/dom/spinner.cpp

@@ -24,7 +24,7 @@ int main(int argc, const char *argv[])
         )
       );
     }
-    auto document = hbox(vbox(std::move(entries)) | frame, filler());
+    auto document = hbox(vbox(std::move(entries)) | border, filler());
     auto screen = Screen::TerminalOutput(document);
     Render(screen, document.get());
     std::cout << reset_position << screen.ToString() << std::flush;