Implement package details page

1 files changed, 103 insertions, 0 deletions

diff --git a/brep/page.cxx b/brep/page.cxx
new file mode 100644
index 0000000..70c6d8c
--- /dev/null
+++ b/brep/page.cxx
@@ -0,0 +1,103 @@
+// file      : brep/page.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <brep/page>
+
+#include <utility>   // move()
+#include <algorithm> // min()
+
+#include <xml/serializer>
+
+#include <web/xhtml>
+
+using namespace std;
+using namespace xml;
+using namespace web::xhtml;
+
+namespace brep
+{
+  // pager
+  //
+  pager::
+  pager (size_t current_page,
+         size_t item_count,
+         size_t item_per_page,
+         size_t page_number_count,
+         get_url_type get_url)
+      : current_page_ (current_page),
+        item_count_ (item_count),
+        item_per_page_ (item_per_page),
+        page_number_count_ (page_number_count),
+        get_url_ (move (get_url))
+  {
+  }
+
+  void pager::
+  operator() (serializer& s) const
+  {
+    if (item_count_ == 0 || item_per_page_ == 0)
+      return;
+
+    size_t pc (item_count_ / item_per_page_); // Page count.
+
+    if (item_count_ % item_per_page_)
+      ++pc;
+
+    if (pc > 1)
+    {
+      // Can consider customizing class names if use-case appear.
+      //
+      s << DIV(CLASS="pager");
+
+      if (current_page_ > 0)
+        s << A(CLASS="pg-prev")
+          << HREF << get_url_ (current_page_ - 1) << ~HREF
+          <<   "<<"
+          << ~A
+          << " ";
+
+      if (page_number_count_)
+      {
+        size_t offset (page_number_count_ / 2);
+        size_t fp (current_page_ > offset ? current_page_ - offset : 0);
+        size_t tp (min (fp + page_number_count_, pc));
+
+        for (size_t p (fp); p < tp; ++p)
+        {
+          if (p == current_page_)
+            s << SPAN(CLASS="pg-cpage")
+              <<   p + 1
+              << ~SPAN;
+          else
+            s << A(CLASS="pg-page")
+              << HREF << get_url_ (p) << ~HREF
+              <<   p + 1
+              << ~A;
+
+          s << " ";
+        }
+      }
+
+      if (current_page_ < pc - 1)
+        s << A(CLASS="pg-next")
+          << HREF << get_url_ (current_page_ + 1) << ~HREF
+          <<   ">>"
+          << ~A;
+
+      s << ~DIV;
+    }
+  }
+
+  // pager_style
+  //
+  void pager_style::
+  operator() (xml::serializer& s) const
+  {
+    const char* ident ("\n      ");
+    s << ".pager {margin: 0.5em 0 0;}" << ident
+      << ".pg-prev {padding: 0 0.3em 0 0;}" << ident
+      << ".pg-page {padding: 0 0.3em 0 0;}" << ident
+      << ".pg-cpage {padding: 0 0.3em 0 0; font-weight: bold;}";
+  }
+}