From 713bd1ea12e9113c0186e86c9e169e56134ee974 Mon Sep 17 00:00:00 2001
From: Thomas Fussell <thomas.fussell@gmail.com>
Date: Tue, 3 May 2016 15:37:34 -0400
Subject: [PATCH] almost done finally. still need to figure out the interaction
 between styles and named styles, maybe improve naming

---
 .../xlnt/serialization/style_serializer.hpp   | 13 ++-
 include/xlnt/workbook/workbook.hpp            |  3 +
 source/cell/tests/test_cell.hpp               | 81 ++++++++++---------
 source/detail/workbook_impl.hpp               |  4 -
 source/serialization/style_serializer.cpp     | 74 ++++++++++++++---
 .../serialization/tests/test_style_writer.hpp |  5 +-
 source/styles/cell_style.cpp                  | 33 ++++----
 source/styles/common_style.cpp                | 46 ++++++++++-
 source/styles/named_style.cpp                 | 17 ++++
 source/styles/number_format.cpp               |  2 +-
 source/styles/tests/test_stylesheet.hpp       | 10 +--
 source/workbook/workbook.cpp                  | 34 +++++++-
 12 files changed, 238 insertions(+), 84 deletions(-)

diff --git a/include/xlnt/serialization/style_serializer.hpp b/include/xlnt/serialization/style_serializer.hpp
index 7e690048..988f2e47 100644
--- a/include/xlnt/serialization/style_serializer.hpp
+++ b/include/xlnt/serialization/style_serializer.hpp
@@ -28,6 +28,7 @@
 #include <vector>
 
 #include <xlnt/xlnt_config.hpp>
+#include <xlnt/styles/named_style.hpp>
 #include <xlnt/workbook/workbook.hpp>
 
 namespace xlnt {
@@ -256,6 +257,16 @@ public:
     
     bool write_ext_list(xml_node &ext_list_node) const;
     
+    const std::vector<border> &get_borders() const;
+    
+    const std::vector<fill> &get_fills() const;
+    
+    const std::vector<font> &get_fonts() const;
+    
+    const std::vector<number_format> &get_number_formats() const;
+    
+    const std::vector<color> &get_colors() const;
+    
 private:
     void initialize_vectors();
     
@@ -270,7 +281,7 @@ private:
     std::vector<font> fonts_;
     std::vector<number_format> number_formats_;
     std::vector<cell_style> cell_styles_;
-    std::vector<named_style> named_styles_;
+    std::unordered_map<std::size_t, named_style> named_styles_;
 };
 
 } // namespace xlnt
diff --git a/include/xlnt/workbook/workbook.hpp b/include/xlnt/workbook/workbook.hpp
index f7421dbc..6dc7d179 100644
--- a/include/xlnt/workbook/workbook.hpp
+++ b/include/xlnt/workbook/workbook.hpp
@@ -83,6 +83,8 @@ public:
     workbook &operator=(workbook other);
     workbook(workbook &&other);
     workbook(const workbook &other);
+    
+    ~workbook();
 
     friend void swap(workbook &left, workbook &right);
 
@@ -190,6 +192,7 @@ public:
     named_style &get_named_style(const std::string &name);
     const named_style &get_named_style(const std::string &name) const;
     named_style &create_named_style(const std::string &name);
+    const std::vector<named_style> &get_named_styles() const;
 
     manifest &get_manifest();
     const manifest &get_manifest() const;
diff --git a/source/cell/tests/test_cell.hpp b/source/cell/tests/test_cell.hpp
index da64bdd8..3d1ea986 100644
--- a/source/cell/tests/test_cell.hpp
+++ b/source/cell/tests/test_cell.hpp
@@ -358,87 +358,90 @@ public:
     
     void test_font()
     {
+        auto ws = wb.create_sheet();    
+        auto cell = ws.get_cell("A1");
+
         xlnt::font font;
         font.set_bold(true);
-        auto ws = wb.create_sheet();    
-        auto cell = xlnt::cell(ws, "A1");
+        
         cell.set_font(font);
+        
+        TS_ASSERT(cell.has_style());
+        TS_ASSERT(cell.get_font().apply());
         TS_ASSERT_EQUALS(cell.get_font(), font);
     }
     
     void test_fill()
     {
+        auto ws = wb.create_sheet();
+        auto cell = ws.get_cell("A1");
+        
         xlnt::fill f;
         f.set_pattern_type(xlnt::fill::pattern_type::solid);
         f.set_foreground_color(xlnt::color(xlnt::color::type::rgb, "FF0000"));
-        auto ws = wb.create_sheet();
-        xlnt::cell cell(ws, "A1");
+        
         cell.set_fill(f);
-        TS_ASSERT(cell.get_fill() == f);
+        
+        TS_ASSERT(cell.has_style());
+        TS_ASSERT(cell.get_fill().apply());
+        TS_ASSERT_EQUALS(cell.get_fill(), f);
     }
     
     void test_border()
     {
-        xlnt::border border;
         auto ws = wb.create_sheet();
+        auto cell = ws.get_cell("A1");
         
-        auto cell = ws.get_cell(xlnt::cell_reference(1, 1));
+        xlnt::border border;
+
         cell.set_border(border);
         
-        TS_ASSERT(cell.get_border() == border);
+        TS_ASSERT(cell.has_style());
+        TS_ASSERT(cell.get_border().apply());
+        TS_ASSERT_EQUALS(cell.get_border(), border);
     }
     
     void test_number_format()
     {
         auto ws = wb.create_sheet();
-        ws.get_parent().add_number_format(xlnt::number_format("dd--hh--mm"));
+        auto cell = ws.get_cell("A1");
+        
+        xlnt::number_format format("dd--hh--mm");
     
-        xlnt::cell cell(ws, "A1");
-        cell.set_number_format(xlnt::number_format("dd--hh--mm"));
-        TS_ASSERT(cell.get_number_format().get_format_string() == "dd--hh--mm");
+        cell.set_number_format(format);
+        
+        TS_ASSERT(cell.has_style());
+        TS_ASSERT(cell.get_number_format().apply());
+        TS_ASSERT_EQUALS(cell.get_number_format().get_format_string(), "dd--hh--mm");
     }
     
     void test_alignment()
     {
+        auto ws = wb.create_sheet();
+        auto cell = ws.get_cell("A1");
+        
         xlnt::alignment align;
         align.set_wrap_text(true);
-        
-        auto ws = wb.create_sheet();
     
-        xlnt::cell cell(ws, "A1");
         cell.set_alignment(align);
         
-        TS_ASSERT(cell.get_alignment() == align);
+        TS_ASSERT(cell.has_style());
+        TS_ASSERT(cell.get_alignment().apply());
+        TS_ASSERT_EQUALS(cell.get_alignment(), align);
     }
     
     void test_protection()
     {
+        auto ws = wb.create_sheet();
+        auto cell = ws.get_cell("A1");
+        
         xlnt::protection prot;
         prot.set_locked(xlnt::protection::type::protected_);
-        
-        auto ws = wb.create_sheet();
-    
-        xlnt::cell cell(ws, "A1");
+
         cell.set_protection(prot);
         
-        TS_ASSERT(cell.get_protection() == prot);
-    }
-    
-    void test_pivot_button()
-    {
-        auto ws = wb.create_sheet();
-        
-        xlnt::cell cell(ws, "A1");
-        cell.set_pivot_button(true);
-        TS_ASSERT(cell.pivot_button());
-    }
-    
-    void test_quote_prefix()
-    {
-        auto ws = wb.create_sheet();
-    
-        xlnt::cell cell(ws, "A1");
-        cell.set_quote_prefix(true);
-        TS_ASSERT(cell.quote_prefix());
+        TS_ASSERT(cell.has_style());
+        TS_ASSERT(cell.get_protection().apply());
+        TS_ASSERT_EQUALS(cell.get_protection(), prot);
     }
 };
diff --git a/source/detail/workbook_impl.hpp b/source/detail/workbook_impl.hpp
index 318d707d..1d5c1ae0 100644
--- a/source/detail/workbook_impl.hpp
+++ b/source/detail/workbook_impl.hpp
@@ -37,7 +37,6 @@ struct workbook_impl
           worksheets_(other.worksheets_),
           relationships_(other.relationships_),
           root_relationships_(other.root_relationships_),
-          drawings_(other.drawings_),
           shared_strings_(other.shared_strings_),
           properties_(other.properties_),
           app_properties_(other.app_properties_),
@@ -60,8 +59,6 @@ struct workbook_impl
         root_relationships_.clear();
         std::copy(other.root_relationships_.begin(), other.root_relationships_.end(),
                   std::back_inserter(root_relationships_));
-        drawings_.clear();
-        std::copy(other.drawings_.begin(), other.drawings_.end(), back_inserter(drawings_));
         shared_strings_.clear();
         std::copy(other.shared_strings_.begin(), other.shared_strings_.end(), std::back_inserter(shared_strings_));
         properties_ = other.properties_;
@@ -78,7 +75,6 @@ struct workbook_impl
     std::vector<worksheet_impl> worksheets_;
     std::vector<relationship> relationships_;
     std::vector<relationship> root_relationships_;
-    std::vector<drawing> drawings_;
     std::vector<std::string> shared_strings_;
 
     document_properties properties_;
diff --git a/source/serialization/style_serializer.cpp b/source/serialization/style_serializer.cpp
index 6bbf6868..e3fa3383 100644
--- a/source/serialization/style_serializer.cpp
+++ b/source/serialization/style_serializer.cpp
@@ -346,13 +346,20 @@ named_style style_serializer::read_named_style(const xml_node &named_style_node,
     auto base_style_node = style_parent_node.get_children().at(base_style_id);
     auto base_style = read_cell_style(base_style_node);
     
+    //TODO shouldn't have to set apply after set_X()
     s.set_alignment(base_style.get_alignment());
+    s.get_alignment().apply(base_style.get_alignment().apply());
     s.set_border(base_style.get_border());
+    s.get_border().apply(base_style.get_border().apply());
     s.set_fill(base_style.get_fill());
+    s.get_fill().apply(base_style.get_fill().apply());
     s.set_font(base_style.get_font());
+    s.get_font().apply(base_style.get_font().apply());
     s.set_number_format(base_style.get_number_format());
+    s.get_number_format().apply(base_style.get_number_format().apply());
     s.set_protection(base_style.get_protection());
-
+    s.get_protection().apply(base_style.get_protection().apply());
+    
     return s;
 }
 
@@ -368,6 +375,16 @@ bool style_serializer::read_stylesheet(const xml_document &xml)
     read_named_styles(stylesheet_node.get_child("cellStyles"), stylesheet_node.get_child("cellStyleXfs"));
     read_cell_styles(stylesheet_node.get_child("cellXfs"));
 
+    for (const auto &ns : named_styles_)
+    {
+        workbook_.create_named_style(ns.second.get_name()) = ns.second;
+    }
+    
+    for (const auto &s : cell_styles_)
+    {
+        workbook_.add_style(s);
+    }
+
     return true;
 }
 
@@ -386,7 +403,24 @@ bool style_serializer::read_cell_styles(const xlnt::xml_node &cell_styles_node)
         {
             auto named_style_index = std::stoull(style_node.get_attribute("xfId"));
             auto named_style = named_styles_.at(named_style_index);
+            
+            style.set_named_style(named_style.get_name());
         }
+        
+        cell_styles_.push_back(style);
+    }
+    
+    return true;
+}
+
+bool style_serializer::read_named_styles(const xlnt::xml_node &named_styles_node, const xlnt::xml_node &cell_styles_node)
+{
+    for (auto named_style_node : named_styles_node.get_children())
+    {
+        auto ns = read_named_style(named_style_node, cell_styles_node);
+        auto named_style_index = std::stoull(named_style_node.get_attribute("xfId"));
+        
+        named_styles_[named_style_index] = ns;
     }
     
     return true;
@@ -1115,23 +1149,23 @@ bool style_serializer::write_named_styles(xml_node &cell_styles_node, xml_node &
 {
     styles_node.add_attribute("count", std::to_string(named_styles_.size()));
 
-    for(auto &style : named_styles_)
+    for(auto &key_style : named_styles_)
     {
         auto xf_node = styles_node.add_child("xf");
-        write_named_style(style, xf_node);
+        write_named_style(key_style.second, xf_node);
     }
     
     cell_styles_node.add_attribute("count", std::to_string(named_styles_.size()));
 
-    for(auto &style : named_styles_)
+    for(auto &key_style : named_styles_)
     {
         auto cell_style_node = cell_styles_node.add_child("cellStyle");
         
-        cell_style_node.add_attribute("name", style.get_name());
-//        cell_style_node.add_attribute("xfId", std::to_string(style.get_format_id()));
-        cell_style_node.add_attribute("builtinId", std::to_string(style.get_builtin_id()));
+        cell_style_node.add_attribute("name", key_style.second.get_name());
+        cell_style_node.add_attribute("xfId", std::to_string(key_style.first));
+        cell_style_node.add_attribute("builtinId", std::to_string(key_style.second.get_builtin_id()));
         
-        if (style.get_hidden())
+        if (key_style.second.get_hidden())
         {
             cell_style_node.add_attribute("hidden", "1");
         }
@@ -1253,9 +1287,29 @@ bool style_serializer::write_number_formats(xml_node &number_formats_node) const
     return true;
 }
 
-bool style_serializer::read_named_styles(const xlnt::xml_node &named_styles_node, const xlnt::xml_node &cell_styles_node)
+const std::vector<border> &style_serializer::get_borders() const
 {
-    return false;
+    return borders_;
+}
+
+const std::vector<fill> &style_serializer::get_fills() const
+{
+    return fills_;
+}
+
+const std::vector<font> &style_serializer::get_fonts() const
+{
+    return fonts_;
+}
+
+const std::vector<number_format> &style_serializer::get_number_formats() const
+{
+    return number_formats_;
+}
+
+const std::vector<color> &style_serializer::get_colors() const
+{
+    return colors_;
 }
 
 } // namespace xlnt
diff --git a/source/serialization/tests/test_style_writer.hpp b/source/serialization/tests/test_style_writer.hpp
index fdece5ad..72b7519f 100644
--- a/source/serialization/tests/test_style_writer.hpp
+++ b/source/serialization/tests/test_style_writer.hpp
@@ -11,10 +11,11 @@ public:
     void test_write_number_formats()
     {
         xlnt::workbook wb;
-        wb.add_number_format(xlnt::number_format("YYYY"));
+        wb.get_active_sheet().get_cell("A1").set_number_format(xlnt::number_format("YYYY"));
         xlnt::style_serializer writer(wb);
         xlnt::xml_document observed;
-        writer.write_number_formats(observed.add_child("numFmts"));
+        auto num_fmts_node = observed.add_child("numFmts");
+        writer.write_number_formats(num_fmts_node);
         std::string expected =
         "    <numFmts count=\"1\">"
         "    <numFmt formatCode=\"YYYY\" numFmtId=\"164\"></numFmt>"
diff --git a/source/styles/cell_style.cpp b/source/styles/cell_style.cpp
index 083bfd8b..a42646e0 100644
--- a/source/styles/cell_style.cpp
+++ b/source/styles/cell_style.cpp
@@ -56,27 +56,24 @@ cell_style &cell_style::operator=(const cell_style &other)
 
 std::string cell_style::to_hash_string() const
 {
-    std::string hash_string("style");
+    auto hash_string = common_style::to_hash_string();
+    hash_string.append(":cell_style:");
     
-    hash_string.append(std::to_string(alignment_.apply()));
-    hash_string.append(alignment_.apply() ? std::to_string(alignment_.hash()) : " ");
-
-    hash_string.append(std::to_string(border_.apply()));
-    hash_string.append(border_.apply() ? std::to_string(border_.hash()) : " ");
-
-    hash_string.append(std::to_string(font_.apply()));
-    hash_string.append(font_.apply() ? std::to_string(font_.hash()) : " ");
-
-    hash_string.append(std::to_string(fill_.apply()));
-    hash_string.append(fill_.apply() ? std::to_string(fill_.hash()) : " ");
-
-    hash_string.append(std::to_string(number_format_.apply()));
-    hash_string.append(number_format_.apply() ? std::to_string(number_format_.hash()) : " ");
-
-    hash_string.append(std::to_string(protection_.apply()));
-    hash_string.append(protection_.apply() ? std::to_string(protection_.hash()) : " ");
+    if (!named_style_name_.empty())
+    {
+        hash_string.append(named_style_name_);
+    }
+    else
+    {
+        hash_string.append(":");
+    }
 
     return hash_string;
 }
 
+void cell_style::set_named_style(const std::string &style_name)
+{
+    named_style_name_ = style_name;
+}
+
 } // namespace xlnt
diff --git a/source/styles/common_style.cpp b/source/styles/common_style.cpp
index 98cf423f..c738b145 100644
--- a/source/styles/common_style.cpp
+++ b/source/styles/common_style.cpp
@@ -30,9 +30,27 @@ common_style::common_style()
 }
 
 common_style::common_style(const common_style &other)
+    : alignment_(other.alignment_),
+      border_(other.border_),
+      fill_(other.fill_),
+      font_(other.font_),
+      number_format_(other.number_format_),
+      protection_(other.protection_)
 {
 }
 
+common_style &common_style::operator=(const xlnt::common_style &other)
+{
+    alignment_ = other.alignment_;
+    border_ = other.border_;
+    fill_ = other.fill_;
+    font_ = other.font_;
+    number_format_ = other.number_format_;
+    protection_ = other.protection_;
+
+    return *this;
+}
+
 alignment &common_style::get_alignment()
 {
     return alignment_;
@@ -46,6 +64,7 @@ const alignment &common_style::get_alignment() const
 void common_style::set_alignment(const xlnt::alignment &new_alignment)
 {
     alignment_ = new_alignment;
+    alignment_.apply(true);
 }
 
 number_format &common_style::get_number_format()
@@ -61,6 +80,7 @@ const number_format &common_style::get_number_format() const
 void common_style::set_number_format(const xlnt::number_format &new_number_format)
 {
     number_format_ = new_number_format;
+    number_format_.apply(true);
 }
 
 border &common_style::get_border()
@@ -76,6 +96,7 @@ const border &common_style::get_border() const
 void common_style::set_border(const xlnt::border &new_border)
 {
     border_ = new_border;
+    border_.apply(true);
 }
 
 fill &common_style::get_fill()
@@ -91,6 +112,7 @@ const fill &common_style::get_fill() const
 void common_style::set_fill(const xlnt::fill &new_fill)
 {
     fill_ = new_fill;
+    fill_.apply(true);
 }
 
 font &common_style::get_font()
@@ -106,6 +128,7 @@ const font &common_style::get_font() const
 void common_style::set_font(const xlnt::font &new_font)
 {
     font_ = new_font;
+    font_.apply(true);
 }
 
 protection &common_style::get_protection()
@@ -121,11 +144,32 @@ const protection &common_style::get_protection() const
 void common_style::set_protection(const xlnt::protection &new_protection)
 {
     protection_ = new_protection;
+    protection_.apply(true);
 }
 
 std::string common_style::to_hash_string() const
 {
-    return "common_style";
+    std::string hash_string("common_style:");
+    
+    hash_string.append(std::to_string(alignment_.apply()));
+    hash_string.append(alignment_.apply() ? std::to_string(alignment_.hash()) : ":");
+
+    hash_string.append(std::to_string(border_.apply()));
+    hash_string.append(border_.apply() ? std::to_string(border_.hash()) : ":");
+
+    hash_string.append(std::to_string(font_.apply()));
+    hash_string.append(font_.apply() ? std::to_string(font_.hash()) : ":");
+
+    hash_string.append(std::to_string(fill_.apply()));
+    hash_string.append(fill_.apply() ? std::to_string(fill_.hash()) : ":");
+
+    hash_string.append(std::to_string(number_format_.apply()));
+    hash_string.append(number_format_.apply() ? std::to_string(number_format_.hash()) : ":");
+
+    hash_string.append(std::to_string(protection_.apply()));
+    hash_string.append(protection_.apply() ? std::to_string(protection_.hash()) : ":");
+    
+    return hash_string;
 }
 
 } // namespace xlnt
diff --git a/source/styles/named_style.cpp b/source/styles/named_style.cpp
index 3e599651..e10d10ef 100644
--- a/source/styles/named_style.cpp
+++ b/source/styles/named_style.cpp
@@ -26,13 +26,30 @@
 namespace xlnt {
 
 named_style::named_style()
+    : hidden_(false),
+      builtin_id_(0)
 {
 }
 
 named_style::named_style(const named_style &other)
+    : common_style(other),
+      name_(other.name_),
+      hidden_(other.hidden_),
+      builtin_id_(other.builtin_id_)
 {
 }
 
+named_style &named_style::operator=(const named_style &other)
+{
+    common_style::operator=(other);
+    
+    name_ = other.name_;
+    hidden_ = other.hidden_;
+    builtin_id_ = other.builtin_id_;
+    
+    return *this;
+}
+
 bool named_style::get_hidden() const
 {
     return hidden_;
diff --git a/source/styles/number_format.cpp b/source/styles/number_format.cpp
index 525d595d..1f1be61f 100644
--- a/source/styles/number_format.cpp
+++ b/source/styles/number_format.cpp
@@ -1095,7 +1095,7 @@ std::string number_format::to_hash_string() const
 {
     std::string hash_string("number_format");
     
-    hash_string.append(std::to_string(id_));
+//    hash_string.append(std::to_string(id_));
     hash_string.append(format_string_);
 
     return hash_string;
diff --git a/source/styles/tests/test_stylesheet.hpp b/source/styles/tests/test_stylesheet.hpp
index 981b2496..de95d9db 100644
--- a/source/styles/tests/test_stylesheet.hpp
+++ b/source/styles/tests/test_stylesheet.hpp
@@ -57,7 +57,7 @@ public:
         xlnt::workbook wb;
         xlnt::style_serializer s(wb);
         TS_ASSERT(s.read_stylesheet(doc));
-        TS_ASSERT_EQUALS(wb.get_number_formats().size(), 1);
+        TS_ASSERT_EQUALS(s.get_number_formats().size(), 1);
     }
 
     void test_from_complex()
@@ -68,10 +68,10 @@ public:
         xlnt::workbook wb;
         xlnt::style_serializer s(wb);
         TS_ASSERT(s.read_stylesheet(doc));
-        TS_ASSERT_EQUALS(wb.get_borders().size(), 7);
-        TS_ASSERT_EQUALS(wb.get_fills().size(), 6);
-        TS_ASSERT_EQUALS(wb.get_fonts().size(), 8);
-        TS_ASSERT_EQUALS(wb.get_number_formats().size(), 1);
+        TS_ASSERT_EQUALS(s.get_borders().size(), 7);
+        TS_ASSERT_EQUALS(s.get_fills().size(), 6);
+        TS_ASSERT_EQUALS(s.get_fonts().size(), 8);
+        TS_ASSERT_EQUALS(s.get_number_formats().size(), 1);
     }
 
     void test_merge_named_styles()
diff --git a/source/workbook/workbook.cpp b/source/workbook/workbook.cpp
index 14872e2e..87b28be4 100644
--- a/source/workbook/workbook.cpp
+++ b/source/workbook/workbook.cpp
@@ -27,7 +27,6 @@
 #include <set>
 #include <sstream>
 
-#include <xlnt/drawing/drawing.hpp>
 #include <xlnt/packaging/app_properties.hpp>
 #include <xlnt/packaging/document_properties.hpp>
 #include <xlnt/packaging/manifest.hpp>
@@ -86,6 +85,8 @@ workbook::workbook() : d_(new detail::workbook_impl())
     d_->manifest_.add_override_type("/xl/sharedStrings.xml", "application/vnd.openxmlformats-officedocument.spreadsheetml.sharedStrings+xml");
     d_->manifest_.add_override_type("/docProps/core.xml", "application/vnd.openxmlformats-package.core-properties+xml");
     d_->manifest_.add_override_type("/docProps/app.xml", "application/vnd.openxmlformats-officedocument.extended-properties+xml");
+    
+    add_style(cell_style());
 }
 
 workbook::workbook(encoding e) : workbook()
@@ -454,7 +455,6 @@ void workbook::clear()
     d_->worksheets_.clear();
     d_->relationships_.clear();
     d_->active_sheet_index_ = 0;
-    d_->drawings_.clear();
     d_->properties_ = document_properties();
 }
 
@@ -547,6 +547,15 @@ workbook::workbook(const workbook &other) : workbook()
     }
 }
 
+workbook::~workbook()
+{
+}
+
+const std::vector<named_style> &workbook::get_named_styles() const
+{
+    return d_->named_styles_;
+}
+
 bool workbook::get_data_only() const
 {
     return d_->data_only_;
@@ -598,8 +607,17 @@ std::vector<named_range> workbook::get_named_ranges() const
 
 std::size_t workbook::add_style(const cell_style &style)
 {
+    for (std::size_t i = 0; i < d_->cell_styles_.size(); i++)
+    {
+        if (d_->cell_styles_[i] == style)
+        {
+            return i;
+        }
+    }
+    
     d_->cell_styles_.push_back(style);
-    return d_->cell_styles_.size();
+    
+    return d_->cell_styles_.size() - 1;
 }
 
 cell_style &workbook::get_style(std::size_t style_index)
@@ -680,4 +698,14 @@ const std::vector<std::uint8_t> &workbook::get_thumbnail() const
     return d_->thumbnail_;
 }
 
+named_style &workbook::create_named_style(const std::string &name)
+{
+    named_style style;
+    style.set_name(name);
+    
+    d_->named_styles_.push_back(style);
+    
+    return d_->named_styles_.back();
+}
+
 } // namespace xlnt