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listbox::reorder_columns implemented by move_column

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This commit is contained in:
qPCR4vir 2018-11-13 19:05:19 +01:00
parent e4b60148e7
commit c0de9ee460
2 changed files with 48 additions and 7 deletions
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9
include/nana/gui/widgets/listbox.hpp
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@ -1464,6 +1464,15 @@ the nana::detail::basic_window member pointer scheme
/// Move column to view_position /// Move column to view_position
void move_column(size_type abs_pos, size_type view_pos); void move_column(size_type abs_pos, size_type view_pos);
/// Sort columns in range first_col to last_col inclusive using the values from a row
void reorder_columns(size_type first_col,
size_type last_col,
index_pair row, bool reverse,
std::function<bool(const std::string &cell1, size_type col1,
const std::string &cell2, size_type col2,
const nana::any *rowval,
bool reverse)> comp);
void column_resizable(bool resizable); void column_resizable(bool resizable);
bool column_resizable() const; bool column_resizable() const;
void column_movable(bool); void column_movable(bool);

32
source/gui/widgets/listbox.cpp
View File

@ -6075,5 +6075,37 @@ namespace nana
internal_scope_guard lock; internal_scope_guard lock;
return _m_ess().header.move_to_view_pos(abs_pos, view_pos, true); return _m_ess().header.move_to_view_pos(abs_pos, view_pos, true);
} }
/// Sort columns in range first_col to last_col inclusive using a row
void listbox::reorder_columns(size_type first_col,
size_type last_col,
index_pair row, bool reverse,
std::function<bool(const std::string &cell1, size_type col1,
const std::string &cell2, size_type col2,
const nana::any *rowval,
bool reverse)> comp)
{
if (first_col<0 || last_col<=first_col)
return;
if (last_col >= column_size())
return;
std::vector<size_type> new_idx;
for(size_type i=first_col; i<=last_col; ++i) new_idx.push_back(i);
const item_proxy & ip_row=this->at(row);
internal_scope_guard lock;
const nana::any *pnany=_m_ess().lister.anyobj(row,false);
std::sort(new_idx.begin(), new_idx.end(), [&](size_type col1,
size_type col2)
{
return comp(ip_row.text(col1), col1,
ip_row.text(col2), col2,
pnany, reverse);
});
for(size_t i=0; i<new_idx.size(); ++i)
{
move_column(new_idx[i],i+first_col);
}
}
//end class listbox //end class listbox
}//end namespace nana }//end namespace nana