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#ifndef __MENU_H__
#define __MENU_H__
#include <string>
#include <vector>
#include <algorithm>
#include "AppHdr.h"
#include "defines.h"
#include "libutil.h"
enum MenuEntryLevel
{
MEL_NONE = -1,
MEL_TITLE,
MEL_SUBTITLE,
MEL_ITEM
};
struct menu_letter
{
char letter;
menu_letter() : letter('a') { }
menu_letter(char c) : letter(c) { }
operator char () const { return letter; }
const menu_letter &operator ++ ()
{
letter = letter == 'z'? 'A' :
letter == 'Z'? 'a' :
letter + 1;
return *this;
}
menu_letter operator ++ (int postfix)
{
menu_letter copy = *this;
this->operator++();
return copy;
}
};
struct item_def;
struct MenuEntry
{
std::string text;
int quantity, selected_qty;
int colour;
std::vector<int> hotkeys;
MenuEntryLevel level;
void *data;
MenuEntry( const std::string &txt = std::string(""),
MenuEntryLevel lev = MEL_ITEM,
int qty = 0,
int hotk = 0 ) :
text(txt), quantity(qty), selected_qty(0), colour(-1),
hotkeys(), level(lev), data(NULL)
{
colour = lev == MEL_ITEM? LIGHTGREY :
lev == MEL_SUBTITLE? BLUE :
WHITE;
if (hotk)
hotkeys.push_back( hotk );
}
virtual ~MenuEntry() { }
void add_hotkey( int key )
{
if (key && !is_hotkey(key))
hotkeys.push_back( key );
}
bool is_hotkey( int key ) const
{
return find( hotkeys.begin(), hotkeys.end(), key ) != hotkeys.end();
}
bool is_primary_hotkey( int key ) const
{
return hotkeys.size()? hotkeys[0] == key : false;
}
virtual std::string get_text() const
{
if (level == MEL_ITEM && hotkeys.size())
{
char buf[300];
snprintf(buf, sizeof buf,
"%c - %s", hotkeys[0], text.c_str());
return std::string(buf);
}
return std::string(level == MEL_SUBTITLE? " " :
level == MEL_ITEM? "" : " ") + text;
}
virtual bool selected() const
{
return selected_qty > 0 && quantity;
}
void select( int qty = -1 )
{
if (selected())
selected_qty = 0;
else if (quantity)
selected_qty = qty == -1? quantity : qty;
}
};
class MenuHighlighter
{
public:
virtual int entry_colour(const MenuEntry *entry) const;
virtual ~MenuHighlighter() { }
};
enum MenuFlag
{
MF_NOSELECT = 0, // No selection is permitted
MF_SINGLESELECT = 1, // Select just one item
MF_MULTISELECT = 2, // Select multiple items
MF_NO_SELECT_QTY = 4, // Disallow partial selections
MF_ANYPRINTABLE = 8, // Any printable character is valid, and
// closes the menu.
MF_SELECT_ANY_PAGE = 16, // Allow selections to occur on any page.
MF_EASY_EXIT = 64
};
///////////////////////////////////////////////////////////////////////
// NOTE
// As a general contract, any pointers you pass to Menu methods are OWNED BY
// THE MENU, and will be deleted by the Menu on destruction. So any pointers
// you pass in MUST be allocated with new, or Crawl will crash.
#define NUMBUFSIZ 10
class Menu
{
public:
Menu( int flags = MF_MULTISELECT );
virtual ~Menu();
void set_flags( int new_flags ) { this->flags = new_flags; }
int get_flags() const { return flags; }
bool is_set( int flag ) const;
bool draw_title_suffix( const std::string &s, bool titlefirst = true );
void update_title();
void set_highlighter( MenuHighlighter *h );
void set_title( MenuEntry *e );
void add_entry( MenuEntry *entry );
void get_selected( std::vector<MenuEntry*> *sel ) const;
void set_select_filter( std::vector<text_pattern> filter )
{
select_filter = filter;
}
unsigned char getkey() const { return lastch; }
void reset();
std::vector<MenuEntry *> show();
public:
typedef std::string (*selitem_tfn)( const std::vector<MenuEntry*> *sel );
selitem_tfn selitem_text;
protected:
MenuEntry *title;
int flags;
int first_entry, y_offset;
int pagesize;
std::vector<MenuEntry*> items;
std::vector<MenuEntry*> *sel;
std::vector<text_pattern> select_filter;
// Class that is queried to colour menu entries.
MenuHighlighter *highlighter;
int num;
unsigned char lastch;
bool alive;
void do_menu( std::vector<MenuEntry*> *selected );
virtual void draw_select_count( int count );
void draw_item( int index ) const;
virtual void draw_title();
void draw_menu( std::vector<MenuEntry*> *selected );
bool page_down();
bool line_down();
bool page_up();
bool line_up();
void deselect_all(bool update_view = true);
void select_items( int key, int qty = -1 );
void select_index( int index, int qty = -1 );
bool is_hotkey(int index, int key );
bool is_selectable(int index) const;
int item_colour(const MenuEntry *me) const;
virtual bool process_key( int keyin );
};
int menu_colour(const std::string &itemtext);
#endif
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