2b5f62a0b2
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@18040 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
577 lines
24 KiB
C++
577 lines
24 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// Name: list.h
|
|
// Purpose: wxList, wxStringList classes
|
|
// Author: Julian Smart
|
|
// Modified by: VZ at 16/11/98: WX_DECLARE_LIST() and typesafe lists added
|
|
// Created: 29/01/98
|
|
// RCS-ID: $Id$
|
|
// Copyright: (c) 1998 Julian Smart
|
|
// Licence: wxWindows license
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
/*
|
|
All this is quite ugly but serves two purposes:
|
|
1. Be almost 100% compatible with old, untyped, wxList class
|
|
2. Ensure compile-time type checking for the linked lists
|
|
|
|
The idea is to have one base class (wxListBase) working with "void *" data,
|
|
but to hide these untyped functions - i.e. make them protected, so they
|
|
can only be used from derived classes which have inline member functions
|
|
working with right types. This achieves the 2nd goal. As for the first one,
|
|
we provide a special derivation of wxListBase called wxList which looks just
|
|
like the old class.
|
|
*/
|
|
|
|
#ifndef _WX_LISTH__
|
|
#define _WX_LISTH__
|
|
|
|
#if defined(__GNUG__) && !defined(__APPLE__)
|
|
#pragma interface "list.h"
|
|
#endif
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// headers
|
|
// -----------------------------------------------------------------------------
|
|
|
|
#include "wx/defs.h"
|
|
#include "wx/object.h"
|
|
#include "wx/string.h"
|
|
|
|
// due to circular header dependencies this function has to be declared here
|
|
// (normally it's found in utils.h which includes itself list.h...)
|
|
extern WXDLLEXPORT wxChar* copystring(const wxChar *s);
|
|
|
|
class WXDLLEXPORT wxObjectListNode;
|
|
typedef wxObjectListNode wxNode;
|
|
|
|
// undef it to get rid of old, deprecated functions
|
|
#define wxLIST_COMPATIBILITY
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// constants
|
|
// -----------------------------------------------------------------------------
|
|
enum wxKeyType
|
|
{
|
|
wxKEY_NONE,
|
|
wxKEY_INTEGER,
|
|
wxKEY_STRING
|
|
};
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// types
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// type of compare function for list sort operation (as in 'qsort'): it should
|
|
// return a negative value, 0 or positive value if the first element is less
|
|
// than, equal or greater than the second
|
|
extern "C"
|
|
{
|
|
typedef int (* LINKAGEMODE wxSortCompareFunction)(const void *elem1, const void *elem2);
|
|
}
|
|
|
|
//
|
|
typedef int (* LINKAGEMODE wxListIterateFunction)(void *current);
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// key stuff: a list may be optionally keyed on integer or string key
|
|
// -----------------------------------------------------------------------------
|
|
|
|
union wxListKeyValue
|
|
{
|
|
long integer;
|
|
wxChar *string;
|
|
};
|
|
|
|
// a struct which may contain both types of keys
|
|
//
|
|
// implementation note: on one hand, this class allows to have only one function
|
|
// for any keyed operation instead of 2 almost equivalent. OTOH, it's needed to
|
|
// resolve ambiguity which we would otherwise have with wxStringList::Find() and
|
|
// wxList::Find(const char *).
|
|
class WXDLLEXPORT wxListKey
|
|
{
|
|
public:
|
|
// implicit ctors
|
|
wxListKey() : m_keyType(wxKEY_NONE)
|
|
{ }
|
|
wxListKey(long i) : m_keyType(wxKEY_INTEGER)
|
|
{ m_key.integer = i; }
|
|
wxListKey(const wxChar *s) : m_keyType(wxKEY_STRING)
|
|
{ m_key.string = wxStrdup(s); }
|
|
wxListKey(const wxString& s) : m_keyType(wxKEY_STRING)
|
|
{ m_key.string = wxStrdup(s.c_str()); }
|
|
|
|
// accessors
|
|
wxKeyType GetKeyType() const { return m_keyType; }
|
|
const wxChar *GetString() const
|
|
{ wxASSERT( m_keyType == wxKEY_STRING ); return m_key.string; }
|
|
long GetNumber() const
|
|
{ wxASSERT( m_keyType == wxKEY_INTEGER ); return m_key.integer; }
|
|
|
|
// comparison
|
|
// Note: implementation moved to list.cpp to prevent BC++ inline
|
|
// expansion warning.
|
|
bool operator==(wxListKeyValue value) const ;
|
|
|
|
// dtor
|
|
~wxListKey()
|
|
{
|
|
if ( m_keyType == wxKEY_STRING )
|
|
free(m_key.string);
|
|
}
|
|
|
|
private:
|
|
wxKeyType m_keyType;
|
|
wxListKeyValue m_key;
|
|
};
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// wxNodeBase class is a (base for) node in a double linked list
|
|
// -----------------------------------------------------------------------------
|
|
|
|
WXDLLEXPORT_DATA(extern wxListKey) wxDefaultListKey;
|
|
|
|
class WXDLLEXPORT wxListBase;
|
|
|
|
class WXDLLEXPORT wxNodeBase
|
|
{
|
|
friend class wxListBase;
|
|
public:
|
|
// ctor
|
|
wxNodeBase(wxListBase *list = (wxListBase *)NULL,
|
|
wxNodeBase *previous = (wxNodeBase *)NULL,
|
|
wxNodeBase *next = (wxNodeBase *)NULL,
|
|
void *data = NULL,
|
|
const wxListKey& key = wxDefaultListKey);
|
|
|
|
virtual ~wxNodeBase();
|
|
|
|
// FIXME no check is done that the list is really keyed on strings
|
|
const wxChar *GetKeyString() const { return m_key.string; }
|
|
long GetKeyInteger() const { return m_key.integer; }
|
|
|
|
// Necessary for some existing code
|
|
void SetKeyString(wxChar* s) { m_key.string = s; }
|
|
void SetKeyInteger(long i) { m_key.integer = i; }
|
|
|
|
#ifdef wxLIST_COMPATIBILITY
|
|
// compatibility methods
|
|
wxNode *Next() const { return (wxNode *)GetNext(); }
|
|
wxNode *Previous() const { return (wxNode *)GetPrevious(); }
|
|
wxObject *Data() const { return (wxObject *)GetData(); }
|
|
#endif // wxLIST_COMPATIBILITY
|
|
|
|
protected:
|
|
// all these are going to be "overloaded" in the derived classes
|
|
wxNodeBase *GetNext() const { return m_next; }
|
|
wxNodeBase *GetPrevious() const { return m_previous; }
|
|
|
|
void *GetData() const { return m_data; }
|
|
void SetData(void *data) { m_data = data; }
|
|
|
|
// get 0-based index of this node within the list or wxNOT_FOUND
|
|
int IndexOf() const;
|
|
|
|
virtual void DeleteData() { }
|
|
|
|
private:
|
|
// optional key stuff
|
|
wxListKeyValue m_key;
|
|
|
|
void *m_data; // user data
|
|
wxNodeBase *m_next, // next and previous nodes in the list
|
|
*m_previous;
|
|
|
|
wxListBase *m_list; // list we belong to
|
|
|
|
DECLARE_NO_COPY_CLASS(wxNodeBase)
|
|
};
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// a double-linked list class
|
|
// -----------------------------------------------------------------------------
|
|
|
|
class WXDLLEXPORT wxListBase : public wxObject
|
|
{
|
|
friend class WXDLLEXPORT wxNodeBase; // should be able to call DetachNode()
|
|
friend class wxHashTableBase; // should be able to call untyped Find()
|
|
private:
|
|
// common part of all ctors
|
|
void Init(wxKeyType keyType = wxKEY_NONE); // Must be declared before it's used (for VC++ 1.5)
|
|
public:
|
|
// default ctor & dtor
|
|
wxListBase(wxKeyType keyType = wxKEY_NONE)
|
|
{ Init(keyType); }
|
|
virtual ~wxListBase();
|
|
|
|
// accessors
|
|
// count of items in the list
|
|
size_t GetCount() const { return m_count; }
|
|
|
|
// return TRUE if this list is empty
|
|
bool IsEmpty() const { return m_count == 0; }
|
|
|
|
// operations
|
|
|
|
// delete all nodes
|
|
void Clear();
|
|
|
|
// instruct it to destroy user data when deleting nodes
|
|
void DeleteContents(bool destroy) { m_destroy = destroy; }
|
|
|
|
// query if to delete
|
|
bool GetDeleteContents() const
|
|
{ return m_destroy; }
|
|
|
|
// get the keytype
|
|
wxKeyType GetKeyType() const
|
|
{ return m_keyType; }
|
|
|
|
// set the keytype (required by the serial code)
|
|
void SetKeyType(wxKeyType keyType)
|
|
{ wxASSERT( m_count==0 ); m_keyType = keyType; }
|
|
|
|
#ifdef wxLIST_COMPATIBILITY
|
|
int Number() const { return GetCount(); }
|
|
wxNode *First() const { return (wxNode *)GetFirst(); }
|
|
wxNode *Last() const { return (wxNode *)GetLast(); }
|
|
wxNode *Nth(size_t n) const { return (wxNode *)Item(n); }
|
|
#endif // wxLIST_COMPATIBILITY
|
|
|
|
protected:
|
|
|
|
// all methods here are "overloaded" in derived classes to provide compile
|
|
// time type checking
|
|
|
|
// create a node for the list of this type
|
|
virtual wxNodeBase *CreateNode(wxNodeBase *prev, wxNodeBase *next,
|
|
void *data,
|
|
const wxListKey& key = wxDefaultListKey) = 0;
|
|
|
|
// Can't access these from derived classes otherwise (bug in Salford C++?)
|
|
#ifdef __SALFORDC__
|
|
public:
|
|
#endif
|
|
|
|
// ctors
|
|
// from an array
|
|
wxListBase(size_t count, void *elements[]);
|
|
// from a sequence of objects
|
|
wxListBase(void *object, ... /* terminate with NULL */);
|
|
|
|
protected:
|
|
// copy ctor and assignment operator
|
|
wxListBase(const wxListBase& list) : wxObject()
|
|
{ Init(); DoCopy(list); }
|
|
wxListBase& operator=(const wxListBase& list)
|
|
{ Clear(); DoCopy(list); return *this; }
|
|
|
|
// get list head/tail
|
|
wxNodeBase *GetFirst() const { return m_nodeFirst; }
|
|
wxNodeBase *GetLast() const { return m_nodeLast; }
|
|
|
|
// by (0-based) index
|
|
wxNodeBase *Item(size_t index) const;
|
|
|
|
// get the list item's data
|
|
void *operator[](size_t n) const
|
|
{
|
|
wxNodeBase *node = Item(n);
|
|
|
|
return node ? node->GetData() : (wxNodeBase *)NULL;
|
|
}
|
|
|
|
// operations
|
|
// append to end of list
|
|
wxNodeBase *Prepend(void *object)
|
|
{ return (wxNodeBase *)wxListBase::Insert(object); }
|
|
// append to beginning of list
|
|
wxNodeBase *Append(void *object);
|
|
// insert a new item at the beginning of the list
|
|
wxNodeBase *Insert(void *object) { return Insert( (wxNodeBase*)NULL, object); }
|
|
// insert a new item at the given position
|
|
wxNodeBase *Insert(size_t pos, void *object)
|
|
{ return pos == GetCount() ? Append(object)
|
|
: Insert(Item(pos), object); }
|
|
// insert before given node or at front of list if prev == NULL
|
|
wxNodeBase *Insert(wxNodeBase *prev, void *object);
|
|
|
|
// keyed append
|
|
wxNodeBase *Append(long key, void *object);
|
|
wxNodeBase *Append(const wxChar *key, void *object);
|
|
|
|
// removes node from the list but doesn't delete it (returns pointer
|
|
// to the node or NULL if it wasn't found in the list)
|
|
wxNodeBase *DetachNode(wxNodeBase *node);
|
|
// delete element from list, returns FALSE if node not found
|
|
bool DeleteNode(wxNodeBase *node);
|
|
// finds object pointer and deletes node (and object if DeleteContents
|
|
// is on), returns FALSE if object not found
|
|
bool DeleteObject(void *object);
|
|
|
|
// search (all return NULL if item not found)
|
|
// by data
|
|
wxNodeBase *Find(void *object) const;
|
|
|
|
// by key
|
|
wxNodeBase *Find(const wxListKey& key) const;
|
|
|
|
// get 0-based index of object or wxNOT_FOUND
|
|
int IndexOf( void *object ) const;
|
|
|
|
// this function allows the sorting of arbitrary lists by giving
|
|
// a function to compare two list elements. The list is sorted in place.
|
|
void Sort(const wxSortCompareFunction compfunc);
|
|
|
|
// functions for iterating over the list
|
|
void *FirstThat(wxListIterateFunction func);
|
|
void ForEach(wxListIterateFunction func);
|
|
void *LastThat(wxListIterateFunction func);
|
|
|
|
private:
|
|
// helpers
|
|
// common part of copy ctor and assignment operator
|
|
void DoCopy(const wxListBase& list);
|
|
// common part of all Append()s
|
|
wxNodeBase *AppendCommon(wxNodeBase *node);
|
|
// free node's data and node itself
|
|
void DoDeleteNode(wxNodeBase *node);
|
|
|
|
size_t m_count; // number of elements in the list
|
|
bool m_destroy; // destroy user data when deleting list items?
|
|
wxNodeBase *m_nodeFirst, // pointers to the head and tail of the list
|
|
*m_nodeLast;
|
|
|
|
wxKeyType m_keyType; // type of our keys (may be wxKEY_NONE)
|
|
};
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// macros for definition of "template" list type
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// and now some heavy magic...
|
|
|
|
// declare a list type named 'name' and containing elements of type 'T *'
|
|
// (as a by product of macro expansion you also get wx##name##Node
|
|
// wxNode-derived type)
|
|
//
|
|
// implementation details:
|
|
// 1. We define _WX_LIST_ITEM_TYPE_##name typedef to save in it the item type
|
|
// for the list of given type - this allows us to pass only the list name
|
|
// to WX_DEFINE_LIST() even if it needs both the name and the type
|
|
//
|
|
// 2. We redefine all non-type-safe wxList functions with type-safe versions
|
|
// which don't take any space (everything is inline), but bring compile
|
|
// time error checking.
|
|
//
|
|
// 3. The macro which is usually used (WX_DECLARE_LIST) is defined in terms of
|
|
// a more generic WX_DECLARE_LIST_2 macro which, in turn, uses the most
|
|
// generic WX_DECLARE_LIST_3 one. The last macro adds a sometimes
|
|
// interesting capability to store polymorphic objects in the list and is
|
|
// particularly useful with, for example, "wxWindow *" list where the
|
|
// wxWindowBase pointers are put into the list, but wxWindow pointers are
|
|
// retrieved from it.
|
|
|
|
#define WX_DECLARE_LIST_3(T, Tbase, name, nodetype, classexp) \
|
|
typedef int (*wxSortFuncFor_##name)(const T **, const T **); \
|
|
\
|
|
classexp nodetype : public wxNodeBase \
|
|
{ \
|
|
public: \
|
|
nodetype(wxListBase *list = (wxListBase *)NULL, \
|
|
nodetype *previous = (nodetype *)NULL, \
|
|
nodetype *next = (nodetype *)NULL, \
|
|
T *data = (T *)NULL, \
|
|
const wxListKey& key = wxDefaultListKey) \
|
|
: wxNodeBase(list, previous, next, data, key) { } \
|
|
\
|
|
nodetype *GetNext() const \
|
|
{ return (nodetype *)wxNodeBase::GetNext(); } \
|
|
nodetype *GetPrevious() const \
|
|
{ return (nodetype *)wxNodeBase::GetPrevious(); } \
|
|
\
|
|
T *GetData() const \
|
|
{ return (T *)wxNodeBase::GetData(); } \
|
|
void SetData(T *data) \
|
|
{ wxNodeBase::SetData(data); } \
|
|
\
|
|
virtual void DeleteData(); \
|
|
}; \
|
|
\
|
|
classexp name : public wxListBase \
|
|
{ \
|
|
public: \
|
|
typedef nodetype Node; \
|
|
\
|
|
name(wxKeyType keyType = wxKEY_NONE) : wxListBase(keyType) \
|
|
{ } \
|
|
name(size_t count, T *elements[]) \
|
|
: wxListBase(count, (void **)elements) { } \
|
|
\
|
|
name& operator=(const name& list) \
|
|
{ (void) wxListBase::operator=(list); return *this; } \
|
|
\
|
|
nodetype *GetFirst() const \
|
|
{ return (nodetype *)wxListBase::GetFirst(); } \
|
|
nodetype *GetLast() const \
|
|
{ return (nodetype *)wxListBase::GetLast(); } \
|
|
\
|
|
nodetype *Item(size_t index) const \
|
|
{ return (nodetype *)wxListBase::Item(index); } \
|
|
\
|
|
T *operator[](size_t index) const \
|
|
{ \
|
|
nodetype *node = Item(index); \
|
|
return node ? (T*)(node->GetData()) : (T*)NULL; \
|
|
} \
|
|
\
|
|
nodetype *Append(Tbase *object) \
|
|
{ return (nodetype *)wxListBase::Append(object); } \
|
|
nodetype *Insert(Tbase *object) \
|
|
{ return (nodetype *)Insert((nodetype*)NULL, object); } \
|
|
nodetype *Insert(size_t pos, Tbase *object) \
|
|
{ return (nodetype *)wxListBase::Insert(pos, object); } \
|
|
nodetype *Insert(nodetype *prev, Tbase *object) \
|
|
{ return (nodetype *)wxListBase::Insert(prev, object); } \
|
|
\
|
|
nodetype *Append(long key, void *object) \
|
|
{ return (nodetype *)wxListBase::Append(key, object); } \
|
|
nodetype *Append(const wxChar *key, void *object) \
|
|
{ return (nodetype *)wxListBase::Append(key, object); } \
|
|
\
|
|
nodetype *DetachNode(nodetype *node) \
|
|
{ return (nodetype *)wxListBase::DetachNode(node); } \
|
|
bool DeleteNode(nodetype *node) \
|
|
{ return wxListBase::DeleteNode(node); } \
|
|
bool DeleteObject(Tbase *object) \
|
|
{ return wxListBase::DeleteObject(object); } \
|
|
\
|
|
nodetype *Find(Tbase *object) const \
|
|
{ return (nodetype *)wxListBase::Find(object); } \
|
|
\
|
|
virtual nodetype *Find(const wxListKey& key) const \
|
|
{ return (nodetype *)wxListBase::Find(key); } \
|
|
\
|
|
int IndexOf(Tbase *object) const \
|
|
{ return wxListBase::IndexOf(object); } \
|
|
\
|
|
void Sort(wxSortFuncFor_##name func) \
|
|
{ wxListBase::Sort((wxSortCompareFunction)func); } \
|
|
\
|
|
protected: \
|
|
virtual wxNodeBase *CreateNode(wxNodeBase *prev, wxNodeBase *next, \
|
|
void *data, \
|
|
const wxListKey& key = wxDefaultListKey) \
|
|
{ \
|
|
return new nodetype(this, \
|
|
(nodetype *)prev, (nodetype *)next, \
|
|
(T *)data, key); \
|
|
} \
|
|
}
|
|
|
|
#define WX_DECLARE_LIST_2(elementtype, listname, nodename, classexp) \
|
|
WX_DECLARE_LIST_3(elementtype, elementtype, listname, nodename, classexp)
|
|
|
|
#define WX_DECLARE_LIST(elementtype, listname) \
|
|
typedef elementtype _WX_LIST_ITEM_TYPE_##listname; \
|
|
WX_DECLARE_LIST_2(elementtype, listname, wx##listname##Node, class)
|
|
|
|
#define WX_DECLARE_EXPORTED_LIST(elementtype, listname) \
|
|
typedef elementtype _WX_LIST_ITEM_TYPE_##listname; \
|
|
WX_DECLARE_LIST_2(elementtype, listname, wx##listname##Node, class WXDLLEXPORT)
|
|
|
|
#define WX_DECLARE_USER_EXPORTED_LIST(elementtype, listname, usergoo) \
|
|
typedef elementtype _WX_LIST_ITEM_TYPE_##listname; \
|
|
WX_DECLARE_LIST_2(elementtype, listname, wx##listname##Node, class usergoo)
|
|
|
|
// this macro must be inserted in your program after
|
|
// #include <wx/listimpl.cpp>
|
|
#define WX_DEFINE_LIST(name) "don't forget to include listimpl.cpp!"
|
|
|
|
#define WX_DEFINE_EXPORTED_LIST(name) WX_DEFINE_LIST(name)
|
|
#define WX_DEFINE_USER_EXPORTED_LIST(name) WX_DEFINE_LIST(name)
|
|
|
|
|
|
// =============================================================================
|
|
// now we can define classes 100% compatible with the old ones
|
|
// =============================================================================
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// commonly used list classes
|
|
// ----------------------------------------------------------------------------
|
|
|
|
#ifdef wxLIST_COMPATIBILITY
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// wxList compatibility class: in fact, it's a list of wxObjects
|
|
// -----------------------------------------------------------------------------
|
|
|
|
WX_DECLARE_LIST_2(wxObject, wxObjectList, wxObjectListNode, class WXDLLEXPORT);
|
|
|
|
class WXDLLEXPORT wxList : public wxObjectList
|
|
{
|
|
public:
|
|
wxList(int key_type = wxKEY_NONE) : wxObjectList((wxKeyType)key_type) { }
|
|
// this destructor is required for Darwin
|
|
~wxList() { }
|
|
|
|
wxList& operator=(const wxList& list)
|
|
{ (void) wxListBase::operator=(list); return *this; }
|
|
|
|
// compatibility methods
|
|
void Sort(wxSortCompareFunction compfunc) { wxListBase::Sort(compfunc); }
|
|
|
|
wxNode *Member(wxObject *object) const { return (wxNode *)Find(object); }
|
|
|
|
private:
|
|
DECLARE_DYNAMIC_CLASS(wxList)
|
|
};
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// wxStringList class for compatibility with the old code
|
|
// -----------------------------------------------------------------------------
|
|
|
|
WX_DECLARE_LIST_2(wxChar, wxStringListBase, wxStringListNode, class WXDLLEXPORT);
|
|
|
|
class WXDLLEXPORT wxStringList : public wxStringListBase
|
|
{
|
|
public:
|
|
// ctors and such
|
|
// default
|
|
wxStringList() { DeleteContents(TRUE); }
|
|
wxStringList(const wxChar *first ...);
|
|
|
|
// copying the string list: the strings are copied, too (extremely
|
|
// inefficient!)
|
|
wxStringList(const wxStringList& other) : wxStringListBase() { DeleteContents(TRUE); DoCopy(other); }
|
|
wxStringList& operator=(const wxStringList& other)
|
|
{ Clear(); DoCopy(other); return *this; }
|
|
|
|
// operations
|
|
// makes a copy of the string
|
|
wxNode *Add(const wxChar *s)
|
|
{ return (wxNode *)wxStringListBase::Append(copystring(s)); }
|
|
|
|
// Append to beginning of list
|
|
wxNode *Prepend(const wxChar *s)
|
|
{ return (wxNode *)wxStringListBase::Insert(copystring(s)); }
|
|
|
|
bool Delete(const wxChar *s);
|
|
|
|
wxChar **ListToArray(bool new_copies = FALSE) const;
|
|
bool Member(const wxChar *s) const;
|
|
|
|
// alphabetic sort
|
|
void Sort();
|
|
|
|
private:
|
|
void DoCopy(const wxStringList&); // common part of copy ctor and operator=
|
|
|
|
DECLARE_DYNAMIC_CLASS(wxStringList)
|
|
};
|
|
|
|
#endif // wxLIST_COMPATIBILITY
|
|
|
|
#endif
|
|
// _WX_LISTH__
|