]> git.saurik.com Git - wxWidgets.git/blobdiff - include/wx/list.h
DrawParagraph changed
[wxWidgets.git] / include / wx / list.h
index 5f762e1625ed996073bfe10883a9c15663eb5937..79a809ed59f31a7a79d32ca048e90a08c29327dd 100644 (file)
@@ -6,7 +6,7 @@
 // Created:     29/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Julian Smart
-// Licence:       wxWindows license
+// Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 
 /*
 // -----------------------------------------------------------------------------
 
 #include "wx/defs.h"
-#include "wx/debug.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 char* copystring(const char *s);
+extern WXDLLEXPORT wxChar* copystring(const wxChar *s);
 
 class WXDLLEXPORT wxObjectListNode;
 typedef wxObjectListNode wxNode;
@@ -65,10 +64,13 @@ enum wxKeyType
 // 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
-typedef int (*wxSortCompareFunction)(const void *elem1, const void *elem2);
+extern "C"
+{
+typedef int (* LINKAGEMODE wxSortCompareFunction)(const void *elem1, const void *elem2);
+}
 
 //
-typedef int (*wxListIterateFunction)(void *current);
+typedef int (* LINKAGEMODE wxListIterateFunction)(void *current);
 
 // -----------------------------------------------------------------------------
 // key stuff: a list may be optionally keyed on integer or string key
@@ -77,7 +79,7 @@ typedef int (*wxListIterateFunction)(void *current);
 union wxListKeyValue
 {
     long integer;
-    char *string;
+    wxChar *string;
 };
 
 // a struct which may contain both types of keys
@@ -90,18 +92,18 @@ class WXDLLEXPORT wxListKey
 {
 public:
     // implicit ctors
-    wxListKey()
-        { m_keyType = wxKEY_NONE; }
-    wxListKey(long i)
-        { m_keyType = wxKEY_INTEGER; m_key.integer = i; }
-    wxListKey(const char *s)
-        { m_keyType = wxKEY_STRING; m_key.string = strdup(s); }
-    wxListKey(const wxString& s)
-        { m_keyType = wxKEY_STRING; m_key.string = strdup(s.c_str()); }
+    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 char *GetString() const
+    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; }
@@ -129,6 +131,8 @@ private:
 
 WXDLLEXPORT_DATA(extern wxListKey) wxDefaultListKey;
 
+class WXDLLEXPORT wxListBase;
+
 class WXDLLEXPORT wxNodeBase
 {
 friend class wxListBase;
@@ -142,12 +146,12 @@ public:
 
     virtual ~wxNodeBase();
 
-    // @@ no check is done that the list is really keyed on strings
-    const char *GetKeyString() const { return m_key.string; }
+    // 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(char* s) { m_key.string = s; }
+    void SetKeyString(wxChar* s) { m_key.string = s; }
     void SetKeyInteger(long i) { m_key.integer = i; }
 
 #ifdef wxLIST_COMPATIBILITY
@@ -179,17 +183,25 @@ private:
                 *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 wxNodeBase; // should be able to call DetachNode()
+friend class 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); }
+    wxListBase(wxKeyType keyType = wxKEY_NONE)
+        { Init(keyType); }
     virtual ~wxListBase();
 
     // accessors
@@ -197,17 +209,17 @@ public:
     size_t GetCount() const { return m_count; }
 
     // 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; }
@@ -216,6 +228,13 @@ public:
     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 index) const { return (wxNode *)Item(index); }
+#endif // wxLIST_COMPATIBILITY
+
 protected:
 
     // all methods here are "overloaded" in derived classes to provide compile
@@ -239,8 +258,8 @@ public:
 
 protected:
         // copy ctor and assignment operator
-    wxListBase(const wxListBase& list)
-        { DoCopy(list); }
+    wxListBase(const wxListBase& list) : wxObject()
+        { Init(); DoCopy(list); }
     wxListBase& operator=(const wxListBase& list)
         { Clear(); DoCopy(list); return *this; }
 
@@ -257,15 +276,22 @@ protected:
 
     // 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 char *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)
@@ -294,11 +320,9 @@ protected:
     void *FirstThat(wxListIterateFunction func);
     void ForEach(wxListIterateFunction func);
     void *LastThat(wxListIterateFunction func);
-    
+
 private:
     // helpers
-        // common part of all ctors
-    void Init(wxKeyType keyType = wxKEY_NONE);
         // common part of copy ctor and assignment operator
     void DoCopy(const wxListBase& list);
         // common part of all Append()s
@@ -322,28 +346,36 @@ private:
 
 // 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-dervied type)
+// wxNode-derived type)
 //
 // implementation details:
-//  1. we define _WX_LIST_ITEM_TYPE_##name typedef to save in it the item type
+//  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 not type-safe wxList functions withtype-safe versions
-//     which don't take any place (everything is inline), but bring compile
+//  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.
-
-#define WX_DECLARE_LIST_2(T, name, nodetype)                                \
-    typedef int (*wxSortFuncFor_##name)(const T *, const T *);              \
+//
+//  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 **);            \
                                                                             \
-    class WXDLLEXPORT nodetype : public wxNodeBase                          \
+    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)                        \
+                 const wxListKey& key = wxDefaultListKey)                   \
             : wxNodeBase(list, previous, next, data, key) { }               \
                                                                             \
         nodetype *GetNext() const                                           \
@@ -359,7 +391,7 @@ private:
         virtual void DeleteData();                                          \
     };                                                                      \
                                                                             \
-    class WXDLLEXPORT name : public wxListBase                                          \
+    classexp name : public wxListBase                                       \
     {                                                                       \
     public:                                                                 \
         typedef nodetype Node;                                              \
@@ -369,6 +401,9 @@ private:
         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                                           \
@@ -383,41 +418,43 @@ private:
             return node ? (T*)(node->GetData()) : (T*)NULL;                 \
         }                                                                   \
                                                                             \
-        nodetype *Append(T *object)                                         \
+        nodetype *Append(Tbase *object)                                     \
             { return (nodetype *)wxListBase::Append(object); }              \
-        nodetype *Insert(T *object)                                         \
+        nodetype *Insert(Tbase *object)                                     \
             { return (nodetype *)Insert((nodetype*)NULL, object); }         \
-        nodetype *Insert(nodetype *prev, T *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 char *key, void *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(T *object)                                        \
+        bool DeleteObject(Tbase *object)                                    \
             { return wxListBase::DeleteObject(object); }                    \
                                                                             \
-        nodetype *Find(T *object) const                                     \
+        nodetype *Find(Tbase *object) const                                 \
             { return (nodetype *)wxListBase::Find(object); }                \
                                                                             \
         virtual nodetype *Find(const wxListKey& key) const                  \
             { return (nodetype *)wxListBase::Find(key); }                   \
                                                                             \
-        int IndexOf( T *object ) const                                      \
+        int IndexOf(Tbase *object) const                                    \
             { return wxListBase::IndexOf(object); }                         \
                                                                             \
         void Sort(wxSortFuncFor_##name func)                                \
             { wxListBase::Sort((wxSortCompareFunction)func); }              \
                                                                             \
     protected:                                                              \
-        wxNodeBase *CreateNode(wxNodeBase *prev, wxNodeBase *next,          \
+        virtual wxNodeBase *CreateNode(wxNodeBase *prev, wxNodeBase *next,  \
                                void *data,                                  \
-                               const wxListKey& key = wxDefaultListKey)          \
+                               const wxListKey& key = wxDefaultListKey)     \
             {                                                               \
                 return new nodetype(this,                                   \
                                     (nodetype *)prev, (nodetype *)next,     \
@@ -425,47 +462,69 @@ private:
             }                                                               \
     }
 
+#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)
+    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);
+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); }
 
-    int Number() const { return GetCount(); }
-    wxNode *First() const { return (wxNode *)GetFirst(); }
-    wxNode *Last() const { return (wxNode *)GetLast(); }
-    wxNode *Nth(size_t index) const { return (wxNode *)Item(index); }
     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(char, wxStringListBase, wxStringListNode);
+WX_DECLARE_LIST_2(wxChar, wxStringListBase, wxStringListNode, class WXDLLEXPORT);
 
 class WXDLLEXPORT wxStringList : public wxStringListBase
 {
@@ -473,35 +532,35 @@ public:
     // ctors and such
         // default
     wxStringList() { DeleteContents(TRUE); }
-    wxStringList(const char *first ...);
+    wxStringList(const wxChar *first ...);
 
         // copying the string list: the strings are copied, too (extremely
         // inefficient!)
-    wxStringList(const wxStringList& other) { DoCopy(other); }
+    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 char *s)
+    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 char *s);
+    bool Delete(const wxChar *s);
 
-    char **ListToArray(bool new_copies = FALSE) const;
-    bool Member(const char *s) const;
+    wxChar **ListToArray(bool new_copies = FALSE) const;
+    bool Member(const wxChar *s) const;
 
     // alphabetic sort
     void Sort();
 
-    // compatibility methods
-    int Number() const { return GetCount(); }
-    wxNode *First() const { return (wxNode *)GetFirst(); }
-    wxNode *Last() const { return (wxNode *)GetLast(); }
-    wxNode *Nth(size_t index) const { return (wxNode *)Item(index); }
-
 private:
     void DoCopy(const wxStringList&); // common part of copy ctor and operator=
+
+    DECLARE_DYNAMIC_CLASS(wxStringList)
 };
 
 #endif // wxLIST_COMPATIBILITY