// Author: Vadim Zeitlin
// Modified by:
// Created: 22.10.99
-// RCS-ID: $Id$
// Copyright: (c) wxWidgets team
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#if wxUSE_CONTROLS
+#include "wx/arrstr.h"
#include "wx/control.h" // base class
// ----------------------------------------------------------------------------
// implements an extended interface deriving from this one)
// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxItemContainerImmutable
+class WXDLLIMPEXP_CORE wxItemContainerImmutable
{
public:
wxItemContainerImmutable() { }
// accessing strings
// -----------------
- virtual int GetCount() const = 0;
+ virtual unsigned int GetCount() const = 0;
bool IsEmpty() const { return GetCount() == 0; }
- virtual wxString GetString(int n) const = 0;
+ virtual wxString GetString(unsigned int n) const = 0;
wxArrayString GetStrings() const;
- virtual void SetString(int n, const wxString& s) = 0;
+ virtual void SetString(unsigned int n, const wxString& s) = 0;
// finding string natively is either case sensitive or insensitive
// but never both so fall back to this base version for not
// supported search type
virtual int FindString(const wxString& s, bool bCase = false) const
{
- int count = GetCount();
+ unsigned int count = GetCount();
- for ( int i = 0; i < count ; i ++ )
+ for ( unsigned int i = 0; i < count ; ++i )
{
if (GetString(i).IsSameAs( s , bCase ))
- return i;
+ return (int)i;
}
return wxNOT_FOUND;
bool SetStringSelection(const wxString& s);
// return the selected string or empty string if none
- wxString GetStringSelection() const;
+ virtual wxString GetStringSelection() const;
// this is the same as SetSelection( for single-selection controls but
// reads better for multi-selection ones
protected:
-
// check that the index is valid
- inline bool IsValid(int n) const { return n >= 0 && n < GetCount(); }
+ bool IsValid(unsigned int n) const { return n < GetCount(); }
+ bool IsValidInsert(unsigned int n) const { return n <= GetCount(); }
};
-class WXDLLEXPORT wxItemContainer : public wxItemContainerImmutable
+// ----------------------------------------------------------------------------
+// wxItemContainer extends wxItemContainerImmutable interface with methods
+// for adding/removing items.
+//
+// Classes deriving from this one must override DoInsertItems() to implement
+// adding items to the control. This can often be implemented more efficiently
+// than simply looping over the elements and inserting them but if this is not
+// the case, the generic DoInsertItemsInLoop can be used in implementation, but
+// in this case DoInsertItem() needs to be overridden.
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_CORE wxItemContainer : public wxItemContainerImmutable
{
+private:
+ // AppendItems() and InsertItems() helpers just call DoAppend/InsertItems()
+ // after doing some checks
+ //
+ // NB: they're defined here so that they're inlined when used in public part
+ int AppendItems(const wxArrayStringsAdapter& items,
+ void **clientData,
+ wxClientDataType type)
+ {
+ if ( items.IsEmpty() )
+ return wxNOT_FOUND;
+
+ return DoAppendItems(items, clientData, type);
+ }
+
+ int AppendItems(const wxArrayStringsAdapter& items)
+ {
+ return AppendItems(items, NULL, wxClientData_None);
+ }
+
+ int AppendItems(const wxArrayStringsAdapter& items, void **clientData)
+ {
+ wxASSERT_MSG( GetClientDataType() != wxClientData_Object,
+ wxT("can't mix different types of client data") );
+
+ return AppendItems(items, clientData, wxClientData_Void);
+ }
+
+ int AppendItems(const wxArrayStringsAdapter& items,
+ wxClientData **clientData)
+ {
+ wxASSERT_MSG( GetClientDataType() != wxClientData_Void,
+ wxT("can't mix different types of client data") );
+
+ return AppendItems(items, reinterpret_cast<void **>(clientData),
+ wxClientData_Object);
+ }
+
+ int InsertItems(const wxArrayStringsAdapter& items,
+ unsigned int pos,
+ void **clientData,
+ wxClientDataType type)
+ {
+ wxASSERT_MSG( !IsSorted(), wxT("can't insert items in sorted control") );
+
+ wxCHECK_MSG( pos <= GetCount(), wxNOT_FOUND,
+ wxT("position out of range") );
+
+ // not all derived classes handle empty arrays correctly in
+ // DoInsertItems() and besides it really doesn't make much sense to do
+ // this (for append it could correspond to creating an initially empty
+ // control but why would anybody need to insert 0 items?)
+ wxCHECK_MSG( !items.IsEmpty(), wxNOT_FOUND,
+ wxT("need something to insert") );
+
+ return DoInsertItems(items, pos, clientData, type);
+ }
+
+ int InsertItems(const wxArrayStringsAdapter& items, unsigned int pos)
+ {
+ return InsertItems(items, pos, NULL, wxClientData_None);
+ }
+
+ int InsertItems(const wxArrayStringsAdapter& items,
+ unsigned int pos,
+ void **clientData)
+ {
+ wxASSERT_MSG( GetClientDataType() != wxClientData_Object,
+ wxT("can't mix different types of client data") );
+
+ return InsertItems(items, pos, clientData, wxClientData_Void);
+ }
+
+ int InsertItems(const wxArrayStringsAdapter& items,
+ unsigned int pos,
+ wxClientData **clientData)
+ {
+ wxASSERT_MSG( GetClientDataType() != wxClientData_Void,
+ wxT("can't mix different types of client data") );
+
+ return InsertItems(items, pos,
+ reinterpret_cast<void **>(clientData),
+ wxClientData_Object);
+ }
+
public:
wxItemContainer() { m_clientDataItemsType = wxClientData_None; }
virtual ~wxItemContainer();
// adding items
// ------------
+ // append single item, return its position in the control (which can be
+ // different from the last one if the control is sorted)
int Append(const wxString& item)
- { return DoAppend(item); }
+ { return AppendItems(item); }
int Append(const wxString& item, void *clientData)
- { int n = DoAppend(item); SetClientData(n, clientData); return n; }
+ { return AppendItems(item, &clientData); }
int Append(const wxString& item, wxClientData *clientData)
- { int n = DoAppend(item); SetClientObject(n, clientData); return n; }
+ { return AppendItems(item, &clientData); }
+
+ // append several items at once to the control, return the position of the
+ // last item appended
+ int Append(const wxArrayString& items)
+ { return AppendItems(items); }
+ int Append(const wxArrayString& items, void **clientData)
+ { return AppendItems(items, clientData); }
+ int Append(const wxArrayString& items, wxClientData **clientData)
+ { return AppendItems(items, clientData); }
+ int Append(unsigned int n, const wxString *items)
+ { return AppendItems(wxArrayStringsAdapter(n, items)); }
+ int Append(unsigned int n, const wxString *items, void **clientData)
+ { return AppendItems(wxArrayStringsAdapter(n, items), clientData); }
+ int Append(unsigned int n,
+ const wxString *items,
+ wxClientData **clientData)
+ { return AppendItems(wxArrayStringsAdapter(n, items), clientData); }
+
+ // only for RTTI needs (separate name)
+ void AppendString(const wxString& item)
+ { Append(item); }
+
+
+ // inserting items: not for sorted controls!
+ // -----------------------------------------
+
+ // insert single item at the given position, return its effective position
+ int Insert(const wxString& item, unsigned int pos)
+ { return InsertItems(item, pos); }
+ int Insert(const wxString& item, unsigned int pos, void *clientData)
+ { return InsertItems(item, pos, &clientData); }
+ int Insert(const wxString& item, unsigned int pos, wxClientData *clientData)
+ { return InsertItems(item, pos, &clientData); }
+
+ // insert several items at once into the control, return the index of the
+ // last item inserted
+ int Insert(const wxArrayString& items, unsigned int pos)
+ { return InsertItems(items, pos); }
+ int Insert(const wxArrayString& items, unsigned int pos, void **clientData)
+ { return InsertItems(items, pos, clientData); }
+ int Insert(const wxArrayString& items,
+ unsigned int pos,
+ wxClientData **clientData)
+ { return InsertItems(items, pos, clientData); }
+ int Insert(unsigned int n, const wxString *items, unsigned int pos)
+ { return InsertItems(wxArrayStringsAdapter(n, items), pos); }
+ int Insert(unsigned int n,
+ const wxString *items,
+ unsigned int pos,
+ void **clientData)
+ { return InsertItems(wxArrayStringsAdapter(n, items), pos, clientData); }
+ int Insert(unsigned int n,
+ const wxString *items,
+ unsigned int pos,
+ wxClientData **clientData)
+ { return InsertItems(wxArrayStringsAdapter(n, items), pos, clientData); }
+
+
+ // replacing items
+ // ---------------
+
+ void Set(const wxArrayString& items)
+ { Clear(); Append(items); }
+ void Set(const wxArrayString& items, void **clientData)
+ { Clear(); Append(items, clientData); }
+ void Set(const wxArrayString& items, wxClientData **clientData)
+ { Clear(); Append(items, clientData); }
+ void Set(unsigned int n, const wxString *items)
+ { Clear(); Append(n, items); }
+ void Set(unsigned int n, const wxString *items, void **clientData)
+ { Clear(); Append(n, items, clientData); }
+ void Set(unsigned int n, const wxString *items, wxClientData **clientData)
+ { Clear(); Append(n, items, clientData); }
- // only for rtti needs (separate name)
- void AppendString( const wxString& item)
- { Append( item ); }
+ // deleting items
+ // --------------
- // append several items at once to the control
- void Append(const wxArrayString& strings);
+ void Clear();
+ void Delete(unsigned int pos);
- int Insert(const wxString& item, int pos)
- { return DoInsert(item, pos); }
- int Insert(const wxString& item, int pos, void *clientData);
- int Insert(const wxString& item, int pos, wxClientData *clientData);
- // deleting items
- // --------------
+ // various accessors
+ // -----------------
- virtual void Clear() = 0;
- virtual void Delete(int n) = 0;
+ // The control may maintain its items in a sorted order in which case
+ // items are automatically inserted at the right position when they are
+ // inserted or appended. Derived classes have to override this method if
+ // they implement sorting, typically by returning HasFlag(wxXX_SORT)
+ virtual bool IsSorted() const { return false; }
- // misc
- // ----
// client data stuff
- void SetClientData(int n, void* clientData);
- void* GetClientData(int n) const;
+ // -----------------
- void SetClientObject(int n, wxClientData* clientData);
- wxClientData* GetClientObject(int n) const;
+ void SetClientData(unsigned int n, void* clientData);
+ void* GetClientData(unsigned int n) const;
+
+ // SetClientObject() takes ownership of the pointer, GetClientObject()
+ // returns it but keeps the ownership while DetachClientObject() expects
+ // the caller to delete the pointer and also resets the internally stored
+ // one to NULL for this item
+ void SetClientObject(unsigned int n, wxClientData* clientData);
+ wxClientData* GetClientObject(unsigned int n) const;
+ wxClientData* DetachClientObject(unsigned int n);
+
+ // return the type of client data stored in this control: usually it just
+ // returns m_clientDataItemsType but must be overridden in the controls
+ // which delegate their client data storage to another one (e.g. wxChoice
+ // in wxUniv which stores data in wxListBox which it uses anyhow); don't
+ // forget to override SetClientDataType() if you override this one
+ //
+ // NB: for this to work no code should ever access m_clientDataItemsType
+ // directly but only via this function!
+ virtual wxClientDataType GetClientDataType() const
+ { return m_clientDataItemsType; }
+ bool HasClientData() const
+ { return GetClientDataType() != wxClientData_None; }
bool HasClientObjectData() const
- { return m_clientDataItemsType == wxClientData_Object; }
+ { return GetClientDataType() == wxClientData_Object; }
bool HasClientUntypedData() const
- { return m_clientDataItemsType == wxClientData_Void; }
+ { return GetClientDataType() == wxClientData_Void; }
protected:
- virtual int DoAppend(const wxString& item) = 0;
- virtual int DoInsert(const wxString& item, int pos) = 0;
+ // there is usually no need to override this method but you can do it if it
+ // is more convenient to only do "real" insertions in DoInsertItems() and
+ // to implement items appending here (in which case DoInsertItems() should
+ // call this method if pos == GetCount() as it can still be called in this
+ // case if public Insert() is called with such position)
+ virtual int DoAppendItems(const wxArrayStringsAdapter& items,
+ void **clientData,
+ wxClientDataType type)
+ {
+ return DoInsertItems(items, GetCount(), clientData, type);
+ }
- virtual void DoSetItemClientData(int n, void* clientData) = 0;
- virtual void* DoGetItemClientData(int n) const = 0;
- virtual void DoSetItemClientObject(int n, wxClientData* clientData) = 0;
- virtual wxClientData* DoGetItemClientObject(int n) const = 0;
+ // this method must be implemented to insert the items into the control at
+ // position pos which can be GetCount() meaning that the items should be
+ // appended; for the sorted controls the position can be ignored
+ //
+ // the derived classes typically use AssignNewItemClientData() to
+ // associate the data with the items as they're being inserted
+ //
+ // the method should return the index of the position the last item was
+ // inserted into or wxNOT_FOUND if an error occurred
+ virtual int DoInsertItems(const wxArrayStringsAdapter & items,
+ unsigned int pos,
+ void **clientData,
+ wxClientDataType type) = 0;
+
+ // before the client data is set for the first time for the control which
+ // hadn't had it before, DoInitItemClientData() is called which gives the
+ // derived class the possibility to initialize its client data storage only
+ // when client data is really used
+ virtual void DoInitItemClientData() { }
+ virtual void DoSetItemClientData(unsigned int n, void *clientData) = 0;
+ virtual void *DoGetItemClientData(unsigned int n) const = 0;
+
+ virtual void DoClear() = 0;
+ virtual void DoDeleteOneItem(unsigned int pos) = 0;
+
+
+ // methods useful for the derived classes which don't have any better way
+ // of adding multiple items to the control than doing it one by one: such
+ // classes should call DoInsertItemsInLoop() from their DoInsert() and
+ // override DoInsertOneItem() to perform the real insertion
+ virtual int DoInsertOneItem(const wxString& item, unsigned int pos);
+ int DoInsertItemsInLoop(const wxArrayStringsAdapter& items,
+ unsigned int pos,
+ void **clientData,
+ wxClientDataType type);
+
+
+ // helper for DoInsertItems(): n is the index into clientData, pos is the
+ // position of the item in the control
+ void AssignNewItemClientData(unsigned int pos,
+ void **clientData,
+ unsigned int n,
+ wxClientDataType type);
+
+ // free the client object associated with the item at given position and
+ // set it to NULL (must only be called if HasClientObjectData())
+ void ResetItemClientObject(unsigned int n);
+
+ // set the type of the client data stored in this control: override this if
+ // you override GetClientDataType()
+ virtual void SetClientDataType(wxClientDataType clientDataItemsType)
+ {
+ m_clientDataItemsType = clientDataItemsType;
+ }
+private:
// the type of the client data for the items
wxClientDataType m_clientDataItemsType;
};
-// this macro must (unfortunately) be used in any class deriving from both
-// wxItemContainer and wxControl because otherwise there is ambiguity when
-// calling GetClientXXX() functions -- the compiler can't choose between the
-// two versions
-#define wxCONTROL_ITEMCONTAINER_CLIENTDATAOBJECT_RECAST \
- void SetClientData(void *data) \
- { wxControl::SetClientData(data); } \
- void *GetClientData() const \
- { return wxControl::GetClientData(); } \
- void SetClientObject(wxClientData *data) \
- { wxControl::SetClientObject(data); } \
- wxClientData *GetClientObject() const \
- { return wxControl::GetClientObject(); } \
- void SetClientData(int n, void* clientData) \
- { wxItemContainer::SetClientData(n, clientData); } \
- void* GetClientData(int n) const \
- { return wxItemContainer::GetClientData(n); } \
- void SetClientObject(int n, wxClientData* clientData) \
- { wxItemContainer::SetClientObject(n, clientData); } \
- wxClientData* GetClientObject(int n) const \
+// Inheriting directly from a wxWindow-derived class and wxItemContainer
+// unfortunately introduces an ambiguity for all GetClientXXX() methods as they
+// are inherited twice: the "global" versions from wxWindow and the per-item
+// versions taking the index from wxItemContainer.
+//
+// So we need to explicitly resolve them and this helper template class is
+// provided to do it. To use it, simply inherit from wxWindowWithItems<Window,
+// Container> instead of Window and Container interface directly.
+template <class W, class C>
+class wxWindowWithItems : public W, public C
+{
+public:
+ typedef W BaseWindowClass;
+ typedef C BaseContainerInterface;
+
+ wxWindowWithItems() { }
+
+ void SetClientData(void *data)
+ { BaseWindowClass::SetClientData(data); }
+ void *GetClientData() const
+ { return BaseWindowClass::GetClientData(); }
+ void SetClientObject(wxClientData *data)
+ { BaseWindowClass::SetClientObject(data); }
+ wxClientData *GetClientObject() const
+ { return BaseWindowClass::GetClientObject(); }
+
+ void SetClientData(unsigned int n, void* clientData)
+ { wxItemContainer::SetClientData(n, clientData); }
+ void* GetClientData(unsigned int n) const
+ { return wxItemContainer::GetClientData(n); }
+ void SetClientObject(unsigned int n, wxClientData* clientData)
+ { wxItemContainer::SetClientObject(n, clientData); }
+ wxClientData* GetClientObject(unsigned int n) const
{ return wxItemContainer::GetClientObject(n); }
+};
-class WXDLLEXPORT wxControlWithItems : public wxControl, public wxItemContainer
+class WXDLLIMPEXP_CORE wxControlWithItemsBase :
+ public wxWindowWithItems<wxControl, wxItemContainer>
{
public:
- wxControlWithItems() { }
- virtual ~wxControlWithItems();
-
- // we have to redefine these functions here to avoid ambiguities in classes
- // deriving from us which would arise otherwise because both base classses
- // have the methods with the same names - hopefully, a smart compiler can
- // optimize away these simple inline wrappers so we don't suffer much from
- // this
- wxCONTROL_ITEMCONTAINER_CLIENTDATAOBJECT_RECAST
+ wxControlWithItemsBase() { }
// usually the controls like list/combo boxes have their own background
// colour
virtual bool ShouldInheritColours() const { return false; }
+
+ // Implementation only from now on.
+
+ // Generate an event of the given type for the selection change.
+ void SendSelectionChangedEvent(wxEventType eventType);
+
protected:
- // we can't compute our best size before the items are added to the control
- // which is done after calling SetInitialBestSize() (it is called from the
- // base class ctor and the items are added in the derived class ctor), so
- // don't do anything at all here as our size will be changed later anyhow
+ // fill in the client object or data field of the event as appropriate
//
- // of course, all derived classes *must* call SetBestSize() from their
- // ctors for this to work!
- virtual void SetInitialBestSize(const wxSize& WXUNUSED(size)) { }
+ // calls InitCommandEvent() and, if n != wxNOT_FOUND, also sets the per
+ // item client data
+ void InitCommandEventWithItems(wxCommandEvent& event, int n);
private:
- DECLARE_NO_COPY_CLASS(wxControlWithItems)
+ wxDECLARE_NO_COPY_CLASS(wxControlWithItemsBase);
};
-
-// ----------------------------------------------------------------------------
-// inline functions
-// ----------------------------------------------------------------------------
+// define the platform-specific wxControlWithItems class
+#if defined(__WXMSW__)
+ #include "wx/msw/ctrlsub.h"
+#elif defined(__WXMOTIF__)
+ #include "wx/motif/ctrlsub.h"
+#else
+ class WXDLLIMPEXP_CORE wxControlWithItems : public wxControlWithItemsBase
+ {
+ public:
+ wxControlWithItems() { }
+
+ private:
+ DECLARE_ABSTRACT_CLASS(wxControlWithItems)
+ wxDECLARE_NO_COPY_CLASS(wxControlWithItems);
+ };
+#endif
#endif // wxUSE_CONTROLS
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