fix wxBitmapComboBox Gtk-CRITICAL assertion `GTK_IS_ENTRY (entry)' failed

[wxWidgets.git] / include / wx / textbuf.h

diff --git a/include/wx/textbuf.h b/include/wx/textbuf.h
index 3dec00b6085bca074b9f90141ab224a066ceef32..a2511b427d59a918b7c280024f697e3fed7ee64f 100644 (file)
--- a/include/wx/textbuf.h
+++ b/include/wx/textbuf.h
@@ -14,12 +14,13 @@
 
 #include "wx/defs.h"
 #include "wx/arrstr.h"
+#include "wx/convauto.h"
 
 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------
 
-// the line termination type (kept wxTextFileType name for compability)
+// the line termination type (kept wxTextFileType name for compatibility)
 enum wxTextFileType
 {
     wxTextFileType_None,  // incomplete (the last line of the file only)
@@ -80,10 +81,10 @@ public:
     bool Create(const wxString& strBufferName);
 
     // Open() also loads buffer in memory on success
-    bool Open(wxMBConv& conv = wxConvUTF8);
+    bool Open(const wxMBConv& conv = wxConvAuto());
 
     // same as Open() but with (another) buffer name
-    bool Open(const wxString& strBufferName, wxMBConv& conv = wxConvUTF8);
+    bool Open(const wxString& strBufferName, const wxMBConv& conv = wxConvAuto());
 
     // closes the buffer and frees memory, losing all changes
     bool Close();
@@ -98,8 +99,10 @@ public:
     size_t GetLineCount() const { return m_aLines.size(); }
 
     // the returned line may be modified (but don't add CR/LF at the end!)
-    wxString& GetLine(size_t n)    const { return (wxString&)m_aLines[n]; }
-    wxString& operator[](size_t n) const { return (wxString&)m_aLines[n]; }
+          wxString& GetLine(size_t n)          { return m_aLines[n]; }
+    const wxString& GetLine(size_t n)    const { return m_aLines[n]; }
+          wxString& operator[](size_t n)       { return m_aLines[n]; }
+    const wxString& operator[](size_t n) const { return m_aLines[n]; }
 
     // the current line has meaning only when you're using
     // GetFirstLine()/GetNextLine() functions, it doesn't get updated when
@@ -114,12 +117,15 @@ public:
 
     // NB: const is commented out because not all compilers understand
     //     'mutable' keyword yet (m_nCurLine should be mutable)
-    wxString& GetFirstLine() /* const */ { return m_aLines[m_nCurLine = 0]; }
-    wxString& GetNextLine()  /* const */ { return m_aLines[++m_nCurLine];   }
+    wxString& GetFirstLine() /* const */
+        { return m_aLines.empty() ? ms_eof : m_aLines[m_nCurLine = 0]; }
+    wxString& GetNextLine()  /* const */
+        { return ++m_nCurLine == m_aLines.size() ? ms_eof
+                                                 : m_aLines[m_nCurLine]; }
     wxString& GetPrevLine()  /* const */
-        { wxASSERT(m_nCurLine > 0); return m_aLines[--m_nCurLine];   }
+        { wxASSERT(m_nCurLine > 0); return m_aLines[--m_nCurLine]; }
     wxString& GetLastLine() /* const */
-        { return m_aLines[m_nCurLine = m_aLines.size() - 1]; }
+        { m_nCurLine = m_aLines.size() - 1; return m_aLines.Last(); }
 
     // get the type of the line (see also GetEOL)
     wxTextFileType GetLineType(size_t n) const { return m_aTypes[n]; }
@@ -128,7 +134,7 @@ public:
     wxTextFileType GuessType() const;
 
     // get the name of the buffer
-    const wxChar *GetName() const { return m_strBufferName.c_str(); }
+    const wxString& GetName() const { return m_strBufferName; }
 
     // add/remove lines
     // ----------------
@@ -158,7 +164,7 @@ public:
     // change the buffer (default argument means "don't change type")
     // possibly in another format
     bool Write(wxTextFileType typeNew = wxTextFileType_None,
-               wxMBConv& conv = wxConvUTF8);
+               const wxMBConv& conv = wxConvAuto());
 
     // dtor
     virtual ~wxTextBuffer();
@@ -168,7 +174,7 @@ protected:
     // -----
 
     // default ctor, use Open(string)
-    wxTextBuffer() { m_isOpened = false; }
+    wxTextBuffer() { m_nCurLine = 0; m_isOpened = false; }
 
     // ctor from filename
     wxTextBuffer(const wxString& strBufferName);
@@ -180,10 +186,11 @@ protected:
     virtual bool OnOpen(const wxString &strBufferName,
                         wxTextBufferOpenMode openmode) = 0;
     virtual bool OnClose() = 0;
-    virtual bool OnRead(wxMBConv& conv) = 0;
-    virtual bool OnWrite(wxTextFileType typeNew, wxMBConv& conv) = 0;
+    virtual bool OnRead(const wxMBConv& conv) = 0;
+    virtual bool OnWrite(wxTextFileType typeNew, const wxMBConv& conv) = 0;
 
-    wxString m_strBufferName;  // name of the buffer
+    static wxString ms_eof;     // dummy string returned at EOF
+    wxString m_strBufferName;   // name of the buffer
 
 private:
     wxArrayLinesType m_aTypes;   // type of each line