regedit: Re-insert the default value item after deleting its data.

programs/regedit/edit.c

@@ -483,7 +483,8 @@ BOOL CreateValue(HWND hwnd, HKEY hKeyRoot, LPCWSTR keyPath, DWORD valueType, LPW
     }
 
     /* Add the new item to the listview */
-    index = AddEntryToList(g_pChildWnd->hListWnd, valueName, valueType, (BYTE *)&valueDword, sizeof(DWORD));
+    index = AddEntryToList(g_pChildWnd->hListWnd, valueName, valueType,
+                           (BYTE *)&valueDword, sizeof(DWORD), -1);
     item.state = LVIS_FOCUSED | LVIS_SELECTED;
     item.stateMask = LVIS_FOCUSED | LVIS_SELECTED;
     SendMessageW(g_pChildWnd->hListWnd, LVM_SETITEMSTATE, index, (LPARAM)&item);

programs/regedit/framewnd.c

@@ -806,7 +806,7 @@ static BOOL _CmdWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
             }
             HeapFree(GetProcessHeap(), 0, keyPath);
         } else if (hWndDelete == g_pChildWnd->hListWnd) {
-            unsigned int num_selected, index;
+            unsigned int num_selected, index, focus_idx;
             WCHAR *keyPath;
 
             if (!(num_selected = SendMessageW(g_pChildWnd->hListWnd, LVM_GETSELECTEDCOUNT, 0, 0L)))
@@ -821,7 +821,9 @@ static BOOL _CmdWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 
             keyPath = GetItemPath(g_pChildWnd->hTreeWnd, 0, &hKeyRoot);
 
+            focus_idx = SendMessageW(g_pChildWnd->hListWnd, LVM_GETNEXTITEM, -1, MAKELPARAM(LVNI_FOCUSED, 0));
             index = SendMessageW(g_pChildWnd->hListWnd, LVM_GETNEXTITEM, -1, MAKELPARAM(LVNI_SELECTED, 0));
+
             while (index != -1)
             {
                 WCHAR *valueName = GetItemText(g_pChildWnd->hListWnd, index);
@@ -832,6 +834,17 @@ static BOOL _CmdWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
                 }
                 HeapFree(GetProcessHeap(), 0, valueName);
                 SendMessageW(g_pChildWnd->hListWnd, LVM_DELETEITEM, index, 0L);
+                /* the default value item is always visible, so add it back in */
+                if (!index)
+                {
+                    AddEntryToList(g_pChildWnd->hListWnd, NULL, REG_SZ, NULL, 0, 0);
+                    if (!focus_idx)
+                    {
+                        LVITEMW item;
+                        item.state = item.stateMask = LVIS_FOCUSED;
+                        SendMessageW(g_pChildWnd->hListWnd, LVM_SETITEMSTATE, 0, (LPARAM)&item);
+                    }
+                }
                 index = SendMessageW(g_pChildWnd->hListWnd, LVM_GETNEXTITEM, -1, MAKELPARAM(LVNI_SELECTED, 0));
             }
             HeapFree(GetProcessHeap(), 0, keyPath);

programs/regedit/listview.c

@@ -157,7 +157,7 @@ void format_value_data(HWND hwndLV, int index, DWORD type, void *data, DWORD siz
     }
 }
 
-int AddEntryToList(HWND hwndLV, WCHAR *Name, DWORD dwValType, void *ValBuf, DWORD dwCount)
+int AddEntryToList(HWND hwndLV, WCHAR *Name, DWORD dwValType, void *ValBuf, DWORD dwCount, int pos)
 {
     LINE_INFO* linfo;
     LVITEMW item;
@@ -178,7 +178,7 @@ int AddEntryToList(HWND hwndLV, WCHAR *Name, DWORD dwValType, void *ValBuf, DWOR
     }
 
     item.mask = LVIF_TEXT | LVIF_PARAM | LVIF_STATE | LVIF_IMAGE;
-    item.iItem = SendMessageW(hwndLV, LVM_GETITEMCOUNT, 0, 0);
+    item.iItem = (pos == -1) ? SendMessageW(hwndLV, LVM_GETITEMCOUNT, 0, 0) : pos;
     item.iSubItem = 0;
     item.state = 0;
     item.stateMask = LVIS_FOCUSED | LVIS_SELECTED;
@@ -557,7 +557,7 @@ BOOL RefreshListView(HWND hwndLV, HKEY hKeyRoot, LPCWSTR keyPath, LPCWSTR highli
 
     valSize = max_val_size;
     if (RegQueryValueExW(hKey, NULL, NULL, &valType, valBuf, &valSize) == ERROR_FILE_NOT_FOUND) {
-        AddEntryToList(hwndLV, NULL, REG_SZ, NULL, 0);
+        AddEntryToList(hwndLV, NULL, REG_SZ, NULL, 0, -1);
     }
     for(index = 0; index < val_count; index++) {
         valNameLen = max_val_name_len;
@@ -566,7 +566,7 @@ BOOL RefreshListView(HWND hwndLV, HKEY hKeyRoot, LPCWSTR keyPath, LPCWSTR highli
         errCode = RegEnumValueW(hKey, index, valName, &valNameLen, NULL, &valType, valBuf, &valSize);
 	if (errCode != ERROR_SUCCESS) goto done;
         valBuf[valSize] = 0;
-        AddEntryToList(hwndLV, valName[0] ? valName : NULL, valType, valBuf, valSize);
+        AddEntryToList(hwndLV, valName[0] ? valName : NULL, valType, valBuf, valSize, -1);
     }
 
     memset(&item, 0, sizeof(item));

programs/regedit/main.h

@@ -118,7 +118,7 @@ extern void UpdateStatusBar(void);
 
 /* listview.c */
 extern void format_value_data(HWND hwndLV, int index, DWORD type, void *data, DWORD size);
-extern int AddEntryToList(HWND hwndLV, WCHAR *Name, DWORD dwValType, void *ValBuf, DWORD dwCount);
+extern int AddEntryToList(HWND hwndLV, WCHAR *Name, DWORD dwValType, void *ValBuf, DWORD dwCount, int pos);
 extern HWND CreateListView(HWND hwndParent, UINT id);
 extern BOOL RefreshListView(HWND hwndLV, HKEY hKeyRoot, LPCWSTR keyPath, LPCWSTR highlightValue);
 extern HWND StartValueRename(HWND hwndLV);