shell32: Implement insert/paste for item context menus.

dlls/shell32/shell32.rc

@@ -99,6 +99,7 @@ BEGIN
 	  MENUITEM SEPARATOR
 	  MENUITEM "C&ut",		FCIDM_SHVIEW_CUT
 	  MENUITEM "&Copy",		FCIDM_SHVIEW_COPY
+	  MENUITEM "&Paste",		FCIDM_SHVIEW_INSERT
 	  MENUITEM SEPARATOR
 	  MENUITEM "Create &Link",	FCIDM_SHVIEW_CREATELINK
 	  MENUITEM "&Delete",		FCIDM_SHVIEW_DELETE

dlls/shell32/shlview_cmenu.c

@@ -184,6 +184,8 @@ typedef struct
     BOOL desktop;
 } ContextMenu;
 
+static HRESULT DoPaste(ContextMenu *This);
+
 static inline ContextMenu *impl_from_IContextMenu3(IContextMenu3 *iface)
 {
     return CONTAINING_RECORD(iface, ContextMenu, IContextMenu3_iface);
@@ -293,6 +295,30 @@ static UINT max_menu_id(HMENU hmenu, UINT offset, UINT last)
     return max_id;
 }
 
+static BOOL CheckClipboard(void)
+{
+    IDataObject *pda;
+    BOOL ret = FALSE;
+
+    if (SUCCEEDED(OleGetClipboard(&pda)))
+    {
+        STGMEDIUM medium;
+        FORMATETC formatetc;
+
+        /* Set the FORMATETC structure*/
+        InitFormatEtc(formatetc, RegisterClipboardFormatW(CFSTR_SHELLIDLISTW), TYMED_HGLOBAL);
+
+        /* Get the pidls from IDataObject */
+        if (SUCCEEDED(IDataObject_GetData(pda, &formatetc, &medium)))
+        {
+            ReleaseStgMedium(&medium);
+            ret = TRUE;
+        }
+        IDataObject_Release(pda);
+    }
+    return ret;
+}
+
 static HRESULT WINAPI ItemMenu_QueryContextMenu(
 	IContextMenu3 *iface,
 	HMENU hmenu,
@@ -303,6 +329,7 @@ static HRESULT WINAPI ItemMenu_QueryContextMenu(
 {
     ContextMenu *This = impl_from_IContextMenu3(iface);
     INT uIDMax;
+    DWORD attr = SFGAO_CANRENAME;
 
     TRACE("(%p)->(%p %d 0x%x 0x%x 0x%x )\n", This, hmenu, indexMenu, idCmdFirst, idCmdLast, uFlags);
 
@@ -340,6 +367,9 @@ static HRESULT WINAPI ItemMenu_QueryContextMenu(
 
         SetMenuDefaultItem(hmenu, 0, MF_BYPOSITION);
 
+        if (This->apidl && This->cidl == 1)
+            IShellFolder_GetAttributesOf(This->parent, 1, (LPCITEMIDLIST*)This->apidl, &attr);
+
         if(uFlags & ~CMF_CANRENAME)
             RemoveMenu(hmenu, FCIDM_SHVIEW_RENAME - FCIDM_BASE + idCmdFirst, MF_BYCOMMAND);
         else
@@ -350,16 +380,14 @@ static HRESULT WINAPI ItemMenu_QueryContextMenu(
             if (!This->apidl || This->cidl > 1)
                 enable |= MFS_DISABLED;
             else
-            {
-                DWORD attr = SFGAO_CANRENAME;
-
-                IShellFolder_GetAttributesOf(This->parent, 1, (LPCITEMIDLIST*)This->apidl, &attr);
                 enable |= (attr & SFGAO_CANRENAME) ? MFS_ENABLED : MFS_DISABLED;
-            }
 
             EnableMenuItem(hmenu, FCIDM_SHVIEW_RENAME - FCIDM_BASE + idCmdFirst, enable);
         }
 
+        if ((attr & (SFGAO_FILESYSTEM|SFGAO_FOLDER)) != (SFGAO_FILESYSTEM|SFGAO_FOLDER) || !CheckClipboard())
+            RemoveMenu(hmenu, FCIDM_SHVIEW_INSERT - FCIDM_BASE + idCmdFirst, MF_BYCOMMAND);
+
         return MAKE_HRESULT(SEVERITY_SUCCESS, 0, uIDMax-idCmdFirst);
     }
     return MAKE_HRESULT(SEVERITY_SUCCESS, 0, 0);
@@ -1182,6 +1210,10 @@ static HRESULT WINAPI ItemMenu_InvokeCommand(
             TRACE("Verb FCIDM_SHVIEW_CUT\n");
             DoCopyOrCut(This, lpcmi->hwnd, TRUE);
             break;
+        case FCIDM_SHVIEW_INSERT:
+            TRACE("Verb FCIDM_SHVIEW_INSERT\n");
+            DoPaste(This);
+            break;
         case FCIDM_SHVIEW_PROPERTIES:
             TRACE("Verb FCIDM_SHVIEW_PROPERTIES\n");
             DoOpenProperties(This, lpcmi->hwnd);
@@ -1242,6 +1274,9 @@ static HRESULT WINAPI ItemMenu_GetCommandString(IContextMenu3 *iface, UINT_PTR c
         case FCIDM_SHVIEW_COPY:
             cmdW = L"copy";
             break;
+        case FCIDM_SHVIEW_INSERT:
+            cmdW = L"paste";
+            break;
         case FCIDM_SHVIEW_CREATELINK:
             cmdW = L"link";
             break;