FileManager: add overwrite check for Rename (#7833)

Checks for existing destination file/folder for Rename operation
and asks to overwrite.

frontend/apps/filemanager/filemanager.lua

@@ -321,7 +321,6 @@ function FileManager:setupLayout()
                                     callback = function()
                                         if fileManager.rename_dialog:getInputText() ~= "" then
                                             renameFile(file)
-                                            self:refreshPath()
                                             UIManager:close(fileManager.rename_dialog)
                                         end
                                     end,
@@ -1016,8 +1015,10 @@ function FileManager:deleteFile(file)
 end
 
 function FileManager:renameFile(file)
-    if BaseUtil.basename(file) ~= self.rename_dialog:getInputText() then
-        local dest = BaseUtil.joinPath(BaseUtil.dirname(file), self.rename_dialog:getInputText())
+    local basename = self.rename_dialog:getInputText()
+    if BaseUtil.basename(file) ~= basename then
+        local dest = BaseUtil.joinPath(BaseUtil.dirname(file), basename)
+        local function doRenameFile()
             if self:moveFile(file, dest) then
                 require("readhistory"):updateItemByPath(file, dest) -- (will update "lastfile" if needed)
                 ReadCollection:updateItemByPath(file, dest)
@@ -1057,6 +1058,43 @@ function FileManager:renameFile(file)
                 })
             end
         end
+
+        local mode_dest = lfs.attributes(dest, "mode")
+        local mode_file = lfs.attributes(file, "mode")
+        if mode_dest then
+            local text, ok_text
+            if mode_dest ~= mode_file then
+                if mode_file == "file" then
+                    text = T(_("Folder already exists:\n%1\nFile cannot be renamed."), BD.directory(basename))
+                else
+                    text = T(_("File already exists:\n%1\nFolder cannot be renamed."), BD.filename(basename))
+                end
+                UIManager:show(InfoMessage:new {
+                    text = text,
+                    icon = "notice-warning",
+                })
+            else
+                if mode_file == "file" then
+                    text = T(_("File already exists:\n%1\nOverwrite file?"), BD.filename(basename))
+                    ok_text = _("Overwrite")
+                else
+                    text = T(_("Folder already exists:\n%1\nMove the folder inside it?"), BD.directory(basename))
+                    ok_text = _("Move")
+                end
+                UIManager:show(ConfirmBox:new {
+                    text = text,
+                    ok_text = ok_text,
+                    ok_callback = function()
+                        doRenameFile()
+                        self:onRefresh()
+                    end,
+                })
+            end
+        else
+            doRenameFile()
+            self:onRefresh()
+        end
+    end
 end
 
 function FileManager:getSortingMenuTable()