Move "do you want to overwrite this file?" question inside the FileSelector

Native file dialogs ask this same question too (also they check for
read-only attribute).

src/app/commands/cmd_keyboard_shortcuts.cpp

@@ -388,22 +388,14 @@ private:
   }
 
   void onExport() {
-  again:
-    std::string filename = app::show_file_selector("Export Keyboard Shortcuts", "",
+    std::string filename = app::show_file_selector(
+      "Export Keyboard Shortcuts", "",
       KEYBOARD_FILENAME_EXTENSION, FileSelectorType::Save);
-    if (!filename.empty()) {
-      if (base::is_file(filename)) {
-        int ret = Alert::show("Warning<<File exists, overwrite it?<<%s||&Yes||&No||&Cancel",
-          base::get_file_name(filename).c_str());
-        if (ret == 2)
-          goto again;
-        else if (ret != 1)
+    if (filename.empty())
       return;
-      }
 
     app::KeyboardShortcuts::instance()->exportFile(filename.c_str());
   }
-  }
 
   void onReset() {
     if (Alert::show("Warning"

src/app/commands/cmd_save_file.cpp

@@ -134,45 +134,15 @@ void SaveFileBaseCommand::saveAsDialog(const ContextReader& reader, const char*
     filename = m_filename;
   }
   else {
+    std::string exts = get_writable_extensions();
     filename = document->filename();
 
-    std::string exts = get_writable_extensions();
-
-    for (;;) {
     std::string newfilename = app::show_file_selector(
       dlgTitle, filename, exts, FileSelectorType::Save);
     if (newfilename.empty())
       return;
 
     filename = newfilename;
-
-      // Ask if the user wants overwrite the existent file.
-      int ret = 0;
-      if (base::is_file(filename)) {
-        ret = ui::Alert::show("Warning<<The file already exists, overwrite it?<<%s||&Yes||&No||&Cancel",
-          base::get_file_name(filename).c_str());
-
-        // Check for read-only attribute.
-        if (ret == 1) {
-          if (!confirmReadonly(filename))
-            ret = 2;              // Select file again.
-          else
-            break;
-        }
-      }
-      else
-        break;
-
-      // "yes": we must continue with the operation...
-      if (ret == 1) {
-        break;
-      }
-      // "cancel" or <esc> per example: we back doing nothing
-      else if (ret != 2)
-        return;
-
-      // "no": we must back to select other file-name
-    }
   }
 
   std::string oldFilename;
@@ -202,23 +172,6 @@ void SaveFileBaseCommand::saveAsDialog(const ContextReader& reader, const char*
   }
 }
 
-//static
-bool SaveFileBaseCommand::confirmReadonly(const std::string& filename)
-{
-  if (!base::has_readonly_attr(filename))
-    return true;
-
-  int ret = ui::Alert::show("Warning<<The file is read-only, do you really want to overwrite it?<<%s||&Yes||&No",
-    base::get_file_name(filename).c_str());
-
-  if (ret == 1) {
-    base::remove_readonly_attr(filename);
-    return true;
-  }
-  else
-    return false;
-}
-
 //////////////////////////////////////////////////////////////////////
 
 class SaveFileCommand : public SaveFileBaseCommand {
@@ -248,9 +201,6 @@ void SaveFileCommand::onExecute(Context* context)
     ContextWriter writer(reader);
     Document* documentWriter = writer.document();
 
-    if (!confirmReadonly(documentWriter->filename()))
-      return;
-
     save_document_in_background(context, documentWriter, true,
       m_filenameFormat.c_str());
   }

src/app/commands/cmd_save_file.h

@@ -30,8 +30,6 @@ namespace app {
 
     void saveAsDialog(const ContextReader& reader, const char* dlgTitle, bool markAsSaved);
 
-    static bool confirmReadonly(const std::string& filename);
-
     std::string m_filename;
     std::string m_filenameFormat;
     std::string m_selectedFilename;

src/app/commands/cmd_save_mask.cpp

@@ -48,33 +48,12 @@ void SaveMaskCommand::onExecute(Context* context)
   const ContextReader reader(context);
   const Document* document(reader.document());
   std::string filename = "default.msk";
-  int ret;
 
-  for (;;) {
   filename = app::show_file_selector(
     "Save .msk File", filename, "msk", FileSelectorType::Save);
   if (filename.empty())
     return;
 
-    // Does the file exist?
-    if (base::is_file(filename.c_str())) {
-      /* ask if the user wants overwrite the file? */
-      ret = ui::Alert::show("Warning<<File exists, overwrite it?<<%s||&Yes||&No||&Cancel",
-        base::get_file_name(filename).c_str());
-    }
-    else
-      break;
-
-    /* "yes": we must continue with the operation... */
-    if (ret == 1)
-      break;
-    /* "cancel" or <esc> per example: we back doing nothing */
-    else if (ret != 2)
-      return;
-
-    /* "no": we must back to select other file-name */
-  }
-
   if (save_msk_file(document->mask(), filename.c_str()) != 0)
     ui::Alert::show("Error<<Error saving .msk file<<%s||&Close", filename.c_str());
 }

src/app/commands/cmd_save_palette.cpp

@@ -60,23 +60,10 @@ void SavePaletteCommand::onExecute(Context* context)
   }
   else {
     std::string exts = get_writable_palette_extensions();
-    int ret;
-
-  again:
     filename = app::show_file_selector("Save Palette", "", exts,
                                        FileSelectorType::Save);
     if (filename.empty())
       return;
-
-    if (base::is_file(filename)) {
-      ret = Alert::show("Warning<<File exists, overwrite it?<<%s||&Yes||&No||&Cancel",
-                        base::get_file_name(filename).c_str());
-
-      if (ret == 2)
-        goto again;
-      else if (ret != 1)
-        return;
-    }
   }
 
   if (!save_palette(filename.c_str(), palette))

src/app/file_selector.cpp

@@ -64,7 +64,10 @@ std::string show_file_selector(const std::string& title,
   }
 
   FileSelector fileSelector;
-  return fileSelector.show(title, initialPath, showExtensions);
+  return fileSelector.show(
+    title, initialPath, showExtensions,
+    (type == FileSelectorType::Open ? FileSelector::Open:
+                                      FileSelector::Save));
 }
 
 } // namespace app

src/app/ui/file_selector.cpp

@@ -328,9 +328,11 @@ void FileSelector::goInsideFolder()
   }
 }
 
-std::string FileSelector::show(const std::string& title,
+std::string FileSelector::show(
+  const std::string& title,
   const std::string& initialPath,
-  const std::string& showExtensions)
+  const std::string& showExtensions,
+  Type type)
 {
   std::string result;
 
@@ -515,6 +517,29 @@ again:
       buf += m_fileType->getItemText(m_fileType->getSelectedItemIndex());
     }
 
+    if (type == Save && base::is_file(buf)) {
+      int ret = Alert::show("Warning<<File exists, overwrite it?<<%s||&Yes||&No||&Cancel",
+                            base::get_file_name(buf).c_str());
+      if (ret == 2) {
+        setVisible(true);
+        goto again;
+      }
+      else if (ret == 1) {
+        // Check for read-only attribute
+        if (base::has_readonly_attr(buf)) {
+          ui::Alert::show(
+            "Problem<<The selected file is read-only. Try with other file.||&Go back");
+
+          setVisible(true);
+          goto again;
+        }
+      }
+      // Cancel
+      else if (ret != 1) {
+        return "";
+      }
+    }
+
     // duplicate the buffer to return a new string
     result = buf;
 

src/app/ui/file_selector.h

@@ -27,6 +27,8 @@ namespace app {
 
   class FileSelector : public ui::Window {
   public:
+    enum Type { Open, Save };
+
     FileSelector();
 
     void goBack();
@@ -37,7 +39,8 @@ namespace app {
     // Shows the dialog to select a file in the program.
     std::string show(const std::string& title,
                      const std::string& initialPath,
-      const std::string& showExtensions);
+                     const std::string& showExtensions,
+                     Type type);
 
   private:
     void updateLocation();

src/she/win/native_dialogs.cpp

@@ -93,10 +93,8 @@ public:
 
     if (!m_save)
       ofn.Flags |= OFN_FILEMUSTEXIST;
-#if 0                           // This is asked in custom UI
     else
       ofn.Flags |= OFN_OVERWRITEPROMPT;
-#endif
 
     BOOL res;
     if (m_save)