macOS file panel dialog

dgl/src/WindowPrivateData.cpp

@@ -392,7 +392,6 @@ void Window::PrivateData::idleCallback()
     char* path;
     if (sofdFileDialogGetPath(&path))
     {
-        // TODO ignore null path??
         self->onFileSelected(path);
         sofdFileDialogFree(path);
     }
@@ -481,7 +480,13 @@ bool Window::PrivateData::openFileBrowser(const Window::FileBrowserOptions& opti
     // --------------------------------------------------------------------------
     // show
 
-#ifdef DISTRHO_OS_WINDOWS
+# ifdef DISTRHO_OS_MAC
+    uint flags = 0x0;
+    // TODO flags
+    return puglMacOSFilePanelOpen(view, startDir, title, flags, openPanelCallback);
+# endif
+
+# ifdef DISTRHO_OS_WINDOWS
     // the old and compatible dialog API
     OPENFILENAMEW ofn;
     memset(&ofn, 0, sizeof(ofn));
@@ -528,16 +533,24 @@ bool Window::PrivateData::openFileBrowser(const Window::FileBrowserOptions& opti
         win32SelectedFile = kWin32SelectedFileCancelled;
 
     return true;
-#endif
-#ifdef HAVE_X11
+# endif
+
+# ifdef HAVE_X11
     uint flags = 0x0;
     // TODO flags
     return sofdFileDialogShow(view, startDir, title, flags, options.width, options.height);
-#endif
+# endif
 
     return false;
 }
-#endif
+
+# ifdef DISTRHO_OS_MAC
+void Window::PrivateData::openPanelCallback(PuglView* const view, const char* const path)
+{
+    ((Window::PrivateData*)puglGetHandle(view))->self->onFileSelected(path);
+}
+# endif
+#endif // ! DGL_FILE_BROWSER_DISABLED
 
 // -----------------------------------------------------------------------
 // modal handling

dgl/src/WindowPrivateData.hpp

@@ -151,6 +151,9 @@ struct Window::PrivateData : IdleCallback {
 #ifndef DGL_FILE_BROWSER_DISABLED
     // file handling
     bool openFileBrowser(const Window::FileBrowserOptions& options);
+# ifdef DISTRHO_OS_MAC
+    static void openPanelCallback(PuglView* view, const char* path);
+# endif
 #endif
 
     // modal handling

dgl/src/pugl.cpp

@@ -342,6 +342,49 @@ void puglFallbackOnResize(PuglView* const view)
 #endif
 }
 
+#ifdef DISTRHO_OS_MAC
+// --------------------------------------------------------------------------------------------------------------------
+// macOS specific, setup file browser dialog
+
+bool puglMacOSFilePanelOpen(PuglView* const view,
+                            const char* const startDir, const char* const title, const uint flags,
+                            openPanelCallback callback)
+{
+    PuglInternals* impl = view->impl;
+
+    NSOpenPanel* const panel = [NSOpenPanel openPanel];
+
+    // TODO flags
+    [panel setCanChooseFiles:YES];
+    [panel setCanChooseDirectories:NO];
+    [panel setAllowsMultipleSelection:NO];
+
+    [panel setDirectoryURL:[NSURL fileURLWithPath:[NSString stringWithUTF8String:startDir]]];
+
+    NSString* titleString = [[NSString alloc]
+        initWithBytes:title
+               length:strlen(title)
+             encoding:NSUTF8StringEncoding];
+    [panel setTitle:titleString];
+
+    [panel beginSheetModalForWindow:(impl->window ? impl->window : [view->impl->wrapperView window])
+                  completionHandler:^(NSInteger result)
+    {
+        if (result == NSModalResponseOK && [[panel URL] isFileURL])
+        {
+            NSString* const path = [[panel URL] path];
+            callback(view, [path UTF8String]);
+        }
+        else
+        {
+            callback(view, nullptr);
+        }
+   }];
+
+    return true;
+}
+#endif
+
 #ifdef DISTRHO_OS_WINDOWS
 // --------------------------------------------------------------------------------------------------------------------
 // win32 specific, call ShowWindow with SW_RESTORE

dgl/src/pugl.hpp

@@ -82,6 +82,12 @@ puglOnDisplayPrepare(PuglView* view);
 PUGL_API void
 puglFallbackOnResize(PuglView* view);
 
+#ifdef DISTRHO_OS_MAC
+// macOS specific, setup file browser dialog
+typedef void (*openPanelCallback)(PuglView* view, const char* path);
+bool puglMacOSFilePanelOpen(PuglView* view, const char* startDir, const char* title, uint flags, openPanelCallback callback);
+#endif
+
 #ifdef DISTRHO_OS_WINDOWS
 // win32 specific, call ShowWindow with SW_RESTORE
 PUGL_API void