Add support for opening files via Finder in OS X.

Update issue #405
Status: Started
Opening from Finder works but Clementine still isn't a "recommended" application.

src/core/mac_startup.h

@@ -4,11 +4,20 @@
 class GlobalShortcuts;
 class QObject;
 
+class PlatformInterface {
+ public:
+  // Called when the application should show itself.
+  virtual void Activate() = 0;
+  virtual bool LoadUrl(const QString& url) = 0;
+
+  virtual ~PlatformInterface() {}
+};
+
 namespace mac {
 
 void MacMain();
 void SetShortcutHandler(GlobalShortcuts* handler);
-void SetApplicationHandler(QObject* handler);
+void SetApplicationHandler(PlatformInterface* handler);
 void CheckForUpdates();
 
 QString GetBundlePath();

src/core/mac_startup.mm

@@ -15,30 +15,31 @@
 
 #include <QCoreApplication>
 #include <QEvent>
-#include <QObject>
+
+#include <QtDebug>
 
 // Capture global media keys on Mac (Cocoa only!)
 // See: http://www.rogueamoeba.com/utm/2007/09/29/apple-keyboard-media-key-event-handling/
 
 @interface MacApplication :NSApplication {
   GlobalShortcuts* shortcut_handler_;
-  QObject* application_handler_;
+  PlatformInterface* application_handler_;
 }
 
 - (GlobalShortcuts*) shortcut_handler;
 - (void) SetShortcutHandler: (GlobalShortcuts*)handler;
 
-- (QObject*) application_handler;
-- (void) SetApplicationHandler: (QObject*)handler;
+- (PlatformInterface*) application_handler;
+- (void) SetApplicationHandler: (PlatformInterface*)handler;
 
 - (void) mediaKeyEvent: (int)key state: (BOOL)state repeat: (BOOL)repeat;
 @end
 
 @interface AppDelegate :NSObject { //<NSApplicationDelegate> {
-  QObject* application_handler_;
+  PlatformInterface* application_handler_;
 }
 
-- (id) initWithHandler: (QObject*)handler;
+- (id) initWithHandler: (PlatformInterface*)handler;
 // NSApplicationDelegate
 - (BOOL) applicationShouldHandleReopen: (NSApplication*)app hasVisibleWindows:(BOOL)flag;
 @end
@@ -52,17 +53,27 @@
   return self;
 }
 
-- (id) initWithHandler: (QObject*)handler {
+- (id) initWithHandler: (PlatformInterface*)handler {
   application_handler_ = handler;
   return self;
 }
 
 - (BOOL) applicationShouldHandleReopen: (NSApplication*)app hasVisibleWindows:(BOOL)flag {
   if (application_handler_) {
-    qApp->postEvent(application_handler_, new QEvent(QEvent::ApplicationActivate));
+    application_handler_->Activate();
   }
   return YES;
 }
+
+- (BOOL) application: (NSApplication*)app openFile:(NSString*)filename {
+  qDebug() << "Wants to open:" << [filename UTF8String];
+
+  if (application_handler_->LoadUrl(QString::fromUtf8([filename UTF8String]))) {
+    return YES;
+  }
+
+  return NO;
+}
 @end
 
 @implementation MacApplication
@@ -83,11 +94,11 @@
   shortcut_handler_ = handler;
 }
 
-- (QObject*) application_handler {
+- (PlatformInterface*) application_handler {
   return application_handler_;
 }
 
-- (void) SetApplicationHandler: (QObject*)handler {
+- (void) SetApplicationHandler: (PlatformInterface*)handler {
   AppDelegate* delegate = [[AppDelegate alloc] initWithHandler:handler];
   [self setDelegate:delegate];
 }
@@ -144,7 +155,7 @@ void SetShortcutHandler(GlobalShortcuts* handler) {
   [NSApp SetShortcutHandler: handler];
 }
 
-void SetApplicationHandler(QObject* handler) {
+void SetApplicationHandler(PlatformInterface* handler) {
   [NSApp SetApplicationHandler: handler];
 }
 

src/ui/mainwindow.cpp

@@ -1169,13 +1169,20 @@ void MainWindow::ForceShowOSD(const Song &song) {
   osd_->SongChanged(song);
 }
 
-bool MainWindow::event(QEvent* event) {
-  // ApplicationActivate is received when the dock is clicked on OS X.
-  if (event->type() == QEvent::ApplicationActivate) {
-    show();
+void MainWindow::Activate() {
+  show();
+}
+
+bool MainWindow::LoadUrl(const QString& path) {
+  // Currently this is only local files.
+  QFileInfo info(path);
+  if (info.exists()) {
+    QList<QUrl> urls;
+    urls << QUrl::fromLocalFile(path);
+    AddFilesToPlaylist(urls);
     return true;
   }
-  return QMainWindow::event(event);
+  return false;
 }
 
 void MainWindow::CheckForUpdates() {