Notifications preflet and notification_server

Notifications preflet:
-Use sliders instead of text fields for width and timeout
-Remove icon size choice (mini icon looks horrible)
-Consolidate both "Enable" checkboxes into one
-Fix Revert button, remove Apply button, add Defaults button
-All changes to settings saved immediately
-Live example notification message shown when settings changes are made
-Add setting for individual apps to specify whether their notifications
	should be muted
-Remove history list (to be implemented later)

BNotification class:
-BNotification records the signature and name of application that
	created it
-New functions to get source application signature and name

Notification Server:
-Notification pop up view layout fixes and bold font size fix
-Remove notifications history from AppUsage class (will be saved in
	cache instead)
-Remove vector of NotificationView objects which isn't needed
-Get source application info from notification object, not the received
	message which is not reliable

headers/os/app/Notification.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010, Haiku, Inc. All Rights Reserved.
+ * Copyright 2010-2017, Haiku, Inc. All Rights Reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef _NOTIFICATION_H
@@ -34,6 +34,9 @@ public:
 	static	BArchivable*		Instantiate(BMessage* archive);
 	virtual	status_t			Archive(BMessage* archive, bool deep = true) const;
 
+			const char*			SourceSignature() const;
+			const char*			SourceName() const;
+
 			notification_type	Type() const;
 
 			const char*			Group() const;
@@ -73,6 +76,8 @@ public:
 private:
 			status_t			fInitStatus;
 
+			BString				fSourceSignature;
+			BString				fSourceName;
 			notification_type	fType;
 			BString				fGroup;
 			BString				fTitle;

headers/private/notification/AppUsage.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010, Haiku, Inc. All Rights Reserved.
+ * Copyright 2010-2017, Haiku, Inc. All Rights Reserved.
  * Copyright 2008-2009, Pier Luigi Fiorini. All Rights Reserved.
  * Copyright 2004-2008, Michael Davidson. All Rights Reserved.
  * Copyright 2004-2007, Mikael Eiman. All Rights Reserved.
@@ -17,16 +17,13 @@
 #include <String.h>
 
 class BMessage;
-class NotificationReceived;
-
-typedef std::map<BString, NotificationReceived*> notification_t;
 
 class AppUsage : public BFlattenable {
 public:
 										AppUsage();
 										AppUsage(const char* name,
+											const char* signature,
 											bool allow = true);
-										~AppUsage();
 
 	virtual	bool						AllowsTypeCode(type_code code) const;
 	virtual	status_t					Flatten(void* buffer, ssize_t numBytes) const;
@@ -36,17 +33,15 @@ public:
 	virtual	status_t					Unflatten(type_code code, const void* buffer,
 											ssize_t numBytes);
 
-			const char*					Name();
-			bool						Allowed(const char* title, notification_type type);
+			const char*					AppName();
+			const char*					Signature();
 			bool						Allowed();
-			NotificationReceived*		NotificationAt(int32 index);
-			int32						Notifications();
-			void						AddNotification(NotificationReceived* notification);
+			void						SetAllowed(bool allow);
 
 private:
-			BString						fName;
+			BString						fAppName;
+			BString						fSignature;
 			bool						fAllow;
-			notification_t				fNotifications;
 };
 
 #endif	// _APP_USAGE_H

headers/private/notification/Notifications.h

@@ -1,11 +1,12 @@
 /*
- * Copyright 2010-2014, Haiku, Inc. All Rights Reserved.
+ * Copyright 2010-2017, Haiku, Inc. All Rights Reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef _NOTIFICATIONS_H
 #define _NOTIFICATIONS_H
 
 #include <Mime.h>
+#include <String.h>
 
 #define kNotificationServerSignature "application/x-vnd.Haiku-notification_server"
 
@@ -18,18 +19,18 @@ extern const char* kSettingsFile;
 // General settings
 extern const char* kAutoStartName;
 extern const char* kTimeoutName;
+extern const char* kWidthName;
+extern const char* kIconSizeName;
 
 // General default settings
 const bool kDefaultAutoStart = true;
 const int32 kDefaultTimeout = 10;
-
-// Display settings
-extern const char* kWidthName;
-extern const char* kIconSizeName;
-extern const char* kLayoutName;
-
-// Display default settings
+const int32 kMinimumTimeout = 3;
+const int32 kMaximumTimeout = 30;
 const float kDefaultWidth = 300.0f;
+const float kMinimumWidth = 300.0f;
+const float kMaximumWidth = 1000.0f;
+const int32 kWidthStep = 50;
 const icon_size kDefaultIconSize = B_LARGE_ICON;
 
 #endif	// _NOTIFICATIONS_H