Move date formatting from BLocale to BDateFormat

* There is a little code duplication. This will be moved to BFormat once
the time and datetime formatting is also moved out of BLocale
* The way to create a BDateFormat from a BLocale is still open for
discussion. I'm undecided between making BDateFormat a member of
BLocale, or adding a BDateFormat(const BLocale&) constructor.
* Adjust all users of the API.

headers/os/locale/DateFormat.h

@@ -1,29 +1,67 @@
 /*
- * Copyright 2010, Haiku, Inc.
+ * Copyright 2010-2014, Haiku, Inc.
  * Distributed under the terms of the MIT Licence.
  */
 #ifndef _B_DATE_FORMAT_H_
 #define _B_DATE_FORMAT_H_
 
+
 #include <DateTimeFormat.h>
+#include <FormattingConventions.h>
+#include <Language.h>
+#include <Locker.h>
 
 
 class BString;
+class BTimeZone;
 
-class BDateFormat : public BDateTimeFormat {
+
+enum BWeekday {
+	B_WEEKDAY_MONDAY = 1,
+	B_WEEKDAY_TUESDAY,
+	B_WEEKDAY_WEDNESDAY,
+	B_WEEKDAY_THURSDAY,
+	B_WEEKDAY_FRIDAY,
+	B_WEEKDAY_SATURDAY,
+	B_WEEKDAY_SUNDAY,
+};
+
+
+class BDateFormat {
 public:
-								BDateFormat();
+								BDateFormat(const BLanguage* const,
+									const BFormattingConventions* const);
 								BDateFormat(const BDateFormat &other);
 	virtual						~BDateFormat();
 
+	static	const BDateFormat*	Default();
+
 								// formatting
 
-								// no-frills version: Simply appends the
-								// formatted date to the string buffer.
-								// Can fail only with B_NO_MEMORY or B_BAD_VALUE.
-	virtual	status_t 			Format(bigtime_t value, BString* buffer) const;
+			ssize_t				Format(char* string, size_t maxSize,
+									time_t time, BDateFormatStyle style) const;
+			status_t			Format(BString* string, time_t time,
+									BDateFormatStyle style,
+									const BTimeZone* timeZone = NULL) const;
+			status_t			Format(BString* string,
+									int*& fieldPositions, int& fieldCount,
+									time_t time, BDateFormatStyle style) const;
 
-								// TODO: ... all, basically!
+			status_t			GetFields(BDateElement*& fields,
+									int& fieldCount, BDateFormatStyle style
+									) const;
+
+			status_t			GetStartOfWeek(BWeekday* weekday) const;
+
+								// TODO parsing
+
+private:
+			icu::DateFormat*	_CreateDateFormatter(
+									const BString& format) const;
+
+	mutable	BLocker				fLock;
+			BFormattingConventions	fConventions;
+			BLanguage			fLanguage;
 };
 
 

headers/os/locale/DateTimeFormat.h

@@ -1,16 +1,30 @@
 /*
- * Copyright 2010, Haiku, Inc.
+ * Copyright 2010-2014, Haiku, Inc.
  * Distributed under the terms of the MIT Licence.
  */
 #ifndef _B_DATE_TIME_FORMAT_H_
 #define _B_DATE_TIME_FORMAT_H_
 
+
 #include <Format.h>
 #include <FormatParameters.h>
 
 
 class BString;
 
+
+enum BDateElement {
+	B_DATE_ELEMENT_INVALID = B_BAD_DATA,
+	B_DATE_ELEMENT_YEAR = 0,
+	B_DATE_ELEMENT_MONTH,
+	B_DATE_ELEMENT_DAY,
+	B_DATE_ELEMENT_AM_PM,
+	B_DATE_ELEMENT_HOUR,
+	B_DATE_ELEMENT_MINUTE,
+	B_DATE_ELEMENT_SECOND
+};
+
+
 class BDateTimeFormat : public BFormat {
 public:
 								BDateTimeFormat();

headers/os/locale/Locale.h

@@ -7,6 +7,7 @@
 
 
 #include <Collator.h>
+#include <DateTimeFormat.h>
 #include <FormattingConventions.h>
 #include <Language.h>
 #include <Locker.h>
@@ -18,21 +19,11 @@ namespace icu {
 
 
 class BCatalog;
+class BDateFormat;
 class BString;
 class BTimeZone;
 
 
-enum BDateElement {
-	B_DATE_ELEMENT_INVALID = B_BAD_DATA,
-	B_DATE_ELEMENT_YEAR = 0,
-	B_DATE_ELEMENT_MONTH,
-	B_DATE_ELEMENT_DAY,
-	B_DATE_ELEMENT_AM_PM,
-	B_DATE_ELEMENT_HOUR,
-	B_DATE_ELEMENT_MINUTE,
-	B_DATE_ELEMENT_SECOND
-};
-
 enum BNumberElement {
 	B_NUMBER_ELEMENT_INVALID = B_BAD_DATA,
 	B_NUMBER_ELEMENT_INTEGER = 0,
@@ -41,18 +32,6 @@ enum BNumberElement {
 };
 
 
-// TODO: move this to BCalendar (should we ever have that) or BDate
-enum BWeekday {
-	B_WEEKDAY_MONDAY = 1,
-	B_WEEKDAY_TUESDAY,
-	B_WEEKDAY_WEDNESDAY,
-	B_WEEKDAY_THURSDAY,
-	B_WEEKDAY_FRIDAY,
-	B_WEEKDAY_SATURDAY,
-	B_WEEKDAY_SUNDAY,
-};
-
-
 class BLocale {
 public:
 								BLocale(const BLanguage* language = NULL,
@@ -78,11 +57,6 @@ public:
 			// see definitions in LocaleStrings.h
 			const char*			GetString(uint32 id) const;
 
-			void				FormatString(char* target, size_t maxSize,
-									char* fmt, ...) const;
-			void				FormatString(BString* buffer, char* fmt,
-									...) const;
-
 								// DateTime
 
 								// TODO: drop some of these once BDateTimeFormat
@@ -95,24 +69,6 @@ public:
 									BTimeFormatStyle timeStyle,
 									const BTimeZone* timeZone = NULL) const;
 
-								// Date
-
-								// TODO: drop some of these once BDateFormat
-								//       has been implemented!
-			ssize_t				FormatDate(char* string, size_t maxSize,
-									time_t time, BDateFormatStyle style) const;
-			status_t			FormatDate(BString* string, time_t time,
-									BDateFormatStyle style,
-									const BTimeZone* timeZone = NULL) const;
-			status_t			FormatDate(BString* string,
-									int*& fieldPositions, int& fieldCount,
-									time_t time, BDateFormatStyle style) const;
-			status_t			GetDateFields(BDateElement*& fields,
-									int& fieldCount, BDateFormatStyle style
-									) const;
-
-			status_t			GetStartOfWeek(BWeekday* weekday) const;
-
 								// Time
 
 								// TODO: drop some of these once BTimeFormat

headers/os/locale/LocaleRoster.h

@@ -16,6 +16,7 @@ class BBitmap;
 class BCatalog;
 class BCollator;
 class BCountry;
+class BDateFormat;
 class BFormattingConventions;
 class BLanguage;
 class BLocale;
@@ -78,6 +79,7 @@ public:
 									// (that needs to link with liblocalestub.a)
 
 			const BLocale*		GetDefaultLocale() const;
+			const BDateFormat*	GetDefaultDateFormat() const;
 
 			bool				IsFilesystemTranslationPreferred() const;
 

headers/private/locale/LocaleRosterData.h

@@ -7,6 +7,7 @@
 
 
 #include <Collator.h>
+#include <DateFormat.h>
 #include <FormattingConventions.h>
 #include <image.h>
 #include <Language.h>
@@ -37,6 +38,7 @@ struct LocaleRosterData {
 
 			BLocale				fDefaultLocale;
 			BTimeZone			fDefaultTimeZone;
+			BDateFormat			fDefaultDateFormat;
 
 			bool				fIsFilesystemTranslationPreferred;
 

headers/private/shared/CalendarView.h

@@ -9,6 +9,7 @@
 #include "DateTime.h"
 
 
+#include <DateFormat.h>
 #include <Invoker.h>
 #include <List.h>
 #include <Locale.h>