GuiChanges: provide feedback when there are no more changes

Remove FIXMEs: date and time localisation

src/Author.cpp

@@ -13,6 +13,7 @@
 #include "Author.h"
 
 #include "support/convert.h"
+#include "support/gettext.h"
 #include "support/lassert.h"
 #include "support/lstrings.h"
 
@@ -48,6 +49,15 @@ Author::Author(int buffer_id)
 {}
 
 
+docstring Author::nameAndEmail() const
+{
+	if (email().empty())
+		return name();
+	else
+		return bformat(_("%1$s[[name]] (%2$s[[email]])"), name(), email());
+}
+
+
 bool Author::valid() const
 {
 	//this cannot be equal if the buffer_id was produced by the hash function.

src/Author.h

@@ -32,6 +32,8 @@ public:
 	///
 	docstring email() const { return email_; }
 	///
+	docstring nameAndEmail() const;
+	///
 	int bufferId() const { return buffer_id_; }
 	///
 	void setBufferId(int buffer_id) const { buffer_id_ = buffer_id; }

src/Text.cpp

@@ -67,6 +67,7 @@
 #include "support/lassert.h"
 #include "support/lstrings.h"
 #include "support/lyxalgo.h"
+#include "support/lyxtime.h"
 #include "support/textutils.h"
 
 #include <sstream>
@@ -1900,13 +1901,11 @@ docstring Text::currentState(Cursor const & cur) const
 	Change change = par.lookupChange(cur.pos());
 
 	if (change.changed()) {
-		Author const & a = buf.params().authors().get(change.author);
-		os << _("Change: ") << a.name();
-		if (!a.email().empty())
-			os << " (" << a.email() << ")";
-		// FIXME ctime is english, we should translate that
-		os << _(" at ") << ctime(&change.changetime);
-		os << " : ";
+		docstring const author =
+			buf.params().authors().get(change.author).nameAndEmail();
+		docstring const date = formatted_datetime(change.changetime);
+		os << bformat(_("Changed by %1$s[[author]] on %2$s[[date]]. "),
+		              author, date);
 	}
 
 	// I think we should only show changes from the default

src/frontends/qt4/GuiChanges.cpp

@@ -27,14 +27,13 @@
 #include "FuncRequest.h"
 #include "LyXRC.h"
 
+#include <QDateTime>
 #include <QTextBrowser>
 
 
 namespace lyx {
 namespace frontend {
 
-using support::bformat;
-using support::formatted_time;
 
 GuiChanges::GuiChanges(GuiView & lv)
 	: GuiDialog(lv, "changes", qt_("Merge Changes"))
@@ -56,16 +55,29 @@ GuiChanges::GuiChanges(GuiView & lv)
 
 void GuiChanges::updateContents()
 {
-	docstring text;
-	docstring author = changeAuthor();
-	docstring date = changeDate();
+	bool const changesPresent = buffer().areChangesPresent();
+	nextPB->setEnabled(changesPresent);
+	previousPB->setEnabled(changesPresent);
+	changeTB->setEnabled(changesPresent);
 
-	if (!author.empty())
-		text += bformat(_("Change by %1$s\n\n"), author);
-	if (!date.empty())
-		text += bformat(_("Change made at %1$s\n"), date);
+	Change const & c = bufferview()->getCurrentChange();
+	bool const changePresent = c.type != Change::UNCHANGED;
+	rejectPB->setEnabled(changePresent);
+	acceptPB->setEnabled(changePresent);
 
-	changeTB->setPlainText(toqstr(text));
+	QString text;
+	if (changePresent) {
+		QString const author =
+			toqstr(buffer().params().authors().get(c.author).nameAndEmail());
+		if (!author.isEmpty())
+			text += qt_("Changed by %1\n\n").arg(author);
+
+		QString const date = QDateTime::fromTime_t(c.changetime)
+			                 .toString(Qt::DefaultLocaleLongDate);
+		if (!date.isEmpty())
+			text += qt_("Change made on %1\n").arg(date);
+	}
+	changeTB->setPlainText(text);
 }
 
 
@@ -81,34 +93,6 @@ void GuiChanges::previousChange()
 }
 
 
-docstring GuiChanges::changeDate() const
-{
-	Change const & c = bufferview()->getCurrentChange();
-	if (c.type == Change::UNCHANGED)
-		return docstring();
-
-	// FIXME UNICODE
-	return from_utf8(formatted_time(c.changetime, lyxrc.date_insert_format));
-}
-
-
-docstring GuiChanges::changeAuthor() const
-{
-	Change const & c = bufferview()->getCurrentChange();
-	if (c.type == Change::UNCHANGED)
-		return docstring();
-
-	Author const & a = buffer().params().authors().get(c.author);
-
-	docstring author = a.name();
-
-	if (!a.email().empty())
-		author += " (" + a.email() + ")";
-
-	return author;
-}
-
-
 void GuiChanges::acceptChange()
 {
 	dispatch(FuncRequest(LFUN_CHANGE_ACCEPT));

src/frontends/qt4/GuiChanges.h

@@ -15,6 +15,8 @@
 
 #include "GuiDialog.h"
 #include "ui_ChangesUi.h"
+
+#include "support/debug.h"
 #include "support/docstring.h"
 
 
@@ -52,11 +54,6 @@ private:
 	bool isBufferDependent() const { return true; }
 	/// always true since dispatchParams() is empty
 	bool canApply() const { return true; }
-
-	/// return date of change
-	docstring changeDate() const;
-	/// return author of change
-	docstring changeAuthor() const;
 };
 
 } // namespace frontend

src/support/lyxtime.cpp

@@ -40,6 +40,18 @@ string const formatted_time(time_t t, string const & fmt)
 }
 
 
+docstring formatted_datetime(time_t t, string const & fmt)
+{
+	QString qres;
+	if (fmt.empty())
+		qres = QLocale().toString(QDateTime::fromTime_t(t),
+		                          QLocale::ShortFormat);
+	else
+		qres = QLocale().toString(QDateTime::fromTime_t(t), toqstr(fmt));
+	return qstring_to_ucs4(qres);
+}
+
+
 time_t from_asctime_utc(string t)
 {
 	// Example for the format: "Sun Nov  6 10:39:39 2011\n"

src/support/lyxtime.h

@@ -16,6 +16,8 @@
 #include <time.h>
 #include <string>
 
+#include "strfwd.h"
+
 
 namespace lyx {
 namespace support {
@@ -25,9 +27,17 @@ time_t current_time();
 /** Returns a locale-dependent formatting of the date
  *  and time encoded in \c time. The \p fmt string
  *  holds the formatting arguments of \c strftime.
+ *  Prefer the function formatted_datetime below.
  */
 std::string const formatted_time(time_t t, std::string const & fmt);
 
+/** Returns a locale-dependent formatting of the date and time encoded in \c t
+ *  The \p fmt string holds the formatting arguments of QDateTime::toString().
+ *  If fmt is empty then the formatting of the date and time is itself according
+ *  to the locale.
+ */
+docstring formatted_datetime(time_t t, std::string const & fmt = "");
+
 /**
  * Inverse of asctime(gmtime()).
  */