Display externally modified status

src/frontends/WorkAreaManager.cpp

@@ -33,10 +33,8 @@ void WorkAreaManager::remove(WorkArea * wa)
 
 void WorkAreaManager::redrawAll(bool update_metrics)
 {
-	iterator it = work_areas_.begin();
-	iterator const en = work_areas_.end();
-	for (; it != en; ++it)
-		(*it)->redraw(update_metrics);
+	for (WorkArea * wa : work_areas_)
+		wa->redraw(update_metrics);
 }
 
 
@@ -50,12 +48,11 @@ void WorkAreaManager::closeAll()
 
 void WorkAreaManager::updateTitles()
 {
-	iterator it = work_areas_.begin();
-	iterator const en = work_areas_.end();
-	for (; it != en; ++it)
-		(*it)->updateWindowTitle();
+	for (WorkArea * wa : work_areas_)
+		wa->updateWindowTitle();
 }
 
+
 } // namespace frontend
 } // namespace lyx
 

src/frontends/WorkAreaManager.h

@@ -38,7 +38,8 @@ public:
 	void redrawAll(bool update_metrics);
 	///
 	void closeAll();
-	/// Update window titles of all users.
+	/// Update window titles of all users and the external modifications
+	/// warning.
 	void updateTitles();
 
 private:

src/frontends/qt4/GuiView.cpp

@@ -1121,6 +1121,12 @@ void GuiView::updateWindowTitle(GuiWorkArea * wa)
 	Buffer const & buf = wa->bufferView().buffer();
 	// Set the windows title
 	docstring title = buf.fileName().displayName(130) + from_ascii("[*]");
+	if (buf.notifiesExternalModification()) {
+		title = bformat(_("%1$s (modified externally)"), title);
+		// If the external modification status has changed, then maybe the status of
+		// buffer-save has changed too.
+		updateToolbars();
+	}
 #ifndef Q_WS_MAC
 	title += from_ascii(" - LyX");
 #endif

src/frontends/qt4/GuiWorkArea.cpp

@@ -251,7 +251,7 @@ GuiWorkArea::Private::Private(GuiWorkArea * parent)
   need_resize_(false), schedule_redraw_(false), preedit_lines_(1),
   pixel_ratio_(1.0),
   completer_(new GuiCompleter(p, p)), dialog_mode_(false),
-  read_only_(false), clean_(true)
+  read_only_(false), clean_(true), externally_modified_(false)
 {
 }
 
@@ -1390,12 +1390,16 @@ QVariant GuiWorkArea::inputMethodQuery(Qt::InputMethodQuery query) const
 void GuiWorkArea::updateWindowTitle()
 {
 	Buffer const & buf = bufferView().buffer();
-	if (buf.fileName() != d->file_name_ || buf.isReadonly() != d->read_only_
-	    || buf.lyxvc().vcstatus() != d->vc_status_ || buf.isClean() != d->clean_) {
+	if (buf.fileName() != d->file_name_
+	    || buf.isReadonly() != d->read_only_
+	    || buf.lyxvc().vcstatus() != d->vc_status_
+	    || buf.isClean() != d->clean_
+	    || buf.notifiesExternalModification() != d->externally_modified_) {
 		d->file_name_ = buf.fileName();
 		d->read_only_ = buf.isReadonly();
 		d->vc_status_ = buf.lyxvc().vcstatus();
 		d->clean_ = buf.isClean();
+		d->externally_modified_ = buf.notifiesExternalModification();
 		Q_EMIT titleChanged(this);
 	}
 }
@@ -2052,9 +2056,14 @@ void TabWorkArea::updateTabTexts()
 		QString tab_tooltip = it->abs();
 		if (buf.isReadonly()) {
 			setTabIcon(tab_index, QIcon(getPixmap("images/", "emblem-readonly", "svgz,png")));
-			tab_tooltip = qt_("%1 (read only)").arg(it->abs());
+			tab_tooltip = qt_("%1 (read only)").arg(tab_tooltip);
 		} else
 			setTabIcon(tab_index, QIcon());
+		if (buf.notifiesExternalModification()) {
+			QString const warn = qt_("%1 (modified externally)");
+			tab_tooltip = warn.arg(tab_tooltip);
+			tab_text += QChar(0x26a0);
+		}
 		setTabText(tab_index, tab_text);
 		setTabToolTip(tab_index, tab_tooltip);
 	}

src/frontends/qt4/GuiWorkArea_Private.h

@@ -196,6 +196,8 @@ struct GuiWorkArea::Private
 	docstring vc_status_;
 	///
 	bool clean_;
+	///
+	bool externally_modified_;
 
 }; // GuiWorkArea
 

src/frontends/qt4/Menus.cpp

@@ -990,6 +990,8 @@ void MenuDefinition::expandDocuments()
 		QString label = toqstr(b.fileName().displayName(20));
 		if (!b.isClean())
 			label += "*";
+		if (b.notifiesExternalModification())
+			label += QChar(0x26a0);
 		if (i < 10)
 			label = QString::number(i) + ". " + label + '|' + QString::number(i);
 		add(MenuItem(MenuItem::Command, label,
@@ -1007,6 +1009,8 @@ void MenuDefinition::expandDocuments()
 			QString label = toqstr(b->fileName().displayName(20));
 			if (!b->isClean())
 				label += "*";
+			if (b->notifiesExternalModification())
+				label += QChar(0x26a0);
 			if (i < 10)
 				label = QString::number(i) + ". " + label + '|' + QString::number(i);
 			item.submenu().add(MenuItem(MenuItem::Command, label,