TextSearch: Add "Clear history" menu item

Sometimes it's good to go back to a clean slate…

Change-Id: I6252b42c948b1fa9cbe786104a191fb0d4e629c0
Reviewed-on: https://review.haiku-os.org/c/haiku/+/9306
Reviewed-by: waddlesplash <[email protected]>
Tested-by: Commit checker robot <[email protected]>

src/apps/text_search/GrepWindow.cpp

@@ -208,6 +208,13 @@ void GrepWindow::FrameMoved(BPoint origin)
 void GrepWindow::MenusBeginning()
 {
 	fModel->FillHistoryMenu(fHistoryMenu);
+
+	if (fHistoryMenu->CountItems() > 0) {
+		fHistoryMenu->AddSeparatorItem();
+		BMessage* message = new BMessage(MSG_CLEAR_HISTORY);
+		fHistoryMenu->AddItem(new BMenuItem(B_TRANSLATE("Clear history"), message));
+	}
+
 	BWindow::MenusBeginning();
 }
 
@@ -329,6 +336,11 @@ void GrepWindow::MessageReceived(BMessage* message)
 			_OnSearchText();
 			break;
 		}
+
+		case MSG_CLEAR_HISTORY:
+			fModel->ClearHistory();
+			break;
+
 		case MSG_START_CANCEL:
 			_OnStartCancel();
 			break;

src/apps/text_search/Model.cpp

@@ -207,6 +207,20 @@ Model::AddToHistory(const char* text)
 }
 
 
+void
+Model::ClearHistory()
+{
+	BList items;
+	if (!_LoadHistory(items))
+		return;
+
+	items.RemoveItems(0, items.CountItems());
+
+	_SaveHistory(items);
+	_FreeHistory(items);
+}
+
+
 void
 Model::FillHistoryMenu(BMenu* menu) const
 {

src/apps/text_search/Model.h

@@ -33,6 +33,7 @@ enum {
 	MSG_SELECT_HISTORY,
 	MSG_PREV_HISTORY,
 	MSG_NEXT_HISTORY,
+	MSG_CLEAR_HISTORY,
 	MSG_NODE_MONITOR_PULSE,
 	MSG_START_NODE_MONITORING,
 
@@ -70,6 +71,7 @@ public:
 			status_t			SavePrefs();
 
 			void				AddToHistory(const char* text);
+			void				ClearHistory();
 			void				FillHistoryMenu(BMenu* menu) const;
 			BString				GetHistoryItem(int32 index);