Chat history in send textbox

History of sent messages is now saved― if the user presses the up or
down arrows, history will be traversed in the textbox.

application/views/SendTextView.cpp

@@ -13,12 +13,11 @@
 
 SendTextView::SendTextView(const char* name, ConversationView* convView)
 	:
-	EnterTextView(name),
+	BTextView(name),
 	fConversationView(convView),
-	fCurrentIndex(0)
+	fCurrentIndex(0),
+	fHistoryIndex(0)
 {
-	SetMessage(BMessage(APP_CHAT));
-	SetTarget(convView);
 }
 
 
@@ -31,14 +30,27 @@ SendTextView::KeyDown(const char* bytes, int32 numBytes)
 		_AutoComplete();
 		return;
 	}
-	// Reset auto-complete state if user typed/sent something
+	// Reset auto-complete state if user typed/sent something other than tab
 	fCurrentIndex = 0;
 	fCurrentWord.SetTo("");
 
+	if ((bytes[0] == B_UP_ARROW) && (modifiers == 0)) {
+		_UpHistory();
+		return;
+	}
+	else if ((bytes[0] == B_DOWN_ARROW) && (modifiers == 0)) {
+		_DownHistory();
+		return;
+	}
+
 	if ((bytes[0] == B_ENTER) && (modifiers & B_COMMAND_KEY))
 		Insert("\n");
+	else if ((bytes[0] == B_ENTER) && (modifiers == 0)) {
+		_AppendHistory();
+		fConversationView->MessageReceived(new BMessage(APP_CHAT));
+	}
 	else
-		EnterTextView::KeyDown(bytes, numBytes);
+		BTextView::KeyDown(bytes, numBytes);
 }
 
 
@@ -79,3 +91,36 @@ SendTextView::_AutoComplete()
 		Select(TextLength(), TextLength());
 	}
 }
+
+
+void
+SendTextView::_AppendHistory()
+{
+	fHistoryIndex = 0;
+	fHistory.Add(BString(Text()), 0);
+	if (fHistory.CountStrings() == 21)
+		fHistory.Remove(20);
+}
+
+
+void
+SendTextView::_UpHistory()
+{
+	if (fHistoryIndex == 0 && TextLength() > 0)
+		_AppendHistory();
+
+	if (fHistoryIndex < fHistory.CountStrings()) {
+		fHistoryIndex++;
+		SetText(fHistory.StringAt(fHistoryIndex - 1));
+	}
+}
+
+
+void
+SendTextView::_DownHistory()
+{
+	if (fHistoryIndex > 1) {
+		fHistoryIndex--;
+		SetText(fHistory.StringAt(fHistoryIndex - 1));
+	}
+}

application/views/SendTextView.h

@@ -5,12 +5,13 @@
 #ifndef _SEND_TEXT_VIEW_H
 #define _SEND_TEXT_VIEW_H
 
-#include <libinterface/EnterTextView.h>
+#include <StringList.h>
+#include <TextView.h>
 
 #include "ConversationView.h"
 
 
-class SendTextView : public EnterTextView {
+class SendTextView : public BTextView {
 public:
 	SendTextView(const char* name, ConversationView* convView);
 
@@ -19,10 +20,17 @@ public:
 private:
 	void _AutoComplete();
 
+	void _AppendHistory();
+	void _UpHistory();
+	void _DownHistory();
+
 	ConversationView* fConversationView;
 
 	int32 fCurrentIndex;
 	BString fCurrentWord;
+
+	BStringList fHistory;
+	int32 fHistoryIndex;
 };
 
 #endif // _SEND_TEXT_VIEW_H