From b795a471208368d920ff8faafb9c902e8625edbc Mon Sep 17 00:00:00 2001
From: Thunder422 <thunder422@verizon.net>
Date: Tue, 7 Jan 2014 22:30:21 -0500
Subject: [PATCH] program: added append operation to program update

new update append operation (in addition to insert, change, and remove)
is similar to insert except adds the line to the end of the program; is
meant to only be used when loading a program from a file (not yet
implemented in the program class); and is triggered by passing a -1 for
the line number to the update function (which the edit box instance will
not do)

the operation enumeration definition (with a new value for the append
operation) was moved from the error list header file to the program
model header file (the error list no longer uses the operation once
the no longer present set change index  function was removed)
---
 errorlist.h      | 10 +---------
 programmodel.cpp | 17 +++++++++++++----
 programmodel.h   |  9 +++++++++
 3 files changed, 23 insertions(+), 13 deletions(-)

diff --git a/errorlist.h b/errorlist.h
index ba8190e..5f2d90d 100644
--- a/errorlist.h
+++ b/errorlist.h
@@ -29,13 +29,6 @@
 #include <QString>
 
 
-enum Operation
-{
-	Insert_Operation,
-	Change_Operation,
-	Remove_Operation
-};
-
 // class for holding details for an error of a program line
 class ErrorItem
 {
@@ -118,9 +111,8 @@ class ErrorList : public QList<ErrorItem>
 	}
 
 private:
-	void setChangeIndex(int index, Operation operation);
-
 	bool m_changed;						// error list changed
 };
 
+
 #endif // ERRORLIST_H
diff --git a/programmodel.cpp b/programmodel.cpp
index 261cdbc..b9b06bb 100644
--- a/programmodel.cpp
+++ b/programmodel.cpp
@@ -238,7 +238,7 @@ void ProgramModel::clear(void)
 
 
 // slot function to receive program updates
-
+//   - if lineNumber == 1 then append line to end of program
 void ProgramModel::update(int lineNumber, int linesDeleted, int linesInserted,
 	QStringList lines)
 {
@@ -269,12 +269,21 @@ void ProgramModel::update(int lineNumber, int linesDeleted, int linesInserted,
 	}
 	else if (linesInserted > 0)
 	{
-		// insert new lines into the program
+		Operation operation;
+		if (lineNumber == -1)  // append to end of program?
+		{
+			lineNumber = oldCount;
+			operation = Append_Operation;
+		}
+		else  // insert new lines into the program
+		{
+			operation = Insert_Operation;
+		}
 		int lastLineNumber = lineNumber + linesInserted - 1;
 		beginInsertRows(QModelIndex(), lineNumber, lastLineNumber);
 		while (i < count)
 		{
-			updateLine(Insert_Operation, lineNumber++, lines.at(i++));
+			updateLine(operation, lineNumber++, lines.at(i++));
 		}
 		endInsertRows();
 	}
@@ -341,7 +350,7 @@ bool ProgramModel::updateLine(Operation operation, int lineNumber,
 		delete rpnList;  // no longer needed
 		return changed;
 	}
-	else if (operation == Insert_Operation)
+	else if (operation == Append_Operation || operation == Insert_Operation)
 	{
 		LineInfo lineInfo;
 		lineInfo.errIndex = -1;
diff --git a/programmodel.h b/programmodel.h
index 7a28f51..3201cc7 100644
--- a/programmodel.h
+++ b/programmodel.h
@@ -41,6 +41,15 @@ class Table;
 class Translator;
 
 
+enum Operation
+{
+	Append_Operation,
+	Insert_Operation,
+	Change_Operation,
+	Remove_Operation
+};
+
+
 // class for holding and accessing a program word
 class ProgramWord
 {