editbox: removed lines changed signal to program model update slot

With the edit box having direct access to the program model, the lines
changed signal to update slot is not necessary and was changed to a
normal function call (which is how the tester class accesses the program
model already)

also added a few comments and identified slot functions in the comments

editbox.cpp

@@ -50,16 +50,20 @@ EditBox::EditBox(ProgramModel *programUnit, QWidget *parent) :
 	font.setStyleHint(QFont::Monospace);
 	setFont(font);
 
+	//========================
+	//  INTERNAL CONNECTIONS
+	//========================
+
 	// connect to catch specific document changes
 	connect(document(), SIGNAL(contentsChange(int, int, int)),
 		this, SLOT(documentChanged(int, int, int)));
 
 	// connect to catch cursor position changes
 	connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(cursorMoved()));
 
-	// connect to catch line changes
-	connect(this, SIGNAL(linesChanged(int, int, int, QStringList)),
-		m_programUnit, SLOT(update(int, int, int, QStringList)));
+	//============================
+	//  FROM PROGRAM CONNECTIONS
+	//============================
 
 	// connect to catch when an error has been inserted
 	connect(m_programUnit, SIGNAL(errorInserted(int, ErrorItem)),
@@ -77,9 +81,14 @@ EditBox::EditBox(ProgramModel *programUnit, QWidget *parent) :
 	connect(m_programUnit, SIGNAL(errorListChanged()),
 		this, SLOT(errorListChanged()));
 
+	//======================
+	//  LINE NUMBER WIDGET
+	//======================
+
 	// create line number area width and connect signal to update it
 	m_lineNumberWidget = new LineNumberWidget(this);
 
+	// connect signals to line number widget functions
 	connect(this, SIGNAL(blockCountChanged(int)),
 		this, SLOT(lineNumberWidgetUpdateWidth()));
 	connect(this, SIGNAL(updateRequest(QRect, int)),
@@ -291,7 +300,7 @@ void EditBox::resetModified(void)
 }
 
 
-// function to detect lines changed when the document was changed
+// slot function to detect lines changed when the document was changed
 //
 //   - determines the number of lines that were modified
 //   - determines the net line count changed of the document
@@ -429,7 +438,8 @@ void EditBox::documentChanged(int position, int charsRemoved, int charsAdded)
 						+ i).text();
 				}
 			}
-			emit linesChanged(changeLine, linesDeleted, linesInserted, lines);
+			m_programUnit->update(changeLine, linesDeleted, linesInserted,
+				lines);
 		}
 		m_lineCount = newLineCount;
 	}
@@ -442,7 +452,7 @@ void EditBox::documentChanged(int position, int charsRemoved, int charsAdded)
 }
 
 
-// function to check if cursor was moved from the modified line
+// slot function to check if cursor was moved from the modified line
 
 void EditBox::cursorMoved(void)
 {
@@ -460,7 +470,7 @@ void EditBox::cursorMoved(void)
 }
 
 
-// overloaded function to set plain text of the document
+// overloaded slot function to set plain text of the document
 
 void EditBox::setPlainText(const QString &text)
 {
@@ -476,7 +486,7 @@ void EditBox::captureModifiedLine(int offset)
 {
 	if (m_modifiedLine >= 0)
 	{
-		emit linesChanged(m_modifiedLine, 0, m_modifiedLineIsNew ? 1 : 0,
+		m_programUnit->update(m_modifiedLine, 0, m_modifiedLineIsNew ? 1 : 0,
 			QStringList() << document()->findBlockByNumber(m_modifiedLine
 			+ offset).text());
 
@@ -579,15 +589,15 @@ int EditBox::lineNumberWidgetWidth(void)
 }
 
 
-// function to update the line number area width based on the maximum line
+// slot function to update the line number area width based on the maximum line
 
 void EditBox::lineNumberWidgetUpdateWidth(void)
 {
 	setViewportMargins(lineNumberWidgetWidth(), 0, 0, 0);
 }
 
 
-// function to update the line number area when display update requested
+// slot function to update the line number area when display update requested
 
 void EditBox::lineNumberWidgetUpdate(const QRect &rect, int dy)
 {

editbox.h

@@ -70,8 +70,6 @@ class EditBox : public QPlainTextEdit
 	void resizeEvent(QResizeEvent *event);
 
 signals:
-	void linesChanged(int lineNumber, int linesDeleted, int linesInserted,
-		QStringList lines);
 	void cursorChanged(const QString &message);
 	void errorsAvailable(bool available);