Added Insert Line Above/Below actions to BaseTextEditor

The actions perform exactly like their counterparts in Eclipse: a new,
indented line is inserted above or below the current line and the text
cursor is moved to the start of the new line. The line where the cursor
was before the action was triggered remains unchanged.

The shortcuts are also like in Eclipse: "Ctrl+Shift+Return" inserts a
line above the current, "Shift+Return" inserts a line below the current.

Merge-request: 140
Reviewed-by: Thorbjørn Lindeijer <thorbjorn.lindeijer@nokia.com>

src/plugins/texteditor/basetexteditor.cpp

@@ -882,6 +882,29 @@ void BaseTextEditor::joinLines()
     setTextCursor(cursor);
 }
 
+void BaseTextEditor::insertLineAbove()
+{
+    QTextCursor cursor = textCursor();
+    cursor.beginEditBlock();
+    cursor.movePosition(QTextCursor::PreviousBlock, QTextCursor::MoveAnchor);
+    cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::MoveAnchor);
+    cursor.insertBlock();
+    indent(document(), cursor, QChar::Null);
+    cursor.endEditBlock();
+    setTextCursor(cursor);
+}
+
+void BaseTextEditor::insertLineBelow()
+{
+    QTextCursor cursor = textCursor();
+    cursor.beginEditBlock();
+    cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::MoveAnchor);
+    cursor.insertBlock();
+    indent(document(), cursor, QChar::Null);
+    cursor.endEditBlock();
+    setTextCursor(cursor);
+}
+
 void BaseTextEditor::moveLineUp()
 {
     moveLineUpDown(true);

src/plugins/texteditor/basetexteditor.h

@@ -242,6 +242,9 @@ public slots:
 
     void joinLines();
 
+    void insertLineAbove();
+    void insertLineBelow();
+
     void cleanWhitespace();
 
 signals:

src/plugins/texteditor/texteditoractionhandler.cpp

@@ -292,6 +292,16 @@ void TextEditorActionHandler::createActions()
     command = am->registerAction(m_joinLinesAction, Constants::JOIN_LINES, m_contextId);
     command->setDefaultKeySequence(QKeySequence(tr("Ctrl+J")));
     connect(m_joinLinesAction, SIGNAL(triggered()), this, SLOT(joinLines()));
+
+    m_insertLineAboveAction = new QAction(tr("Insert Line Above Current Line"), this);
+    command = am->registerAction(m_insertLineAboveAction, Constants::INSERT_LINE_ABOVE, m_contextId);
+    command->setDefaultKeySequence(QKeySequence(tr("Ctrl+Shift+Return")));
+    connect(m_insertLineAboveAction, SIGNAL(triggered()), this, SLOT(insertLineAbove()));
+
+    m_insertLineBelowAction = new QAction(tr("Insert Line Below Current Line"), this);
+    command = am->registerAction(m_insertLineBelowAction, Constants::INSERT_LINE_BELOW, m_contextId);
+    command->setDefaultKeySequence(QKeySequence(tr("Shift+Return")));
+    connect(m_insertLineBelowAction, SIGNAL(triggered()), this, SLOT(insertLineBelow()));
 }
 
 bool TextEditorActionHandler::supportsAction(const QString & /*id */) const
@@ -454,6 +464,8 @@ FUNCTION(moveLineDown)
 FUNCTION(copyLineUp)
 FUNCTION(copyLineDown)
 FUNCTION(joinLines)
+FUNCTION(insertLineAbove)
+FUNCTION(insertLineBelow)
 
 void TextEditorActionHandler::updateCurrentEditor(Core::IEditor *editor)
 {

src/plugins/texteditor/texteditoractionhandler.h

@@ -116,6 +116,8 @@ private slots:
     void copyLineUp();
     void copyLineDown();
     void joinLines();
+    void insertLineAbove();
+    void insertLineBelow();
     void updateCurrentEditor(Core::IEditor *editor);
 
 private:
@@ -153,6 +155,8 @@ private:
     QAction *m_copyLineUpAction;
     QAction *m_copyLineDownAction;
     QAction *m_joinLinesAction;
+    QAction *m_insertLineAboveAction;
+    QAction *m_insertLineBelowAction;
 
     uint m_optionalActions;
     QPointer<BaseTextEditor> m_currentEditor;

src/plugins/texteditor/texteditorconstants.h

@@ -61,6 +61,8 @@ const char * const MOVE_LINE_DOWN        = "TextEditor.MoveLineDown";
 const char * const COPY_LINE_UP          = "TextEditor.CopyLineUp";
 const char * const COPY_LINE_DOWN        = "TextEditor.CopyLineDown";
 const char * const JOIN_LINES            = "TextEditor.JoinLines";
+const char * const INSERT_LINE_ABOVE     = "TextEditor.InsertLineAboveCurrentLine";
+const char * const INSERT_LINE_BELOW     = "TextEditor.InsertLineBelowCurrentLine";
 const char * const CUT_LINE              = "TextEditor.CutLine";
 const char * const DELETE_LINE           = "TextEditor.DeleteLine";
 const char * const DELETE_WORD           = "TextEditor.DeleteWord";