Moved TextEditDocumentLayout and related classes to their own file

The Parentheses, TextBlockUserData and TextEditDocumentLayout classes
and their member function implementations were spread around the
BaseTextEditor class. Moving them to their own file to make the code a
bit better organized.

Reviewed-by: mae

src/plugins/texteditor/basetextdocument.cpp

@@ -28,6 +28,8 @@
 **************************************************************************/
 
 #include "basetextdocument.h"
+
+#include "basetextdocumentlayout.h"
 #include "basetexteditor.h"
 #include "storagesettings.h"
 
@@ -52,6 +54,75 @@ DocumentMarker::DocumentMarker(QTextDocument *doc)
 {
 }
 
+bool DocumentMarker::addMark(TextEditor::ITextMark *mark, int line)
+{
+    QTC_ASSERT(line >= 1, return false);
+    int blockNumber = line - 1;
+    TextEditDocumentLayout *documentLayout = qobject_cast<TextEditDocumentLayout*>(document->documentLayout());
+    QTC_ASSERT(documentLayout, return false);
+    QTextBlock block = document->findBlockByNumber(blockNumber);
+
+    if (block.isValid()) {
+        TextBlockUserData *userData = TextEditDocumentLayout::userData(block);
+        userData->addMark(mark);
+        mark->updateLineNumber(blockNumber + 1);
+        mark->updateBlock(block);
+        documentLayout->hasMarks = true;
+        documentLayout->requestUpdate();
+        return true;
+    }
+    return false;
+}
+
+TextEditor::TextMarks DocumentMarker::marksAt(int line) const
+{
+    QTC_ASSERT(line >= 1, return TextMarks());
+    int blockNumber = line - 1;
+    QTextBlock block = document->findBlockByNumber(blockNumber);
+
+    if (block.isValid()) {
+        if (TextBlockUserData *userData = TextEditDocumentLayout::testUserData(block))
+            return userData->marks();
+    }
+    return TextMarks();
+}
+
+void DocumentMarker::removeMark(TextEditor::ITextMark *mark)
+{
+    bool needUpdate = false;
+    QTextBlock block = document->begin();
+    while (block.isValid()) {
+        if (TextBlockUserData *data = static_cast<TextBlockUserData *>(block.userData())) {
+            needUpdate |= data->removeMark(mark);
+        }
+        block = block.next();
+    }
+    if (needUpdate)
+        updateMark(0);
+}
+
+bool DocumentMarker::hasMark(TextEditor::ITextMark *mark) const
+{
+    QTextBlock block = document->begin();
+    while (block.isValid()) {
+        if (TextBlockUserData *data = static_cast<TextBlockUserData *>(block.userData())) {
+            if (data->hasMark(mark))
+                return true;
+        }
+        block = block.next();
+    }
+    return false;
+}
+
+void DocumentMarker::updateMark(ITextMark *mark)
+{
+    Q_UNUSED(mark)
+    TextEditDocumentLayout *documentLayout = qobject_cast<TextEditDocumentLayout*>(document->documentLayout());
+    QTC_ASSERT(documentLayout, return);
+    documentLayout->requestUpdate();
+}
+
+
 BaseTextDocument::BaseTextDocument()
   : m_document(new QTextDocument(this)),
     m_highlighter(0)