CppEditor: Reuse OverviewModel from text editor also in the outline pane

There's no use synchronizing the same model twice.

src/plugins/cppeditor/cppeditor.cpp

@@ -1417,6 +1417,11 @@ SemanticInfo CPPEditor::semanticInfo() const
     return m_lastSemanticInfo;
 }
 
+CPlusPlus::OverviewModel *CPPEditor::overviewModel() const
+{
+    return m_overviewModel;
+}
+
 bool CPPEditor::isElectricCharacter(QChar ch) const
 {
     if (ch == QLatin1Char('{') ||

src/plugins/cppeditor/cppeditor.h

@@ -165,6 +165,7 @@ public:
     unsigned editorRevision() const;
     bool isOutdated() const;
     SemanticInfo semanticInfo() const;
+    CPlusPlus::OverviewModel *overviewModel() const;
 
     virtual void paste(); // reimplemented from BaseTextEditor
     virtual void cut(); // reimplemented from BaseTextEditor

src/plugins/cppeditor/cppoutline.cpp

@@ -6,8 +6,9 @@
 #include <coreplugin/ifile.h>
 #include <cplusplus/OverviewModel.h>
 
-#include <QtGui/QVBoxLayout>
 #include <QtCore/QDebug>
+#include <QtGui/QVBoxLayout>
+#include <QtCore/QTimer>
 
 using namespace CppEditor::Internal;
 
@@ -49,7 +50,7 @@ CppOutlineWidget::CppOutlineWidget(CPPEditor *editor) :
     TextEditor::IOutlineWidget(),
     m_editor(editor),
     m_treeView(new CppOutlineTreeView(this)),
-    m_model(new CPlusPlus::OverviewModel(this)),
+    m_model(m_editor->overviewModel()),
     m_proxyModel(new CppOutlineFilterModel(this)),
     m_enableCursorSync(true),
     m_blockCursorSync(false)
@@ -63,14 +64,8 @@ CppOutlineWidget::CppOutlineWidget(CPPEditor *editor) :
     m_proxyModel->setSourceModel(m_model);
     m_treeView->setModel(m_proxyModel);
 
-    CppTools::CppModelManagerInterface *modelManager = CppTools::CppModelManagerInterface::instance();
-
-    connect(modelManager, SIGNAL(documentUpdated(CPlusPlus::Document::Ptr)),
-            this, SLOT(updateOutline(CPlusPlus::Document::Ptr)));
-
-    if (modelManager->snapshot().contains(editor->file()->fileName())) {
-        updateOutline(modelManager->snapshot().document(editor->file()->fileName()));
-    }
+    connect(m_model, SIGNAL(modelReset()), this, SLOT(modelUpdated()));
+    modelUpdated();
 
     connect(m_editor, SIGNAL(cursorPositionChanged()),
             this, SLOT(updateSelectionInTree()));
@@ -85,18 +80,10 @@ void CppOutlineWidget::setCursorSynchronization(bool syncWithCursor)
         updateSelectionInTree();
 }
 
-void CppOutlineWidget::updateOutline(CPlusPlus::Document::Ptr document)
+void CppOutlineWidget::modelUpdated()
 {
-    m_document = document;
-    if (document && m_editor
-            && (document->fileName() == m_editor->file()->fileName())
-            && (document->editorRevision() == m_editor->editorRevision())) {
-        if (debug)
-            qDebug() << "CppOutline - rebuilding model";
-        m_model->rebuild(document);
-        m_treeView->expandAll();
-        updateSelectionInTree();
-    }
+    m_treeView->expandAll();
+    updateSelectionInTree();
 }
 
 void CppOutlineWidget::updateSelectionInTree()
@@ -130,7 +117,8 @@ void CppOutlineWidget::updateSelectionInText(const QItemSelection &selection)
         if (symbol) {
             m_blockCursorSync = true;
             unsigned line, column;
-            m_document->translationUnit()->getPosition(symbol->startOffset(), &line, &column);
+
+            m_model->document()->translationUnit()->getPosition(symbol->startOffset(), &line, &column);
 
             if (debug)
                 qDebug() << "CppOutline - moving cursor to" << line << column - 1;
@@ -161,9 +149,9 @@ QModelIndex CppOutlineWidget::indexForPosition(const QModelIndex &rootIndex, int
 
 bool CppOutlineWidget::positionInsideSymbol(unsigned cursorLine, unsigned cursorColumn, CPlusPlus::Symbol *symbol) const
 {
-    if (!m_document)
+    if (!m_model->document())
         return false;
-    CPlusPlus::TranslationUnit *translationUnit = m_document->translationUnit();
+    CPlusPlus::TranslationUnit *translationUnit = m_model->document()->translationUnit();
 
     unsigned symbolStartLine = -1;
     unsigned symbolStartColumn = -1;

src/plugins/cppeditor/cppoutline.h

@@ -38,7 +38,7 @@ public:
     virtual void setCursorSynchronization(bool syncWithCursor);
 
 private slots:
-    void updateOutline(CPlusPlus::Document::Ptr document);
+    void modelUpdated();
     void updateSelectionInTree();
     void updateSelectionInText(const QItemSelection &selection);
 
@@ -52,7 +52,6 @@ private:
     CppOutlineTreeView *m_treeView;
     CPlusPlus::OverviewModel *m_model;
     CppOutlineFilterModel *m_proxyModel;
-    CPlusPlus::Document::Ptr m_document;
 
     bool m_enableCursorSync;
     bool m_blockCursorSync;