Further work on wxDataViewListModel::Reset()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65538 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/dataview.h

@@ -126,8 +126,8 @@ public:
     virtual bool ValueChanged( const wxDataViewItem &item, unsigned int col ) = 0;
     virtual bool Cleared() = 0;
     
-    // this is needed for the virtual list model under GTK+
+    // some platforms, such as GTK+, may need a two step procedure for ::Reset()
-    virtual bool BeforeReset( size_t WXUNUSED(old_size), size_t WXUNUSED(new_size) ) { return true; }
+    virtual bool BeforeReset() { return true; }
     virtual bool AfterReset() { return Cleared(); }
 
     virtual void Resort() = 0;
@@ -249,8 +249,8 @@ public:
     bool ValueChanged( const wxDataViewItem &item, unsigned int col );
     bool Cleared();
 
-    // this is needed for the virtual list model under GTK+
+    // some platforms, such as GTK+, may need a two step procedure for ::Reset()
-    bool BeforeReset( size_t old_size, size_t new_size );
+    bool BeforeReset();
     bool AfterReset();
 
 

samples/dataview/mymodels.cpp

@@ -317,13 +317,11 @@ static int my_sort( int *v1, int *v2 )
    return *v1-*v2;
 }
 
-#define INITIAL_NUMBER_OF_ITEMS 100000
+#define INITIAL_NUMBER_OF_ITEMS 10000
 
 MyListModel::MyListModel() :
         wxDataViewVirtualListModel( INITIAL_NUMBER_OF_ITEMS )
 {
-    m_virtualItems = INITIAL_NUMBER_OF_ITEMS;
-
     // the first 100 items are really stored in this model;
     // all the others are synthesized on request
     static const unsigned NUMBER_REAL_ITEMS = 100;
@@ -350,6 +348,7 @@ void MyListModel::Prepend( const wxString &text )
 void MyListModel::DeleteItem( const wxDataViewItem &item )
 {
     unsigned int row = GetRow( item );
+    
     if (row >= m_textColValues.GetCount())
         return;
 
@@ -392,8 +391,7 @@ void MyListModel::DeleteItems( const wxDataViewItemArray &items )
 
 void MyListModel::AddMany()
 {
-    m_virtualItems += 1000;
+    Reset( GetCount()+1000 );
-    Reset( m_textColValues.GetCount() + m_virtualItems );
 }
 
 void MyListModel::GetValueByRow( wxVariant &variant,

samples/dataview/mymodels.h

@@ -222,11 +222,6 @@ public:
         return wxT("string");
     }
 
-    virtual unsigned int GetRowCount()
-    {
-        return m_textColValues.GetCount();
-    }
-
     virtual void GetValueByRow( wxVariant &variant,
                                 unsigned int row, unsigned int col ) const;
     virtual bool GetAttrByRow( unsigned int row, unsigned int col,
@@ -238,6 +233,5 @@ private:
     wxArrayString    m_textColValues;
     wxArrayString    m_iconColValues;
     wxIcon           m_icon[2];
-    int              m_virtualItems;
 };
 

src/common/datavcmn.cpp

@@ -235,7 +235,7 @@ bool wxDataViewModel::Cleared()
     return ret;
 }
 
-bool wxDataViewModel::BeforeReset( size_t old_size, size_t new_size )
+bool wxDataViewModel::BeforeReset()
 {
     bool ret = true;
 
@@ -243,7 +243,7 @@ bool wxDataViewModel::BeforeReset( size_t old_size, size_t new_size )
     for (iter = m_notifiers.begin(); iter != m_notifiers.end(); ++iter)
     {
         wxDataViewModelNotifier* notifier = *iter;
-        if (!notifier->BeforeReset(old_size,new_size))
+        if (!notifier->BeforeReset())
             ret = false;
     }
 
@@ -375,6 +375,8 @@ wxDataViewIndexListModel::wxDataViewIndexListModel( unsigned int initial_size )
 
 void wxDataViewIndexListModel::Reset( unsigned int new_size )
 {
+    /* wxDataViewModel:: */ BeforeReset();
+    
     m_hash.Clear();
 
     // IDs are ordered until an item gets deleted or inserted
@@ -387,7 +389,7 @@ void wxDataViewIndexListModel::Reset( unsigned int new_size )
 
     m_nextFreeID = new_size + 1;
 
-    /* wxDataViewModel:: */ Cleared();
+    /* wxDataViewModel:: */ AfterReset();
 }
 
 void wxDataViewIndexListModel::RowPrepended()
@@ -529,7 +531,7 @@ wxDataViewVirtualListModel::wxDataViewVirtualListModel( unsigned int initial_siz
 
 void wxDataViewVirtualListModel::Reset( unsigned int new_size )
 {
-    /* wxDataViewModel:: */ BeforeReset( m_size, new_size );
+    /* wxDataViewModel:: */ BeforeReset();
 
     m_size = new_size;
     

src/gtk/dataview.cpp

@@ -233,7 +233,7 @@ public:
     bool ItemChanged( const wxDataViewItem &item );
     bool ValueChanged( const wxDataViewItem &item, unsigned int col );
     bool Cleared();
-    bool BeforeReset(size_t old_Size,size_t new_size);
+    bool BeforeReset();
     bool AfterReset();
     void Resort();
 
@@ -258,8 +258,12 @@ public:
     // item can be deleted already in the model
     int GetIndexOf( const wxDataViewItem &parent, const wxDataViewItem &item );
 
+    virtual void OnInternalIdle();
+    
 protected:
     void InitTree();
+    void ScheduleRefresh();
+    
     wxGtkTreeModelNode *FindNode( const wxDataViewItem &item );
     wxGtkTreeModelNode *FindNode( GtkTreeIter *iter );
     wxGtkTreeModelNode *FindParentNode( const wxDataViewItem &item );
@@ -284,6 +288,8 @@ private:
     wxDataObject         *m_dropDataObject;
     
     wxGtkDataViewModelNotifier *m_notifier;
+    
+    bool                  m_dirty;
 };
 
 
@@ -1487,7 +1493,7 @@ public:
     virtual bool ValueChanged( const wxDataViewItem &item, unsigned int col );
     virtual bool Cleared();
     virtual void Resort();
-    virtual bool BeforeReset(size_t old_size,size_t new_size);
+    virtual bool BeforeReset();
     virtual bool AfterReset();
     
     void UpdateLastCount();
@@ -1627,22 +1633,22 @@ bool wxGtkDataViewModelNotifier::ValueChanged( const wxDataViewItem &item, unsig
     return false;
 }
 
-bool wxGtkDataViewModelNotifier::BeforeReset(size_t WXUNUSED(old_size), size_t WXUNUSED(new_size))
+bool wxGtkDataViewModelNotifier::BeforeReset()
 {
     GtkWidget *treeview = m_internal->GetOwner()->GtkGetTreeView();
     gtk_tree_view_set_model( GTK_TREE_VIEW(treeview), NULL );
-    
+
     return true;
 }
 
 bool wxGtkDataViewModelNotifier::AfterReset()
 {
-    GtkWxTreeModel *wxgtk_model = m_internal->GetGtkModel();
     GtkWidget *treeview = m_internal->GetOwner()->GtkGetTreeView();
+    GtkWxTreeModel *wxgtk_model = m_internal->GetGtkModel();
+    
+    m_internal->Cleared(); 
     
     gtk_tree_view_set_model( GTK_TREE_VIEW(treeview), GTK_TREE_MODEL(wxgtk_model) );
-
-    m_internal->Cleared(); 
     
     return true;
 }
@@ -3390,6 +3396,8 @@ wxDataViewCtrlInternal::wxDataViewCtrlInternal( wxDataViewCtrl *owner, wxDataVie
     m_dragDataObject = NULL;
     m_dropDataObject = NULL;
 
+    m_dirty = false;
+    
     m_gtk_model = wxgtk_tree_model_new();
     m_gtk_model->internal = this;
 
@@ -3418,6 +3426,21 @@ wxDataViewCtrlInternal::~wxDataViewCtrlInternal()
     delete m_dropDataObject;
 }
 
+void wxDataViewCtrlInternal::ScheduleRefresh()
+{
+    m_dirty = true;
+}
+
+void wxDataViewCtrlInternal::OnInternalIdle()
+{
+    if (m_dirty)
+    {
+        GtkWidget *widget = m_owner->GtkGetTreeView();
+        gtk_widget_queue_draw( widget );
+        m_dirty = false;
+    }
+}
+
 void wxDataViewCtrlInternal::InitTree()
 {
     wxDataViewItem item;
@@ -3605,6 +3628,8 @@ bool wxDataViewCtrlInternal::Cleared()
         
     InitTree();
     
+    ScheduleRefresh();
+    
     return true;
 }
 
@@ -3612,6 +3637,8 @@ void wxDataViewCtrlInternal::Resort()
 {
     if (!m_wx_model->IsVirtualListModel())
         m_root->Resort();
+        
+    ScheduleRefresh();
 }
 
 bool wxDataViewCtrlInternal::ItemAdded( const wxDataViewItem &parent, const wxDataViewItem &item )
@@ -3628,6 +3655,8 @@ bool wxDataViewCtrlInternal::ItemAdded( const wxDataViewItem &parent, const wxDa
             parent_node->AddLeave( item.GetID() );
     }
 
+    ScheduleRefresh();
+    
     return true;
 }
 
@@ -3642,6 +3671,8 @@ bool wxDataViewCtrlInternal::ItemDeleted( const wxDataViewItem &parent, const wx
         parent_node->DeleteChild( item.GetID() );
     }
 
+    ScheduleRefresh();
+    
     return true;
 }
 
@@ -4507,6 +4538,8 @@ wxDataViewItem wxDataViewCtrl::GTKPathToItem(GtkTreePath *path) const
 void wxDataViewCtrl::OnInternalIdle()
 {
     wxWindow::OnInternalIdle();
+    
+    m_internal->OnInternalIdle();
 
     unsigned int cols = GetColumnCount();
     unsigned int i;