Added wxDataViewListIndexModel::RowsDeleted() and various related corrections

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50764 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/dataviewindexlistmodel.tex

@@ -91,6 +91,14 @@ Call this after a row has been changed.
 
 Call this after a row has been deleted.
 
+\membersection{wxDataViewIndexListModel::RowsDeleted}\label{wxdataviewindexlistmodelrowdeleted}
+
+\func{void}{RowsDeleted}{\param{const wxArrayInt &}{rows}}
+
+Call this after rows have been deleted. The array will internally
+get copied and sorted in descending order so that the rows with
+the highest position will be deleted first.
+
 \membersection{wxDataViewIndexListModel::RowInserted}\label{wxdataviewindexlistmodelrowinserted}
 
 \func{void}{RowInserted}{\param{unsigned int }{before}}

include/wx/dataview.h

@@ -245,6 +245,7 @@ public:
     void RowInserted( unsigned int before );
     void RowAppended();
     void RowDeleted( unsigned int row );
+    void RowsDeleted( const wxArrayInt &rows );
     void RowChanged( unsigned int row );
     void RowValueChanged( unsigned int row, unsigned int col );
 

samples/dataview/dataview.cpp

@@ -353,6 +353,17 @@ private:
     bool                m_classicalMusicIsKnownToControl;
 };
 
+
+static int my_sort_reverse( int *v1, int *v2 )
+{
+   return *v2-*v1;
+}
+
+static int my_sort( int *v1, int *v2 )
+{
+   return *v1-*v2;
+}
+
 class MyListModel: public wxDataViewIndexListModel
 {
 public:
@@ -389,6 +400,34 @@ public:
         RowDeleted( row );
     }
     
+    void DeleteItems( const wxDataViewItemArray &items )
+    {
+        wxArrayInt rows;
+        unsigned int i;
+        for (i = 0; i < items.GetCount(); i++)
+        {
+            unsigned int row = GetRow( items[i] );
+            rows.Add( row );
+        }
+
+        // Sort in descending order so that the last
+        // row will be deleted first. Otherwise the
+        // remaining indeces would all be wrong.
+        rows.Sort( my_sort_reverse );
+        for (i = 0; i < rows.GetCount(); i++)
+            m_array.RemoveAt( rows[i] );
+
+        // This is just to test if wxDataViewCtrl can
+        // cope with removing rows not sorted in 
+        // descending order
+        rows.Sort( my_sort );
+        RowsDeleted( rows );
+    }
+    
+    void AddMany()
+    {
+    }
+
     // implementation of base class virtuals to define model
     
     virtual unsigned int GetColumnCount() const
@@ -522,6 +561,7 @@ public:
 
     void OnRightClick( wxMouseEvent &event );
     void OnGoto( wxCommandEvent &event);
+    void OnAddMany( wxCommandEvent &event);
 
 private:
     wxDataViewCtrl* m_musicCtrl;
@@ -552,7 +592,7 @@ bool MyApp::OnInit(void)
 
     // build the first frame
     MyFrame *frame = 
-        new MyFrame(NULL, wxT("wxDataViewCtrl feature test"), 40, 40, 800, 440);
+        new MyFrame(NULL, wxT("wxDataViewCtrl feature test"), 40, 40, 800, 540);
     frame->Show(true);
 
     SetTopWindow(frame);
@@ -583,7 +623,8 @@ enum
      
     ID_PREPEND_LIST     = 200,
     ID_DELETE_LIST      = 201,
-    ID_GOTO             = 202
+    ID_GOTO             = 202,
+    ID_ADD_MANY         = 203
 };
 
 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
@@ -595,6 +636,7 @@ BEGIN_EVENT_TABLE(MyFrame, wxFrame)
     EVT_BUTTON( ID_PREPEND_LIST, MyFrame::OnPrependList )
     EVT_BUTTON( ID_DELETE_LIST, MyFrame::OnDeleteList )
     EVT_BUTTON( ID_GOTO, MyFrame::OnGoto)
+    EVT_BUTTON( ID_ADD_MANY, MyFrame::OnAddMany)
     
     EVT_DATAVIEW_ITEM_VALUE_CHANGED( ID_MUSIC_CTRL, MyFrame::OnValueChanged )
     
@@ -696,9 +738,12 @@ MyFrame::MyFrame(wxFrame *frame, const wxString &title, int x, int y, int w, int
     button_sizer->Add( new wxButton( this, ID_DELETE_MUSIC, "Delete selected"), 0, wxALL, 10 );
     button_sizer->Add( new wxButton( this, ID_DELETE_YEAR, "Delete \"Year\" column"), 0, wxALL, 10 );
     button_sizer->Add( 10, 10, 1 );
-    button_sizer->Add( new wxButton( this, ID_PREPEND_LIST, "Prepend"), 0, wxALL, 10 );
-    button_sizer->Add( new wxButton( this, ID_DELETE_LIST, "Delete selected"), 0, wxALL, 10 );
-    button_sizer->Add( new wxButton( this, ID_GOTO, "Goto 50"), 0, wxALL, 10 );
+    wxFlexGridSizer *grid_sizer = new wxFlexGridSizer( 2, 2 );
+    grid_sizer->Add( new wxButton( this, ID_PREPEND_LIST, "Prepend"), 0, wxALL, 2 );
+    grid_sizer->Add( new wxButton( this, ID_DELETE_LIST, "Delete selected"), 0, wxALL, 2 );
+    grid_sizer->Add( new wxButton( this, ID_GOTO, "Goto 50"), 0, wxALL, 2 );
+    grid_sizer->Add( new wxButton( this, ID_ADD_MANY, "Add 1000"), 0, wxALL, 2 );
+    button_sizer->Add( grid_sizer, 0, wxALL, 10 );
     
     main_sizer->Add( button_sizer, 0, wxGROW, 0 );
 
@@ -783,9 +828,8 @@ void MyFrame::OnDeleteList( wxCommandEvent& WXUNUSED(event) )
 {
     wxDataViewItemArray items;
     int len = m_listCtrl->GetSelections( items );
-    for( int i = 0; i < len; i ++ )
-        if (items[i].IsOk())
-            m_list_model->DeleteItem( items[i] );
+    if (len > 0)
+        m_list_model->DeleteItems( items );
 }
 
 void MyFrame::OnValueChanged( wxDataViewEvent &event )
@@ -925,6 +969,12 @@ void MyFrame::OnGoto(wxCommandEvent& WXUNUSED(event))
     m_listCtrl->EnsureVisible(item,m_col);
 }
 
+void MyFrame::OnAddMany(wxCommandEvent& WXUNUSED(event))
+{
+    m_list_model->AddMany();
+}
+
+
 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
 {
     wxAboutDialogInfo info;

src/common/datavcmn.cpp

@@ -385,6 +385,8 @@ void wxDataViewIndexListModel::RowDeleted( unsigned int row )
 {
     if (m_useHash)
     {
+        m_ordered = false;
+        
         wxDataViewItem item( m_hash[row] );
         wxDataViewModel::ItemDeleted( wxDataViewItem(0), item );
         m_hash.RemoveAt( row );
@@ -397,6 +399,47 @@ void wxDataViewIndexListModel::RowDeleted( unsigned int row )
     }
 }
 
+static int my_sort( int *v1, int *v2 )
+{
+   return *v2-*v1;
+}
+
+void wxDataViewIndexListModel::RowsDeleted( const wxArrayInt &rows )
+{
+    wxArrayInt sorted = rows;
+    sorted.Sort( my_sort );
+    
+    if (m_useHash)
+    {
+        m_ordered = false;
+        
+        wxDataViewItemArray array;
+        unsigned int i;
+        for (i = 0; i < rows.GetCount(); i++)
+        {
+            wxDataViewItem item( m_hash[rows[i]] );
+            array.Add( item );
+        }
+        wxDataViewModel::ItemsDeleted( wxDataViewItem(0), array );
+        
+        for (i = 0; i < sorted.GetCount(); i++)
+           m_hash.RemoveAt( sorted[i] );
+    }
+    else
+    {
+        wxDataViewItemArray array;
+        unsigned int i;
+        for (i = 0; i < sorted.GetCount(); i++)
+        {
+            wxDataViewItem item( (void*) sorted[i] );
+            array.Add( item );
+        }
+        wxDataViewModel::ItemsDeleted( wxDataViewItem(0), array );
+    
+        m_lastIndex -= rows.GetCount();
+    }
+}
+
 void wxDataViewIndexListModel::RowChanged( unsigned int row )
 {
     wxDataViewModel::ItemChanged( GetItem(row) );

src/generic/datavgen.cpp

@@ -2048,6 +2048,13 @@ bool Walker( wxDataViewTreeNode * node, DoJob & func )
 
 bool wxDataViewMainWindow::ItemAdded(const wxDataViewItem & parent, const wxDataViewItem & item)
 {
+    if (!m_root)
+    {
+        m_count++;
+        UpdateDisplay();
+        return true;
+    }
+    
     SortPrepare();
 
     wxDataViewTreeNode * node;
@@ -2081,6 +2088,19 @@ void DestroyTreeHelper( wxDataViewTreeNode * node);
 bool wxDataViewMainWindow::ItemDeleted(const wxDataViewItem& parent,
                                        const wxDataViewItem& item)
 {
+    if (!m_root)
+    {
+        m_count--;
+        if( m_currentRow > GetRowCount() )
+            m_currentRow = m_count - 1;
+
+        m_selection.Empty();
+        
+        UpdateDisplay();
+
+        return true;
+    }
+
     wxDataViewTreeNode * node = FindNode(parent);
 
     wxCHECK_MSG( node != NULL, false, "item not found" );