7: German Requiem Johannes Brahms 1868
*/
+
+
+class MyMusicModelNode;
+WX_DEFINE_ARRAY_PTR( MyMusicModelNode*, MyMusicModelNodes );
+
+class MyMusicModelNode
+{
+public:
+ MyMusicModelNode( MyMusicModelNode* parent,
+ const wxString &title, const wxString &artist, const wxString &year )
+ {
+ m_parent = parent;
+ m_title = title;
+ m_artist = artist;
+ m_year = year;
+ m_isContainer = false;
+ }
+
+ MyMusicModelNode( MyMusicModelNode* parent,
+ const wxString &branch )
+ {
+ m_parent = parent;
+ m_title = branch;
+ m_isContainer = true;
+ }
+
+ ~MyMusicModelNode()
+ {
+ size_t count = m_children.GetCount();
+ size_t i;
+ for (i = 0; i < count; i++)
+ {
+ MyMusicModelNode *child = m_children[i];
+ delete child;
+ }
+ }
+
+ bool IsContainer() { return m_isContainer; }
+
+ MyMusicModelNode* GetParent() { return m_parent; }
+ MyMusicModelNodes &GetChildren() { return m_children; }
+ MyMusicModelNode* GetNthChild( unsigned int n ) { return m_children.Item( n ); }
+ void Insert( MyMusicModelNode* child, unsigned int n) { m_children.Insert( child, n); }
+ void Append( MyMusicModelNode* child ) { m_children.Add( child ); }
+ unsigned int GetChildCount() { return m_children.GetCount(); }
+
+public:
+ wxString m_title;
+ wxString m_artist;
+ wxString m_year;
+
+private:
+ MyMusicModelNode *m_parent;
+ MyMusicModelNodes m_children;
+ bool m_isContainer;
+};
+
class MyMusicModel: public wxDataViewModel
{
public:
- MyMusicModel() {}
+
+ // constructor
+
+ MyMusicModel()
+ {
+ m_root = new MyMusicModelNode( NULL, "My Music" );
+ m_pop = new MyMusicModelNode( m_root, "Pop music" );
+ m_root->Append( m_pop );
+ m_pop->Append( new MyMusicModelNode( m_pop,
+ "You are not alone", "Michael Jackson", "1995" ) );
+ m_pop->Append( new MyMusicModelNode( m_pop,
+ "Take a bow", "Madonna", "1994" ) );
+ m_classical = new MyMusicModelNode( m_root, "Classical music" );
+ m_root->Append( m_classical );
+ m_classical->Append( new MyMusicModelNode( m_classical,
+ "Ninth symphony", "Ludwig van Beethoven", "1824" ) );
+ m_classical->Append( new MyMusicModelNode( m_classical,
+ "German Requiem", "Johannes Brahms", "1868" ) );
+ m_classicalMusicIsKnownToControl = false;
+ }
+
+ // helper methods to change the model
+
+ void AddToClassical( const wxString &title, const wxString &artist, const wxString &year )
+ {
+ // add to data
+ MyMusicModelNode *child_node =
+ new MyMusicModelNode( m_classical, title, artist, year );
+ m_classical->Append( child_node );
+
+ if (m_classicalMusicIsKnownToControl)
+ {
+ // notify control
+ wxDataViewItem child( (void*) child_node );
+ wxDataViewItem parent( (void*) m_classical );
+ ItemAdded( parent, child );
+ }
+ }
+
+ void Delete( const wxDataViewItem &item )
+ {
+ MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
+ node->GetParent()->GetChildren().Remove( node );
+ delete node;
+
+ // notify control
+ ItemDeleted( item );
+ }
+
+ // implementation of base class virtuals to define model
virtual unsigned int GetColumnCount() const
{
virtual void GetValue( wxVariant &variant,
const wxDataViewItem &item, unsigned int col ) const
{
- variant = wxString("");
- int ID = item.GetID();
- switch (ID)
+ MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
+ switch (col)
{
- case 1: if (col == 0) variant = wxString("My Music"); break;
- case 2: if (col == 0) variant = wxString("Pop music"); break;
- case 5: if (col == 0) variant = wxString("Classical music"); break;
- case 3:
- {
- switch (col)
- {
- case 0: variant = wxString("You are not alone"); break;
- case 1: variant = wxString("Michael Jackson"); break;
- case 2: variant = wxString("1995");
- }
- }
- break;
- case 4:
- {
- switch (col)
- {
- case 0: variant = wxString("Take a bow"); break;
- case 1: variant = wxString("Madonna"); break;
- case 2: variant = wxString("1994");
- }
- }
- break;
- case 6:
- {
- switch (col)
- {
- case 0: variant = wxString("Ninth symphony"); break;
- case 1: variant = wxString("Ludwig v. Beethoven"); break;
- case 2: variant = wxString("1824");
- }
- }
- break;
- case 7:
- {
- switch (col)
- {
- case 0: variant = wxString("German requiem"); break;
- case 1: variant = wxString("Johannes Brahms"); break;
- case 2: variant = wxString("1868");
- }
- }
- break;
+ case 0: variant = node->m_title; break;
+ case 1: variant = node->m_artist; break;
+ case 2: variant = node->m_year; break;
+ default: wxLogError( "MyMusicModel::GetValue: wrong column" );
}
-
}
virtual bool SetValue( const wxVariant &variant,
const wxDataViewItem &item, unsigned int col )
{
- // readonly
- return true;
+ MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
+ switch (col)
+ {
+ case 0: node->m_title = variant.GetString(); break;
+ case 1: node->m_artist = variant.GetString(); break;
+ case 2: node->m_year = variant.GetString(); break;
+ default: wxLogError( "MyMusicModel::SetValue: wrong column" );
+ }
}
- /*****************************************************************
- If wxDataViewItem is not valid in the two methods I quote above
- then it means "return the child item from the invisible root".
- ******************************************************************/
-
virtual bool HasChildren( const wxDataViewItem &item ) const
{
- int ID = item.GetID();
- return ((ID == 1) || (ID == 2) || (ID == 5) || (ID == 0));
- }
+ MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
+ if (!node)
+ return true;
- virtual int GetChildCount( const wxDataViewItem &item ) const
- {
- int ID = item.GetID();
- switch (ID)
- {
- case 0: return 1;
- case 1: return 2;
- case 2: return 2;
- case 5: return 2;
- }
- return 0;
- }
- virtual wxDataViewItem GetParent( const wxDataViewItem &child ) const
- {
- int ID = child.GetID();
- switch (ID)
- {
- case 2:
- case 5: return wxDataViewItem( 1 );
- case 3:
- case 4: return wxDataViewItem( 2 );
- case 6:
- case 7: return wxDataViewItem( 5 );
- }
-
- return wxDataViewItem(0);
+ return node->IsContainer();
}
+
virtual wxDataViewItem GetFirstChild( const wxDataViewItem &parent ) const
{
- int ID = parent.GetID();
- switch (ID)
+ MyMusicModelNode *node = (MyMusicModelNode*) parent.GetID();
+ if (!node)
+ return wxDataViewItem( (void*) m_root );
+
+ if (node->GetChildCount() == 0)
+ return wxDataViewItem( 0 );
+
+ if (node == m_classical)
{
- case 0: return wxDataViewItem( 1 );
- case 1: return wxDataViewItem( 2 );
- case 2: return wxDataViewItem( 3 );
- case 5: return wxDataViewItem( 6 );
+ MyMusicModel *model = (MyMusicModel*)(const MyMusicModel*) this;
+ model->m_classicalMusicIsKnownToControl = true;
}
- return wxDataViewItem(0);
+ MyMusicModelNode *first_child = node->GetChildren().Item( 0 );
+ return wxDataViewItem( (void*) first_child );
}
+
virtual wxDataViewItem GetNextSibling( const wxDataViewItem &item ) const
{
- int ID = item.GetID();
- switch (ID)
- {
- case 2: return wxDataViewItem( 5 );
- case 3: return wxDataViewItem( 4 );
- case 6: return wxDataViewItem( 7 );
- }
-
- return wxDataViewItem(0);
+ MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
+ MyMusicModelNode *parent = node->GetParent();
+ if (!parent)
+ return wxDataViewItem(0);
+
+ int pos = parent->GetChildren().Index( node );
+ if (pos == wxNOT_FOUND)
+ return wxDataViewItem(0);
+
+ if (pos == parent->GetChildCount()-1)
+ return wxDataViewItem(0);
+
+ node = parent->GetChildren().Item( pos+1 );
+ return wxDataViewItem( (void*) node );
}
- virtual wxDataViewItem GetNthChild( const wxDataViewItem &parent, unsigned int n ) const
- {
- if (!parent.IsOk())
- {
- // root node
- if (n == 0)
- return wxDataViewItem( 1 );
-
- return wxDataViewItem( 0 );
- }
- int ID = parent.GetID();
- switch (ID)
- {
- case 1:
- {
- if (n == 0) return wxDataViewItem( 2 );
- else if (n == 1) return wxDataViewItem( 5 );
- }
- break;
- case 2:
- {
- if (n == 0) return wxDataViewItem( 3 );
- else if (n == 1) return wxDataViewItem( 4 );
- }
- break;
- case 5:
- {
- if (n == 0) return wxDataViewItem( 6 );
- else if (n == 1) return wxDataViewItem( 7 );
- }
- break;
- }
-
- return wxDataViewItem(0);
- }
+private:
+ MyMusicModelNode* m_root;
+ MyMusicModelNode* m_pop;
+ MyMusicModelNode* m_classical;
+ bool m_classicalMusicIsKnownToControl;
};
// -------------------------------------
public:
void OnQuit(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event);
+ void OnAdd(wxCommandEvent& event);
+ void OnDelete(wxCommandEvent& event);
private:
wxDataViewCtrl* m_dataview;
+ wxTextCtrl * m_log;
+ wxObjectDataPtr<MyMusicModel> m_model;
private:
DECLARE_EVENT_TABLE()
// build the first frame
MyFrame *frame =
- new MyFrame(NULL, wxT("wxDataViewCtrl feature test"), 10, 10, 800, 340);
+ new MyFrame(NULL, wxT("wxDataViewCtrl feature test"), 10, 10, 700, 440);
frame->Show(true);
SetTopWindow(frame);
// file menu
ID_ABOUT = wxID_ABOUT,
ID_EXIT = wxID_EXIT,
+
+ ID_ADD = 100,
+ ID_DELETE = 101,
};
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU( ID_ABOUT, MyFrame::OnAbout )
EVT_MENU( ID_EXIT, MyFrame::OnQuit )
+ EVT_BUTTON( ID_ADD, MyFrame::OnAdd )
+ EVT_BUTTON( ID_DELETE, MyFrame::OnDelete )
END_EVENT_TABLE()
MyFrame::MyFrame(wxFrame *frame, wxChar *title, int x, int y, int w, int h):
SetMenuBar(menu_bar);
CreateStatusBar();
+ wxBoxSizer *main_sizer = new wxBoxSizer( wxVERTICAL );
+
m_dataview = new wxDataViewCtrl( this, wxID_ANY, wxDefaultPosition,
wxDefaultSize );
- wxObjectDataPtr<MyMusicModel> model(new MyMusicModel);
- m_dataview->AssociateModel( model.get() );
+ m_model = new MyMusicModel;
+ m_dataview->AssociateModel( m_model.get() );
m_dataview->AppendTextColumn( "Title", 0, wxDATAVIEW_CELL_INERT, 200,
DEFAULT_ALIGN, wxDATAVIEW_COL_SORTABLE );
- m_dataview->AppendTextColumn( "Artist", 1, wxDATAVIEW_CELL_INERT, 200,
+ m_dataview->AppendTextColumn( "Artist", 1, wxDATAVIEW_CELL_EDITABLE, 200,
DEFAULT_ALIGN, wxDATAVIEW_COL_SORTABLE );
m_dataview->AppendTextColumn( "Year", 2, wxDATAVIEW_CELL_INERT, 50,
DEFAULT_ALIGN );
+
+ main_sizer->Add( m_dataview, 2, wxGROW );
+
+ wxBoxSizer *button_sizer = new wxBoxSizer( wxHORIZONTAL );
+
+ button_sizer->Add( new wxButton( this, ID_ADD, "Add Mozart"), 0, wxALL, 10 );
+ button_sizer->Add( new wxButton( this, ID_DELETE, "Delete selected"), 0, wxALL, 10 );
+
+ main_sizer->Add( button_sizer, 0, 0, 0 );
+
+ m_log = new wxTextCtrl( this, -1, "", wxDefaultPosition, wxDefaultSize, wxTE_MULTILINE );
+
+ main_sizer->Add( m_log, 1, wxGROW );
+
+ SetSizer( main_sizer );
}
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event) )
Close(true);
}
+void MyFrame::OnDelete(wxCommandEvent& WXUNUSED(event) )
+{
+ wxDataViewItem item = m_dataview->GetSelection();
+ if (item.IsOk())
+ m_model->Delete( item );
+}
+
+void MyFrame::OnAdd(wxCommandEvent& WXUNUSED(event) )
+{
+ m_model->AddToClassical( "Kleine Nachtmusik", "Wolfgang Mozart", "1787" );
+}
+
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
{
wxAboutDialogInfo info;
projects / wxWidgets.git / blobdiff