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Store pointers in wxDataViewItem in the sample, no any artifical int ID

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@47494 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling 2007-07-16 11:15:10 +00:00
parent 9d52aad39a
commit b5fce9e2df
1 changed files with 23 additions and 60 deletions
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83
samples/dataview/dataview.cpp
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@ -65,22 +65,20 @@ WX_DEFINE_ARRAY_PTR( MyMusicModelNode*, MyMusicModelNodes );
class MyMusicModelNode
{
public:
MyMusicModelNode( MyMusicModelNode* parent, const wxUint32 id,
MyMusicModelNode( MyMusicModelNode* parent,
const wxString &title, const wxString &artist, const wxString &year )
{
m_parent = parent;
m_id = id;
m_title = title;
m_artist = artist;
m_year = year;
m_isContainer = false;
}
MyMusicModelNode( MyMusicModelNode* parent, const wxUint32 id,
MyMusicModelNode( MyMusicModelNode* parent,
const wxString &branch )
{
m_parent = parent;
m_id = id;
m_title = branch;
m_isContainer = true;
}
@ -96,7 +94,6 @@ public:
}
}
wxUint32 GetID() { return m_id; }
bool IsContainer() { return m_isContainer; }
MyMusicModelNode* GetParent() { return m_parent; }
@ -114,7 +111,6 @@ public:
private:
MyMusicModelNode *m_parent;
MyMusicModelNodes m_children;
wxUint32 m_id;
bool m_isContainer;
};
@ -127,19 +123,18 @@ public:
MyMusicModel()
{
m_idCounter = 0;
m_root = new MyMusicModelNode( NULL, GetNewId(), "My Music" );
m_pop = new MyMusicModelNode( m_root, GetNewId(), "Pop music" );
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, GetNewId(),
m_pop->Append( new MyMusicModelNode( m_pop,
"You are not alone", "Michael Jackson", "1995" ) );
m_pop->Append( new MyMusicModelNode( m_pop, GetNewId(),
m_pop->Append( new MyMusicModelNode( m_pop,
"Take a bow", "Madonna", "1994" ) );
m_classical = new MyMusicModelNode( m_root, GetNewId(), "Classical music" );
m_classical = new MyMusicModelNode( m_root, "Classical music" );
m_root->Append( m_classical );
m_classical->Append( new MyMusicModelNode( m_classical, GetNewId(),
m_classical->Append( new MyMusicModelNode( m_classical,
"Ninth symphony", "Ludwig van Beethoven", "1824" ) );
m_classical->Append( new MyMusicModelNode( m_classical, GetNewId(),
m_classical->Append( new MyMusicModelNode( m_classical,
"German Requiem", "Johannes Brahms", "1868" ) );
m_classicalMusicIsKnownToControl = false;
}
@ -150,21 +145,21 @@ public:
{
// add to data
MyMusicModelNode *child_node =
new MyMusicModelNode( m_classical, GetNewId(), title, artist, year );
new MyMusicModelNode( m_classical, title, artist, year );
m_classical->Append( child_node );
if (m_classicalMusicIsKnownToControl)
{
// notify control
wxDataViewItem child( (void*) child_node->GetID() );
wxDataViewItem parent( (void*) m_classical->GetID() );
wxDataViewItem child( (void*) child_node );
wxDataViewItem parent( (void*) m_classical );
ItemAdded( parent, child );
}
}
void Delete( const wxDataViewItem &item )
{
MyMusicModelNode *node = FindNode( item );
MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
node->GetParent()->GetChildren().Remove( node );
delete node;
@ -187,7 +182,7 @@ public:
virtual void GetValue( wxVariant &variant,
const wxDataViewItem &item, unsigned int col ) const
{
MyMusicModelNode *node = FindNode( item );
MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
switch (col)
{
case 0: variant = node->m_title; break;
@ -200,7 +195,7 @@ public:
virtual bool SetValue( const wxVariant &variant,
const wxDataViewItem &item, unsigned int col )
{
MyMusicModelNode *node = FindNode( item );
MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
switch (col)
{
case 0: node->m_title = variant.GetString(); break;
@ -212,20 +207,19 @@ public:
virtual bool HasChildren( const wxDataViewItem &item ) const
{
if (item.GetID() == 0)
MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
if (!node)
return true;
MyMusicModelNode *node = FindNode( item );
return node->IsContainer();
}
virtual wxDataViewItem GetFirstChild( const wxDataViewItem &parent ) const
{
if (parent.GetID() == 0)
return wxDataViewItem( (void*) m_root->GetID() );
MyMusicModelNode *node = (MyMusicModelNode*) parent.GetID();
if (!node)
return wxDataViewItem( (void*) m_root );
MyMusicModelNode *node = FindNode( parent );
if (node->GetChildCount() == 0)
return wxDataViewItem( 0 );
@ -236,12 +230,12 @@ public:
}
MyMusicModelNode *first_child = node->GetChildren().Item( 0 );
return wxDataViewItem( (void*) first_child->GetID() );
return wxDataViewItem( (void*) first_child );
}
virtual wxDataViewItem GetNextSibling( const wxDataViewItem &item ) const
{
MyMusicModelNode *node = FindNode( item );
MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
MyMusicModelNode *parent = node->GetParent();
if (!parent)
return wxDataViewItem(0);
@ -254,45 +248,14 @@ public:
return wxDataViewItem(0);
node = parent->GetChildren().Item( pos+1 );
return wxDataViewItem( (void*) node->GetID() );
return wxDataViewItem( (void*) node );
}
private:
wxUint32 GetNewId() { m_idCounter++; return m_idCounter; }
MyMusicModelNode *FindNodeRec( MyMusicModelNode *node, const wxDataViewItem &item ) const
{
if (node->GetID() == (wxUint32) item.GetID())
return node;
size_t count = node->GetChildCount();
size_t i;
for (i = 0; i < count; i++)
{
MyMusicModelNode *child = node->GetChildren().Item( i );
MyMusicModelNode *node2 = FindNodeRec( child, item );
if (node2)
return node2;
}
return NULL;
}
MyMusicModelNode *FindNode( const wxDataViewItem &item ) const
{
if (item.GetID() == 0)
return NULL;
if (!m_root)
return NULL;
return FindNodeRec( m_root, item );
}
MyMusicModelNode* m_root;
MyMusicModelNode* m_pop;
MyMusicModelNode* m_classical;
bool m_classicalMusicIsKnownToControl;
wxUint32 m_idCounter;
};
// -------------------------------------