+wxDataViewEvent wxDataViewMainWindow::SendExpanderEvent( wxEventType type,
+ const wxDataViewItem & item )
+{
+ wxWindow *parent = GetParent();
+ wxDataViewEvent le(type, parent->GetId());
+
+ le.SetEventObject(parent);
+ le.SetModel(GetOwner()->GetModel());
+ le.SetItem( item );
+
+ parent->GetEventHandler()->ProcessEvent(le);
+ return le;
+}
+
+bool wxDataViewMainWindow::IsExpanded( unsigned int row ) const
+{
+ if (IsVirtualList())
+ return false;
+
+ wxDataViewTreeNode * node = GetTreeNodeByRow(row);
+ if (!node)
+ return false;
+
+ if (!node->HasChildren())
+ {
+ delete node;
+ return false;
+ }
+
+ return node->IsOpen();
+}
+
+bool wxDataViewMainWindow::HasChildren( unsigned int row ) const
+{
+ if (IsVirtualList())
+ return false;
+
+ wxDataViewTreeNode * node = GetTreeNodeByRow(row);
+ if (!node)
+ return false;
+
+ if (!node->HasChildren())
+ {
+ delete node;
+ return false;
+ }
+
+ return true;
+}
+
+void wxDataViewMainWindow::Expand( unsigned int row )
+{
+ if (IsVirtualList())
+ return;
+
+ wxDataViewTreeNode * node = GetTreeNodeByRow(row);
+ if (!node)
+ return;
+
+ if (!node->HasChildren())
+ {
+ delete node;
+ return;
+ }
+
+ if (!node->IsOpen())
+ {
+ wxDataViewEvent e =
+ SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING, node->GetItem());
+
+ // Check if the user prevent expanding
+ if( e.GetSkipped() )
+ return;
+
+ node->ToggleOpen();
+
+ // build the children of current node
+ if( node->GetChildrenNumber() == 0 )
+ {
+ SortPrepare();
+ ::BuildTreeHelper(GetOwner()->GetModel(), node->GetItem(), node);
+ }
+
+ // By expanding the node all row indices that are currently in the selection list
+ // and are greater than our node have become invalid. So we have to correct that now.
+ const unsigned rowAdjustment = node->GetSubTreeCount();
+ for(unsigned i=0; i<m_selection.size(); ++i)
+ {
+ const unsigned testRow = m_selection[i];
+ // all rows above us are not affected, so skip them
+ if(testRow <= row)
+ continue;
+
+ m_selection[i] += rowAdjustment;
+ }
+
+ if(m_currentRow > row)
+ ChangeCurrentRow(m_currentRow + rowAdjustment);
+
+ m_count = -1;
+ UpdateDisplay();
+ // Send the expanded event
+ SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED,node->GetItem());
+ }
+}
+
+void wxDataViewMainWindow::Collapse(unsigned int row)
+{
+ if (IsVirtualList())
+ return;
+
+ wxDataViewTreeNode *node = GetTreeNodeByRow(row);
+ if (!node)
+ return;
+
+ if (!node->HasChildren())
+ {
+ delete node;
+ return;
+ }
+
+ if (node->IsOpen())
+ {
+ wxDataViewEvent e =
+ SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING,node->GetItem());
+ if( e.GetSkipped() )
+ return;
+
+ // Find out if there are selected items below the current node.
+ bool selectCollapsingRow = false;
+ const unsigned rowAdjustment = node->GetSubTreeCount();
+ unsigned maxRowToBeTested = row + rowAdjustment;
+ for(unsigned i=0; i<m_selection.size(); ++i)
+ {
+ const unsigned testRow = m_selection[i];
+ if(testRow > row && testRow <= maxRowToBeTested)
+ {
+ selectCollapsingRow = true;
+ // get out as soon as we have found a node that is selected
+ break;
+ }
+ }
+
+ node->ToggleOpen();
+
+ // If the node to be closed has selected items the user won't see those any longer.
+ // We select the collapsing node in this case.
+ if(selectCollapsingRow)
+ {
+ SelectAllRows(false);
+ ChangeCurrentRow(row);
+ SelectRow(row, true);
+ SendSelectionChangedEvent(GetItemByRow(row));
+ }
+ else
+ {
+ // if there were no selected items below our node we still need to "fix" the
+ // selection list to adjust for the changing of the row indices.
+ // We actually do the opposite of what we are doing in Expand().
+ for(unsigned i=0; i<m_selection.size(); ++i)
+ {
+ const unsigned testRow = m_selection[i];
+ // all rows above us are not affected, so skip them
+ if(testRow <= row)
+ continue;
+
+ m_selection[i] -= rowAdjustment;
+ }
+
+ // if the "current row" is being collapsed away we change it to the current row ;-)
+ if(m_currentRow > row && m_currentRow <= maxRowToBeTested)
+ ChangeCurrentRow(row);
+ else if(m_currentRow > row)
+ ChangeCurrentRow(m_currentRow - rowAdjustment);
+ }
+
+ m_count = -1;
+ UpdateDisplay();
+ SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED,node->GetItem());
+ }
+}
+
+wxDataViewTreeNode * wxDataViewMainWindow::FindNode( const wxDataViewItem & item )
+{
+ wxDataViewModel * model = GetOwner()->GetModel();
+ if( model == NULL )
+ return NULL;
+
+ if (!item.IsOk())
+ return m_root;
+
+ // Compose the a parent-chain of the finding item
+ ItemList list;
+ list.DeleteContents( true );
+ wxDataViewItem it( item );
+ while( it.IsOk() )
+ {
+ wxDataViewItem * pItem = new wxDataViewItem( it );
+ list.Insert( pItem );
+ it = model->GetParent( it );
+ }
+
+ // Find the item along the parent-chain.
+ // This algorithm is designed to speed up the node-finding method
+ wxDataViewTreeNode * node = m_root;
+ for( ItemList::const_iterator iter = list.begin(); iter !=list.end(); iter++ )
+ {
+ if( node->HasChildren() )
+ {
+ if( node->GetChildrenNumber() == 0 )
+ {
+ SortPrepare();
+ ::BuildTreeHelper(model, node->GetItem(), node);
+ }
+
+ wxDataViewTreeNodes nodes = node->GetNodes();
+ unsigned int i;
+ bool found = false;
+
+ for (i = 0; i < nodes.GetCount(); i ++)
+ {
+ if (nodes[i]->GetItem() == (**iter))
+ {
+ if (nodes[i]->GetItem() == item)
+ return nodes[i];
+
+ node = nodes[i];
+ found = true;
+ break;
+ }
+ }
+ if (!found)
+ return NULL;
+ }
+ else
+ return NULL;
+ }
+ return NULL;
+}
+
+void wxDataViewMainWindow::HitTest( const wxPoint & point, wxDataViewItem & item,
+ wxDataViewColumn* &column )
+{
+ wxDataViewColumn *col = NULL;
+ unsigned int cols = GetOwner()->GetColumnCount();
+ unsigned int colnum = 0;
+ int x, y;
+ m_owner->CalcUnscrolledPosition( point.x, point.y, &x, &y );
+ for (unsigned x_start = 0; colnum < cols; colnum++)
+ {
+ col = GetOwner()->GetColumnAt(colnum);
+ if (col->IsHidden())
+ continue; // skip it!
+
+ unsigned int w = col->GetWidth();
+ if (x_start+w >= (unsigned int)x)
+ break;
+
+ x_start += w;
+ }
+
+ column = col;
+ item = GetItemByRow( GetLineAt( y ) );
+}
+
+wxRect wxDataViewMainWindow::GetItemRect( const wxDataViewItem & item,
+ const wxDataViewColumn* column )
+{
+ int xpos = 0;
+ int width = 0;
+
+ unsigned int cols = GetOwner()->GetColumnCount();
+ // If column is null the loop will compute the combined width of all columns.
+ // Otherwise, it will compute the x position of the column we are looking for.
+ for (unsigned int i = 0; i < cols; i++)
+ {
+ wxDataViewColumn* col = GetOwner()->GetColumnAt( i );
+
+ if (col == column)
+ break;
+
+ if (col->IsHidden())
+ continue; // skip it!
+
+ xpos += col->GetWidth();
+ width += col->GetWidth();
+ }
+
+ if(column != 0)
+ {
+ // If we have a column, we need can get its width directly.
+ if(column->IsHidden())
+ width = 0;
+ else
+ width = column->GetWidth();
+
+ }
+ else
+ {
+ // If we have no column, we reset the x position back to zero.
+ xpos = 0;
+ }
+
+ // we have to take an expander column into account and compute its indentation
+ // to get the correct x position where the actual text is
+ int indent = 0;
+ int row = GetRowByItem(item);
+ if (!IsVirtualList() && (column == 0 || GetOwner()->GetExpanderColumn() == column) )
+ {
+ wxDataViewTreeNode* node = GetTreeNodeByRow(row);
+ indent = GetOwner()->GetIndent() * node->GetIndentLevel();
+ indent = indent + m_lineHeight; // use m_lineHeight as the width of the expander
+
+ if(!node->HasChildren())
+ delete node;
+ }
+
+ wxRect itemRect( xpos + indent,
+ GetLineStart( row ),
+ width - indent,
+ GetLineHeight( row ) );
+
+ GetOwner()->CalcScrolledPosition( itemRect.x, itemRect.y,
+ &itemRect.x, &itemRect.y );
+
+ return itemRect;
+}
+
+int wxDataViewMainWindow::RecalculateCount()
+{
+ if (!m_root)
+ {
+ wxDataViewIndexListModel *list_model =
+ (wxDataViewIndexListModel*) GetOwner()->GetModel();
+#ifndef __WXMAC__
+ return list_model->GetLastIndex() + 1;
+#else
+ return list_model->GetLastIndex() - 1;
+#endif
+ }
+ else
+ {
+ return m_root->GetSubTreeCount();
+ }
+}
+
projects / wxWidgets.git / blobdiff