void BSTree<DataType,KeyType>:: showHelper ( BSTreeNode *p,
int level ) const
// Recursive helper for showStructure.
// Outputs the subtree whose root node is pointed to by p.
// Parameter level is the level of this node within the tree.
{
int j; // Loop counter
if ( p != 0 )
{
showHelper(p->right,level+1); // Output right subtree
for ( j = 0 ; j < level ; j++ ) // Tab over to level
cout << "\t";
cout << " " << p->dataItem.getKey(); // Output key
if ( ( p->left != 0 ) && // Output "connector"
( p->right != 0 ) )
cout << "<";
else if ( p->right != 0 )
cout << "/";
else if ( p->left != 0 )
cout << "\\";
cout << endl;
showHelper(p->left,level+1); // Output left subtree
}
}
void BSTree<DataType,KeyType>:: showStructure () const
// Outputs the keys in a binary search tree. The tree is output
// rotated counterclockwise 90 degrees from its conventional
// orientation using a "reverse" inorder traversal. This operation is
// intended for testing and debugging purposes only.
{
if ( root == 0 )
cout << "Empty tree" << endl;
else
{
cout << endl;
showHelper(root,1);
cout << endl;
}
}
void GtkFileDialog::setVisible(bool visible) {
if (visible) {
if (testAttribute(Qt::WA_WState_ExplicitShowHide) && !testAttribute(Qt::WA_WState_Hidden)) {
return;
}
} else if (testAttribute(Qt::WA_WState_ExplicitShowHide) && testAttribute(Qt::WA_WState_Hidden)) {
return;
}
if (visible) {
showHelper(windowFlags(), windowModality(), parentWidget() ? parentWidget()->windowHandle() : nullptr);
} else {
hideHelper();
}
// Set WA_DontShowOnScreen so that QDialog::setVisible(visible) below
// updates the state correctly, but skips showing the non-native version:
setAttribute(Qt::WA_DontShowOnScreen);
QDialog::setVisible(visible);
}
