/*
Copyright (C) 2012, University of Cambridge, Department of Psychiatry.
Created by Rudolf Cardinal (rnc1001@cam.ac.uk).
This file is part of CamCOPS.
CamCOPS is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
CamCOPS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with CamCOPS. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include <QDebug>
#include <QString>
class CamcopsApp;
// https://doc.qt.io/qt-6.5/qtwidgets-itemviews-simpletreemodel-example.html
// Represents a diagnostic code in a tree structure.
// For example, in ICD-10, we have
// code = "F20.0", description = "Paranoid schizophrenia".
// This sits in a tree structure (e.g. its parent is F20).
class DiagnosticCode
{
public:
// Column 0 in a QTreeView gets the expand/collapse artwork, so we want
// our "display" one there.
static constexpr int COLUMN_FULLNAME = 0;
static constexpr int COLUMN_CODE = 1;
static constexpr int COLUMN_DESCRIPTION = 2;
static constexpr int COLUMN_SELECTABLE = 3;
static constexpr int N_COLUMNS = 4;
// http://stackoverflow.com/questions/22318787/const-int-variable-cannot-appear-in-a-constant-expression
public:
// Creates a code, referring to its parent (pass parent = nullptr for the
// root of the tree).
// Args:
// code: the code, e.g. "F20.0"
// description: description, as above
// parent: parent in the tree, or nullptr if this is the root
// depth: depth, usually 0 for the root
// selectable: may the user choose this node (or is it e.g. too generic)?
// show_code_in_full_name: incorporate the code as well as the description
// into the full name?
DiagnosticCode(const QString& code, const QString& description,
DiagnosticCode* parent, int depth, bool selectable,
bool show_code_in_full_name = true);
~DiagnosticCode();
// ------------------------------------------------------------------------
// For our tree structure:
// ------------------------------------------------------------------------
// Adds a child.
void appendChild(DiagnosticCode* child);
// Returns the child at the specified position (or nullptr).
DiagnosticCode* child(int row) const;
// Returns the parent (or nullptr).
DiagnosticCode* parent() const;
// How many children?
int childCount() const;
// How many descendants?
int descendantCount() const;
// Which row number is this, in the parent's list of children?
int row() const;
// How many columns (for a QTreeView representation)?
int columnCount() const;
// Returns data for the specified column (see constants above; e.g.
// column 1 is the code).
QVariant data(int column) const;
// ------------------------------------------------------------------------
// Actual data
// ------------------------------------------------------------------------
// Returns the code
QString code() const;
// Returns the description
QString description() const;
// Returns the fullname (code + description, or just description).
// For pick-lists.
QString fullname() const;
// ------------------------------------------------------------------------
// More tree info:
// ------------------------------------------------------------------------
// Returns the depth.
int depth() const; // for convenience only
// Is this node selectable?
bool selectable() const;
// Does this node have children?
bool hasChildren() const;
protected:
DiagnosticCode* m_parent;
QVector<DiagnosticCode*> m_children; // owns its children
QString m_code;
QString m_description;
int m_depth;
bool m_selectable;
bool m_show_code_in_full_name;
public:
// Debugging description
friend QDebug operator<<(QDebug debug, const DiagnosticCode& dc);
// Debugging description
friend QTextStream& operator<<(QTextStream& stream, const DiagnosticCode& dc);
};