WindowManager.h

// Copyright (C), UNIGINE. All rights reserved.
#pragma once


#include <EditorGlobal.h>
#include <QObject>


// Forward decl.
namespace Editor { class Presenter; }
class QWidget;
class QMenu;


namespace Editor
{
// WindowManager.
class EDITOR_API WindowManager final : public QObject
{
    Q_OBJECT

public:
    enum AreaType
    {   
        LAST_USED_AREA,
        NEW_FLOATING_AREA,
        ROOT_AREA_LEFT,
        ROOT_AREA_RIGHT,
        ROOT_AREA_TOP,
        ROOT_AREA_BOTTOM,
        NO_AREA
    };

    enum RefType
    {
        REF_ADD_TO,
        REF_LEFT_OF,
        REF_RIGHT_OF,
        REF_TOP_OF,
        REF_BOTTOM_OF
    };

public:
    static WindowManager *instance();

    static void add(QWidget *widget, AreaType area = LAST_USED_AREA);
    static void add(QWidget *widget, RefType ref, QWidget *area);
    static void add(const QVector<QWidget *> &widgets, AreaType area = LAST_USED_AREA);
    static void add(const QVector<QWidget *> &widgets, RefType ref, QWidget *area);
    static void addCornerWidget(QWidget *parent, QWidget *child);

    static void remove(QWidget *widget);
    static bool has(QWidget *widget);

    static void move(QWidget *widget, AreaType area = LAST_USED_AREA);
    static void move(QWidget *widget, RefType ref, QWidget *area);
    static void move(const QVector<QWidget *> &widgets, AreaType area = LAST_USED_AREA);
    static void move(const QVector<QWidget *> &widgets, RefType ref, QWidget *area);

    static void resize(QWidget *widget, int width, int height);

    static void activate(QWidget *widget);
    static void hide(QWidget *widget);
    static bool isHidden(QWidget *widget);
    static void show(QWidget *widget);
    static bool isVisible(QWidget *widget);

    static QWidget *getArea(QWidget *child);
    static QVector<QWidget *> allWindows();

    static QMenu *findMenu(const QString &name);

signals:
    void windowShown  (QWidget *widget);
    void beforeHide   (QWidget *widget);
    void windowHidden (QWidget *widget);
    void stateRestored();

private:
    explicit WindowManager(QObject *parent = nullptr);
    ~WindowManager() override;

    friend class Editor::Presenter;
};


} // namespace Editor