#pragma once

#include <QVector>
#include <QRectF>
#include "IxInterface.h"
#include "iPlotBase_global.h"

class QPainter;
class ZxPaintParam;
class ZxRenderItem;
class ZxHandlePolicy;
class ZxPolicy;
class ZxTool;
class ZxRenderView;
class QMenu;
class QPointF;
class QSizeF;
class QKeyEvent;

class I_PLOTBASE_EXPORT ZxEdit
        : virtual public IxInterface
{

private:
    ZxEdit(ZxRenderItem* pItem);
    ~ZxEdit();

public:
	
	void updatePolicyHandles();

    /// 绘制工具的拖曳线/拖曳框等临时的辅助元素
    virtual void onPaint(QPainter* painter, const ZxPaintParam& param);

    /// 获取所属的GraphItem
    ZxRenderItem* getItem() const;

	/// 获取父Item的Edit
    ZxEdit* getParentEdit() const;

    /// 获取当前工具
    ZxTool* getCurrentTool() const;

    /// 获取当前视图
    ZxRenderView* getCurrentToolView() const;

    /// 添加Policy（两个接口基本一致）
    ZxPolicy* add(ZxPolicy* p, bool bAsStatic = false);
    ZxPolicy* addPolicy(ZxPolicy* p, bool bAsStatic = false);

    /// 移除policy（两个接口基本一致）
    ZxPolicy* remove(ZxPolicy* p);
    ZxPolicy* removePolicy(ZxPolicy* p);
    //void deletePolicy(ZxPolicy* p);

    /// 清除全部Policy
    /// @param bClearAll true时清除全部policy, false时只清除动态的policy
    void clear(bool bClearAll = false);

    /// 判断是否有policy
    bool empty() const;

    /// 判断是否有动态Policy
    /// @note 此方法速度较慢
	bool containsDynamicPolicy() const;

    /// 判断是否有静态Policy
    /// @note 此方法速度较慢
    bool containsStaticPolicy() const;

	/// 判断是否包含指定policy
    bool containsPolicy(ZxPolicy* p) const;

    ////////////////////////////////////////////
    /// 内部使用的遍历器
    class I_PLOTBASE_EXPORT const_iterator
    {
        const ZxEdit* m_pEdit;
        int n;
        const_iterator(const ZxEdit* pEdit, int n);

    public:

        ZxPolicy* operator*();

        bool operator!=( const const_iterator& ) const;
        bool operator==( const const_iterator& ) const;
        const_iterator& operator++();

        friend class ZxEdit;
    };

    const_iterator begin() const;
    const_iterator end() const;

    /// 内部使用的遍历器
    class I_PLOTBASE_EXPORT const_reverse_iterator
	{
        const ZxEdit* m_pEdit;
		int n;
        const_reverse_iterator(const ZxEdit* pEdit, int n);

	public:

        ZxPolicy* operator*();

		bool operator!=( const const_reverse_iterator& ) const;
		bool operator==( const const_reverse_iterator& ) const;
		const_reverse_iterator& operator++();

		friend class ZxEdit;
	};

	const_reverse_iterator rbegin() const;
	const_reverse_iterator rend() const;

    ////////////////////////////////////////////

    ZxHandlePolicy* getHandlePolicy() const;
    void setHandlePolicy(ZxHandlePolicy* p, bool bAsStatic = false);

	/// HandlePolicy的数量
	int getHandlePoliciesCount() const;

    virtual void onPrepareContextMenu(QMenu* pMenu, const QPointF& pos);

    virtual void onItemMove(const QPointF& ptOld, const QPointF& ptNew);

    virtual void onItemResize(const QSizeF & szOld, const QSizeF & szNew);

    /// 键
    virtual void onKeyPress(QKeyEvent* event);
    virtual void onKeyRelease(QKeyEvent* event);

	/// 刷新所有policy
	virtual void update();

	virtual QRectF getBounds() const;

private:

    ZxRenderItem* m_pItem;
	QVector<ZxPolicy *> m_vecPolicies;
	int m_nHandlePoliciesCount;

    friend class ZxRenderItem;
};