axmol/core/2d/ProtectedNode.h

/****************************************************************************
 Copyright (c) 2008-2010 Ricardo Quesada
 Copyright (c) 2009      Valentin Milea
 Copyright (c) 2010-2012 cocos2d-x.org
 Copyright (c) 2011      Zynga Inc.
 Copyright (c) 2013-2016 Chukong Technologies Inc.
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
 Copyright (c) 2019-present Axmol Engine contributors (see AUTHORS.md).

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#ifndef __CPROTECTEDCNODE_H__
#define __CPROTECTEDCNODE_H__

#include "2d/Node.h"

namespace ax
{

/**
 * @addtogroup _2d
 * @{
 */

/**
 *@brief A inner node type mainly used for UI module.
 * It is useful for composing complex node type and it's children are protected.
 */
class AX_DLL ProtectedNode : public Node
{
public:
    /**
     * Creates a ProtectedNode with no argument.
     *@return A instance of ProtectedNode.
     */
    static ProtectedNode* create();

    /// @{
    /// @name Children and Parent

    /**
     * Adds a child to the container with z-order as 0.
     *
     * If the child is added to a 'running' node, then 'onEnter' and 'onEnterTransitionDidFinish' will be called
     * immediately.
     *
     * @param child A child node
     */
    virtual void addProtectedChild(Node* child);
    /**
     * Adds a child to the container with a local z-order.
     *
     * If the child is added to a 'running' node, then 'onEnter' and 'onEnterTransitionDidFinish' will be called
     * immediately.
     *
     * @param child     A child node
     * @param localZOrder    Z order for drawing priority. Please refer to `setLocalZOrder(int)`
     */
    virtual void addProtectedChild(Node* child, int localZOrder);
    /**
     * Adds a child to the container with z order and tag.
     *
     * If the child is added to a 'running' node, then 'onEnter' and 'onEnterTransitionDidFinish' will be called
     * immediately.
     *
     * @param child     A child node
     * @param localZOrder    Z order for drawing priority. Please refer to `setLocalZOrder(int)`
     * @param tag       An integer to identify the node easily. Please refer to `setTag(int)`
     */
    virtual void addProtectedChild(Node* child, int localZOrder, int tag);
    /**
     * Gets a child from the container with its tag.
     *
     * @param tag   An identifier to find the child node.
     *
     * @return a Node object whose tag equals to the input parameter.
     */
    virtual Node* getProtectedChildByTag(int tag);

    /**
     * Gets a child from the container with its name.
     *
     * @param name An identifier to find the child node.
     *
     * @return a Node object whose name equals to the input parameter.
     */
    virtual Node* getProtectedChildByName(std::string_view name);

    ////// REMOVES //////

    /**
     * Removes a child from the container. It will also cleanup all running actions depending on the cleanup parameter.
     *
     * @param child     The child node which will be removed.
     * @param cleanup   true if all running actions and callbacks on the child node will be cleanup, false otherwise.
     */
    virtual void removeProtectedChild(Node* child, bool cleanup = true);

    /**
     * Removes a child from the container by tag value. It will also cleanup all running actions depending on the
     * cleanup parameter.
     *
     * @param tag       An integer number that identifies a child node.
     * @param cleanup   true if all running actions and callbacks on the child node will be cleanup, false otherwise.
     */
    virtual void removeProtectedChildByTag(int tag, bool cleanup = true);

    /**
     * Removes all children from the container with a cleanup.
     *
     * @see `removeAllChildrenWithCleanup(bool)`.
     */
    virtual void removeAllProtectedChildren();
    /**
     * Removes all children from the container, and do a cleanup to all running actions depending on the cleanup
     * parameter.
     *
     * @param cleanup   true if all running actions on all children nodes should be cleanup, false otherwise.
     * @js removeAllChildren
     * @lua removeAllChildren
     */
    virtual void removeAllProtectedChildrenWithCleanup(bool cleanup);

    /**
     * Reorders a child according to a new z value.
     *
     * @param child     An already added child node. It MUST be already added.
     * @param localZOrder Z order for drawing priority. Please refer to setLocalZOrder(int)
     */
    virtual void reorderProtectedChild(Node* child, int localZOrder);

    /**
     * Sorts the children array once before drawing, instead of every time when a child is added or reordered.
     * This approach can improves the performance massively.
     * @note Don't call this manually unless a child added needs to be removed in the same frame
     */
    virtual void sortAllProtectedChildren();

    const Vector<Node*>& getProtectedChildren() const { return _protectedChildren; }

    /// @} end of Children and Parent

    /**
     * @js NA
     */
    virtual void visit(Renderer* renderer, const Mat4& parentTransform, uint32_t parentFlags) override;

    virtual void cleanup() override;

    virtual void onEnter() override;

    /** Event callback that is invoked when the Node enters in the 'stage'.
     * If the Node enters the 'stage' with a transition, this event is called when the transition finishes.
     * If you override onEnterTransitionDidFinish, you shall call its parent's one, e.g.
     * Node::onEnterTransitionDidFinish()
     * @js NA
     * @lua NA
     */
    virtual void onEnterTransitionDidFinish() override;

    /**
     * Event callback that is invoked every time the Node leaves the 'stage'.
     * If the Node leaves the 'stage' with a transition, this event is called when the transition finishes.
     * During onExit you can't access a sibling node.
     * If you override onExit, you shall call its parent's one, e.g., Node::onExit().
     * @js NA
     * @lua NA
     */
    virtual void onExit() override;

    /**
     * Event callback that is called every time the Node leaves the 'stage'.
     * If the Node leaves the 'stage' with a transition, this callback is called when the transition starts.
     * @js NA
     * @lua NA
     */
    virtual void onExitTransitionDidStart() override;

    virtual void updateDisplayedOpacity(uint8_t parentOpacity) override;
    virtual void updateDisplayedColor(const Color3B& parentColor) override;
    virtual void disableCascadeColor() override;
    virtual void disableCascadeOpacity() override;
    virtual void setCameraMask(unsigned short mask, bool applyChildren = true) override;
    virtual void setGlobalZOrder(float globalZOrder) override;
    ProtectedNode();
    virtual ~ProtectedNode();

protected:
    /// helper that reorder a child
    void insertProtectedChild(Node* child, int z);

    Vector<Node*> _protectedChildren;  ///< array of children nodes
    bool _reorderProtectedChildDirty;

private:
    AX_DISALLOW_COPY_AND_ASSIGN(ProtectedNode);
};

// end of 2d group
/// @}

}

#endif  // __CPROTECTEDCNODE_H__