87 lines
1.9 KiB
C++
87 lines
1.9 KiB
C++
#include<iostream>
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#include<string>
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#include<hgl/type/TreeNode.h>
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using namespace hgl;
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class Folder
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{
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std::string path;
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public:
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Folder()
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{
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path.clear();
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}
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~Folder()
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{
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std::cout<<"~Folder(\""<<path<<"\")"<<std::endl;
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}
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void SetPath(const std::string &p)
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{
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path=p;
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std::cout<<"Folder:\""<<path<<"\""<<std::endl;
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}
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const std::string &GetPath()const
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{
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return path;
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}
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};
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class FolderNode:public TreeNode<Folder>
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{
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public:
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using TreeNode<Folder>::TreeNode;
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~FolderNode()=default;
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void OnAttachParent(TreeNode *node) override
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{
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std::cout<<(*node)->GetPath()<<"\\"<<(*this)->GetPath()<<std::endl;
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}
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void OnDetachParent() override
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{
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TreeNode *node=GetParent();
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std::cout<<"remove "<<(*this)->GetPath()<<" from "<<(*node)->GetPath()<<std::endl;
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}
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};
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int main(int,char **)
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{
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using FolderManager=DataNodeManager<FolderNode>;
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FolderManager manager;
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FolderNode *root=manager.Create();
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(*root)->SetPath("root");
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{
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auto *win=manager.Create();
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(*win)->SetPath("win");
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root->AttachChild(win);
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}
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{
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auto *linux=manager.Create();
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(*linux)->SetPath("linux");
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root->AttachChild(linux);
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delete linux; //手动释放,这里不会产生FolderNode::OnDetachParent是正常现像。
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//因为在完成FolderNode::~FolderNode后，虚拟函数的关系已回退到上一级，所以这一级的已经无效，所以无法产生调用。
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//如果要实现调用，必须在FolderNode::~FolderNode调用DetachAll()
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//这个问题我们可能需要调研，如要完全解决可能需要屏蔽delete操作符的使用，只允许使用Destory
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}
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//自动释放到可以了，但是释放顺序需要处理下
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}
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