commit 2abe6733bd05abd92a07b24e07089afb2f3bc9e1
Author: kiritow <1362050620@qq.com>
Date:   Wed Apr 12 17:17:38 2017 +0800

    Initial Commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..f6f63c7
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+bin/
+obj/
+
diff --git a/CUI.cpp b/CUI.cpp
new file mode 100644
index 0000000..b5d37fa
--- /dev/null
+++ b/CUI.cpp
@@ -0,0 +1,279 @@
+#include "CUI.h"
+#include <cstdio>
+
+Selection::Selection()
+{
+    id=-1;
+}
+
+//virtual
+void Selection::drawText()
+{
+    printf("%s",text.c_str());
+}
+
+//virtual
+void Selection::drawInfo()
+{
+    printf("%s",info.c_str());
+}
+
+bool Selection::hasInfo()
+{
+    return !info.empty();
+}
+
+//virtual
+int Selection::onClick()
+{
+    return 0;
+}
+
+Page::Page()
+{
+
+}
+
+Page::~Page()
+{
+
+}
+
+//virtual
+void Page::draw()
+{
+    if(!title.empty())
+    {
+        printf("%s\n",title.c_str());
+    }
+    if(!text.empty())
+    {
+        printf("%s\n",text.c_str());
+    }
+
+    int id=1;
+    for(std::list<Selection*>::iterator iter=_vec.begin();iter!=_vec.end();iter++)
+    {
+        printf("%d ",id);
+        (*iter)->drawText();
+        if((*iter)->hasInfo())
+        {
+            printf(" (");
+            (*iter)->drawInfo();
+            printf(")");
+        }
+        printf("\n");
+        ++id;
+    }
+    printf("\n");
+}
+
+//virtual
+void Page::onLoad()
+{
+
+}
+
+//virtual
+int Page::onUnload()
+{
+    return 0;
+}
+
+//virtual
+void Page::onForeground()
+{
+
+}
+
+//virtual
+void Page::onBackground()
+{
+
+}
+
+int Page::getSelectionSize()
+{
+    return _vec.size();
+}
+
+int Page::onActive(int id)
+{
+    int left=id;
+    std::list<Selection*>::iterator iter=_vec.begin();
+    while(left>0)
+    {
+        ++iter;
+        --left;
+    }
+    return (*iter)->onClick();
+}
+
+void Page::setFrame(Frame* f)
+{
+    _pframe=f;
+}
+
+Frame* Page::getFrame()
+{
+    return _pframe;
+}
+
+void Page::add(Selection* p)
+{
+    _vec.push_back(p);
+}
+
+Frame::Frame()
+{
+    _page=nullptr;
+    _cpage=nullptr;
+    _npage=nullptr;
+}
+
+Frame::~Frame()
+{
+
+}
+
+//protected
+void Frame::clearScreen()
+{
+    system("cls");
+}
+
+//protected
+void Frame::clearInput()
+{
+    fflush(stdin);
+}
+
+//protected
+int Frame::onInvalidInput()
+{
+    clearInput();
+    printf("Invalid Input.\n");
+    return 0;
+}
+
+void Frame::setPage(Page* p)
+{
+    _page=p;
+    p->setFrame(this);
+}
+
+Page* Frame::getPage()
+{
+    return _page;
+}
+
+void Frame::jumpTo(Page* p)
+{
+    _npage=p;
+}
+
+void Frame::run()
+{
+    /// No Page
+    if(_page==nullptr) return;
+
+    bool stop=false;
+    _cpage=_page;
+
+    _cpage->onLoad();
+
+    while(!stop)
+    {
+        clearScreen();
+        _cpage->draw();
+        if(_cpage->getSelectionSize()>0)
+        {
+            int uinput;
+            while(scanf("%d%*c",&uinput)!=1)
+            {
+                if(onInvalidInput()!=0)
+                {
+                    stop=true;
+                    break;
+                }
+            }
+            if(stop) continue;
+
+            if(uinput<1||uinput>_cpage->getSelectionSize())
+            {
+                if(onInvalidInput()!=0)
+                {
+                    stop=true;
+                    continue;
+                }
+            }
+
+            int ret=_cpage->onActive(uinput-1);
+            switch(ret)
+            {
+            case 2:
+                stop=true;
+                break;
+            case 1:
+                {
+                    if(_stk.empty())
+                    {
+                        stop=true;
+                    }
+                    else
+                    {
+                        /// Unload Current Page
+                        if(_cpage->onUnload()==0)
+                        {
+                            delete _cpage;
+                        }
+                        _cpage=_stk.top();
+                        _stk.pop();
+                        _cpage->onForeground();
+                    }
+                }
+                break;
+            case 0:
+                {
+                    if(_npage!=nullptr)
+                    {
+                        /// New Page.
+                        _cpage->onBackground();
+                        _stk.push(_cpage);
+                        _cpage=_npage;
+                        _npage=nullptr;
+                        _cpage->onLoad();
+                    }
+                    else
+                    {
+                        /// continue running.
+                    }
+                }
+                break;
+            }
+        }
+        else
+        {
+            /// No Selection on page...
+            stop=true;
+        }
+    }
+
+    if(_cpage->onUnload()==0)
+    {
+        delete _cpage;
+    }
+    _cpage=nullptr;
+
+    /// Unload all inactive pages.
+    while(!_stk.empty())
+    {
+        _cpage=_stk.top();
+        _stk.pop();
+        if(_cpage->onUnload()==0)
+        {
+            delete _cpage;
+        }
+        _cpage=nullptr;
+    }
+}
diff --git a/CUI.h b/CUI.h
new file mode 100644
index 0000000..feee006
--- /dev/null
+++ b/CUI.h
@@ -0,0 +1,87 @@
+#pragma once
+#include <list>
+#include <string>
+#include <stack>
+
+/// Fwd DECL
+class Frame;
+
+class Selection
+{
+public:
+    Selection();
+    int id;
+    std::string text;
+    std::string info;
+
+    virtual void drawText();
+    virtual void drawInfo();
+    bool hasInfo();
+    Frame* getFrame();
+    void setFrame();
+
+    /// return 2 to exit.
+    /// return 1 to return last page.(If no page to return, exit the program)
+    /// return 0 to continue running.(If you want to change page, you should return 0)
+    virtual int onClick();
+private:
+    Frame* _pframe;
+};
+
+class Page
+{
+public:
+    Page();
+    virtual ~Page();
+    std::string title;
+    std::string text;
+
+    void add(Selection*);
+    int del(Selection*);
+    int getSelectionSize();
+
+    Frame* getFrame();
+    void setFrame(Frame*);
+
+    virtual void draw();
+
+    virtual void onLoad();
+    virtual void onForeground();
+    virtual void onBackground();
+    /// return 0 tell frame to delete page, return 1 tell frame not to delete
+    virtual int onUnload();
+
+    virtual int onActive(int id);
+private:
+    std::list<Selection*> _vec;
+    Frame* _pframe;
+};
+
+class Frame
+{
+public:
+    Frame();
+    ~Frame();
+    void run();
+    Page* getPage();
+    void setPage(Page*);
+
+    void jumpTo(Page*);
+
+protected:
+    void clearScreen();
+    void clearInput();
+
+    /// return 1 if error cannot be solve. return 0 on solved problem.
+    int onInvalidInput();
+private:
+    /// First Page.
+    Page* _page;
+    /// Current Processing Page (Internal Variable)
+    Page* _cpage;
+    /// Next Page to be processed (Internal Variable)
+    Page* _npage;
+    /// Inactive Page Stack (Internal Variable)
+    std::stack<Page*> _stk;
+};
+