TreeView.h

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#pragma once
 
#include "Component.h"
#include "PopupMenu.h"
 
class TreeViewItem
{
public:
    wstring _parentId;           
    wstring _id;                 
    wstring _text;               
    wstring _nodeType;           
    Bounds _expandCollapseRect;    
    Bounds _iconRect;              
    Bounds _textRect;              
    long _indentLevel;           
    BOOL _hasChildren;           
    BOOL _isExpanded;            
};
 
class TreeViewMenuItem : public PopupMenuItem
{
public:
    wstring _nodeType;          
};

class TreeView : public Component
{
    wstring _title;                              
    vector<TreeViewItem> _allItems;             
    vector<TreeViewItem> _visibleItems;         
 
    vector<TreeViewMenuItem> _contextMenuItems; 
 
    long _maxVisibleItems;       
    long _firstVisibleItem;      
    long _lastVisibleItem;       
    long _currentItem;           

    void ReloadVisibleItems();
 
protected:
    BOOL getCreateWindowOptions(wstring& title, UINT& widownStyles, wstring& wndClassName, BOOL& isCustomWndProc);
    void windowCreated();
 
public:
    TreeView();

    virtual ~TreeView();

    void clear();

    void setTitle(const wstring& title);

    long addItem(const wstring& itemText, const wstring& itemId = L"", const wstring& parentId = L"", const wstring& nodeType = L"");
    
    BOOL updateItem(const wstring& itemId, const wstring& itemText);
    
    BOOL deleteItem(const wstring& itemId);
 
    long addPath(const wstring& itemPath, const wstring& parentId = L"");

    long getItemCount();
 
    BOOL getItem(long itemIndex, wstring& itemText, wstring& itemId, wstring& parentId, wstring& itemPath);

    long getSelectedItem(wstring& itemText, wstring& itemId, wstring& parentId, wstring& itemPath);

    void addContextMenuItem(long actionId, const wstring& text, const wstring& nodeType = L"");

    void onPaint(Graphics *g);
    void onWindowResized();
 
    void onArrowUp(BOOL shiftPressed, BOOL ctrlPressed);
    void onArrowDown(BOOL shiftPressed, BOOL ctrlPressed);
    void onPageUp(BOOL shiftPressed, BOOL ctrlPressed);
    void onPageDown(BOOL shiftPressed, BOOL ctrlPressed);
    void onKeyHome(BOOL shiftPressed, BOOL ctrlPressed);
    void onKeyEnd(BOOL shiftPressed, BOOL ctrlPressed);
 
    void onMousePressed(WinHandle hWnd, int x, int y, int clickCount, BOOL shiftPressed, BOOL ctrlPressed);
    void onMouseRightClicked(WinHandle hWnd, int x, int y, BOOL shiftPressed, BOOL ctrlPressed);
    BOOL onMouseWheel(WinHandle hWnd, int x, int y, int delta);

    BOOL getScrollingInfo(__int64& scrollMin, __int64& scrollMax, __int64& pageSize);

    void setScrollbarTopOffset(__int64 firstVisibleRow);

    void addActionListener(ActionListener* l);

    void addSelectionChangedListener(SelectionChangeListener* l);
};