AutoComplete.h

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#pragma once
 
#include "Component.h"
#include "ListBox.h"
 
class AutoCompleteListener
{
public:
 
    virtual BOOL getSuggestions(const wstring& text, vector<wstring>& suggestions) = 0;
};

class AutoComplete : public Component,
                      public SelectionChangeListener
{
    wstring _text;      
 
    AutoCompleteListener* _listener;

    ListBox _listBox;
 
    void showList();
    void hideList();
    void toggleList();
 
protected:
    BOOL getCreateWindowOptions(wstring& title, UINT& widownStyles, wstring& wndClassName, BOOL& isCustomWndProc);

    void windowCreated();
 
public:
    AutoComplete();

    virtual ~AutoComplete();

    int getPreferredHeight();
 
    void setListener(AutoCompleteListener* l);

    void setText(const wstring& text);

    wstring getText();

    void setOptions(const vector<wstring>& selections);

    void onPaint(Graphics *g);

    void onWindowResized();

    void onWindowMoved();

    void onSelectionChanged(const SelectionChangeEvent& ev);
 
    void onMousePressed(WinHandle hWnd, int x, int y, int clickCount, BOOL shiftPressed, BOOL ctrlPressed);

    void onDataChanged(WinHandle hTarget, const wstring& newValue, const ProcParams& procParams);

    void addDataChangedListener(DataChangeListener* l);
};