Grid.h

Go to the documentation of this file.

#pragma once
 
#include "Component.h"
#include "TextField.h"
#include "MaskedField.h"
#include "ComboBox.h"
#include "Models.h"
#include "DateTimePicker.h"
#include "CheckBox.h"
#include "Scrollbar.h"
 
class GridColumn
{
public:
    GridColumn()
    {
        _isVisible = TRUE;
        _isEditable = FALSE;
        _editor = NULL;
        _editStyle = EditType::TEXTFIELD;
        _editOptions = {};
 
        _columnStartX = 0;
        _columnEndX = 0;
        _sortIndicatorRect = { 0,0,0,0 };
    }
 
    wstring _title, _name;   
    long _alignment;                
    long _widthRatio;
    long _calculatedWidth;
    int _columnStartX, _columnEndX;
    Bounds _sortIndicatorRect;
    
    BOOL _isVisible;
    BOOL _isSortable;
    BOOL _isFilterable;
    BOOL _isEditable;
    wstring _computedColumnExpression;
    EditType _editStyle;
    vector<wstring> _editOptions;
    Component* _editor;
};
 
class GridRow
{
public:
    vector<wstring> _values; 
    Bounds _rect;              
};

class Grid : public Component, public ScrollbarListener
{
    Scrollbar _scrollBar;
 
    GridChangeListener* _gridChangeListener; 
 
    Pager* _pager;                
    PagerRequest _pagerRequest;   
    BOOL _pageFetched;            
    BOOL _isLoadingPage;          
    __int64 _lastLoadedFirstVisibleRow;
    __int64 _lastLoadedMaxVisibleRows;
    __int64 _totalRowCount;       
 
    wstring _sortedBy;            
    SortType _sortDirection;     
 
    Bounds _pageHomeBtnRect;        
    Bounds _pagePrevBtnRect;        
    Bounds _pageNextBtnRect;        
    Bounds _pageEndBtnRect;         
 
    vector<GridColumn> _columns;  
    vector<GridRow> _rows;        
 
    long _maxVisibleRows;         
    __int64 _firstVisibleRow;        
    __int64 _lastVisibleRow;         
    __int64 _currentRow;             
    long _currentColumn;          
 
    BOOL _isStriped;            
 
    TextField _textEditor;        
    MaskedField _maskEditor;        
    ComboBox _comboEditor;        
    Component* _currentCellEditor;  
    EditType _currentCellEditorStyle;
    __int64 _editorRowIndex, _editorColumnIndex;
 
    void FixRow(__int64 rowIndex);   
    void LayoutColumns();         
 
    void ResetPaging();           
    void LoadPage(BOOL doPaint = TRUE); 
 
    void SetCurrentCell(__int64 rowIndex, long columnIndex, BOOL& isNewCellEditable);
    void HideEditor();
 
    BOOL FireCellValueChangeEvent(__int64 rowIndex, const wstring& columnName, const wstring& oldValue, const wstring& newValue);
 
protected:
    BOOL getCreateWindowOptions(wstring& title, UINT& widownStyles, wstring& wndClassName, BOOL& isCustomWndProc) override;
    void windowCreated() override;
 
public:
    Grid();
    virtual ~Grid();
 
    void setPager(Pager* pager); 
    void reloadPage();
    void resetPaging();
 
    void setStriped(BOOL isStriped);
 
    void clear();                
    void clearRows();
 
    vector<GridColumn> getColumns(); 
    void addColumn(const wstring& name, const wstring& title, BOOL isVisible, UINT widthRatio, long alignment = -1, 
        BOOL isSortable = FALSE, BOOL isFilterable = FALSE, BOOL isEditable = FALSE,
        const EditType& editStyle = EditType::TEXTFIELD, 
        const vector<wstring>& editOptions = {},
        const wstring& computedColumnExpression = L""); 
 
    void setColumnEditor(long columnIndex, Component* component); 
    Component* getColumnEditor(long columnIndex);                 
 
    __int64 getRowCount();          
    __int64 getSelectedRow();       
    __int64 addRow();               
 
    void setCellValue(__int64 rowIndex, long columnIndex, const wstring& value); 
    wstring getCellValue(__int64 rowIndex, long columnIndex);                   
    void setCellValue(__int64 rowIndex, const wstring& columnName, const wstring& value); 
    wstring getCellValue(__int64 rowIndex, const wstring& columnName);                   
 
    BOOL deleteRow(__int64 rowIndex); 
 
public: // Overridables
 
    void onPaint(Graphics *g) override;
    void onWindowResized() override;
 
    void onArrowUp(BOOL shiftPressed, BOOL ctrlPressed) override;
    void onArrowDown(BOOL shiftPressed, BOOL ctrlPressed) override;
    void onPageUp(BOOL shiftPressed, BOOL ctrlPressed) override;
    void onPageDown(BOOL shiftPressed, BOOL ctrlPressed) override;
    void onKeyHome(BOOL shiftPressed, BOOL ctrlPressed) override;
    void onKeyEnd(BOOL shiftPressed, BOOL ctrlPressed) override;
    void onKeyTab(BOOL shiftPressed, BOOL ctrlPressed) override;
 
    void onMousePressed(WinHandle hWnd, int x, int y, int clickCount, BOOL shiftPressed, BOOL ctrlPressed) override;
    void onMouseReleased(WinHandle hWnd, int x, int y, BOOL shiftPressed, BOOL ctrlPressed);
    void onMouseMoved(WinHandle hWnd, int x, int y, BOOL shiftPressed, BOOL ctrlPressed);
    BOOL onMouseWheel(WinHandle hWnd, int x, int y, int delta) override;
 
    void onFocusGained() override;
    void onFocusLost() override;
 
    void addSelectionChangedListener(SelectionChangeListener* l);
    void addItemDoubleClickedListener(RowDoubleClickListener* l);
    
    void addGridChangeListener(GridChangeListener* l);
 
public:
 
    void scrollBarActivity(__int64 firstVisibleItem);
    void scrollBarRepaint();
};