2018년 9월 9일 일요일

[JavaFx] TableView Example


1. FxTable.java
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package lib.fxapp;

import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.ObservableList;
import javafx.event.EventHandler;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.SelectionMode;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TablePosition;
import javafx.scene.control.TableView;
import javafx.scene.input.DragEvent;
import javafx.scene.input.Dragboard;
import javafx.scene.input.TransferMode;

public class FxTable {

    public class FxTableRow {
        public StringProperty[] values;
        public FxTableRow(int columns) {
            values = new StringProperty[columns];
        }
        public void setValue(int index, String value) {
            if( index < values.length ) {
                values[index].set(value);
            }
        }
        public String getValue(int index) {
            if( index < values.length ) {
                return values[index].get();
            }
            return null;
        }
    }

    public TableView<FxTableRow> table = new TableView<>();
    public int columnCount;

   /*------------------------------------------------------------
     * Common Part
     */

    public FxTable() {     
        table = new TableView<>();
        table.setColumnResizePolicy(TableView.CONSTRAINED_RESIZE_POLICY);
        columnCount = 0;
        tableSetItemHandler(null);
        tableSetIndexHandler(null);
        setDragAndDropHandler(null);
    }
    
    public TableView<FxTableRow> getTable() {
        return table;
    }

    public void clear() {
        table.getItems().clear();
    }
    
    public int size() {
        return table.getItems().size();
    }

    public void refresh() {
        table.refresh();
    }
    
    public void clearSelection() {
        table.getSelectionModel().clearSelection();
    }
    
    public void selectFirst() {
        table.getSelectionModel().selectFirst();
    }
    
    public void selectLast() {
        table.getSelectionModel().selectLast();
    }
    
    public void enableMultiSelection() {
        table.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
    }
    
    public int getSelectedIndex() {
        return table.getSelectionModel().getSelectedIndex();
    }
    
    public ObservableList<TablePosition> getSelectedCells() {
        return table.getSelectionModel().getSelectedCells(); //TODO
    }
        
    public String[] getSelectedItem() {
        FxTableRow item = table.getSelectionModel().getSelectedItem();
        String[] row = new String[item.values.length];
        for( int i = 0; i < row.length; i++ ) {
            row[i] = item.values[i].getValue();
        }
        return row;
    }

    public void add(String[] data) {
        FxTableRow row = new FxTableRow(columnCount);
        for( int i = 0; i < data.length; i++ ) {
            row.values[i] = new SimpleStringProperty(data[i]);
        }
        table.getItems().add(row);
    }

    public String get( int row, int col ) {
        if( row < table.getItems().size() ) {
            FxTableRow item = table.getItems().get(row);
            if( col < item.values.length ) {
                return item.getValue(col);
            }
        }
        return null;
    }

    public void set(int row, int col, String data) {
        if( row >= 0 && row < table.getItems().size() ) {
            table.getItems().get(row).values[col] = new SimpleStringProperty(data);
            table.refresh();
        }
    }
    
    public void columnAlign(TableColumn<FxTableRow,?> column, int pos) {
        switch(pos) {
            case -1: column.setStyle( "-fx-alignment: CENTER-LEFT;"); break;
            case  0: column.setStyle( "-fx-alignment: CENTER;"); break;
            case  1: column.setStyle( "-fx-alignment: CENTER-RIGHT;"); break;
        }
    }
        
    public void columnAlign(int col, int pos) {
        if( pos < table.getColumns().size() ) {
            columnAlign(table.getColumns().get(col), pos);
        }
    }

    /*------------------------------------------------------------
     * Custom Part
     */    
    public void addColumn(String title, int align) {
        int columnNumber = columnCount;
        TableColumn<FxTableRow,String> column = new TableColumn<>(title);
        column.setCellValueFactory(cellData -> cellData.getValue().values[columnNumber] );
        column.setSortable(true);
        columnAlign(column,align);
        table.getColumns().add(column);
        columnCount++;
    }
    
    public void addColumn(String title) {
        addColumn(title, 0);
    }

    public void addColumns(String[] titles) {
        for( int i = 0; i < titles.length; i++ ) {
            addColumn( titles[i] );
        }
    }

    public void setColumnAlign(Integer[] align) {
        for( int i = 0; i < align.length; i++ ) {
            columnAlign( i, align[i] );
        }
    }
    
    public void setColumnWidthPercent(Integer[] widths) {
        table.setColumnResizePolicy( TableView.CONSTRAINED_RESIZE_POLICY );
        for( int i = 0; i < widths.length; i++ ) {
            TableColumn<FxTableRow,?> column = table.getColumns().get(i);
            column.setMaxWidth( 1f * Integer.MAX_VALUE * widths[i] );
        }
    }
    
    public void setColumnWidthFixed(Integer[] widths) {
        table.setColumnResizePolicy( TableView.UNCONSTRAINED_RESIZE_POLICY );
        for( int i = 0; i < widths.length; i++ ) {
            TableColumn<FxTableRow,?> column = table.getColumns().get(i);
            column.setPrefWidth( widths[i] );
        }
    }
    
    public void addCell(String[] data) {
        add(data);
    }

    public void setCellValue(int row, int col, String data) {
        set( row, col, data);
    }

    public void setSelectedCellValue(int col, String data) {
        setCellValue(table.getSelectionModel().getSelectedIndex(), col, data);
    }

    public void tableSetItemHandler(FxRunnable runnable) {
        table.getSelectionModel().selectedItemProperty().addListener(new ChangeListener<FxTableRow>() {
            @Override
            public void changed(ObservableValue<? extends FxTableRow> observable, FxTableRow oldValue, FxTableRow newValue) {
                if( runnable != null ) {
                    runnable.run( (Object) new FxTableRow[] { oldValue, newValue } );
                }
            }
        });  
    }
    
    public void tableSetContextMenu(ContextMenu menu) {
        table.setContextMenu(menu);
    }
    
    public void tableSetIndexHandler(FxRunnable runnable) {
        table.getSelectionModel().selectedIndexProperty().addListener(new ChangeListener<Number>() {
            @Override
            public void changed(ObservableValue<? extends Number> observable, Number oldValue, Number newValue) {
                if( runnable != null ) {
                    runnable.run( (Object) new Number[] { oldValue, newValue } );
                }
            }
        });  
    }
    
    public void setDragAndDropHandler(FxRunnable runnable) {
        table.setOnDragDropped(new EventHandler<DragEvent>() {
            @Override
            public void handle(DragEvent event) {
                Dragboard db = event.getDragboard();
                boolean success = false;
                if( db.hasFiles() ) {
                    if( runnable != null ) {                 
                        runnable.run(db.getFiles());
                        success = true;
                    }
                }
                event.setDropCompleted(success);
                event.consume();
            }
        });
        
        table.setOnDragOver(new EventHandler<DragEvent>() {
            @Override
            public void handle(DragEvent event) {
                Dragboard db = event.getDragboard();
                if( db.hasFiles() ) {
                    event.acceptTransferModes(TransferMode.COPY_OR_MOVE);
                }
                event.consume();
            }
        });
    }

    void println(String s) {
        System.out.println(s);;
    }

}


2. FxRunnable.java
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package lib.fxapp;

public interface FxRunnable {
    public void run(Object... object);
}



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