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package javafx.scene.control.cell;

import javafx.beans.property.ObjectProperty;
import javafx.beans.property.SimpleObjectProperty;
import javafx.scene.control.TextField;
import javafx.scene.control.TreeTableCell;
import javafx.scene.control.TreeTableColumn;
import javafx.util.Callback;
import javafx.util.StringConverter;
import javafx.util.converter.DefaultStringConverter;

A class containing a TableCell implementation that draws a TextField node inside the cell. 
By default, the TextFieldTableCell is rendered as a Label when not being edited, and as a TextField when in editing mode. The TextField will, by default, stretch to fill the entire table cell. 
Type parameters:
<S> – The type of the TreeTableView generic type
<T> – The type of the elements contained within the TreeTableColumn.
Since:
JavaFX 8.0/**
 * A class containing a {@link javafx.scene.control.TableCell} implementation that draws a
 * {@link TextField} node inside the cell.
 *
 * <p>By default, the TextFieldTableCell is rendered as a {@link javafx.scene.control.Label} when not
 * being edited, and as a TextField when in editing mode. The TextField will, by
 * default, stretch to fill the entire table cell.
 *
 * @param <S> The type of the TreeTableView generic type
 * @param <T> The type of the elements contained within the TreeTableColumn.
 * @since JavaFX 8.0
 */
public class TextFieldTreeTableCell<S,T> extends TreeTableCell<S,T> {

    /***************************************************************************
     *                                                                         *
     * Static cell factories                                                   *
     *                                                                         *
     **************************************************************************/

    
Provides a TextField that allows editing of the cell content when the cell is double-clicked, or when TreeTableView.edit(int, TreeTableColumn) is called. This method will only work on TreeTableColumn instances which are of type String. 
Type parameters:
<S> – The type of the TreeTableView generic type
Returns:
A Callback that can be inserted into the cell factory property of a TreeTableColumn, that enables textual editing of the content./**
     * Provides a {@link TextField} that allows editing of the cell content when
     * the cell is double-clicked, or when
     * {@link javafx.scene.control.TreeTableView#edit(int, javafx.scene.control.TreeTableColumn)} is called.
     * This method will only  work on {@link TreeTableColumn} instances which are of
     * type String.
     *
     * @param <S> The type of the TreeTableView generic type
     * @return A {@link Callback} that can be inserted into the
     *      {@link TreeTableColumn#cellFactoryProperty() cell factory property} of a
     *      TreeTableColumn, that enables textual editing of the content.
     */
    public static <S> Callback<TreeTableColumn<S,String>, TreeTableCell<S,String>> forTreeTableColumn() {
        return forTreeTableColumn(new DefaultStringConverter());
    }

    
Provides a TextField that allows editing of the cell content when the cell is double-clicked, or when TreeTableView.edit(int, TreeTableColumn) is called. This method will work on any TreeTableColumn instance, regardless of its generic type. However, to enable this, a StringConverter must be provided that will convert the given String (from what the user typed in) into an instance of type T. This item will then be passed along to the TreeTableColumn.onEditCommitProperty() callback. 
Params:
converter – A StringConverter that can convert the given String (from what the user typed in) into an instance of type T.
Type parameters:
<S> – The type of the TreeTableView generic type
<T> – The type of the elements contained within the TreeTableColumn
Returns:
A Callback that can be inserted into the cell factory property of a TreeTableColumn, that enables textual editing of the content./**
     * Provides a {@link TextField} that allows editing of the cell content when
     * the cell is double-clicked, or when
     * {@link javafx.scene.control.TreeTableView#edit(int, javafx.scene.control.TreeTableColumn) } is called.
     * This method will work  on any {@link TreeTableColumn} instance, regardless of
     * its generic type. However, to enable this, a {@link StringConverter} must
     * be provided that will convert the given String (from what the user typed
     * in) into an instance of type T. This item will then be passed along to the
     * {@link TreeTableColumn#onEditCommitProperty()} callback.
     *
     * @param <S> The type of the TreeTableView generic type
     * @param <T> The type of the elements contained within the TreeTableColumn
     * @param converter A {@link StringConverter} that can convert the given String
     *      (from what the user typed in) into an instance of type T.
     * @return A {@link Callback} that can be inserted into the
     *      {@link TreeTableColumn#cellFactoryProperty() cell factory property} of a
     *      TreeTableColumn, that enables textual editing of the content.
     */
    public static <S,T> Callback<TreeTableColumn<S,T>, TreeTableCell<S,T>> forTreeTableColumn(
            final StringConverter<T> converter) {
        return list -> new TextFieldTreeTableCell<S,T>(converter);
    }


    
                                                                        *
Fields                                                                  *
                                                                        *
/***************************************************************************
     *                                                                         *
     * Fields                                                                  *
     *                                                                         *
     **************************************************************************/

    private TextField textField;



    /***************************************************************************
     *                                                                         *
     * Constructors                                                            *
     *                                                                         *
     **************************************************************************/

    
Creates a default TextFieldTreeTableCell with a null converter. Without a StringConverter specified, this cell will not be able to accept input from the TextField (as it will not know how to convert this back to the domain object). It is therefore strongly encouraged to not use this constructor unless you intend to set the converter separately. /**
     * Creates a default TextFieldTreeTableCell with a null converter. Without a
     * {@link StringConverter} specified, this cell will not be able to accept
     * input from the TextField (as it will not know how to convert this back
     * to the domain object). It is therefore strongly encouraged to not use
     * this constructor unless you intend to set the converter separately.
     */
    public TextFieldTreeTableCell() {
        this(null);
    }

    
Creates a TextFieldTreeTableCell that provides a TextField when put into editing mode that allows editing of the cell content. This method will work on any TreeTableColumn instance, regardless of its generic type. However, to enable this, a StringConverter must be provided that will convert the given String (from what the user typed in) into an instance of type T. This item will then be passed along to the TreeTableColumn.onEditCommitProperty() callback. 
Params:
converter – A converter that can convert the given String (from what the user typed in) into an instance of type T./**
     * Creates a TextFieldTreeTableCell that provides a {@link TextField} when put
     * into editing mode that allows editing of the cell content. This method
     * will work on any TreeTableColumn instance, regardless of its generic type.
     * However, to enable this, a {@link StringConverter} must be provided that
     * will convert the given String (from what the user typed in) into an
     * instance of type T. This item will then be passed along to the
     * {@link TreeTableColumn#onEditCommitProperty()} callback.
     *
     * @param converter A {@link StringConverter converter} that can convert
     *      the given String (from what the user typed in) into an instance of
     *      type T.
     */
    public TextFieldTreeTableCell(StringConverter<T> converter) {
        this.getStyleClass().add("text-field-tree-table-cell");
        setConverter(converter);
    }



    
                                                                        *
Properties                                                              *
                                                                        *
/***************************************************************************
     *                                                                         *
     * Properties                                                              *
     *                                                                         *
     **************************************************************************/

    // --- converter
    private ObjectProperty<StringConverter<T>> converter =
            new SimpleObjectProperty<StringConverter<T>>(this, "converter");

    
The StringConverter property. 
Returns:
the StringConverter property/**
     * The {@link StringConverter} property.
     * @return the {@link StringConverter} property
     */
    public final ObjectProperty<StringConverter<T>> converterProperty() {
        return converter;
    }

    
Sets the StringConverter to be used in this cell. 
Params:
value – the StringConverter to be used in this cell/**
     * Sets the {@link StringConverter} to be used in this cell.
     * @param value the {@link StringConverter} to be used in this cell
     */
    public final void setConverter(StringConverter<T> value) {
        converterProperty().set(value);
    }

    
Returns the StringConverter used in this cell. 
Returns:
the StringConverter used in this cell/**
     * Returns the {@link StringConverter} used in this cell.
     * @return the {@link StringConverter} used in this cell
     */
    public final StringConverter<T> getConverter() {
        return converterProperty().get();
    }



    /***************************************************************************
     *                                                                         *
     * Public API                                                              *
     *                                                                         *
     **************************************************************************/

    
{@inheritDoc} /** {@inheritDoc} */
    @Override public void startEdit() {
        if (! isEditable()
                || ! getTreeTableView().isEditable()
                || ! getTableColumn().isEditable()) {
            return;
        }
        super.startEdit();

        if (isEditing()) {
            if (textField == null) {
                textField = CellUtils.createTextField(this, getConverter());
            }

            CellUtils.startEdit(this, getConverter(), null, null, textField);
        }
    }

    
{@inheritDoc} /** {@inheritDoc} */
    @Override public void cancelEdit() {
        super.cancelEdit();
        CellUtils.cancelEdit(this, getConverter(), null);
    }

    
{@inheritDoc} /** {@inheritDoc} */
    @Override public void updateItem(T item, boolean empty) {
        super.updateItem(item, empty);
        CellUtils.updateItem(this, getConverter(), null, null, textField);
    }
}