我想将TableView第二列的宽度与TableView的宽度绑定。
我的自定义TableView：
public class CustomTableView<T> extends
TableView<ObservableList<Pair<String, Object>>> implements Cloneable {
private static Logger logger = Logger.getLogger(CustomTableView.class);
private double prefWidth; // optionnel
private double minWidth; // optionnel
private double maxWidth; // optionnel
private double height; // optionnel
private List<InfoColumnBean> cols; // optionnel
private ObservableList<ObservableList<Pair<String, Object>>> data; // optionnel
private boolean withContextMenu; // optionnel
private ContextMenu menu; // optionnel
private String title; // obligatoire
private int titleWidth; // optionnel
private Label placeHolder; // optionnel
@SuppressWarnings("unchecked")
public CustomTableView(CustomTableViewBuilder<T> builder) {
super();
// apparence tableau
this.prefWidth = builder.prefWidth;
this.minWidth = builder.minWidth;
this.maxWidth = builder.maxWidth;
this.height = builder.height;
this.title = builder.title;
this.titleWidth = builder.titleWidth;
this.setColumnResizePolicy(TableView.CONSTRAINED_RESIZE_POLICY);
this.getStyleClass().add("tableView");
this.setPrefWidth(prefWidth);
this.setMinWidth(minWidth);
this.setMaxWidth(maxWidth);
this.setPrefHeight(height);
this.setEditable(false);
DropShadow ds = new DropShadow();
ds.setOffsetY(3.0);
ds.setOffsetX(3.0);
ds.setColor(Color.DARKGRAY);
this.setEffect(ds);
this.withContextMenu = builder.withContextMenu;
this.menu = builder.menu;
this.placeHolder = builder.placeHolder;
if (placeHolder != null)
this.setPlaceholder(placeHolder);
// colonnes du tableau
this.cols = builder.cols;
if (cols != null) {
for (final InfoColumnBean col : cols) {
@SuppressWarnings("rawtypes")
TableColumn ws_col = null;
if (col.isColumnWithImage()) {
ws_col = new TableColumn<ObservableList<Pair<String, Object>>, Object>(
col.getName());
ws_col.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<ObservableList<Pair<String, Object>>, Object>, ObservableValue<Object>>() {
@SuppressWarnings("rawtypes")
public ObservableValue<Object> call(
TableColumn.CellDataFeatures<ObservableList<Pair<String, Object>>, Object> data) {
Object value = data.getValue().get(col.getIndex())
.getValue();
return (value instanceof ObservableValue) ? (ObservableValue) value
: new ReadOnlyObjectWrapper<>(value);
}
});
}
if (!col.isColumnWithImage()) {
ws_col = new TableColumn<ObservableList<Pair<String, Object>>, String>(
col.getName());
if (!col.isColumnWithDecimalsManagement())
ws_col.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<ObservableList<Pair<String, Object>>, String>, ObservableValue<String>>() {
public ObservableValue<String> call(
TableColumn.CellDataFeatures<ObservableList<Pair<String, Object>>, String> data) {
return new ReadOnlyObjectWrapper<>(data
.getValue().get(col.getIndex())
.getKey());
}
});
else {
ws_col.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<ObservableList<Pair<String, Object>>, String>, ObservableValue<String>>() {
public ObservableValue<String> call(
TableColumn.CellDataFeatures<ObservableList<Pair<String, Object>>, String> data) {
// gestion des décimales
NumberFormat df = DecimalFormat.getInstance();
df.setMaximumFractionDigits(2);
df.setMinimumFractionDigits(2);
df.setRoundingMode(RoundingMode.HALF_UP);
String ret = df.format(
Double.parseDouble(data.getValue()
.get(col.getIndex()).getKey()))
.replace(",", ".");
return new ReadOnlyObjectWrapper<>(ret);
}
});
}
}
if (col.getId() != null && !col.getId().equals("")) {
logger.debug("col_name, id = " + col.getName() + " "
+ col.getId());
ws_col.setId(col.getId());
}
ws_col.setPrefWidth(col.getPrefWidth());
ws_col.setMinWidth(col.getMinWidth());
ws_col.setMaxWidth(col.getMaxWidth());
ws_col.getStyleClass().add(col.getStyle());
ws_col.setResizable(col.isResizable());
ws_col.setSortable(col.isSortable());
if (col.getBindPrefWidthWithTable() > 0)
ws_col.prefWidthProperty().bind(
this.widthProperty().subtract(
col.getBindPrefWidthWithTable()));
this.getColumns().add(ws_col);
}
logger.debug("cols size = " + this.getColumns().size());
// données
this.data = builder.data;
if (data != null) {
// style lignes
refresh();
this.setItems(data);
logger.debug("data.size = " + data.size());
} else {
ObservableList<ObservableList<Pair<String, Object>>> items = FXCollections
.observableArrayList();
this.setItems(items);
}
// menu contextuel ?
final CustomTableView<T> current = this;
if (withContextMenu) {
this.addEventHandler(MouseEvent.MOUSE_CLICKED,
new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent event) {
if (event.getButton().equals(
MouseButton.SECONDARY)
&& current.getItems().size() > 0) {
menu.show(current, event.getScreenX(),
event.getScreenY());
}
}
});
}
}
}
/**
* @return titre du contrôle
*
* @since 0.0.8
*/
public String getTitle() {
return title;
}
/**
* @return longueur titre label
*
* @since 0.0.8
*/
public int getTitleWidth() {
return titleWidth;
}
/**
* refresh tableView
*
* @since 0.0.8
*/
public void refresh() {
this.setRowFactory(new Callback<TableView<ObservableList<Pair<String, Object>>>, TableRow<ObservableList<Pair<String, Object>>>>() {
@Override
public TableRow<ObservableList<Pair<String, Object>>> call(
TableView<ObservableList<Pair<String, Object>>> tableView) {
final TableRow<ObservableList<Pair<String, Object>>> row = new TableRow<ObservableList<Pair<String, Object>>>() {
protected void updateItem(
ObservableList<Pair<String, Object>> pair,
boolean empty) {
super.updateItem(pair, empty);
int idx = getIndex();
if (idx >= 0) {
if ((idx % 2) == 0)
getStyleClass().add("ligne1");
else
getStyleClass().add("ligne2");
}
}
};
return row;
}
});
}
@Override
public CustomTableView<T> clone() throws CloneNotSupportedException {
CustomTableView<T> cloneObject = new CustomTableView<T>();
cloneObject.setItems(super.getItems());
return cloneObject;
}
/**
* useful for cloning
*
* @since 0.0.8
*/
public CustomTableView() {
super();
}
/**
*
* Classe : CustomTableViewBuilder
*
* paramètres contrôle
*
* @author fmaupin
*
* @since 0.0.8
*
*/
public static class CustomTableViewBuilder<T> {
private double prefWidth = 200; // optionnel
private double minWidth = 200; // optionnel
private double maxWidth = 200; // optionnel
private double height = 200; // optionnel
private List<InfoColumnBean> cols = null; // optionnel
private ObservableList<ObservableList<Pair<String, Object>>> data = null; // optionnel
private boolean withContextMenu = false; // optionnel
private ContextMenu menu = null; // optionnel
private String title = ""; // obligatoire
private int titleWidth = 0; // optionnel
private Label placeHolder = null; // optionnel
/**
* @param title
* : titre label contrôle
*
* @since 0.0.8
*/
public CustomTableViewBuilder(String title) {
this.title = title;
}
/**
*
* longueur titre contrôle
*
* @param width
* : longueur titre
*
* @since 0.0.8
*/
public CustomTableViewBuilder<T> titleWidth(int width) {
this.titleWidth = width;
return this;
}
/**
*
* placeholder
*
* @param value
* : message pour placeholder
*
* @since 0.0.8
*/
public CustomTableViewBuilder<T> setPlaceHolder(String value) {
this.placeHolder = new Label(value);
return this;
}
/**
*
* largeurs tableau
*
* @param width
* : toutes largeurs tableau
*
* @since 0.0.8
*/
public CustomTableViewBuilder<T> with(double width) {
this.prefWidth = width;
this.minWidth = width;
this.maxWidth = width;
return this;
}
/**
*
* largeur tableau
*
* @param width
* : largeur tableau
*
* @since 0.0.8
*/
public CustomTableViewBuilder<T> prefWith(double width) {
this.prefWidth = width;
return this;
}
/**
*
* largeur minimale tableau
*
* @param width
* : largeur tableau
*
* @since 0.0.8
*/
public CustomTableViewBuilder<T> minWith(double width) {
this.minWidth = width;
return this;
}
/**
*
* largeur maximale tableau
*
* @param width
* : largeur tableau
*
* @since 0.0.8
*/
public CustomTableViewBuilder<T> maxWith(double width) {
this.maxWidth = width;
return this;
}
/**
*
* hauteur tableau
*
* @param height
* : hauteur tableau
*
* @since 0.0.8
*/
public CustomTableViewBuilder<T> height(double height) {
this.height = height;
return this;
}
/**
*
* ajouter colonne(s) dans tableau
*
* @param infoColumns
* : informations sur colonnes (nom, index, largeur, largeur
* minimum, largeur maximum, style)
*
* @since 0.0.8
*/
public CustomTableViewBuilder<T> addColumns(
List<InfoColumnBean> infoColumns) {
this.cols = infoColumns;
return this;
}
/**
*
* ajouter données dans tableau
*
* @param data
* : données à ajouter
*
* @since 0.0.8
*/
public CustomTableViewBuilder<T> addDATA(
ObservableList<ObservableList<Pair<String, Object>>> data) {
this.data = data;
return this;
}
/**
*
* avec menu contextuel ?
*
* @param menu
* : descriptif menu contextuel
*
* @since 0.0.8
*/
public CustomTableViewBuilder<T> withContextMenu(ContextMenu menu) {
this.withContextMenu = true;
this.menu = menu;
return this;
}
/**
* construire contrôle
*
* @since 0.0.8
*/
public CustomTableView<T> build() {
return new CustomTableView<T>(this);
}
}
}
我的自定义TableView的初始化（InfoColumns包含列的描述）：
mytable = new CustomTableView.CustomTableViewBuilder<ObservableList<Pair<String, Object>>>(
"")
.setPlaceHolder(
"my message !")
.addColumns(infoColumns).prefWith(width * 0.4f)
.minWith(TABLEVIEW_WIDTH).maxWith(width).height(height * 0.75)
.build();
我的约束力：
mytable.getColumns().get(1).prefWidthProperty().bind(mytable.widthProperty().subtract(385));
不幸的是它不起作用！
如果你有想法......
提前谢谢你
和Fabrice
答案 0 :(得分：0)
确实有效，请按照以下示例进行操作：
import javafx.application.Application;
import javafx.beans.property.ReadOnlyObjectWrapper;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;
public class TableViewColumnBind extends Application {
@Override
public void start(Stage stage) throws Exception {
BorderPane borderPane = new BorderPane();
Scene scene = new Scene(borderPane, 500, 500);
String cssFile = getClass().getResource("tableviewgridline.css").toExternalForm();
scene.getStylesheets().add(cssFile);
stage.setScene(scene);
TableView<Integer> table = new TableView<>();
ObservableList<Integer> data = FXCollections.observableArrayList();
for (int i = 0; i < 20; i++) {
data.add(i);
}
table.setItems(data);
for (int i = 0; i < 10; i++) {
TableColumn<Integer,String> column = new TableColumn<>(Integer.toString(i));
column.setCellValueFactory(param -> new ReadOnlyObjectWrapper<>(param.getValue().toString()));
table.getColumns().add(column);
}
table.getColumns().get(1).prefWidthProperty().bind(table.widthProperty().subtract(400));
borderPane.setCenter(table);
stage.show();
}
public static void main(String[] args) {
Application.launch(args);
}
}