Question

我创建了一个TreeView，并将项目设置为ObservableList<ColumnLine>。我向EditingCell添加了一个监听器，当我按下TAB时，我可以编辑下一列或下一行的第一列（并将新项添加到项目列表中）。

我不知道为什么它会返回一个大于项目的索引。大小有时。实际上有一个列的单元格值是一个按钮，当我按TAB（编辑下一列）时它将显示在较大的行上，然后再次按TAB它将显示回正确的行。

错误：

当我按下TAB时，它会返回一个大于项目的行索引。大小

调用startEdit（）时打印内容：

public void startEdit() {
    super.startEdit();
    if (textField == null) createTextField();
    textField.setText(getString());
    setGraphic(textField);
    setContentDisplay(ContentDisplay.GRAPHIC_ONLY);
    Platform.runLater(
        () -> {
          textField.requestFocus();
          textField.selectAll();
          System.out.println(
              "start: "
                  //+ getTableColumn().getText()
                  + " row-"
                  + getIndex()
                  + " column-"
                  + getTableView().getColumns().indexOf(getTableColumn())
                  + " item count-"
                  + getTableView().getItems().size());
          System.out.println("item-size: " + getTableView().getItems().size());
        });
  }

输出：

                                            -- First Line: normal
start:  row-0 column-1 item count-1
item-size: 1
commit:  row-0 column-1 item count-1
start:  row-0 column-2 item count-1
item-size: 1
commit:  row-0 column-2 item count-1
size: 2
                                            -- Second Line: wrong
start:  row-23 column-1 item count-2      <------ This
item-size: 2
start:  row-1 column-1 item count-2
item-size: 2
commit:  row-1 column-1 item count-2
start:  row-1 column-2 item count-2
item-size: 2
commit:  row-1 column-2 item count-2
database next: row-1 col-名
size: 3
                                            -- Third Line: wrong
start:  row-22 column-1 item count-3      <------ This
item-size: 3
start:  row-2 column-1 item count-3
item-size: 3
commit:  row-2 column-1 item count-3
start:  row-2 column-2 item count-3
item-size: 3
commit:  row-2 column-2 item count-3
database next: row-2 col-名
size: 4
                                            -- Fourth Line: wrong
start:  row-3 column-1 item count-4
item-size: 4
commit:  row-21 column-1 item count-4      <------ This
start:  row-3 column-1 item count-4
item-size: 4
commit:  row-3 column-1 item count-4
start:  row-3 column-2 item count-4
item-size: 4
commit:  row-3 column-2 item count-4

代码：

创建一个TableView：

    view.getColumns().add(new ColumnBuilder<ColumnLine>().createStringColumn("名", "name"));
    view.getColumns().add(new ColumnBuilder<ColumnLine>().createStringColumn("类型", "type"));
    view.getColumns().add(new ColumnBuilder<ColumnLine>().createStringColumn("长度", "length"));
    view.getColumns().add(new ColumnBuilder<ColumnLine>().createStringColumn("小数点", "decimal"));

    TableColumn<ColumnLine, Boolean> colNotNull = new TableColumn<>("不是 null");
    colNotNull.setCellFactory(param -> new CheckBoxTableCell<>());
    colNotNull.setCellValueFactory(
        param -> {
          ColumnLine value = param.getValue();
          BooleanProperty property = new SimpleBooleanProperty(value.isNotNull());
          property.addListener((observable, oldValue, newValue) -> value.setNotNull(newValue));

          return property;
        });
    view.getColumns().add(colNotNull);

    TableColumn<ColumnLine, Boolean> key = new TableColumn<>("键");
    key.getStyleClass().add("imageValueColumn");
    key.setCellFactory(
        param ->
            new TableCell<ColumnLine, Boolean>() {
              private final Button btn = new Button();

              {
                btn.getStyleClass().add("imageButton");
                btn.setOnAction(
                    event -> {
                      ColumnLine value = getTableView().getItems().get(getIndex());
                      value.setPK(!value.isPK());
                      if (value.isPK()) {
                        if (btn.getGraphic() == null) {
                          btn.setGraphic(new ImageView(new Image("/resource/key.png")));
                        }
                      } else btn.setGraphic(null);
                    });
              }

              @Override
              protected void updateItem(Boolean value, boolean empty) {
                super.updateItem(value, empty);

                setGraphic(empty ? null : btn);
              }
            });
    key.setCellValueFactory(
        param -> {
          ColumnLine value = param.getValue();
          BooleanProperty property = new SimpleBooleanProperty(value.isPK());
          property.addListener((observable, oldValue, newValue) -> value.setPK(newValue));
          return property;
        });
    view.getColumns().add(key);
  }

编辑单元格的键侦听器（getNextColumn（boolean）将返回下一个单元格）：

if (event.getCode() == KeyCode.TAB) {

    // Get next cell
    TableColumn nextColumn = getNextColumn(true);

    if (nextColumn != null) {
        // Not the last column
        if (nextColumn != getTableView().getColumns().get(1)) {
            getTableView().edit(getTableRow().getIndex(), nextColumn);
        } else { // the last column
            // Not the last line
            if (getTableRow().getIndex() < getTableView().getItems().size() - 1) {
                // Edit next column
                getTableView().edit(getTableRow().getIndex() + 1, nextColumn);
            } else { // The last line
                // Add a new item
                ((TableCreator) obj).getNewColumns().add(new ColumnLine());

                // Edit
                getTableView().edit(getTableRow().getIndex() + 1, nextColumn);
            }
        }
    }
}

}

我不是说英语的人...如果这篇文章中有什么不对，我向你道歉。

getTableRow（）返回一个大于项目＆＃39;的索引。尺寸

错误：

代码：

0 个答案: