Package pivot.wtk.content

Source Code of pivot.wtk.content.TableViewBooleanCellRenderer

/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to you under the Apache License,
* Version 2.0 (the "License"); you may not use this file except in
* compliance with the License.  You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package pivot.wtk.content;

import pivot.beans.BeanDictionary;
import pivot.collections.Dictionary;
import pivot.wtk.Checkbox;
import pivot.wtk.FlowPane;
import pivot.wtk.HorizontalAlignment;
import pivot.wtk.TableView;
import pivot.wtk.VerticalAlignment;

/**
* Default renderer for table view cells that contain boolean data. Renders
* cell contents as a checkbox.
*
* @author gbrown
*/
public class TableViewBooleanCellRenderer extends FlowPane
    implements TableView.CellRenderer {
    private Checkbox checkbox = new Checkbox();

    public TableViewBooleanCellRenderer() {
        super();

        add(checkbox);

        getStyles().put("verticalAlignment", VerticalAlignment.CENTER);
        getStyles().put("horizontalAlignment", HorizontalAlignment.CENTER);
    }

    @Override
    public void setSize(int width, int height) {
        super.setSize(width, height);

        // Since this component doesn't have a parent, it won't be validated
        // via layout; ensure that it is valid here
        validate();
    }

    @SuppressWarnings("unchecked")
    public void render(Object value, TableView tableView, TableView.Column column,
        boolean rowSelected, boolean rowHighlighted, boolean rowDisabled) {
        if (value != null) {
            boolean checkboxSelected = false;

            // Get the row and cell data
            String columnName = column.getName();
            if (columnName != null) {
                Dictionary<String, Object> rowData;
                if (value instanceof Dictionary<?, ?>) {
                    rowData = (Dictionary<String, Object>)value;
                } else {
                    rowData = new BeanDictionary(value);
                }

                Object cellData = rowData.get(columnName);

                if (cellData instanceof String) {
                    cellData = Boolean.parseBoolean((String)cellData);
                }

                if (cellData instanceof Boolean) {
                    checkboxSelected = (Boolean)cellData;
                } else {
                    System.err.println("Data for \"" + columnName + "\" is not an instance of "
                        + Boolean.class.getName());
                }
            }

            checkbox.setSelected(checkboxSelected);
            checkbox.setEnabled(tableView.isEnabled() && !rowDisabled);
        }
    }
}
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