com.kdmanalytics.toif.ui.common.preferences.ShowEditingSupport.java Source code

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Here is the source code for com.kdmanalytics.toif.ui.common.preferences.ShowEditingSupport.java

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/*******************************************************************************
 * Copyright (c) 2016 KDM Analytics, Inc. All rights reserved. This program and
 * the accompanying materials are made available under the terms of the Open
 * Source Initiative OSI - Open Software License v3.0 which accompanies this
 * distribution, and is available at
 * http://www.opensource.org/licenses/osl-3.0.php/
 ******************************************************************************/

package com.kdmanalytics.toif.ui.common.preferences;

import java.util.List;

import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.CheckboxCellEditor;
import org.eclipse.jface.viewers.EditingSupport;
import org.eclipse.jface.viewers.TableViewer;

import com.kdmanalytics.toif.ui.common.AdaptorConfiguration;
import com.kdmanalytics.toif.ui.common.ShowField;

/**
 * Editing support for the show column.
 * 
 * Editor help here:
 *   o http://www.vogella.com/tutorials/EclipseJFaceTableAdvanced/article.html
 * 
 * @author Ken Duck
 *
 */
public class ShowEditingSupport extends EditingSupport {

    private final TableViewer viewer;
    private final CellEditor editor;
    private AdaptorConfiguration config;

    public ShowEditingSupport(TableViewer viewer, AdaptorConfiguration config) {
        super(viewer);
        this.viewer = viewer;
        this.config = config;
        this.editor = new CheckboxCellEditor(viewer.getTable());
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.viewers.EditingSupport#getCellEditor(java.lang.Object)
     */
    @Override
    protected CellEditor getCellEditor(Object element) {
        return editor;
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.viewers.EditingSupport#canEdit(java.lang.Object)
     */
    @Override
    protected boolean canEdit(Object element) {
        @SuppressWarnings("unchecked")
        List<Object> row = (List<Object>) element;
        ShowField state = (ShowField) row.get(config.getShowColumnIndex());
        switch (state) {
        case UNSET:
            return false;
        default:
            return true;
        }
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.viewers.EditingSupport#getValue(java.lang.Object)
     */
    @Override
    protected Object getValue(Object element) {
        @SuppressWarnings("unchecked")
        List<Object> row = (List<Object>) element;
        ShowField state = (ShowField) row.get(config.getShowColumnIndex());
        switch (state) {
        case YES:
            return true;
        case NO:
            return false;
        default:
            throw new IllegalArgumentException("Unsupported editor state: " + state);
        }
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.viewers.EditingSupport#setValue(java.lang.Object, java.lang.Object)
     */
    @Override
    protected void setValue(Object element, Object value) {
        @SuppressWarnings("unchecked")
        List<Object> row = (List<Object>) element;
        Boolean b = (Boolean) value;
        if (b) {
            row.set(config.getShowColumnIndex(), ShowField.YES);
        } else {
            row.set(config.getShowColumnIndex(), ShowField.NO);
        }
        config.update(row);
        viewer.update(element, null);
    }

}