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

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Here is the source code for com.kdmanalytics.toif.ui.common.preferences.TrustEditingSupport.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.EditingSupport;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TextCellEditor;

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

/**
 * Editing support for the Adaptor "trust" columns.
 * 
 * Editor help here:
 *   o http://www.vogella.com/tutorials/EclipseJFaceTableAdvanced/article.html
 * 
 * @author Ken Duck
 *
 */
public class TrustEditingSupport extends EditingSupport {

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

    /**
     * Column this editor is being configured for
     */
    private int index;

    public TrustEditingSupport(TableViewer viewer, AdaptorConfiguration config, int index) {
        super(viewer);
        this.viewer = viewer;
        this.config = config;
        this.editor = new TextCellEditor(viewer.getTable());
        this.index = index;
    }

    /*
     * (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;
        TrustField state = (TrustField) row.get(index);
        return state.isValid();
    }

    /*
     * (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;
        TrustField state = (TrustField) row.get(index);
        return state.toString();
    }

    /*
     * (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;
        String text = (String) value;
        row.set(index, TrustField.fromString(text));
        config.update(row);
        viewer.update(element, null);
    }

}