org.locationtech.udig.catalog.service.database.TableBasedExtraParamsControl.java Source code

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Here is the source code for org.locationtech.udig.catalog.service.database.TableBasedExtraParamsControl.java

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/*
 *    uDig - User Friendly Desktop Internet GIS client
 *    http://udig.refractions.net
 *    (C) 2012, Refractions Research Inc.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * (http://www.eclipse.org/legal/epl-v10.html), and the Refractions BSD
 * License v1.0 (http://udig.refractions.net/files/bsd3-v10.html).
 */
package org.locationtech.udig.catalog.service.database;

import java.io.Serializable;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.ColumnLabelProvider;
import org.eclipse.jface.viewers.EditingSupport;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;

public class TableBasedExtraParamsControl implements ExtraParamsControl {

    private List<ExtraParams> paramsDefinition;

    public TableBasedExtraParamsControl(List<ExtraParams> paramsDefinition) {
        this.paramsDefinition = paramsDefinition;
    }

    public Control createControl(Composite parent) {
        TableViewer viewer = new TableViewer(parent,
                SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.FULL_SELECTION | SWT.BORDER);

        createColumns(parent, viewer);
        final Table table = viewer.getTable();
        table.setHeaderVisible(false);
        table.setLinesVisible(true);

        viewer.setContentProvider(new ArrayContentProvider());
        viewer.setInput(paramsDefinition);

        return viewer.getControl();
    }

    private void createColumns(Composite parent, final TableViewer viewer) {
        TableViewerColumn col = createTableViewerColumn(viewer, "c1", 200);
        col.setLabelProvider(new ColumnLabelProvider() {
            @Override
            public String getText(Object element) {
                ExtraParams p = (ExtraParams) element;
                return p.name;
            }
        });

        col = createTableViewerColumn(viewer, "c2", 300);
        col.setEditingSupport(new ParamEditingSupport(viewer));
        col.setLabelProvider(new ColumnLabelProvider() {
            @Override
            public String getText(Object element) {
                ExtraParams p = (ExtraParams) element;
                if (p.getCellEditor() == null) {
                    p.setCellEditor(p.createCellEditor(viewer.getTable()));
                }
                return p.getValue();
            }
        });
    }

    private TableViewerColumn createTableViewerColumn(TableViewer viewer, String title, int bound) {
        final TableViewerColumn viewerColumn = new TableViewerColumn(viewer, SWT.NONE);
        final TableColumn column = viewerColumn.getColumn();
        column.setText(title);
        column.setWidth(bound);
        column.setResizable(true);
        column.setMoveable(true);
        return viewerColumn;

    }

    public Map<String, Serializable> getParams() {
        Map<String, Serializable> params = new HashMap<String, Serializable>();

        for (ExtraParams def : paramsDefinition) {
            CellEditor cellEditor = def.getCellEditor();
            if (cellEditor != null && cellEditor.getValue() != null) {
                params.put(def.param.key, def.convertValue(cellEditor.getValue()));
            }
        }
        return params;
    }

    class ParamEditingSupport extends EditingSupport {

        private TableViewer viewer;

        public ParamEditingSupport(TableViewer viewer) {
            super(viewer);
            this.viewer = viewer;
        }

        @Override
        protected CellEditor getCellEditor(Object element) {
            ExtraParams extraParams = (ExtraParams) element;
            CellEditor cellEditor = extraParams.getCellEditor();
            return cellEditor;
        }

        @Override
        protected boolean canEdit(Object element) {
            return true;
        }

        @Override
        protected Object getValue(Object element) {
            ExtraParams def = (ExtraParams) element;
            return def.getCellEditor().getValue();
        }

        @Override
        protected void setValue(Object element, Object value) {
            ExtraParams def = (ExtraParams) element;
            viewer.refresh(element, true);
            def.getCellEditor().setValue(value);
        }
    }
}