de.quamoco.qm.incubator.GenericTableViewer.java Source code

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Here is the source code for de.quamoco.qm.incubator.GenericTableViewer.java

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/*-------------------------------------------------------------------------+
|                                                                          |
| Copyright 2012 Technische Universitaet Muenchen and                      |
| Fraunhofer-Institut fuer Experimentelles Software Engineering (IESE)     |
|                                                                          |
| Licensed 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 de.quamoco.qm.incubator;

import java.util.List;

import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.TableColumn;

public class GenericTableViewer<I, R, C, E> extends TableViewer {

    private List<C> columns;

    private IGenericTableContentProvider<I, R, C, E> contentProvider;

    private IGenericTableLabelProvider<R, C, E> labelProvider;

    public GenericTableViewer(Composite parent, int style) {
        super(parent, style);

        getTable().setHeaderVisible(true);
    }

    public void setGenericContentProvider(IGenericTableContentProvider<I, R, C, E> contentProvider) {
        this.contentProvider = contentProvider;
        setContentProvider(new IStructuredContentProvider() {

            public Object[] getElements(Object inputElement) {
                return GenericTableViewer.this.contentProvider.getRows((I) inputElement).toArray();
            }

            public void dispose() {

            }

            public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
                if (newInput != oldInput) {
                    updateColumns((I) newInput);
                }
            }

        });
    }

    public void setGenericLabelProvider(final IGenericTableLabelProvider<R, C, E> labelProvider) {
        this.labelProvider = labelProvider;
        setLabelProvider(new ITableLabelProvider() {

            public Image getColumnImage(Object object, int columnIndex) {
                R row = (R) object;
                if (columnIndex == 0) {
                    return labelProvider.getRowImage(row);
                }
                E element = contentProvider.getElement(row, columns.get(columnIndex - 1));
                return GenericTableViewer.this.labelProvider.getElementImage(element);
            }

            public String getColumnText(Object object, int columnIndex) {
                R row = (R) object;
                if (columnIndex == 0) {
                    return labelProvider.getRowText(row);
                }
                E element = contentProvider.getElement(row, columns.get(columnIndex - 1));
                return GenericTableViewer.this.labelProvider.getElementText(element);
            }

            public void addListener(ILabelProviderListener listener) {

            }

            public void dispose() {

            }

            public boolean isLabelProperty(Object element, String property) {
                return false;
            }

            public void removeListener(ILabelProviderListener listener) {

            }

        });
    }

    protected void updateColumns(I input) {
        removeColumns();
        addFirstColumn();
        addColumns(input);
    }

    private void removeColumns() {
        for (TableColumn tableColumn : getTable().getColumns()) {
            tableColumn.dispose();
        }
    }

    private void addFirstColumn() {
        TableColumn tableColumn = new TableColumn(getTable(), SWT.None);
        tableColumn.setWidth(200);
    }

    private void addColumns(I input) {
        columns = contentProvider.getColumns(input);
        for (C column : columns) {
            TableColumn tableColumn = new TableColumn(getTable(), SWT.None);
            tableColumn.setWidth(50);
            tableColumn.setText(labelProvider.getColumnText(column));
            tableColumn.setToolTipText(labelProvider.getColumnText(column));
        }
    }
}