com.google.eclipse.mechanic.plugin.ui.TaskSelectionDialog.java Source code

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Here is the source code for com.google.eclipse.mechanic.plugin.ui.TaskSelectionDialog.java

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/*******************************************************************************
 * Copyright (C) 2007, Google Inc.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *******************************************************************************/

package com.google.eclipse.mechanic.plugin.ui;

import com.google.eclipse.mechanic.Task;

import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.CellLabelProvider;
import org.eclipse.jface.viewers.ColumnViewerToolTipSupport;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.ViewerCell;
import org.eclipse.jface.window.ToolTip;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.ui.dialogs.ListDialog;

import java.util.Collection;

/**
 * Allows the user to pick a single Task from a list of Tasks.
 * 
 * TODO(smckay): We should pretty this up to use a view similar to the
 * MechanicDialog.
 */
public final class TaskSelectionDialog extends ListDialog {

    public TaskSelectionDialog(Shell parent, String title, Collection<Task> items) {
        super(parent);
        setInput(items);
        setContentProvider(ArrayContentProvider.getInstance());
        setLabelProvider(new DefaultLabelProvider());
        setWidthInChars(80);
        setTitle(title);
    }

    @Override
    protected int getTableStyle() {
        return SWT.BORDER | SWT.SINGLE | SWT.FULL_SELECTION;
    }

    private TableColumn newTableColumn(Table table, String name, int width) {
        TableColumn tc = new TableColumn(table, SWT.NONE, 0);
        tc.setResizable(true);
        tc.setText(name);
        tc.setWidth(width);
        return tc;
    }

    @Override
    protected Control createDialogArea(Composite container) {
        Control area = super.createDialogArea(container);
        TableViewer tableViewer = getTableViewer();
        Table table = tableViewer.getTable();
        tableViewer.setLabelProvider(new DefaultCellLabelProvider());
        ColumnViewerToolTipSupport.enableFor(tableViewer, ToolTip.NO_RECREATE);
        table.setHeaderVisible(true);
        newTableColumn(table, "Description", 200);
        newTableColumn(table, "ID", 200);
        newTableColumn(table, "Name", 200);
        tableViewer.refresh();
        return area;
    }

    private static class DefaultCellLabelProvider extends CellLabelProvider {
        @Override
        public void update(ViewerCell cell) {
            Object element = cell.getElement();
            int columnIndex = cell.getColumnIndex();
            cell.setText(getColumnText((Task) element, columnIndex));
        }

        @Override
        public String getToolTipText(Object element) {
            Task item = (Task) element;
            return item.getTitle() + "\n" + item.getDescription() + "\n\nID:" + item.getId();
        }

        public String getColumnText(Task item, int columnIndex) {
            switch (columnIndex) {
            case 0:
                return item.getTitle();
            case 1:
                return item.getId();
            case 2:
                return item.getDescription();
            default:
                return "" + columnIndex;
            }
        }
    }

    /**
     * Serializes Tasks for use in user facing dialogs.
     */
    private static class DefaultLabelProvider extends LabelProvider implements ITableLabelProvider {

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

        public Image getColumnImage(Object element, int columnIndex) {
            return null;
        }

        public String getColumnText(Object element, int columnIndex) {
            Task item = ((Task) element);
            switch (columnIndex) {
            case 0:
                return item.getTitle();
            case 1:
                return item.getId();
            case 2:
                return item.getDescription();
            default:
                return "" + columnIndex;
            }
        }
    }
}