org.eclipse.eclemma.internal.ui.dialogs.MergeSessionsDialog.java Source code

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Here is the source code for org.eclipse.eclemma.internal.ui.dialogs.MergeSessionsDialog.java

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/*******************************************************************************
 * Copyright (c) 2006, 2016 Mountainminds GmbH & Co. KG and Contributors
 * 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
 *
 * Contributors:
 *    Marc R. Hoffmann - initial API and implementation
 *
 ******************************************************************************/
package org.eclipse.eclemma.internal.ui.dialogs;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.CheckStateChangedEvent;
import org.eclipse.jface.viewers.ICheckStateListener;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.dialogs.ListSelectionDialog;
import org.eclipse.ui.model.WorkbenchLabelProvider;

import org.eclipse.eclemma.core.ICoverageSession;
import org.eclipse.eclemma.internal.ui.ContextHelp;
import org.eclipse.eclemma.internal.ui.UIMessages;

/**
 * Dialog to select session to merge and enter a description for the result.
 */
public class MergeSessionsDialog extends ListSelectionDialog {

    private String description;

    private Text textdescr;

    /**
     * Creates a new dialog with the given session list and description preset.
     *
     * @param parent
     *          parent shell
     * @param sessions
     *          List of session the user can select from
     * @param description
     *          Preset value for the description
     */
    public MergeSessionsDialog(Shell parent, List<ICoverageSession> sessions, String description) {
        super(parent, sessions, new ArrayContentProvider(), new WorkbenchLabelProvider(),
                UIMessages.MergeSessionsDialogSelection_label);
        setTitle(UIMessages.MergeSessionsDialog_title);
        setInitialSelections(sessions.toArray());
        this.description = description;
    }

    /**
     * Returns the session description entered by the user.
     *
     * @return session description
     */
    public String getDescription() {
        return description;
    }

    /**
     * Returns the selected sessions to merge.
     *
     * @return selected sessions
     */
    public Collection<ICoverageSession> getSessions() {
        final Collection<ICoverageSession> sessions = new ArrayList<ICoverageSession>();
        for (Object s : getResult()) {
            sessions.add((ICoverageSession) s);
        }
        return sessions;
    }

    @Override
    protected void configureShell(Shell shell) {
        super.configureShell(shell);
        ContextHelp.setHelp(shell, ContextHelp.MERGE_SESSIONS);
    }

    @Override
    protected Label createMessageArea(Composite composite) {
        Label l = new Label(composite, SWT.NONE);
        l.setFont(composite.getFont());
        l.setText(UIMessages.MergeSessionsDialogDescription_label);

        textdescr = new Text(composite, SWT.BORDER);
        textdescr.setFont(composite.getFont());
        textdescr.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
        textdescr.setText(description);
        textdescr.addModifyListener(new ModifyListener() {
            public void modifyText(ModifyEvent e) {
                updateButtonsEnableState();
            }
        });

        return super.createMessageArea(composite);
    }

    @Override
    protected Control createDialogArea(Composite parent) {
        Control c = super.createDialogArea(parent);
        getViewer().addCheckStateListener(new ICheckStateListener() {
            public void checkStateChanged(CheckStateChangedEvent event) {
                updateButtonsEnableState();
            }
        });
        Button b1 = getButton(IDialogConstants.SELECT_ALL_ID);
        b1.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                updateButtonsEnableState();
            }
        });
        Button b2 = getButton(IDialogConstants.DESELECT_ALL_ID);
        b2.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                updateButtonsEnableState();
            }
        });
        return c;
    }

    @Override
    protected void okPressed() {
        description = textdescr.getText().trim();
        super.okPressed();
    }

    private void updateButtonsEnableState() {
        Button okButton = getOkButton();
        if (okButton != null && !okButton.isDisposed()) {
            okButton.setEnabled(
                    getViewer().getCheckedElements().length > 1 && textdescr.getText().trim().length() > 0);
        }
    }

}