org.eclipse.mylyn.internal.tasks.ui.commands.ShowTasksConnectorDiscoveryWizardCommandHandler.java Source code

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Here is the source code for org.eclipse.mylyn.internal.tasks.ui.commands.ShowTasksConnectorDiscoveryWizardCommandHandler.java

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/*******************************************************************************
 * Copyright (c) 2009 Tasktop Technologies.
 * 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:
 *     Tasktop Technologies - initial API and implementation
 *******************************************************************************/
package org.eclipse.mylyn.internal.tasks.ui.commands;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.wizard.WizardDialog;
import org.eclipse.mylyn.commons.workbench.WorkbenchUtil;
import org.eclipse.mylyn.internal.discovery.ui.wizards.ConnectorDiscoveryWizard;
import org.eclipse.mylyn.internal.tasks.ui.ITasksUiPreferenceConstants;
import org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;

/**
 * A command that causes the {@link ConnectorDiscoveryWizard} to appear in a dialog.
 * 
 * @author David Green
 * @author Steffen Pingel
 */
public class ShowTasksConnectorDiscoveryWizardCommandHandler extends AbstractHandler {

    private static final String ID_P2_INSTALL_UI = "org.eclipse.equinox.p2.ui.sdk/org.eclipse.equinox.p2.ui.sdk.install"; //$NON-NLS-1$

    public Object execute(ExecutionEvent event) throws ExecutionException {

        // check to make sure that the p2 install ui is enabled
        if (WorkbenchUtil.allowUseOf(ID_P2_INSTALL_UI)) {
            ConnectorDiscoveryWizard wizard = new ConnectorDiscoveryWizard();
            WizardDialog dialog = new WizardDialog(WorkbenchUtil.getShell(), wizard) {
                @Override
                protected void createButtonsForButtonBar(Composite parent) {
                    super.createButtonsForButtonBar(parent);
                    ((GridLayout) parent.getLayout()).numColumns++;
                    final Button button = new Button(parent, SWT.CHECK);
                    button.setSelection(TasksUiPlugin.getDefault().getPreferenceStore()
                            .getBoolean(ITasksUiPreferenceConstants.SERVICE_MESSAGES_ENABLED));
                    button.setText(
                            Messages.ShowTasksConnectorDiscoveryWizardCommandHandler_Notify_when_updates_are_available_Text);
                    button.setFont(JFaceResources.getDialogFont());
                    button.addSelectionListener(new SelectionAdapter() {
                        @Override
                        public void widgetSelected(SelectionEvent event) {
                            TasksUiPlugin.getDefault().getPreferenceStore().setValue(
                                    ITasksUiPreferenceConstants.SERVICE_MESSAGES_ENABLED, button.getSelection());
                        }
                    });
                    button.moveAbove(null);
                }
            };
            dialog.open();
        } else {
            MessageDialog.openWarning(WorkbenchUtil.getShell(),
                    Messages.ShowTasksConnectorDiscoveryWizardCommandHandler_Install_Connectors,
                    Messages.ShowTasksConnectorDiscoveryWizardCommandHandler_Unable_to_launch_connector_install);
        }

        return null;
    }
}