org.eclipse.linuxtools.internal.docker.ui.preferences.DockerPreferencePage.java Source code

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Here is the source code for org.eclipse.linuxtools.internal.docker.ui.preferences.DockerPreferencePage.java

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/*******************************************************************************
 * Copyright (c) 2014, 2016 Red Hat Inc. and others.
 * 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:
 *     Red Hat - Initial Contribution
 *******************************************************************************/
package org.eclipse.linuxtools.internal.docker.ui.preferences;

import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.jface.preference.IntegerFieldEditor;
import org.eclipse.jface.preference.PreferencePage;
import org.eclipse.jface.preference.PreferenceStore;
import org.eclipse.jface.preference.StringFieldEditor;
import org.eclipse.linuxtools.docker.ui.Activator;
import org.eclipse.linuxtools.internal.docker.core.DockerContainerRefreshManager;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;

public class DockerPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {

    private static final String REFRESH_TIME_MSG = "RefreshTime.label"; //$NON-NLS-1$

    private static final String INVALID_REFRESH_TIME_MSG = "RefreshTime.invalid.label"; //$NON-NLS-1$

    private IntegerFieldEditor refreshTimeField;

    public DockerPreferencePage() {
        super();
        setPreferenceStore(Activator.getDefault().getPreferenceStore());
    }

    @Override
    public void init(final IWorkbench workbench) {
    }

    /**
     * Saves the current values in the {@link PreferenceStore}.
     */
    private void savePreferences() {
        if (this.refreshTimeField != null) {
            this.refreshTimeField.store();
        }
    }

    @Override
    public boolean performOk() {
        savePreferences();
        return true;
    }

    @Override
    protected void performApply() {
        savePreferences();
        super.performApply();
    }

    @Override
    protected Control createContents(final Composite parent) {
        final Composite container = new Composite(parent, SWT.NONE);
        GridLayoutFactory.fillDefaults().numColumns(1).applyTo(container);
        GridDataFactory.fillDefaults().align(SWT.FILL, SWT.FILL).applyTo(container);
        createContainerRefreshContainer(container);
        return container;
    }

    /**
     * Create a container for the refresh rate property
     * @param parent the parent container
     */
    private void createContainerRefreshContainer(Composite parent) {
        final Composite container = new Composite(parent, SWT.NONE);
        GridDataFactory.fillDefaults().align(SWT.FILL, SWT.FILL).span(1, 1).grab(true, false).applyTo(container);
        GridLayoutFactory.fillDefaults().margins(0, 0).spacing(10, 2).applyTo(container);
        refreshTimeField = new IntegerFieldEditor(PreferenceConstants.REFRESH_TIME,
                Messages.getString(REFRESH_TIME_MSG), container);
        refreshTimeField.setPreferenceStore(getPreferenceStore());
        refreshTimeField.setValidateStrategy(StringFieldEditor.VALIDATE_ON_KEY_STROKE);
        refreshTimeField.setValidRange(5, 200);
        refreshTimeField.setPage(this);
        refreshTimeField.setErrorMessage(Messages.getString(INVALID_REFRESH_TIME_MSG));
        refreshTimeField.showErrorMessage();
        refreshTimeField.load();
        // If the preference changes, alert the Refresh Manager
        refreshTimeField.setPropertyChangeListener(event -> {
            if (event.getSource().equals(refreshTimeField)) {
                if (refreshTimeField.isValid()) {
                    DockerContainerRefreshManager.getInstance().setRefreshTime(refreshTimeField.getIntValue());
                    setErrorMessage(null);
                } else {
                    setErrorMessage(refreshTimeField.getErrorMessage());
                }
                setValid(refreshTimeField.isValid());
            }
        });
    }

}