Java tutorial
/*---------------- FILE HEADER KALYPSO ------------------------------------------ * * This file is part of kalypso. * Copyright (C) 2004 by: * * Technical University Hamburg-Harburg (TUHH) * Institute of River and coastal engineering * Denickestrae 22 * 21073 Hamburg, Germany * http://www.tuhh.de/wb * * and * * Bjoernsen Consulting Engineers (BCE) * Maria Trost 3 * 56070 Koblenz, Germany * http://www.bjoernsen.de * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Contact: * * E-Mail: * belger@bjoernsen.de * schlienger@bjoernsen.de * v.doemming@tuhh.de * * ---------------------------------------------------------------------------*/ package org.kalypso.ogc.gml.map.widgets.dialogs; import org.apache.commons.lang3.StringEscapeUtils; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.jobs.IJobChangeEvent; import org.eclipse.core.runtime.jobs.IJobChangeListener; import org.eclipse.core.runtime.jobs.Job; import org.eclipse.core.runtime.jobs.JobChangeAdapter; import org.eclipse.jface.dialogs.IDialogSettings; import org.eclipse.jface.dialogs.PopupDialog; import org.eclipse.swt.SWT; import org.eclipse.swt.browser.Browser; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.progress.IProgressConstants; import org.kalypso.contribs.eclipse.jface.dialog.DialogSettingsUtils; import org.kalypso.ogc.gml.map.themes.KalypsoWMSTheme; import org.kalypso.ui.KalypsoGisPlugin; import org.kalypso.ui.internal.i18n.Messages; /** * The get feature info dialog. * * @author Holger Albert */ public class GetFeatureInfoDialog extends PopupDialog { /** * The job change listener. */ private final IJobChangeListener m_listener = new JobChangeAdapter() { @Override public void done(final IJobChangeEvent event) { handleJobDone(event); } }; /** * The WMS theme. */ private final KalypsoWMSTheme m_wmsTheme; /** * The x coordinate. */ private final double m_x; /** * The y coordinate. */ private final double m_y; /** * The browser. */ private Browser m_browser; /** * The constructor. * * @param parentShell * The parent shell. * @param wmsTheme * The WMS theme. * @param x * The x coordinate. * @param y * The y coordinate. */ public GetFeatureInfoDialog(final Shell parentShell, final KalypsoWMSTheme wmsTheme, final double x, final double y) { super(parentShell, SWT.RESIZE, true, true, true, false, false, Messages.getString("GetFeatureInfoDialog_0"), //$NON-NLS-1$ null); m_wmsTheme = wmsTheme; m_x = x; m_y = y; m_browser = null; } /** * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite) */ @Override protected Control createDialogArea(final Composite parent) { /* Create the main composite. */ final Composite main = (Composite) super.createDialogArea(parent); main.setLayout(new GridLayout(1, false)); main.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); /* Set the title text. */ setTitleText(Messages.getString("GetFeatureInfoDialog.0")); //$NON-NLS-1$ /* Create the browser. */ m_browser = new Browser(main, SWT.BORDER); m_browser.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); /* Initialize. */ initialize(); return main; } /** * @see org.eclipse.jface.dialogs.PopupDialog#getDialogSettings() */ @Override protected IDialogSettings getDialogSettings() { return DialogSettingsUtils.getDialogSettings(KalypsoGisPlugin.getDefault(), getClass().getCanonicalName()); } /** * This function initalizes the dialog. */ private void initialize() { /* If there was no WMS theme provided show only a notice. */ if (m_wmsTheme == null) { setTitleText(Messages.getString("GetFeatureInfoDialog_1")); //$NON-NLS-1$ return; } /* Create the job. */ final GetFeatureInfoJob job = new GetFeatureInfoJob(m_wmsTheme, m_x, m_y); job.setSystem(true); job.setProperty(IProgressConstants.NO_IMMEDIATE_ERROR_PROMPT_PROPERTY, true); job.setProperty(IProgressConstants.KEEP_PROPERTY, false); job.addJobChangeListener(m_listener); /* Schedule it. */ job.schedule(); } protected void handleJobDone(final IJobChangeEvent event) { if (m_browser == null || m_browser.isDisposed()) return; final Display display = m_browser.getDisplay(); display.asyncExec(new Runnable() { @Override public void run() { handleJobDoneInternal(event); } }); } protected void handleJobDoneInternal(final IJobChangeEvent event) { setTitleText(Messages.getString("GetFeatureInfoDialog.1")); //$NON-NLS-1$ /* Get the result. */ final IStatus result = event.getResult(); if (!result.isOK()) { setErrorText(result.getMessage()); return; } /* Get the job. */ final Job job = event.getJob(); if (!(job instanceof GetFeatureInfoJob)) return; /* Cast. */ final GetFeatureInfoJob task = (GetFeatureInfoJob) job; /* Get the feature info. */ final String featureInfo = task.getFeatureInfo(); if (featureInfo == null) { setErrorText(Messages.getString("GetFeatureInfoDialog.2")); //$NON-NLS-1$ return; } /* Set the response text into the browser. */ setHtmlText(featureInfo); } private void setErrorText(final String text) { if (m_browser == null || m_browser.isDisposed()) return; // TODO Make nice html... m_browser.setText(StringEscapeUtils.escapeHtml4(text)); } private void setHtmlText(final String text) { if (m_browser == null || m_browser.isDisposed()) return; m_browser.setText(text); } }