Java tutorial
/******************************************************************************* * Copyright (c) 2008, 2009 Internettechnik, FH JOANNEUM * http://www.fh-joanneum.at/itm * * Licenced under the GNU GENERAL PUBLIC LICENSE Version 2; * You may obtain a copy of the License at * http://www.gnu.org/licenses/gpl-2.0.txt * * This program 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 General Public License for more details. *******************************************************************************/ package at.rc.tacos.client.editors; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.CLabel; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.IEditorInput; import org.eclipse.ui.IEditorSite; import org.eclipse.ui.IWorkbenchPartConstants; import org.eclipse.ui.PartInitException; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.forms.events.HyperlinkAdapter; import org.eclipse.ui.forms.events.HyperlinkEvent; import org.eclipse.ui.forms.widgets.ExpandableComposite; import org.eclipse.ui.forms.widgets.FormToolkit; import org.eclipse.ui.forms.widgets.ImageHyperlink; import org.eclipse.ui.forms.widgets.ScrolledForm; import org.eclipse.ui.forms.widgets.Section; import org.eclipse.ui.part.EditorPart; import at.rc.tacos.client.controller.EditorCloseAction; import at.rc.tacos.client.controller.EditorSaveAction; import at.rc.tacos.client.modelManager.ModelFactory; import at.rc.tacos.client.util.CustomColors; import at.rc.tacos.core.net.NetWrapper; import at.rc.tacos.factory.ImageFactory; import at.rc.tacos.model.Job; public class JobEditor extends EditorPart implements PropertyChangeListener { public static final String ID = "at.rc.tacos.client.editors.jobEditor"; // properties boolean isDirty; private FormToolkit toolkit; private ScrolledForm form; private CLabel infoLabel; private ImageHyperlink saveHyperlink, removeHyperlink; private Text id, name; // managed data private Job job; private boolean isNew; /** * Default class constructor */ public JobEditor() { ModelFactory.getInstance().getJobList().addPropertyChangeListener(this); } /** * Cleanup */ @Override public void dispose() { ModelFactory.getInstance().getJobList().removePropertyChangeListener(this); } /** * This is a callback that will allow us to create the viewer and initialize * it. */ @Override public void createPartControl(final Composite parent) { job = ((JobEditorInput) getEditorInput()).getJob(); isNew = ((JobEditorInput) getEditorInput()).isNew(); isDirty = false; // Create the form toolkit = new FormToolkit(CustomColors.FORM_COLOR(parent.getDisplay())); form = toolkit.createScrolledForm(parent); toolkit.decorateFormHeading(form.getForm()); form.getBody().setLayout(new GridLayout()); form.getBody().setLayoutData(new GridData(GridData.FILL_BOTH)); // create the content createManageSection(form.getBody()); createDetailSection(form.getBody()); // load the data loadData(); // disable editing of system jobs if (job.getId() <= 11 && job.getId() > 0) { form.setText("Vom System vorgegebene Verwendungen knnen nicht bearbeitet werden."); form.setEnabled(false); } // force redraw form.pack(true); } /** * Creates the section to manage the changes */ private void createManageSection(Composite parent) { Composite client = createSection(parent, "Verwendung verwalten"); // create info label and hyperlinks to save and revert the changes infoLabel = new CLabel(client, SWT.NONE); infoLabel.setText("Hier knnen sie die aktuelle Verwendung verwalten und die nderungen speichern."); infoLabel.setImage(ImageFactory.getInstance().getRegisteredImage("admin.info")); // Create the hyperlink to save the changes saveHyperlink = toolkit.createImageHyperlink(client, SWT.NONE); saveHyperlink.setText("nderungen speichern"); saveHyperlink.setEnabled(false); saveHyperlink.setForeground(CustomColors.GREY_COLOR); saveHyperlink.setImage(ImageFactory.getInstance().getRegisteredImage("admin.saveDisabled")); saveHyperlink.addHyperlinkListener(new HyperlinkAdapter() { @Override public void linkActivated(HyperlinkEvent e) { EditorSaveAction saveAction = new EditorSaveAction(); saveAction.run(); } }); // Create the hyperlink to remove the competence removeHyperlink = toolkit.createImageHyperlink(client, SWT.NONE); removeHyperlink.setText("Verwendung lschen"); removeHyperlink.setImage(ImageFactory.getInstance().getRegisteredImage("admin.jobRemove")); removeHyperlink.addHyperlinkListener(new HyperlinkAdapter() { @Override public void linkActivated(HyperlinkEvent e) { boolean result = MessageDialog.openConfirm(getSite().getShell(), "Lschen der Verwendung besttigen", "Mchten sie die Verwendung " + job.getJobName() + " wirklich lschen?"); if (!result) return; // reset the dirty flag to prevent the 'save changes' to popup // on a deleted item isDirty = false; // send the remove request NetWrapper.getDefault().sendRemoveMessage(Job.ID, job); } }); // info label should span over two GridData data = new GridData(GridData.FILL_BOTH); data.horizontalSpan = 2; data.widthHint = 600; infoLabel.setLayoutData(data); } /** * Creates the section containing the job details * * @param parent * the parent composite */ private void createDetailSection(Composite parent) { Composite client = createSection(parent, "Verwendungs Details"); // label and the text field final Label labelId = toolkit.createLabel(client, "Verwendungs ID"); id = toolkit.createText(client, ""); id.setEditable(false); id.setBackground(CustomColors.GREY_COLOR); id.setToolTipText("Die ID wird automatisch generiert"); final Label labelCompName = toolkit.createLabel(client, "Verwendungs Bezeichnung"); name = toolkit.createText(client, ""); name.addModifyListener(new ModifyListener() { @Override public void modifyText(ModifyEvent me) { inputChanged(); } }); // set the layout for the composites GridData data = new GridData(); data.widthHint = 150; labelId.setLayoutData(data); data = new GridData(); data.widthHint = 150; labelCompName.setLayoutData(data); // layout for the text fields GridData data2 = new GridData(GridData.FILL_HORIZONTAL); id.setLayoutData(data2); data2 = new GridData(GridData.FILL_HORIZONTAL); name.setLayoutData(data2); } /** * Loads the data and shows them in the view */ private void loadData() { // init the editor if (isNew) { form.setText("Neue Verwendung anlegen"); removeHyperlink.setVisible(false); return; } // enable the remove link removeHyperlink.setVisible(true); // load the data form.setText("Details der Verwendung " + job.getJobName()); id.setText(String.valueOf(job.getId())); name.setText(job.getJobName()); } @Override public void doSave(IProgressMonitor monitor) { // reset error message form.setMessage(null, IMessageProvider.NONE); // name must be provided if (name.getText().length() > 30 || name.getText().trim().isEmpty()) { form.getDisplay().beep(); form.setMessage("Bitte geben sie eine gltige Bezeichnung fr die Verwendung an(max. 30 Zeichen)", IMessageProvider.ERROR); return; } job.setJobName(name.getText()); // add or update the job if (isNew) NetWrapper.getDefault().sendAddMessage(Job.ID, job); else NetWrapper.getDefault().sendUpdateMessage(Job.ID, job); } @Override public void doSaveAs() { // not supported } @Override public void init(IEditorSite site, IEditorInput input) throws PartInitException { setSite(site); setInput(input); setPartName(input.getName()); } @Override public void setFocus() { form.setFocus(); } @Override public boolean isDirty() { return isDirty; } @Override public boolean isSaveAsAllowed() { // not supported return false; } @Override public void propertyChange(PropertyChangeEvent evt) { if ("JOB_UPDATE".equals(evt.getPropertyName()) || "JOB_ADD".equalsIgnoreCase(evt.getPropertyName())) { Job updateJob = null; // get the new value if (evt.getNewValue() instanceof Job) updateJob = (Job) evt.getNewValue(); // assert we have a value if (updateJob == null) return; // is this job the current -> update it if (job.equals(updateJob) || job.getJobName().equals(updateJob.getJobName())) { // save the updated job setInput(new JobEditorInput(updateJob, false)); setPartName(updateJob.getJobName()); job = updateJob; isNew = false; // update the editor loadData(); // show the result isDirty = false; infoLabel.setText("nderungen gespeichert"); infoLabel.setImage(ImageFactory.getInstance().getRegisteredImage("info.ok")); Display.getCurrent().beep(); } } if ("JOB_REMOVE".equalsIgnoreCase(evt.getPropertyName())) { // get the removed job Job removedJob = (Job) evt.getOldValue(); // current open if (job.equals(removedJob)) { MessageDialog.openInformation(getSite().getShell(), "Verwendung wurde gelscht", "Die Verwendung, welches Sie gerade editieren, wurde gelscht"); EditorCloseAction closeAction = new EditorCloseAction( PlatformUI.getWorkbench().getActiveWorkbenchWindow()); closeAction.run(); } } } // Helper methods /** * Creates and returns a section and a composite with two colums * * @param parent * the parent composite * @param sectionName * the title of the section * @return the created composite to hold the other widgets */ private Composite createSection(Composite parent, String sectionName) { // create the section Section section = toolkit.createSection(parent, ExpandableComposite.TITLE_BAR | ExpandableComposite.TWISTIE); toolkit.createCompositeSeparator(section); section.setText(sectionName); section.setLayout(new GridLayout()); section.setLayoutData(new GridData( GridData.BEGINNING | GridData.HORIZONTAL_ALIGN_BEGINNING | GridData.VERTICAL_ALIGN_BEGINNING)); section.setExpanded(true); // composite to add the client area Composite client = new Composite(section, SWT.NONE); section.setClient(client); // layout GridLayout layout = new GridLayout(); layout.numColumns = 2; layout.makeColumnsEqualWidth = false; client.setLayout(layout); GridData clientDataLayout = new GridData(GridData.BEGINNING | GridData.HORIZONTAL_ALIGN_BEGINNING | GridData.VERTICAL_ALIGN_BEGINNING | GridData.FILL_BOTH); client.setLayoutData(clientDataLayout); return client; } /** * This is called when the input of a text box or a combo box was changes */ private void inputChanged() { // reset the flag isDirty = false; // get the current input JobEditorInput jobInput = (JobEditorInput) getEditorInput(); Job persistantJob = jobInput.getJob(); // check the first name if (!name.getText().equalsIgnoreCase(persistantJob.getJobName())) { isDirty = true; infoLabel.setText("Bitte speichern Sie ihre lokalen nderungen."); infoLabel.setImage(ImageFactory.getInstance().getRegisteredImage("info.warning")); saveHyperlink.setEnabled(true); saveHyperlink.setForeground(CustomColors.COLOR_LINK); saveHyperlink.setImage(ImageFactory.getInstance().getRegisteredImage("admin.save")); } else { infoLabel.setText("Hier knnen sie die aktuelle Verwendung verwalten und die nderungen speichern."); infoLabel.setImage(ImageFactory.getInstance().getRegisteredImage("admin.info")); saveHyperlink.setEnabled(false); saveHyperlink.setForeground(CustomColors.GREY_COLOR); saveHyperlink.setImage(ImageFactory.getInstance().getRegisteredImage("admin.saveDisabled")); } // set the dirty flag firePropertyChange(IWorkbenchPartConstants.PROP_DIRTY); } }