Java tutorial
/******************************************************************************* * Copyright (c) 2008 Dennis Schenk, Peter Siska. * 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: * Dennis Schenk - initial implementation * Peter Siska - initial implementation *******************************************************************************/ package ch.unibe.iam.scg.archie.ui.views; import java.util.TreeMap; import org.eclipse.jface.fieldassist.AutoCompleteField; import org.eclipse.jface.fieldassist.ComboContentAdapter; import org.eclipse.jface.util.IPropertyChangeListener; import org.eclipse.jface.util.PropertyChangeEvent; import org.eclipse.swt.SWT; 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.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Group; import org.eclipse.ui.part.ViewPart; import ch.elexis.core.data.events.ElexisEvent; import ch.elexis.core.data.events.ElexisEventDispatcher; import ch.elexis.core.ui.events.ElexisUiEventListenerImpl; import ch.elexis.data.Anwender; import ch.unibe.iam.scg.archie.ArchieActivator; import ch.unibe.iam.scg.archie.acl.ArchieACL; import ch.unibe.iam.scg.archie.actions.NewStatisticsAction; import ch.unibe.iam.scg.archie.controller.ProviderManager; import ch.unibe.iam.scg.archie.i18n.Messages; import ch.unibe.iam.scg.archie.model.AbstractDataProvider; import ch.unibe.iam.scg.archie.ui.DetailsPanel; /** * <p> * In this View a user can chose a statistic, set options for it and run it. * </p> * * $Id: SidebarView.java 774 2010-01-29 05:47:10Z gerry.weirich $ * * @author Peter Siska * @author Dennis Schenk * @version $Rev: 774 $ */ public class SidebarView extends ViewPart implements IPropertyChangeListener { /** * ID of this view. */ public static final String ID = ArchieActivator.PLUGIN_ID + ".ui.views.StatisticsSidebarView"; protected Combo list; protected DetailsPanel details; protected AutoCompleteField autoComplete; private ElexisUiEventListenerImpl eeli_user = new ElexisUiEventListenerImpl(Anwender.class, ElexisEvent.EVENT_USER_CHANGED) { @Override public void runInUi(ElexisEvent ev) { // Set enabled according to ACL. boolean accessEnabled = ArchieACL.userHasAccess(); setEnabled(accessEnabled); // If a user has no access at all, disable everything. if (!accessEnabled) { details.setCancelButtonEnabled(accessEnabled); details.setActionEnabled(accessEnabled); // If there's a provider currently selected, enable the query // action. } else if (list.getSelectionIndex() != -1) { details.setActionEnabled(accessEnabled); } // Cancel any previous job if running. if (ProviderManager.getInstance().hasProvider()) { ProviderManager.getInstance().getProvider().cancel(); } } }; /** * @see org.eclipse.ui.part.WorkbenchPart#createPartControl(org.eclipse.swt.widgets.Composite) */ @Override public void createPartControl(final Composite parent) { // create a new container for sidebar controls Composite container = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(); container.setLayout(layout); // Create a simple field for auto complete. Group availableStatistics = new Group(container, SWT.NONE); availableStatistics.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); availableStatistics.setLayout(layout); availableStatistics.setText(Messages.STATISTICS_LIST_TITLE); // Create an auto-complete field TreeMap<String, AbstractDataProvider> providers = ArchieActivator.getInstance().getProviderTable(); String[] availableTitles = providers.keySet().toArray(new String[providers.size()]); this.list = new Combo(availableStatistics, SWT.BORDER | SWT.DROP_DOWN); this.list.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); this.autoComplete = new AutoCompleteField(this.list, new ComboContentAdapter(), availableTitles); this.list.setItems(availableTitles); // NOTE: Currently does not work on GTK, any maybe not even on OS X // TODO: Add value in Archie preference pane. this.list.setVisibleItemCount(5); // add listeners this.list.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { String title = SidebarView.this.list.getText(); if (SidebarView.this.isValidProviderTitle(title)) { AbstractDataProvider provider = ArchieActivator.getInstance().getProviderTable().get(title); ProviderManager.getInstance().setProvider(provider); } else { SidebarView.this.details.reset(); } } }); // Add parameters group. Group statisticParameters = new Group(container, SWT.NONE); statisticParameters.setLayoutData(new GridData(GridData.FILL_BOTH)); statisticParameters.setLayout(layout); statisticParameters.setText(Messages.STATISTIC_PARAMETERS_TITLE); // Add details panel containing details and parameters. this.details = new DetailsPanel(statisticParameters, SWT.NONE); this.details.addPropertyChangeListener(this); // Disable by default if user has no access rights. this.setEnabled(ArchieACL.userHasAccess()); // Register this view for UserChanged events. ElexisEventDispatcher.getInstance().addListeners(eeli_user); } /** * Checks whether the title passed to this function is a valid data provider * we have in the statistics table. * * @param title * Provider title. * @return True if the there is a provider with the given title, false else. */ protected boolean isValidProviderTitle(String title) { return ArchieActivator.getInstance().getProviderTable().get(title) != null; } /** * Nothing is done on focus here. * * @see org.eclipse.ui.part.WorkbenchPart#setFocus() */ @Override public void setFocus() { // do nothing } /** * Sets all children enabled according to the boolean passed to this * function. * * @param enabled * True if children should be enabled, false else. */ public void setEnabled(boolean enabled) { this.list.setEnabled(enabled); this.details.setEnabled(enabled); } /** * @see org.eclipse.jface.util.IPropertyChangeListener#propertyChange * (org.eclipse.jface.util.PropertyChangeEvent) */ public void propertyChange(PropertyChangeEvent event) { if (event.getProperty().equals(NewStatisticsAction.JOB_RUNNING)) { this.setEnabled(false); } if (event.getProperty().equals(NewStatisticsAction.JOB_DONE)) { this.setEnabled(true); } } /** * Removes any currently managed provider from the provider manager. * * @see ProviderManager * @see org.eclipse.ui.part.WorkbenchPart#dispose() */ @Override public void dispose() { ProviderManager.getInstance().setProvider(null); ElexisEventDispatcher.getInstance().removeListeners(eeli_user); super.dispose(); } }