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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.taxeditor.view.e4;
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import javax.inject.Inject;
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import org.eclipse.e4.core.contexts.ContextInjectionFactory;
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import org.eclipse.e4.core.contexts.IEclipseContext;
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import org.eclipse.e4.core.services.log.Logger;
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import org.eclipse.jface.viewers.Viewer;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.SWTException;
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import org.eclipse.swt.widgets.Composite;
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import org.eclipse.swt.widgets.Control;
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import org.eclipse.swt.widgets.Display;
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import org.eclipse.ui.forms.IFormPart;
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import org.eclipse.ui.forms.ManagedForm;
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import org.eclipse.ui.forms.widgets.ScrolledForm;
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import eu.etaxonomy.cdm.api.conversation.ConversationHolder;
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import eu.etaxonomy.cdm.api.conversation.IConversationEnabled;
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import eu.etaxonomy.taxeditor.model.IDirtyMarkable;
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import eu.etaxonomy.taxeditor.model.MessagingUtils;
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import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
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import eu.etaxonomy.taxeditor.remoting.CdmEagerLoadingException;
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import eu.etaxonomy.taxeditor.ui.element.AbstractFormSection;
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import eu.etaxonomy.taxeditor.ui.element.CdmFormFactory;
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import eu.etaxonomy.taxeditor.ui.element.LayoutConstants;
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import eu.etaxonomy.taxeditor.ui.element.RootElement;
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import eu.etaxonomy.taxeditor.ui.section.occurrence.EmptySection;
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import eu.etaxonomy.taxeditor.view.detail.CdmSectionPart;
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/**
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*
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* @author pplitzner
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* @date 18.07.2017
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*
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*/
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public abstract class AbstractCdmDataViewerE4 extends Viewer implements IConversationEnabled{
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@Inject
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private Logger logger;
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protected ManagedForm managedForm;
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protected CdmFormFactory formFactory;
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protected ScrolledForm scrolledForm;
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private Composite body;
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protected RootElement rootElement;
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@Inject
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protected IEclipseContext context;
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//TODO: create a super class for this?
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private Object input;
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protected IDirtyMarkable part;
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@Inject
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public AbstractCdmDataViewerE4() {
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}
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public void init(Composite parent, IDirtyMarkable part) {
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this.part = part;
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managedForm = new ManagedForm(parent){
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@Override
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public void dirtyStateChanged() {
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markViewPartDirty();
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}
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};
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createFormFactory();
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scrolledForm = managedForm.getForm();
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body = scrolledForm.getBody();
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body.setLayout(LayoutConstants.LAYOUT());
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rootElement = new RootElement(formFactory, body);
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}
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protected void createEmptySection(String message, RootElement parent) {
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destroySections();
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EmptySection emptySection = formFactory.createEmptySection(message, formFactory, parent, SWT.NONE);
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addPart(emptySection);
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}
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public void showEmptyPage(String message){
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destroySections();
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createEmptySection(message, rootElement);
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}
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protected void markViewPartDirty(){
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part.changed(input);
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}
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protected void createFormFactory() {
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if(formFactory != null){
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formFactory.dispose();
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formFactory = null;
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}
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formFactory = new CdmFormFactory(Display.getCurrent(), this);
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ContextInjectionFactory.inject(formFactory, context);
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}
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/** {@inheritDoc} */
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@Override
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public Control getControl() {
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if(body!=null){
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if(body.isDisposed()){
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return null;
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}
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for(Control child : body.getChildren()){
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return child;
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}
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}
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return body;
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}
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/** {@inheritDoc} */
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@Override
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public void setInput(Object input) {
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this.input = input;
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if(input!=null){
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try{
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refresh();
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}catch(CdmEagerLoadingException e){
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logger.error(e);
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}
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}
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}
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/** {@inheritDoc} */
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@Override
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public Object getInput() {
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return input;
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}
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/** {@inheritDoc} */
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@Override
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public void refresh() {
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showParts();
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managedForm.setInput(input);
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managedForm.refresh();
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managedForm.reflow(true);
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}
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public void layout(){
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body.layout();
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}
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protected abstract void showParts();
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public void destroySections() {
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for (IFormPart formPart : managedForm.getParts()){
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removePart((CdmSectionPart<?>) formPart);
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}
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managedForm.setInput(null);
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formFactory.destroyElement(rootElement);
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createFormFactory();
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rootElement = new RootElement(formFactory, body);
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for(Control control : body.getChildren()){
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try{
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if (control != null && !control.isDisposed()){
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control.dispose();
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}
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}catch(SWTException e){
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if (PreferencesUtil.isShowUpWidgetIsDisposedMessages() && e.getMessage().equals("Widget is disposed")){
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MessagingUtils.errorDialog("Widget is disposed",
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null,
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MessagingUtils.WIDGET_IS_DISPOSED_MESSAGE,
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null,
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e,
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true);
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}
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}
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control = null;
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}
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}
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public void setFocus(){
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// we have to set focus to a control of this viewer
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// otherwise, after opening a dialog from the details, the focus will not be
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// given back to the details view but to the editor
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for(Control child : body.getChildren()){
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child.setFocus();
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break;
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}
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}
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public void reflow(){
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managedForm.reflow(true);
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}
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protected void removePart(CdmSectionPart<?> sectionPart){
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managedForm.removePart(sectionPart);
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formFactory.removePropertyChangeListener(sectionPart);
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}
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protected void addPart(AbstractFormSection<?> section){
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CdmSectionPart<?> sectionPart = new CdmSectionPart<>(section);
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managedForm.addPart(sectionPart);
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formFactory.addPropertyChangeListener(sectionPart);
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}
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@Override
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public ConversationHolder getConversationHolder() {
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return null;
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}
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}
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