Java tutorial
/******************************************************************************* * Copyright (c) 2010 BestSolution.at 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: * Tom Schindl <tom.schindl@bestsolution.at> - initial API and implementation ******************************************************************************/ package org.eclipse.e4.tools.emf.ui.internal.common.component; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.List; import javax.annotation.PostConstruct; import javax.inject.Inject; import org.eclipse.core.databinding.observable.list.IObservableList; import org.eclipse.core.databinding.property.list.IListProperty; import org.eclipse.e4.core.contexts.IEclipseContext; import org.eclipse.e4.tools.emf.ui.common.IEditorFeature.FeatureClass; import org.eclipse.e4.tools.emf.ui.common.Util; import org.eclipse.e4.tools.emf.ui.common.component.AbstractComponentEditor; import org.eclipse.e4.tools.emf.ui.internal.ResourceProvider; import org.eclipse.e4.tools.emf.ui.internal.common.ComponentLabelProvider; import org.eclipse.e4.tools.emf.ui.internal.common.component.ControlFactory.TextPasteHandler; import org.eclipse.e4.tools.emf.ui.internal.common.component.dialogs.FeatureSelectionDialog; import org.eclipse.e4.tools.emf.ui.internal.common.component.dialogs.FindParentReferenceElementDialog; import org.eclipse.e4.tools.emf.ui.internal.common.uistructure.ViewerElement; import org.eclipse.e4.ui.model.application.impl.ApplicationPackageImpl; import org.eclipse.e4.ui.model.fragment.MModelFragment; import org.eclipse.e4.ui.model.fragment.MStringModelFragment; import org.eclipse.e4.ui.model.fragment.impl.FragmentPackageImpl; import org.eclipse.emf.common.command.Command; import org.eclipse.emf.databinding.EMFDataBindingContext; import org.eclipse.emf.databinding.EMFProperties; import org.eclipse.emf.databinding.IEMFListProperty; import org.eclipse.emf.databinding.edit.EMFEditProperties; import org.eclipse.emf.ecore.EClass; import org.eclipse.emf.ecore.EObject; import org.eclipse.emf.ecore.util.EcoreUtil; import org.eclipse.emf.edit.command.AddCommand; import org.eclipse.emf.edit.command.MoveCommand; import org.eclipse.emf.edit.command.RemoveCommand; import org.eclipse.jface.action.Action; import org.eclipse.jface.databinding.swt.IWidgetValueProperty; import org.eclipse.jface.databinding.swt.WidgetProperties; import org.eclipse.jface.databinding.viewers.ObservableListContentProvider; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerComparator; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.CTabFolder; import org.eclipse.swt.custom.CTabItem; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; public class StringModelFragment extends AbstractComponentEditor { private Composite composite; private EMFDataBindingContext context; private IListProperty MODEL_FRAGMENT__ELEMENTS = EMFProperties .list(FragmentPackageImpl.Literals.MODEL_FRAGMENT__ELEMENTS); private List<Action> actions = new ArrayList<Action>(); @Inject IEclipseContext eclipseContext; @Inject public StringModelFragment() { super(); } @PostConstruct public void init() { List<FeatureClass> list = new ArrayList<FeatureClass>(); Util.addClasses(ApplicationPackageImpl.eINSTANCE, list); list.addAll(getEditor().getFeatureClasses(FragmentPackageImpl.Literals.MODEL_FRAGMENT, FragmentPackageImpl.Literals.MODEL_FRAGMENT__ELEMENTS)); for (final FeatureClass featureClass : list) { actions.add(new Action(featureClass.label) { @Override public void run() { handleAdd(featureClass.eClass, false); } }); } } @Override public Image getImage(Object element, Display display) { return createImage(ResourceProvider.IMG_StringModelFragment); } @Override public String getLabel(Object element) { return Messages.StringModelFragment_Label; } @Override public String getDetailLabel(Object element) { return null; } @Override public String getDescription(Object element) { return Messages.StringModelFragment_Description; } @Override public Composite doGetEditor(Composite parent, Object object) { if (composite == null) { context = new EMFDataBindingContext(); composite = createForm(parent); } getMaster().setValue(object); return composite; } private Composite createForm(Composite parent) { CTabFolder folder = new CTabFolder(parent, SWT.BOTTOM); CTabItem item = new CTabItem(folder, SWT.NONE); item.setText(Messages.ModelTooling_Common_TabDefault); parent = createScrollableContainer(folder); item.setControl(parent.getParent()); if (getEditor().isShowXMIId() || getEditor().isLiveModel()) { ControlFactory.createXMIId(parent, this); } IWidgetValueProperty textProp = WidgetProperties.text(SWT.Modify); { Label l = new Label(parent, SWT.NONE); l.setText(Messages.StringModelFragment_ParentId); l.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_END)); Composite comp = new Composite(parent, SWT.NONE); GridData gd = new GridData(GridData.FILL_HORIZONTAL); gd.horizontalSpan = 2; comp.setLayoutData(gd); GridLayout gl = new GridLayout(2, false); gl.marginWidth = gl.marginHeight = 0; gl.verticalSpacing = 0; gl.marginLeft = gl.marginBottom = gl.marginRight = gl.marginTop = 0; comp.setLayout(gl); Text t = new Text(comp, SWT.BORDER); TextPasteHandler.createFor(t); // t.setEditable(false); gd = new GridData(GridData.FILL_HORIZONTAL); t.setLayoutData(gd); context.bindValue(textProp.observeDelayed(200, t), EMFEditProperties .value(getEditingDomain(), FragmentPackageImpl.Literals.STRING_MODEL_FRAGMENT__PARENT_ELEMENT_ID) .observeDetail(getMaster())); final Button b = new Button(comp, SWT.PUSH | SWT.FLAT); b.setText(Messages.ModelTooling_Common_FindEllipsis); b.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { FindParentReferenceElementDialog dialog = new FindParentReferenceElementDialog(b.getShell(), StringModelFragment.this, (MStringModelFragment) getMaster().getValue(), Messages); dialog.open(); } }); } { Label l = new Label(parent, SWT.NONE); l.setText(Messages.StringModelFragment_Featurename); l.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_END)); Composite comp = new Composite(parent, SWT.NONE); GridData gd = new GridData(GridData.FILL_HORIZONTAL); gd.horizontalSpan = 2; comp.setLayoutData(gd); GridLayout gl = new GridLayout(2, false); gl.marginWidth = gl.marginHeight = 0; gl.verticalSpacing = 0; gl.marginLeft = gl.marginBottom = gl.marginRight = gl.marginTop = 0; comp.setLayout(gl); Text t = new Text(comp, SWT.BORDER); TextPasteHandler.createFor(t); gd = new GridData(GridData.FILL_HORIZONTAL); t.setLayoutData(gd); context.bindValue(textProp.observeDelayed(200, t), EMFEditProperties .value(getEditingDomain(), FragmentPackageImpl.Literals.STRING_MODEL_FRAGMENT__FEATURENAME) .observeDetail(getMaster())); final Button button = new Button(comp, SWT.PUSH | SWT.FLAT); button.setText(Messages.ModelTooling_Common_FindEllipsis); button.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { FeatureSelectionDialog dialog = new FeatureSelectionDialog(button.getShell(), getEditingDomain(), (MStringModelFragment) getMaster().getValue(), Messages); dialog.open(); } }); } ControlFactory.createTextField(parent, Messages.StringModelFragment_PositionInList, getMaster(), context, textProp, EMFEditProperties.value(getEditingDomain(), FragmentPackageImpl.Literals.STRING_MODEL_FRAGMENT__POSITION_IN_LIST)); // ------------------------------------------------------------ { final ViewerElement tableElement = ViewerElement.create(eclipseContext, parent, this); tableElement.getViewer().setContentProvider(new ObservableListContentProvider()); tableElement.getViewer().setLabelProvider(new ComponentLabelProvider(getEditor(), Messages)); tableElement.getDropDown().setContentProvider(new ArrayContentProvider()); tableElement.getDropDown().setLabelProvider(new LabelProvider() { @Override public String getText(Object element) { FeatureClass eclass = (FeatureClass) element; return eclass.label; } }); tableElement.getDropDown().setComparator(new ViewerComparator() { @Override public int compare(Viewer viewer, Object e1, Object e2) { FeatureClass eClass1 = (FeatureClass) e1; FeatureClass eClass2 = (FeatureClass) e2; return eClass1.label.compareTo(eClass2.label); } }); tableElement.getDropDown().setContentProvider(new ArrayContentProvider()); tableElement.getDropDown().setLabelProvider(new LabelProvider() { @Override public String getText(Object element) { FeatureClass eclass = (FeatureClass) element; return eclass.label; } }); tableElement.getDropDown().setComparator(new ViewerComparator() { @Override public int compare(Viewer viewer, Object e1, Object e2) { FeatureClass eClass1 = (FeatureClass) e1; FeatureClass eClass2 = (FeatureClass) e2; return eClass1.label.compareTo(eClass2.label); } }); tableElement.getButtonAdd().addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { EClass eClass = ((FeatureClass) ((IStructuredSelection) tableElement.getDropDown() .getSelection()).getFirstElement()).eClass; EObject eObject = EcoreUtil.create(eClass); setElementId(eObject); Command cmd = AddCommand.create(getEditingDomain(), getMaster().getValue(), FragmentPackageImpl.Literals.MODEL_FRAGMENT__ELEMENTS, eObject); if (cmd.canExecute()) { getEditingDomain().getCommandStack().execute(cmd); getEditor().setSelection(eObject); } } }); tableElement.getButtonRemove().addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { if (!tableElement.getViewer().getSelection().isEmpty()) { List<?> elements = ((IStructuredSelection) tableElement.getViewer().getSelection()) .toList(); Command cmd = RemoveCommand.create(getEditingDomain(), getMaster().getValue(), FragmentPackageImpl.Literals.MODEL_FRAGMENT__ELEMENTS, elements); if (cmd.canExecute()) { getEditingDomain().getCommandStack().execute(cmd); } } } }); tableElement.getButtonDown().addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { if (!tableElement.getViewer().getSelection().isEmpty()) { IStructuredSelection s = (IStructuredSelection) tableElement.getViewer().getSelection(); if (s.size() == 1) { Object obj = s.getFirstElement(); MModelFragment container = (MModelFragment) getMaster().getValue(); int idx = container.getElements().indexOf(obj) + 1; if (idx < container.getElements().size()) { Command cmd = MoveCommand.create(getEditingDomain(), getMaster().getValue(), FragmentPackageImpl.Literals.MODEL_FRAGMENT__ELEMENTS, obj, idx); if (cmd.canExecute()) { getEditingDomain().getCommandStack().execute(cmd); tableElement.getViewer().setSelection(new StructuredSelection(obj)); } } } } } }); tableElement.getButtonUp().addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { if (!tableElement.getViewer().getSelection().isEmpty()) { IStructuredSelection s = (IStructuredSelection) tableElement.getViewer().getSelection(); if (s.size() == 1) { Object obj = s.getFirstElement(); MModelFragment container = (MModelFragment) getMaster().getValue(); int idx = container.getElements().indexOf(obj) - 1; if (idx >= 0) { Command cmd = MoveCommand.create(getEditingDomain(), getMaster().getValue(), FragmentPackageImpl.Literals.MODEL_FRAGMENT__ELEMENTS, obj, idx); if (cmd.canExecute()) { getEditingDomain().getCommandStack().execute(cmd); tableElement.getViewer().setSelection(new StructuredSelection(obj)); } } } } } }); List<FeatureClass> list = new ArrayList<FeatureClass>(); Util.addClasses(ApplicationPackageImpl.eINSTANCE, list); list.addAll(getEditor().getFeatureClasses(FragmentPackageImpl.Literals.MODEL_FRAGMENT, FragmentPackageImpl.Literals.MODEL_FRAGMENT__ELEMENTS)); tableElement.getDropDown().setInput(list); tableElement.getDropDown().getCombo().select(0); IEMFListProperty prop = EMFProperties.list(FragmentPackageImpl.Literals.MODEL_FRAGMENT__ELEMENTS); tableElement.getViewer().setInput(prop.observeDetail(getMaster())); } createContributedEditorTabs(folder, context, getMaster(), MStringModelFragment.class); folder.setSelection(0); return folder; } public void dispose() { if (composite != null) { composite.dispose(); composite = null; } if (context != null) { context.dispose(); context = null; } } @Override public IObservableList getChildList(Object element) { return MODEL_FRAGMENT__ELEMENTS.observe(element); } protected void handleAdd(EClass eClass, boolean separator) { EObject eObject = EcoreUtil.create(eClass); setElementId(eObject); Command cmd = AddCommand.create(getEditingDomain(), getMaster().getValue(), FragmentPackageImpl.Literals.MODEL_FRAGMENT__ELEMENTS, eObject); if (cmd.canExecute()) { getEditingDomain().getCommandStack().execute(cmd); getEditor().setSelection(eObject); } } @Override public List<Action> getActions(Object element) { ArrayList<Action> l = new ArrayList<Action>(super.getActions(element)); l.addAll(actions); Collections.sort(l, new Comparator<Action>() { @Override public int compare(Action o1, Action o2) { return o1.getText().compareTo(o2.getText()); } }); return l; } }