Java tutorial
/******************************************************************************* * Copyright (c) 2014 Hussein Mhanna * * 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: * Hussein Mhanna - initial API and implementation ******************************************************************************/ package org.eclipse.rmf.reqif10.search.ui.masterdetails; import org.eclipse.core.databinding.Binding; import org.eclipse.core.databinding.DataBindingContext; import org.eclipse.core.databinding.observable.Realm; import org.eclipse.core.databinding.observable.value.IObservableValue; import org.eclipse.core.databinding.observable.value.WritableValue; import org.eclipse.emf.databinding.edit.EMFEditObservables; import org.eclipse.emf.ecore.EStructuralFeature; import org.eclipse.emf.edit.domain.EditingDomain; import org.eclipse.jface.databinding.fieldassist.ControlDecorationSupport; import org.eclipse.jface.databinding.swt.WidgetProperties; import org.eclipse.jface.databinding.viewers.ViewersObservables; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.ComboViewer; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.rmf.reqif10.search.criteria.Criteria; import org.eclipse.rmf.reqif10.search.criteria.CriteriaPackage.Literals; import org.eclipse.rmf.reqif10.search.criteria.Operator; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.forms.IDetailsPage; import org.eclipse.ui.forms.IFormPart; import org.eclipse.ui.forms.IManagedForm; import org.eclipse.ui.forms.widgets.ExpandableComposite; import org.eclipse.ui.forms.widgets.FormToolkit; import org.eclipse.ui.forms.widgets.Section; /** * * @author Hussein MHANNA * */ public class CriteriaDetailsPage implements IDetailsPage { /** * The managed form */ private IManagedForm managedForm; /** * The input object */ private Object input; /** * The feature text widget */ private Text featureTextWidget; /** * The operator combo viewer */ private ComboViewer operatorComboViewer; /** * The searched text widget */ private Text searchedTextWidget; /** * The replacement text widget */ private Text replacementTextWidget; /** * The case sensitive check button */ private Button caseSensitiveButton; /** * The writable value */ private WritableValue writableValue = new WritableValue(); /** * The editing domain */ private EditingDomain editingDomain; /** * The form toolkit */ private FormToolkit toolkit; /** * The data binding context */ private DataBindingContext bindingContext; /** * The constructor * * @param editingDomain * : The editing domain */ public CriteriaDetailsPage(EditingDomain editingDomain) { this.editingDomain = editingDomain; } /** * {@inheritDoc} */ @Override public void initialize(final IManagedForm form) { managedForm = form; } /** * Return the {@link FormToolkit} of the managed form * * @return The {@link FormToolkit} of the managed form */ protected FormToolkit getFormToolkit() { return managedForm.getToolkit(); } /** * {@inheritDoc} */ @Override public void dispose() { managedForm.getToolkit().dispose(); } /** * Set the focus to the form of the {@link IManagedForm} */ @Override public void setFocus() { managedForm.getForm().setFocus(); } /** * {@inheritDoc} This method return <code>false</code> */ @Override public boolean isDirty() { return false; } /** * {@inheritDoc} This method do nothing */ @Override public void commit(final boolean onSave) { } /** * {@inheritDoc} This method return <code>false</code> */ @Override public boolean setFormInput(final Object input) { return false; } /** * {@inheritDoc} This method return <code>false</code> */ @Override public boolean isStale() { return false; } /** * {@inheritDoc} This method do nothing */ @Override public void refresh() { } /** * {@inheritDoc} Update the selection and call {@link #update(Object)} */ @Override public void selectionChanged(final IFormPart part, final ISelection selection) { final IStructuredSelection structuredSelection = (IStructuredSelection) selection; if (structuredSelection.size() == 1) { input = (Criteria) structuredSelection.getFirstElement(); } writableValue.setValue(input); } protected void initDataBindings() { bindingContext = new DataBindingContext(); Binding featureComboViewerBinding = bindTextWidget(featureTextWidget, Literals.CRITERIA__FEATURE_NAME); ControlDecorationSupport.create(featureComboViewerBinding, SWT.TOP | SWT.LEFT); Binding operatorComboViewerBinding = bindComboViewer(operatorComboViewer, Literals.CRITERIA__OPERATOR); ControlDecorationSupport.create(operatorComboViewerBinding, SWT.TOP | SWT.LEFT); Binding searchedTextBinding = bindTextWidget(searchedTextWidget, Literals.CRITERIA__SERACHED_TEXT); ControlDecorationSupport.create(searchedTextBinding, SWT.TOP | SWT.LEFT); Binding replacementTextBinding = bindTextWidget(replacementTextWidget, Literals.CRITERIA__REPLACEMENT_TEXT); ControlDecorationSupport.create(replacementTextBinding, SWT.TOP | SWT.LEFT); bindButton(caseSensitiveButton, Literals.CRITERIA__SENSITIVE_CASE); } private Binding bindTextWidget(Text textWidget, EStructuralFeature feature) { IObservableValue target = WidgetProperties.text(SWT.Modify).observe(textWidget); IObservableValue model = EMFEditObservables.observeDetailValue(Realm.getDefault(), editingDomain, writableValue, feature); return bindingContext.bindValue(target, model, null, null); } private Binding bindComboViewer(ComboViewer comboViewer, EStructuralFeature feature) { // IObservableValue target = ViewersObservables.observeSingleSelection(comboViewer); IObservableValue model = EMFEditObservables.observeDetailValue(Realm.getDefault(), editingDomain, writableValue, feature); return bindingContext.bindValue(target, model, null, null); } private Binding bindButton(Button button, EStructuralFeature feature) { // IObservableValue target = WidgetProperties.selection().observe(button); IObservableValue model = EMFEditObservables.observeDetailValue(Realm.getDefault(), editingDomain, writableValue, feature); return bindingContext.bindValue(target, model, null, null); } /** * {@inheritDoc} */ @Override public void createContents(final Composite parent) { toolkit = managedForm.getToolkit(); parent.setLayout(new FillLayout()); // Section section = toolkit.createSection(parent, ExpandableComposite.EXPANDED | ExpandableComposite.TITLE_BAR); section.setText("Criteria Details"); // Composite composite = toolkit.createComposite(section, SWT.NONE); section.setClient(composite); composite.setLayout(new GridLayout(2, false)); createFeatureText(composite); createOperatorComboViewer(composite); createSearchedText(composite); createReplacementText(composite); createSensitiveButton(composite); initDataBindings(); } private void createSensitiveButton(Composite composite) { createLabel(composite, "Case Sensitive"); caseSensitiveButton = toolkit.createButton(composite, "", SWT.CHECK); caseSensitiveButton.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false, 1, 1)); } private void createReplacementText(Composite composite) { replacementTextWidget = createText("Replacement", composite); } private void createSearchedText(Composite composite) { searchedTextWidget = createText("Searched Text", composite); } private Text createText(String labelText, Composite composite) { createLabel(composite, labelText); Text text = toolkit.createText(composite, "", SWT.BORDER); text.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1)); return text; } private void createOperatorComboViewer(Composite composite) { operatorComboViewer = createComboViewer("Operator", composite, Operator.values()); } private void createFeatureText(Composite composite) { featureTextWidget = createText("Feature", composite); } private Label createLabel(Composite parent, String labelText) { return toolkit.createLabel(parent, labelText); } private ComboViewer createComboViewer(String labelText, Composite parent, Object input) { createLabel(parent, labelText); ComboViewer comboViewer = new ComboViewer(parent, SWT.READ_ONLY); Combo combo = comboViewer.getCombo(); combo.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1)); toolkit.paintBordersFor(combo); comboViewer.setLabelProvider(new LabelProvider()); comboViewer.setContentProvider(new ArrayContentProvider()); comboViewer.setInput(input); return comboViewer; } }