| /******************************************************************************* |
| * Copyright (c) 2018 Agence spatiale canadienne / Canadian Space Agency |
| * 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: |
| * Pierre Allard, |
| * Regent L'Archeveque - initial API and implementation |
| * |
| * SPDX-License-Identifier: EPL-1.0 |
| * |
| *******************************************************************************/ |
| package org.eclipse.apogy.common.io.jinput.ui.composites; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.eclipse.apogy.common.emf.transaction.ApogyCommonTransactionFacade; |
| import org.eclipse.apogy.common.io.jinput.Activator; |
| import org.eclipse.apogy.common.io.jinput.ApogyCommonIOJInputFacade; |
| import org.eclipse.apogy.common.io.jinput.ApogyCommonIOJInputPackage; |
| import org.eclipse.apogy.common.io.jinput.EComponentQualifier; |
| import org.eclipse.core.databinding.DataBindingContext; |
| import org.eclipse.core.databinding.UpdateValueStrategy; |
| import org.eclipse.core.databinding.conversion.Converter; |
| import org.eclipse.core.databinding.observable.value.IObservableValue; |
| import org.eclipse.emf.databinding.EMFProperties; |
| import org.eclipse.jface.databinding.swt.WidgetProperties; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.events.DisposeEvent; |
| import org.eclipse.swt.events.DisposeListener; |
| import org.eclipse.swt.events.FocusAdapter; |
| import org.eclipse.swt.events.FocusEvent; |
| import org.eclipse.swt.events.FocusListener; |
| import org.eclipse.swt.events.MouseAdapter; |
| import org.eclipse.swt.events.MouseEvent; |
| import org.eclipse.swt.graphics.Color; |
| 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.Event; |
| import org.eclipse.swt.widgets.Label; |
| import org.eclipse.swt.widgets.Listener; |
| import org.eclipse.swt.widgets.Text; |
| |
| public class AutomaticControllerSelectionComposite extends Composite { |
| |
| final String CLICK_PROMPT = "Click here to bind the controller"; |
| |
| private final Text controllerText; |
| private final Text componentText; |
| |
| private boolean selectionStarted = false; |
| private Listener listener; |
| |
| private EComponentQualifier eComponentQualifier; |
| private String initialControllerName; |
| private String initialComponentName; |
| |
| private DataBindingContext m_bindingContext; |
| |
| /** |
| * Create the parentComposite. |
| * |
| * @param parent Reference to the parent parentComposite. |
| * @param style Composite style. |
| */ |
| public AutomaticControllerSelectionComposite(Composite parent, int style) { |
| super(parent, style); |
| setLayout(new GridLayout(2, false)); |
| addFocusListener(new FocusListener() { |
| |
| @Override |
| public void focusLost(FocusEvent e) { |
| if (AutomaticControllerSelectionComposite.this.selectionStarted) { |
| stopSelection(); |
| } |
| } |
| |
| @Override |
| public void focusGained(FocusEvent e) { |
| } |
| }); |
| |
| Label controllerLabel = new Label(this, SWT.None); |
| controllerLabel.setText("Controller : "); |
| controllerLabel.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1)); |
| |
| this.controllerText = new Text(this, SWT.BORDER); |
| this.controllerText.setText(this.CLICK_PROMPT); |
| this.controllerText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 1, 1)); |
| this.controllerText.addMouseListener(new MouseAdapter() { |
| @Override |
| public void mouseDown(MouseEvent e) { |
| if (!AutomaticControllerSelectionComposite.this.selectionStarted) { |
| startSelection(); |
| } |
| } |
| }); |
| this.controllerText.addFocusListener(new FocusAdapter() { |
| @Override |
| public void focusLost(FocusEvent e) { |
| if (AutomaticControllerSelectionComposite.this.selectionStarted) { |
| stopSelection(); |
| } |
| } |
| }); |
| |
| Label componentLabel = new Label(this, SWT.None); |
| componentLabel.setText("Component : "); |
| componentLabel.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1)); |
| |
| this.componentText = new Text(this, SWT.BORDER); |
| this.componentText.setText(this.CLICK_PROMPT); |
| this.componentText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 1, 1)); |
| this.componentText.addMouseListener(new MouseAdapter() { |
| @Override |
| public void mouseDown(MouseEvent e) { |
| if (!AutomaticControllerSelectionComposite.this.selectionStarted) { |
| startSelection(); |
| } |
| } |
| }); |
| this.componentText.addFocusListener(new FocusAdapter() { |
| @Override |
| public void focusLost(FocusEvent e) { |
| if (AutomaticControllerSelectionComposite.this.selectionStarted) { |
| stopSelection(); |
| } |
| } |
| }); |
| |
| // Dispose |
| addDisposeListener(new DisposeListener() { |
| @Override |
| public void widgetDisposed(DisposeEvent e) { |
| if (AutomaticControllerSelectionComposite.this.m_bindingContext != null) |
| AutomaticControllerSelectionComposite.this.m_bindingContext.dispose(); |
| } |
| }); |
| } |
| |
| /** |
| * Starts the controller selection. |
| */ |
| private void startSelection() { |
| if (!ApogyCommonIOJInputFacade.INSTANCE.isSelectingComponent()) { |
| /** Start the selection */ |
| this.selectionStarted = true; |
| if (this.eComponentQualifier != null) { |
| this.initialControllerName = this.eComponentQualifier.getEControllerName(); |
| this.initialComponentName = this.eComponentQualifier.getEComponentName(); |
| } |
| ApogyCommonIOJInputFacade.INSTANCE.startSelectComponent(this.eComponentQualifier); |
| } |
| this.controllerText.setBackground(getTextsBackgroundColor()); |
| this.componentText.setBackground(getTextsBackgroundColor()); |
| |
| /** Changes the traverse listener of the shell */ |
| List<Listener> listeners = Arrays.asList(getShell().getListeners(SWT.Traverse)); |
| for (Listener listener : listeners) { |
| getShell().removeListener(SWT.Traverse, listener); |
| } |
| getShell().addListener(SWT.Traverse, getListener()); |
| for (Listener listener : listeners) { |
| getShell().addListener(SWT.Traverse, listener); |
| } |
| } |
| |
| /** |
| * {@link Listener} that cancels the selection if the user presses escape and |
| * confirms the selection if the user presses enter |
| * |
| * @return {@link Listener} |
| */ |
| private Listener getListener() { |
| if (this.listener == null) { |
| this.listener = new Listener() { |
| @Override |
| public void handleEvent(Event event) { |
| if (event.detail == SWT.TRAVERSE_ESCAPE || event.detail == SWT.TRAVERSE_RETURN) { |
| stopSelection(); |
| if (event.detail == SWT.TRAVERSE_ESCAPE |
| && AutomaticControllerSelectionComposite.this.eComponentQualifier != null) { |
| if (ApogyCommonTransactionFacade.INSTANCE.getTransactionalEditingDomain( |
| AutomaticControllerSelectionComposite.this.eComponentQualifier) != null) { |
| ApogyCommonTransactionFacade.INSTANCE.basicSet( |
| AutomaticControllerSelectionComposite.this.eComponentQualifier, |
| ApogyCommonIOJInputPackage.Literals.ECOMPONENT_QUALIFIER__ECONTROLLER_NAME, |
| AutomaticControllerSelectionComposite.this.initialControllerName); |
| ApogyCommonTransactionFacade.INSTANCE.basicSet( |
| AutomaticControllerSelectionComposite.this.eComponentQualifier, |
| ApogyCommonIOJInputPackage.Literals.ECOMPONENT_QUALIFIER__ECOMPONENT_NAME, |
| AutomaticControllerSelectionComposite.this.initialComponentName); |
| } else { |
| AutomaticControllerSelectionComposite.this.eComponentQualifier.setEControllerName( |
| AutomaticControllerSelectionComposite.this.initialControllerName); |
| AutomaticControllerSelectionComposite.this.eComponentQualifier.setEComponentName( |
| AutomaticControllerSelectionComposite.this.initialComponentName); |
| } |
| |
| } |
| event.doit = false; |
| } |
| } |
| }; |
| } |
| return this.listener; |
| } |
| |
| /** |
| * Stops the controller selection. |
| */ |
| private void stopSelection() { |
| ApogyCommonIOJInputFacade.INSTANCE.stopSelectComponent(this.eComponentQualifier); |
| this.selectionStarted = false; |
| this.controllerText.setBackground(getTextsBackgroundColor()); |
| this.componentText.setBackground(getTextsBackgroundColor()); |
| newSelection(null); |
| getShell().removeListener(SWT.Traverse, getListener()); |
| } |
| |
| /** |
| * Binds the {@link EComponentQualifier} with the UI components. |
| * |
| * @param eComponentQualifier Reference to the {@link EComponentQualifier}. |
| */ |
| public void setEComponentQualifier(EComponentQualifier eComponentQualifier) { |
| if (this.m_bindingContext != null) { |
| this.m_bindingContext.dispose(); |
| } |
| this.eComponentQualifier = eComponentQualifier; |
| |
| if (eComponentQualifier != null) { |
| initDataBindingsCustom(); |
| |
| if (eComponentQualifier.getEControllerName() != null) { |
| this.controllerText.setText(eComponentQualifier.getEControllerName()); |
| } |
| if (eComponentQualifier.getEComponentName() != null) { |
| this.componentText.setText(eComponentQualifier.getEComponentName()); |
| } |
| } |
| this.controllerText.setBackground(getTextsBackgroundColor()); |
| this.componentText.setBackground(getTextsBackgroundColor()); |
| } |
| |
| protected void newSelection(ISelection selection) { |
| } |
| |
| /** |
| * Returns yellow if the selection is activated. Returns red is the |
| * {@link EComponentQualifier} is not valid. Returns red is the |
| * {@link EComponentQualifier} is valid. |
| * |
| * @return {@link Color} |
| */ |
| private Color getTextsBackgroundColor() { |
| if (this.selectionStarted) { |
| return Display.getCurrent().getSystemColor(SWT.COLOR_YELLOW); |
| } |
| if (Activator.getEControllerEnvironment().resolveEComponent(this.eComponentQualifier) != null) { |
| return Display.getCurrent().getSystemColor(SWT.COLOR_GREEN); |
| } else { |
| return Display.getCurrent().getSystemColor(SWT.COLOR_RED); |
| } |
| } |
| |
| protected DataBindingContext initDataBindingsCustom() { |
| this.m_bindingContext = new DataBindingContext(); |
| |
| @SuppressWarnings("unchecked") |
| IObservableValue<?> observeEComponentQualifierControllerName = EMFProperties |
| .value(ApogyCommonIOJInputPackage.Literals.ECOMPONENT_QUALIFIER__ECONTROLLER_NAME) |
| .observe(this.eComponentQualifier); |
| IObservableValue<?> observeControllerTextText = WidgetProperties.text().observe(this.controllerText); |
| IObservableValue<?> observeControllerTextBackground = WidgetProperties.background() |
| .observe(this.controllerText); |
| |
| /** Controller name binding */ |
| this.m_bindingContext.bindValue(observeControllerTextText, observeEComponentQualifierControllerName, |
| new UpdateValueStrategy(UpdateValueStrategy.POLICY_NEVER), |
| new UpdateValueStrategy().setConverter(new Converter(String.class, String.class) { |
| |
| @Override |
| public Object convert(Object fromObject) { |
| newSelection(null); |
| return fromObject == null ? AutomaticControllerSelectionComposite.this.CLICK_PROMPT |
| : fromObject; |
| } |
| })); |
| /** Controller background binding */ |
| this.m_bindingContext.bindValue(observeControllerTextBackground, observeEComponentQualifierControllerName, |
| new UpdateValueStrategy(UpdateValueStrategy.POLICY_NEVER), |
| new UpdateValueStrategy().setConverter(new Converter(String.class, Color.class) { |
| |
| @Override |
| public Object convert(Object fromObject) { |
| return getTextsBackgroundColor(); |
| } |
| })); |
| |
| @SuppressWarnings("unchecked") |
| IObservableValue<?> observeEComponentQualifierComponentName = EMFProperties |
| .value(ApogyCommonIOJInputPackage.Literals.ECOMPONENT_QUALIFIER__ECOMPONENT_NAME) |
| .observe(this.eComponentQualifier); |
| IObservableValue<?> observeComponentTextText = WidgetProperties.text().observe(this.componentText); |
| IObservableValue<?> observeComponentTextBackground = WidgetProperties.background().observe(this.controllerText); |
| |
| /** Component name binding */ |
| this.m_bindingContext.bindValue(observeComponentTextText, observeEComponentQualifierComponentName, |
| new UpdateValueStrategy(UpdateValueStrategy.POLICY_NEVER), |
| new UpdateValueStrategy().setConverter(new Converter(String.class, String.class) { |
| |
| @Override |
| public Object convert(Object fromObject) { |
| newSelection(null); |
| return fromObject == null ? AutomaticControllerSelectionComposite.this.CLICK_PROMPT |
| : fromObject; |
| } |
| })); |
| /** Component background binding */ |
| this.m_bindingContext.bindValue(observeComponentTextBackground, observeEComponentQualifierComponentName, |
| new UpdateValueStrategy(UpdateValueStrategy.POLICY_NEVER), |
| new UpdateValueStrategy().setConverter(new Converter(String.class, Color.class) { |
| |
| @Override |
| public Object convert(Object fromObject) { |
| return getTextsBackgroundColor(); |
| } |
| })); |
| |
| return this.m_bindingContext; |
| } |
| } |
