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/*******************************************************************************
* Copyright (c) 2015, 2016 Obeo.
* 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:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.eef.ide.ui.internal.widgets;
import com.google.common.base.Objects;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.eef.EEFConditionalStyle;
import org.eclipse.eef.EEFTextConditionalStyle;
import org.eclipse.eef.EEFTextDescription;
import org.eclipse.eef.EEFTextStyle;
import org.eclipse.eef.EEFWidgetDescription;
import org.eclipse.eef.EEFWidgetStyle;
import org.eclipse.eef.common.ui.api.EEFWidgetFactory;
import org.eclipse.eef.common.ui.api.IEEFFormContainer;
import org.eclipse.eef.core.api.EditingContextAdapter;
import org.eclipse.eef.core.api.controllers.EEFControllersFactory;
import org.eclipse.eef.core.api.controllers.IConsumer;
import org.eclipse.eef.core.api.controllers.IEEFTextController;
import org.eclipse.eef.core.api.controllers.IEEFWidgetController;
import org.eclipse.eef.core.api.utils.Eval;
import org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager;
import org.eclipse.sirius.common.interpreter.api.IInterpreter;
import org.eclipse.sirius.common.interpreter.api.IVariableManager;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.ui.forms.widgets.FormToolkit;
/**
* This class will be used in order to manager the lifecycle of a text.
*
* @author sbegaudeau
*/
public class EEFTextLifecycleManager extends AbstractEEFWidgetLifecycleManager {
/**
* The description.
*/
private EEFTextDescription description;
/**
* The text.
*/
private StyledText text;
/**
* The controller.
*/
private IEEFTextController controller;
/**
* The listener on the text.
*/
private ModifyListener modifyListener;
/**
* The constructor.
*
* @param description
* The description
* @param variableManager
* The variable manager
* @param interpreter
* The interpreter
* @param contextAdapter
* The editing context adapter
*/
public EEFTextLifecycleManager(EEFTextDescription description, IVariableManager variableManager, IInterpreter interpreter,
EditingContextAdapter contextAdapter) {
super(variableManager, interpreter, contextAdapter);
this.description = description;
}
/**
* {@inheritDoc}
*
* @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#createMainControl(org.eclipse.swt.widgets.Composite,
* org.eclipse.eef.common.ui.api.IEEFFormContainer)
*/
@Override
protected void createMainControl(Composite parent, IEEFFormContainer formContainer) {
EEFWidgetFactory widgetFactory = formContainer.getWidgetFactory();
FormData formData = new FormData();
formData.left = new FormAttachment(0, LABEL_WIDTH);
formData.right = new FormAttachment(100, 0);
// Get text area line count
int lineCount = description.getLineCount();
// Create text or text area according to the defined line count
if (lineCount > 1) {
this.text = widgetFactory.createStyledText(parent, SWT.H_SCROLL | SWT.V_SCROLL | SWT.WRAP);
formData.height = lineCount * text.getLineHeight();
} else {
this.text = widgetFactory.createStyledText(parent, SWT.NONE);
}
this.text.setData(FormToolkit.KEY_DRAW_BORDER, FormToolkit.TEXT_BORDER);
widgetFactory.paintBordersFor(parent);
this.text.setLayoutData(formData);
this.controller = new EEFControllersFactory().createTextController(this.description, this.variableManager, this.interpreter, this.contextAdapter);
}
/**
* {@inheritDoc}
*
* @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#getController()
*/
@Override
protected IEEFWidgetController getController() {
return this.controller;
}
/**
* {@inheritDoc}
*
* @see org.eclipse.eef.ide.ui.internal.widgets.AbstractEEFWidgetLifecycleManager#getWidgetDescription()
*/
@Override
protected EEFWidgetDescription getWidgetDescription() {
return this.description;
}
/**
* {@inheritDoc}
*
* @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#getWidgetStyle()
*/
@Override
protected EEFWidgetStyle getWidgetStyle() {
return this.description.getStyle();
}
/**
* {@inheritDoc}
*
* @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#getWidgetStyle(org.eclipse.eef.EEFConditionalStyle)
*/
@Override
protected EEFWidgetStyle getWidgetStyle(EEFConditionalStyle conditionalStyle) {
if (conditionalStyle instanceof EEFTextConditionalStyle) {
return ((EEFTextConditionalStyle) conditionalStyle).getStyle();
}
return null;
}
/**
* {@inheritDoc}
*
* @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#getWidgetConditionalStyles()
*/
@Override
protected List<EEFConditionalStyle> getWidgetConditionalStyles() {
List<EEFConditionalStyle> widgetConditionalStyles = new ArrayList<EEFConditionalStyle>();
widgetConditionalStyles.addAll(this.description.getConditionalStyles());
return widgetConditionalStyles;
}
/**
* {@inheritDoc}
*
* @see org.eclipse.eef.ide.ui.api.ILifecycleManager#aboutToBeShown()
*/
@Override
public void aboutToBeShown() {
super.aboutToBeShown();
this.modifyListener = new ModifyListener() {
@Override
public void modifyText(ModifyEvent event) {
if (!EEFTextLifecycleManager.this.container.isRenderingInProgress()) {
controller.updateValue(text.getText());
}
}
};
this.text.addModifyListener(this.modifyListener);
this.controller.onNewValue(new IConsumer<String>() {
@Override
public void apply(String value) {
if (!text.isDisposed()) {
if (!(text.getText() != null && text.getText().equals(value))) {
text.setText(Objects.firstNonNull(value, "")); //$NON-NLS-1$
}
// Set style
setStyle();
if (!text.isEnabled()) {
text.setEnabled(true);
}
}
}
});
}
/**
* Set the style.
*/
private void setStyle() {
EEFTextStyle textStyle = description.getStyle();
List<EEFTextConditionalStyle> conditionalStyles = description.getConditionalStyles();
if (conditionalStyles != null) {
for (EEFTextConditionalStyle eefTextConditionalStyle : conditionalStyles) {
String preconditionExpression = eefTextConditionalStyle.getPreconditionExpression();
Boolean preconditionValid = new Eval(interpreter, variableManager).get(preconditionExpression, Boolean.class);
if (preconditionValid != null && preconditionValid.booleanValue()) {
textStyle = eefTextConditionalStyle.getStyle();
break;
}
}
}
setTextStyle(textStyle, text);
}
/**
* {@inheritDoc}
*
* @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#getValidationControl()
*/
@Override
protected Control getValidationControl() {
return this.text;
}
/**
* {@inheritDoc}
*
* @see org.eclipse.eef.ide.ui.api.ILifecycleManager#aboutToBeHidden()
*/
@Override
public void aboutToBeHidden() {
super.aboutToBeHidden();
if (!text.isDisposed()) {
this.text.removeModifyListener(this.modifyListener);
}
this.controller.removeNewValueConsumer();
}
}
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