org.bonitasoft.studio.properties.form.sections.actions.contributions.WidgetModifierContribution.java Source code

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Here is the source code for org.bonitasoft.studio.properties.form.sections.actions.contributions.WidgetModifierContribution.java

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/**
 * Copyright (C) 2009-2012 BonitaSoft S.A.
 * BonitaSoft, 32 rue Gustave Eiffel - 38000 Grenoble
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2.0 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.bonitasoft.studio.properties.form.sections.actions.contributions;

import java.util.Collection;

import org.bonitasoft.studio.common.ExpressionConstants;
import org.bonitasoft.studio.common.emf.tools.WidgetModifiersSwitch;
import org.bonitasoft.studio.common.properties.ExtensibleGridPropertySection;
import org.bonitasoft.studio.common.properties.IExtensibleGridPropertySectionContribution;
import org.bonitasoft.studio.form.properties.i18n.Messages;
import org.bonitasoft.studio.model.expression.Expression;
import org.bonitasoft.studio.model.expression.ExpressionPackage;
import org.bonitasoft.studio.model.expression.Operation;
import org.bonitasoft.studio.model.form.FormPackage;
import org.bonitasoft.studio.model.form.TextFormField;
import org.bonitasoft.studio.model.form.Widget;
import org.bonitasoft.studio.pics.Pics;
import org.bonitasoft.studio.pics.PicsConstants;
import org.eclipse.emf.databinding.EMFDataBindingContext;
import org.eclipse.emf.databinding.edit.EMFEditObservables;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.edit.command.SetCommand;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.jface.databinding.viewers.ViewersObservables;
import org.eclipse.jface.fieldassist.ControlDecoration;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ComboViewer;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.ViewerSorter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetWidgetFactory;

/**
 * 
 * @author Romain Bioteau
 *
 */
public class WidgetModifierContribution
        implements IExtensibleGridPropertySectionContribution, ISelectionChangedListener {

    protected TransactionalEditingDomain editingDomain;
    protected Widget widget;
    protected EMFDataBindingContext dataBindingContext;

    public void createControl(Composite composite, TabbedPropertySheetWidgetFactory widgetFactory,
            ExtensibleGridPropertySection extensibleGridPropertySection) {
        dataBindingContext = new EMFDataBindingContext();
        composite.setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create());
        composite.setLayout(GridLayoutFactory.fillDefaults().numColumns(1).create());
        final ComboViewer modifiersCombo = new ComboViewer(composite, SWT.READ_ONLY | SWT.BORDER);
        modifiersCombo.getControl().setLayoutData(GridDataFactory.fillDefaults().indent(5, 0).create());
        modifiersCombo.setLabelProvider(new LabelProvider());
        modifiersCombo.setContentProvider(new ArrayContentProvider());
        modifiersCombo.setSorter(new ViewerSorter());
        modifiersCombo.setInput(getAvailableModifiersFor(widget));
        modifiersCombo.addSelectionChangedListener(this);

        final ControlDecoration deco = new ControlDecoration(modifiersCombo.getControl(), SWT.LEFT);
        deco.setDescriptionText(Messages.modifierDescription);
        deco.setImage(Pics.getImage(PicsConstants.hint));
        deco.setMarginWidth(2);
        deco.setShowOnlyOnFocus(false);

        dataBindingContext.bindValue(ViewersObservables.observeSingleSelection(modifiersCombo), EMFEditObservables
                .observeValue(editingDomain, widget, FormPackage.Literals.WIDGET__RETURN_TYPE_MODIFIER));
    }

    private Collection<String> getAvailableModifiersFor(Widget widget) {
        final WidgetModifiersSwitch modifierSwitch = new WidgetModifiersSwitch();
        return modifierSwitch.doSwitch(widget);
    }

    public void dispose() {
        if (dataBindingContext != null) {
            dataBindingContext.dispose();
        }
    }

    public String getLabel() {
        return Messages.fieldModifier;
    }

    public boolean isRelevantFor(EObject eObject) {
        return eObject instanceof TextFormField;
    }

    public void refresh() {
    }

    public void setEObject(EObject object) {
        widget = (Widget) object;
    }

    public void setEditingDomain(TransactionalEditingDomain editingDomain) {
        this.editingDomain = editingDomain;
    }

    public void setSelection(ISelection selection) {

    }

    public void selectionChanged(SelectionChangedEvent event) {
        String type = (String) ((IStructuredSelection) event.getSelection()).getFirstElement();
        if (widget != null) {
            Operation operation = widget.getAction();
            if (operation != null) {
                final Expression exp = operation.getRightOperand();
                if (exp != null && exp.getContent() != null && !exp.getContent().isEmpty()
                        && ExpressionConstants.FORM_FIELD_TYPE.equals(exp.getType())) {
                    editingDomain.getCommandStack().execute(SetCommand.create(editingDomain, exp,
                            ExpressionPackage.Literals.EXPRESSION__RETURN_TYPE, type));
                }
            }
        }
    }

}