org.eclipse.triquetrum.workflow.editor.features.TriqDefaultDeleteFeature.java Source code

Introduction

Here is the source code for org.eclipse.triquetrum.workflow.editor.features.TriqDefaultDeleteFeature.java

Source

/*******************************************************************************
 * Copyright (c) 2017 iSencia Belgium NV.
 * 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:
 *    Erwin De Ley - initial API and implementation and/or initial documentation
 *******************************************************************************/
package org.eclipse.triquetrum.workflow.editor.features;

import java.text.MessageFormat;

import org.eclipse.graphiti.features.IFeatureProvider;
import org.eclipse.graphiti.features.context.IDeleteContext;
import org.eclipse.graphiti.features.context.IMultiDeleteInfo;
import org.eclipse.graphiti.ui.features.DefaultDeleteFeature;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialogWithToggle;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.triquetrum.workflow.editor.Messages;
import org.eclipse.triquetrum.workflow.editor.TriqEditorPlugin;
import org.eclipse.ui.PlatformUI;

public class TriqDefaultDeleteFeature extends DefaultDeleteFeature {

    public static final String DELETE_CONFIRMATION_PREFNAME = "";
    public static final boolean DELETE_CONFIRMATION_DEFVALUE = true;

    public TriqDefaultDeleteFeature(IFeatureProvider fp) {
        super(fp);
    }

    /**
     * Shows a dialog which asks the user to confirm the deletion of one or more elements.
     * (if the preference is not set to not show the confirmation dialog)
     * 
     * @param context
     *            delete context
     * @return <code>true</code> to delete element(s); <code>false</code> to
     *         cancel delete
     */
    @Override
    protected boolean getUserDecision(IDeleteContext context) {
        IPreferenceStore store = TriqEditorPlugin.getDefault().getPreferenceStore();
        if (!store.getBoolean(DELETE_CONFIRMATION_PREFNAME)) {
            return true;
        } else {
            String msg;
            IMultiDeleteInfo multiDeleteInfo = context.getMultiDeleteInfo();
            if (multiDeleteInfo != null) {
                msg = MessageFormat.format(Messages.DeleteFeature_2_xmsg, multiDeleteInfo.getNumber());
            } else {
                String deleteName = getDeleteName(context);
                if (deleteName != null && deleteName.length() > 0) {
                    msg = MessageFormat.format(Messages.DeleteFeature_3_xmsg, deleteName);
                } else {
                    msg = Messages.DeleteFeature_4_xmsg;
                }
            }
            MessageDialogWithToggle toggleDialog = MessageDialogWithToggle.openYesNoQuestion(
                    PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(), Messages.DeleteFeature_5_xfld,
                    msg, Messages.DeleteFeature_6_xtgl, false, null, null);

            boolean deleteIsConfirmed = toggleDialog.getReturnCode() == IDialogConstants.YES_ID;
            if (deleteIsConfirmed) {
                store.setValue(DELETE_CONFIRMATION_PREFNAME, !toggleDialog.getToggleState());
            }
            return deleteIsConfirmed;
        }
    }
}