package name.abuchen.portfolio.ui.handlers;

import java.io.File;

import javax.inject.Named;

import org.eclipse.e4.core.di.annotations.Execute;
import org.eclipse.e4.core.di.annotations.Optional;
import org.eclipse.e4.ui.model.application.MApplication;
import org.eclipse.e4.ui.model.application.ui.basic.MPart;
import org.eclipse.e4.ui.model.application.ui.basic.MPartStack;
import org.eclipse.e4.ui.services.IServiceConstants;
import org.eclipse.e4.ui.workbench.modeling.EModelService;
import org.eclipse.e4.ui.workbench.modeling.EPartService;
import org.eclipse.e4.ui.workbench.modeling.EPartService.PartState;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Shell;

import name.abuchen.portfolio.ui.Messages;
import name.abuchen.portfolio.ui.UIConstants;

public class OpenFileHandler
{
    @Execute
    public void execute(@Named(IServiceConstants.ACTIVE_SHELL) Shell shell,
                    @Optional @Named(IServiceConstants.ACTIVE_PART) MPart activePart, //
                    MApplication app, EPartService partService, EModelService modelService)
    {
        FileDialog dialog = new FileDialog(shell, SWT.OPEN);
        dialog.setFilterExtensions(new String[] { "*.xml;*.portfolio", "*.*" }); //$NON-NLS-1$ //$NON-NLS-2$
        dialog.setFilterNames(new String[] { Messages.LabelPortfolioPerformanceFile, Messages.LabelAllFiles });
        String fileSelected = dialog.open();

        if (fileSelected != null)
        {
            MPart part = partService.createPart(UIConstants.Part.PORTFOLIO);
            part.setLabel(new File(fileSelected).getName());
            part.setTooltip(fileSelected);
            part.getPersistedState().put(UIConstants.File.PERSISTED_STATE_KEY, fileSelected);

            if (activePart != null)
                activePart.getParent().getChildren().add(part);
            else
                ((MPartStack) modelService.find(UIConstants.PartStack.MAIN, app)).getChildren().add(part);

            part.setVisible(true);
            part.getParent().setVisible(true);
            partService.showPart(part, PartState.ACTIVATE);
        }
    }
}