EDIT

// $Id$

/**

* Copyright (C) 2015 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.taxeditor.view.sessions;

import java.util.List;

import net.sf.ehcache.Cache;

import net.sf.ehcache.Element;

import org.eclipse.jface.viewers.ITreeContentProvider;

import org.eclipse.jface.viewers.StyledCellLabelProvider;

import org.eclipse.jface.viewers.StyledString;

import org.eclipse.jface.viewers.TreeViewer;

import org.eclipse.jface.viewers.Viewer;

import org.eclipse.jface.viewers.ViewerCell;

import org.eclipse.swt.SWT;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Dialog;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.swt.widgets.Text;

import org.eclipse.swt.widgets.Tree;

import org.eclipse.wb.swt.SWTResourceManager;

import eu.etaxonomy.taxeditor.remoting.cache.CdmModelFieldPropertyFromClass;

import eu.etaxonomy.taxeditor.remoting.cache.CdmRemoteCacheManager;

import eu.etaxonomy.taxeditor.remoting.cache.EntityCacherDebugResult;

import eu.etaxonomy.taxeditor.remoting.cache.EntityCacherDebugResult.CdmEntityInfo;

import eu.etaxonomy.taxeditor.session.ICdmEntitySession;

import eu.etaxonomy.taxeditor.store.CdmStore;

/**

 * @author cmathew

 * @date 17 Feb 2015

 *

 */

public class InspectSessionsDialog extends Dialog {

    protected Object result;

    protected Shell shlInspectSessions;

    private Text text;

    private Label lblDebugInformation;

    private final Cache cdmlibModelCache;

    private final ICdmEntitySession activeSession;

    private TreeViewer treeViewer;

    /**

     * Create the dialog.

     * @param parent

     * @param style

     */

    public InspectSessionsDialog(Shell parent, int style) {

        super(parent, style);

        setText("SWT Dialog");

        cdmlibModelCache = CdmRemoteCacheManager.getInstance().getCdmModelGetMethodsCache();

        activeSession = CdmStore.getCurrentSessionManager().getActiveSession();

    }

    /**

     * Open the dialog.

     * @return the result

     */

    public Object open() {

        createContents();

        treeViewer.setContentProvider(new SessionsTreeContentProvider());

        treeViewer.setLabelProvider(new SessionsTreeLabelProvider());

        treeViewer.setInput(getRootElements());

        shlInspectSessions.open();

        shlInspectSessions.layout();

        Display display = getParent().getDisplay();

        while (!shlInspectSessions.isDisposed()) {

            if (!display.readAndDispatch()) {

                display.sleep();

            }

        }

        return result;

    }

    /**

     * Create contents of the dialog.

     */

    private void createContents() {

        shlInspectSessions = new Shell(getParent(), getStyle());

        shlInspectSessions.setSize(641, 529);

        shlInspectSessions.setText("Inspect Sessions");

        shlInspectSessions.setLayout(new GridLayout(1, false));

        TreeViewer treeViewer = new TreeViewer(shlInspectSessions, SWT.BORDER);

        Tree tree = treeViewer.getTree();

        tree.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));

        lblDebugInformation = new Label(shlInspectSessions, SWT.NONE);

        lblDebugInformation.setFont(SWTResourceManager.getFont("Ubuntu", 10, SWT.NORMAL));

        lblDebugInformation.setText("Debug Information :");

        text = new Text(shlInspectSessions, SWT.BORDER);

        text.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));

    }

    private CdmEntityInfo[] getRootElements() {

        EntityCacherDebugResult ecdr = activeSession.debug();

        return (CdmEntityInfo[]) ecdr.getRootElements().toArray();

    }

    class SessionsTreeContentProvider implements ITreeContentProvider {

        /* (non-Javadoc)

         * @see org.eclipse.jface.viewers.IContentProvider#dispose()

         */

        @Override

        public void dispose() {

        }

        /* (non-Javadoc)

         * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)

         */

        @Override

        public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {

        }

        /* (non-Javadoc)

         * @see org.eclipse.jface.viewers.ITreeContentProvider#getElements(java.lang.Object)

         */

        @Override

        public Object[] getElements(Object inputElement) {

            return (CdmEntityInfo[])inputElement;

        }

        /* (non-Javadoc)

         * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)

         */

        @Override

        public Object[] getChildren(Object parentElement) {

            List<CdmEntityInfo> children = ((CdmEntityInfo)parentElement).getChildren();

            return children.toArray();

        }

        /* (non-Javadoc)

         * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)

         */

        @Override

        public Object getParent(Object element) {

            CdmEntityInfo cei = (CdmEntityInfo)element;

            return cei.getParent();

        }

        /* (non-Javadoc)

         * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)

         */

        @Override

        public boolean hasChildren(Object element) {

            List<CdmEntityInfo> children = ((CdmEntityInfo)element).getChildren();

            if(children != null && !children.isEmpty()) {

                return true;

            } else {

                return false;

            }

        }

        public CdmModelFieldPropertyFromClass getFromCdmlibModelCache(String className) {

            Element e = cdmlibModelCache.get(className);

            if (e == null) {

                return null;

            } else {

                return (CdmModelFieldPropertyFromClass) e.getObjectValue();

            }

        }

    }

    class SessionsTreeLabelProvider extends StyledCellLabelProvider {

        @Override

        public void update(ViewerCell cell) {

            CdmEntityInfo cei = (CdmEntityInfo)cell.getElement();

            StyledString text = new StyledString();

            if(cei != null) {

                text.append(cei.getLabel());

            }

            cell.setText(text.toString());

            cell.setStyleRanges(text.getStyleRanges());

            super.update(cell);

        }

    }

}