EDIT

/**

* Copyright (C) 2017 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.featuretree.e4;

import org.eclipse.jface.viewers.ISelectionChangedListener;

import org.eclipse.jface.viewers.TreeViewer;

import org.eclipse.swt.SWT;

import org.eclipse.swt.dnd.DND;

import org.eclipse.swt.dnd.DragSourceListener;

import org.eclipse.swt.dnd.DropTargetListener;

import org.eclipse.swt.dnd.Transfer;

import org.eclipse.swt.events.ModifyListener;

import org.eclipse.swt.events.SelectionListener;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Text;

import org.eclipse.swt.widgets.Tree;

import eu.etaxonomy.cdm.model.description.FeatureTree;

import eu.etaxonomy.taxeditor.featuretree.FeatureNodeTransfer;

import eu.etaxonomy.taxeditor.featuretree.FeatureTreeContentProvider;

import eu.etaxonomy.taxeditor.featuretree.FeatureTreeLabelProvider;

import eu.etaxonomy.taxeditor.l10n.Messages;

import eu.etaxonomy.taxeditor.model.ImageResources;

import eu.etaxonomy.taxeditor.preference.IPreferenceKeys;

import eu.etaxonomy.taxeditor.store.internal.TaxeditorStorePlugin;

/**

 * @author pplitzner

 * @since Jun 19, 2017

 *

 */

public class FeatureTreeEditorComposite extends Composite{

    private FeatureTree featureTree;

    private Label label_title;

    private Text text_title;

    private Button btnOpenFeatureTree;

    private TreeViewer viewer;

    private Button btnAdd;

    private Button btnRemove;

    private Button btnExportTree;

    private Composite composite_buttons;

    public FeatureTreeEditorComposite(Composite parent, int style) {

        super(parent, style);

        setLayout(new GridLayout(2, false));

        Composite composite_treeTitle = new Composite(this, SWT.NULL);

        composite_treeTitle.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true,

                false));

        GridLayout gl_composite_treeTitle = new GridLayout(2, false);

        gl_composite_treeTitle.marginWidth = 0;

        composite_treeTitle.setLayout(gl_composite_treeTitle);

        label_title = new Label(composite_treeTitle, SWT.NULL);

        label_title.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));

        label_title.setText(Messages.FeatureTreeEditorComposite_FEATURE_TREE);

        text_title = new Text(composite_treeTitle, SWT.BORDER);

        text_title.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));

        text_title.setEnabled(false);

        btnOpenFeatureTree = new Button(this, SWT.NONE);

        btnOpenFeatureTree.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false, 1, 1));

        btnOpenFeatureTree.setToolTipText(Messages.FeatureTreeEditorComposite_OPEN_TREE);

        btnOpenFeatureTree.setImage(ImageResources.getImage(ImageResources.BROWSE_ICON));

        viewer = new TreeViewer(this);

        Tree tree = viewer.getTree();

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

        viewer.getControl().setLayoutData(

                new GridData(SWT.FILL, SWT.FILL, true, true));

        composite_buttons = new Composite(this,

                SWT.NULL);

        composite_buttons.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false,

                false));

        composite_buttons.setLayout(new GridLayout());

        btnAdd = new Button(composite_buttons, SWT.PUSH);

        btnAdd.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false, 1, 1));

        btnAdd.setToolTipText(Messages.FeatureTreeEditorComposite_ADD_FEATURE);

        btnAdd.setImage(ImageResources.getImage(ImageResources.ADD_EDIT));

        btnRemove = new Button(composite_buttons, SWT.PUSH);

        btnRemove.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false, 1, 1));

        btnRemove.setToolTipText(Messages.FeatureTreeEditorComposite_REMOVE_FEATURE);

        btnRemove.setImage(ImageResources.getImage(ImageResources.TRASH_ICON));

        btnExportTree = new Button(composite_buttons, SWT.NONE);

        btnExportTree.setToolTipText("Export feature tree");

        btnExportTree.setImage(ImageResources.getImage(ImageResources.MOVE_ICON));

        btnExportTree.setVisible(TaxeditorStorePlugin.getDefault().getPreferenceStore().getBoolean(IPreferenceKeys.SHOW_EXPERIMENTAL_FEATURES));

        setButtonsEnabled(false);

    }

    public void init(DragSourceListener dragSourceListener,

            DropTargetListener dropTargetListener, ISelectionChangedListener viewerSelectionChangedListener,

            SelectionListener openFeatureTreeSelectionListener, SelectionListener addButtonSelectionListener, SelectionListener removeButtonSelectionListener, SelectionListener exportButtonSelectionListener) {

        viewer.setContentProvider(new FeatureTreeContentProvider());

        viewer.setLabelProvider(new FeatureTreeLabelProvider());

        int ops = DND.DROP_COPY | DND.DROP_MOVE;

        Transfer[] transfers = new Transfer[] { FeatureNodeTransfer

                .getInstance() };

        if(dragSourceListener!=null){

            viewer.addDragSupport(ops, transfers, dragSourceListener);

        }

        if(dropTargetListener!=null){

            viewer.addDropSupport(ops, transfers, dropTargetListener);

        }

        viewer.addSelectionChangedListener(viewerSelectionChangedListener);

        btnAdd.addSelectionListener(addButtonSelectionListener);

        btnRemove.addSelectionListener(removeButtonSelectionListener);

        btnExportTree.addSelectionListener(exportButtonSelectionListener);

        btnOpenFeatureTree.addSelectionListener(openFeatureTreeSelectionListener);

    }

    public void setSelectedTree(FeatureTree featureTree, ModifyListener modifyListener) {

        this.featureTree = featureTree;

        getViewer().setInput(featureTree);

        getText_title().removeModifyListener(modifyListener);

        getText_title().setText(featureTree.getTitleCache());

        getText_title().addModifyListener(modifyListener);

        getText_title().setEnabled(true);

        setButtonsEnabled(true);

        text_title.setEnabled(true);

    }

    private void setButtonsEnabled(boolean enabled){

        btnAdd.setEnabled(enabled);

        btnRemove.setEnabled(enabled);

        btnExportTree.setEnabled(enabled);

    }

    /**

     * @return the featureTree

     */

    public FeatureTree getFeatureTree() {

        return featureTree;

    }

    /**

     * @return the label_title

     */

    public Label getLabel_title() {

        return label_title;

    }

    /**

     * @return the text_title

     */

    public Text getText_title() {

        return text_title;

    }

    /**

     * @return the btnOpenFeatureTree

     */

    public Button getBtnOpenFeatureTree() {

        return btnOpenFeatureTree;

    }

    /**

     * @return the viewer

     */

    public TreeViewer getViewer() {

        return viewer;

    }

    /**

     * @return the button_add

     */

    public Button getBtnAdd() {

        return btnAdd;

    }

    /**

     * @return the button_remove

     */

    public Button getBtnRemove() {

        return btnRemove;

    }

    /**

     * @return the composite_buttons

     */

    public Composite getComposite_buttons() {

        return composite_buttons;

    }

    /**

     * @return the btnExportTree

     */

    public Button getBtnExportTree() {

        return btnExportTree;

    }

}