ContextMenuChooseGeoW.java

package org.geogebra.web.web.gui;

import java.util.ArrayList;
import java.util.TreeSet;

import org.geogebra.common.awt.GPoint;
import org.geogebra.common.euclidian.EuclidianConstants;
import org.geogebra.common.euclidian.EuclidianView;
import org.geogebra.common.kernel.geos.FromMeta;
import org.geogebra.common.kernel.geos.GeoElement;
import org.geogebra.common.main.Localization;
import org.geogebra.common.util.debug.Log;
import org.geogebra.web.html5.main.AppW;

import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.EventListener;
import com.google.gwt.user.client.ui.MenuBar;
import com.google.gwt.user.client.ui.MenuItem;

public class ContextMenuChooseGeoW extends ContextMenuGeoElementW {

	/**
	 * 
	 */
	protected EuclidianView view;

	/**
	 * polygons/polyhedra parents of segments, polygons, ...
	 */
	private TreeSet<GeoElement> metas;

	private ArrayList<GeoElement> selectedGeos;
	private GPoint loc;
	private MenuBar selectAnotherMenu;
	private ArrayList<GeoElement> tmpAnotherMenuItemList;

	/**
	 * 
	 * @param app
	 *            application
	 * @param view
	 *            view
	 * @param selectedGeos
	 *            selected geos
	 * @param geos
	 *            geos
	 * @param invokerLocation
	 *            place to show
	 */
	public ContextMenuChooseGeoW(AppW app, EuclidianView view,
	        ArrayList<GeoElement> selectedGeos, ArrayList<GeoElement> geos,
			GPoint invokerLocation) {
		super(app, selectedGeos);

		// return if just one geo, or if first geos more than one
		if (geos.size() < 2 || selectedGeos.size() > 1) {
			justOneGeo = false;
			addOtherItems();
			return;
		}

		justOneGeo = true;

		// section to choose a geo
		// addSeparator();
		// addSelectAnotherMenu(view.getMode());

		this.loc = invokerLocation;
		this.selectedGeos = selectedGeos;
		this.setGeos(geos);
		this.view = view;

		GeoElement geoSelected = selectedGeos.get(0);

		// add geos
		metas = new TreeSet<GeoElement>();

		// first collect geos in tmp list
		addGeosToTmpAnotherMenuItemList(metas, geos, geoSelected);

		// if tmp list not empty
		if (!tmpAnotherMenuItemList.isEmpty()) {
			// add menu item
			addSelectAnotherMenu(view.getMode());
			for (GeoElement geo : tmpAnotherMenuItemList) {
				// add geos to submenu
				addGeo(geo);
			}
		}
		addOtherItems();
	}

	private void addGeosToTmpAnotherMenuItemList(TreeSet<GeoElement> metas,
			ArrayList<GeoElement> geos, GeoElement geoSelected) {
		tmpAnotherMenuItemList = new ArrayList<GeoElement>();

		for (GeoElement geo1 : geos) {
			// do not add xoy plane or selected geo
			if (geo1 != geoSelected && geo1 != app.getKernel().getXOYPlane()) {
				tmpAnotherMenuItemList.add(geo1);
			}

			if (geo1.getMetasLength() > 0) {
				for (GeoElement meta : ((FromMeta) geo1).getMetas()) {
					if (!metas.contains(meta)) {
						tmpAnotherMenuItemList.add(meta);
					}
				}
			}

		}

	}

	private class MyMouseOverListener implements EventListener {

		private GeoElement geo;

		public MyMouseOverListener(GeoElement geo) {
			this.geo = geo;
		}

		@Override
		public void onBrowserEvent(Event event) {
			view.getEuclidianController().doSingleHighlighting(geo);
			Log.debug(
					"view.getEuclidianController().doSingleHighlighting(geo) called");
		}

	}

	private void addGeo(GeoElement geo) {

		// prevent selection of xOy plane
		if (geo == app.getKernel().getXOYPlane()) {
			return;
		}

		GeoAction chooser = new GeoAction(geo);
		MenuItem mi = new MenuItem(getDescription(geo, false), true, chooser);
		DOM.setEventListener(mi.getElement(), new MyMouseOverListener(geo));
		DOM.sinkEvents(mi.getElement(), Event.ONMOUSEOVER);

		selectAnotherMenu.addItem(mi);
		metas.add(geo);

	}

	private class GeoAction implements Command {

		private GeoElement geo;

		public GeoAction(GeoElement geo) {
			this.geo = geo;
		}

		@Override
		public void execute() {
			geoActionCmd(this.geo, selectedGeos, getGeos(), view, loc);
		}

	}

	private void addSelectAnotherMenu(int mode) {
		selectAnotherMenu = new MenuBar(true);
		MenuItem selectAnotherMenuItem;
		Localization l10n = app.getLocalization();
		if (mode == EuclidianConstants.MODE_MOVE) {
			selectAnotherMenuItem = new MenuItem(l10n.getMenu("SelectAnother"),
			        selectAnotherMenu);
		} else {
			selectAnotherMenuItem = new MenuItem(l10n.getMenu("PerformToolOn"),
			        selectAnotherMenu);
		}
		selectAnotherMenuItem.addStyleName("mi_no_image");
		wrappedPopup.addItem(selectAnotherMenuItem);
	}
}