org.geowe.client.local.main.map.SimpleMapVerticalLegend.java Source code

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Here is the source code for org.geowe.client.local.main.map.SimpleMapVerticalLegend.java

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/*
 * #%L
 * GeoWE Project
 * %%
 * Copyright (C) 2015 - 2016 GeoWE.org
 * %%
 * This file is part of GeoWE.org.
 * 
 * GeoWE is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * GeoWE is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with GeoWE.  If not, see <http://www.gnu.org/licenses/>.
 * #L%
 */
package org.geowe.client.local.main.map;

import java.util.ArrayList;
import java.util.List;

import org.geowe.client.local.layermanager.LayerManagerWidget;
import org.geowe.client.local.messages.UIMessages;
import org.geowe.client.local.model.vector.VectorLayer;
import org.gwtopenmaps.openlayers.client.layer.Layer;

import com.google.gwt.dom.client.Style.BorderStyle;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Widget;

/**
 * A Simple vertical legend based on vector Layers style
 * 
 * @author rafa@geowe.org
 *
 */
public class SimpleMapVerticalLegend extends VerticalLegend {

    private List<Layer> layers;

    public SimpleMapVerticalLegend(LayerManagerWidget layerManager) {
        super();
        this.layers = layerManager.getLayerTree(LayerManagerWidget.VECTOR_TAB).getLayers();
        create();
    }

    @Override
    protected List<Widget> getData() {
        List<Widget> widgets = new ArrayList<Widget>();
        for (Layer layer : layers) {
            HorizontalPanel hpanel = new HorizontalPanel();
            hpanel.setSpacing(2);
            hpanel.add(getColorPanel(layer));
            hpanel.add(new Label(layer.getName()));

            widgets.add(hpanel);
        }
        return widgets;
    }

    @Override
    protected HTML getHeader() {
        return new HTML("<b>" + UIMessages.INSTANCE.mpLayersLabel() + "</b><hr><hr>");
    }

    private HorizontalPanel getColorPanel(Layer layer) {
        HorizontalPanel colorPanel = new HorizontalPanel();
        colorPanel.setSize("20px", "20px");
        colorPanel.getElement().getStyle().setBackgroundColor(getColor(layer, "fillColor"));
        colorPanel.setBorderWidth(2);
        colorPanel.getElement().getStyle().setBorderStyle(BorderStyle.SOLID);
        colorPanel.getElement().getStyle().setBorderColor(getColor(layer, "strokeColor"));
        return colorPanel;
    }

    private String getColor(Layer layer, String property) {
        String color = "#0F58BF";
        if ((((VectorLayer) layer).getStyle()) == null) {

            color = ((VectorLayer) layer).getStyleMap().getJSObject().getProperty("styles").getProperty("default")
                    .getProperty("defaultStyle").getPropertyAsString(property);
        } else {
            color = ((VectorLayer) layer).getStyle().getFillColor();
        }
        return color;
    }
}