view flys-client/src/main/java/de/intevation/flys/client/client/ui/map/DrawControl.java @ 4241:49cb65d5932d

Improved the historical discharge calculation. The calculation now creates new HistoricalWQKms (new subclass of WQKms). Those WQKms are used to create new facets from (new) type 'HistoricalDischargeCurveFacet'. The chart generator is improved to support those facets.
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 24 Oct 2012 14:34:35 +0200
parents cf0f906921de
children 8af500d62098
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package de.intevation.flys.client.client.ui.map;

import java.util.LinkedHashMap;

import com.google.gwt.core.client.GWT;

import com.smartgwt.client.types.SelectionType;
import com.smartgwt.client.widgets.ImgButton;
import com.smartgwt.client.widgets.events.ClickEvent;
import com.smartgwt.client.widgets.events.ClickHandler;
import com.smartgwt.client.widgets.form.DynamicForm;
import com.smartgwt.client.widgets.form.fields.SelectItem;
import com.smartgwt.client.widgets.form.fields.FormItem;
import com.smartgwt.client.widgets.form.fields.events.ChangedEvent;
import com.smartgwt.client.widgets.form.fields.events.ChangedHandler;
import com.smartgwt.client.widgets.layout.HLayout;

import org.gwtopenmaps.openlayers.client.Map;
import org.gwtopenmaps.openlayers.client.Style;
import org.gwtopenmaps.openlayers.client.control.Control;
import org.gwtopenmaps.openlayers.client.control.DrawFeature;
import org.gwtopenmaps.openlayers.client.event.VectorFeatureAddedListener;
import org.gwtopenmaps.openlayers.client.event.VectorFeatureAddedListener.FeatureAddedEvent;
import org.gwtopenmaps.openlayers.client.feature.VectorFeature;
import org.gwtopenmaps.openlayers.client.handler.Handler;
import org.gwtopenmaps.openlayers.client.handler.PathHandler;
import org.gwtopenmaps.openlayers.client.handler.PolygonHandler;
import org.gwtopenmaps.openlayers.client.layer.Vector;
import org.gwtopenmaps.openlayers.client.util.Attributes;

import de.intevation.flys.client.client.FLYSConstants;
import de.intevation.flys.client.client.utils.EnableDisableCmd;


public class DrawControl extends HLayout implements VectorFeatureAddedListener {

    public static final String BARRIER_PIPE1    = "pipe1";
    public static final String BARRIER_PIPE2    = "pipe2";
    public static final String BARRIER_DITCH    = "ditch";
    public static final String BARRIER_DAM      = "dam";
    public static final String BARRIER_RINGDIKE = "ring_dike";

    public static final String BARRIER_PIPE1_VALUE    = "Rohr 1";
    public static final String BARRIER_PIPE2_VALUE    = "Rohr 2";
    public static final String BARRIER_DITCH_VALUE    = "Graben";
    public static final String BARRIER_DAM_VALUE      = "Damm";
    public static final String BARRIER_RINGDIKE_VALUE = "Ringdeich";

    public static final String FIELD_BARRIER_TYPE = "field_barrier_type";


    protected FLYSConstants MSG = GWT.create(FLYSConstants.class);

    protected EnableDisableCmd cmd;

    protected ImgButton   button;
    protected DynamicForm form;

    protected Map    map;
    protected Vector layer;

    protected Control control;


    public DrawControl(Map map, Vector layer, EnableDisableCmd cmd) {
        this.map   = map;
        this.layer = layer;
        this.cmd   = cmd;

        initialize();
    }


    protected void initialize() {
        setWidth(100);
        setMembersMargin(0);

        button = new ImgButton();

        String baseUrl = GWT.getHostPageBaseURL();
        button.setSrc(baseUrl + MSG.digitize());
        button.setActionType(SelectionType.CHECKBOX);
        button.setSize(20);
        button.setShowRollOver(false);
        button.setSelected(false);
        button.setTooltip(MSG.digitizeObjects());

        button.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent e) {
                if (button.isSelected()) {
                    cmd.enable();
                }
                else {
                    cmd.disable();
                }
            }
        });

        form = new DynamicForm();
        form.setWidth(100);
        form.setTitlePrefix("");
        form.setTitleSuffix("");

        LinkedHashMap<String, String> map = new LinkedHashMap<String, String>();
        map.put(BARRIER_PIPE1, MSG.getString(BARRIER_PIPE1));
        map.put(BARRIER_PIPE2, MSG.getString(BARRIER_PIPE2));
        map.put(BARRIER_DITCH, MSG.getString(BARRIER_DITCH));
        map.put(BARRIER_DAM, MSG.getString(BARRIER_DAM));
        map.put(BARRIER_RINGDIKE, MSG.getString(BARRIER_RINGDIKE));

        LinkedHashMap<String, String> ics = new LinkedHashMap<String, String>();
        ics.put(BARRIER_PIPE1, BARRIER_PIPE1);
        ics.put(BARRIER_PIPE2, BARRIER_PIPE2);
        ics.put(BARRIER_DITCH, BARRIER_DITCH);
        ics.put(BARRIER_DAM, BARRIER_DAM);
        ics.put(BARRIER_RINGDIKE, BARRIER_RINGDIKE);

        SelectItem box = new SelectItem(FIELD_BARRIER_TYPE);
        box.setTitle("");
        box.setWidth(100);
        box.setValueMap(map);
        box.setImageURLSuffix(".png");
        box.setValueIcons(ics);

        box.addChangedHandler(new ChangedHandler() {
            public void onChanged(ChangedEvent e) {
                setSelectedControl();
            }
        });

        form.setFields(box);

        addMember(button);
        addMember(form);

        layer.addVectorFeatureAddedListener(this);

        activate(false);
    }


    protected String getSelectedType() {
        return form.getValueAsString(FIELD_BARRIER_TYPE);
    }


    public void onFeatureAdded(FeatureAddedEvent evt) {
        setCurrentType(evt.getVectorFeature());
    }


    protected void setCurrentType(VectorFeature feature) {
        Attributes attrs = feature.getAttributes();
        String     type  = attrs.getAttributeAsString("typ");

        if (type == null || type.length() == 0) {
            type = getSelectedType();

            Style style = FloodMap.getStyle(type);
            if (style != null) {
                feature.setStyle(style);
            }

            if (type.equals(BARRIER_PIPE1)) {
                attrs.setAttribute("typ", BARRIER_PIPE1_VALUE);
            }
            else if (type.equals(BARRIER_PIPE2)) {
                attrs.setAttribute("typ", BARRIER_PIPE2_VALUE);
            }
            else if (type.equals(BARRIER_DAM)) {
                attrs.setAttribute("typ", BARRIER_DAM_VALUE);
            }
            else if (type.equals(BARRIER_DITCH)) {
                attrs.setAttribute("typ", BARRIER_DITCH_VALUE);
            }
            else if (type.equals(BARRIER_RINGDIKE)) {
                attrs.setAttribute("typ", BARRIER_RINGDIKE_VALUE);
            }

            layer.redraw();
        }
    }


    protected void removeControl() {
        if (control != null) {
            control.deactivate();
            map.removeControl(control);
        }
    }


    protected void setSelectedControl() {
        removeControl();

        String type = getSelectedType();

        if (type == null || type.length() == 0) {
            return;
        }

        if (type.equalsIgnoreCase(BARRIER_RINGDIKE)) {
            control = createDrawPolygonControl();
        }
        else {
            control = createDrawLineControl();
        }

        map.addControl(control);
        control.activate();
    }


    protected Control createDrawControl(Handler handler) {
        return new DrawFeature(layer, handler);
    }


    protected Control createDrawPolygonControl() {
        return createDrawControl(new PolygonHandler());
    }


    protected Control createDrawLineControl() {
        return createDrawControl(new PathHandler());
    }


    public void activate(boolean activate) {
        FormItem item = form.getField(FIELD_BARRIER_TYPE);

        if (activate) {
            button.select();
            item.enable();
            setSelectedControl();
        }
        else {
            removeControl();
            button.deselect();
            item.disable();
        }
    }
}
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