package de.intevation.flys.client.client.ui.chart;

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

import com.smartgwt.client.widgets.Button;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.ImgButton;
import com.smartgwt.client.widgets.Label;
import com.smartgwt.client.widgets.events.ClickEvent;
import com.smartgwt.client.widgets.events.ClickHandler;

import de.intevation.flys.client.client.FLYSConstants;
import de.intevation.flys.client.client.ui.ImgLink;
import de.intevation.flys.client.client.ui.Toolbar;


/**
 * Toolbar with buttons/icons to open datacage, switch to zoom mode, zoom out
 * etc.
 *
 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
 */
public class ChartToolbar extends Toolbar {

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

    public static final int PANEL_HEIGHT = 30;

    protected ChartOutputTab chartTab;

    protected Button datacage;

    protected Canvas downloadPNG;

    protected Canvas downloadPDF;

    protected Canvas downloadSVG;

    protected MousePositionPanel position;

    protected ZoomboxControl zoombox;

    protected ImgButton zoomToMaxExtent;

    protected ImgButton historyBack;

    protected ImgButton zoomOut;

    protected ImgButton chartProperties;

    protected Button addPoints;

    protected PanControl panControl;


    /** @param chartTab Output-Tab on which this toolbar is located. */
    public ChartToolbar(ChartOutputTab chartTab) {
        super(chartTab);

        this.chartTab   = chartTab;
        datacage        = new Button(MSG.databasket());
        position        = new MousePositionPanel(chartTab);
        zoombox         = new ZoomboxControl(chartTab, MSG.zoom_in());
        zoomToMaxExtent = new ImgButton();
        zoomOut         = new ImgButton();
        historyBack     = new ImgButton();
        panControl      = new PanControl(chartTab, MSG.pan());
        chartProperties = new ImgButton();
        addPoints       = new Button(MSG.points());

        addPoints.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                openPointWindow();
            }
        });

        datacage.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                GWT.log("Clicked 'datacage' button.");
                openDatacageWindow((ChartOutputTab) getOutputTab());
            }
        });

        String baseUrl = GWT.getHostPageBaseURL();

        downloadPNG = new ImgLink(
            baseUrl + MSG.downloadPNG(),
            chartTab.getExportUrl(-1, -1, "png"),
            20,
            20);

        downloadPDF = new ImgLink(
            baseUrl + MSG.downloadPDF(),
            chartTab.getExportUrl(1280, 1024, "pdf"),
            20,
            20);

        downloadSVG = new ImgLink(
            baseUrl + MSG.downloadSVG(),
            chartTab.getExportUrl(1280, 1024, "svg"),
            20,
            20);

        zoomToMaxExtent.setSrc(baseUrl + MSG.zoom_all());
        adjustImageButton(zoomToMaxExtent);
        zoomToMaxExtent.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                getChartOutputTab().resetRanges();
            }
        });

        zoomOut.setSrc(baseUrl + MSG.zoom_out());
        adjustImageButton(zoomOut);
        zoomOut.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                getChartOutputTab().zoomOut(10);
            }
        });

        historyBack.setSrc(baseUrl + MSG.zoom_back());
        adjustImageButton(historyBack);
        historyBack.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                getChartOutputTab().zoomOut();
            }
        });

        zoombox.addZoomHandler(chartTab);
        zoombox.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                panControl.deselect();
            }
        });

        panControl.addPanHandler(chartTab);
        panControl.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                zoombox.deselect();
            }
        });

        chartProperties.setSrc(baseUrl + MSG.properties_ico());
        adjustImageButton(chartProperties);
        chartProperties.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                openPropertiesEditor();
            }
        });


        initLayout();
    }

    /** Set width, height and other properties of an imagebutton. */
    public void adjustImageButton(ImgButton imgButton) {
        imgButton.setWidth(20);
        imgButton.setHeight(20);
        imgButton.setShowDown(false);
        imgButton.setShowRollOver(false);
        imgButton.setShowDisabled(false);
        imgButton.setShowDisabledIcon(true);
        imgButton.setShowDownIcon(false);
        imgButton.setShowFocusedIcon(false);
    }


    public ChartOutputTab getChartOutputTab() {
        return chartTab;
    }


    protected void initLayout() {
        setWidth100();
        setHeight(PANEL_HEIGHT);
        setMembersMargin(10);
        setPadding(5);
        setBorder("1px solid black");

        Label spacer = new Label();
        spacer.setWidth("*");
        datacage.setWidth("95px");
        position.setWidth("200px");

        addMember(datacage);
        addMember(downloadPNG);
        addMember(downloadPDF);
        addMember(downloadSVG);
        addMember(zoomToMaxExtent);
        addMember(historyBack);
        addMember(zoomOut);
        addMember(zoombox);
        addMember(panControl);
        addMember(chartProperties);
        addMember(addPoints);
        addMember(spacer);
        addMember(position);
    }

    /**
     * Open the chart property editor dialog.
     */
    protected void openPropertiesEditor() {
        ChartPropertiesEditor editor =
            new ChartPropertiesEditor(getChartOutputTab());
        editor.show();
    }


    /** Open editor for custom points. */
    protected void openPointWindow() {
        new ManualPointsEditor(chartTab.getView().getCollection(),
            this.chartTab).show();
    }
}
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