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 com.smartgwt.client.widgets.events.ResizedEvent;
import com.smartgwt.client.widgets.events.ResizedHandler;

import de.intevation.flys.client.client.FLYSConstants;
import de.intevation.flys.client.client.event.ZoomEvent;
import de.intevation.flys.client.client.event.ZoomHandler;
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 implements ZoomHandler {

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

    public static final int PANEL_HEIGHT = 30;

    protected ChartOutputTab chartTab;

    protected Button datacage;

    protected ImgLink downloadPNG;

    protected ImgLink downloadPDF;

    protected ImgLink downloadSVG;

    protected Canvas downloadCSV;

    protected MousePositionPanel position;

    protected ZoomboxControl zoombox;

    protected ImgButton zoomToMaxExtent;

    protected ImgButton historyBack;

    protected ImgButton zoomOut;

    protected ImgButton chartProperties;

    protected Button addPoints;

    protected Button addWSP;

    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());

        if (this.chartTab.getMode().getName().equals("cross_section")) {
            addWSP = new Button(MSG.addWSPButton());
            addWSP.setTooltip(MSG.addWSPTooltip());
            final ChartOutputTab finalChartTab = chartTab;
            addWSP.addClickHandler(new ClickHandler() {
                public void onClick(ClickEvent ce) {
                    new ManualWSPEditor(finalChartTab.getView().getCollection(),
                        finalChartTab, finalChartTab.getMode().getName()).show();
                    }});
        }

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

        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);
        downloadPNG.setTooltip(MSG.downloadPNGTooltip());

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

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

        downloadCSV = new ImgLink(
            baseUrl + MSG.downloadCSV(),
            chartTab.getExportUrl(-1, -1, "csv"),
            20,
            20);
        downloadCSV.setTooltip(MSG.downloadCSVTooltip());

        zoomToMaxExtent.setSrc(baseUrl + MSG.zoom_all());
        adjustImageButton(zoomToMaxExtent);
        zoomToMaxExtent.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                getChartOutputTab().resetRanges();
                // Relink the export buttons.
                onZoom(null);
            }
        });
        zoomToMaxExtent.setTooltip(MSG.zoomToMaxExtentTooltip());

        zoomOut.setSrc(baseUrl + MSG.zoom_out());
        adjustImageButton(zoomOut);
        zoomOut.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                getChartOutputTab().zoomOut(10);
                // Relink the export buttons.
                onZoom(null);
            }
        });
        zoomOut.setTooltip(MSG.zoomOutTooltip());

        historyBack.setSrc(baseUrl + MSG.zoom_back());
        adjustImageButton(historyBack);
        historyBack.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                getChartOutputTab().zoomOut();
                // Relink the export buttons.
                onZoom(null);
            }
        });
        historyBack.setTooltip(MSG.historyBackTooltip());

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

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

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

        initLayout();
        addResizedHandler(new ResizedHandler() {
            public void onResized(ResizedEvent e) {
                if (getVisibleWidth() < 740) {
                    setHeight(55);
                }
                else {
                    setHeight(40);
                }
            }
        });
    }

    /** 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.setShowRollOverIcon(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(downloadCSV);
        addMember(zoomToMaxExtent);
        addMember(historyBack);
        addMember(zoomOut);
        addMember(zoombox);
        addMember(panControl);
        addMember(chartProperties);
        addMember(addPoints);

        if (this.chartTab.getMode().getName().equals("cross_section")) {
            addMember(addWSP);
        }

        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() {
        if (this.chartTab.getMode().getName().equals("historical_discharge")) {
            new ManualDatePointsEditor(chartTab.getView().getCollection(),
                this.chartTab, this.chartTab.getMode().getName()).show();
        }
        else {
            new ManualPointsEditor(chartTab.getView().getCollection(),
                this.chartTab, this.chartTab.getMode().getName()).show();
        }
    }


    /**
     * Sets new sources to the export button/images, such that the
     * correct zoom values are included in the request when clicked.
     * @param evt ignored.
     */
    public void onZoom(ZoomEvent evt) {
        downloadPNG.setSource(chartTab.getExportUrl(-1, -1, "png"));
        downloadPDF.setSource(chartTab.getExportUrl(-1, -1, "pdf"));
        downloadSVG.setSource(chartTab.getExportUrl(-1, -1, "svg"));
    }

    public void deselectControls() {
        zoombox.deselect();
    }
}
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