org.geowe.client.local.layermanager.tool.export.ExportDataDialog.java Source code

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Here is the source code for org.geowe.client.local.layermanager.tool.export.ExportDataDialog.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.layermanager.tool.export;

import org.geowe.client.local.ImageProvider;
import org.geowe.client.local.messages.UIMessages;
import org.geowe.client.local.model.vector.VectorLayer;
import org.geowe.client.local.ui.KeyShortcutHandler;
import org.geowe.client.local.ui.ProjectionComboBox;
import org.geowe.client.local.ui.VectorFormatComboBox;

import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.logical.shared.SelectionEvent;
import com.google.gwt.event.logical.shared.SelectionHandler;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;
import com.sencha.gxt.cell.core.client.ButtonCell.IconAlign;
import com.sencha.gxt.widget.core.client.Dialog;
import com.sencha.gxt.widget.core.client.button.TextButton;
import com.sencha.gxt.widget.core.client.container.BoxLayoutContainer.BoxLayoutPack;

/**
 * 
 * @author geowe
 *
 */
public class ExportDataDialog extends Dialog {

    private TextButton downloadFileButton;
    private TextButton gitHubButton;

    private VectorFormatComboBox vectorFormatCombo;
    private ProjectionComboBox epsgCombo;

    private VectorLayer vectorLayer;

    public ExportDataDialog() {
        super();
        setPredefinedButtons(PredefinedButton.CLOSE);
        setButtonAlign(BoxLayoutPack.CENTER);
        setBodyStyleName("pad-text");
        getBody().addClassName("pad-text");
        setHideOnButtonClick(true);
        setResizable(false);
        setWidth(450);

        add(createPanel());
        addKeyShortcuts();
    }

    public VectorLayer getVectorLayer() {
        return vectorLayer;
    }

    public void setVectorLayer(VectorLayer vectorLayer) {
        this.vectorLayer = vectorLayer;

        setHeadingText(UIMessages.INSTANCE.exportDataToolDialogTitle(vectorLayer.getName()));
        epsgCombo.setValue(vectorLayer.getProjection().getProjectionCode());
    }

    public TextButton getDownloadFileButton() {
        return downloadFileButton;
    }

    public TextButton getGitHubButton() {
        return gitHubButton;
    }

    public VectorFormat getSelectedFormat() {
        return vectorFormatCombo.getValue();
    }

    public String getSelectedEpsg() {
        return epsgCombo.getValue();
    }

    private Widget createPanel() {
        String comboWidth = "150px";

        vectorFormatCombo = new VectorFormatComboBox(comboWidth, VectorFormat.getSupportedExportVectorFormat());
        vectorFormatCombo.addSelectionHandler(getVectorComboSelectionHandler());
        vectorFormatCombo.setValue(VectorFormat.GEO_JSON_FORMAT);
        epsgCombo = new ProjectionComboBox(comboWidth);

        downloadFileButton = new TextButton(UIMessages.INSTANCE.downloadfileText());
        downloadFileButton.setIcon(ImageProvider.INSTANCE.download32());
        downloadFileButton.setIconAlign(IconAlign.TOP);

        gitHubButton = new TextButton("GitHub");
        gitHubButton.setIcon(ImageProvider.INSTANCE.github32());
        gitHubButton.setIconAlign(IconAlign.TOP);

        HorizontalPanel horizontalGroup = new HorizontalPanel();
        horizontalGroup.getElement().getStyle().setBackgroundColor("#E0ECF8");
        horizontalGroup.setSpacing(10);

        VerticalPanel vPanel = new VerticalPanel();
        vPanel.setSpacing(5);
        vPanel.add(vectorFormatCombo);
        vPanel.add(epsgCombo);

        horizontalGroup.add(vPanel);

        horizontalGroup.add(downloadFileButton);
        horizontalGroup.add(gitHubButton);

        return horizontalGroup;
    }

    private SelectionHandler<VectorFormat> getVectorComboSelectionHandler() {
        return new SelectionHandler<VectorFormat>() {
            @Override
            public void onSelection(SelectionEvent<VectorFormat> event) {
                epsgCombo.enable();
            }
        };
    }

    private void addKeyShortcuts() {
        KeyShortcutHandler keyShortcut = new KeyShortcutHandler(getButton(PredefinedButton.OK), KeyCodes.KEY_ENTER);

        vectorFormatCombo.addKeyDownHandler(keyShortcut);
        epsgCombo.addKeyDownHandler(keyShortcut);
    }
}