source: josm/trunk/src/org/openstreetmap/josm/gui/io/TagSettingsPanel.java@ 2801

// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.gui.io;

import java.awt.BorderLayout;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.Map;

import javax.swing.JPanel;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.osm.Changeset;
import org.openstreetmap.josm.gui.tagging.TagEditorPanel;
import org.openstreetmap.josm.gui.tagging.TagModel;

public class TagSettingsPanel extends JPanel implements PropertyChangeListener, TableModelListener {
    static public final String UPLOAD_COMMENT_PROP = TagSettingsPanel.class.getName() + ".uploadComment";

    /** checkbox for selecting whether an atomic upload is to be used  */
    private TagEditorPanel pnlTagEditor;

    protected void build() {
        setLayout(new BorderLayout());
        add(pnlTagEditor = new TagEditorPanel(), BorderLayout.CENTER);
    }

    public TagSettingsPanel() {
        build();
        pnlTagEditor.getModel().addTableModelListener(this);
    }

    /**
     * Replies the default value for "created_by"
     *
     * @return the default value for "created_by"
     */
    protected String getDefaultCreatedBy() {
        Object ua = System.getProperties().get("http.agent");
        return(ua == null) ? "JOSM" : ua.toString();
    }

    public void setUploadComment(String comment) {
        if (comment == null) {
            comment = "";
        }
        comment  = comment.trim();
        String commentInTag = getUploadComment();
        if (comment.equals(commentInTag))
            return;

        if (comment.equals("")) {
            pnlTagEditor.getModel().delete("comment");
            return;
        }
        TagModel tag = pnlTagEditor.getModel().get("comment");
        if (tag == null) {
            tag = new TagModel("comment", comment);
            pnlTagEditor.getModel().add(tag);
        } else {
            pnlTagEditor.getModel().updateTagValue(tag, comment);
        }
    }

    protected String getUploadComment() {
        TagModel tag = pnlTagEditor.getModel().get("comment");
        if (tag == null) return null;
        return tag.getValue();
    }

    protected void initNewChangeset() {
        String currentComment = getUploadComment();
        pnlTagEditor.getModel().clear();
        if (currentComment != null) {
            pnlTagEditor.getModel().add("comment", currentComment);
        }
        pnlTagEditor.getModel().add("created_by", getDefaultCreatedBy());
    }

    protected void initFromExistingChangeset(Changeset cs) {
        String currentComment = getUploadComment();
        Map<String,String> tags = cs.getKeys();
        if (tags.get("comment") == null) {
            tags.put("comment", currentComment);
        }
        tags.put("created_by", getDefaultCreatedBy());
        pnlTagEditor.getModel().initFromTags(tags);
    }

    public void initFromChangeset(Changeset cs) {
        if (cs == null) {
            initNewChangeset();
        } else {
            initFromExistingChangeset(cs);
        }
    }

    /**
     * Replies the map with the current tags in the tag editor model.
     *
     * @return the map with the current tags in the tag editor model.
     */
    public Map<String,String> getTags() {
        return pnlTagEditor.getModel().getTags();
    }

    public void startUserInput() {
        pnlTagEditor.initAutoCompletion(Main.main.getEditLayer());
    }

    /* -------------------------------------------------------------------------- */
    /* Interface PropertyChangeListener                                           */
    /* -------------------------------------------------------------------------- */
    public void propertyChange(PropertyChangeEvent evt) {
        if (evt.getPropertyName().equals(ChangesetManagementPanel.SELECTED_CHANGESET_PROP)) {
            Changeset cs = (Changeset)evt.getNewValue();
            initFromChangeset(cs);
        } else if (evt.getPropertyName().equals(BasicUploadSettingsPanel.UPLOAD_COMMENT_PROP)) {
            String comment = (String)evt.getNewValue();
            setUploadComment(comment);
        }
    }

    /* -------------------------------------------------------------------------- */
    /* Interface TableChangeListener                                              */
    /* -------------------------------------------------------------------------- */
    public void tableChanged(TableModelEvent e) {
        String uploadComment = getUploadComment();
        firePropertyChange(UPLOAD_COMMENT_PROP, null, uploadComment);
    }
}