Application: gvSIG desktop

package org.gvsig.expressionevaluator.swing.impl;

import java.awt.Point;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JMenu;

import javax.swing.JMenuItem;

import javax.swing.JPopupMenu;

import org.apache.commons.lang3.StringUtils;

import org.gvsig.expressionevaluator.Expression;

import org.gvsig.expressionevaluator.ExpressionEvaluatorLocator;

import org.gvsig.expressionevaluator.ExpressionEvaluatorManager;

import org.gvsig.expressionevaluator.History;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.i18n.I18nManager;

import org.gvsig.tools.swing.api.ToolsSwingLocator;

import org.gvsig.tools.swing.api.windowmanager.Dialog;

import org.gvsig.tools.swing.api.windowmanager.WindowManager;

import org.gvsig.tools.swing.api.windowmanager.WindowManager_v2;

import org.gvsig.tools.swing.icontheme.IconTheme;

/**

 *

 * @author jjdelcerro

 */

public abstract class HistoryController {

    private final JButton button;

    public HistoryController(JButton button) {

        this.button = button;

        if( this.button!=null ) {

            IconTheme iconTheme = ToolsSwingLocator.getIconThemeManager().getCurrent();

            this.button.setIcon(iconTheme.get("expressionbuilder-history"));

            this.button.addActionListener(new ActionListener() {

                @Override

                public void actionPerformed(ActionEvent e) {

                    doHistory();

                }

            });

        }

    }

    public abstract void updateExpression(Expression expression);

    private void doHistory() {

        JPopupMenu popup = createMenu().getPopupMenu();

        Point p = this.button.getLocationOnScreen();

        popup.show(this.button, 0, this.button.getHeight());

    }

    public JMenu createMenu() {

        I18nManager i18n = ToolsLocator.getI18nManager();

        ExpressionEvaluatorManager theManager = ExpressionEvaluatorLocator.getManager();

        JMenu menu = new JMenu(i18n.getTranslation("_History"));

        History history = theManager.getHistory();

        if( !history.isEmpty() ) {

            for (Expression expression : history) {

                menu.add(createHistoryMenuItem(expression));

            }

            menu.addSeparator();

        }

        JMenuItem showAllHistory = new JMenuItem(i18n.getTranslation("_Show_all_history"));

        showAllHistory.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                doShowHistoryDialog();

            }

        });

        menu.add(showAllHistory);

        return menu;

    }

    private JMenuItem createHistoryMenuItem(final Expression expression) {

        JMenuItem item = new JMenuItem(StringUtils.abbreviate(expression.getPhrase(), 45));

        item.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                updateExpression(expression);

            }

        });

        return item;

    }

    private void doShowHistoryDialog() {

        WindowManager_v2 winManager = (WindowManager_v2) ToolsSwingLocator.getWindowManager();

        final DefaultHistoryPanel panel = new DefaultHistoryPanel();

        final Dialog dialog = winManager.createDialog(

                panel,

                "History",

                null, 

                WindowManager_v2.BUTTONS_OK_CANCEL

        );

        dialog.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                if( dialog.getAction()!=WindowManager_v2.BUTTON_OK ) {

                    return;

                }

                updateExpression(panel.getExpression());

            }

        });

        dialog.show(WindowManager.MODE.DIALOG);

    }

}