/*
 * SoapUI, Copyright (C) 2004-2016 SmartBear Software 
 *
 * Licensed under the EUPL, Version 1.1 or - as soon as they will be approved by the European Commission - subsequent 
 * versions of the EUPL (the "Licence"); 
 * You may not use this work except in compliance with the Licence. 
 * You may obtain a copy of the Licence at: 
 * 
 * http://ec.europa.eu/idabc/eupl 
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the Licence is 
 * distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 
 * express or implied. See the Licence for the specific language governing permissions and limitations 
 * under the Licence. 
 */

package com.eviware.soapui.support.swing;

import com.eviware.soapui.support.UISupport;
import org.fife.ui.rsyntaxtextarea.RSyntaxTextArea;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JPopupMenu;
import javax.swing.event.PopupMenuEvent;
import javax.swing.event.PopupMenuListener;
import java.awt.event.ActionEvent;

public final class RSyntaxAreaPopupMenu extends JPopupMenu implements PopupMenuListener {
    private final RSyntaxTextArea textComponent;
    private CutAction cutAction;
    private CopyAction copyAction;
    private PasteAction pasteAction;
    private ClearAction clearAction;
    private SelectAllAction selectAllAction;
    private UndoAction undoAction;
    private RedoAction redoAction;

    public static RSyntaxAreaPopupMenu add(RSyntaxTextArea textComponent) {
        // double-check
        if (textComponent.getComponentPopupMenu() instanceof RSyntaxAreaPopupMenu) {
            return (RSyntaxAreaPopupMenu) textComponent.getComponentPopupMenu();
        }

        RSyntaxAreaPopupMenu popupMenu = new RSyntaxAreaPopupMenu(textComponent);
        textComponent.setComponentPopupMenu(popupMenu);
        return popupMenu;
    }

    private RSyntaxAreaPopupMenu(RSyntaxTextArea textComponent) {
        super("Edit");
        this.textComponent = textComponent;

        undoAction = new UndoAction();
        add(undoAction);

        redoAction = new RedoAction();
        add(redoAction);

        addSeparator();

        cutAction = new CutAction();
        add(cutAction);
        copyAction = new CopyAction();
        add(copyAction);
        pasteAction = new PasteAction();
        add(pasteAction);
        clearAction = new ClearAction();
        add(clearAction);
        addSeparator();
        selectAllAction = new SelectAllAction();
        add(selectAllAction);

        addPopupMenuListener(this);
    }

    private final class CutAction extends AbstractAction {
        public CutAction() {
            super("Cut");
            putValue(Action.ACCELERATOR_KEY, UISupport.getKeyStroke("menu X"));
        }

        public void actionPerformed(ActionEvent e) {
            textComponent.cut();
        }
    }

    private final class CopyAction extends AbstractAction {
        public CopyAction() {
            super("Copy");
            putValue(Action.ACCELERATOR_KEY, UISupport.getKeyStroke("menu C"));
        }

        public void actionPerformed(ActionEvent e) {
            textComponent.copy();
        }
    }

    private final class PasteAction extends AbstractAction {
        public PasteAction() {
            super("Paste");
            putValue(Action.ACCELERATOR_KEY, UISupport.getKeyStroke("menu V"));
        }

        public void actionPerformed(ActionEvent e) {
            if (!textComponent.hasFocus()) {
                textComponent.requestFocusInWindow();
            }

            textComponent.paste();
        }
    }

    private final class ClearAction extends AbstractAction {
        public ClearAction() {
            super("Clear");
        }

        public void actionPerformed(ActionEvent e) {
            textComponent.setText("");
        }
    }

    private final class SelectAllAction extends AbstractAction {
        public SelectAllAction() {
            super("Select All");
            putValue(Action.ACCELERATOR_KEY, UISupport.getKeyStroke("menu A"));
        }

        public void actionPerformed(ActionEvent e) {
            if (!textComponent.hasFocus()) {
                textComponent.requestFocusInWindow();
            }
            textComponent.selectAll();
        }
    }

    private final class UndoAction extends AbstractAction {
        public UndoAction() {
            super("Undo");
            putValue(Action.ACCELERATOR_KEY, UISupport.getKeyStroke("menu Z"));
        }

        public void actionPerformed(ActionEvent e) {
            textComponent.undoLastAction();
        }
    }

    private final class RedoAction extends AbstractAction {
        public RedoAction() {
            super("Redo");
            putValue(Action.ACCELERATOR_KEY, UISupport.getKeyStroke("menu Y"));
        }

        public void actionPerformed(ActionEvent e) {
            textComponent.redoLastAction();
        }
    }

    public void popupMenuCanceled(PopupMenuEvent e) {
    }

    public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
    }

    public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
        // undoAction.setEnabled( textComponent.canUndo() );
        // redoAction.setEnabled( textComponent.canRedo() );

        cutAction.setEnabled(textComponent.getSelectionEnd() != textComponent.getSelectionStart());
        copyAction.setEnabled(cutAction.isEnabled());
        clearAction.setEnabled(cutAction.isEnabled());
        selectAllAction.setEnabled(textComponent.getText().length() > 0);
    }
}