FileOpenCommand.java

/**
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jledit.command.file;

import org.jledit.command.Command;
import org.jledit.command.undo.UndoContext;
import org.jledit.command.undo.UndoContextAware;
import org.jledit.ConsoleEditor;

import java.io.IOException;

public class FileOpenCommand implements Command, UndoContextAware {

    private final ConsoleEditor editor;
    private final String fileName;
    private UndoContext undoContext;

    public FileOpenCommand(ConsoleEditor editor, String fileName) {
        this.editor = editor;
        this.fileName = fileName;
    }

    @Override
    public void execute() {
        if (editor.isOpenEnabled()) {
            try {
                if (editor.isDirty()) {
                    boolean doOpen = editor.readBoolean("You have unsaved changes. Do you want to open a new file without saving? [y/N]", false);
                    if (!doOpen) {
                        return;
                    }
                }

                if (fileName == null || fileName.isEmpty()) {
                    String f = editor.readLine("Open:");
                    undoContext.clear();
                    editor.open(f);
                    editor.redrawText();
                    editor.redrawHeader();
                    editor.redrawFooter();
                } else {
                    undoContext.clear();
                    editor.open(fileName);
                }
            } catch (IOException e) {
                //noop
            }
        }
    }

    /**
     * Sets the {@link org.jledit.command.undo.UndoContext}.
     *
     * @param undoContext
     */
    @Override
    public void setUndoContext(UndoContext undoContext) {
        this.undoContext = undoContext;
    }
}