/*
 *  Copyright (C) 2006-2013  Ronald Blankendaal
 *
 *  This program 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */
package org.dbgl.gui;

import java.io.File;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.RowData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Dialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.apache.commons.lang3.StringUtils;
import org.dbgl.gui.BrowseButton.BrowseType;
import org.dbgl.gui.BrowseButton.CanonicalType;
import org.dbgl.model.NativeCommand;
import org.dbgl.model.conf.Settings;
import swing2swt.layout.BorderLayout;


public class EditNativeCommandDialog extends Dialog {

	private Text command;
	private Text parameters;
	private Text cwd;
	private Button waitFor;
	private int orderNr = -1;
	
	private Settings settings;
    
    protected Object result;
    protected Shell shell;


    public EditNativeCommandDialog(final Shell parent) {
        super(parent, SWT.NONE);
    }

    public void setCommand(final NativeCommand cmd) {
        this.result = cmd;
        this.orderNr = cmd.getOrderNr();
    }

    public Object open() {
        settings = Settings.getInstance();
        createContents();
        shell.open();
        shell.layout();
        Display display = getParent().getDisplay();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }
        return result;
    }

    protected void createContents() {
        shell = new Shell(getParent(), SWT.TITLE | SWT.CLOSE | SWT.BORDER | SWT.RESIZE | SWT.APPLICATION_MODAL);
        shell.setLayout(new BorderLayout(0, 0));
        shell.addControlListener(new SizeControlAdapter(shell, "nativecommanddialog"));
        if (result == null) {
            shell.setText(settings.msg("dialog.nativecommand.title.add"));
        } else {
            // meaning we are essentially editing an existing native command
            shell.setText(settings.msg("dialog.nativecommand.title.edit"));
        }

        final Composite composite = new Composite(shell, SWT.NONE);
        composite.setLayout(new GridLayout(3, false));

        final Label commandLabel = new Label(composite, SWT.NONE);
        commandLabel.setText(settings.msg("dialog.nativecommand.command"));
        command = new Text(composite, SWT.BORDER);
        command.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
        final BrowseButton cmdBrowseButton = new BrowseButton(composite, SWT.NONE);

        final Label parametersLabel = new Label(composite, SWT.NONE);
        parametersLabel.setText(settings.msg("dialog.nativecommand.parameters"));
        parameters = new Text(composite, SWT.BORDER);
        parameters.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1));

        final Label cwdLabel = new Label(composite, SWT.NONE);
        cwdLabel.setText(settings.msg("dialog.nativecommand.cwd"));
        cwd = new Text(composite, SWT.BORDER);
        cwd.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
        final BrowseButton cwdBrowseButton = new BrowseButton(composite, SWT.NONE);

        cmdBrowseButton.connect(shell, command, cwd, BrowseType.FILE, CanonicalType.NATIVE_EXE, false, null);
        cwdBrowseButton.connect(shell, cwd, null, BrowseType.DIR, CanonicalType.NATIVE_EXE, false, null);
        
        final Label waitLabel = new Label(composite, SWT.NONE);
        waitLabel.setText(settings.msg("dialog.nativecommand.waitfor"));
        waitFor = new Button(composite, SWT.CHECK);
        waitFor.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false, 2, 1));

        final Composite composite_1 = new Composite(shell, SWT.NONE);
        composite_1.setLayout(new RowLayout());
        composite_1.setLayoutData(BorderLayout.SOUTH);

        final Button okButton = new Button(composite_1, SWT.NONE);
        final RowData rowData = new RowData();
        rowData.width = 80;
        okButton.setLayoutData(rowData);
        shell.setDefaultButton(okButton);
        okButton.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(final SelectionEvent event) {
                if (!isValid()) {
                    return;
                }
                result = new NativeCommand(new File(command.getText()), parameters.getText(), new File(cwd.getText()), waitFor.getSelection(), orderNr);
                shell.close();
            }
        });
        okButton.setText(settings.msg("button.ok"));

        final Button cancelButton = new Button(composite_1, SWT.NONE);
        final RowData rowData_1 = new RowData();
        rowData_1.width = 80;
        cancelButton.setLayoutData(rowData_1);
        cancelButton.setText(settings.msg("button.cancel"));
        cancelButton.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(final SelectionEvent event) {
                result = null;
                shell.close();
            }
        });

        if (result == null) {
            // new native command, set default values
        } else {
            // meaning we are essentially editing an existing native command
            // so we need to set previous values
        	NativeCommand cmd = (NativeCommand)result;
            command.setText(cmd.getCommand().getPath());
            parameters.setText(cmd.getParameters());
            cwd.setText(cmd.getCwd().getPath());
            waitFor.setSelection(cmd.isWaitFor());
        }
        command.setFocus();
    }

    private boolean isValid() {
        GeneralPurposeDialogs.initErrorDialog();
        if (StringUtils.isBlank(command.getText())) {
            GeneralPurposeDialogs.addError(settings.msg("dialog.nativecommand.required.command"), command);
        } else if (StringUtils.isBlank(cwd.getText())) {
            GeneralPurposeDialogs.addError(settings.msg("dialog.nativecommand.required.cwd"), cwd);
        }
        return !GeneralPurposeDialogs.displayErrorDialog(shell);
    }
}
