org.dita_op.dost.launcher.internal.ui.launchConfiguration.AddArgumentDialog.java Source code

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Here is the source code for org.dita_op.dost.launcher.internal.ui.launchConfiguration.AddArgumentDialog.java

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/**
 * Copyright (C) 2008 Claude Vedovini <http://vedovini.net/>.
 * 
 * This file is part of the DITA Open Platform <http://www.dita-op.org/>.
 * 
 * The DITA Open Platform 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 3 of the License, or (at your
 * option) any later version.
 * 
 * The DITA Open Platform 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
 * The DITA Open Platform. If not, see <http://www.gnu.org/licenses/>.
 */
package org.dita_op.dost.launcher.internal.ui.launchConfiguration;

import org.eclipse.debug.ui.StringVariableSelectionDialog;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
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.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class AddArgumentDialog extends Dialog {

    private String name;
    private String value;

    private Text nameText;
    private Text valueText;

    private final String wndTitle;
    private final String[] initialValues;

    public AddArgumentDialog(Shell shell, String wndTitle, String[] initialValues) {
        super(shell);
        this.wndTitle = wndTitle;
        this.initialValues = initialValues;
    }

    /**
     * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
     */
    @Override
    protected Control createDialogArea(Composite parent) {
        Composite comp = (Composite) super.createDialogArea(parent);
        ((GridLayout) comp.getLayout()).numColumns = 2;

        new Label(comp, SWT.NONE).setText(Messages.getString("AddArgumentDialog.nameText.label")); //$NON-NLS-1$

        nameText = new Text(comp, SWT.BORDER | SWT.SINGLE);
        nameText.setText(initialValues[0]);
        GridData gd = new GridData(GridData.FILL_HORIZONTAL);
        gd.widthHint = 300;
        nameText.setLayoutData(gd);
        nameText.addModifyListener(new ModifyListener() {
            public void modifyText(ModifyEvent e) {
                updateButtons();
            }
        });

        new Label(comp, SWT.NONE).setText(Messages.getString("AddArgumentDialog.valueText.label")); //$NON-NLS-1$

        valueText = new Text(comp, SWT.BORDER | SWT.SINGLE);
        valueText.setText(initialValues[1]);
        gd = new GridData(GridData.FILL_HORIZONTAL);
        gd.widthHint = 300;
        valueText.setLayoutData(gd);
        valueText.addModifyListener(new ModifyListener() {
            public void modifyText(ModifyEvent e) {
                updateButtons();
            }
        });

        Button variablesButton = new Button(comp, SWT.PUSH);
        variablesButton.setText(Messages.getString("AddArgumentDialog.variableButton.label")); //$NON-NLS-1$
        gd = new GridData(GridData.HORIZONTAL_ALIGN_END);
        gd.horizontalSpan = 2;
        int widthHint = convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
        gd.widthHint = Math.max(widthHint, variablesButton.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);
        variablesButton.setLayoutData(gd);

        variablesButton.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent se) {
                getVariable();
            }
        });

        return comp;
    }

    protected void getVariable() {
        StringVariableSelectionDialog variablesDialog = new StringVariableSelectionDialog(getShell());

        if (variablesDialog.open() == IDialogConstants.OK_ID) {
            String variable = variablesDialog.getVariableExpression();

            if (variable != null) {
                valueText.insert(variable.trim());
            }
        }
    }

    /**
     * Return the name/value pair entered in this dialog. If the cancel button
     * was hit, both will be <code>null</code>.
     */
    public String[] getNameValuePair() {
        return new String[] { name, value };
    }

    /**
     * @see org.eclipse.jface.dialogs.Dialog#buttonPressed(int)
     */
    @Override
    protected void buttonPressed(int buttonId) {
        if (buttonId == IDialogConstants.OK_ID) {
            name = nameText.getText().trim();
            value = valueText.getText();
        } else {
            name = null;
            value = null;
        }

        super.buttonPressed(buttonId);
    }

    /**
     * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell)
     */
    @Override
    protected void configureShell(Shell shell) {
        super.configureShell(shell);

        if (wndTitle != null) {
            shell.setText(wndTitle);
        }
    }

    /**
     * Enable the OK button if valid input
     */
    protected void updateButtons() {
        String name = nameText.getText().trim();
        String value = valueText.getText().trim();

        getButton(IDialogConstants.OK_ID).setEnabled((name.length() > 0) && (value.length() > 0));
    }

    /**
     * Enable the buttons on creation.
     * 
     * @see org.eclipse.jface.window.Window#create()
     */
    @Override
    public void create() {
        super.create();
        updateButtons();
    }
}