com.aptana.browser.CustomSizeDialog.java Source code

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Here is the source code for com.aptana.browser.CustomSizeDialog.java

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/**
 * Aptana Studio
 * Copyright (c) 2005-2011 by Appcelerator, Inc. All Rights Reserved.
 * Licensed under the terms of the GNU Public License (GPL) v3 (with exceptions).
 * Please see the license.html included with this distribution for details.
 * Any modifications to this file must keep this entire header intact.
 */
// $codepro.audit.disable exceptionUsage.exceptionCreation

package com.aptana.browser;

import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.TitleAreaDialog;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
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;

/**
 * @author Michael Xia
 */
/* package */class CustomSizeDialog extends TitleAreaDialog {

    private Text fWidthText;
    private Text fHeightText;

    int fWidth;
    int fHeight;

    protected CustomSizeDialog(Shell parentShell) {
        super(parentShell);
        setHelpAvailable(false);
    }

    @Override
    protected void configureShell(Shell newShell) {
        super.configureShell(newShell);
        newShell.setText(Messages.WebBrowserViewer_CustomSize_Title);
    }

    @Override
    protected Control createContents(Composite parent) {
        Control control = super.createContents(parent);
        validate();
        return control;
    }

    @Override
    protected Control createDialogArea(Composite parent) {
        Composite main = new Composite(parent, SWT.NONE);
        main.setLayout(GridLayoutFactory.swtDefaults().numColumns(2).create());
        main.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).create());

        (new Label(main, SWT.NONE)).setText(Messages.WebBrowserViewer_LBL_Width);
        fWidthText = new Text(main, SWT.BORDER | SWT.SINGLE);
        fWidthText.setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create());
        ModifyListener listener = new ModifyListener() {

            public void modifyText(ModifyEvent e) {
                validate();
            }
        };
        fWidthText.addModifyListener(listener);

        (new Label(main, SWT.NONE)).setText(Messages.WebBrowserViewer_LBL_Height);
        fHeightText = new Text(main, SWT.BORDER | SWT.SINGLE);
        fHeightText.setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create());
        fHeightText.addModifyListener(listener);

        setTitle(Messages.WebBrowserViewer_CustomSize_Title);
        setMessage(Messages.WebBrowserViewer_CustomSize_Message);

        return main;
    }

    @Override
    protected void okPressed() {
        fWidth = Integer.parseInt(fWidthText.getText());
        fHeight = Integer.parseInt(fHeightText.getText());
        super.okPressed();
    }

    private void validate() {
        String message = null;
        // checks the width first
        String text = fWidthText.getText();
        if (text.trim().length() == 0) {
            message = Messages.WebBrowserViewer_ERR_InvalidWidth;
        } else {
            try {
                int width = Integer.parseInt(text);
                if (width <= 0) {
                    throw new NumberFormatException();
                }
            } catch (NumberFormatException e) {
                message = Messages.WebBrowserViewer_ERR_InvalidWidth;
            }
        }
        // then checks the height if width is valid
        if (message == null) {
            text = fHeightText.getText();
            if (text.trim().length() == 0) {
                message = Messages.WebBrowserViewer_ERR_InvalidHeight;
            } else {
                try {
                    int height = Integer.parseInt(text);
                    if (height <= 0) {
                        throw new NumberFormatException();
                    }
                } catch (NumberFormatException e) {
                    message = Messages.WebBrowserViewer_ERR_InvalidHeight;
                }
            }
        }
        setErrorMessage(message);
        getButton(IDialogConstants.OK_ID).setEnabled(message == null);
    }
}