org.eclipse.ui.internal.about.AboutSystemPage.java Source code

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Here is the source code for org.eclipse.ui.internal.about.AboutSystemPage.java

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/*******************************************************************************
 * Copyright (c) 2003, 2009 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.internal.about;

import java.io.File;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.swt.SWT;
import org.eclipse.swt.dnd.Clipboard;
import org.eclipse.swt.dnd.TextTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.ConfigurationInfo;
import org.eclipse.ui.internal.IWorkbenchHelpContextIds;
import org.eclipse.ui.internal.WorkbenchMessages;
import org.eclipse.ui.progress.WorkbenchJob;

/**
 * Displays system information about the eclipse application. The content of
 * what is displayed is selectable through the
 * <code>org.eclipse.ui.systemSummaryExtensions</code> extension point.
 */
public final class AboutSystemPage extends ProductInfoPage {

    // This id is used when the system page is opened in its own dialog
    private static final String ID = "productInfo.system"; //$NON-NLS-1$

    private final static int BROWSE_ERROR_LOG_BUTTON = IDialogConstants.CLIENT_ID;

    private final static int COPY_TO_CLIPBOARD_BUTTON = IDialogConstants.CLIENT_ID + 1;

    private Text text;

    public void createControl(Composite parent) {
        PlatformUI.getWorkbench().getHelpSystem().setHelp(parent, IWorkbenchHelpContextIds.SYSTEM_SUMMARY_DIALOG);

        Composite outer = createOuterComposite(parent);

        text = new Text(outer, SWT.MULTI | SWT.BORDER | SWT.READ_ONLY | SWT.V_SCROLL | SWT.NO_FOCUS | SWT.H_SCROLL);
        text.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND));
        GridData gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL);
        gridData.grabExcessVerticalSpace = true;
        gridData.grabExcessHorizontalSpace = true;
        gridData.heightHint = convertVerticalDLUsToPixels(300);
        gridData.widthHint = convertHorizontalDLUsToPixels(400);
        text.setLayoutData(gridData);
        text.setFont(JFaceResources.getTextFont());
        fetchConfigurationInfo(text);
        setControl(outer);
    }

    public void createPageButtons(Composite parent) {
        Button button = createButton(parent, BROWSE_ERROR_LOG_BUTTON,
                WorkbenchMessages.AboutSystemDialog_browseErrorLogName);
        String filename = Platform.getLogFileLocation().toOSString();
        button.setEnabled(new File(filename).exists());

        createButton(parent, COPY_TO_CLIPBOARD_BUTTON, WorkbenchMessages.AboutSystemDialog_copyToClipboardName);
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.ui.internal.about.ProductInfoPage#getId()
     */
    String getId() {
        return ID;
    }

    public void copyToClipboard() {
        if (text == null) {
            return;
        }

        Clipboard clipboard = null;
        try {
            clipboard = new Clipboard(text.getShell().getDisplay());
            String contents = text.getSelectionText();
            if (contents.length() == 0)
                contents = text.getText();
            clipboard.setContents(new Object[] { contents }, new Transfer[] { TextTransfer.getInstance() });
        } finally {
            if (clipboard != null) {
                clipboard.dispose();
            }
        }
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.jface.dialogs.Dialog#buttonPressed(int)
     */
    protected void buttonPressed(int buttonId) {
        switch (buttonId) {
        case BROWSE_ERROR_LOG_BUTTON:
            openErrorLogBrowser();
            break;
        case COPY_TO_CLIPBOARD_BUTTON:
            runCopyToClipboard();
            break;
        }
        super.buttonPressed(buttonId);
    }

    private void openErrorLogBrowser() {
        AboutUtils.openErrorLogBrowser(getShell());
    }

    private void runCopyToClipboard() {
        if (text == null) {
            return;
        }

        Clipboard clipboard = null;
        try {
            clipboard = new Clipboard(getShell().getDisplay());
            clipboard.setContents(new Object[] { text.getText() }, new Transfer[] { TextTransfer.getInstance() });
        } finally {
            if (clipboard != null) {
                clipboard.dispose();
            }
        }
    }

    private void fetchConfigurationInfo(final Text text) {
        text.setText(WorkbenchMessages.AboutSystemPage_RetrievingSystemInfo);
        WorkbenchJob job = new WorkbenchJob(WorkbenchMessages.AboutSystemPage_FetchJobTitle) {
            public IStatus runInUIThread(IProgressMonitor monitor) {
                String info = ConfigurationInfo.getSystemSummary();
                if (!text.isDisposed())
                    text.setText(info);
                return Status.OK_STATUS;
            }
        };
        job.schedule();
    }
}