org.tigris.subversion.subclipse.ui.dialogs.CompareDialog.java Source code

Introduction

Here is the source code for org.tigris.subversion.subclipse.ui.dialogs.CompareDialog.java

Source

/*******************************************************************************
 * Copied from package org.eclipse.compare.internal.CompareDialog, but features
 * regarding writing the resource is taken out.
 *
 * Copyright (c) 2000, 2003 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.tigris.subversion.subclipse.ui.dialogs;

import java.lang.reflect.InvocationTargetException;

import org.eclipse.compare.CompareEditorInput;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.util.Assert;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.PlatformUI;
import org.tigris.subversion.subclipse.ui.IHelpContextIds;
import org.tigris.subversion.subclipse.ui.Policy;
import org.tigris.subversion.subclipse.ui.SVNUIPlugin;

public class CompareDialog extends SubclipseTrayDialog {

    private CompareEditorInput compareEditorInput;
    private IDialogSettings settings;

    public CompareDialog(Shell shell, CompareEditorInput input) {
        super(shell);
        setShellStyle(getShellStyle() | SWT.RESIZE | SWT.MAX);

        Assert.isNotNull(input);
        compareEditorInput = input;

        settings = SVNUIPlugin.getPlugin().getDialogSettings();
    }

    private boolean compareResultOK(CompareEditorInput input) {
        final Shell shell = getShell();
        try {
            // run operation in separate thread and make it canceable
            SVNUIPlugin.getPlugin().getWorkbench().getProgressService().run(true, true, input);

            String message = input.getMessage();
            if (message != null) {
                MessageDialog.openError(shell, Policy.bind("CompareDialog.compareFailed"), message); //$NON-NLS-1$
                return false;
            }

            if (input.getCompareResult() == null) {
                MessageDialog.openInformation(shell, input.getTitle(), Policy.bind("CompareDialog.noDifferences")); //$NON-NLS-2$ //$NON-NLS-1$
                return false;
            }

            return true;

        } catch (InterruptedException x) {
            // cancelled by user      
        } catch (InvocationTargetException x) {
            MessageDialog.openError(shell, Policy.bind("CompareDialog.compareFailed"), //$NON-NLS-1$
                    x.getTargetException().getMessage());
        }
        return false;
    }

    protected Point getInitialLocation(Point initialSize) {
        try {
            int x = settings.getInt("CompareDialog.location.x"); //$NON-NLS-1$
            int y = settings.getInt("CompareDialog.location.y"); //$NON-NLS-1$
            return new Point(x, y);
        } catch (NumberFormatException e) {
        }
        return super.getInitialLocation(initialSize);
    }

    protected Point getInitialSize() {
        try {
            int x = settings.getInt("CompareDialog.size.x"); //$NON-NLS-1$
            int y = settings.getInt("CompareDialog.size.y"); //$NON-NLS-1$
            return new Point(x, y);
        } catch (NumberFormatException e) {
        }
        return new Point(getShell().getSize().x - 300, getShell().getSize().y - 100);
    }

    public int open() {
        if (compareResultOK(compareEditorInput))
            return super.open();
        else
            return IDialogConstants.ABORT_ID;
    }

    /* (non-Javadoc)
     * Method declared on Dialog.
     */
    protected void createButtonsForButtonBar(Composite parent) {
        createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true); //$NON-NLS-1$
    }

    /* (non-Javadoc)
     * Method declared on Dialog.
     */
    protected Control createDialogArea(Composite parent2) {

        Composite parent = (Composite) super.createDialogArea(parent2);

        Control c = compareEditorInput.createContents(parent);
        c.setLayoutData(new GridData(GridData.FILL_BOTH));

        //      Assert.isTrue(! compareEditorInput.getCompareConfiguration().isLeftEditable());
        //      Assert.isTrue(! compareEditorInput.getCompareConfiguration().isRightEditable());

        Shell shell = c.getShell();
        shell.setText(compareEditorInput.getTitle());
        shell.setImage(compareEditorInput.getTitleImage());
        PlatformUI.getWorkbench().getHelpSystem().setHelp(parent, IHelpContextIds.COMPARE_DIALOG);

        applyDialogFont(parent);
        return parent;
    }

    protected void cancelPressed() {
        saveLocation();
        super.cancelPressed();
    }

    protected void okPressed() {
        saveLocation();
        super.okPressed();
    }

    private void saveLocation() {
        int x = getShell().getLocation().x;
        int y = getShell().getLocation().y;
        settings.put("CompareDialog.location.x", x); //$NON-NLS-1$
        settings.put("CompareDialog.location.y", y); //$NON-NLS-1$
        x = getShell().getSize().x;
        y = getShell().getSize().y;
        settings.put("CompareDialog.size.x", x); //$NON-NLS-1$
        settings.put("CompareDialog.size.y", y); //$NON-NLS-1$   
    }
}