com.annotatedsql.classlibrary.ClassPathContainerPage.java Source code

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Here is the source code for com.annotatedsql.classlibrary.ClassPathContainerPage.java

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/*******************************************************************************
 * Copyright (c) 2000, 2008 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 com.annotatedsql.classlibrary;

import java.util.ArrayList;

import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
import org.eclipse.jdt.internal.ui.JavaPluginImages;
import org.eclipse.jdt.internal.ui.dialogs.StatusInfo;
import org.eclipse.jdt.internal.ui.wizards.NewWizardMessages;
import org.eclipse.jdt.internal.ui.wizards.dialogfields.DialogField;
import org.eclipse.jdt.internal.ui.wizards.dialogfields.IDialogFieldListener;
import org.eclipse.jdt.internal.ui.wizards.dialogfields.LayoutUtil;
import org.eclipse.jdt.internal.ui.wizards.dialogfields.StringDialogField;
import org.eclipse.jdt.ui.wizards.IClasspathContainerPage;
import org.eclipse.jdt.ui.wizards.IClasspathContainerPageExtension;
import org.eclipse.jdt.ui.wizards.NewElementWizardPage;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.PlatformUI;

public class ClassPathContainerPage extends NewElementWizardPage
        implements IClasspathContainerPage, IClasspathContainerPageExtension {

    private StringDialogField fEntryField;
    private ArrayList<IPath> fUsedPaths;

    /**
     * Constructor for ClasspathContainerDefaultPage.
     */
    public ClassPathContainerPage() {
        super("ClassPathContainerPage"); //$NON-NLS-1$
        setTitle(NewWizardMessages.ClasspathContainerDefaultPage_title);
        setDescription(NewWizardMessages.ClasspathContainerDefaultPage_description);
        setImageDescriptor(JavaPluginImages.DESC_WIZBAN_ADD_LIBRARY);

        fUsedPaths = new ArrayList<IPath>();

        fEntryField = new StringDialogField();
        fEntryField.setLabelText(NewWizardMessages.ClasspathContainerDefaultPage_path_label);
        fEntryField.setDialogFieldListener(new IDialogFieldListener() {
            public void dialogFieldChanged(DialogField field) {
                validatePath();
            }
        });
        validatePath();
    }

    private void validatePath() {
        StatusInfo status = new StatusInfo();
        String str = fEntryField.getText();
        if (str.length() == 0) {
            status.setError(NewWizardMessages.ClasspathContainerDefaultPage_path_error_enterpath);
        } else if (!Path.ROOT.isValidPath(str)) {
            status.setError(NewWizardMessages.ClasspathContainerDefaultPage_path_error_invalidpath);
        } else {
            IPath path = new Path(str);
            if (path.segmentCount() == 0) {
                status.setError(NewWizardMessages.ClasspathContainerDefaultPage_path_error_needssegment);
            } else if (fUsedPaths.contains(path)) {
                status.setError(NewWizardMessages.ClasspathContainerDefaultPage_path_error_alreadyexists);
            }
        }
        updateStatus(status);
    }

    /* (non-Javadoc)
     * @see IDialogPage#createControl(Composite)
     */
    public void createControl(Composite parent) {
        Composite composite = new Composite(parent, SWT.NONE);
        GridLayout layout = new GridLayout();
        layout.numColumns = 1;
        composite.setLayout(layout);

        fEntryField.doFillIntoGrid(composite, 2);
        LayoutUtil.setHorizontalGrabbing(fEntryField.getTextControl(null));

        fEntryField.setFocus();

        setControl(composite);
        Dialog.applyDialogFont(composite);
        PlatformUI.getWorkbench().getHelpSystem().setHelp(composite,
                IJavaHelpContextIds.CLASSPATH_CONTAINER_DEFAULT_PAGE);
    }

    /* (non-Javadoc)
     * @see IClasspathContainerPage#finish()
     */
    public boolean finish() {
        return true;
    }

    /* (non-Javadoc)
     * @see IClasspathContainerPage#getSelection()
     */
    public IClasspathEntry getSelection() {
        return JavaCore.newContainerEntry(new Path(fEntryField.getText()));
    }

    /* (non-Javadoc)
     * @see org.eclipse.jdt.ui.wizards.IClasspathContainerPageExtension#initialize(org.eclipse.jdt.core.IJavaProject, org.eclipse.jdt.core.IClasspathEntry)
     */
    public void initialize(IJavaProject project, IClasspathEntry[] currentEntries) {
        for (int i = 0; i < currentEntries.length; i++) {
            IClasspathEntry curr = currentEntries[i];
            if (curr.getEntryKind() == IClasspathEntry.CPE_LIBRARY) {
                fUsedPaths.add(curr.getPath());
            }
        }
    }

    /* (non-Javadoc)
     * @see IClasspathContainerPage#setSelection(IClasspathEntry)
     */
    public void setSelection(IClasspathEntry containerEntry) {
        if (containerEntry != null) {
            fUsedPaths.remove(containerEntry.getPath());
            fEntryField.setText(containerEntry.getPath().toString());
        } else {
            fEntryField.setText(ClassPathContainerImpl.ID.toString()); //$NON-NLS-1$
        }
    }
}