org.eclipse.pde.internal.ui.samples.ProjectNamesPage.java Source code

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Here is the source code for org.eclipse.pde.internal.ui.samples.ProjectNamesPage.java

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/*******************************************************************************
 *  Copyright (c) 2000, 2014 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.pde.internal.ui.samples;

import java.util.HashSet;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.dialogs.IMessageProvider;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.osgi.util.NLS;
import org.eclipse.pde.internal.ui.*;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.*;
import org.eclipse.ui.PlatformUI;

/**
 *
 */
public class ProjectNamesPage extends WizardPage {
    private SampleWizard wizard;
    private Composite container;

    /**
     * @param pageName
     */
    public ProjectNamesPage(SampleWizard wizard) {
        super("projects"); //$NON-NLS-1$
        this.wizard = wizard;
        setTitle(PDEUIMessages.ProjectNamesPage_title);
        setDescription(PDEUIMessages.ProjectNamesPage_desc);
    }

    public void setVisible(boolean visible) {
        setPageComplete(wizard.getSelection() != null);
        if (container != null)
            updateEntries();
        super.setVisible(visible);
    }

    void updateEntries() {
        IConfigurationElement selection = wizard.getSelection();
        if (selection != null) {
            setMessage(null);
            IConfigurationElement[] projects = selection.getChildren("project"); //$NON-NLS-1$
            Control[] children = container.getChildren();
            if (projects.length == 1 && children.length == 2) {
                Text text = (Text) children[1];
                text.setText(projects[0].getAttribute("name")); //$NON-NLS-1$
                validateEntries();
                return;
            }
            // dispose all
            for (int i = 0; i < children.length; i++) {
                children[i].dispose();
            }
            // create entries
            if (projects.length == 1) {
                createEntry(PDEUIMessages.ProjectNamesPage_projectName, projects[0].getAttribute("name")); //$NON-NLS-1$ 
            } else {
                for (int i = 0; i < projects.length; i++) {
                    String label = NLS.bind(PDEUIMessages.ProjectNamesPage_multiProjectName, "" + (i + 1)); //$NON-NLS-1$ 
                    createEntry(label, projects[i].getAttribute("name")); //$NON-NLS-1$
                }
            }
            container.layout();
            validateEntries();
        } else {
            setMessage(PDEUIMessages.ProjectNamesPage_noSampleFound, IMessageProvider.WARNING);
        }
    }

    public String[] getProjectNames() {
        Control[] children = container.getChildren();
        String[] names = new String[children.length / 2];

        int index = 0;
        for (int i = 0; i < children.length; i++) {
            if (children[i] instanceof Text) {
                String name = ((Text) children[i]).getText();
                names[index++] = name;
            }
        }
        return names;
    }

    private void createEntry(String labelName, String projectName) {
        Label label = new Label(container, SWT.NULL);
        label.setText(labelName);
        label.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_CENTER));
        final Text text = new Text(container, SWT.SINGLE | SWT.BORDER);
        text.setText(projectName);
        text.addModifyListener(new ModifyListener() {
            public void modifyText(ModifyEvent e) {
                validateEntries();
            }
        });
        text.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
    }

    private void validateEntries() {
        Control[] children = container.getChildren();
        boolean empty = false;

        HashSet<String> set = new HashSet<String>();
        for (int i = 0; i < children.length; i++) {
            if (children[i] instanceof Text) {
                String name = ((Text) children[i]).getText();
                if (name.length() == 0) {
                    empty = true;
                    break;
                }
                IStatus nameStatus = PDEPlugin.getWorkspace().validateName(name, IResource.PROJECT);
                if (!nameStatus.isOK()) {
                    setErrorMessage(nameStatus.getMessage());
                    setPageComplete(false);
                    return;
                }
                set.add(name);
            }
        }
        if (empty) {
            setErrorMessage(PDEUIMessages.ProjectNamesPage_emptyName);
            setPageComplete(false);
        } else {
            int nnames = set.size();
            int nfields = children.length / 2;
            if (nfields > nnames) {
                setErrorMessage(PDEUIMessages.ProjectNamesPage_duplicateNames);
                setPageComplete(false);
            } else {
                setPageComplete(true);
                setErrorMessage(null);
            }
        }
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
     */
    public void createControl(Composite parent) {
        container = new Composite(parent, SWT.NULL);
        GridLayout layout = new GridLayout();
        layout.numColumns = 2;
        container.setLayout(layout);
        setControl(container);
        updateEntries();

        PlatformUI.getWorkbench().getHelpSystem().setHelp(container, IHelpContextIds.PROJECT_NAMES);
    }
}