bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/ProjectLinkedResourcePage.java

/*******************************************************************************
 * Copyright (c) 2000, 2010 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:
 *     Serge Beauchamp (Freescale Semiconductor) - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.internal.ide.dialogs;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.preference.PreferencePage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.TabItem;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;
import org.eclipse.ui.IWorkbenchPropertyPage;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.dialogs.PropertyPage;
import org.eclipse.ui.internal.ide.IDEWorkbenchMessages;
import org.eclipse.ui.internal.ide.IIDEHelpContextIds;

/**
 * A property page for viewing and modifying the set
 * of path variables in a given project.
 * @since 3.4
 */
public class ProjectLinkedResourcePage extends PropertyPage implements
		IWorkbenchPropertyPage {

	 private Label topLabel;

	 private PathVariablesGroup pathVariablesGroup;
	 private LinkedResourceEditor linkedResourceEditor;

	 /**
	 *
	 */
	public ProjectLinkedResourcePage() {
		 pathVariablesGroup = new PathVariablesGroup(true, IResource.FILE | IResource.FOLDER);
		 linkedResourceEditor = new LinkedResourceEditor();
		 this.noDefaultAndApplyButton();
	 }

	@Override
	protected Control createContents(Composite parent) {

		PlatformUI.getWorkbench().getHelpSystem().setHelp(parent,
				IIDEHelpContextIds.LINKED_RESOURCE_PAGE);

		IAdaptable adaptable = getElement();
		 if (adaptable.getAdapter(IProject.class) != null) {
			 IProject project = (IProject) adaptable.getAdapter(IProject.class);
			 pathVariablesGroup.setResource(project);
			 linkedResourceEditor.setProject(project);
		 }

		 Font font = parent.getFont();

        // PlatformUI.getWorkbench().getHelpSystem().setHelp(parent, IIDEHelpContextIds.LINKED_RESOURCE_PREFERENCE_PAGE);
        // define container & its gridding
        Composite pageComponent = new Composite(parent, SWT.NULL);
        GridLayout layout = new GridLayout();
        layout.marginWidth = 0;
        layout.marginHeight = 0;
        pageComponent.setLayout(layout);
        GridData data = new GridData();
        data.verticalAlignment = GridData.FILL;
        data.horizontalAlignment = GridData.FILL;
        pageComponent.setLayoutData(data);
        pageComponent.setFont(font);

       // createSpace(pageComponent);

        TabFolder tabFolder = new TabFolder(pageComponent, SWT.TOP);
        tabFolder.addSelectionListener(new SelectionListener() {
			@Override
			public void widgetDefaultSelected(SelectionEvent e) {

			}
			@Override
			public void widgetSelected(SelectionEvent e) {
				TabFolder source = (TabFolder) e.getSource();
				if (source.getSelectionIndex() == 1)
					switchToLinkedResources();
				else
					switchToPathVariables();
			}
        });

        pageComponent.setLayout(layout);
        data = new GridData();
        data.verticalAlignment = GridData.FILL;
        data.horizontalAlignment = GridData.FILL;
 		data.grabExcessHorizontalSpace = true;
 		data.grabExcessVerticalSpace = true;
        tabFolder.setLayoutData(data);
        tabFolder.setFont(font);

        TabItem variableItem = new TabItem(tabFolder, SWT.BORDER);

        Composite variableComposite = new Composite(tabFolder, 0);
        variableComposite.setLayout(new GridLayout());
        variableComposite.setFont(font);

        topLabel = new Label(variableComposite, SWT.NONE);
        topLabel.setText(IDEWorkbenchMessages.ProjectLinkedResourcePage_description);
        data = new GridData();
        data.verticalAlignment = GridData.FILL;
        data.horizontalAlignment = GridData.FILL;
        topLabel.setLayoutData(data);
        topLabel.setFont(font);

        pathVariablesGroup.createContents(variableComposite);

        variableItem.setControl(variableComposite);
        variableItem.setText(IDEWorkbenchMessages.ProjectLinkedResourcePage_pathVariableTabTitle);

        TabItem linkedResourceItem = new TabItem(tabFolder, SWT.BORDER);

        Composite linkedResourceComposite = new Composite(tabFolder, 0);
        linkedResourceComposite.setLayout(new GridLayout());
        linkedResourceComposite.setFont(font);

        linkedResourceEditor.createContents(linkedResourceComposite);

        linkedResourceItem.setControl(linkedResourceComposite);
        linkedResourceItem.setText(IDEWorkbenchMessages.ProjectLinkedResourcePage_linkedResourcesTabTitle);

        updateWidgetState(true);
        return pageComponent;
	}

	private void switchToPathVariables() {
		pathVariablesGroup.reloadContent();
	}
	private void switchToLinkedResources() {
		pathVariablesGroup.performOk();
		linkedResourceEditor.reloadContent();
	}

    /**
     * Creates a tab of one horizontal spans.
     *
     * @param parent  the parent in which the tab should be created
     */
    protected static void createSpace(Composite parent) {
        Label vfiller = new Label(parent, SWT.LEFT);
        GridData gridData = new GridData();
        gridData = new GridData();
        gridData.horizontalAlignment = GridData.BEGINNING;
        gridData.grabExcessHorizontalSpace = false;
        gridData.verticalAlignment = GridData.CENTER;
        gridData.grabExcessVerticalSpace = false;
        vfiller.setLayoutData(gridData);
    }

    /**
     * Disposes the path variables group.
     * @see org.eclipse.jface.dialogs.IDialogPage#dispose()
     */
    @Override
	public void dispose() {
        pathVariablesGroup.dispose();
        linkedResourceEditor.dispose();
        super.dispose();
    }

    /**
     * Empty implementation. This page does not use the workbench.
     * @param workbench
     *
     * @see IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
     */
    public void init(IWorkbench workbench) {
    }

    /**
     * Commits the temporary state to the path variable manager in response to user
     * confirmation.
     *
     * @see PreferencePage#performOk()
     * @see PathVariablesGroup#performOk()
     */
    @Override
	public boolean performOk() {
        return pathVariablesGroup.performOk() && linkedResourceEditor.performOk();
    }

    /**
     * Set the widget enabled state
     *
     * @param enableLinking the new widget enabled state
     */
    protected void updateWidgetState(boolean enableLinking) {
        topLabel.setEnabled(enableLinking);
        pathVariablesGroup.setEnabled(enableLinking);
        linkedResourceEditor.setEnabled(enableLinking);
    }
}