EDIT

/*******************************************************************************

 * Copyright (c) 2003, 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:

 * IBM Corporation - initial API and implementation

 *******************************************************************************/

/*

 * Created on Feb 9, 2004

 *  

 */

package org.eclipse.ui.internal.navigator.filters;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import java.util.Set;

import org.eclipse.jface.dialogs.TrayDialog;

import org.eclipse.jface.resource.ColorRegistry;

import org.eclipse.jface.resource.JFaceResources;

import org.eclipse.jface.viewers.ISelectionChangedListener;

import org.eclipse.swt.SWT;

import org.eclipse.swt.custom.CTabFolder;

import org.eclipse.swt.custom.CTabItem;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.events.SelectionListener;

import org.eclipse.swt.graphics.Color;

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.TableItem;

import org.eclipse.ui.PlatformUI;

import org.eclipse.ui.internal.navigator.CommonNavigatorMessages;

import org.eclipse.ui.internal.navigator.NavigatorPlugin;

import org.eclipse.ui.navigator.CommonViewer;

import org.eclipse.ui.navigator.ICommonFilterDescriptor;

import org.eclipse.ui.navigator.INavigatorContentDescriptor;

import org.eclipse.ui.navigator.INavigatorContentService;

import org.eclipse.ui.navigator.INavigatorViewerDescriptor;

/**

 * 

 * @since 3.2

 * 

 */

public class CommonFilterSelectionDialog extends TrayDialog {

	private static final String FILTER_ICON = "icons/full/elcl16/filter_ps.gif"; //$NON-NLS-1$

	private static final String CONTENT_ICON = "icons/full/elcl16/content.gif"; //$NON-NLS-1$

	private static final int TAB_WIDTH_IN_DLUS = 300;

	private static final int TAB_HEIGHT_IN_DLUS = 150;

	private final CommonViewer commonViewer;

	private final INavigatorContentService contentService;

	private CTabFolder customizationsTabFolder;

	private CommonFiltersTab commonFiltersTab;

	private ContentExtensionsTab contentExtensionsTab;

	private Label descriptionText;

	private ISelectionChangedListener updateDescriptionSelectionListener; 

	private String helpContext;

	/**

	 * Public only for tests.

	 * 

	 * @param aCommonViewer

	 */

	public CommonFilterSelectionDialog(CommonViewer aCommonViewer) {

		super(aCommonViewer.getControl().getShell());

		setShellStyle(SWT.RESIZE | getShellStyle());

		commonViewer = aCommonViewer;

		contentService = commonViewer.getNavigatorContentService();

		INavigatorViewerDescriptor viewerDescriptor = contentService.getViewerDescriptor();

		helpContext = viewerDescriptor

				.getStringConfigProperty(INavigatorViewerDescriptor.PROP_CUSTOMIZE_VIEW_DIALOG_HELP_CONTEXT);

		if (helpContext != null) {

			PlatformUI.getWorkbench().getHelpSystem().setHelp(

					aCommonViewer.getControl().getShell(), helpContext);

		}

	}

	public boolean isHelpAvailable() {

		return helpContext != null;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)

	 */

	protected Control createDialogArea(Composite parent) {

		getShell()

				.setText(

						CommonNavigatorMessages.CommonFilterSelectionDialog_Available_customization_);

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

		createCustomizationsTabFolder(superComposite); 

		commonFiltersTab = new CommonFiltersTab(customizationsTabFolder,

				contentService);

		createTabItem(

				customizationsTabFolder,

				CommonNavigatorMessages.CommonFilterSelectionDialog_Available_Filters,

				commonFiltersTab, FILTER_ICON);

		boolean hideExtensionsTab = contentService.getViewerDescriptor()

				.getBooleanConfigProperty(

						INavigatorViewerDescriptor.PROP_HIDE_AVAILABLE_EXT_TAB);

		if (!hideExtensionsTab) { 

			contentExtensionsTab = new ContentExtensionsTab(

					customizationsTabFolder, contentService);

			createTabItem(

					customizationsTabFolder,

					CommonNavigatorMessages.CommonFilterSelectionDialog_Available_Content,

					contentExtensionsTab, CONTENT_ICON);

		}

		createDescriptionText(superComposite);

		if (commonFiltersTab != null) {

			commonFiltersTab.addSelectionChangedListener(getSelectionListener());

		}

		if (contentExtensionsTab != null) {

			contentExtensionsTab

					.addSelectionChangedListener(getSelectionListener());

		}

		commonFiltersTab.setInitialFocus();

		return customizationsTabFolder;

	}

	private void createCustomizationsTabFolder(Composite superComposite) {

		customizationsTabFolder = new CTabFolder (superComposite, SWT.RESIZE | SWT.BORDER);

		GridData gd = new GridData(SWT.FILL, SWT.FILL, true, true);

		gd.widthHint = convertHorizontalDLUsToPixels(TAB_WIDTH_IN_DLUS);

		gd.heightHint = convertVerticalDLUsToPixels(TAB_HEIGHT_IN_DLUS);

		customizationsTabFolder.setLayout(new GridLayout());

		customizationsTabFolder.setLayoutData(gd);

		customizationsTabFolder.setFont(superComposite.getFont()); 

		customizationsTabFolder.addSelectionListener(new SelectionListener() {

			public void widgetSelected(SelectionEvent e) {

				if (descriptionText != null) {

					descriptionText.setText(""); //$NON-NLS-1$

				}

			}

			public void widgetDefaultSelected(SelectionEvent e) {

			}

		});

		customize();

	}

	private void customize() {

		ColorRegistry reg = JFaceResources.getColorRegistry();

		Color c1 = reg.get("org.eclipse.ui.workbench.ACTIVE_TAB_BG_START"), //$NON-NLS-1$

		  c2 = reg.get("org.eclipse.ui.workbench.ACTIVE_TAB_BG_END"); //$NON-NLS-1$

		customizationsTabFolder.setSelectionBackground(new Color[] {c1, c2},	new int[] {100}, true);

		customizationsTabFolder.setSelectionForeground(reg.get("org.eclipse.ui.workbench.ACTIVE_TAB_TEXT_COLOR")); //$NON-NLS-1$

//		RAP [bmichalik]

//		customizationsTabFolder.setSimple(true);

	}

	private CTabItem createTabItem(CTabFolder aTabFolder, String label,

			Composite composite, String imageKey) {

		CTabItem extensionsTabItem = new CTabItem(aTabFolder, SWT.BORDER);

		extensionsTabItem.setText(label);

 		extensionsTabItem.setControl(composite); 

 		extensionsTabItem.setImage(NavigatorPlugin.getDefault().getImage(imageKey));

 		return extensionsTabItem;

	}

	private void createDescriptionText(Composite composite) {

		descriptionText = new Label(composite, SWT.WRAP);

		descriptionText.setFont(composite.getFont());

		descriptionText.setBackground(composite.getBackground());

		GridData descriptionTextGridData = new GridData(GridData.FILL, GridData.BEGINNING, true, false);

		descriptionTextGridData.heightHint = convertHeightInCharsToPixels(3);

		descriptionText.setLayoutData(descriptionTextGridData);

	}

	private ISelectionChangedListener getSelectionListener() {

		if (updateDescriptionSelectionListener == null) {

			updateDescriptionSelectionListener = new FilterDialogSelectionListener(

					descriptionText);

		}

		return updateDescriptionSelectionListener;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see org.eclipse.jface.dialogs.Dialog#okPressed()

	 */

	protected void okPressed() {

		if (contentExtensionsTab != null) {

			List checkedExtensions = new ArrayList();

			TableItem[] tableItems = contentExtensionsTab.getTable().getItems();

			INavigatorContentDescriptor descriptor;

			for (int i = 0; i < tableItems.length; i++) {

				descriptor = (INavigatorContentDescriptor) tableItems[i]

						.getData();

				if (tableItems[i].getChecked()) {

					checkedExtensions.add(descriptor.getId());

				}

			}

			String[] contentExtensionIdsToActivate = (String[]) checkedExtensions

					.toArray(new String[checkedExtensions.size()]);

			UpdateActiveExtensionsOperation updateExtensions = new UpdateActiveExtensionsOperation(

					commonViewer, contentExtensionIdsToActivate);

			updateExtensions.execute(null, null);

		}

		if (commonFiltersTab != null) {

			Set checkedFilters = commonFiltersTab.getCheckedItems();

			String[] filterIdsToActivate = new String[checkedFilters.size()];

			int indx = 0;

			for (Iterator iterator = checkedFilters.iterator(); iterator

					.hasNext();) {

				ICommonFilterDescriptor descriptor = (ICommonFilterDescriptor) iterator

						.next();

				filterIdsToActivate[indx++] = descriptor.getId();

			} 

			UpdateActiveFiltersOperation updateFilters = new UpdateActiveFiltersOperation(

					commonViewer, filterIdsToActivate);

			updateFilters.execute(null, null);

		}

		super.okPressed();

	}

}