/**

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

package com.nokia.carbide.remoteconnections.internal.ui;

import java.text.MessageFormat;

import org.eclipse.core.runtime.IStatus;

import org.eclipse.jface.dialogs.Dialog;

import org.eclipse.jface.layout.GridLayoutFactory;

import org.eclipse.jface.resource.JFaceResources;

import org.eclipse.mylyn.internal.provisional.commons.ui.AbstractNotificationPopup;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.DisposeEvent;

import org.eclipse.swt.events.DisposeListener;

import org.eclipse.swt.events.SelectionAdapter;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.graphics.Image;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Link;

import org.eclipse.swt.widgets.MessageBox;

import org.eclipse.swt.widgets.Shell;

import com.nokia.carbide.remoteconnections.internal.api.IStatusDisplay;

import com.nokia.cpp.internal.api.utils.core.Check;

@SuppressWarnings("restriction")

public class StatusDisplay implements IStatusDisplay {

	private final class NotificationPopup extends AbstractNotificationPopup {

		private final IStatus status;

		private final String prompt;

		private NotificationPopup(Display display, IStatus status, String prompt) {

			super(display);

			this.status = status;

			this.prompt = prompt;

			setDelayClose(30 * 1000);

		}

		protected void createContentArea(Composite composite) {

			GridLayoutFactory.fillDefaults().margins(5, 5).applyTo(composite);

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

			label.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

			label.setText(status.getMessage());

			label.setBackground(composite.getBackground());

			if (prompt != null) {

				Link link = new Link(composite, SWT.WRAP);

				link.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

				link.setText(MessageFormat.format("<a href=\"{0}\">{0}</a>", prompt));

				link.setBackground(composite.getBackground());

				link.addSelectionListener(new SelectionAdapter() {

					public void widgetSelected(SelectionEvent e) {

						clicked = true;

						NotificationPopup.this.close();

					}

				});

			}

		}

		@Override

		protected String getPopupShellTitle() {

			return getTitleString(status);

		}

		@Override

		protected Image getPopupShellImage(int maximumHeight) {

			switch (status.getSeverity()) {

			case IStatus.INFO:

				return JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_INFO);

			case IStatus.WARNING:

				return JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_WARNING);

			case IStatus.ERROR:

				return JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_ERROR);

			};

			Check.checkState(false);

			return null;

		}

	}

	private static final int MODAL_MASK = SWT.APPLICATION_MODAL | SWT.PRIMARY_MODAL | SWT.SYSTEM_MODAL;

	private boolean clicked;

	private boolean closed;

	public StatusDisplay() {

	}

	public void displayStatus(final IStatus status) {

		final Display display = Display.getDefault();

		display.syncExec(new Runnable() {

			public void run() {

				doDisplayStatus(display, null, status);

			}

		});

	}

	public void displayStatusWithAction(final IStatus status, final String prompt, Runnable action) {

		final Display display = Display.getDefault();

		display.asyncExec(new Runnable() {

			public void run() {

				doDisplayStatus(display, prompt, status);

			}

		});

		while (!closed) {

			try {

				Thread.sleep(200);

			} catch (InterruptedException e1) {

			}

		}

		if (clicked)

			action.run();

	}

	private Shell getModalShell(Display display) {

		Shell[] shells = display.getShells();

		for (int i = shells.length - 1; i >= 0; i--) {

			Shell shell = shells[i];

			if ((shell.getStyle() & MODAL_MASK) != 0) {

				return shell;

			}

		}

		return null;

	}

	protected void doDisplayStatus(Display display, String prompt, IStatus status) {

		Shell modalShell = getModalShell(display);

		if (modalShell == null) {

			NotificationPopup popup = new NotificationPopup(display, status, prompt);

			popup.open();

			popup.getShell().addDisposeListener(new DisposeListener() {

				public void widgetDisposed(DisposeEvent e) {

					StatusDisplay.this.closed = true;

				}

			});

		}

		else {

			int style = SWT.YES | SWT.NO;

			switch (status.getSeverity()) {

			case IStatus.INFO:

				style |= SWT.ICON_INFORMATION;

				break;

			case IStatus.WARNING:

				style |= SWT.ICON_WARNING;

				break;

			case IStatus.ERROR:

				style |= SWT.ICON_ERROR;

				break;

			default:

				Check.checkState(false);

			};

			MessageBox messageBox = new MessageBox(modalShell, style);

			messageBox.setText(getTitleString(status));

			StringBuilder sb = new StringBuilder();

			sb.append(status.getMessage());

			sb.append("\n");

			sb.append(prompt);

			messageBox.setMessage(sb.toString());

			int open = messageBox.open();

			closed = true;

			clicked = open == SWT.YES;

		}

	}

	private String getTitleString(IStatus status) {

		switch (status.getSeverity()) {

		case IStatus.INFO:

			return "Information";

		case IStatus.WARNING:

			return "Warning";

		case IStatus.ERROR:

			return "Error";

		};

		Check.checkState(false);

		return null;

	}

}