/*

* Copyright (c) 2009 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.net.URL;

import java.util.ArrayList;

import java.util.Collection;

import org.eclipse.jface.dialogs.Dialog;

import org.eclipse.jface.dialogs.IDialogConstants;

import org.eclipse.jface.viewers.ArrayContentProvider;

import org.eclipse.jface.viewers.ISelection;

import org.eclipse.jface.viewers.ISelectionChangedListener;

import org.eclipse.jface.viewers.IStructuredSelection;

import org.eclipse.jface.viewers.LabelProvider;

import org.eclipse.jface.viewers.ListViewer;

import org.eclipse.jface.viewers.SelectionChangedEvent;

import org.eclipse.jface.viewers.StructuredSelection;

import org.eclipse.jface.window.IShellProvider;

import org.eclipse.swt.SWT;

import org.eclipse.swt.custom.SashForm;

import org.eclipse.swt.events.SelectionAdapter;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.graphics.Point;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Control;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Event;

import org.eclipse.swt.widgets.Link;

import org.eclipse.swt.widgets.Listener;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.swt.widgets.Text;

import org.eclipse.ui.IWorkbench;

import org.eclipse.ui.PlatformUI;

import org.eclipse.ui.browser.IWebBrowser;

import com.nokia.carbide.remoteconnections.RemoteConnectionsActivator;

public class DeviceDiscoveryPrequisiteErrorDialog extends Dialog {

	private class AgentItem {

		public String agentName;

		public String agentErrorText;

		public URL agentLocation;

		AgentItem(String name, String text, URL location) {

			agentName = name;

			agentErrorText = text;

			agentLocation = location;

			// if location is not null and error text doesn't contain href

			//  then do it here

			if (agentLocation != null && !agentErrorText.contains("href=")) {

				String msg = String.format("%s - For more information go to: <a href=\"%s\">%s</a>",

						agentErrorText, location.toString(), location.toString());

				agentErrorText = msg;

			}

		}

	}

	private Collection<AgentItem> agentList = new ArrayList<AgentItem>();

	private boolean isDontBotherMeOn = false;

	private ListViewer agentListViewer;

	private Link errorText;

	private Button dontBotherMeCheckBox;

	/**

	 * @param parentShell

	 */

	public DeviceDiscoveryPrequisiteErrorDialog(Shell parentShell) {

		super(parentShell);

		agentList.clear();

	}

	/**

	 * @param parentShell

	 */

	public DeviceDiscoveryPrequisiteErrorDialog(IShellProvider parentShell) {

		super(parentShell);

		agentList.clear();

	}

	public void addAgentData(String name, String errorText, URL location) {

		agentList.add(new AgentItem(name, errorText, location));

	}

	public boolean isDontBotherMeOn() {

		return isDontBotherMeOn;

	}

	@Override

	protected void createButtonsForButtonBar(Composite parent) {

		// OK button == "Close"

		// no Cancel button

		createButton(parent, IDialogConstants.OK_ID, IDialogConstants.CLOSE_LABEL, true);

	}

	@Override

	protected Control createDialogArea(Composite parent) {

		initializeDialogUnits(parent);

		Composite container = new Composite(parent, SWT.NONE);

		GridLayout layout = new GridLayout(1, true);

		container.setLayout(layout);

		container.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

		// Message at top

		Text topMessage = new Text(container, SWT.MULTI | SWT.WRAP);

		topMessage.setText("At least one device discovery agent had load errors that prevent it from discovering connections to devices. Select one to get more information about its error.");

		topMessage.setEditable(false);

		topMessage.setDoubleClickEnabled(false);

		GridData topMsgData = new GridData(SWT.LEFT, SWT.CENTER, true, false);

		topMsgData.heightHint = 48;

		topMessage.setLayoutData(topMsgData);

		topMessage.setToolTipText("Select an agent for more information about load errors.");

		// next two panes can be resized with a sash form

		SashForm sashForm = new SashForm(container, SWT.VERTICAL);

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

		sashForm.setLayoutData(gridData);

		sashForm.setToolTipText("Slide to adjust pane size above and below to see more text.");

		// this pane lists all the agent display names

		agentListViewer = new ListViewer(sashForm, SWT.V_SCROLL | SWT.BORDER);

		agentListViewer.setContentProvider(new ArrayContentProvider());

		agentListViewer.setLabelProvider(new LabelProvider() {

			@Override

			public String getText(Object element) {

				return ((AgentItem)element).agentName;

			}

		});

		agentListViewer.addSelectionChangedListener(new ISelectionChangedListener() {

			public void selectionChanged(SelectionChangedEvent event) {

				IStructuredSelection selection = (IStructuredSelection) event.getSelection();

				AgentItem item = (AgentItem) selection.getFirstElement();

				errorText.setText(item.agentErrorText);				

			}

		});

		agentListViewer.setInput(agentList);

		// pane to view the information about the selected agent

		errorText = new Link(sashForm, SWT.V_SCROLL | SWT.BORDER | SWT.WRAP);

		errorText.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_LIST_BACKGROUND));

		errorText.setToolTipText("Error message for the selected agent above");

		errorText.addListener(SWT.Selection, new Listener() {

			public void handleEvent(Event event) {

				// Launch an external browser

				String siteText = event.text;

				IWorkbench workbench = PlatformUI.getWorkbench();

				try {

					IWebBrowser browser = workbench.getBrowserSupport().getExternalBrowser();

					browser.openURL(new URL(siteText));

				} catch (Exception e) {

					RemoteConnectionsActivator.logError(e);

				}

			}

		});

		// add initial weights to the above two panes

		sashForm.setWeights(new int[] {150,200});

		// now the don't bother me check box

		dontBotherMeCheckBox = new Button(container, SWT.CHECK);

		dontBotherMeCheckBox.setLayoutData(new GridData(GridData.BEGINNING, GridData.CENTER, true, false));

		dontBotherMeCheckBox.setText("Don't bother me again.");

		dontBotherMeCheckBox.setToolTipText("Check this to ignore further discovery agent load errors");

		dontBotherMeCheckBox.setSelection(isDontBotherMeOn);

		dontBotherMeCheckBox.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(SelectionEvent e) {

				isDontBotherMeOn = dontBotherMeCheckBox.getSelection();

			}

		});

		// now finish by selecting the top most agent in the list

		// and bringing it into view

		Object o = agentListViewer.getElementAt(0);

		if (o != null)

			agentListViewer.setSelection(new StructuredSelection(o));

		ISelection selection = agentListViewer.getSelection();

		if (selection != null && !selection.isEmpty()) {

			agentListViewer.reveal(selection);

		}

		return container;

	}

	@Override

	protected Point getInitialSize() {

		return new Point(400,400);

	}

	@Override

	protected void okPressed() {

		// TODO Auto-generated method stub

		super.okPressed();

	}

	@Override

	protected void configureShell(Shell newShell) {

		super.configureShell(newShell);

		// set our title to the dialog

		newShell.setText("Device Discovery Load Errors");

	}

}