/*

* 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.cdt.internal.debug.launch.newwizard;

import java.text.MessageFormat;

import java.util.ArrayList;

import org.eclipse.core.runtime.IStatus;

import org.eclipse.core.runtime.Status;

import org.eclipse.jface.layout.GridDataFactory;

import org.eclipse.jface.layout.GridLayoutFactory;

import org.eclipse.jface.wizard.WizardPage;

import org.eclipse.swt.SWT;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Control;

import com.nokia.cdt.internal.debug.launch.LaunchPlugin;

import com.nokia.cdt.internal.debug.launch.newwizard.IWizardSection.ISectionChangeListener;

import com.nokia.cpp.internal.api.utils.ui.WorkbenchUtils;

public abstract class AbstractUnifiedLaunchOptionsPage extends WizardPage implements ISectionChangeListener {

	protected LaunchWizardData data;

	protected ArrayList<IWizardSection> sections;

	protected AbstractUnifiedLaunchOptionsPage(String pageName, LaunchWizardData data) {

		super(pageName);

		this.data = data;

		this.sections = new ArrayList<IWizardSection>();

	}

	protected void addSection(IWizardSection section) {

		sections.add(section);

	}

	public void createControl(Composite parent) {

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

		GridLayoutFactory.fillDefaults().applyTo(composite);

		setPageComplete(false);

		for (IWizardSection section : sections) {

			section.createControl(composite);

			section.setChangeListener(this);

			GridDataFactory.fillDefaults().grab(true, true).applyTo(section.getControl());

		}

		WorkbenchUtils.setHelpContextId(composite, LaunchWizardHelpIds.WIZARD_DIALOG_LAUNCH_OPTIONS_PAGE);

		setControl(composite);

	}

	public void initializeSettings() {

		for (IWizardSection section : sections) {

			section.initializeSettings();

		}

		validatePage();

	}

	public void validatePage() {

		setMessage(null, INFORMATION);

		setErrorMessage(null);

		setPageComplete(true);

		IStatus pageStatus = null;

		// validate the subsections

		StringBuilder builder = new StringBuilder();

		int severity = IStatus.OK;

		for (IWizardSection section : sections) {

			IStatus status = section.getStatus();

			if (status.isOK())

				continue;

			if (builder.length() > 0)

				builder.append("\n"); //$NON-NLS-1$

			builder.append(MessageFormat.format("{0}: {1}", //$NON-NLS-1$

					section.getSectionName(), 

					status.getMessage()));

			severity = Math.max(severity, status.getSeverity());

		}

		if (severity == IStatus.OK) {

			IStatus status = getStatus();

			if (!status.isOK()) {

				builder.append(status.getMessage());

				severity = status.getSeverity();

			}

		}

		if (severity != 0 || builder.length() > 0) {

			// error from one or more sections

			pageStatus = new Status(severity, LaunchPlugin.PLUGIN_ID, builder.toString());

		} else {

			// sections are good; validate the page as a whole

			pageStatus = data.validate();

		}

		setTitle(Messages.getString("UnifiedLaunchOptionsPage.TitleText")); //$NON-NLS-1$

		if (pageStatus != null && !pageStatus.isOK()) {

			setMessage(pageStatus.getMessage(), severityToMsgType(pageStatus.getSeverity()));

			setPageComplete(pageStatus.getSeverity() < IStatus.ERROR);

		}

	}

	private int severityToMsgType(int severity) {

		switch (severity) {

		case IStatus.OK:

		case IStatus.INFO:

			return INFORMATION;

		case IStatus.WARNING:

			return WARNING;

		case IStatus.ERROR:

		default:

			return ERROR;

		}

	}

	protected abstract IStatus getStatus();

	public void changed() {

		validatePage();

		Control control = getControl();

		if (control != null && !control.isDisposed())

			getWizard().getContainer().getShell().pack();

	}

}