/*

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of "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:  Definitions for the class PreNature

 *

 */

package com.nokia.s60tools.analyzetool.builder;

import org.eclipse.core.resources.ICommand;

import org.eclipse.core.resources.IProject;

import org.eclipse.core.resources.IProjectDescription;

import org.eclipse.core.resources.IProjectNature;

import org.eclipse.core.runtime.CoreException;

/**

 * Class to implement pre-builder nature.

 *

 * @author kihe

 *

 */

public class PreNature implements IProjectNature {

	/** ID of pre-builder project nature. */

	public static final String NATURE_ID = "com.nokia.s60tools.analyzetool.preNature";

	/** Project reference. */

	private IProject project;

	/**

	 * Sets AnalyzeTool builder to project description

	 *

	 * @see org.eclipse.core.resources.IProjectNature#configure()

	 */

	public void configure() throws CoreException {

		IProjectDescription desc = project.getDescription();

		ICommand[] commands = desc.getBuildSpec();

		int qtBuilderIndex = 0;

		boolean qtBuildeFound = false;

		//thru existing builders

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

			//if AT builder id is already addred => leave

			if (commands[i].getBuilderName().equals(

					AnalyzeToolBuilder.AT_BUILDER_ID)) {

				return;

			}

			//if current builder is QT builder => save location

			else if(commands[i].getBuilderName().equals(com.trolltech.qtcppproject.QtProConstants.QTBUILDER_ID)) {

				qtBuilderIndex = i;

				qtBuildeFound = true;

			}

		}

		//create new commands

		ICommand[] newCommands = new ICommand[commands.length + 1];

		//create new command(AT command)

		ICommand command = desc.newCommand();

		command.setBuilderName(AnalyzeToolBuilder.AT_BUILDER_ID);

		//QT nature id found => now start to copy existing id and add AT builder id

		if( qtBuildeFound ) {

			if( qtBuilderIndex == 0 ) {

				newCommands[0] = commands[0];

				newCommands[1] = command;

				System.arraycopy(commands, 1, newCommands, 2, commands.length-1);

			}

			else {

				System.arraycopy(commands, 0, newCommands, 0, qtBuilderIndex+1);

				newCommands[qtBuilderIndex+1] =command;

				System.arraycopy(commands, qtBuilderIndex+1, newCommands, qtBuilderIndex+2, commands.length-qtBuilderIndex);

			}

		}

		//no qt builder found => add AT builder to first of the builder list

		else {

			newCommands[0] = command;

			System.arraycopy(commands, 0, newCommands, 1, commands.length);

		}

		//update project description

		desc.setBuildSpec(newCommands);

		project.setDescription(desc, null);

	}

	/**

	 * Removes AnalyzeTool builder from the project description

	 *

	 * @see org.eclipse.core.resources.IProjectNature#deconfigure()

	 */

	public void deconfigure() throws CoreException {

		IProjectDescription description = getProject().getDescription();

		ICommand[] commands = description.getBuildSpec();

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

			if (commands[i].getBuilderName().equals(

					AnalyzeToolBuilder.AT_BUILDER_ID)) {

				ICommand[] newCommands = new ICommand[commands.length - 1];

				System.arraycopy(commands, 0, newCommands, 0, i);

				System.arraycopy(commands, i + 1, newCommands, i,

						commands.length - i - 1);

				description.setBuildSpec(newCommands);

				project.setDescription(description, null);

				return;

			}

		}

	}

	/*

	 * (non-Javadoc)

	 *

	 * @see org.eclipse.core.resources.IProjectNature#getProject()

	 */

	public IProject getProject() {

		return project;

	}

	/*

	 * (non-Javadoc)

	 *

	 * @see org.eclipse.core.resources.IProjectNature#setProject(org.eclipse.core.resources.IProject)

	 */

	public void setProject(IProject projectRef) {

		this.project = projectRef;

	}

}