/*******************************************************************************
 * Copyright (c) 2000, 2007 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
 *******************************************************************************/
package org.eclipse.core.internal.resources;

import org.eclipse.core.resources.*;
import org.eclipse.core.runtime.QualifiedName;

public interface ICoreConstants {

	// Standard resource properties
	/** map of builders to their last built state. */
	public static final QualifiedName K_BUILD_LIST = new QualifiedName(ResourcesPlugin.PI_RESOURCES, "BuildMap"); //$NON-NLS-1$

	/**
	 * Command line argument indicating a workspace refresh on startup is requested.
	 */
	public static final String REFRESH_ON_STARTUP = "-refresh"; //$NON-NLS-1$

	// resource info constants
	static final long I_NULL_SYNC_INFO = -1;

	// Useful flag masks for resource info states
	static final int M_OPEN = 0x1;
	static final int M_LOCAL_EXISTS = 0x2;
	static final int M_PHANTOM = 0x8;
	static final int M_USED = 0x10;
	static final int M_TYPE = 0xF00;
	static final int M_TYPE_START = 8;
	static final int M_MARKERS_SNAP_DIRTY = 0x1000;
	static final int M_SYNCINFO_SNAP_DIRTY = 0x2000;
	/** 
	 * Marks this resource as derived.
	 * @since 2.0
	 */
	static final int M_DERIVED = 0x4000;
	/** 
	 * Marks this resource as a team-private member of its container.
	 * @since 2.0
	 */
	static final int M_TEAM_PRIVATE_MEMBER = 0x8000;
	/** 
	 * Marks this resource as a hidden resource.
	 * @since 3.4
	 */
	static final int M_HIDDEN = 0x200000;
	
	/** 
	 * Marks this resource as a linked resource.
	 * @since 2.1
	 */
	static final int M_LINK = 0x10000;
	/**
	 * The file has no content description.
	 * @since 3.0
	 */
	static final int M_NO_CONTENT_DESCRIPTION = 0x20000;
	/**
	 * The file has a default content description.
	 * @since 3.0
	 */
	static final int M_DEFAULT_CONTENT_DESCRIPTION = 0x40000;

	/** 
	 * Marks this resource as having undiscovered children
	 * @since 3.1
	 */
	static final int M_CHILDREN_UNKNOWN = 0x100000;

	/**
	 * Set of flags that should be cleared when the contents for a file change.
	 * @since 3.0 
	 */
	static final int M_CONTENT_CACHE = M_NO_CONTENT_DESCRIPTION | M_DEFAULT_CONTENT_DESCRIPTION;
	
	static final int NULL_FLAG = -1;
	
	/**
	 * A private preference stored in a preference node to indicate the preference
	 * version that is used.  This version identifier is used to handle preference
	 * migration when old preferences are loaded.
	 */
	public static final String PREF_VERSION_KEY = "version"; //$NON-NLS-1$

	/**
	 * A private preference stored in a preference node to indicate the preference
	 * version that is used.  This version identifier is used to handle preference
	 * migration when old preferences are loaded.
	 */
	public static final String PREF_VERSION = "1"; //$NON-NLS-1$

	// Internal status codes	
	// Information Only [00-24]
	// Warnings [25-74]
	public static final int CRASH_DETECTED = 10035;
	
	// Errors [75-99]

	public static final int PROJECT_SEGMENT_LENGTH = 1;
	public static final int MINIMUM_FOLDER_SEGMENT_LENGTH = 2;
	public static final int MINIMUM_FILE_SEGMENT_LENGTH = 2;

	public static final int WORKSPACE_TREE_VERSION_1 = 67305985;
	public static final int WORKSPACE_TREE_VERSION_2 = 67305986;

	// helper constants for empty structures
	public static final IProject[] EMPTY_PROJECT_ARRAY = new IProject[0];
	public static final IResource[] EMPTY_RESOURCE_ARRAY = new IResource[0];
	public static final IFileState[] EMPTY_FILE_STATES = new IFileState[0];
}
