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/*******************************************************************************
 * Copyright (c) 2000, 2008 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
 *     Jan-Hendrik Diederich, Bredex GmbH - bug 201052
 *******************************************************************************/
package org.eclipse.ui;

import org.eclipse.jface.resource.ImageDescriptor;

/**
 * An association between a file name/extension and a list of known editors for
 * files of that type.
 * 
 * The name and extension can never empty or null. The name may contain
 * the single wild card character (*) to indicate the editor applies to
 * all files with the same extension (e.g. *.doc). The name can never
 * embed the wild card character within itself (i.e. rep*)
 * 
 * 
 * This interface is not intended to be implemented by clients.
 * 
 *
 * @see IEditorRegistry#getFileEditorMappings
 * @noimplement This interface is not intended to be implemented by clients.
 */
public interface IFileEditorMapping {
    /**
     * Returns the default editor registered for this type mapping.
     *
     * @return the descriptor of the default editor, or null if there
     *   is no default editor registered. Will also return null if
     *   the default editor exists but fails the Expressions check.
     */
    public IEditorDescriptor getDefaultEditor();

    /**
     * Returns the list of editors registered for this type mapping.
     *
     * @return a possibly empty list of editors.
     */
    public IEditorDescriptor[] getEditors();

    /**
     * Returns the list of editors formerly registered for this type mapping
     * which have since been deleted.
     *
     * @return a possibly empty list of editors
     */
    public IEditorDescriptor[] getDeletedEditors();

    /**
     * Returns the file's extension for this type mapping.
     *
     * @return the extension for this mapping
     */
    public String getExtension();

    /**
     * Returns the descriptor of the image to use for a file of this type.
     * 
     * The image is obtained from the default editor. A default file image is
     * returned if no default editor is available.
     * 
     *
     * @return the descriptor of the image to use for a resource of this type
     */
    public ImageDescriptor getImageDescriptor();

    /**
     * Returns the label to use for this mapping.
     * Labels have the form "name.extension".
     *
     * @return the label to use for this mapping
     */
    public String getLabel();

    /**
     * Returns the file's name for this type mapping.
     *
     * @return the name for this mapping
     */
    public String getName();
}