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/*******************************************************************************
 *
 * Copyright (c) 2009, Oracle Corporation
 *
 * 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:
 *
 *
 *
 *
 *******************************************************************************/ 

package hudson.tools;

import hudson.DescriptorExtensionList;
import hudson.model.Descriptor;
import hudson.model.Hudson;

import java.util.List;
import java.util.ArrayList;

/**
 * Descriptor for a {@link ToolInstaller}.
 *
 * @since 1.305
 */
public abstract class ToolInstallerDescriptor extends Descriptor {

    /**
     * Controls what kind of {@link ToolInstallation} this installer can be
     * applied to.
     *
     *  By default, this method just returns true to everything, claiming
     * it's applicable to any tool installations.
     */
    public boolean isApplicable(Class toolType) {
        return true;
    }

    public static DescriptorExtensionList> all() {
        return Hudson.getInstance().>getDescriptorList(ToolInstaller.class);
    }

    /**
     * Filters {@link #all()} by eliminating things that are not applicable to
     * the given type.
     */
    public static List> for_(Class type) {
        List> r = new ArrayList>();
        for (ToolInstallerDescriptor d : all()) {
            if (d.isApplicable(type)) {
                r.add(d);
            }
        }
        return r;
    }
}