au.gov.ga.earthsci.core.proxy.ProxyPreferences.java Source code

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Here is the source code for au.gov.ga.earthsci.core.proxy.ProxyPreferences.java

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/*******************************************************************************
 * Copyright 2012 Geoscience Australia
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package au.gov.ga.earthsci.core.proxy;

import java.net.ProxySelector;

import javax.inject.Inject;
import javax.inject.Singleton;

import org.eclipse.core.runtime.preferences.AbstractPreferenceInitializer;
import org.eclipse.core.runtime.preferences.DefaultScope;
import org.eclipse.e4.core.di.annotations.Creatable;
import org.eclipse.e4.core.di.extensions.Preference;
import org.eclipse.jface.preference.IPreferenceStore;

import au.gov.ga.earthsci.core.preferences.PreferenceConstants;
import au.gov.ga.earthsci.core.preferences.ScopedPreferenceStore;

import com.btr.proxy.search.ProxySearch;

/**
 * Class used to initialize default preference values, and configure the proxy
 * when the preferences change.
 * 
 * @author Michael de Hoog (michael.dehoog@ga.gov.au)
 */
@Creatable
@Singleton
public class ProxyPreferences extends AbstractPreferenceInitializer {
    public static final String PROXY_TYPE = "proxyType"; //$NON-NLS-1$
    public static final String PROXY_TYPE_NONE = "none"; //$NON-NLS-1$
    public static final String PROXY_TYPE_SYSTEM = "system"; //$NON-NLS-1$
    public static final String PROXY_TYPE_USER = "user"; //$NON-NLS-1$
    public static final String PROXY_HOST = "proxyHost"; //$NON-NLS-1$
    public static final String PROXY_PORT = "proxyPort"; //$NON-NLS-1$
    public static final String NON_PROXY_HOSTS = "nonProxyHosts"; //$NON-NLS-1$

    private static ProxySelector defaultProxySelector = null;

    public static void configureProxy(String proxyType, String proxyHost, int proxyPort, String nonProxyHosts) {
        boolean system = PROXY_TYPE_SYSTEM.equals(proxyType);
        boolean user = PROXY_TYPE_USER.equals(proxyType);
        System.setProperty("java.net.useSystemProxies", system ? "true" : "false"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$

        String actualProxyHost = user ? proxyHost : ""; //$NON-NLS-1$
        System.setProperty("http.proxyHost", actualProxyHost); //$NON-NLS-1$
        System.setProperty("ftp.proxyHost", actualProxyHost); //$NON-NLS-1$

        System.setProperty("http.proxyPort", "" + proxyPort); //$NON-NLS-1$ //$NON-NLS-2$
        System.setProperty("ftp.proxyPort", "" + proxyPort); //$NON-NLS-1$ //$NON-NLS-2$

        System.setProperty("http.nonProxyHosts", "" + nonProxyHosts); //$NON-NLS-1$ //$NON-NLS-2$
        System.setProperty("ftp.nonProxyHosts", "" + nonProxyHosts); //$NON-NLS-1$ //$NON-NLS-2$

        if (system) {
            if (defaultProxySelector == null) {
                defaultProxySelector = ProxySelector.getDefault();
            }
            ProxySearch proxySearch = ProxySearch.getDefaultProxySearch();
            ProxySelector myProxySelector = proxySearch.getProxySelector();
            ProxySelector.setDefault(myProxySelector);
        } else if (defaultProxySelector != null) {
            ProxySelector.setDefault(defaultProxySelector);
        }
    }

    @Override
    public void initializeDefaultPreferences() {
        IPreferenceStore store = new ScopedPreferenceStore(DefaultScope.INSTANCE, PreferenceConstants.QUALIFIER_ID);
        store.setDefault(PROXY_TYPE, PROXY_TYPE_SYSTEM);
        store.setDefault(PROXY_HOST, ""); //$NON-NLS-1$
        store.setDefault(PROXY_PORT, 80);
        store.setDefault(NON_PROXY_HOSTS, "localhost"); //$NON-NLS-1$
    }

    @Inject
    public void preferencesChanged(
            @Preference(nodePath = PreferenceConstants.QUALIFIER_ID, value = PROXY_TYPE) String proxyType,
            @Preference(nodePath = PreferenceConstants.QUALIFIER_ID, value = PROXY_HOST) String proxyHost,
            @Preference(nodePath = PreferenceConstants.QUALIFIER_ID, value = PROXY_PORT) int proxyPort,
            @Preference(nodePath = PreferenceConstants.QUALIFIER_ID, value = NON_PROXY_HOSTS) String nonProxyHosts) {
        configureProxy(proxyType, proxyHost, proxyPort, nonProxyHosts);
    }
}