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Android example source code file (UrlInterceptRegistry.java)

This example Android source code file (UrlInterceptRegistry.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

android, cacheresult, deprecated, iterator, linkedlist, logtag, map, plugindata, string, urlintercepthandler, urlinterceptregistry, util, webkit

The UrlInterceptRegistry.java Android example source code

/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * 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 android.webkit;

import android.webkit.CacheManager.CacheResult;
import android.webkit.PluginData;
import android.webkit.UrlInterceptHandler;

import java.util.Iterator;
import java.util.LinkedList;
import java.util.Map;

/**
 * @deprecated This class was intended to be used by Gears. Since Gears was
 * deprecated, so is this class.
 */
@Deprecated
public final class UrlInterceptRegistry {

    private final static String LOGTAG = "intercept";

    private static boolean mDisabled = false;

    private static LinkedList mHandlerList;

    private static synchronized LinkedList getHandlers() {
        if(mHandlerList == null)
            mHandlerList = new LinkedList<UrlInterceptHandler>();
        return mHandlerList;
    }

    /**
     * set the flag to control whether url intercept is enabled or disabled
     * 
     * @param disabled true to disable the cache
     *
     * @deprecated This class was intended to be used by Gears. Since Gears was
     * deprecated, so is this class.
     */
    @Deprecated
    public static synchronized void setUrlInterceptDisabled(boolean disabled) {
        mDisabled = disabled;
    }

    /**
     * get the state of the url intercept, enabled or disabled
     * 
     * @return return if it is disabled
     *
     * @deprecated This class was intended to be used by Gears. Since Gears was
     * deprecated, so is this class.
     */
    @Deprecated
    public static synchronized boolean urlInterceptDisabled() {
        return mDisabled;
    }

    /**
     * Register a new UrlInterceptHandler. This handler will be called
     * before any that were previously registered.
     *
     * @param handler The new UrlInterceptHandler object
     * @return true if the handler was not previously registered.
     *
     * @deprecated This class was intended to be used by Gears. Since Gears was
     * deprecated, so is this class.
     */
    @Deprecated
    public static synchronized boolean registerHandler(
            UrlInterceptHandler handler) {
        if (!getHandlers().contains(handler)) {
            getHandlers().addFirst(handler);
            return true;
        } else {
            return false;
        }
    }

    /**
     * Unregister a previously registered UrlInterceptHandler.
     *
     * @param handler A previously registered UrlInterceptHandler.
     * @return true if the handler was found and removed from the list.
     *
     * @deprecated This class was intended to be used by Gears. Since Gears was
     * deprecated, so is this class.
     */
    @Deprecated
    public static synchronized boolean unregisterHandler(
            UrlInterceptHandler handler) {
        return getHandlers().remove(handler);
    }

    /**
     * Given an url, returns the CacheResult of the first
     * UrlInterceptHandler interested, or null if none are.
     *
     * @return A CacheResult containing surrogate content.
     *
     * @deprecated This class was intended to be used by Gears. Since Gears was
     * deprecated, so is this class.
     */
    @Deprecated
    public static synchronized CacheResult getSurrogate(
            String url, Map<String, String> headers) {
        if (urlInterceptDisabled()) {
            return null;
        }
        Iterator iter = getHandlers().listIterator();
        while (iter.hasNext()) {
            UrlInterceptHandler handler = (UrlInterceptHandler) iter.next();
            CacheResult result = handler.service(url, headers);
            if (result != null) {
                return result;
            }
        }
        return null;
    }

    /**
     * Given an url, returns the PluginData of the first
     * UrlInterceptHandler interested, or null if none are or if
     * intercepts are disabled.
     *
     * @return A PluginData instance containing surrogate content.
     *
     * @deprecated This class was intended to be used by Gears. Since Gears was
     * deprecated, so is this class.
     */
    @Deprecated
    public static synchronized PluginData getPluginData(
            String url, Map<String, String> headers) {
        if (urlInterceptDisabled()) {
            return null;
        }
        Iterator iter = getHandlers().listIterator();
        while (iter.hasNext()) {
            UrlInterceptHandler handler = (UrlInterceptHandler) iter.next();
            PluginData data = handler.getPluginData(url, headers);
            if (data != null) {
                return data;
            }
        }
        return null;
    }
}

Other Android examples (source code examples)

Here is a short list of links related to this Android UrlInterceptRegistry.java source code file:

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