/*
 * Copyright (C) 2006 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 com.android.server.am;

import android.content.Context;
import android.content.Intent;
import android.os.IBinder;

import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Iterator;

/**
 * A particular Intent that has been bound to a Service.
 */
class IntentBindRecord {
    /** The running service. */
    final ServiceRecord service;
    /** The intent that is bound.*/
    final Intent.FilterComparison intent; // 
    /** All apps that have bound to this Intent. */
    final HashMap<ProcessRecord, AppBindRecord> apps
            = new HashMap<ProcessRecord, AppBindRecord>();
    /** Binder published from service. */
    IBinder binder;
    /** Set when we have initiated a request for this binder. */
    boolean requested;
    /** Set when we have received the requested binder. */
    boolean received;
    /** Set when we still need to tell the service all clients are unbound. */
    boolean hasBound;
    /** Set when the service's onUnbind() has asked to be told about new clients. */
    boolean doRebind;
    
    String stringName;      // caching of toString
    
    void dump(PrintWriter pw, String prefix) {
        pw.print(prefix); pw.print("service="); pw.println(service);
        dumpInService(pw, prefix);
    }

    void dumpInService(PrintWriter pw, String prefix) {
        pw.print(prefix); pw.print("intent={");
                pw.print(intent.getIntent().toShortString(false, true, false, false));
                pw.println('}');
        pw.print(prefix); pw.print("binder="); pw.println(binder);
        pw.print(prefix); pw.print("requested="); pw.print(requested);
                pw.print(" received="); pw.print(received);
                pw.print(" hasBound="); pw.print(hasBound);
                pw.print(" doRebind="); pw.println(doRebind);
        if (apps.size() > 0) {
            Iterator<AppBindRecord> it = apps.values().iterator();
            while (it.hasNext()) {
                AppBindRecord a = it.next();
                pw.print(prefix); pw.print("* Client AppBindRecord{");
                        pw.print(Integer.toHexString(System.identityHashCode(a)));
                        pw.print(' '); pw.print(a.client); pw.println('}');
                a.dumpInIntentBind(pw, prefix + "  ");
            }
        }
    }

    IntentBindRecord(ServiceRecord _service, Intent.FilterComparison _intent) {
        service = _service;
        intent = _intent;
    }

    int collectFlags() {
        int flags = 0;
        if (apps.size() > 0) {
            for (AppBindRecord app : apps.values()) {
                if (app.connections.size() > 0) {
                    for (ConnectionRecord conn : app.connections) {
                        flags |= conn.flags;
                    }
                }
            }
        }
        return flags;
    }

    public String toString() {
        if (stringName != null) {
            return stringName;
        }
        StringBuilder sb = new StringBuilder(128);
        sb.append("IntentBindRecord{");
        sb.append(Integer.toHexString(System.identityHashCode(this)));
        sb.append(' ');
        if ((collectFlags()&Context.BIND_AUTO_CREATE) != 0) {
            sb.append("CR ");
        }
        sb.append(service.shortName);
        sb.append(':');
        if (intent != null) {
            intent.getIntent().toShortString(sb, false, false, false, false);
        }
        sb.append('}');
        return stringName = sb.toString();
    }
}