001: /*
002: *
003: *
004: * Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
005: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
006: *
007: * This program is free software; you can redistribute it and/or
008: * modify it under the terms of the GNU General Public License version
009: * 2 only, as published by the Free Software Foundation.
010: *
011: * This program is distributed in the hope that it will be useful, but
012: * WITHOUT ANY WARRANTY; without even the implied warranty of
013: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014: * General Public License version 2 for more details (a copy is
015: * included at /legal/license.txt).
016: *
017: * You should have received a copy of the GNU General Public License
018: * version 2 along with this work; if not, write to the Free Software
019: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020: * 02110-1301 USA
021: *
022: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
023: * Clara, CA 95054 or visit www.sun.com if you need additional
024: * information or have any questions.
025: */
026:
027: package com.sun.midp.main;
028:
029: import com.sun.midp.events.EventTypes;
030: import com.sun.midp.events.NativeEvent;
031: import com.sun.midp.events.EventQueue;
032:
033: import com.sun.midp.security.Permissions;
034: import com.sun.midp.security.SecurityToken;
035:
036: /**
037: * This class provides methods to send events of types
038: * handled by MIDletExecuteEventConsumer I/F implementors.
039: * This class completely hide event construction & sending in its methods.
040: *
041: * The only user of this class in AppIsolateMIDletSuiteLoader in
042: * application isolate (when no midlets & no midlet suites exist).
043: *
044: * Generic comments for all XXXEventProducers:
045: *
046: * For each supported event type there is a separate sendXXXEvent() method,
047: * that gets all needed parameters to construct an event of an approprate class.
048: * The method also performs event sending itself.
049: *
050: * If a given event type merges a set of logically different subtypes,
051: * this class shall provide separate methods for these subtypes.
052: *
053: * It is assumed that only one object instance of this class (per isolate)
054: * is created at (isolate) startup.
055: * All MIDP stack subsystems that need to send events of supported types,
056: * must get a reference to an already created istance of this class.
057: * Typically, this instance should be passed as a constructor parameter.
058: *
059: * For security reasons constructor is not public.
060: * Use createXXXProducer(...) method,
061: * protected by security, to create and object instance of this class
062: * from a different package.
063: *
064: * Class is NOT final to allow debug/profile/test/automation subsystems
065: * to change, substitute, complement default "event sending" functionality :
066: * Ex.
067: * class LogXXXEventProducer
068: * extends XXXEventProducer {
069: * ...
070: * void sendXXXEvent(parameters) {
071: * LOG("Event of type XXX is about to be sent ...")
072: * super.sendXXXEvent(parameters);
073: * LOG("Event of type XXX has been sent successfully !")
074: * }
075: * ...
076: * }
077: */
078: public class MIDletExecuteEventProducer {
079:
080: /** Cached reference to the MIDP event queue. */
081: protected EventQueue eventQueue;
082: /** Cached reference to AMS isolate ID. */
083: protected int amsIsolateId;
084:
085: /**
086: * Construct a new MIDletExecuteEventProducer.
087: *
088: * @param token security token that controls instance creation.
089: * @param theEventQueue An event queue where new events will be posted.
090: * @param theAmsIsolateId AMS Isolate Id
091: */
092: public MIDletExecuteEventProducer(SecurityToken token,
093: EventQueue theEventQueue, int theAmsIsolateId) {
094:
095: token.checkIfPermissionAllowed(Permissions.MIDP);
096: eventQueue = theEventQueue;
097: amsIsolateId = theAmsIsolateId;
098: }
099:
100: /*
101: * MIDlet Execute Events:
102: *
103: * EXECUTE_MIDLET
104: */
105: /**
106: * Called to request MIDlet execution from non-AMS isolate
107: * NEW: earlier generated by AMSUtil.executeWithArgs(...)
108: *
109: * @param midletExternalAppId ID of MIDlet to invoke, given by an external
110: * application manager
111: * @param midletSuiteId ID of an installed suite
112: * @param midletClassName class name of MIDlet to invoke
113: * @param midletDisplayName name to display to the user
114: * @param arg0 if not null, this parameter will be available to the
115: * MIDlet as application property arg-0
116: * @param arg1 if not null, this parameter will be available to the
117: * MIDlet as application property arg-1
118: * @param arg2 if not null, this parameter will be available to the
119: * MIDlet as application property arg-2
120: * @param memoryReserved the minimum amount of memory guaranteed to be
121: * available to the isolate at any time; < 0 if not used
122: * @param memoryTotal the total amount of memory that the isolate can
123: reserve; < 0 if not used
124: * @param priority priority to set for the new isolate;
125: * <= 0 if not used
126: * @param profileName name of the profile to set for the new isolate;
127: * null if not used
128: */
129: public void sendMIDletExecuteEvent(int midletExternalAppId,
130: int midletSuiteId, String midletClassName,
131: String midletDisplayName, String arg0, String arg1,
132: String arg2, int memoryReserved, int memoryTotal,
133: int priority, String profileName) {
134:
135: NativeEvent event = new NativeEvent(
136: EventTypes.EXECUTE_MIDLET_EVENT);
137:
138: event.intParam1 = midletExternalAppId;
139: event.intParam2 = midletSuiteId;
140: event.intParam3 = memoryReserved;
141: event.intParam4 = memoryTotal;
142: event.intParam5 = priority;
143: event.stringParam1 = midletClassName;
144: event.stringParam2 = midletDisplayName;
145: event.stringParam3 = arg0;
146: event.stringParam4 = arg1;
147: event.stringParam5 = arg2;
148: event.stringParam6 = profileName;
149:
150: eventQueue.sendNativeEventToIsolate(event, amsIsolateId);
151: };
152: }
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