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annotate dwt/browser/SimpleEnumerator.d @ 286:44258e0b6687

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More fixes for xpcom
author John Reimer<terminal.node@gmail.com>
date Tue, 05 Aug 2008 10:11:58 -0700
parents 93409d9838c5
children bfe1c57259e3
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1 /*******************************************************************************
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2 * Copyright (c) 2003, 2007 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 *******************************************************************************/
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11 module dwt.browser.SimpleEnumerator;
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12
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13 import dwt.dwthelper.utils;
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14
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15 import dwt.internal.C;
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16 import dwt.internal.mozilla.XPCOM;
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17 import dwt.internal.mozilla.XPCOMObject;
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18 import dwt.internal.mozilla.nsID;
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19 import dwt.internal.mozilla.nsISimpleEnumerator;
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20 import dwt.internal.mozilla.nsISupports;
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21
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22 class SimpleEnumerator {
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23 XPCOMObject supports;
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24 XPCOMObject simpleEnumerator;
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25 int refCount = 0;
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26 nsISupports[] values;
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27 int index = 0;
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28
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29 SimpleEnumerator (nsISupports[] values) {
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30 this.values = values;
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31 for (int i = 0; i < values.length; i++) {
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32 values[i].AddRef ();
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33 }
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34 createCOMInterfaces ();
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35 }
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36
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37 int AddRef () {
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38 refCount++;
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39 return refCount;
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40 }
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41
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42 void createCOMInterfaces () {
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43 /* Create each of the interfaces that this object implements */
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44 supports = new XPCOMObject (new int[] {2, 0, 0}) {
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45 public int /*long*/ method0 (int /*long*/[] args) {return QueryInterface (args[0], args[1]);}
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46 public int /*long*/ method1 (int /*long*/[] args) {return AddRef ();}
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47 public int /*long*/ method2 (int /*long*/[] args) {return Release ();}
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48 };
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49
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50 simpleEnumerator = new XPCOMObject (new int[] {2, 0, 0, 1, 1}) {
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51 public int /*long*/ method0 (int /*long*/[] args) {return QueryInterface (args[0], args[1]);}
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52 public int /*long*/ method1 (int /*long*/[] args) {return AddRef ();}
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53 public int /*long*/ method2 (int /*long*/[] args) {return Release ();}
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54 public int /*long*/ method3 (int /*long*/[] args) {return HasMoreElements (args[0]);}
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55 public int /*long*/ method4 (int /*long*/[] args) {return GetNext (args[0]);}
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56 };
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57 }
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58
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59 void disposeCOMInterfaces () {
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60 if (supports !is null) {
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61 supports.dispose ();
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62 supports = null;
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63 }
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64 if (simpleEnumerator !is null) {
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65 simpleEnumerator.dispose ();
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66 simpleEnumerator = null;
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67 }
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68 if (values !is null) {
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69 for (int i = 0; i < values.length; i++) {
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70 values[i].Release ();
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71 }
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72 values = null;
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73 }
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74 }
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75
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76 int /*long*/ getAddress () {
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77 return simpleEnumerator.getAddress ();
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78 }
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79
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80 int QueryInterface (int /*long*/ riid, int /*long*/ ppvObject) {
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81 if (riid is 0 || ppvObject is 0) return XPCOM.NS_ERROR_NO_INTERFACE;
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82 nsID guid = new nsID ();
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83 XPCOM.memmove (guid, riid, nsID.sizeof);
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84
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85 if (guid.Equals (nsISupports.NS_ISUPPORTS_IID)) {
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86 XPCOM.memmove (ppvObject, new int /*long*/[] {supports.getAddress ()}, C.PTR_SIZEOF);
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87 AddRef ();
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88 return XPCOM.NS_OK;
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89 }
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90 if (guid.Equals (nsISimpleEnumerator.NS_ISIMPLEENUMERATOR_IID)) {
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91 XPCOM.memmove (ppvObject, new int /*long*/[] {simpleEnumerator.getAddress ()}, C.PTR_SIZEOF);
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92 AddRef ();
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93 return XPCOM.NS_OK;
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94 }
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95
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96 XPCOM.memmove (ppvObject, new int /*long*/[] {0}, C.PTR_SIZEOF);
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97 return XPCOM.NS_ERROR_NO_INTERFACE;
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98 }
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99
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100 int Release () {
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101 refCount--;
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102 if (refCount is 0) disposeCOMInterfaces ();
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103 return refCount;
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104 }
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105
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106 int HasMoreElements (int /*long*/ _retval) {
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107 bool more = values !is null && index < values.length;
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108 XPCOM.memmove (_retval, new int[] {more ? 1 : 0}, 4); /*PRBool */
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109 return XPCOM.NS_OK;
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110 }
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111
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112 int GetNext (int /*long*/ _retval) {
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113 if (values is null || index is values.length) return XPCOM.NS_ERROR_UNEXPECTED;
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114 nsISupports value = values[index++];
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115 value.AddRef ();
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116 XPCOM.memmove (_retval, new int /*long*/[] {value.getAddress ()}, C.PTR_SIZEOF);
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117 return XPCOM.NS_OK;
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118 }
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119 }
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120