1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is Mozilla Communicator client code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Netscape Communications Corporation.
19 : * Portions created by the Initial Developer are Copyright (C) 1998
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * David Hyatt <hyatt@netscape.com> (Original Author)
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either of the GNU General Public License Version 2 or later (the "GPL"),
27 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
29 : * of those above. If you wish to allow use of your version of this file only
30 : * under the terms of either the GPL or the LGPL, and not to allow others to
31 : * use your version of this file under the terms of the MPL, indicate your
32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
35 : * the terms of any one of the MPL, the GPL or the LGPL.
36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : #ifndef nsXBLProtoImplMethod_h__
40 : #define nsXBLProtoImplMethod_h__
41 :
42 : #include "nsIAtom.h"
43 : #include "nsString.h"
44 : #include "jsapi.h"
45 : #include "nsIContent.h"
46 : #include "nsString.h"
47 : #include "nsXBLProtoImplMember.h"
48 : #include "nsXBLSerialize.h"
49 :
50 : struct nsXBLParameter {
51 : nsXBLParameter* mNext;
52 : char* mName;
53 :
54 0 : nsXBLParameter(const nsAString& aName) {
55 0 : MOZ_COUNT_CTOR(nsXBLParameter);
56 0 : mName = ToNewCString(aName);
57 0 : mNext = nsnull;
58 0 : }
59 :
60 0 : ~nsXBLParameter() {
61 0 : MOZ_COUNT_DTOR(nsXBLParameter);
62 0 : nsMemory::Free(mName);
63 0 : NS_CONTENT_DELETE_LIST_MEMBER(nsXBLParameter, this, mNext);
64 0 : }
65 : };
66 :
67 : struct nsXBLUncompiledMethod {
68 : nsXBLParameter* mParameters;
69 : nsXBLParameter* mLastParameter;
70 : nsXBLTextWithLineNumber mBodyText;
71 :
72 0 : nsXBLUncompiledMethod() :
73 : mParameters(nsnull),
74 : mLastParameter(nsnull),
75 0 : mBodyText()
76 : {
77 0 : MOZ_COUNT_CTOR(nsXBLUncompiledMethod);
78 0 : }
79 :
80 0 : ~nsXBLUncompiledMethod() {
81 0 : MOZ_COUNT_DTOR(nsXBLUncompiledMethod);
82 0 : delete mParameters;
83 0 : }
84 :
85 0 : PRInt32 GetParameterCount() {
86 0 : PRInt32 result = 0;
87 0 : for (nsXBLParameter* curr = mParameters; curr; curr=curr->mNext)
88 0 : result++;
89 0 : return result;
90 : }
91 :
92 0 : void AppendBodyText(const nsAString& aText) {
93 0 : mBodyText.AppendText(aText);
94 0 : }
95 :
96 0 : void AddParameter(const nsAString& aText) {
97 0 : nsXBLParameter* param = new nsXBLParameter(aText);
98 0 : if (!param)
99 0 : return;
100 0 : if (!mParameters)
101 0 : mParameters = param;
102 : else
103 0 : mLastParameter->mNext = param;
104 0 : mLastParameter = param;
105 : }
106 :
107 0 : void SetLineNumber(PRUint32 aLineNumber) {
108 0 : mBodyText.SetLineNumber(aLineNumber);
109 0 : }
110 : };
111 :
112 : class nsXBLProtoImplMethod: public nsXBLProtoImplMember
113 : {
114 : public:
115 : nsXBLProtoImplMethod(const PRUnichar* aName);
116 : virtual ~nsXBLProtoImplMethod();
117 :
118 : void AppendBodyText(const nsAString& aBody);
119 : void AddParameter(const nsAString& aName);
120 :
121 : void SetLineNumber(PRUint32 aLineNumber);
122 :
123 : virtual nsresult InstallMember(nsIScriptContext* aContext,
124 : nsIContent* aBoundElement,
125 : void* aScriptObject,
126 : void* aTargetClassObject,
127 : const nsCString& aClassStr);
128 : virtual nsresult CompileMember(nsIScriptContext* aContext,
129 : const nsCString& aClassStr,
130 : JSObject* aClassObject);
131 :
132 : virtual void Trace(TraceCallback aCallback, void *aClosure) const;
133 :
134 : nsresult Read(nsIScriptContext* aContext, nsIObjectInputStream* aStream);
135 : virtual nsresult Write(nsIScriptContext* aContext, nsIObjectOutputStream* aStream);
136 :
137 0 : bool IsCompiled() const
138 : {
139 0 : return !(mUncompiledMethod & BIT_UNCOMPILED);
140 : }
141 0 : void SetUncompiledMethod(nsXBLUncompiledMethod* aUncompiledMethod)
142 : {
143 0 : mUncompiledMethod = PRUptrdiff(aUncompiledMethod) | BIT_UNCOMPILED;
144 0 : }
145 0 : nsXBLUncompiledMethod* GetUncompiledMethod() const
146 : {
147 0 : PRUptrdiff unmasked = mUncompiledMethod & ~BIT_UNCOMPILED;
148 0 : return reinterpret_cast<nsXBLUncompiledMethod*>(unmasked);
149 : }
150 :
151 : protected:
152 : enum { BIT_UNCOMPILED = 1 << 0 };
153 :
154 : union {
155 : PRUptrdiff mUncompiledMethod; // An object that represents the method before being compiled.
156 : JSObject* mJSMethodObject; // The JS object for the method (after compilation)
157 : };
158 :
159 : #ifdef DEBUG
160 : bool mIsCompiled;
161 : #endif
162 : };
163 :
164 0 : class nsXBLProtoImplAnonymousMethod : public nsXBLProtoImplMethod {
165 : public:
166 0 : nsXBLProtoImplAnonymousMethod() :
167 0 : nsXBLProtoImplMethod(EmptyString().get())
168 0 : {}
169 :
170 : nsresult Execute(nsIContent* aBoundElement);
171 :
172 : // Override InstallMember; these methods never get installed as members on
173 : // binding instantiations (though they may hang out in mMembers on the
174 : // prototype implementation).
175 0 : virtual nsresult InstallMember(nsIScriptContext* aContext,
176 : nsIContent* aBoundElement,
177 : void* aScriptObject,
178 : void* aTargetClassObject,
179 : const nsCString& aClassStr) {
180 0 : return NS_OK;
181 : }
182 :
183 : using nsXBLProtoImplMethod::Write;
184 : nsresult Write(nsIScriptContext* aContext,
185 : nsIObjectOutputStream* aStream,
186 : XBLBindingSerializeDetails aType);
187 : };
188 :
189 : #endif // nsXBLProtoImplMethod_h__
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