|
1 /* |
|
2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: Primary datatype for the entire Document Object Model. |
|
15 * |
|
16 */ |
|
17 |
|
18 |
|
19 |
|
20 #ifndef hsps_DOM_NODE_H |
|
21 #define hsps_DOM_NODE_H |
|
22 |
|
23 // INCLUDES |
|
24 #include <e32base.h> |
|
25 #include <s32strm.h> |
|
26 #include "mhspsdomlistitem.h" |
|
27 |
|
28 // FORWARD DECLARATIONS |
|
29 enum TContentType |
|
30 { |
|
31 EEmpty = 0, |
|
32 EAny, |
|
33 EPCData |
|
34 }; |
|
35 |
|
36 class ChspsDomList; |
|
37 class ChspsDomStringPool; |
|
38 class ChspsNode; |
|
39 |
|
40 // CLASS DECLARATION |
|
41 |
|
42 /** |
|
43 * Class represents a single node in the document tree. |
|
44 * |
|
45 * @lib hspsdomdocument.lib |
|
46 * @since S60 5.0 |
|
47 * @ingroup group_hspsdom |
|
48 */ |
|
49 class ChspsDomNode : public CBase, public MhspsDomListItem |
|
50 { |
|
51 |
|
52 public: // Constructors and destructor |
|
53 |
|
54 /** |
|
55 * Two-phased constructor. |
|
56 * |
|
57 * @since S60 5.0 |
|
58 * @param aName Name of node. |
|
59 * @param aNS Namespace. |
|
60 * @param aStringPool Attached string pool. |
|
61 */ |
|
62 static ChspsDomNode* NewL( |
|
63 const TDesC8& aName, |
|
64 const TDesC8& aNS, |
|
65 ChspsDomStringPool& aStringPool ); |
|
66 |
|
67 /** |
|
68 * Two-phased constructor. |
|
69 * |
|
70 * @since S60 5.0 |
|
71 * @param aName Name of node (string pool index). |
|
72 * @param aNS Namespace (string pool index). |
|
73 * @param aStringPool Attached string pool. |
|
74 */ |
|
75 static ChspsDomNode* NewL( |
|
76 const TInt aName, |
|
77 const TInt aNS, |
|
78 ChspsDomStringPool& aStringPool ); |
|
79 |
|
80 /** |
|
81 * Two-phased stream constructor. |
|
82 * |
|
83 * @since S60 5.0 |
|
84 * @param aStream Source stream. |
|
85 * @param aStringPool Attached string pool. |
|
86 */ |
|
87 static ChspsDomNode* NewL( RReadStream& aStream, ChspsDomStringPool& aStringPool ); |
|
88 |
|
89 /** |
|
90 * Destructor. |
|
91 */ |
|
92 virtual ~ChspsDomNode(); |
|
93 |
|
94 public: // New functions |
|
95 /** |
|
96 * Makes a clone from this node and it's child nodes. |
|
97 * |
|
98 * @since S60 5.0 |
|
99 * @param aStringPool A new string pool. |
|
100 * @param aFastClone If ETrue, then fast mode cloning is used. |
|
101 * |
|
102 * @return Pointer to a clone node. Caller has the ownership. |
|
103 */ |
|
104 IMPORT_C ChspsDomNode* CloneL( ChspsDomStringPool& aStringPool, |
|
105 const TBool aFastClone = EFalse ); |
|
106 |
|
107 /** |
|
108 * Makes a clone only from this node. |
|
109 * |
|
110 * @since S60 5.0 |
|
111 * @param aStringPool A new string pool. |
|
112 * @return Pointer to a clone node. Caller has the ownership. |
|
113 */ |
|
114 IMPORT_C ChspsDomNode* CloneWithoutKidsL( ChspsDomStringPool& aStringPool ); |
|
115 |
|
116 /** |
|
117 * Contructs a ref node from this node and its child's. |
|
118 * |
|
119 * @since S60 5.0 |
|
120 * @return Pointer to a ref node. Caller has the ownership. |
|
121 */ |
|
122 IMPORT_C ChspsDomNode* CreateRefNodeL(); |
|
123 |
|
124 /** |
|
125 * Get the namespace of this node. |
|
126 * |
|
127 * @since S60 5.0 |
|
128 * @return Pointer to the namespace buffer. |
|
129 */ |
|
130 IMPORT_C const TDesC8& Namespace(); |
|
131 |
|
132 /** |
|
133 * Node's attributes exist in a list. |
|
134 * |
|
135 * @since S60 5.0 |
|
136 * @return Reference to a attribute list. |
|
137 */ |
|
138 IMPORT_C ChspsDomList& AttributeList()const; |
|
139 |
|
140 /** |
|
141 * Node need to know it's parent. |
|
142 * |
|
143 * @since S60 5.0 |
|
144 * @param aParent Pointer to this node parent. |
|
145 */ |
|
146 IMPORT_C void SetParent( ChspsDomNode* aParent ); |
|
147 |
|
148 /** |
|
149 * Node's parent is enquered e.g to traverse the document. |
|
150 * |
|
151 * @since S60 5.0 |
|
152 * @return Pointer to a parent node. |
|
153 */ |
|
154 IMPORT_C ChspsDomNode* Parent() const; |
|
155 |
|
156 /** |
|
157 * Node id is for a uiengine use. |
|
158 * |
|
159 * @since S60 5.0 |
|
160 * @param aNodeId Unique identifier. |
|
161 */ |
|
162 IMPORT_C void SetNodeId( const TInt aNodeId ); |
|
163 |
|
164 /** |
|
165 * Get the node unique identifier. |
|
166 * |
|
167 * @since S60 5.0 |
|
168 * @return Node unique identifier. |
|
169 */ |
|
170 IMPORT_C TInt NodeId() const; |
|
171 |
|
172 /** |
|
173 * Get the node unique identifier. |
|
174 * |
|
175 * @since S60 5.0 |
|
176 * @return Node unique identifier. |
|
177 */ |
|
178 IMPORT_C TInt ItemIndex( const MhspsDomListItem& aItem )const; |
|
179 |
|
180 /** |
|
181 * Access to child nodes. |
|
182 * |
|
183 * @since S60 5.0 |
|
184 * @return Pointer to a list of child nodes. |
|
185 */ |
|
186 IMPORT_C ChspsDomList& ChildNodes(); |
|
187 |
|
188 /** |
|
189 * Child nodes of this node are needed to be able to |
|
190 * traverse the document. |
|
191 * |
|
192 * @since S60 5.0 |
|
193 * @param aNode Node owns it's childs. |
|
194 */ |
|
195 IMPORT_C void AddChildL( ChspsDomNode* aNode ); |
|
196 |
|
197 /** |
|
198 * Child nodes of this node are needed to be able to |
|
199 * traverse the document. |
|
200 * |
|
201 * @since S60 5.0 |
|
202 * @param aNode Node owns it's childs. |
|
203 * @param aIndex Index in list where the node is added. |
|
204 */ |
|
205 IMPORT_C void AddChildL( ChspsDomNode* aNode, TInt aIndex ); |
|
206 |
|
207 /** |
|
208 * Removes node from the child list and frees memory allocated |
|
209 * for a child node and it descendants. |
|
210 * |
|
211 * @since S60 5.0 |
|
212 * @param aNode Node to be released. |
|
213 */ |
|
214 IMPORT_C void DeleteChild( ChspsDomNode* aNode ); |
|
215 |
|
216 /** |
|
217 * Replaces a child node with the other node. Memory allocated for |
|
218 * the node is freed. |
|
219 * |
|
220 * @since S60 5.0 |
|
221 * @param aNode Node to be replaced. |
|
222 * @param aNewNode New node. |
|
223 */ |
|
224 IMPORT_C void ReplaceChildL( ChspsDomNode* aNode, ChspsDomNode* aNewNode ); |
|
225 |
|
226 /** |
|
227 * Get the character data. |
|
228 * |
|
229 * @since S60 5.0 |
|
230 * @return Reference to a buffer. |
|
231 */ |
|
232 IMPORT_C const TDesC8& PCData(); |
|
233 |
|
234 /** |
|
235 * Append PCData into node. Thus it is possible to have |
|
236 * "<root>a <first/> c <second/> e </root>" PCData. |
|
237 * |
|
238 * @since S60 5.0 |
|
239 * @param aPCData UTF-8 encoded parsed character data. |
|
240 */ |
|
241 IMPORT_C void AppendPCDataL( const TDesC8& aPCData ); |
|
242 |
|
243 /** |
|
244 * Set parsed character data. |
|
245 * |
|
246 * @since S60 5.0 |
|
247 * @param aPCData UTF-8 encoded parsed character data. |
|
248 */ |
|
249 IMPORT_C void SetPCDataL( const TDesC8& aPCData ); |
|
250 |
|
251 /** |
|
252 * Set content type. |
|
253 * |
|
254 * @since S60 5.0 |
|
255 * @return content type. |
|
256 */ |
|
257 IMPORT_C const TContentType& ContentType(); |
|
258 |
|
259 /** |
|
260 * Get content type. |
|
261 * |
|
262 * @since S60 5.0 |
|
263 * @param aContentType content type. |
|
264 */ |
|
265 IMPORT_C void SetContentType( const TContentType& aContentType ); |
|
266 |
|
267 /** |
|
268 * Recursive function to count all child nodes belonging |
|
269 * to this node. |
|
270 * |
|
271 * @since S60 5.0 |
|
272 * @return This node and it's all childs count. |
|
273 */ |
|
274 IMPORT_C TInt DescendantCount() const; |
|
275 |
|
276 /** |
|
277 * Get reference to the dom's string pool. |
|
278 * |
|
279 * @since S60 5.0 |
|
280 * @return Reference to string pool. |
|
281 */ |
|
282 IMPORT_C ChspsDomStringPool& StringPool() const; |
|
283 |
|
284 /** |
|
285 * Mark this node as a reference node. |
|
286 * |
|
287 * @since S60 5.0 |
|
288 * @param aRefNode ETrue if node is a reference node. |
|
289 */ |
|
290 IMPORT_C void SetRefNode( TBool aRefNode=ETrue ); |
|
291 |
|
292 /** |
|
293 * Check if this node is referring to some global node. |
|
294 * |
|
295 * @since S60 5.0 |
|
296 * @return ETrue if this is a reference node. |
|
297 */ |
|
298 IMPORT_C TBool IsRefNode() const; |
|
299 |
|
300 /** |
|
301 * Deletes attributes when they are not needed anymore. |
|
302 * I.e. UIEngine has copied them into property list. |
|
303 * |
|
304 * @since S60 5.0 |
|
305 */ |
|
306 IMPORT_C void DeleteAttributeList(); |
|
307 |
|
308 /** |
|
309 * Returns value of given attribute. |
|
310 * |
|
311 * @param aAttribute Name of the attribute. |
|
312 * @since S60 5.0 |
|
313 * @return Value of an attribute. |
|
314 */ |
|
315 IMPORT_C const TDesC8& AttributeValue(const TDesC8& aAttribute) const; |
|
316 |
|
317 public: //From MhspsDomListItem |
|
318 |
|
319 /** |
|
320 * Documented in ChspsDomListItem::Size |
|
321 */ |
|
322 TInt Size() const; |
|
323 |
|
324 /** |
|
325 * Documented in ChspsDomListItem::ExternalizeL |
|
326 */ |
|
327 void ExternalizeL( RWriteStream& aStream ) const; |
|
328 |
|
329 /** |
|
330 * Documented in ChspsDomListItem::InternalizeL |
|
331 */ |
|
332 void InternalizeL( RReadStream& aStream ); |
|
333 |
|
334 |
|
335 /** |
|
336 * Documented in ChspsDomListItem::Name |
|
337 */ |
|
338 IMPORT_C const TDesC8& Name(); |
|
339 |
|
340 public: |
|
341 |
|
342 /** |
|
343 * Sets pointer to associated layout node. |
|
344 * |
|
345 * @since S60 5.0 |
|
346 * @param aNode Pointer to associated layout node. |
|
347 */ |
|
348 IMPORT_C void SetLayoutNode(ChspsNode* aNode); |
|
349 |
|
350 /** |
|
351 * Returns pointer to associated layout node. |
|
352 * |
|
353 * @since S60 5.0 |
|
354 * @return Pointer to associated layout node. |
|
355 */ |
|
356 IMPORT_C ChspsNode* LayoutNode(); |
|
357 private: |
|
358 /** |
|
359 * C++ default constructor. |
|
360 */ |
|
361 ChspsDomNode( ChspsDomStringPool& aStringPool ); |
|
362 |
|
363 /** |
|
364 * By default Symbian 2nd phase constructor is private. |
|
365 */ |
|
366 void ConstructL( const TDesC8& aName, const TDesC8& aNS ); |
|
367 |
|
368 /** |
|
369 * By default Symbian 2nd phase constructor is private. |
|
370 */ |
|
371 void ConstructL( const TInt aName, const TInt aNS ); |
|
372 |
|
373 /** |
|
374 * Construct members |
|
375 */ |
|
376 void Construct2L(); |
|
377 |
|
378 private: // Data |
|
379 |
|
380 //iNameRef refers to a name string in a string pool |
|
381 TInt iNameRef; |
|
382 |
|
383 //iNSRef refers to a namespace string in a string pool |
|
384 TInt iNSRef; |
|
385 |
|
386 //iStringPool is used to resolve strings based on references |
|
387 ChspsDomStringPool& iStringPool; |
|
388 |
|
389 //Type of the elements content |
|
390 TContentType iContentType; |
|
391 |
|
392 //Parsed character data |
|
393 HBufC8* iPCData; |
|
394 |
|
395 //Node's parent pointer |
|
396 ChspsDomNode* iParentNode; |
|
397 |
|
398 //Node unique identifier |
|
399 TInt iNodeId; |
|
400 |
|
401 //Node's childs are collected into a list. Childs are owned by node |
|
402 ChspsDomList* iChildList; |
|
403 |
|
404 //Node is the owner of the attributes |
|
405 ChspsDomList* iAttributeList; |
|
406 |
|
407 //Flag is set if this node is reference node |
|
408 TBool iRefNode; |
|
409 |
|
410 // Not owned |
|
411 ChspsNode* iLayoutNode; |
|
412 }; |
|
413 |
|
414 #endif // hsps_DOM_NODE_H |
|
415 |
|
416 // End of File |