summaryrefslogtreecommitdiffstats
path: root/quanta/parts/kafka/wkafkapart.h
blob: 6c52d3070fa2ec5bece89c553dad2263d7e54e7a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
/***************************************************************************
                               wkafkapart.h
                             -------------------

    copyright            : (C) 2003, 2004 - Nicolas Deschildre
    email                : ndeschildre@tdewebdev.org
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef WKAFKAPART_H
#define WKAFKAPART_H

class TDEConfig;
namespace DOM
{
	class Node;
}

class Document;
class Node;
class Parser;
class kNodeAttrs;
class NodeModifsSet;
class NodeEnhancer;
struct DTDStruct;
class NodeSelectionInd;
class NodeModifsSet;

#include <tqmap.h>
#include <tqobject.h>
#include <tqptrdict.h>

#include "kafkahtmlpart.h"

/**
 * This class assures the synchronisation of the two trees : the quanta and the
 * kafka tree.
 * By Quanta Node, i mean Node (cf quanta/parser/node.h)
 * By Kafka Node, i mean DOM::Node (cf <dom/dom_node.h>)
 * It is a singleton class.
 */
class KafkaDocument : public TQObject
{
Q_OBJECT
  
public:
        /** Returns a reference to the KafkaDocument object */
        static KafkaDocument* const ref(TQWidget *parent = 0L, TQWidget *widgetParent = 0L, const char *name = 0L)
        {
          static KafkaDocument *m_ref;
          if (!m_ref) m_ref = new KafkaDocument(parent, widgetParent, name);
          return m_ref;
        }

	~KafkaDocument();


	/* ----------------------------- LOADING/UNLOADING -----------------------------------------*/

	/**
	 * Builds kafka's own tree from the Quanta tree.
	 * If the current Document is empty, it will create a minimum tree.
	 * @param the Document we want to load.
	 */
	void loadDocument(Document *doc);

	/**
	 * Unloads the kafka tree.
	 */
	void unloadDocument();

	/**
	 * Reloads the Document.
	 */
	void reloadDocument();

	/**
	 * Called to get KafkaDocument's state.
	 * @return Returns true if KafkaDocument is loaded.
	 */
	bool isLoaded() {return _docLoaded;}


	/* ----------------------------------- KAFKA<->QUANTA NODES LINK ----------------------------------*/

	/**
	 * @param _node The DOM::Node we want the attributess.
	 * @return Return the corresponding kNodeAttrs of the DOM::Node.
	 */
	kNodeAttrs *getAttrs(DOM::Node _domNode);

	/**
	 * This function search the corresponding quanta Node to the kafka DOM::Node
	 * @param _domNode The DOM::Node we seek its corresponding Node.
	 * @return The Node corresponding to _domNode.
	 */
	Node *getNode(DOM::Node _domNode);

	/**
	 * Connects the domNode to the corresponding Quanta Node with an intermediate class :
	 * a kNodeAttrs which links the node and the DOM::Node.
	 * This is MANDATORY, even if node is null, to use this function at each
	 * DOM::Node insertion !!
	 * @param domNode The DOM::Node to connect to the Node.
	 * @param node The Node to connect to the DOM::Node. Can be null.
	 * @return Returns the kNodeAttr which links them.
	 */
	kNodeAttrs* connectDomNodeToQuantaNode(DOM::Node domNode, Node *node);

	/**
	 * Disconnects the domNode from its corresponding Quanta Node.
	 * @param _domNode The DOM::Node to disconnect from its Node.
	 */
	void disconnectDomNodeFromQuantaNode(DOM::Node _domNode);

	/**
	 * Disconnects all the domNode from their Quanta Node.
	 */
	void disconnectAllDomNodes();
                
        
    /* --------------------------- CURSOR AND SELECTION  HANDLING --------------------------*/

        /**
         * Set the cursor and selection coordinates.
         * @param nodeSelection The coordinates of the selection and cursor.
         */
        void setCursorAndSelection(NodeSelectionInd *nodeSelection);
         
        void setCursor(Node* node, int cursorOffset);

	/* --------------------------- KAFKA/QUANTA NODES CREATION -----------------------------*/

	/**
	 * This function build a kafka DOM:::Node from a Quanta Node.
	 * @param _node The node from which we build the DOM::Node
	 * @param insertNode Specifies if we should insert the Node.
	 * @return Returns if the insertion was successful if asked, else true.
	 */
	bool buildKafkaNodeFromNode(Node *_node, bool insertNode = true);

	/**
	 * This function synchronizes the Node from the DOM::Node. If the Node is a text Node,
	 * we try to keep its indentation while updating it.
	 * @param node The Node to synchronize.
	 * @param domNode The Node is synchronized from this DOM::Node.
	 */
	void buildNodeFromKafkaNode(Node *node, DOM::Node domNode);

	/**
	 * This function creates and synchronize a Node from the DOM::Node. It adds
	 * the closing Node if necessary, and the node and its closing Node can surround Nodes
	 * and thus make them its childs. Usefull when adding a Node on a selected range of Nodes.
	 * It also create empty Nodes between Nodes.
	 * @param domNode The Node returned is synchronized from this DOM::Node.
	 * @param nodeParent The parent Node of the Node returned.
	 * @param beginNode The new Node will be placed before or within _beginNode.
	 * @param beginOffset NOT IMLEMENTED If set to 0 or -1, the new Node will be placed before _beginNode,
	 * else _beginNode will be splitted at offset #beginOffset and the new Node will be placed
	 * inbetween.
	 * @param endNode NOT IMPLEMENTED If not null and if the new Node has a closing tag, set the closing node
	 * after or within endNode.
	 * @param endOffset NOT IMPLEMENTED If set to -1, the closing node will be placed after _endNode, else _endNode
	 * will be splitted at offset #endOffset and the closing Node will be placed inbetween.
	 * @param modifs The NodeModifSet to log the changes made.
	 * @return Returns the new main Node created from the DOM::Node.
	*/
	Node * buildNodeFromKafkaNode(DOM::Node domNode, Node *nodeParent,
		Node *beginNode, int beginOffset, Node *endNode, int endOffset,
		NodeModifsSet *modifs);


	/* ------------------------------- TEXT ENTITIES ENCODING/DECODING ---------------------*/

	/**
	 * This function returns the special XML character (e.g. space, �...)
	 * from its encoded form (e.g. &nbsp;)
	 * @return Returns the special character.
	 */
	TQString getDecodedChar(const TQString &encodedChar);

	/**
	 * This function returns the text decoded from its XML-encoded form.
	 * @param encodedText The text to decode.
	 * @param translateWhiteSpacesAndLineBreaks Specifies if whiteSpaces and line breaks should be
	 * compressed. Set it to false if we are inside PRE tag.
	 * @param removeLeftWhitespaces Specify if we should remove ALL whitespaces at the left of the string
	 * e.g. if the current text is the first child of a BLOCK Node (e.g. P)
	 * @param removeLeftWhitespaces Specify if we should remove ALL whitespaces at the right of the string
	 * e.g. if the current text is the last child of a BLOCK Node (e.g. P)
	 * @return Returns the text decoded.
	 */
	TQString getDecodedText(const TQString &encodedText, bool translateWhiteSpacesAndLineBreaks = true,
		bool removeLeftWhitespaces = false, bool removeRightWhitespaces = false);

	/**
	 * This function returns the XML-encoded character (e.g. &nbsp;)
	 * from the XML special character (e.g. space, �...)
	 * @param decodedChar The character to encode.
	 * @param previousDecodedchar The previous decoded character.
	 * @return Returns the XML-encoded character.
	 */
	TQString getEncodedChar(const TQString &decodedChar, const TQString &previousDecodedChar);

	/**
	 * This function returns the text with all the special XML characters encoded.
	 * @param decodedText The text to encode.
	 * @param bLine The start line of the returned encoded text.
	 * @param bCol The start col of the returned encoded text.
	 * @param eLine Returns the end line of the returned encoded text.
	 * @param eCol Returns the end col of the return encoded text.
	 * @param translateWhiteSpaces Specifies if we should translate the whitespaces
	 * into &nbsp; Set it to false for PRE Tag.
	 * @return Return the XML-encoded text.
	 */
	TQString getEncodedText(const TQString &decodedText, int bLine, int bCol, int &eLine, int &eCol,
		bool translateWhiteSpaces = true);

	/**
	 * This function behaves essentially like the above function except that it doesn't
	 * return the position of the encoded text.
	 */
	TQString getEncodedText(const TQString &decodedText);

	/**
	 * This function generates the code corresponding to the XML node.
	 * @param _node The Node we want to generate its code.
	 * @param bLine The start line of the returned generated code.
	 * @param bCol The start col of the returned generated code.
	 * @param eLine Returns the end line of the returned generated code.
	 * @param eCol Returns the end col of the return generated code.
         * @param encodeText Specify, if node is a Text Node, if we should encode the text 
         * (e.g. whitespace => &nbsp;)
	 * @return Returns the code.
	 */
	TQString generateCodeFromNode(Node *node, int bLine, int bCol, int &eLine, int &eCol, 
          bool encodeText = true);


	/* ------------------------- KAFKA<->QUANTA POSITION TRANSLATION -------------------------------*/

	/**
	 * Returns the kafka cursor position corresponding to the quanta cursor position.
	 * @param line The quanta line cursor position.
	 * @param col The quanta column cursor position.
	 * @param domNode Returns the DOM::Node in which the cursor is located.
	 * @param offset Returns the offset of the cursor.
	 */
	void translateQuantaIntoKafkaCursorPosition(uint line, uint col, DOM::Node &domNode, long &offset);
        
        /**
         * Returns the internal Node offset corresponding to the Quanta cursor position.
         * @param line The quanta line cursor position.
         * @param col The quanta column cursor position.
         * @param node Returns the node where is located the node internal offset.
         * @param offset Returns the node internal corresponding offset.
         */
    void translateQuantaIntoNodeCursorPosition(uint line, uint col, Node **node, long &offset);

	/**
	 * Returns the internal Node offset corresponding to the kafka cursor position.
	 * @param domNode The kafka DOM::Node cursor position.
	 * @param domNodeOffset The kafka offset cursor position.
         * @param node Returns the node where is located the node internal offset.
         * @param offset Returns the node internal corresponding offset.
	 */
	void translateKafkaIntoNodeCursorPosition(DOM::Node domNode, long domNodeOffset, Node **node, long &offset);

	/**
	 * Returns the quanta cursor position corresponding to the kafka cursor position.
	 * @param domNode The kafka DOM::Node cursor position.
	 * @param offset The kafka offset cursor position.
	 * @param line Returns the line cursor position.
	 * @param col Returns the col cursor position.
	 */
	void translateKafkaIntoQuantaCursorPosition(DOM::Node domNode, int offset, int &line, int &col);

	/**
	 * Returns the kafka cursor position corresponding to the internal Node offset.
	 * @param node The node.
	 * @param offset The internal offset of Node.
	 * @param domNode Returns the corresponding DOM::Node of node. Can be null.
	 * @param domNodeOffset Returns the offset inside the DOM::Node.
	 */
	void translateNodeIntoKafkaCursorPosition(Node *node, int offset, DOM::Node &domNode,
		long &domNodeOffset);
                
        /**
         * Returns the quanta cursor position corresponding to the internal Node offset.
         * @param node The node.
         * @param offset The internal offset of Node.
         * @param line Returns the line position of the corresponding Quanta cursor.
         * @param col Returns the col position of the corresponding Quanta cursor.
         */      
        void translateNodeIntoQuantaCursorPosition(Node *node, int offset, uint &line, uint &col);
         

	/** ----------------- DOM::NODE TREE MODIFICATIONS --------------------*/

	/**
	 * Insert a DOM::Node in the DOM::Node tree. It takes care to handle the exceptions and
	 * to postEnhance (cf htmlenhancer.h)
	 * @param node The node to insert.
	 * @param parent The new parent of node. If null, insert node at the top level.
	 * @param nextSibling The new next sibling of node. If null, append node at the end of the child list.
	 * @param rootNode The root DOM::Node of the DOM::Node tree. Useful when no parent is provided.
	 * @return Returns true if the operation was successfull.
	 */
	bool insertDomNode(DOM::Node node, DOM::Node parent = DOM::Node(),
		DOM::Node nextSibling = DOM::Node(), DOM::Node rootNode = DOM::Node());


	/**
	 * Removes a DOM::Node from the DOM::Node Tree. It takes care to handle the exceptions
	 * and to postUnenhance (cf htmlenhancer.h)
	 * @param node The Node to remove from the tree.
	 * @retun Returns true if the operation was successfull..
	 */
	bool removeDomNode(DOM::Node node);


	/** ------------------ DOM::NODE TREE NAVIGATION -----------------------------------------*/

	/**
	 * @param domNode The DOM::Node the search starts from.
	 * @return Returns the next previous sibling which has no special behavior (cf htmlenhancer.h)
	 * Sibling here (contrary to node.h) has the same meaning as in dom/dom_node.h
	 */
	DOM::Node getPrevSiblingNSpecial(DOM::Node domNode);

	/**
	 * @param domNode The DOM::Node the search starts from.
	 * @return Returns the next next sibling which has no special behavior (cf htmlenhancer.h)
	 * Sibling here (contrary to node.h) has the same meaning as in dom/dom_node.h
	 */
	DOM::Node getNextSiblingNSpecial(DOM::Node domNode);

	/* --------------------------------- MISCELLANEOUS ------------------------------------------*/

	/**
	 * Read the config.
	 * @param m_config The config to read.
	 */
	 void readConfig(TDEConfig *m_config);

	/**
	 * Returns the default DTD of the current Document.
	 */
	const DTDStruct* defaultDTD();

	/**
	 * @return Returns the current KafkaWidget.
	 */
	KafkaWidget *getKafkaWidget() {return m_kafkaPart;}

	/**
	 * @return Returns the current Document.
	 */
	Document *getCurrentDoc() {return m_currentDoc;}

	/**
	 * Prints in stdout the current Node tree + Node->DOM::Node->Node relationship.
	 * @node The startNode
	 * @indent The number of little dots per parent relationship.
	 */
	void coutLinkTree(Node *node, int indent);

	/**
	 * In order to have tdehtml works whatever DTD is loaded, they must always exists
	 * and be valid.
	 */
	DOM::Node html, body, head;

signals:
	/**
	 * Emitted when an error occurs when loading kafka. Can be called multiple times.
	 * @param node The node which caused this error.
	 */
	void loadingError(Node *node);

	/**
	 * Called whenever a DOM::Node get the focus
	 */
	void newCursorPosition(int col, int row);

	/**
	 * Called whenever a DOM::Node get the focus
	 */
	void nodeGetFocus(Node *_node);

	/**
	 * Called when the wKafkaPart is loaded.
	 */
	void loaded();

	/**
	 * Called when the wKafkaPart is unloaded.
	 */
	void unloaded();

public slots:
	/**
	 * Called whenever a DOM::Node is inserted in the Kafka tree.
	 * @param domNode is the Node inserted.
	 * @param insertChilds Specifies if the _domNode's child should be inserted
         * @param modifs The changes made are logged into modifs.
	 */
	void slotDomNodeInserted(DOM::Node domNode, bool insertChilds, NodeModifsSet *modifs);

	/**
	 * Called whenever DOM::Node's attributes are modified.
	 * @param domNode is the Node modified.
         * @param modifs The changes made are logged into modifs.
	 */
	void slotDomNodeModified(DOM::Node domNode, NodeModifsSet *modifs);

	/**
	 * Called whenever a DOM::Node is about to be removed from the Kafka tree.
	 * @param domNode is the Node to be deleted.
	 * @param deleteChilds Specifies if we should delete the child nodes of _node
         * @param modifs The changes made are logged into modifs.
	 */
	void slotDomNodeAboutToBeRemoved(DOM::Node domNode, bool deleteChilds, NodeModifsSet *modifs);

	/**
	 * Called whenever a DOM::Node is moved.
	 * @param domNode The DOM::Node to move.
	 * @param newParent The new parent DOM::Node of domNode.
	 * @param before domNode will be inserted before before.
         * @param modifs The changes made are logged into modifs.
	 */
	void slotDomNodeIsAboutToBeMoved(DOM::Node domNode, DOM::Node newParent, DOM::Node before, NodeModifsSet *modifs);

	/**
	 * Called whenever a DOM::Node get the focus
	 */
	void slotdomNodeNewCursorPos(DOM::Node _domNode, int offset);
    
    void slotCut();
    void slotCopy();
    void slotPaste();

    void slotCut(Node* startNode, int startOffset, Node* endNode, int endOffset, 
                 Node** cursorNode, long cursorOffset, TQString const& plainText);
    void slotCopy(Node* startNode, int startOffset, Node* endNode, int endOffset, TQString const& plainText);

public:
	//use a TQPtrList aferwards
	NodeEnhancer *mainEnhancer;
    
private:
	/**
	 * Create a KafkaWidget.
	 */
	KafkaDocument(TQWidget *parent, TQWidget *widgetParent, const char *name);

  TQMap<TQString, TQString> decodedChars;
	TQMap<TQString, TQString> encodedChars;
	TQPtrDict<kNodeAttrs> domNodeProps;
	TQGuardedPtr<KafkaWidget> m_kafkaPart;
	Document *m_currentDoc;
	bool _docLoaded;

};

#endif