summaryrefslogtreecommitdiff
path: root/sw/inc/SwNumberTree.hxx
blob: 4b9bdae378f421a8d3734ec758f5483f758c72de (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
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#ifndef INCLUDED_SW_INC_SWNUMBERTREE_HXX
#define INCLUDED_SW_INC_SWNUMBERTREE_HXX

#include <set>
#include <vector>
#include <swdllapi.h>
#include <SwNumberTreeTypes.hxx>

class SwNumberTreeNode;

bool SwNumberTreeNodeLessThan (const SwNumberTreeNode * pA,
                               const SwNumberTreeNode * pB);

struct compSwNumberTreeNodeLessThan
{
    bool operator()(const SwNumberTreeNode * pA,
                    const SwNumberTreeNode * pB) const
    { return SwNumberTreeNodeLessThan(pA, pB); }
};

/**
   A tree of numbered nodes.

   Simple example:

   <pre>
   1. kshdkjfs
     1.1. lskjf
   2. sdfjlksaf
   3. fkaoslk
     3.1. lfjlaskf
     3.2. jaslkjflsf
       3.2.1. hkljhkjhk

   + R
     + 1 kshdkjfs
     | + 1 lskjf
     + 2 sdfjlksaf
     + 3 fkaoslk
       + 1 lfjlaskf
       + 2 jaslkjflsf
         + 1 hkljhkjhk
   </pre>

   The root contains the nodes of the first level. Each node A of the
   first level contains those nodes of the second level that have the
   same first level number as A and so on for the subsidiary levels.

   The numbering label of a node A is resolved by concatenating the
   numbers of the nodes on the path from the root to A.

    ------------------------------------------

    Phantoms

    A phantom is an auxiliary node that is used to emulate numberings
    starting with nodes not at top level. The phantom contains the
    number for the level but is not considered part of the numbering.

     Constraint 1: A phantom is always the first child node.
     Constraint 2: At each node there is at most one child that is a phantom.
     Constraint 3: A phantom is the smallest of all numbering nodes.

    Uncounted Phantoms

      0.1. dljflskjlasf
    5. abcdagaha
      5.1.

    + R (nStart = 5)
      + 0 (phantom, not counted)
      | + 1 dljflskjlasf
      + 5 abcdagaha
        + 1

     The phantom gets numbered with 0. The first non-phantom node gets
     numbered with the start value.

     -----------------------------------------

     Counted Phantoms

       5.1. lgkjjgklg
     6. lkjfalskjflsaf
       6.1. ljdflaksjflkjasflkjsf

     + R (nStart = 5)
       + 5 (phantom, counted)
       | + 1 lgkjjgklg
       + 6 lkjfalskjflsaf
         + 1 ljdflaksjflkjasflkjsf

     The phantom gets numbered with the start value.
*/
class SW_DLLPUBLIC SwNumberTreeNode
{
protected:
    typedef std::set<SwNumberTreeNode *, compSwNumberTreeNodeLessThan>
    tSwNumberTreeChildren;

public:
    SwNumberTreeNode();

    virtual ~SwNumberTreeNode();

    /**
       Add a child.

       @param pChild   child to add
       @param nDepth   depth in which to add the child
     */
    void AddChild( SwNumberTreeNode* pChild,
                   const int nDepth = 0 );

    /**
       Remove a child.

       @param pChild     child to be removed
     */
    void RemoveChild( SwNumberTreeNode* pChild );

    /**
       Remove this child from the tree.
     */
    void RemoveMe();

    /**
       Returns the parent of this node.

       @return the parent
    */
    inline SwNumberTreeNode* GetParent() const
    {
        return mpParent;
    }

    /**
       Returns number of this node.

       @param bValidate     validate the number?

       @return number of this node
     */
    SwNumberTree::tSwNumTreeNumber GetNumber( bool bValidate = true ) const;

    bool IsContinueingPreviousSubTree() const { return mbContinueingPreviousSubTree;}

    /**
       Returns level numbers of this node.

       @return level numbers of this node
     */
    SwNumberTree::tNumberVector GetNumberVector() const;

    /**
       Return if numbering is restartet at this node.
     */
    virtual bool IsRestart() const = 0;

    /**
       Return start value.

       @return start value
     */
    virtual SwNumberTree::tSwNumTreeNumber GetStartValue() const = 0;

    /**
       Return if this node is counted.

       @retval true this node is counted
       @retval false this node is NOT counted
     */
    virtual bool IsCounted() const;

    /**
       Return if this node is counted continuous.

       @retval true    This node is counted continuous.
       @retval false   else
     */
    virtual bool IsContinuous() const = 0;

    /**
       Return if a node is first non-phantom child of this node.

       @param pNode     the node to check

       @retval true     pNode is first child of this node
       @retval false    else
     */
    bool IsFirst(const SwNumberTreeNode * pNode) const;

    /**
       Return if this node if the first non-phantom node in the tree.

       @retval true     this node is the first non-phantom node in the tree
       @retval false    else
     */
    bool IsFirst() const;

    /**
       Return if this node is a phantom.

       @retval true this node is a phantom
       @retval false this node is NOT a phantom
     */
    bool IsPhantom() const { return mbPhantom;}

    /** set level of this node

        precondition: node is already member of a list tree

        @author OD
    */
    void SetLevelInListTree( const int nLevel );

    /**
       Return level of this node.

       The level of this node is the length of the path from the root
       to this node.

       @return the level of this node
     */
    int GetLevelInListTree() const;

    /**
       Returns if this node is less than another node.

       @param rTreeNode   node to compare with

       @attention A phantom node is considered the least element with
       respect to lessThan.

       @retval true this node is less than rTreeNode
       @retval false else
    */
    virtual bool LessThan(const SwNumberTreeNode & rTreeNode) const;

    /**
       Invalidate this node and all its descendants.

       All iterators holding the last valid node in the according list
       of children are set to the end of this list, thereby stating all
       children in the list are invalid.
       #i83479# - made public
     */
    void InvalidateTree() const;

    /**
       Notifies all invalid children of this node.
       #i83479# - made public
     */
    void NotifyInvalidChildren();

    /**
       Notifies the node.

       Calls Invalidate(this) on parent.
     */
    void InvalidateMe();

    /**
       Validate the tree.

       Validates all nodes in this subtree.
    */
    void ValidateTree();

    /**
       Validates this node.

       Calls Validate(this) on parent.
    */
    void ValidateMe();

    /**
       Notifies all invalid siblings of this node.
    */
    void NotifyInvalidSiblings();

    /**
       notification of all nodes in the list tree on certain list level
    */
    void NotifyNodesOnListLevel( const int nListLevel );

    /** Invalidation and notification of complete numbering tree

        #i64010#
        Usage: on <IsCounted()> state change its needed to invalidate the
               complete numbering tree due to wide influence of this change.
    */
    inline void InvalidateAndNotifyTree()
    {
        if ( GetRoot() )
        {
            GetRoot()->InvalidateTree();
            GetRoot()->Notify();
        }
    }

    /**
       Returns the greatest descendant of the root that is smaller than
       this node, aka the predecessor of this node.

       @return the predecessor
     */
    SwNumberTreeNode* GetPred( bool bSibling = false ) const;

    /** determines the node, which is preceding the node

        #i81002#
        The search for the preceding node is performed for the tree below the
        <this> node. To search the complete tree, the method has been called for
        the root of the tree.

        @author OD
    */
    const SwNumberTreeNode* GetPrecedingNodeOf( const SwNumberTreeNode& rNode ) const;

#ifdef __SW_NUMBER_TREE_SANITY_CHECK
    /**
       Sanity check.

       @param bRecursive    descend to children

       @retval true   the structure of this node is sane
       @retval false  else
     */
    bool IsSane(bool bRecursive) const;
#endif // __SW_NUMBER_TREE_SANITY_CHECK

protected:
    /**
       the children
    */
    tSwNumberTreeChildren mChildren;

    /**
       Returns the root node of the tree this node is part of.

       Important note: method call <GetRoot()->GetRoot()> returns NULL.

       @return the root
     */
    SwNumberTreeNode* GetRoot() const;

     /**
       Return if the notification is not disabled on global conditions

       @retval true   Notification enabled in general.
       @retval false  else
     */
    virtual bool IsNotificationEnabled() const = 0;

    /**
       Returns how many children this node has got.

       @return number of children
     */
    tSwNumberTreeChildren::size_type GetChildCount() const;

    // #i64010# - made pure virtual
    virtual bool HasCountedChildren() const = 0;

    // #i64010#
    virtual bool IsCountedForNumbering() const = 0;

    // method called before this tree node has been added to the list tree
    virtual void PreAdd() = 0;
    // method called after this tree node has been removed from the list tree
    virtual void PostRemove() = 0;

#ifdef __SW_NUMBER_TREE_SANITY_CHECK
    /**
       Sanity check with loop detection.

       @param bRecursive   descend to children
       @param rParents     vector for recording path

       @retval true     this node is sane
       @retval false    else     */
    virtual bool IsSane
    (bool bRecursive, std::vector<const SwNumberTreeNode *> rParents) const;
#endif // __SW_NUMBER_TREE_SANITY_CHECK

    /**
       the parent node
    */
    SwNumberTreeNode * mpParent;

    /**
       the number of the node
    */
    mutable SwNumberTree::tSwNumTreeNumber mnNumber;

    // boolean indicating, that a node of a not counted parent node is continuing
    // the numbering of parent's previous node sub tree.
    // Example:
    //   1. kshdkjfs
    //     1.1. lskjf
    //      sdfjlksaf <-- not counted parent node
    //     1.2. lfjlaskf <-- <mbContinueingPreviousSubTree = true>
    mutable bool mbContinueingPreviousSubTree;

    /**
       true     this node is a phantom
       false    this node is NOT a phantom
     */
    bool mbPhantom;

    /**
       Iterator to the last valid element. All children that are less
       than or equal to the referenced child are valid. All children
       greater than the referenced child are invalid.
     */
    mutable tSwNumberTreeChildren::const_iterator mItLastValid;

    SwNumberTreeNode(const SwNumberTreeNode& );
    SwNumberTreeNode& operator=( const SwNumberTreeNode& );

    /**
       Calls _GetNumberVector on parent and adds number of this node
       at the end.

       @param rVector     return value
       @param bValidate   validate the number?
     */
    void _GetNumberVector( SwNumberTree::tNumberVector& rVector,
                           bool bValidate = true ) const;

    /**
       Invalidates a child.

       Calls SetLastValid for the preceding sibling of the child and
       notifies all invalid children.

       @param pChild      the child to invalidate
     */
    void Invalidate( SwNumberTreeNode * pChild );

    /** Invalidation of all children

        Usage: on <IsCounted()> state change the children have to be invalidated
    */
    inline void InvalidateChildren()
    {
        SetLastValid( mChildren.end() );
    }

    /**
       Set the last valid child of this node.

       @param aItLastValid    iterator pointing to the new last valid child
       @param bValidating     - true    always set the last valid node to
                                        aItLastValid
                              - false   only set if aItLastValid is preceding
                                        the current last valid node
     */
    void SetLastValid(const tSwNumberTreeChildren::const_iterator& aItLastValid,
                      bool bValidating = false) const;

    /**
       Set this node as last valid child of its parent.

       @param bValidation    see above
     */
    void SetLastValid(bool bValidating) const;

    /**
       Return if this node is notifiable.

       @attention If a not is not notifiable a notify request is *not*
       forwarded to its descendants.

       @retval true   This node is notifiable.
       @retval false  else
     */
    virtual bool IsNotifiable() const = 0;

    /**
       Notifies the node.

       Called when the number of the node got invalid.
     */
    virtual void NotifyNode() = 0;

    /**
       Notifies this node (NotifyNode) and all descendants.
     */
    void Notify();

    /** notification of children nodes on certain depth

        @author OD
    */
    void NotifyChildrenOnDepth( const int nDepth );

    /**
       Returns if a child A this node is valid.

       A is valid if aItLastValid in parent refers to a node
       greater than of equal to A.

       @param pChild    child to be tested

       @retval true this node is valid
       @retval false this node is NOT valid
     */
    bool IsValid(const SwNumberTreeNode * pChild) const;

    /**
       Returns if this node is valid.

       @retval true    this node is valid
       @retval false   else
     */
    bool IsValid() const;

    /**
       Validates a child.

       @param pNode     child to be validated

       @attention All invalid children preceding pNode are validated, too.
     */
    void Validate(const SwNumberTreeNode * pNode) const;

    /**
       Validates a child using hierarchical numbering.

       @param pNode      child to be validated

       @attention All invalid children preceding pNode are validated, too.
     */
    void ValidateHierarchical(const SwNumberTreeNode * pNode) const;

    /**
       Validates a child using continuous numbering.

       @param pNode      child to be validated

       @attention All invalid children preceding pNode are validated, too.
     */
    void ValidateContinuous(const SwNumberTreeNode * pNode) const;

    /**
       Creates a new node of the same class.

       @return the new node
    */
    virtual SwNumberTreeNode * Create() const = 0;

    /**
       Creates a phantom.

       @return the created phantom
     */
    SwNumberTreeNode * CreatePhantom();

    /**
       Set if this node is a phantom.
     */
    void SetPhantom();

    /**
       Return if phantoms are counted.
     */
    virtual bool IsCountPhantoms() const = 0;

    /**
       Return if all descendants of this node are phantoms.
     */
    bool HasOnlyPhantoms() const;

    bool HasPhantomCountedParent() const;

    /**
        HB, OD : return node, if it isn't a phantom, otherwise return first
                 non-phantom descendant.
        Returns the first child of this node that is NOT a phantom.

        @return  the first non phantom child
    */
    SwNumberTreeNode* GetFirstNonPhantomChild();

    /**
       Removes recursively phantoms that have no children.

       The resulting tree has no phantoms that either have no children or
       whose descendancy consist entirely of phantoms.
     */
    void ClearObsoletePhantoms();

    tSwNumberTreeChildren::const_iterator GetIterator(const SwNumberTreeNode * pChild) const;

    /**
       Moves all children to a given destination node.

       @param pDest    the destination node
     */
    void MoveChildren(SwNumberTreeNode * pDest);

    /** Moves all children of this node that are greater than a given node
        to the destination node.

        distinguish between node for comparing, whose children are greater,
        and the destination node.

        @param _rCompareNode
        input parameter - reference to the node, which is used to determine
        the greater children

        @param _rDestNode
        input parameter - reference to the node, which is the destination for
        the greater children
    */
    void MoveGreaterChildren( SwNumberTreeNode& _rCompareNode,
                              SwNumberTreeNode& _rDestNode );

    /**
       Returns the last descendant of a node, if it has children.

       @return last descendant of the node
    */
    SwNumberTreeNode* GetLastDescendant() const;

};

#endif // INCLUDED_SW_INC_SWNUMBERTREE_HXX

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */