LeechCraft  0.6.70-10870-g558588d6ec
Modular cross-platform feature rich live environment.
modeliterator.cpp
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29 
30 #include "modeliterator.h"
31 #include <QAbstractItemModel>
32 #include <QtDebug>
33 
34 namespace LeechCraft
35 {
36 namespace Util
37 {
38  ModelIterator::ModelIterator (QAbstractItemModel *model,
39  int row, int col, ModelIterator::Direction dir, const QModelIndex& parent)
40  : Model_ (model)
41  , Parent_ (parent)
42  , Row_ (row)
43  , Col_ (col)
44  , Dir_ (dir)
45  {
46  }
47 
49  {
50  ++GetIncrementable ();
51  return *this;
52  }
53 
55  {
56  ModelIterator oldThis (*this);
57  ++GetIncrementable ();
58  return oldThis;
59  }
60 
62  {
63  --GetIncrementable ();
64  return *this;
65  }
66 
68  {
69  ModelIterator oldThis (*this);
70  --GetIncrementable ();
71  return oldThis;
72  }
73 
75  {
76  GetIncrementable () += diff;
77  return *this;
78  }
79 
81  {
82  GetIncrementable () -= diff;
83  return *this;
84  }
85 
86  int ModelIterator::operator- (const ModelIterator& other) const
87  {
88  return GetIncrementable () - other.GetIncrementable ();
89  }
90 
91  bool operator== (const ModelIterator& left, const ModelIterator& right)
92  {
93  return left.Row_ == right.Row_ &&
94  left.Col_ == right.Col_ &&
95  left.Model_ == right.Model_ &&
96  left.Parent_ == right.Parent_;
97  }
98 
99  bool operator!= (const ModelIterator& left, const ModelIterator& right)
100  {
101  return !(left == right);
102  }
103 
104  QModelIndex ModelIterator::operator*() const
105  {
106  return Model_->index (Row_, Col_, Parent_);
107  }
108 
110  {
111  return Row_;
112  }
113 
115  {
116  return Col_;
117  }
118 
119  int& ModelIterator::GetIncrementable ()
120  {
121  switch (Dir_)
122  {
123  case Direction::Rows:
124  return Row_;
125  case Direction::Cols:
126  return Col_;
127  }
128 
129  qWarning () << Q_FUNC_INFO
130  << "unknown direction";
131  return Row_;
132  }
133 
134  int ModelIterator::GetIncrementable () const
135  {
136  switch (Dir_)
137  {
138  case Direction::Rows:
139  return Row_;
140  case Direction::Cols:
141  return Col_;
142  }
143 
144  qWarning () << Q_FUNC_INFO
145  << "unknown direction";
146  return Row_;
147  }
148 }
149 }
bool operator!=(const ModelIterator &left, const ModelIterator &right)
The model should be traversed by rows.
ModelIterator & operator++()
Increments the traversable index and returns the modified iterator.
ModelIterator & operator+=(int count)
Adds the given count to the traversable index.
ModelIterator(QAbstractItemModel *model, int row, int col=0, Direction dir=Direction::Rows, const QModelIndex &parent={})
Constructs an iterator.
The model should be traversed by columns.
ModelIterator & operator--()
Decrements the traversable index and returns the modified iterator.
bool operator==(const ModelIterator &left, const ModelIterator &right)
int operator-(const ModelIterator &other) const
Computes the distance between this and another iterator.
int GetRow() const
Returns the current row.
Direction
The direction of traversal.
Definition: modeliterator.h:63
Provides an iterator-based API to a Qt model.
Definition: modeliterator.h:53
ModelIterator & operator-=(int count)
Subtracts the given count to the traversable index.
QModelIndex operator*() const
Returns the index currently pointed by the iterator.
int GetCol() const
Returns the current column.