LeechCraft  0.6.70-13729-g7046a9d2a7
Modular cross-platform feature rich live environment.
modelitem.cpp
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29 
30 #include "modelitem.h"
31 #include <algorithm>
32 
33 namespace LC
34 {
35 namespace Util
36 {
37  ModelItem::ModelItem (QAbstractItemModel *model, const QModelIndex& idx, const ModelItem_wtr& parent)
38  : ModelItemBase { parent }
39  , Model_ { model }
40  , SrcIdx_ { idx }
41  {
42  }
43 
45  {
46  if (Children_.value (row))
47  return Children_.at (row).get ();
48 
49  if (Children_.size () <= row)
50  Children_.resize (row + 1);
51 
52  const auto& childIdx = Model_->index (row, 0, SrcIdx_);
53  Children_ [row] = std::make_shared<ModelItem> (Model_, childIdx, shared_from_this ());
54  return Children_.at (row).get ();
55  }
56 
57  const QModelIndex& ModelItem::GetIndex () const
58  {
59  return SrcIdx_;
60  }
61 
62  void ModelItem::RefreshIndex (int modelStartingRow)
63  {
64  if (SrcIdx_.isValid ())
65  SrcIdx_ = Model_->index (GetRow () - modelStartingRow, 0, Parent_.lock ()->GetIndex ());
66  }
67 
68  QAbstractItemModel* ModelItem::GetModel () const
69  {
70  return Model_;
71  }
72 
73  ModelItem_ptr ModelItem::FindChild (QModelIndex index) const
74  {
75  index = index.sibling (index.row (), 0);
76 
77  const auto pos = std::find_if (Children_.begin (), Children_.end (),
78  [&index] (const ModelItem_ptr& item) { return item->GetIndex () == index; });
79  return pos == Children_.end () ? ModelItem_ptr {} : *pos;
80  }
81 }
82 }
Base class for model items for tree-like models.
Definition: modelitembase.h:69
const QModelIndex & GetIndex() const
Returns the index this ModelItem instance wraps.
Definition: modelitem.cpp:57
ModelItem * EnsureChild(int row)
Ensures there is a child item at the given row.
Definition: modelitem.cpp:44
void RefreshIndex(int modelStartingRow)
Updates the wrapped index so that it points at the given row.
Definition: modelitem.cpp:62
std::weak_ptr< ModelItem > ModelItem_wtr
Definition: modelitem.h:43
std::shared_ptr< ModelItem > ModelItem_ptr
Definition: modelitem.h:40
int GetRow() const
Returns the index of this item in the parent&#39;s children list.
ModelItem()=default
Constructs a default (invalid) ModelItem having no model set.
Provides a proxying API on top of an QAbstractItemModel.
Definition: modelitem.h:54
QAbstractItemModel * GetModel() const
Returns the wrapped model.
Definition: modelitem.cpp:68
Definition: constants.h:35
ModelItem_ptr FindChild(QModelIndex index) const
Finds a child item for the given index.
Definition: modelitem.cpp:73