LeechCraft  0.6.70-10870-g558588d6ec
Modular cross-platform feature rich live environment.
modelitem.cpp
Go to the documentation of this file.
1 /**********************************************************************
2  * LeechCraft - modular cross-platform feature rich internet client.
3  * Copyright (C) 2006-2014 Georg Rudoy
4  *
5  * Boost Software License - Version 1.0 - August 17th, 2003
6  *
7  * Permission is hereby granted, free of charge, to any person or organization
8  * obtaining a copy of the software and accompanying documentation covered by
9  * this license (the "Software") to use, reproduce, display, distribute,
10  * execute, and transmit the Software, and to prepare derivative works of the
11  * Software, and to permit third-parties to whom the Software is furnished to
12  * do so, all subject to the following:
13  *
14  * The copyright notices in the Software and this entire statement, including
15  * the above license grant, this restriction and the following disclaimer,
16  * must be included in all copies of the Software, in whole or in part, and
17  * all derivative works of the Software, unless such copies or derivative
18  * works are solely in the form of machine-executable object code generated by
19  * a source language processor.
20  *
21  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23  * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
24  * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
25  * FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
26  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
27  * DEALINGS IN THE SOFTWARE.
28  **********************************************************************/
29 
30 #include "modelitem.h"
31 #include <algorithm>
32 
33 namespace LeechCraft
34 {
35 namespace Util
36 {
38  : Model_ { nullptr }
39  {
40  }
41 
42  ModelItem::ModelItem (QAbstractItemModel *model, const QModelIndex& idx, const ModelItem_wtr& parent)
43  : ModelItemBase { parent }
44  , Model_ { model }
45  , SrcIdx_ { idx }
46  {
47  }
48 
50  {
51  if (Children_.value (row))
52  return Children_.at (row).get ();
53 
54  if (Children_.size () <= row)
55  Children_.resize (row + 1);
56 
57  const auto& childIdx = Model_->index (row, 0, SrcIdx_);
58  Children_ [row] = std::make_shared<ModelItem> (Model_, childIdx, shared_from_this ());
59  return Children_.at (row).get ();
60  }
61 
62  const QModelIndex& ModelItem::GetIndex () const
63  {
64  return SrcIdx_;
65  }
66 
67  void ModelItem::RefreshIndex (int modelStartingRow)
68  {
69  if (SrcIdx_.isValid ())
70  SrcIdx_ = Model_->index (GetRow () - modelStartingRow, 0, Parent_.lock ()->GetIndex ());
71  }
72 
73  QAbstractItemModel* ModelItem::GetModel () const
74  {
75  return Model_;
76  }
77 
78  ModelItem_ptr ModelItem::FindChild (QModelIndex index) const
79  {
80  index = index.sibling (index.row (), 0);
81 
82  const auto pos = std::find_if (Children_.begin (), Children_.end (),
83  [&index] (const ModelItem_ptr& item) { return item->GetIndex () == index; });
84  return pos == Children_.end () ? ModelItem_ptr {} : *pos;
85  }
86 }
87 }
std::shared_ptr< ModelItem > ModelItem_ptr
Definition: modelitem.h:40
detail::ExprTree< detail::ExprType::LeafStaticPlaceholder, boost::mpl::int_< Idx > > pos
Definition: oral.h:922
const QModelIndex & GetIndex() const
Returns the index this ModelItem instance wraps.
Definition: modelitem.cpp:62
int GetRow() const
Returns the index of this item in the parent&#39;s children list.
QAbstractItemModel * GetModel() const
Returns the wrapped model.
Definition: modelitem.cpp:73
std::weak_ptr< ModelItem > ModelItem_wtr
Definition: modelitem.h:43
ModelItem_ptr FindChild(QModelIndex index) const
Finds a child item for the given index.
Definition: modelitem.cpp:78
Base class for model items for tree-like models.
Definition: modelitembase.h:69
void RefreshIndex(int modelStartingRow)
Updates the wrapped index so that it points at the given row.
Definition: modelitem.cpp:67
ModelItem * EnsureChild(int row)
Ensures there is a child item at the given row.
Definition: modelitem.cpp:49
Provides a proxying API on top of an QAbstractItemModel.
Definition: modelitem.h:54
ModelItem()
Constructs a default (invalid) ModelItem having no model set.
Definition: modelitem.cpp:37