Line data Source code
1 : /// Including Qt
2 : #include <QVBoxLayout>
3 : #include <QHeaderView>
4 : #include <QMimeData>
5 : #include <qevent.h>
6 :
7 : /// Including dbe
8 : #include "dbe/TableTab.hpp"
9 : #include "dbe/MainWindow.hpp"
10 :
11 : //------------------------------------------------------------------------------------------------------
12 : /**
13 : * Construct a Tabletab and let everything unitialized until first use
14 : *
15 : * Set the geometry and operational properties of the object
16 : *
17 : * @param parent a pointer to the parent widget
18 : */
19 0 : dbe::TableTab::TableTab ( QWidget * parent )
20 : : QWidget ( parent ),
21 0 : this_model ( nullptr ),
22 0 : this_filter ( nullptr ),
23 0 : this_delegate ( nullptr ),
24 0 : this_view ( nullptr )
25 : {
26 0 : this_view = new CustomTableView();
27 : /// Adjusting layout
28 0 : QVBoxLayout * TabLayout = new QVBoxLayout ( this );
29 0 : TabLayout->addWidget ( this_view );
30 0 : this_view->hide();
31 0 : setAcceptDrops ( true );
32 0 : this_holder = dynamic_cast<QTabWidget *> ( parent );
33 0 : }
34 :
35 0 : dbe::TableTab::~TableTab()
36 : {
37 0 : delete this_model;
38 0 : delete this_filter;
39 0 : delete this_delegate;
40 0 : delete this_view;
41 0 : }
42 : //------------------------------------------------------------------------------------------------------
43 :
44 : //------------------------------------------------------------------------------------------------------
45 0 : void dbe::TableTab::create_models()
46 : {
47 :
48 0 : if ( this_model == nullptr )
49 : {
50 0 : this_model = new dbe::models::table();
51 0 : connect ( this, SIGNAL ( sig_data_dropped ( QMimeData const &, Qt::DropAction ) ),
52 : this_model,
53 : SLOT ( slot_data_dropped ( QMimeData const &, Qt::DropAction ) ) );
54 : }
55 :
56 0 : this_delegate = this_delegate == nullptr ? new CustomDelegate() : this_delegate;
57 0 : this_filter = this_filter == nullptr ? new dbe::models::tableselection() : this_filter;
58 0 : }
59 :
60 0 : void dbe::TableTab::reset_models()
61 : {
62 0 : this_model->ResetModel();
63 0 : this_filter->ResetModel();
64 0 : }
65 :
66 0 : void dbe::TableTab::CreateModels()
67 : {
68 0 : if ( this_model == nullptr )
69 : {
70 0 : create_models();
71 : }
72 : else
73 : {
74 0 : reset_models();
75 : }
76 :
77 0 : connect ( this_model, SIGNAL ( ResetTab() ), this, SLOT ( ResetTabView() ) );
78 0 : }
79 : //------------------------------------------------------------------------------------------------------
80 :
81 : //------------------------------------------------------------------------------------------------------
82 0 : void dbe::TableTab::DisconnectView()
83 : {
84 0 : this_view->setModel ( NULL );
85 0 : }
86 :
87 0 : void dbe::TableTab::ResetTableView()
88 : {
89 0 : this_filter->setSourceModel ( this_model );
90 :
91 0 : this_view->setItemDelegate ( this_delegate );
92 0 : this_view->setModel ( this_filter );
93 0 : this_view->show();
94 :
95 0 : ResizeHeaders();
96 0 : }
97 :
98 0 : void dbe::TableTab::ResizeHeaders()
99 : {
100 : // TODO: at the moment the resize of columns creates too large columns when several data are in a cell
101 : // the resize of rows is a little bit expensive with large tables
102 : // to be re-evaluated
103 : //
104 : // if ( this_view->model() != nullptr )
105 : // {
106 : // this_view->resizeRowsToContents();
107 : // this_view->resizeColumnsToContents();
108 : // }
109 0 : }
110 :
111 0 : void dbe::TableTab::ResetTabView()
112 : {
113 0 : reset_models();
114 0 : ResetTableView();
115 0 : this_holder->setTabText ( this_holder->indexOf ( this ), this_model->get_class_name() );
116 0 : }
117 : //------------------------------------------------------------------------------------------------------
118 :
119 : //------------------------------------------------------------------------------------------------------
120 : /**
121 : * Capture event of the pointer entering the tabletab while dragging something
122 : *
123 : * @param event is a pointer to the associated qt event object
124 : */
125 0 : void dbe::TableTab::dragEnterEvent ( QDragEnterEvent * event )
126 : {
127 :
128 : // If there is nothing created then create as needed
129 0 : CreateModels();
130 :
131 : // Check that all mimetypes are supported
132 0 : for ( auto const & mimetype : this_model->mimeTypes() )
133 : {
134 0 : if ( not event->mimeData()->hasFormat( mimetype.toStdString().c_str() ) )
135 : {
136 0 : event->ignore();
137 0 : return;
138 : }
139 0 : }
140 :
141 : // Support only copy actions
142 0 : if ( event->proposedAction() != Qt::DropAction::CopyAction )
143 : {
144 : return;
145 : }
146 :
147 0 : event->acceptProposedAction();
148 :
149 : // connect signals
150 0 : MainWindow * mainwin = MainWindow::findthis();
151 0 : connect ( GetTableView(), SIGNAL ( OpenEditor ( tref ) ), mainwin,
152 : SLOT ( slot_launch_object_editor ( tref ) ), Qt::UniqueConnection );
153 0 : connect ( GetTableDelegate(), SIGNAL ( CreateObjectEditorSignal ( tref ) ), mainwin,
154 : SLOT ( slot_launch_object_editor ( tref ) ), Qt::UniqueConnection );
155 : }
156 : //------------------------------------------------------------------------------------------------------
157 :
158 : //------------------------------------------------------------------------------------------------------
159 : /**
160 : * Capture a mouse release event of a dragged object
161 : *
162 : * Properly emits a signal to the associated tablemodel, i.e. this is a thread safe operation
163 : *
164 : * @param event is a pointer to the associated qt event object
165 : */
166 0 : void dbe::TableTab::dropEvent ( QDropEvent * event )
167 : {
168 0 : emit sig_data_dropped ( *event->mimeData(), event->proposedAction() );
169 0 : }
170 : //------------------------------------------------------------------------------------------------------
171 :
172 : //------------------------------------------------------------------------------------------------------
173 0 : dbe::models::table * dbe::TableTab::GetTableModel() const
174 : {
175 0 : return this_model;
176 : }
177 :
178 0 : dbe::models::tableselection * dbe::TableTab::GetTableFilter() const
179 : {
180 0 : return this_filter;
181 : }
182 :
183 0 : dbe::CustomDelegate * dbe::TableTab::GetTableDelegate() const
184 : {
185 0 : return this_delegate;
186 : }
187 :
188 0 : dbe::CustomTableView * dbe::TableTab::GetTableView() const
189 : {
190 0 : return this_view;
191 : }
192 : //------------------------------------------------------------------------------------------------------
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