selectable_table_view.cpp
3.85 KB
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
#include <escher/selectable_table_view.h>
#include <assert.h>
SelectableTableView::SelectableTableView(Responder * parentResponder, TableViewDataSource * dataSource, KDCoordinate horizontalCellOverlapping, KDCoordinate verticalCellOverlapping, KDCoordinate topMargin, KDCoordinate rightMargin, KDCoordinate bottomMargin, KDCoordinate leftMargin,
SelectableTableViewDataSource * selectionDataSource, SelectableTableViewDelegate * delegate, bool showIndicators, bool colorBackground, KDColor backgroundColor,
KDCoordinate indicatorThickness, KDColor indicatorColor, KDColor backgroundIndicatorColor, KDCoordinate indicatorMargin) :
TableView(dataSource, selectionDataSource, horizontalCellOverlapping, verticalCellOverlapping, topMargin, rightMargin, bottomMargin, leftMargin, showIndicators, colorBackground, backgroundColor,
indicatorThickness, indicatorColor, backgroundIndicatorColor, indicatorMargin),
Responder(parentResponder),
m_selectionDataSource(selectionDataSource),
m_delegate(delegate)
{
assert(m_selectionDataSource != nullptr);
}
int SelectableTableView::selectedRow() {
return m_selectionDataSource->selectedRow();
}
int SelectableTableView::selectedColumn() {
return m_selectionDataSource->selectedColumn();
}
void SelectableTableView::selectRow(int j) {
m_selectionDataSource->selectRow(j);
}
void SelectableTableView::selectColumn(int i) {
m_selectionDataSource->selectColumn(i);
}
void SelectableTableView::reloadData() {
int col = selectedColumn();
int row = selectedRow();
deselectTable();
TableView::reloadData();
selectCellAtLocation(col, row);
}
void SelectableTableView::didEnterResponderChain(Responder * previousFirstResponder) {
selectCellAtLocation(selectedColumn(), selectedRow());
if (m_delegate) {
m_delegate->tableViewDidChangeSelection(this, 0, -1);
}
}
void SelectableTableView::willExitResponderChain(Responder * nextFirstResponder) {
unhighlightSelectedCell();
}
void SelectableTableView::deselectTable() {
unhighlightSelectedCell();
int previousSelectedCellX = selectedColumn();
int previousSelectedCellY = selectedRow();
selectColumn(0);
selectRow(-1);
if (m_delegate) {
m_delegate->tableViewDidChangeSelection(this, previousSelectedCellX, previousSelectedCellY);
}
}
bool SelectableTableView::selectCellAtLocation(int i, int j) {
if (i < 0 || i >= dataSource()->numberOfColumns()) {
return false;
}
if (j < 0 || j >= dataSource()->numberOfRows()) {
return false;
}
unhighlightSelectedCell();
int previousX = selectedColumn();
int previousY = selectedRow();
selectColumn(i);
selectRow(j);
if (selectedRow() >= 0) {
scrollToCell(i, j);
HighlightCell * cell = cellAtLocation(i, j);
cell->setHighlighted(true);
}
if (m_delegate) {
m_delegate->tableViewDidChangeSelection(this, previousX, previousY);
}
return true;
}
HighlightCell * SelectableTableView::selectedCell() {
if (selectedColumn() < 0 || selectedRow() < 0) {
return nullptr;
}
return cellAtLocation(selectedColumn(), selectedRow());
}
bool SelectableTableView::handleEvent(Ion::Events::Event event) {
if (event == Ion::Events::Down) {
return selectCellAtLocation(selectedColumn(), selectedRow()+1);
}
if (event == Ion::Events::Up) {
return selectCellAtLocation(selectedColumn(), selectedRow()-1);
}
if (event == Ion::Events::Left) {
return selectCellAtLocation(selectedColumn()-1, selectedRow());
}
if (event == Ion::Events::Right) {
return selectCellAtLocation(selectedColumn()+1, selectedRow());
}
return false;
}
void SelectableTableView::unhighlightSelectedCell() {
if (selectedColumn() >= 0 && selectedColumn() < dataSource()->numberOfColumns() &&
selectedRow() >= 0 && selectedRow() < dataSource()->numberOfRows()) {
HighlightCell * previousCell = cellAtLocation(selectedColumn(), selectedRow());
previousCell->setHighlighted(false);
}
}