math_toolbox.h
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#ifndef APPS_MATH_TOOLBOX_H
#define APPS_MATH_TOOLBOX_H
#define MATRICES_ARE_DEFINED 1
#include <escher.h>
#include "toolbox_node.h"
/* m_nodeModel points at the node of the tree (describing the whole model)
* where we are located. It enables to know which rows are leaves and which are
* subtrees. */
class MathToolbox : public Toolbox, public ListViewDataSource, public SelectableTableViewDataSource {
public:
MathToolbox();
void didBecomeFirstResponder() override;
bool handleEvent(Ion::Events::Event event) override;
int numberOfRows() override;
HighlightCell * reusableCell(int index, int type) override;
int reusableCellCount(int type) override;
void willDisplayCellForIndex(HighlightCell * cell, int index) override;
KDCoordinate rowHeight(int j) override;
KDCoordinate cumulatedHeightFromIndex(int j) override;
int indexFromCumulatedHeight(KDCoordinate offsetY) override;
int typeAtLocation(int i, int j) override;
void viewWillAppear() override;
void viewDidDisappear() override;
protected:
int stackDepth();
TextField * sender() override;
bool handleEventForRow(Ion::Events::Event event, int selectedRow);
SelectableTableView m_selectableTableView;
constexpr static int k_maxNumberOfDisplayedRows = 6; //240/40
private:
class Stack {
public:
class State {
public:
State(int selectedRow = -1, KDCoordinate verticalScroll = 0);
bool isNull();
int selectedRow();
KDCoordinate verticalScroll();
private:
int m_selectedRow;
KDCoordinate m_verticalScroll;
};
void push(int selectedRow, KDCoordinate verticalScroll);
void pop();
State * stateAtIndex(int index);
int depth();
void resetStack();
private:
constexpr static int k_maxModelTreeDepth = 2;
State m_statesStack[k_maxModelTreeDepth];
};
class ListController : public ViewController {
public:
ListController(Responder * parentResponder, SelectableTableView * tableView);
const char * title() override;
View * view() override;
void didBecomeFirstResponder() override;
void setFirstSelectedRow(int firstSelectedRow);
private:
SelectableTableView * m_selectableTableView;
int m_firstSelectedRow;
};
constexpr static KDCoordinate k_nodeRowHeight = 40;
constexpr static KDCoordinate k_leafRowHeight = 40;
const ToolboxNode * rootModel();
bool selectLeaf(ToolboxNode * selectedNode);
bool selectSubMenu(ToolboxNode * selectedNode);
bool returnToPreviousMenu();
Stack m_stack;
MessageTableCellWithMessage m_leafCells[k_maxNumberOfDisplayedRows];
MessageTableCellWithChevron m_nodeCells[k_maxNumberOfDisplayedRows];
ListController m_listController;
ToolboxNode * m_nodeModel;
};
#endif