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9e3470436a
Calculation's input is now only saved and restored when the app truly closes or opens, instead of whenever the EditExpressionController enters or leaves the responder chain (which also happens when the user switches to the history or the toolbox, or triggers a syntax error). Change-Id: I8404f1bc5619bcbc03272b406962d284fe25f7e2
75 lines
3.4 KiB
C++
75 lines
3.4 KiB
C++
#ifndef CALCULATION_EDIT_EXPRESSION_CONTROLLER_H
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#define CALCULATION_EDIT_EXPRESSION_CONTROLLER_H
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#include <escher.h>
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#include <poincare/layout.h>
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#include "expression_field.h"
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#include "../shared/text_field_delegate.h"
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#include "../shared/layout_field_delegate.h"
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#include "history_controller.h"
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#include "selectable_table_view.h"
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namespace Calculation {
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/* TODO: implement a split view */
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class EditExpressionController : public ViewController, public Shared::TextFieldDelegate, public Shared::LayoutFieldDelegate {
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public:
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EditExpressionController(Responder * parentResponder, InputEventHandlerDelegate * inputEventHandlerDelegate, char * cacheBuffer, size_t * cacheBufferInformation, HistoryController * historyController, CalculationStore * calculationStore);
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/* k_layoutBufferMaxSize dictates the size under which the expression being
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* edited can be remembered when the user leaves Calculation. */
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static constexpr int k_layoutBufferMaxSize = 1024;
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/* k_cacheBufferSize is the size of the array to which m_cacheBuffer points.
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* It is used both as a way to buffer expression when pushing them the
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* CalculationStore, and as a storage for the current input when leaving the
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* application. */
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static constexpr int k_cacheBufferSize = (k_layoutBufferMaxSize < Constant::MaxSerializedExpressionSize) ? Constant::MaxSerializedExpressionSize : k_layoutBufferMaxSize;
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View * view() override { return &m_contentView; }
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void didBecomeFirstResponder() override;
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void viewWillAppear() override;
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void insertTextBody(const char * text);
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void restoreInput();
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void memoizeInput();
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/* TextFieldDelegate */
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bool textFieldDidReceiveEvent(::TextField * textField, Ion::Events::Event event) override;
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bool textFieldDidFinishEditing(::TextField * textField, const char * text, Ion::Events::Event event) override;
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bool textFieldDidAbortEditing(::TextField * textField) override;
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/* LayoutFieldDelegate */
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bool layoutFieldDidReceiveEvent(::LayoutField * layoutField, Ion::Events::Event event) override;
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bool layoutFieldDidFinishEditing(::LayoutField * layoutField, Poincare::Layout layoutR, Ion::Events::Event event) override;
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bool layoutFieldDidAbortEditing(::LayoutField * layoutField) override;
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void layoutFieldDidChangeSize(::LayoutField * layoutField) override;
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private:
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class ContentView : public View {
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public:
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ContentView(Responder * parentResponder, CalculationSelectableTableView * subview, InputEventHandlerDelegate * inputEventHandlerDelegate, TextFieldDelegate * textFieldDelegate, LayoutFieldDelegate * layoutFieldDelegate);
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void reload();
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CalculationSelectableTableView * mainView() { return m_mainView; }
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ExpressionField * expressionField() { return &m_expressionField; }
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private:
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int numberOfSubviews() const override { return 2; }
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View * subviewAtIndex(int index) override;
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void layoutSubviews(bool force = false) override;
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CalculationSelectableTableView * m_mainView;
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ExpressionField m_expressionField;
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};
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void reloadView();
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void clearCacheBuffer() { m_cacheBuffer[0] = 0; *m_cacheBufferInformation = 0; }
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bool inputViewDidReceiveEvent(Ion::Events::Event event, bool shouldDuplicateLastCalculation);
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bool inputViewDidFinishEditing(const char * text, Poincare::Layout layoutR);
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bool inputViewDidAbortEditing(const char * text);
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char * m_cacheBuffer;
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size_t * m_cacheBufferInformation;
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HistoryController * m_historyController;
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CalculationStore * m_calculationStore;
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ContentView m_contentView;
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};
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}
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#endif
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