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40 lines
1.3 KiB
C++
40 lines
1.3 KiB
C++
#ifndef SHARED_EXPRESSION_MODEL_H
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#define SHARED_EXPRESSION_MODEL_H
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#include <poincare.h>
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#include <kandinsky.h>
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#include <escher.h>
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namespace Shared {
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class ExpressionModel {
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public:
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ExpressionModel();
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virtual ~ExpressionModel(); // Delete expression and layout, if needed
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ExpressionModel& operator=(const ExpressionModel& other);
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ExpressionModel& operator=(ExpressionModel&& other) = delete;
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ExpressionModel(const ExpressionModel& other) = delete;
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ExpressionModel(ExpressionModel&& other) = delete;
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const char * text() const;
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Poincare::Expression * expression(Poincare::Context * context) const;
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Poincare::ExpressionLayout * layout();
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virtual bool isDefined();
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virtual bool isEmpty();
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virtual bool shouldBeClearedBeforeRemove() {
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return !isEmpty();
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}
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virtual void setContent(const char * c);
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virtual void tidy();
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constexpr static int k_expressionBufferSize = TextField::maxBufferSize();
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private:
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constexpr static size_t k_dataLengthInBytes = (TextField::maxBufferSize())*sizeof(char);
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static_assert((k_dataLengthInBytes & 0x3) == 0, "The expression model data size is not a multiple of 4 bytes (cannot compute crc)"); // Assert that dataLengthInBytes is a multiple of 4
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char m_text[k_expressionBufferSize];
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mutable Poincare::Expression * m_expression;
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mutable Poincare::ExpressionLayout * m_layout;
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};
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}
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#endif
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