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#ifndef CONSTRAINTPANEL_H
#define CONSTRAINTPANEL_H
#include "db/db.h"
#include "parser/ast/sqlitecreatetable.h"
#include "guiSQLiteStudio_global.h"
#include <QWidget>
#include <QPointer>
class GUI_API_EXPORT ConstraintPanel : public QWidget
{
Q_OBJECT
public:
explicit ConstraintPanel(QWidget *parent = 0);
virtual ~ConstraintPanel();
void setConstraint(SqliteStatement* stmt);
void storeDefinition();
virtual void setDb(Db* value);
/**
* @brief validate Validates panel for correct data filled in.
* @return true if the data is valid, or false otherwise.
* Apart from returning boolean result it also marks
* invalid fields with red color. See validateOnly() description
* for details on differences between those two methods.
*/
virtual bool validate() = 0;
/**
* @brief validateOnly Validates panel for correct data filled in.
* @return true if the data is valid, or false otherwise.
* The difference between validateOnly() and validate() is that validateOnly()
* will run all validations immediately (ie. SQL syntax checking
* in DEFAULT constraint, etc), while the validate() will wait for
* SqlEditor to do the validation in its scheduled time and return
* false until the validation isn't done yet.
* The validate() should be used when user actually edits the panel,
* while validateOnly() is to be used when using ConstraintPanel for validation
* of a Constraint object, but not displayed - in that case the validation
* result is needed immediately and that's where validateOnly() does its job.
* Not every constraint panel has to reimplement this. Most of the constraints
* don't work asynchronously and return proper result just from a validate() call.
* In that case the default implementation of validateOnly() will do the job.
*/
virtual bool validateOnly();
static ConstraintPanel* produce(SqliteCreateTable::Constraint* constr);
static ConstraintPanel* produce(SqliteCreateTable::Column::Constraint* constr);
protected:
/**
* @brief constraintAvailable
* This method is called once the constraint object (the member variable)
* is available to the panel as well, as the database (the db member).
* The implementation should read values from constraint object and put them
* to panel's fields, but also initialise any database related data,
* like existing collations, etc.
*/
virtual void constraintAvailable() = 0;
/**
* @brief storeConfiguration
* The implementation should store all field valies into the constraint object.
*/
virtual void storeConfiguration() = 0;
Db* db = nullptr;
QPointer<SqliteStatement> constraint;
public slots:
signals:
void updateValidation();
};
#endif // CONSTRAINTPANEL_H
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