apply_line_edit.h

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#ifndef UI_QT_APPLY_LINE_EDIT_H_
#define UI_QT_APPLY_LINE_EDIT_H_
 
#include <QLineEdit>
#include <QString>
#include <QToolButton>

class ApplyLineEdit : public QLineEdit
{
    Q_OBJECT
 
public:
    explicit ApplyLineEdit(QString linePlaceholderText, QWidget *parent = 0);

    ~ApplyLineEdit();

    Q_PROPERTY(QString regex READ regex WRITE setRegEx)
 
    
    Q_PROPERTY(bool emptyAllowed READ emptyAllowed WRITE setEmptyAllowed)

    QString regex();

    void setRegEx(QString regex);

    bool emptyAllowed();

    void setEmptyAllowed(bool emptyAllowed);
 
signals:
    void textApplied();
 
protected:
    void resizeEvent(QResizeEvent *event) override;
 
private:
    QString regex_;              
    bool emptyAllowed_;          
    QToolButton *apply_button_; 

    bool isValidText(QString &text, bool ignoreEmptyCheck = false);

    void handleValidation(QString newText);
 
private slots:
    void onTextEdited(const QString &text);

    void onTextChanged(const QString &text);

    void onSubmitContent();
};
 
#endif /* UI_QT_APPLY_LINE_EDIT_H_ */