qgsfilecontentsourcelineedit.h

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/***************************************************************************
 qgsfilecontentsourcelineedit.h
 ---------------------
 begin                : July 2018
 copyright            : (C) 2018 by Nyall Dawson
 email                : nyall dot dawson at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef QGSFILECONTENTSOURCELINEEDIT_H
#define QGSFILECONTENTSOURCELINEEDIT_H

#include "qgis_gui.h"
#include "qgis_sip.h"
#include <QWidget>
#include <QString>

class QgsFilterLineEdit;
class QToolButton;
class QgsMessageBar;

#ifndef SIP_RUN
class GUI_EXPORT QgsAbstractFileContentSourceLineEdit : public QWidget
{
#else
class GUI_EXPORT QgsAbstractFileContentSourceLineEdit : public QWidget SIP_ABSTRACT
{
#endif
    Q_OBJECT
    Q_PROPERTY( QString source READ source WRITE setSource NOTIFY sourceChanged )

  public:

    QgsAbstractFileContentSourceLineEdit( QWidget *parent SIP_TRANSFERTHIS = nullptr );

    void setMessageBar( QgsMessageBar *bar );

    QgsMessageBar *messageBar() const;

    QString source() const;

    void setLastPathSettingsKey( const QString &key );

  public slots:

    void setSource( const QString &source );

  signals:

    void sourceChanged( const QString &source );

  private:

#ifndef SIP_RUN

    virtual QString fileFilter() const = 0;

    virtual QString selectFileTitle() const = 0;

    virtual QString fileFromUrlTitle() const = 0;

    virtual QString fileFromUrlText() const = 0;

    virtual QString embedFileTitle() const = 0;

    virtual QString extractFileTitle() const = 0;

    virtual QString defaultSettingsKey() const = 0;

#endif

  private slots:
    void selectFile();
    void selectUrl();
    void embedFile();
    void extractFile();
    void mFileLineEdit_textEdited( const QString &text );

  private:

    enum Mode
    {
      ModeFile,
      ModeBase64,
    };

    Mode mMode = ModeFile;

    QgsFilterLineEdit *mFileLineEdit = nullptr;
    QToolButton *mFileToolButton = nullptr;
    QString mLastPathKey;
    QString mBase64;
    QgsMessageBar *mMessageBar = nullptr;

    QString defaultPath() const;
    QString settingsKey() const;

};

class GUI_EXPORT QgsSvgSourceLineEdit : public QgsAbstractFileContentSourceLineEdit
{
    Q_OBJECT
  public:

    QgsSvgSourceLineEdit( QWidget *parent SIP_TRANSFERTHIS = nullptr )
      : QgsAbstractFileContentSourceLineEdit( parent )
    {}

  private:

#ifndef SIP_RUN
    QString fileFilter() const override;
    QString selectFileTitle() const override;
    QString fileFromUrlTitle() const override;
    QString fileFromUrlText() const override;
    QString embedFileTitle() const override;
    QString extractFileTitle() const override;
    QString defaultSettingsKey() const override;
#endif
};


class GUI_EXPORT QgsImageSourceLineEdit : public QgsAbstractFileContentSourceLineEdit
{
    Q_OBJECT
  public:

    QgsImageSourceLineEdit( QWidget *parent SIP_TRANSFERTHIS = nullptr )
      : QgsAbstractFileContentSourceLineEdit( parent )
    {}

  private:
#ifndef SIP_RUN
    QString fileFilter() const override;
    QString selectFileTitle() const override;
    QString fileFromUrlTitle() const override;
    QString fileFromUrlText() const override;
    QString embedFileTitle() const override;
    QString extractFileTitle() const override;
    QString defaultSettingsKey() const override;
#endif
};

#endif // QGSFILECONTENTSOURCELINEEDIT_H