/***************************************************************************
                          qgseditformconfig.sip
                             -------------------
    begin                : Nov 18, 2015
    copyright            : (C) 2015 by Matthias Kuhn
    email                : matthias at opengis dot ch
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

class QgsEditFormConfig
{
%TypeHeaderCode
#include <qgseditformconfig.h>
%End

  public:
    /** The different types to layout the attribute editor. */
    enum EditorLayout
    {
      GeneratedLayout = 0, //!< Autogenerate a simple tabular layout for the form
      TabLayout = 1,       //!< Use a layout with tabs and group boxes. Needs to be configured.
      UiFileLayout = 2     //!< Load a .ui file for the layout. Needs to be configured.
    };

    struct GroupData
    {
      GroupData();
      GroupData( const QString& name, const QList<QString>& fields );
      QString mName;
      QList<QString> mFields;
    };

    struct TabData
    {
      TabData();
      TabData( const QString& name, const QList<QString>& fields, const QList<QgsEditFormConfig::GroupData>& groups );
      QString mName;
      QList<QString> mFields;
      QList<QgsEditFormConfig::GroupData> mGroups;
    };

    /**
     * Types of feature form suppression after feature creation
     */
    enum FeatureFormSuppress
    {
      SuppressDefault = 0, //!< Use the application-wide setting
      SuppressOn = 1,      //!< Suppress feature form
      SuppressOff = 2      //!< Do not suppress feature form
    };

    /**
     * The python init code source options.
     */
    enum PythonInitCodeSource
    {
      CodeSourceNone,             //!< Do not use python code at all
      CodeSourceFile,             //!< Load the python code from an external file
      CodeSourceDialog,           //!< Use the python code provided in the dialog
      CodeSourceEnvironment       //!< Use the python code available in the python environment
    };

    /**
     * This is only useful in combination with EditorLayout::TabLayout.
     *
     * Adds a new tab to the layout. Should be a QgsAttributeEditorContainer.
     */
    void addTab( QgsAttributeEditorElement* data /Transfer/ );

    /**
     * Returns a list of tabs for EditorLayout::TabLayout.
     */
    QList< QgsAttributeEditorElement* > tabs();

    /**
     * Clears all the tabs for the attribute editor form with EditorLayout::TabLayout.
     */
    void clearTabs();

    /**
     * Get the invisible root container for the drag and drop designer form (EditorLayout::TabLayout).
     *
     * @note Added in QGIS 3
     */
    QgsAttributeEditorContainer* invisibleRootContainer();

    /** Get the active layout style for the attribute editor for this layer */
    EditorLayout layout();

    /** Set the active layout style for the attribute editor for this layer */
    void setLayout( EditorLayout editorLayout );

    /** Get path to the .ui form. Only meaningful with EditorLayout::UiFileLayout. */
    QString uiForm() const;

    /**
     * Set path to the .ui form.
     * When a string is provided, the layout style will be set to EditorLayout::UiFileLayout,
     * if an empty or a null string is provided, the layout style will be set to
     * EditorLayout::GeneratedLayout.
     */
    void setUiForm( const QString& ui );
    bool setWidgetConfig( const QString& widgetName, const QVariantMap& config );
    QVariantMap widgetConfig( const QString& widgetName ) const;
    bool removeWidgetConfig( const QString& widgetName );

    bool readOnly( int idx ) const;

    /**
     * If set to false, the widget at the given index will be read-only.
     */
    void setReadOnly( int idx, bool readOnly = true );

    /**
     * If this returns true, the widget at the given index will receive its label on the previous line
     * while if it returns false, the widget will receive its label on the left hand side.
     * Labeling on top leaves more horizontal space for the widget itself.
     **/
    bool labelOnTop( int idx ) const;

    /**
     * If this is set to true, the widget at the given index will receive its label on
     * the previous line while if it is set to false, the widget will receive its label
     * on the left hand side.
     * Labeling on top leaves more horizontal space for the widget itself.
     **/
    void setLabelOnTop( int idx, bool onTop );


    // Python form init function stuff

    /**
     * Get python function for edit form initialization.
     * Will be looked up in a python file relative to the project folder if it
     * includes a module name or if it's a pure function name it will searched
     * in the python code set with @link setInitCode @endlink.
     */
    QString initFunction() const;

    /**
     * Set python function for edit form initialization.
     * Will be looked up in a python file relative to the project folder if it
     * includes a module name or if it's a pure function name it will searched
     * in the python code set with @link setInitCode @endlink.
     */
    void setInitFunction( const QString& function );

    /**
     * Get python code for edit form initialization.
     */
    QString initCode() const;

    /**
     * Set python code for edit form initialization.
     * Make sure that you also set the appropriate function name in
     * @link setInitFunction @endlink
     */
    void setInitCode( const QString& code );

    /**
     * Get python external file path for edit form initialization.
     */
    QString initFilePath() const;

    /**
     * Set python external file path for edit form initialization.
     * Make sure that you also set the appropriate function name in
     * @link setInitFunction @endlink
     */
    void setInitFilePath( const QString& filePath );

    /** Return python code source for edit form initialization
     *  (if it shall be loaded from a file, read from the
     *  provided dialog editor or inherited from the environment)
     */
    PythonInitCodeSource initCodeSource() const;

    /** Set if python code shall be used for edit form initialization and its origin */
    void setInitCodeSource( PythonInitCodeSource initCodeSource );

    /** Type of feature form pop-up suppression after feature creation (overrides app setting) */
    FeatureFormSuppress suppress() const;
    /** Set type of feature form pop-up suppression after feature creation (overrides app setting) */
    void setSuppress( QgsEditFormConfig::FeatureFormSuppress s );

    // Serialization

    /**
     * Read XML information
     * Deserialize on project load
     */
    void readXml( const QDomNode& node );

    /**
     * Write XML information
     * Serialize on project save
     */
    void writeXml( QDomNode& node ) const;

    /**
     * Deserialize drag and drop designer elements.
     */
    QgsAttributeEditorElement* attributeEditorElementFromDomElement( QDomElement &elem, QgsAttributeEditorElement* parent );
};