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qgsgrassprovidermodule.h
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qgsgrassprovidermodule.h
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/***************************************************************************
qgsgrassprovidermodule.h - Data provider for GRASS format
-------------------
begin : March, 2004
copyright : (C) 2004 by Gary E.Sherman, Radim Blazek
email : sherman@mrcc.com, blazek@itc.it
***************************************************************************/
/***************************************************************************
* *
* 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 QGSGRASSPROVIDERMODULE_H
#define QGSGRASSPROVIDERMODULE_H
#include "qgsdataitem.h"
#include "qgsgrass.h"
#include "qgsgrassimport.h"
#include "qgsdirectoryitem.h"
#include "qgslayeritem.h"
#include "qgsdatacollectionitem.h"
#include "qgsprovidermetadata.h"
class QTextEdit;
class QProgressBar;
class QgsGrassImportItem;
#ifdef HAVE_GUI
/* Qt does not allow inheritance from multiple QObjects, that is why we have QgsGrassItemActions
* to keep common actions. QgsGrassItemActions must be children of data items, so that when a data item
* is moved to to another thread, it moves also QgsGrassItemActions and signals work.
* That is why each data item class keeps QgsGrassItemActions, instead of putting them to QgsGrassObjectItemBase,
* because it would be ugly and dangerous to be parent of member's member.
*/
class QgsGrassItemActions : public QObject
{
Q_OBJECT
public:
QgsGrassItemActions( const QgsGrassObject &grassObject, bool valid, QObject *parent );
QList<QAction *> actions( QWidget *parent );
public slots:
void newMapset();
void openMapset();
void addMapsetToSearchPath();
void removeMapsetFromSearchPath();
void renameGrassObject();
void deleteGrassObject();
void newPointLayer();
void newLineLayer();
void newPolygonLayer();
private:
// returns name of new vector map or empty string
QString newVectorMap();
void newLayer( const QString &type );
QgsGrassObject mGrassObject;
// Grass object is valid
bool mValid;
};
#else
// just a forward declaration
class QgsGrassItemActions;
#endif
class QgsGrassObjectItemBase
{
public:
// actionsParent so that actions are moved to thread with item
explicit QgsGrassObjectItemBase( const QgsGrassObject &grassObject );
bool equal( const QgsDataItem *other );
protected:
QgsGrassObject mGrassObject;
};
class QgsGrassLocationItem : public QgsDirectoryItem, public QgsGrassObjectItemBase
{
Q_OBJECT
public:
QgsGrassLocationItem( QgsDataItem *parent, const QString &dirPath, const QString &path );
QIcon icon() override;
QVector<QgsDataItem *> createChildren() override;
#ifdef HAVE_GUI
QList<QAction *> actions( QWidget *parent ) override { return mActions->actions( parent ); }
#endif
private:
QgsGrassItemActions *mActions = nullptr;
QgsGrassLocationItem( const QgsGrassLocationItem & ) = delete;
QgsGrassLocationItem &operator=( const QgsGrassLocationItem & ) = delete;
};
class QgsGrassMapsetItem : public QgsDirectoryItem, public QgsGrassObjectItemBase
{
Q_OBJECT
public:
QgsGrassMapsetItem( QgsDataItem *parent, const QString &dirPath, const QString &path );
void setState( Qgis::BrowserItemState state ) override;
QIcon icon() override;
QVector<QgsDataItem *> createChildren() override;
#ifdef HAVE_GUI
QList<QAction *> actions( QWidget *parent ) override { return mActions->actions( parent ); }
#endif
bool acceptDrop() override;
bool handleDrop( const QMimeData *data, Qt::DropAction action ) override;
public slots:
void onImportFinished( QgsGrassImport *import );
void onDirectoryChanged();
void childrenCreated() override;
private:
bool objectInImports( const QgsGrassObject &grassObject );
QgsGrassItemActions *mActions = nullptr;
//void showImportError(const QString& error);
QFileSystemWatcher *mMapsetFileSystemWatcher = nullptr;
bool mRefreshLater;
// running imports
static QList<QgsGrassImport *> sImports;
QgsGrassMapsetItem( const QgsGrassMapsetItem & ) = delete;
QgsGrassMapsetItem &operator=( const QgsGrassMapsetItem & ) = delete;
};
class QgsGrassObjectItem : public QgsLayerItem, public QgsGrassObjectItemBase
{
Q_OBJECT
public:
QgsGrassObjectItem( QgsDataItem *parent, const QgsGrassObject &grassObject,
const QString &name, const QString &path, const QString &uri,
Qgis::BrowserLayerType layerType, const QString &providerKey );
#ifdef HAVE_GUI
QList<QAction *> actions( QWidget *parent ) override { return mActions->actions( parent ); }
#endif
bool equal( const QgsDataItem *other ) override;
protected:
QgsGrassItemActions *mActions = nullptr;
QgsGrassObjectItem( const QgsGrassObjectItem & ) = delete;
QgsGrassObjectItem &operator=( const QgsGrassObjectItem & ) = delete;
};
// Vector is collection of layers
class QgsGrassVectorItem : public QgsDataCollectionItem, public QgsGrassObjectItemBase
{
Q_OBJECT
public:
// labelName - name to be displayed in tree if it should be different from grassObject.name() (e.g. invalid vector)
QgsGrassVectorItem( QgsDataItem *parent, const QgsGrassObject &grassObject, const QString &path, const QString &labelName = QString(), bool valid = true );
~QgsGrassVectorItem() override;
#ifdef HAVE_GUI
QList<QAction *> actions( QWidget *parent ) override { return mActions->actions( parent ); }
#endif
bool equal( const QgsDataItem *other ) override;
public slots:
void onDirectoryChanged();
private:
bool mValid;
QgsGrassItemActions *mActions = nullptr;
QFileSystemWatcher *mWatcher = nullptr;
QgsGrassVectorItem( const QgsGrassVectorItem & ) = delete;
QgsGrassVectorItem &operator= ( const QgsGrassVectorItem & ) = delete;
};
class QgsGrassVectorLayerItem : public QgsGrassObjectItem
{
Q_OBJECT
public:
QgsGrassVectorLayerItem( QgsDataItem *parent, const QgsGrassObject &vector, const QString &layerName,
const QString &path, const QString &uri, Qgis::BrowserLayerType layerType, bool singleLayer );
QString layerName() const override;
bool equal( const QgsDataItem *other ) override;
private:
// layer from single layer vector map (cannot have delete action)
bool mSingleLayer;
};
class QgsGrassRasterItem : public QgsGrassObjectItem
{
Q_OBJECT
public:
QgsGrassRasterItem( QgsDataItem *parent, const QgsGrassObject &grassObject,
const QString &path, const QString &uri, bool isExternal );
QIcon icon() override;
bool equal( const QgsDataItem *other ) override;
private:
// is external created by r.external
bool mExternal;
};
// Imagery group
class QgsGrassGroupItem : public QgsGrassObjectItem
{
Q_OBJECT
public:
QgsGrassGroupItem( QgsDataItem *parent, const QgsGrassObject &grassObject,
const QString &path, const QString &uril );
QIcon icon() override;
};
#ifdef HAVE_GUI
class QgsGrassImportItemWidget : public QWidget
{
Q_OBJECT
public:
explicit QgsGrassImportItemWidget( QWidget *parent = nullptr );
void setHtml( const QString &html );
public slots:
void onProgressChanged( const QString &recentHtml, const QString &allHtml, int min, int max, int value );
private:
QTextEdit *mTextEdit = nullptr;
QProgressBar *mProgressBar = nullptr;
};
#endif
// item representing a layer being imported
class QgsGrassImportItem : public QgsDataItem, public QgsGrassObjectItemBase
{
Q_OBJECT
public:
QgsGrassImportItem( QgsDataItem *parent, const QString &name, const QString &path, QgsGrassImport *import );
~QgsGrassImportItem() override;
//void setState( State state ) override {
// QgsDataItem::setState(state);
//} // do nothing to keep Populating
#ifdef HAVE_GUI
QList<QAction *> actions( QWidget *parent ) override;
QWidget *paramWidget() override;
#endif
QIcon icon() override;
public slots:
void refresh() override {}
#ifdef HAVE_GUI
void cancel();
#endif
protected:
// override refresh to keep Populating state
void refresh( const QVector<QgsDataItem *> &children ) override { Q_UNUSED( children ) }
//bool mDeleteAction;
QgsGrassImport *mImport = nullptr;
private:
static QgsAnimatedIcon *sImportIcon;
};
class QgsGrassProviderMetadata: public QgsProviderMetadata
{
Q_OBJECT
public:
QgsGrassProviderMetadata();
QgsDataProvider *createProvider( const QString &uri, const QgsDataProvider::ProviderOptions &options, QgsDataProvider::ReadFlags flags = QgsDataProvider::ReadFlags() ) override;
QList< QgsDataItemProvider * > dataItemProviders() const override;
void initProvider() override;
};
#endif // QGSGRASSPROVIDERMODULE_H