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qgsdataitem.cpp
1495 lines (1288 loc) · 41 KB
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qgsdataitem.cpp
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/***************************************************************************
qgsdataitem.cpp - Data items
-------------------
begin : 2011-04-01
copyright : (C) 2011 Radim Blazek
email : radim dot blazek 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. *
* *
***************************************************************************/
#include <QApplication>
#include <QtConcurrentMap>
#include <QtConcurrentRun>
#include <QDateTime>
#include <QDir>
#include <QFileInfo>
#include <QMenu>
#include <QMouseEvent>
#include <QTreeWidget>
#include <QTreeWidgetItem>
#include <QVector>
#include <QStyle>
#include <QSettings>
#include "qgis.h"
#include "qgsdataitem.h"
#include "qgsdataitemprovider.h"
#include "qgsdataitemproviderregistry.h"
#include "qgsdataprovider.h"
#include "qgslogger.h"
#include "qgsproviderregistry.h"
#include "qgsconfig.h"
// use GDAL VSI mechanism
#include "cpl_vsi.h"
#include "cpl_string.h"
QgsAnimatedIcon::QgsAnimatedIcon( const QString & iconPath )
: QObject()
, mCount( 0 )
, mMovie( 0 )
{
// QApplication as parent to ensure that it is deleted before QApplication
mMovie = new QMovie( QApplication::instance() );
if ( !iconPath.isEmpty() )
{
mMovie->setFileName( iconPath );
}
mMovie->setCacheMode( QMovie::CacheAll );
connect( mMovie, SIGNAL( frameChanged( int ) ), SLOT( onFrameChanged() ) );
}
QString QgsAnimatedIcon::iconPath() const
{
return mMovie->fileName();
}
void QgsAnimatedIcon::setIconPath( const QString & iconPath )
{
mMovie->setFileName( iconPath );
}
void QgsAnimatedIcon::onFrameChanged()
{
mIcon = QIcon( mMovie->currentPixmap() );
emit frameChanged();
}
void QgsAnimatedIcon::connectFrameChanged( const QObject * receiver, const char * method )
{
if ( connect( this, SIGNAL( frameChanged() ), receiver, method ) )
{
mCount++;
}
mMovie->setPaused( mCount == 0 );
QgsDebugMsg( QString( "mCount = %1" ).arg( mCount ) );
}
void QgsAnimatedIcon::disconnectFrameChanged( const QObject * receiver, const char * method )
{
if ( disconnect( this, SIGNAL( frameChanged() ), receiver, method ) )
{
mCount--;
}
mMovie->setPaused( mCount == 0 );
QgsDebugMsg( QString( "mCount = %1" ).arg( mCount ) );
}
// shared icons
const QIcon &QgsLayerItem::iconPoint()
{
static QIcon icon;
if ( icon.isNull() )
icon = QgsApplication::getThemeIcon( "/mIconPointLayer.svg" );
return icon;
}
const QIcon &QgsLayerItem::iconLine()
{
static QIcon icon;
if ( icon.isNull() )
icon = QgsApplication::getThemeIcon( "/mIconLineLayer.svg" );
return icon;
}
const QIcon &QgsLayerItem::iconPolygon()
{
static QIcon icon;
if ( icon.isNull() )
icon = QgsApplication::getThemeIcon( "/mIconPolygonLayer.svg" );
return icon;
}
const QIcon &QgsLayerItem::iconTable()
{
static QIcon icon;
if ( icon.isNull() )
icon = QgsApplication::getThemeIcon( "/mIconTableLayer.png" );
return icon;
}
const QIcon &QgsLayerItem::iconRaster()
{
static QIcon icon;
if ( icon.isNull() )
icon = QgsApplication::getThemeIcon( "/mIconRaster.svg" );
return icon;
}
const QIcon &QgsLayerItem::iconDefault()
{
static QIcon icon;
if ( icon.isNull() )
icon = QgsApplication::getThemeIcon( "/mIconLayer.png" );
return icon;
}
const QIcon &QgsDataCollectionItem::iconDataCollection()
{
static QIcon icon;
if ( icon.isNull() )
icon = QgsApplication::getThemeIcon( "/mIconDbSchema.png" );
return icon;
}
const QIcon &QgsDataCollectionItem::iconDir()
{
static QIcon icon;
if ( icon.isNull() )
{
// initialize shared icons
QStyle *style = QApplication::style();
icon = QIcon( style->standardPixmap( QStyle::SP_DirClosedIcon ) );
icon.addPixmap( style->standardPixmap( QStyle::SP_DirOpenIcon ),
QIcon::Normal, QIcon::On );
}
return icon;
}
const QIcon &QgsFavouritesItem::iconFavourites()
{
static QIcon icon;
if ( icon.isNull() )
icon = QgsApplication::getThemeIcon( "/mIconFavourites.png" );
return icon;
}
const QIcon &QgsZipItem::iconZip()
{
static QIcon icon;
if ( icon.isNull() )
icon = QgsApplication::getThemeIcon( "/mIconZip.png" );
// icon from http://www.softicons.com/free-icons/application-icons/mega-pack-icons-1-by-nikolay-verin/winzip-folder-icon
return icon;
}
QMap<QString, QIcon> QgsDataItem::mIconMap = QMap<QString, QIcon>();
QgsAnimatedIcon * QgsDataItem::mPopulatingIcon = 0;
QgsDataItem::QgsDataItem( QgsDataItem::Type type, QgsDataItem* parent, QString name, QString path )
// Do not pass parent to QObject, Qt would delete this when parent is deleted
: QObject()
, mType( type )
, mCapabilities( NoCapabilities )
, mParent( parent )
, mState( NotPopulated )
, mPopulated( false )
, mName( name )
, mPath( path )
, mDeferredDelete( false )
, mFutureWatcher( 0 )
{
}
QgsDataItem::~QgsDataItem()
{
QgsDebugMsgLevel( QString( "mName = %1 mPath = %2 mChildren.size() = %3" ).arg( mName ).arg( mPath ).arg( mChildren.size() ), 2 );
foreach ( QgsDataItem *child, mChildren )
{
if ( !child ) // should not happen
continue;
child->deleteLater();
}
mChildren.clear();
if ( mFutureWatcher && !mFutureWatcher->isFinished() )
{
// this should not usually happen (until the item was deleted directly when createChildren was running)
QgsDebugMsg( "mFutureWatcher not finished (should not happen) -> waitForFinished()" );
mDeferredDelete = true;
mFutureWatcher->waitForFinished();
}
}
QString QgsDataItem::pathComponent( const QString &string )
{
return QString( string ).replace( QRegExp( "[\\\\/]" ), "|" );
}
void QgsDataItem::deleteLater()
{
QgsDebugMsg( "path = " + path() );
setParent( 0 ); // also disconnects parent
foreach ( QgsDataItem *child, mChildren )
{
if ( !child ) // should not happen
continue;
child->deleteLater();
}
mChildren.clear();
if ( mFutureWatcher && !mFutureWatcher->isFinished() )
{
QgsDebugMsg( "mFutureWatcher not finished -> schedule to delete later" );
mDeferredDelete = true;
}
else
{
QObject::deleteLater();
}
}
void QgsDataItem::deleteLater( QVector<QgsDataItem*> &items )
{
foreach ( QgsDataItem *item, items )
{
if ( !item ) // should not happen
continue;
item->deleteLater();
}
items.clear();
}
void QgsDataItem::moveToThread( QThread * targetThread )
{
// QObject::moveToThread() cannot move objects with parent, but QgsDataItem is not using paren/children from QObject
foreach ( QgsDataItem* child, mChildren )
{
if ( !child ) // should not happen
continue;
QgsDebugMsg( "moveToThread child " + child->path() );
child->QObject::setParent( 0 ); // to be sure
child->moveToThread( targetThread );
}
QObject::moveToThread( targetThread );
}
QIcon QgsDataItem::icon()
{
if ( state() == Populating && mPopulatingIcon )
return mPopulatingIcon->icon();
if ( !mIcon.isNull() )
return mIcon;
if ( !mIconMap.contains( mIconName ) )
{
mIconMap.insert( mIconName, mIconName.startsWith( ":" ) ? QIcon( mIconName ) : QgsApplication::getThemeIcon( mIconName ) );
}
return mIconMap.value( mIconName );
}
void QgsDataItem::emitBeginInsertItems( QgsDataItem* parent, int first, int last )
{
emit beginInsertItems( parent, first, last );
}
void QgsDataItem::emitEndInsertItems()
{
emit endInsertItems();
}
void QgsDataItem::emitBeginRemoveItems( QgsDataItem* parent, int first, int last )
{
emit beginRemoveItems( parent, first, last );
}
void QgsDataItem::emitEndRemoveItems()
{
emit endRemoveItems();
}
void QgsDataItem::emitDataChanged( QgsDataItem* item )
{
emit dataChanged( item );
}
void QgsDataItem::emitDataChanged()
{
emit dataChanged( this );
}
void QgsDataItem::emitStateChanged( QgsDataItem* item, QgsDataItem::State oldState )
{
if ( !item )
return;
QgsDebugMsg( QString( "item %1 state changed %2 -> %3" ).arg( item->path() ).arg( oldState ).arg( item->state() ) );
emit stateChanged( item, oldState );
}
QVector<QgsDataItem*> QgsDataItem::createChildren()
{
return QVector<QgsDataItem*>();
}
void QgsDataItem::populate( bool foreground )
{
if ( state() == Populated || state() == Populating )
return;
QgsDebugMsg( "mPath = " + mPath );
if ( capabilities2() & QgsDataItem::Fast || foreground )
{
populate( createChildren() );
}
else
{
setState( Populating );
// The watcher must not be created with item (in constructor) because the item may be created in thread and the watcher created in thread does not work correctly.
if ( !mFutureWatcher )
{
mFutureWatcher = new QFutureWatcher< QVector <QgsDataItem*> >( this );
}
connect( mFutureWatcher, SIGNAL( finished() ), SLOT( childrenCreated() ) );
mFutureWatcher->setFuture( QtConcurrent::run( runCreateChildren, this ) );
}
}
// This is expected to be run in a separate thread
QVector<QgsDataItem*> QgsDataItem::runCreateChildren( QgsDataItem* item )
{
QgsDebugMsg( "path = " + item->path() );
QTime time;
time.start();
QVector <QgsDataItem*> children = item->createChildren();
QgsDebugMsg( QString( "%1 children created in %2 ms" ).arg( children.size() ).arg( time.elapsed() ) );
// Children objects must be pushed to main thread.
foreach ( QgsDataItem* child, children )
{
if ( !child ) // should not happen
continue;
QgsDebugMsg( "moveToThread child " + child->path() );
child->moveToThread( QApplication::instance()->thread() ); // moves also children
}
QgsDebugMsg( QString( "finished path %1: %2 children" ).arg( item->path() ).arg( children.size() ) );
return children;
}
void QgsDataItem::childrenCreated()
{
QgsDebugMsg( QString( "path = %1 children.size() = %2" ).arg( path() ).arg( mFutureWatcher->result().size() ) );
if ( deferredDelete() )
{
QgsDebugMsg( "Item was scheduled to be deleted later" );
QObject::deleteLater();
return;
}
if ( mChildren.size() == 0 ) // usually populating but may also be refresh if originaly there were no children
{
populate( mFutureWatcher->result() );
}
else // refreshing
{
refresh( mFutureWatcher->result() );
}
disconnect( mFutureWatcher, SIGNAL( finished() ), this, SLOT( childrenCreated() ) );
emit dataChanged( this ); // to replace loading icon by normal icon
}
void QgsDataItem::populate( QVector<QgsDataItem*> children )
{
QgsDebugMsg( "mPath = " + mPath );
foreach ( QgsDataItem *child, children )
{
if ( !child ) // should not happen
continue;
// update after thread finished -> refresh
addChildItem( child, true );
}
setState( Populated );
}
void QgsDataItem::depopulate()
{
QgsDebugMsg( "mPath = " + mPath );
foreach ( QgsDataItem *child, mChildren )
{
QgsDebugMsg( "remove " + child->path() );
child->depopulate(); // recursive
deleteChildItem( child );
}
setState( NotPopulated );
}
void QgsDataItem::refresh()
{
if ( state() == Populating )
return;
QgsDebugMsg( "mPath = " + mPath );
if ( capabilities2() & QgsDataItem::Fast )
{
refresh( createChildren() );
}
else
{
setState( Populating );
if ( !mFutureWatcher )
{
mFutureWatcher = new QFutureWatcher< QVector <QgsDataItem*> >( this );
}
connect( mFutureWatcher, SIGNAL( finished() ), SLOT( childrenCreated() ) );
mFutureWatcher->setFuture( QtConcurrent::run( runCreateChildren, this ) );
}
}
void QgsDataItem::refresh( QVector<QgsDataItem*> children )
{
QgsDebugMsgLevel( "mPath = " + mPath, 2 );
// Remove no more present children
QVector<QgsDataItem*> remove;
foreach ( QgsDataItem *child, mChildren )
{
if ( !child ) // should not happen
continue;
if ( findItem( children, child ) >= 0 )
continue;
remove.append( child );
}
foreach ( QgsDataItem *child, remove )
{
QgsDebugMsg( "remove " + child->path() );
deleteChildItem( child );
}
// Add new children
foreach ( QgsDataItem *child, children )
{
if ( !child ) // should not happen
continue;
int index = findItem( mChildren, child );
if ( index >= 0 )
{
// Refresh recursively (some providers may create more generations of descendants)
if ( !( child->capabilities2() & QgsDataItem::Fertile ) )
{
// The child cannot createChildren() itself
mChildren.value( index )->refresh( child->children() );
}
child->deleteLater();
continue;
}
addChildItem( child, true );
}
setState( Populated );
}
int QgsDataItem::rowCount()
{
return mChildren.size();
}
bool QgsDataItem::hasChildren()
{
return ( state() == Populated ? mChildren.count() > 0 : true );
}
void QgsDataItem::setParent( QgsDataItem* parent )
{
if ( mParent )
{
disconnect( this, 0, mParent, 0 );
}
if ( parent )
{
connect( this, SIGNAL( beginInsertItems( QgsDataItem*, int, int ) ),
parent, SLOT( emitBeginInsertItems( QgsDataItem*, int, int ) ) );
connect( this, SIGNAL( endInsertItems() ),
parent, SLOT( emitEndInsertItems() ) );
connect( this, SIGNAL( beginRemoveItems( QgsDataItem*, int, int ) ),
parent, SLOT( emitBeginRemoveItems( QgsDataItem*, int, int ) ) );
connect( this, SIGNAL( endRemoveItems() ),
parent, SLOT( emitEndRemoveItems() ) );
connect( this, SIGNAL( dataChanged( QgsDataItem* ) ),
parent, SLOT( emitDataChanged( QgsDataItem* ) ) );
connect( this, SIGNAL( stateChanged( QgsDataItem*, QgsDataItem::State ) ),
parent, SLOT( emitStateChanged( QgsDataItem*, QgsDataItem::State ) ) );
}
mParent = parent;
}
void QgsDataItem::addChildItem( QgsDataItem * child, bool refresh )
{
Q_ASSERT( child );
QgsDebugMsg( QString( "path = %1 add child #%2 - %3 - %4" ).arg( mPath ).arg( mChildren.size() ).arg( child->mName ).arg( child->mType ) );
int i;
if ( type() == Directory )
{
for ( i = 0; i < mChildren.size(); i++ )
{
// sort items by type, so directories are before data items
if ( mChildren[i]->mType == child->mType &&
mChildren[i]->mName.localeAwareCompare( child->mName ) > 0 )
break;
}
}
else
{
for ( i = 0; i < mChildren.size(); i++ )
{
if ( mChildren[i]->mName.localeAwareCompare( child->mName ) >= 0 )
break;
}
}
if ( refresh )
emit beginInsertItems( this, i, i );
mChildren.insert( i, child );
child->setParent( this );
if ( refresh )
emit endInsertItems();
}
void QgsDataItem::deleteChildItem( QgsDataItem * child )
{
QgsDebugMsgLevel( "mName = " + child->mName, 2 );
int i = mChildren.indexOf( child );
Q_ASSERT( i >= 0 );
emit beginRemoveItems( this, i, i );
mChildren.remove( i );
child->deleteLater();
emit endRemoveItems();
}
QgsDataItem * QgsDataItem::removeChildItem( QgsDataItem * child )
{
QgsDebugMsgLevel( "mName = " + child->mName, 2 );
int i = mChildren.indexOf( child );
Q_ASSERT( i >= 0 );
emit beginRemoveItems( this, i, i );
mChildren.remove( i );
emit endRemoveItems();
child->setParent( 0 );
return child;
}
int QgsDataItem::findItem( QVector<QgsDataItem*> items, QgsDataItem * item )
{
for ( int i = 0; i < items.size(); i++ )
{
Q_ASSERT_X( items[i], "findItem", QString( "item %1 is NULL" ).arg( i ).toAscii() );
QgsDebugMsgLevel( QString::number( i ) + " : " + items[i]->mPath + " x " + item->mPath, 2 );
if ( items[i]->equal( item ) )
return i;
}
return -1;
}
bool QgsDataItem::equal( const QgsDataItem *other )
{
if ( metaObject()->className() == other->metaObject()->className() &&
mPath == other->path() )
{
return true;
}
return false;
}
QgsDataItem::State QgsDataItem::state() const
{
// for backward compatibility (if subclass set mPopulated directly)
// TODO: remove in 3.0
if ( mPopulated )
return Populated;
return mState;
}
void QgsDataItem::setState( State state )
{
QgsDebugMsg( QString( "item %1 set state %2 -> %3" ).arg( path() ).arg( this->state() ).arg( state ) );
if ( state == mState )
return;
State oldState = mState;
if ( state == Populating ) // start loading
{
if ( !mPopulatingIcon )
{
// TODO: ensure that QgsAnimatedIcon is created on UI thread only
mPopulatingIcon = new QgsAnimatedIcon( QgsApplication::iconPath( "/mIconLoading.gif" ) );
}
mPopulatingIcon->connectFrameChanged( this, SLOT( emitDataChanged() ) );
}
else if ( mState == Populating && mPopulatingIcon ) // stop loading
{
mPopulatingIcon->disconnectFrameChanged( this, SLOT( emitDataChanged() ) );
}
mState = state;
// for backward compatibility (if subclass access mPopulated directly)
// TODO: remove in 3.0
mPopulated = state == Populated;
emit stateChanged( this, oldState );
}
// ---------------------------------------------------------------------
QgsLayerItem::QgsLayerItem( QgsDataItem* parent, QString name, QString path, QString uri, LayerType layerType, QString providerKey )
: QgsDataItem( Layer, parent, name, path )
, mProviderKey( providerKey )
, mUri( uri )
, mLayerType( layerType )
{
switch ( layerType )
{
case Point: mIconName = "/mIconPointLayer.svg"; break;
case Line: mIconName = "/mIconLineLayer.svg"; break;
case Polygon: mIconName = "/mIconPolygonLayer.svg"; break;
// TODO add a new icon for generic Vector layers
case Vector : mIconName = "/mIconPolygonLayer.svg"; break;
case TableLayer: mIconName = "/mIconTableLayer.png"; break;
case Raster: mIconName = "/mIconRaster.svg"; break;
default: mIconName = "/mIconLayer.png"; break;
}
}
QgsMapLayer::LayerType QgsLayerItem::mapLayerType()
{
if ( mLayerType == QgsLayerItem::Raster )
return QgsMapLayer::RasterLayer;
if ( mLayerType == QgsLayerItem::Plugin )
return QgsMapLayer::PluginLayer;
return QgsMapLayer::VectorLayer;
}
bool QgsLayerItem::equal( const QgsDataItem *other )
{
//QgsDebugMsg ( mPath + " x " + other->mPath );
if ( type() != other->type() )
{
return false;
}
//const QgsLayerItem *o = qobject_cast<const QgsLayerItem *> ( other );
const QgsLayerItem *o = dynamic_cast<const QgsLayerItem *>( other );
if ( !o )
return false;
return ( mPath == o->mPath && mName == o->mName && mUri == o->mUri && mProviderKey == o->mProviderKey );
}
// ---------------------------------------------------------------------
QgsDataCollectionItem::QgsDataCollectionItem( QgsDataItem* parent, QString name, QString path )
: QgsDataItem( Collection, parent, name, path )
{
mCapabilities = Fertile;
mIconName = "/mIconDbSchema.png";
}
QgsDataCollectionItem::~QgsDataCollectionItem()
{
QgsDebugMsgLevel( "mName = " + mName + " mPath = " + mPath, 2 );
// Do not delete children, children are deleted by QObject parent
#if 0
foreach ( QgsDataItem* i, mChildren )
{
QgsDebugMsgLevel( QString( "delete child = 0x%0" ).arg(( qlonglong )i, 8, 16, QLatin1Char( '0' ) ), 2 );
delete i;
}
#endif
}
//-----------------------------------------------------------------------
// QVector<QgsDataProvider*> QgsDirectoryItem::mProviders = QVector<QgsDataProvider*>();
QVector<QLibrary*> QgsDirectoryItem::mLibraries = QVector<QLibrary*>();
QgsDirectoryItem::QgsDirectoryItem( QgsDataItem* parent, QString name, QString path )
: QgsDataCollectionItem( parent, name, path )
, mDirPath( path )
, mFileSystemWatcher( 0 )
, mRefreshLater( false )
{
mType = Directory;
init();
}
QgsDirectoryItem::QgsDirectoryItem( QgsDataItem* parent, QString name, QString dirPath, QString path )
: QgsDataCollectionItem( parent, name, path )
, mDirPath( dirPath )
, mFileSystemWatcher( 0 )
, mRefreshLater( false )
{
mType = Directory;
init();
}
void QgsDirectoryItem::init()
{
}
QgsDirectoryItem::~QgsDirectoryItem()
{
}
QIcon QgsDirectoryItem::icon()
{
if ( state() == Populating )
return QgsDataItem::icon();
return iconDir();
}
QVector<QgsDataItem*> QgsDirectoryItem::createChildren()
{
QVector<QgsDataItem*> children;
QDir dir( mDirPath );
QSettings settings;
QStringList entries = dir.entryList( QDir::AllDirs | QDir::NoDotAndDotDot, QDir::Name | QDir::IgnoreCase );
foreach ( QString subdir, entries )
{
if ( mRefreshLater )
{
deleteLater( children );
return children;
}
QString subdirPath = dir.absoluteFilePath( subdir );
QgsDebugMsgLevel( QString( "creating subdir: %1" ).arg( subdirPath ), 2 );
QString path = mPath + "/" + subdir; // may differ from subdirPath
QgsDirectoryItem *item = new QgsDirectoryItem( this, subdir, subdirPath, path );
// propagate signals up to top
children.append( item );
}
QStringList fileEntries = dir.entryList( QDir::Dirs | QDir::NoDotAndDotDot | QDir::Files, QDir::Name );
foreach ( QString name, fileEntries )
{
if ( mRefreshLater )
{
deleteLater( children );
return children;
}
QString path = dir.absoluteFilePath( name );
QFileInfo fileInfo( path );
// vsizip support was added to GDAL/OGR 1.6 but GDAL_VERSION_NUM not available here
// so we assume it's available anyway
{
QgsDataItem * item = QgsZipItem::itemFromPath( this, path, name, mPath + "/" + name );
if ( item )
{
children.append( item );
continue;
}
}
foreach ( QgsDataItemProvider* provider, QgsDataItemProviderRegistry::instance()->providers() )
{
int capabilities = provider->capabilities();
if ( !(( fileInfo.isFile() && ( capabilities & QgsDataProvider::File ) ) ||
( fileInfo.isDir() && ( capabilities & QgsDataProvider::Dir ) ) ) )
{
continue;
}
QgsDataItem * item = provider->createDataItem( path, this );
if ( item )
{
children.append( item );
}
}
}
return children;
}
void QgsDirectoryItem::setState( State state )
{
QgsDebugMsg( "Entered" );
QgsDataCollectionItem::setState( state );
if ( state == Populated )
{
if ( !mFileSystemWatcher )
{
mFileSystemWatcher = new QFileSystemWatcher( this );
mFileSystemWatcher->addPath( mDirPath );
connect( mFileSystemWatcher, SIGNAL( directoryChanged( const QString & ) ), SLOT( directoryChanged() ) );
}
}
else if ( state == NotPopulated )
{
if ( mFileSystemWatcher )
{
delete mFileSystemWatcher;
mFileSystemWatcher = 0;
}
}
}
void QgsDirectoryItem::directoryChanged()
{
QgsDebugMsg( "Entered" );
if ( state() == Populating )
{
// schedule to refresh later, because refres() simply returns if Populating
mRefreshLater = true;
}
else
{
refresh();
}
}
void QgsDirectoryItem::childrenCreated()
{
QgsDebugMsg( QString( "mRefreshLater = %1" ).arg( mRefreshLater ) );
if ( mRefreshLater )
{
QgsDebugMsg( "directory changed during createChidren() -> refresh() again" );
mRefreshLater = false;
setState( Populated );
refresh();
}
else
{
QgsDataCollectionItem::childrenCreated();
}
}
bool QgsDirectoryItem::equal( const QgsDataItem *other )
{
//QgsDebugMsg ( mPath + " x " + other->mPath );
if ( type() != other->type() )
{
return false;
}
return ( path() == other->path() );
}
QWidget * QgsDirectoryItem::paramWidget()
{
return new QgsDirectoryParamWidget( mPath );
}
QgsDirectoryParamWidget::QgsDirectoryParamWidget( QString path, QWidget* parent )
: QTreeWidget( parent )
{
setRootIsDecorated( false );
// name, size, date, permissions, owner, group, type
setColumnCount( 7 );
QStringList labels;
labels << tr( "Name" ) << tr( "Size" ) << tr( "Date" ) << tr( "Permissions" ) << tr( "Owner" ) << tr( "Group" ) << tr( "Type" );
setHeaderLabels( labels );
QStyle* style = QApplication::style();
QIcon iconDirectory = QIcon( style->standardPixmap( QStyle::SP_DirClosedIcon ) );
QIcon iconFile = QIcon( style->standardPixmap( QStyle::SP_FileIcon ) );
QIcon iconDirLink = QIcon( style->standardPixmap( QStyle::SP_DirLinkIcon ) );
QIcon iconFileLink = QIcon( style->standardPixmap( QStyle::SP_FileLinkIcon ) );
QList<QTreeWidgetItem *> items;
QDir dir( path );
QStringList entries = dir.entryList( QDir::AllEntries | QDir::NoDotAndDotDot, QDir::Name | QDir::IgnoreCase );
foreach ( QString name, entries )
{
QFileInfo fi( dir.absoluteFilePath( name ) );
QStringList texts;
texts << name;
QString size;
if ( fi.size() > 1024 )
{
size = size.sprintf( "%.1f KiB", fi.size() / 1024.0 );
}
else if ( fi.size() > 1.048576e6 )
{
size = size.sprintf( "%.1f MiB", fi.size() / 1.048576e6 );
}
else
{
size = QString( "%1 B" ).arg( fi.size() );
}
texts << size;
texts << fi.lastModified().toString( Qt::SystemLocaleShortDate );
QString perm;
perm += fi.permission( QFile::ReadOwner ) ? 'r' : '-';
perm += fi.permission( QFile::WriteOwner ) ? 'w' : '-';
perm += fi.permission( QFile::ExeOwner ) ? 'x' : '-';
// QFile::ReadUser, QFile::WriteUser, QFile::ExeUser
perm += fi.permission( QFile::ReadGroup ) ? 'r' : '-';
perm += fi.permission( QFile::WriteGroup ) ? 'w' : '-';
perm += fi.permission( QFile::ExeGroup ) ? 'x' : '-';
perm += fi.permission( QFile::ReadOther ) ? 'r' : '-';
perm += fi.permission( QFile::WriteOther ) ? 'w' : '-';
perm += fi.permission( QFile::ExeOther ) ? 'x' : '-';
texts << perm;
texts << fi.owner();
texts << fi.group();
QString type;
QIcon icon;
if ( fi.isDir() && fi.isSymLink() )
{
type = tr( "folder" );
icon = iconDirLink;
}
else if ( fi.isDir() )
{
type = tr( "folder" );
icon = iconDirectory;
}
else if ( fi.isFile() && fi.isSymLink() )
{
type = tr( "file" );
icon = iconFileLink;
}
else if ( fi.isFile() )
{
type = tr( "file" );
icon = iconFile;
}
texts << type;
QTreeWidgetItem *item = new QTreeWidgetItem( texts );
item->setIcon( 0, icon );
items << item;
}
addTopLevelItems( items );
// hide columns that are not requested