/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*     Zhiqiang Yang <zhiqiang.yang@nokia.com>

*     Steven Yao <steven.yao@nokia.com>

*     Yong Zhang <yong.5.zhang@nokia.com>

* 

* Description:

*     The source file of the widget to browse files

*

*/

#include "fmfilebrowsewidget.h"

#include "fmviewdetailsdialog.h"

#include "fmviewmanager.h"

#include "fmfiledialog.h"

#include "fmdlgutils.h"

#include <QFile>

#include <QDirModel>

#include <QSizePolicy>

#include <QGraphicsLinearLayout>

#include <hbmenu.h>

#include <hblistview.h>

#include <hbtreeview.h>

#include <hbabstractviewitem.h>

#include <hbaction.h>

#include <hbsearchpanel.h>

#include <hblabel.h>

FmFileBrowseWidget::FmFileBrowseWidget( HbWidget *parent, FmFileBrowseWidget::Style style )

    : HbWidget( parent ),

      mTreeView( 0 ),

      mListView( 0 ),

      mLayout( 0 ),

      mModel( 0 ),

      mSelectable( false ), 

      mStyle( NoStyle ), 

      mFileBrowseStyle( style ),

      mCurrentItem( 0 ),

      mOperationService( 0 ),

      mSearchPanel( 0 ),

      mListLongPressed( false )

{

    initFileModel();

    initListView();

    initTreeView();

    initSearchPanel();

    initEmptyTipsLabel();

    initLayout();

    mOperationService = FmViewManager::viewManager()->operationService();

    setStyle( style );

}

FmFileBrowseWidget::~FmFileBrowseWidget()

{

    //take the model out from view and delete it.

    //so that the model could be destroy earlier

    //since there is a thread running in background

    //if the model destroy later, the thread might not quit properly.

    if( mStyle == ListStyle || mStyle == TreeStyle ) {

        QFileInfo oldFileInfo = mModel->fileInfo( mListView->rootIndex() );

        if( oldFileInfo.exists() ) {

            FmViewManager *viewManager = FmViewManager::viewManager();

            if( viewManager ) {

                viewManager->removeWatchPath( oldFileInfo.absoluteFilePath() );

            }   

        }

    }

    mTreeView->setModel( 0 );

    mListView->setModel( 0 );

    delete mModel;

}

QFileInfo FmFileBrowseWidget::currentPath() const

{

    QModelIndex index = mListView->rootIndex();

    if( !index.isValid() ) {

        return QFileInfo();

    }

    if (mStyle == ListStyle) {

        return mModel->fileInfo( mListView->rootIndex() );

    } else if ( mStyle == TreeStyle ) {

        return QFileInfo();

    } else {

        return QFileInfo();

    }

}

QList<QFileInfo> FmFileBrowseWidget::checkedItems() const

{

    QList<QFileInfo> infos;

    QItemSelection selection;

    if (mStyle == ListStyle) {

        selection = mListView->selectionModel()->selection();

    }

    QModelIndexList indexes = selection.indexes();

    for (int i = 0; i < indexes.size(); ++i) {

        infos.append( mModel->fileInfo( indexes.at(i) ) );

    }

    return infos;

}

void FmFileBrowseWidget::setRootPath( const QString &pathName )

{

    QString logString = "FmFileBrowseWidget::setRootPath(" + pathName + ')';

    FmLogger::log( logString );

    if( checkPathAndSetStyle( pathName ) ) {

        mListView->setModel(0);

        mTreeView->setModel(0);

        delete mModel;

        mModel = new QDirModel(this);

        mListView->setModel(mModel);

        mTreeView->setModel(mModel);

        mListView->setRootIndex( mModel->index( pathName ) );

        mTreeView->setRootIndex( mModel->index( pathName ) );

        FmViewManager::viewManager()->addWatchPath( pathName );

    }

    mCurrentDrive = pathName.left( 3 );

}

void FmFileBrowseWidget::setStyle( FmFileBrowseWidget::Style style )

{

    if ( mStyle == style ) {

        return;

    }

    if ( mStyle == ListStyle ) {

        mLayout->removeItem( mListView );

        mListView->hide();

    } else if ( mStyle == TreeStyle ) {

        mLayout->removeItem( mTreeView );

        mTreeView->hide();

    } else if( mStyle == LabelStyle ){

        mLayout->removeItem( mEmptyTipLabel );

        mEmptyTipLabel->hide();

    }

    if ( style == ListStyle ) {

        mLayout->addItem( mListView );

        mListView->show();

        mFileBrowseStyle = ListStyle;

    } else if ( style == TreeStyle ) {

        mLayout->addItem( mTreeView );

        mTreeView->show();

        mFileBrowseStyle = TreeStyle;

    } else if ( style == LabelStyle ){

        mLayout->addItem( mEmptyTipLabel );

        mEmptyTipLabel->show();

    }

    mStyle = style;

}

bool FmFileBrowseWidget::selectable() const

{

    return mSelectable;

}

void FmFileBrowseWidget::setSelectable( bool enable )

{

    if (mSelectable != enable) {

        mSelectable = enable;

        if (mStyle == ListStyle) {

            mListView->setSelectionMode( mSelectable ? HbAbstractItemView::MultiSelection 

                                                    : HbAbstractItemView::NoSelection );

        }

    }

}

void FmFileBrowseWidget::clearSelection()

{

    QItemSelectionModel *selectionModel = 0;

    if (mStyle == ListStyle) {

        selectionModel = mListView->selectionModel();

    } else if (mStyle == TreeStyle) {

        selectionModel = mTreeView->selectionModel();

    }

    if( selectionModel ){

        selectionModel->clear();

    }

}

bool FmFileBrowseWidget::rename( const QString &oldName, const QString &newName )

{

    return QFile::rename( oldName, newName );

}

bool FmFileBrowseWidget::cdUp()

{

    if (mStyle == ListStyle) {

        QModelIndex index = mListView->rootIndex().parent();

        mModel->refresh(index);

        if (index.isValid()) {

            changeRootIndex( index );

            return true;

        }

    }

    return false;

}

void FmFileBrowseWidget::on_list_activated( const QModelIndex &index )

{

    mActivatedModelIndex = index;

    emit listActivated();

}

void FmFileBrowseWidget::on_listActivated()

{

    FmLogger::log("FmFileBrowseWidget::on_listActivated start");

    if( mListLongPressed ) {

        FmLogger::log("FmFileBrowseWidget::on_list_activated end because longPressed");

        return;

    }

    if (!mSelectable) {

        if (mModel->isDir(mActivatedModelIndex) ) {

            FmLogger::log("FmFileBrowseWidget::on_list_activated changeRootIndex>>");

            changeRootIndex( mActivatedModelIndex );

            FmLogger::log("FmFileBrowseWidget::on_list_activated changeRootIndex<<");

        } else {

            QString filePath( mModel->filePath( mActivatedModelIndex ) );

            QFileInfo fileInfo( filePath );

            if ( fileInfo.isFile() ) {

                mOperationService->syncLaunchFileOpen( filePath );

            }

        }

    }

    FmLogger::log("FmFileBrowseWidget::on_listActivated end");

}

void FmFileBrowseWidget::on_tree_activated( const QModelIndex &index )

{

    if (!mSelectable) {

        mTreeView->setExpanded( index, !mTreeView->isExpanded( index ) );

    }

}

void FmFileBrowseWidget::on_list_longPressed( HbAbstractViewItem *item, const QPointF &coords )

{

    mListLongPressed = true;

    HbMenu *contextMenu = new HbMenu();

    mCurrentItem = item;

    HbAction *viewAction = new HbAction();

    viewAction->setObjectName( "viewAction" );

    viewAction->setText( hbTrId( "txt_fmgr_menu_view_details_file" ) );

    contextMenu->addAction( viewAction );

    connect( viewAction, SIGNAL( triggered() ),

    //copy

    HbAction *copyAction = new HbAction();

    copyAction->setObjectName( "copyAction" );

    copyAction->setText( hbTrId( "txt_fmgr_menu_copy" ) );

    contextMenu->addAction( copyAction );

    connect( copyAction, SIGNAL( triggered() ),

    QString filePath( mModel->filePath( item->modelIndex() ) );

    QString formatFilePath( FmUtils::formatPath( filePath ) );

    QFileInfo fileInfo( filePath );

    if( ( fileInfo.isFile() ) || ( fileInfo.isDir() && !( FmUtils::isDefaultFolder( formatFilePath ) ) ) ){

        //Move

        HbAction *moveAction = new HbAction();

        moveAction->setObjectName( "moveAction" );

        moveAction->setText( hbTrId( "txt_fmgr_menu_move" ) );

        contextMenu->addAction( moveAction );

        connect( moveAction, SIGNAL( triggered() ),

        //Delete

        HbAction *deleteAction = new HbAction();

        deleteAction->setObjectName( "deleteAction" );

        deleteAction->setText( hbTrId( "txt_fmgr_menu_delete" ) );

        contextMenu->addAction( deleteAction );

        connect( deleteAction, SIGNAL( triggered() ),

        //rename

        HbAction *renameAction = new HbAction();

        renameAction->setObjectName( "renameAction" );

        renameAction->setText( hbTrId( "txt_fmgr_menu_rename" ) );

        contextMenu->addAction( renameAction );

        connect( renameAction, SIGNAL( triggered() ),

    }

//    if( fileInfo.isFile() ){

//        HbAction *sendAction = new HbAction();

//        sendAction->setObjectName( "sendAction" );

//        sendAction->setText( hbTrId( "txt_fmgr_menu_send" ) );

//        contextMenu->addAction( sendAction );

//        

//        connect( sendAction, SIGNAL( triggered() ),

//        this, SLOT( on_sendAction_triggered() ) );

//    }

    contextMenu->setPreferredPos( coords );

    contextMenu->open();

}

void FmFileBrowseWidget::on_list_pressed( const QModelIndex &  index )

{

    mListLongPressed = false;

}

void FmFileBrowseWidget::on_tree_longPressed( HbAbstractViewItem *item, const QPointF &coords )

{

    Q_UNUSED( item );

    Q_UNUSED( coords );

    /*

    HbMenu *contextMenu = new HbMenu( this );

    if ( isFolder( item->modelIndex() ) ) {

        contextMenu->addAction("View details");

        contextMenu->addAction("Copy");

        contextMenu->addAction("Rename");

        contextMenu->addAction("Delete");

    } else {

        contextMenu->addAction("View details");

        contextMenu->addAction("Open");

        contextMenu->addAction("Copy");

        contextMenu->addAction("Rename");

        contextMenu->addAction("Delete");

    }

    contextMenu->exec( coords );

    */

}

void FmFileBrowseWidget::initListView()

{

    mListView = new HbListView();

    mListView->setObjectName( "list" );

    mListView->setModel( mModel );

    connect( mListView, SIGNAL( activated( const QModelIndex& ) ),

        this, SLOT( on_list_activated( const QModelIndex& ) ) );

    connect( this, SIGNAL( listActivated() ),

        this, SLOT( on_listActivated() ), Qt::QueuedConnection );

    connect( mListView, SIGNAL( longPressed( HbAbstractViewItem *, const QPointF & ) ),

        this, SLOT( on_list_longPressed( HbAbstractViewItem *, const QPointF & ) ) );

}

void FmFileBrowseWidget::initTreeView()

{

    mTreeView = new HbTreeView();

    mTreeView->setObjectName( "tree" );

    mTreeView->setModel( mModel );

    connect( mTreeView, SIGNAL( activated( const QModelIndex& ) ),

        this, SLOT( on_tree_activated( const QModelIndex& ) ) );

    connect( mTreeView, SIGNAL( longPressed( HbAbstractViewItem *, const QPointF & ) ),

        this, SLOT( on_tree_longPressed( HbAbstractViewItem *, const QPointF & ) ) );

}

void FmFileBrowseWidget::initFileModel()

{

    mModel = new QDirModel( this );

    mModel->setReadOnly( false );

    disconnect( mModel, SIGNAL( rowsInserted( const QModelIndex &, int, int ) ), 0 ,0 );

}

void FmFileBrowseWidget::initLayout()

{

    mLayout = new QGraphicsLinearLayout( this );

    mLayout->setOrientation( Qt::Vertical );

    setLayout( mLayout );

}

void FmFileBrowseWidget::initSearchPanel()

{

    mSearchPanel = new HbSearchPanel( this );

    mSearchPanel->setObjectName( "searchPanel" );

    mSearchPanel->setSearchOptionsEnabled( true );

    mSearchPanel->setProgressive( false );

    mSearchPanel->hide();

    connect( mSearchPanel, SIGNAL( searchOptionsClicked() ),

    connect( mSearchPanel, SIGNAL( criteriaChanged( const QString & ) ),

        this, SLOT( on_searchPanel_criteriaChanged( const QString & ) ) );

    connect( mSearchPanel, SIGNAL( exitClicked() ),

        this, SLOT( on_searchPanel_exitClicked() ) );

}

void FmFileBrowseWidget::initEmptyTipsLabel()

{

    mEmptyTipLabel = new HbLabel( this );

    mEmptyTipLabel->setObjectName( "searchPanel" );

    mEmptyTipLabel->hide();

}

void FmFileBrowseWidget::changeRootIndex( const QModelIndex &index )

{

    QFileInfo oldFileInfo = mModel->fileInfo( mListView->rootIndex() );

    FmViewManager::viewManager()->removeWatchPath( oldFileInfo.absoluteFilePath() );

    mModel->refresh(index);

    if ( mStyle == ListStyle ) {

        mListView->setRootIndex( index );

    } else if ( mStyle == TreeStyle ) {

        mTreeView->setRootIndex( index );

    }

    QFileInfo fileInfo = mModel->fileInfo( mListView->rootIndex() );

    QString string = fileInfo.absoluteFilePath();

    emit currentPathChanged( string );

    FmViewManager::viewManager()->addWatchPath( string );

}

bool FmFileBrowseWidget::isDriver(const QModelIndex &index) const

{

    QString path = mModel->filePath(index);

    return path.right(1) == ":";

}

bool FmFileBrowseWidget::isFolder(const QModelIndex &index) const

{

    if( isDriver( index ) )    {

        return false;

    }

    return mModel->isDir(index);

}

void FmFileBrowseWidget::setModelFilter( QDir::Filters filters ) 

{

    mModel->setFilter( filters );

}

void FmFileBrowseWidget::refreshModel( const QString& path )

{

    FmLogger::log( "FmFileBrowseWidget::refreshModel start" );

    QString currPath( currentPath().absoluteFilePath() );

    QString refreshPath( path );

    if( !currPath.isEmpty() ) {

        if( refreshPath.isEmpty() ) {

            refreshPath = currPath;

        }

        if(  !FmUtils::isPathEqual( refreshPath, currPath ) ) {

            // no need refresh other path

            return;

        }

        if( checkPathAndSetStyle( refreshPath ) ) {               

            mModel->refresh( mModel->index( refreshPath ) );

        } else {

            FmViewManager *viewManager = FmViewManager::viewManager();

            if( viewManager ) {

                viewManager->removeWatchPath( currentPath().absoluteFilePath() );

            } 

        }

    } else {

        // current path is empty, so change root path to Drive root.

        refreshPath = mCurrentDrive;

        setRootPath( refreshPath );

        emit setTitle( FmUtils::fillDriveVolume( mCurrentDrive, true ) );

    }

    FmLogger::log( "FmFileBrowseWidget::refreshModel end" );

}

bool FmFileBrowseWidget::checkPathAndSetStyle( const QString& path )

{

    if( !FmUtils::isPathAccessabel( path ) ){

        QString driveName = FmUtils::getDriveNameFromPath( path );

        FmDriverInfo::DriveState state = FmUtils::queryDriverInfo( driveName ).driveState();

        if( state & FmDriverInfo::EDriveLocked ) {

            mEmptyTipLabel->setPlainText( hbTrId( "Drive is locked" ) );       

        } else if( state & FmDriverInfo::EDriveNotPresent ) {

            mEmptyTipLabel->setPlainText( hbTrId( "Drive is not present" ) );

        } else if( state & FmDriverInfo::EDriveCorrupted ) {

            mEmptyTipLabel->setPlainText( hbTrId( "Drive is Corrupted" ) );