/*

* Copyright (c) 2010 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:

*

* Description: 

*

*/

#include "SampleSearch.h"

#include "searchhandler.h"

#include <cpixdocument.h>

#include <xqservicerequest.h>

SampleSearch::SampleSearch(QWidget */*parent*/)

{

    iSearchHandler = new CSearchHandler();

    noOfItemsPerPage = 15;

    iCurrentPageNum =0;

    noOfPages =0;

    asyncSearch = false;

    //QDesktopWidget* desktopWidget = QApplication::desktop();

    QRect clientRect(0,0,360,640);// = desktopWidget->availableGeometry();

    setGeometry(clientRect);

    rootLayout = new QVBoxLayout();

    rowLayout = new QHBoxLayout();

    lbCaption = new QLabel("Search");

    //lbCaption->setText(tr("Search"));

    rowLayout->addWidget(lbCaption);

    txtSearch = new QLineEdit();

    rowLayout->addWidget(txtSearch);

    rootLayout->addLayout(rowLayout);

    rowButtonLayout = new QHBoxLayout();

    btnSearch = new QPushButton();

    btnSearch->setText(tr("Search"));

    rowButtonLayout->addWidget(btnSearch);

    btnSearchAsync = new  QPushButton();

    btnSearchAsync->setText(tr("Search ASync"));

    rowButtonLayout->addWidget(btnSearchAsync);

    rootLayout->addLayout(rowButtonLayout);

    searchResultLayout = new QHBoxLayout();

    iSearchResultLabel = new QLabel("Search Result Count:");

    searchResultLayout->addWidget(iSearchResultLabel);

    txtSearchResultCount = new QLineEdit();

    txtSearchResultCount->setText("0");

    searchResultLayout->addWidget(txtSearchResultCount);

    rootLayout->addLayout(searchResultLayout);

    iPageInfoLabel = new QLabel();

    iPageInfoLabel->setText("No results to display");

    rootLayout->addWidget(iPageInfoLabel);

    layoutForNavButton = new QHBoxLayout();

    btnPrev = new QPushButton();

    btnPrev->setText(tr("Prev"));

    layoutForNavButton->addWidget(btnPrev);

    connect(btnPrev, SIGNAL(clicked()),this, SLOT(displayPrevPage()));

    rootLayout->addLayout(layoutForNavButton);

    btnPrev->setEnabled(true);

    btnNext = new QPushButton();

    btnNext->setText(tr("Next"));

    layoutForNavButton->addWidget(btnNext);

    connect(btnNext, SIGNAL(clicked()),this, SLOT(displayNextPage()));

    btnNext->setEnabled(true);

    dataTable = new QTableWidget();

    dataTable->setColumnCount(3);

    QStringList headings;

    headings << tr("Class")

             << tr("Doc Id")

             << tr("Excerpt");

    dataTable->setHorizontalHeaderLabels(headings);

    rootLayout->addWidget(dataTable);    

    setLayout(rootLayout);

    setWindowTitle(tr("Search"));

    connect(btnSearch, SIGNAL(clicked()),this, SLOT(doSearch()));

    connect(btnSearchAsync, SIGNAL(clicked()),this, SLOT(doSearchAsync()));

    connect(iSearchHandler, SIGNAL(handleSearchResult(int,int)),this, SLOT(onSearchComplete(int,int)));

    connect(iSearchHandler, SIGNAL(handleAsyncSearchResult(int,int)),this, SLOT(onAsyncSearchComplete(int,int)));

    connect(iSearchHandler, SIGNAL(handleDocument(int,CpixDocument*)),this, SLOT(onGetDocumentComplete(int,CpixDocument*)));

}

SampleSearch::~SampleSearch()

{

    delete dataTable;

    delete btnSearch;

    delete txtSearch;  

    delete btnPrev;

    delete btnNext;

    delete rowLayout;

    delete lbCaption;

    delete iPageInfoLabel;

    delete iSearchResultLabel;

    delete txtSearchResultCount;    

    delete layoutForNavButton;

    delete searchResultLayout;

    delete rowButtonLayout;

    delete rootLayout;

    delete iSearchHandler;

}

void SampleSearch::searchCompleteHelper(int aError, int aResultCount)

    {

    txtSearchResultCount->setText(QString::number(aResultCount));

    iSearchResultsCount = aResultCount;

    noOfPages = (int)iSearchResultsCount/noOfItemsPerPage;

    if((iSearchResultsCount%noOfItemsPerPage) >0)

        {

        noOfPages++;

        }

    }

void SampleSearch::onAsyncSearchComplete(int aError, int aResultCount)

    {

    clearSearchResults();

    searchCompleteHelper( aError, aResultCount );

    setSearchResultsHeader();

    currentRow = 0;

    nextDocumentIndex = 0;

    iSearchHandler->getDocumentAsyncAtIndex( nextDocumentIndex++ );

    }

void SampleSearch::onGetDocumentComplete(int aError, CpixDocument* aDoc)

    {

    if( aDoc == NULL ) return;

    addDocumentToResultsPage( aDoc, currentRow++ );

    if( currentRow < noOfItemsPerPage ) 

        iSearchHandler->getDocumentAsyncAtIndex( nextDocumentIndex++ );

    }

void SampleSearch::onSearchComplete(int aError, int aResultCount)

    {

    searchCompleteHelper( aError, aResultCount );

    createSearchResultTableAndAddContents();

    }

void SampleSearch::doSearch()

    {   

    clearSearchResults();

    asyncSearch = false;

    iSearchResultsCount=0;

    iCurrentPageNum =0;

    btnPrev->setEnabled(false);        

    if(iSearchHandler)

        {

        iSearchHandler->cancelLastSearch();

        iSearchHandler->search(txtSearch->text());

        }

    }

void SampleSearch::doSearchAsync()

    {

    clearSearchResults();

    asyncSearch = true;

    iSearchResultsCount=0;

    iCurrentPageNum =0;

    btnPrev->setEnabled(false);        

    if(iSearchHandler)

        {

        iSearchHandler->cancelLastSearch();

        iSearchHandler->searchAsync( txtSearch->text() );

        }

    }

void SampleSearch::clearSearchResults()

    {    

    //Very Very Dirty hack!!!

    rootLayout->removeWidget(dataTable);

    int noOfRows = dataTable->rowCount();

    for(int i=0; i<noOfRows;i++)

        {

        dataTable->removeRow(i);

        }

    delete dataTable;

    dataTable = new QTableWidget();

    dataTable->setColumnCount(3);

    QStringList headings;

    headings << tr("Class")

             << tr("Doc Id")

             << tr("Excerpt");

    dataTable->setHorizontalHeaderLabels(headings);

    rootLayout->addWidget(dataTable);

    docInfo.clear(); //does this leak objects?

    }

void SampleSearch::displayNextPage()

    {    

    if(iCurrentPageNum <noOfPages)

        {

        iCurrentPageNum++;

        }

    if(iCurrentPageNum==noOfPages-1)

        {

        btnNext->setEnabled(false);

        btnPrev->setEnabled(true);

        }

    else

        {

        btnNext->setEnabled(true);

        btnPrev->setEnabled(true);

        }

    if( !asyncSearch )

        createSearchResultTableAndAddContents();

    else

        {

        currentRow = 0;

        clearSearchResults();

        setSearchResultsHeader();

        iSearchHandler->getDocumentAsyncAtIndex( nextDocumentIndex++ );

        }

    }

void SampleSearch::displayPrevPage()

    {    

    if(iCurrentPageNum >0)

        {

        iCurrentPageNum--;

        }

    if(iCurrentPageNum==0)

        {

        btnPrev->setEnabled(false);

        btnNext->setEnabled(true);

        }

    else

        {

        btnPrev->setEnabled(true);

        btnNext->setEnabled(true);

        }

    if( !asyncSearch )

        createSearchResultTableAndAddContents();

    else

        {

        currentRow = 0;

        nextDocumentIndex = iCurrentPageNum*noOfItemsPerPage;

        clearSearchResults();

        setSearchResultsHeader();

        iSearchHandler->getDocumentAsyncAtIndex( nextDocumentIndex++ );

        }

    }

int SampleSearch::getStartIndexForPage()

    {

    return iCurrentPageNum*noOfItemsPerPage;

    }

void SampleSearch::setSearchResultsHeader()

    {

    QString strText;

    strText.append("Displaying results for Page (");

    strText.append(QString::number(iCurrentPageNum+1));

    strText.append(" of ");

    strText.append(QString::number(noOfPages));

    strText.append(")");

    iPageInfoLabel->setText(strText);

    }

void SampleSearch::createSearchResultTableAndAddContents()

    {

    clearSearchResults();

    setSearchResultsHeader();

    int startIndex = getStartIndexForPage();

    int endIndex = startIndex + noOfItemsPerPage;

    if(endIndex >iSearchResultsCount )

        {

        endIndex = iSearchResultsCount;

        }

    int rowCount=0;

    for(int i =startIndex;i<endIndex;i++)

        {

        if(rowCount<noOfItemsPerPage)

            {

            CpixDocument* aSearchDoc = iSearchHandler->getDocumentAtIndex(i);

            addDocumentToResultsPage( aSearchDoc, rowCount );

            rowCount++;

            }

        }

    }

//This class is first needed in the function below

class DocLaunchInfo{

public:

    DocLaunchInfo(QString aType, QString aDocId)

    :type(aType), docId(aDocId)

    {}

public:

    QString type;

    QString docId;

};

void SampleSearch::addDocumentToResultsPage( CpixDocument* aSearchDoc, int rowCount )

    {

    QTableWidgetItem *appClassCol = new QTableWidgetItem("Col1");

    appClassCol->setFlags(Qt::ItemIsEnabled);

    QTableWidgetItem *docuidCol = new QTableWidgetItem("Col2");    

    docuidCol->setFlags(Qt::ItemIsEnabled);

    QTableWidgetItem *excerptCol = new QTableWidgetItem("Col3");

    excerptCol->setFlags(Qt::ItemIsEnabled);

    dataTable->insertRow(rowCount);

    connect( dataTable, SIGNAL( cellClicked(int,int) ), this, SLOT( launchDoc(int,int) ) );

    dataTable->setItem(rowCount,0,appClassCol);

    dataTable->setItem(rowCount,1,docuidCol);

    dataTable->setItem(rowCount,2,excerptCol);

    if(appClassCol)

        {

        appClassCol->setText( aSearchDoc->baseAppClass() );

        }

    if(docuidCol)

        {

        docuidCol->setText( aSearchDoc->docId() );

        }

    if(excerptCol)

        {

        excerptCol->setText( aSearchDoc->excerpt() );

        }

    docInfo.push_back( new DocLaunchInfo( aSearchDoc->baseAppClass(), aSearchDoc->docId() ) );

    }

void SampleSearch::doLaunchDoc(DocLaunchInfo& info)

    {

    //Instead of having these traps all over the place, we'll have it just here.

    QT_TRAP_THROWING(/* Call all the symbian APIs here */);

    if( info.type == "root calendar" ){

        *snd << info.docId.toInt();

        snd->send();

        }

    else mBox.show();

    }

void SampleSearch::launchDoc(int row,int /*col*/)

    {

    doLaunchDoc( *docInfo[row] );

    }