#include "cachewebview.h"
#include <QtGui>
CacheWebView::CacheWebView(QWidget *parent) :
    QWebView(parent)
{
    cache = 0;
    isCacheFile = false;
    m_isloading = false;
    setAcceptDrops(false);
    QObject::connect(this,SIGNAL(linkClicked(QUrl)),this,SLOT(onLinkClicked(QUrl)));

}

void CacheWebView::setPageUrl(QString pageUrl, QString cachePath)
{
    if(pageUrl.isEmpty())
        return;
    this->pageUrl = pageUrl;
    this->cachePath = cachePath;
    QUrl url(pageUrl);
    connect(this,SIGNAL(loadFinished(bool)),this,SLOT(onWebViewFinished(bool)));
    this->page()->setLinkDelegationPolicy(QWebPage::DelegateExternalLinks);
    this->load(url);
}


CacheWebView::~CacheWebView()
{
    if(cache)
    {
        cache->abort();
        cache->wait();
        delete cache;
        cache = 0;
    }
    qDebug()<<QDateTime::currentDateTime().toString("yyyy-MM-dd HH:mm:ss")\
           <<"CacheWebView Destroyed.";
}

void CacheWebView::onLinkClicked(QUrl url)
{
    QDesktopServices::openUrl(url);
}

void CacheWebView::onWebViewFinished(bool ok)
{
    m_isloading = false;
    disconnect(this,SIGNAL(loadFinished(bool)),this,SLOT(onWebViewFinished(bool)));
    if(!isCacheFile)
    {
        if(ok)
        {
            if(!cache)
            {
                cache = new CacheWebPage(this->pageUrl,QCoreApplication::applicationDirPath()+"/../cache/");
            }
            cache->start();
        }
        else
        {
            isCacheFile = true;
            displayCacheFile();
        }
    }
}

void CacheWebView::displayCacheFile()
{

    QUrl url(this->pageUrl);
    QString md5;
    QByteArray ba;
    ba = QCryptographicHash::hash ( this->pageUrl.toAscii(), QCryptographicHash::Md5 );
    md5.append(ba.toHex());
    QString cacheFile = QCoreApplication::applicationDirPath()+"/../cache/" + md5 + url.path();
    if(QFile::exists(cacheFile))
    {
        this->load(QUrl::fromUserInput(cacheFile));
    }
}