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#include <QDebug>
#include "qdeclarativerewritedelegate.h"
#include "qprocessinfo.h"

QT_BEGIN_NAMESPACE_PROCESSMANAGER

/*!
  \qmlclass PmScriptRewrite QDeclarativeRewriteDelegate
  \brief The PmScriptRewrite class allows a factory to use a Javascript function for rewriting
  ProcessInfo objects.

  \qml
  PmManager {
      factories: [
          StandardProcessBackendFactory {
              rewriteDelegate: PmScriptRewrite {
                  script: {
                      var oldprog = model.program;
                      model.program = "gdb";
                      var args = model.arguments;
                      args.unshift(oldprog);
                      args.unshift("--");
                      model.arguments = args;
                  }
              }
          }
      ]
  }
  \endqml
*/

/*!
  \qmlproperty script PmScriptRewrite::script

  This property holds the script to run.  The ProcessInfo object will be passed
  in as a global "model" variable.
 */

/*!
  \class QDeclarativeRewriteDelegate
  \brief The QDeclarativeRewriteDelegate class is a lightweight wrapper around a RewriteDelegate.

  The QDeclarativeRewriteDelegate class rewrites ProcessInfo objects by
  passing them to a script object containing Javascript code.
 */

/*!
  Construct a QDeclarativeRewriteDelegate object with optional \a parent.
 */

QDeclarativeRewriteDelegate::QDeclarativeRewriteDelegate(QObject *parent)
    : QRewriteDelegate(parent)
    , m_modelContext(0)
{
}

/*!
  \internal
*/

void QDeclarativeRewriteDelegate::classBegin()
{
}

/*!
  \internal
*/

void QDeclarativeRewriteDelegate::componentComplete()
{
}

/*!
  Rewrite the \a info object by passing it to the stored Javascript.
  The \a info object is bound to the \c{model} property in the
  stored Javascript.
*/

void QDeclarativeRewriteDelegate::rewrite(QProcessInfo& info)
{
    if (!m_script.isEmpty()) {
        if (!m_modelContext)
            m_modelContext = new QQmlContext(QQmlEngine::contextForObject(this), this);
        m_modelContext->setContextProperty(QStringLiteral("model"), (QObject *) &info);

        QQmlExpression expr(m_script, m_modelContext);
        expr.evaluate();
    }
}

/*!
  Return a copy of the Javascript.
*/

QQmlScriptString QDeclarativeRewriteDelegate::script() const
{
    return m_script;
}

/*!
  Set the Javascript object to \a script.
*/

void QDeclarativeRewriteDelegate::setScript(const QQmlScriptString& script)
{
    m_script = script;
    emit scriptChanged();
}

/*!
  \fn void QDeclarativeRewriteDelegate::scriptChanged()
  This signal is emitted when the internal script object is changed.
*/

#include "moc_qdeclarativerewritedelegate.cpp"

QT_END_NAMESPACE_PROCESSMANAGER