cxLayoutInteractor.cpp

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
All rights reserved.

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   may be used to endorse or promote products derived from this software 
   without specific prior written permission.

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#include "cxLayoutInteractor.h"
#include "cxLayoutEditorWidget.h"
#include <QMenu>
#include <QMessageBox>
#include <QDialogButtonBox>
#include <QMetaMethod>
#include "boost/bind.hpp"
#include "libQtSignalAdapters/Qt2Func.h"
#include "libQtSignalAdapters/ConnectionFactories.h"
#include <QVBoxLayout>
#include "cxLayoutRepository.h"
#include "cxViewService.h"

namespace cx
{

LayoutInteractor::LayoutInteractor(ViewServicePtr viewService, QObject* parent) :
        QObject(parent),
        mViewService(viewService)
{
        mSecondaryLayoutActionGroup = NULL;
        mLayoutActionGroup = NULL;
        this->createActions();
        connect(viewService.get(), SIGNAL(activeLayoutChanged()), this, SLOT(layoutChangedSlot()));
}

LayoutRepositoryPtr LayoutInteractor::getRepo()
{
        return mViewService->getLayoutRepository();
}

void LayoutInteractor::createActions()
{
        mNewLayoutAction = new QAction(tr("New Layout"), this);
        mNewLayoutAction->setToolTip("Create a new Custom Layout");
        connect(mNewLayoutAction, SIGNAL(triggered()), this, SLOT(newCustomLayoutSlot()));
        mEditLayoutAction = new QAction(tr("Edit Layout"), this);
        mEditLayoutAction->setToolTip("Edit the current Custom Layout");
        connect(mEditLayoutAction, SIGNAL(triggered()), this, SLOT(editCustomLayoutSlot()));
        mDeleteLayoutAction = new QAction(tr("Delete Layout"), this);
        mDeleteLayoutAction->setToolTip("Delete the current Custom Layout");
        connect(mDeleteLayoutAction, SIGNAL(triggered()), this, SLOT(deleteCustomLayoutSlot()));
}

void LayoutInteractor::connectToMenu(QMenu* menu)
{
        mMenu = menu;

        mMenu->addAction(mNewLayoutAction);
        mMenu->addAction(mEditLayoutAction);
        mMenu->addAction(mDeleteLayoutAction);

        mSecondaryLayoutMenu = new QMenu("Secondary Layout", mMenu);
        mMenu->addMenu(mSecondaryLayoutMenu);

        mMenu->addSeparator();

        this->layoutChangedSlot();
}


void LayoutInteractor::newCustomLayoutSlot()
{
        LayoutData data = this->executeLayoutEditorDialog("New Custom Layout", true);
        if (data.getUid().isEmpty())
                return;
        this->getRepo()->insert(data);
        mViewService->setActiveLayout(data.getUid());
}

void LayoutInteractor::editCustomLayoutSlot()
{
        LayoutData data = this->executeLayoutEditorDialog("Edit Current Layout", false);
        if (data.getUid().isEmpty())
                return;
        this->getRepo()->insert(data);
}

void LayoutInteractor::deleteCustomLayoutSlot()
{
        if (QMessageBox::question(NULL, "Delete current layout", "Do you really want to delete the current layout?",
                QMessageBox::Cancel | QMessageBox::Ok) != QMessageBox::Ok)
                return;
        this->getRepo()->erase(mViewService->getActiveLayout());
        mViewService->setActiveLayout(this->getRepo()->getAvailable().front()); // revert to existing state
}

void LayoutInteractor::layoutChangedSlot()
{
        if (!mMenu)
                return;
        if (!this->getRepo())
                return;
        // reset list of available layouts

        this->deepDeleteActionGroup(mLayoutActionGroup);
        mLayoutActionGroup = this->createLayoutActionGroup(0);
        mMenu->addActions(mLayoutActionGroup->actions());

        this->deepDeleteActionGroup(mSecondaryLayoutActionGroup);
        mSecondaryLayoutActionGroup = this->createLayoutActionGroup(1);
        mSecondaryLayoutMenu->addActions(mSecondaryLayoutActionGroup->actions());

        bool editable = this->getRepo()->isCustom(mViewService->getActiveLayout());
        mEditLayoutAction->setEnabled(editable);
        mDeleteLayoutAction->setEnabled(editable);
}

void LayoutInteractor::deepDeleteActionGroup(QActionGroup* actionGroup)
{
        //Make sure all actions in the group are deleted - possibly removes a few memory leaks
        if (actionGroup)
        {
                QList<QAction*> actionList = actionGroup->actions();
                for (int i = 0; i < actionList.size(); i++)
                        delete actionList.at(i);
        }

        delete actionGroup;
}

LayoutData LayoutInteractor::executeLayoutEditorDialog(QString title, bool createNew)
{
        boost::shared_ptr<QDialog> dialog(new QDialog(NULL, Qt::Dialog));
        dialog->setWindowTitle(title);
        QVBoxLayout* layout = new QVBoxLayout(dialog.get());
        layout->setMargin(0);

        LayoutEditorWidget* editor = new LayoutEditorWidget(mViewService, dialog.get());

        LayoutData data = this->getRepo()->get(mViewService->getActiveLayout());

        if (createNew)
        {
                data.resetUid(this->getRepo()->generateUid());
        }
        editor->setLayoutData(data);
        layout->addWidget(editor);

        QDialogButtonBox* buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
        connect(buttonBox, SIGNAL(accepted()), dialog.get(), SLOT(accept()));
        connect(buttonBox, SIGNAL(rejected()), dialog.get(), SLOT(reject()));
        layout->addWidget(buttonBox);

        if (!dialog->exec())
                return LayoutData();

        return editor->getLayoutData();
}

QActionGroup* LayoutInteractor::createLayoutActionGroup(int widgetIndex)
{
        QActionGroup* retval = new QActionGroup(this);
        retval->setExclusive(true);
        if (!this->getRepo())
                return retval;


        // add default layouts
        std::vector<QString> layouts = this->getRepo()->getAvailable();
        int defaultLayouts = 0;
        for (unsigned i = 0; i < layouts.size(); ++i)
        {
                if (!this->getRepo()->isCustom(layouts[i]))
                {
                        this->addLayoutAction(layouts[i], retval, widgetIndex);
                        defaultLayouts++;
                }
        }

        // add separator
        QAction* sep = new QAction(retval);
    sep->setSeparator(true);
        //retval->addAction(sep);

        if (defaultLayouts != layouts.size())
        {
                QAction* action = new QAction("Custom", retval);
                action->setEnabled(false);
        }

        // add custom layouts
        for (unsigned i = 0; i < layouts.size(); ++i)
        {
                if (this->getRepo()->isCustom(layouts[i]))
                        this->addLayoutAction(layouts[i], retval, widgetIndex);
        }

        // set checked status
        QString type = mViewService->getActiveLayout(widgetIndex);
        QList<QAction*> actions = retval->actions();
        for (int i = 0; i < actions.size(); ++i)
        {
                if (actions[i]->data().toString() == type)
                        actions[i]->setChecked(true);
        }

        return retval;
}

QAction* LayoutInteractor::addLayoutAction(QString layout, QActionGroup* group, int widgetIndex)
{
        LayoutData data = this->getRepo()->get(layout);
        if (data.isEmpty())
        {
                QAction* sep = new QAction(group);
        sep->setSeparator(true);
        }
        QAction* action = new QAction(data.getName(), group);
        action->setEnabled(!data.isEmpty());
        action->setCheckable(!data.isEmpty());
        action->setData(QVariant(layout));

//      std::cout << "** " << layout << "-" << widgetIndex << std::endl;
        QtSignalAdapters::connect0<void()>(
                action,
                SIGNAL(triggered()),
                boost::bind(&LayoutInteractor::setActiveLayout, this, layout, widgetIndex));

        return action;
}

void LayoutInteractor::setActiveLayout(QString layout, int widgetIndex)
{
//      std::cout << "*slot* " << layout << "-" << widgetIndex << std::endl;
        mViewService->setActiveLayout(layout, widgetIndex);
}

} // namespace cx