cxToolListWidget.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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modification, are permitted provided that the following conditions are met:

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   this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, 
   this list of conditions and the following disclaimer in the documentation 
   and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors 
   may be used to endorse or promote products derived from this software 
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
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=========================================================================*/

#include "cxToolListWidget.h"

#include <QListWidgetItem>
#include <QDir>
#include <QDropEvent>
#include <QMimeData>
#include <QAction>
#include <QMenu>
#include <QDrag>
#include "cxEnumConverter.h"
#include "cxLogger.h"
#include "cxTrackerConfiguration.h"
#include "cxLegacySingletons.h"
#include "cxTrackingService.h"

namespace cx
{
//---------------------------------------------------------------------------------------------------------------------

ToolListWidget::ToolListWidget(QWidget* parent) :
                QListWidget(parent)
{
        connect(this, SIGNAL(itemSelectionChanged()), this, SLOT(selectionChangedSlot()));

        this->setSelectionBehavior(QAbstractItemView::SelectItems);
        this->setSelectionMode(QAbstractItemView::SingleSelection);
}

ToolListWidget::~ToolListWidget()
{
}

void ToolListWidget::populate(QStringList toolsAbsoluteFilePath)
{
        this->clear();

        foreach(QString tool, toolsAbsoluteFilePath)
        {
                this->addTool(tool);
        }
        emit listSizeChanged();
}

void ToolListWidget::addTool(QString absoluteFilePath)
{
        TrackerConfigurationPtr config = trackingService()->getConfiguration();
        QString name = config->getTool(absoluteFilePath).mName;

//      QFile file(absoluteFilePath);
//      QFileInfo info(file);
//      QListWidgetItem* item = new QListWidgetItem(/*QIcon, */info.dir().dirName());
        QListWidgetItem* item = new QListWidgetItem(name);
        item->setData(Qt::ToolTipRole, absoluteFilePath);
        item->setData(Qt::UserRole, absoluteFilePath);
        this->addItem(item);
        emit listSizeChanged();
}

void ToolListWidget::selectionChangedSlot()
{
        QListWidgetItem* selectedItem = this->currentItem();
        this->toolSelectedSlot(selectedItem);
}

void ToolListWidget::toolSelectedSlot(QListWidgetItem* item)
{
        if (!item)
                return;

        QString absoluteFilePath = item->data(Qt::UserRole).toString();
        emit toolSelected(absoluteFilePath);
}

//---------------------------------------------------------------------------------------------------------------------

FilteringToolListWidget::FilteringToolListWidget(QWidget* parent) :
                ToolListWidget(parent)
{
        this->setDragDropMode(QAbstractItemView::DragOnly);
        this->setDragEnabled(true);
}

FilteringToolListWidget::~FilteringToolListWidget()
{
}

QSize FilteringToolListWidget::minimumSizeHint() const
{
        QFontMetrics metric(this->font());
        int height = metric.lineSpacing() * 15; // approx 15 lines of text
        return QSize(300,height); // the height here is important: the default is 150, which is too little
}

void FilteringToolListWidget::mousePressEvent(QMouseEvent *event)
{
        if (event->button() == Qt::LeftButton)
                startPos = event->pos();
        QListWidget::mousePressEvent(event);
}

void FilteringToolListWidget::mouseMoveEvent(QMouseEvent *event)
{
        if (event->buttons() & Qt::LeftButton)
        {
                int distance = (event->pos() - startPos).manhattanLength();
                if (distance >= 10)
                        this->startDrag();
        }
}

void FilteringToolListWidget::startDrag()
{
        QListWidgetItem *item = currentItem();
        if (item)
        {
                QMimeData *mimeData = new QMimeData;
                mimeData->setText(item->data(Qt::ToolTipRole).toString());
                QDrag *drag = new QDrag(this);
                drag->setMimeData(mimeData);

                drag->start(Qt::MoveAction);
        }
}

void FilteringToolListWidget::filterSlot(QStringList applicationsFilter, QStringList trackingsystemsFilter)
{
        TrackerConfigurationPtr config = trackingService()->getConfiguration();
        QStringList filteredTools = config->getToolsGivenFilter(applicationsFilter,
                                                                                                                  trackingsystemsFilter);
//      filteredTools.sort(); // no good: we would like to sort on name, but the list is full paths
        this->populate(filteredTools);
}

//---------------------------------------------------------------------------------------------------------------------

ConfigToolListWidget::ConfigToolListWidget(QWidget* parent) :
                ToolListWidget(parent)
{
        this->setContextMenuPolicy(Qt::CustomContextMenu);

        this->viewport()->setAcceptDrops(true);
        this->setDropIndicatorShown(true);
        this->setDefaultDropAction(Qt::CopyAction);
        this->setDragDropMode(QAbstractItemView::DropOnly);

connect(this, SIGNAL(customContextMenuRequested(const QPoint &)), this, SLOT(contextMenuSlot(const QPoint &)));
}

ConfigToolListWidget::~ConfigToolListWidget()
{
}

void ConfigToolListWidget::dragEnterEvent(QDragEnterEvent *event)
{
        QStringList all = this->getTools();
        if (all.contains(event->mimeData()->text()))
                event->ignore();
        else
                event->accept();
}

void ConfigToolListWidget::dragMoveEvent(QDragMoveEvent *event)
{
        event->setDropAction(Qt::MoveAction);
//  event->accept();
        QStringList all = this->getTools();
        if (all.contains(event->mimeData()->text()))
                event->ignore();
        else
                event->accept();
}

void ConfigToolListWidget::dropEvent(QDropEvent *event)
{
//  std:: cout << "received dropEvent: " << event->mimeData()->text() << std::endl;
        this->addTool(event->mimeData()->text());
//  addItem(event->mimeData()->text());
        event->setDropAction(Qt::MoveAction);
        event->accept();
        emit userChangedList();
        emit listSizeChanged();
}

QStringList ConfigToolListWidget::getTools()
{
        QStringList retval;

        for (int i = 0; i < this->count(); ++i)
        {
                QListWidgetItem* item = this->item(i);
                retval << item->data(Qt::ToolTipRole).toString();
        }

        return retval;
}

void ConfigToolListWidget::configSlot(QStringList toolsAbsoluteFilePath)
{
        this->populate(toolsAbsoluteFilePath);
}

void ConfigToolListWidget::filterSlot(QStringList trackingsystemFilter)
{
        TrackerConfigurationPtr config = trackingService()->getConfiguration();

        for (int i = 0; i < this->count(); ++i)
        {
                QListWidgetItem* item = this->item(i);
                QString absoluteFilePath = item->data(Qt::ToolTipRole).toString();

                QString toolTrackingSystem = config->getTool(absoluteFilePath).mTrackingSystem;

                QBrush brush = item->foreground();
                if (!trackingsystemFilter.contains(toolTrackingSystem, Qt::CaseInsensitive) || !config->verifyTool(absoluteFilePath))
                        brush.setColor(Qt::red);
                else
                        brush.setColor(Qt::black);

                item->setForeground(brush);
        }
}

void ConfigToolListWidget::deleteSlot()
{
        if (!mItemToDelete)
        {
                reportDebug("Found no item to delete...");
                return;
        }
        this->deleteItemSlot(mItemToDelete);
}

void ConfigToolListWidget::deleteItemSlot(QListWidgetItem* item)
{
        delete item;
        emit userChangedList();
        emit listSizeChanged();
}

void ConfigToolListWidget::contextMenuSlot(const QPoint& point)
{
        QWidget* sender = dynamic_cast<QWidget*>(this->sender());
        QPoint pointGlobal = sender->mapToGlobal(point);
        QMenu contextMenu(sender);

        QAction* action = new QAction("Remove", &contextMenu);

        QListWidgetItem* item = this->itemAt(point);
        if (!item)
        {
                reportDebug("Found no item to delete...");
                return;
        }
        mItemToDelete = item;

        connect(action, SIGNAL(triggered()), this, SLOT(deleteSlot()));
        contextMenu.addAction(action);

        contextMenu.exec(pointGlobal);
}

//---------------------------------------------------------------------------------------------------------------------
}//namespace cx