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#include "debugqtmemorywindow.h"

#include "debug/dvmemory.h"
#include "debug/debugvw.h"
#include "debug/debugcon.h"
#include "debug/debugcpu.h"


MemoryWindow::MemoryWindow(running_machine* machine, QWidget* parent) : 
    WindowQt(machine, parent)
{
    QPoint parentPos = parent->pos();
    setGeometry(parentPos.x()+100, parentPos.y()+100, 800, 400);
    setWindowTitle("Debug: Memory View");

    //
    // The main frame and its input and log widgets
    //
    QFrame* mainWindowFrame = new QFrame(this);

    // The top frame & groupbox that contains the input widgets
    QFrame* topSubFrame = new QFrame(mainWindowFrame);

    // The input edit
    m_inputEdit = new QLineEdit(topSubFrame);
    connect(m_inputEdit, SIGNAL(returnPressed()), this, SLOT(expressionSubmitted()));

    // The memory space combo box
    m_memoryComboBox = new QComboBox(topSubFrame);
    m_memoryComboBox->setMinimumWidth(300);
    connect(m_memoryComboBox, SIGNAL(currentIndexChanged(int)), this, SLOT(memoryRegionChanged(int)));

    // The main memory window
    m_memTable = new DebuggerView(DVT_MEMORY,
                                  m_machine,
                                  this);

    // Populate the combo box
    populateComboBox();


    // Layout
    QHBoxLayout* subLayout = new QHBoxLayout(topSubFrame);
    subLayout->addWidget(m_inputEdit);
    subLayout->addWidget(m_memoryComboBox);
    subLayout->setSpacing(3);
    subLayout->setContentsMargins(2,2,2,2);

    QVBoxLayout* vLayout = new QVBoxLayout(mainWindowFrame);
    vLayout->setSpacing(3);
    vLayout->setContentsMargins(2,2,2,2);
    vLayout->addWidget(topSubFrame);
    vLayout->addWidget(m_memTable);

    setCentralWidget(mainWindowFrame);

    //
    // Menu bars
    //
    // Create a byte-chunk group
    QActionGroup* chunkGroup = new QActionGroup(this);
    QAction* chunkActOne  = new QAction("1-byte chunks", this);
    QAction* chunkActTwo  = new QAction("2-byte chunks", this);
    QAction* chunkActFour = new QAction("4-byte chunks", this);
    chunkActOne->setCheckable(true);
    chunkActTwo->setCheckable(true);
    chunkActFour->setCheckable(true);
    chunkActOne->setActionGroup(chunkGroup);
    chunkActTwo->setActionGroup(chunkGroup);
    chunkActFour->setActionGroup(chunkGroup);
    chunkActOne->setShortcut(QKeySequence("Ctrl+1"));
    chunkActTwo->setShortcut(QKeySequence("Ctrl+2"));
    chunkActFour->setShortcut(QKeySequence("Ctrl+4"));
    chunkActOne->setChecked(true);
    connect(chunkGroup, SIGNAL(triggered(QAction*)), this, SLOT(chunkChanged(QAction*)));

    // Create a address display group
    QActionGroup* addressGroup = new QActionGroup(this);
    QAction* addressActLogical = new QAction("Logical Addresses", this);
    QAction* addressActPhysical = new QAction("Physical Addresses", this);
    addressActLogical->setCheckable(true);
    addressActPhysical->setCheckable(true);
    addressActLogical->setActionGroup(addressGroup);
    addressActPhysical->setActionGroup(addressGroup);
    addressActLogical->setShortcut(QKeySequence("Ctrl+G"));
    addressActPhysical->setShortcut(QKeySequence("Ctrl+Y"));
    addressActLogical->setChecked(true);
    connect(addressGroup, SIGNAL(triggered(QAction*)), this, SLOT(addressChanged(QAction*)));

    // Create a reverse view radio
    QAction* reverseAct = new QAction("Reverse View", this);
    reverseAct->setCheckable(true);
    reverseAct->setShortcut(QKeySequence("Ctrl+R"));
    connect(reverseAct, SIGNAL(toggled(bool)), this, SLOT(reverseChanged(bool)));

    // Create increase and decrease bytes-per-line actions
    QAction* increaseBplAct = new QAction("Increase Bytes Per Line", this);
    QAction* decreaseBplAct = new QAction("Decrease Bytes Per Line", this);
    increaseBplAct->setShortcut(QKeySequence("Ctrl+P"));
    decreaseBplAct->setShortcut(QKeySequence("Ctrl+O"));
    connect(increaseBplAct, SIGNAL(triggered(bool)), this, SLOT(increaseBytesPerLine(bool)));
    connect(decreaseBplAct, SIGNAL(triggered(bool)), this, SLOT(decreaseBytesPerLine(bool)));

    // Assemble the options menu
    QMenu* optionsMenu = menuBar()->addMenu("&Options");
    optionsMenu->addActions(chunkGroup->actions());
    optionsMenu->addSeparator();
    optionsMenu->addActions(addressGroup->actions());
    optionsMenu->addSeparator();
    optionsMenu->addAction(reverseAct);
    optionsMenu->addSeparator();
    optionsMenu->addAction(increaseBplAct);
    optionsMenu->addAction(decreaseBplAct);
}


void MemoryWindow::memoryRegionChanged(int index)
{
    m_memTable->view()->set_source(*m_memTable->view()->source_list().by_index(index));
    m_memTable->viewport()->update();
}


void MemoryWindow::expressionSubmitted()
{
    const QString expression = m_inputEdit->text();
    downcast<debug_view_memory*>(m_memTable->view())->set_expression(expression.toLocal8Bit().data());

    // Make the cursor pop
    m_memTable->view()->set_cursor_visible(true);

    // Check where the cursor is and adjust the scroll accordingly
    debug_view_xy cursorPosition = m_memTable->view()->cursor_position();
    // TODO: check if the region is already visible?
    m_memTable->verticalScrollBar()->setValue(cursorPosition.y);

    m_memTable->update();
    m_memTable->viewport()->update();
}


void MemoryWindow::chunkChanged(QAction* changedTo)
{
    debug_view_memory* memView = downcast<debug_view_memory*>(m_memTable->view());
    if (changedTo->text() == "1-byte chunks")
    {
        memView->set_bytes_per_chunk(1);
    }
    else if (changedTo->text() == "2-byte chunks")
    {
        memView->set_bytes_per_chunk(2);
    }
    else if (changedTo->text() == "4-byte chunks")
    {
        memView->set_bytes_per_chunk(4);
    }
    m_memTable->viewport()->update();
}


void MemoryWindow::addressChanged(QAction* changedTo)
{
    debug_view_memory* memView = downcast<debug_view_memory*>(m_memTable->view());
    if (changedTo->text() == "Logical Addresses")
    {
        memView->set_physical(false);
    }
    else if (changedTo->text() == "Physical Addresses")
    {
        memView->set_physical(true);
    }
    m_memTable->viewport()->update();
}


void MemoryWindow::reverseChanged(bool changedTo)
{
    debug_view_memory* memView = downcast<debug_view_memory*>(m_memTable->view());
    memView->set_reverse(changedTo);
    m_memTable->viewport()->update();
}


void MemoryWindow::increaseBytesPerLine(bool changedTo)
{
    debug_view_memory* memView = downcast<debug_view_memory*>(m_memTable->view());
    memView->set_chunks_per_row(memView->chunks_per_row() + 1);
    m_memTable->viewport()->update();
}


void MemoryWindow::decreaseBytesPerLine(bool checked)
{
    debug_view_memory* memView = downcast<debug_view_memory*>(m_memTable->view());
    memView->set_chunks_per_row(memView->chunks_per_row() - 1);
    m_memTable->viewport()->update();
}


void MemoryWindow::populateComboBox()
{
    if (m_memTable == NULL)
        return;

    m_memoryComboBox->clear();
    for (const debug_view_source* source = m_memTable->view()->source_list().head(); 
         source != NULL; 
         source = source->next())
    {
        m_memoryComboBox->addItem(source->name());
    }

    // TODO: Set to the proper memory view
    //const debug_view_source *source = mem->views[0]->view->source_list().match_device(curcpu);
    //gtk_combo_box_set_active(zone_w, mem->views[0]->view->source_list().index(*source));
    //mem->views[0]->view->set_source(*source);
}