/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

#include <hbdocumentloader.h>

#include <hbmainwindow.h>

#include <hbapplication.h>

#include <hbaction.h>

#include <qgraphicslayout.h>

#include <qvariant.h>

#include <qobject.h>

#include <qlist.h>

#include <hbmessagebox.h>

#include <hblabel.h>

#include <hbwidget.h>

#include <qstringlist.h>

#include <qsignalmapper.h>

#include <hblistwidget.h>

#include <hblistwidgetitem.h>

#include <hbmenu.h>

#include <hbtoolbar.h>

#include <hbdialog.h>

#include <hbprogressdialog.h>

#include <hbtextitem.h>

#include <hbindicator.h>

#include <qdebug.h>

#include "pimainview.h"

#include "piprofilerengine.h"

#include "notifications.h"

#include "pimainwindow.h"

const char *INVALIDCONFIGURATIONFILE = "Invalid configuration file";

const char *APPLICATIONNAME = "PI Profiler";

// actions that are found from xml

const char *ACTIONEXIT = "actionExit";

const char *ACTIONSTARTPROFILING = "actionStartProfiling";

const char *ACTIONSTARTTIMEDPROFILING = "actionStartTimedProfiling";

const char *ACTIONSETTINGS = "actionSettings";

const char *ACTIONABOUT = "actionAbout";

// UI components that are found from xml

const char *LISTWIDGETPLUGINS = "listPlugins";

const char *TEXTMANDATORYPLUGINS = "Mandatory plug-ins:";

const char *TEXTOPTIONALPLUGINS = "Optional plug-ins:";

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

PIMainView::PIMainView() :

    application(0), mMainWindow(0), mEngine(0), mPluginList(0), mContextMenu(0), mActionExit(0),

        mActionExitAndLeaveProfilingOn(0), mActionAbout(0), mActionStartTimedProfiling(0),

        mActionSettings(0), mActionStopProfiling(0), mListPlugins(0), mProfilingNote(0)

{

}

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

PIMainView::~PIMainView()

{

}

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

void PIMainView::init(PIMainWindow *mainWindow, HbApplication* app, HbDocumentLoader &loader,

    PIProfilerEngine *engine)

{

    application = app;

    mMainWindow = mainWindow;

    // Load items from xml file

    loadItemsFromResources(loader);

    // Set list widget items

    mListPlugins->setClampingStyle(HbScrollArea::BounceBackClamping);

    mListPlugins->setFrictionEnabled(true);

    // Create stop profiling action

    mActionStopProfiling = new HbAction("Stop Profiling", this);

    // Create exit and leave profiling on action

    mActionExitAndLeaveProfilingOn = new HbAction("Close UI\n(Continue profiling)", this);

    mEngine = engine;

    // Connect signals and slots

    this->connectSignalsAndSlots(app);

    // Create icons

    mIconDisabled = HbIcon(":/gfx/disabled.svg");

    mIconEnabled = HbIcon(":/gfx/enabled.svg");

    // update timed profiling text according to settings

    updateTimedProfilingText();

}

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

void PIMainView::connectSignalsAndSlots(HbApplication* app)

{

    // Menu items:

    connect(mActionExit, SIGNAL(triggered()), app, SLOT( quit() ));

    connect(mActionSettings, SIGNAL(triggered()), this, SLOT( openSettingsView() ));

    connect(mActionAbout, SIGNAL(triggered()), this, SLOT( showAboutPopup() ));

    connect(mActionStartProfiling, SIGNAL(triggered()), this, SLOT( startProfiling() ));

    connect(mActionStartTimedProfiling, SIGNAL(triggered()), this, SLOT( startTimedProfiling() ));

    // List widget actions

    connect(mListPlugins, SIGNAL(activated(HbListWidgetItem*)), this,

        SLOT(enableOrDisablePlugin(HbListWidgetItem*)));

    connect(mListPlugins, SIGNAL(longPressed(HbListWidgetItem*, QPointF)), this,

        SLOT(showContexMenu(HbListWidgetItem*, QPointF)));

    connect(

        mEngine,

        SIGNAL(profilingStatusChanged(ProfilerEngineStatus, const QString&, ProfilingMode, ProfilingOutput)),

        this,

        SLOT(profilingStatusChanged(ProfilerEngineStatus, const QString&, ProfilingMode, ProfilingOutput)));

    connect(mMainWindow, SIGNAL(returnedFromSettings()), this, SLOT( updateTimedProfilingText() ));

    connect(mActionExitAndLeaveProfilingOn, SIGNAL(triggered()), this,

        SLOT( exitAndLeaveProfilingOn() ));

    connect(mActionStopProfiling, SIGNAL(triggered()), this, SLOT( stopProfiling() ));

}

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

void PIMainView::loadItemsFromResources(HbDocumentLoader &loader)

{

    // ACTIONS:

    // Exit

    QObject *object = loader.findObject(ACTIONEXIT);

    Q_ASSERT_X((object != 0), APPLICATIONNAME, INVALIDCONFIGURATIONFILE);

    this->mActionExit = qobject_cast<HbAction *> (object);

    // About

    object = loader.findObject(ACTIONABOUT);

    Q_ASSERT_X((object != 0), APPLICATIONNAME, INVALIDCONFIGURATIONFILE);

    this->mActionAbout = qobject_cast<HbAction *> (object);

    // Settings

    object = loader.findObject(ACTIONSETTINGS);

    Q_ASSERT_X((object != 0), APPLICATIONNAME, INVALIDCONFIGURATIONFILE);

    this->mActionSettings = qobject_cast<HbAction *> (object);

    // Start profiling

    object = loader.findObject(ACTIONSTARTPROFILING);

    Q_ASSERT_X((object != 0), APPLICATIONNAME, INVALIDCONFIGURATIONFILE);

    this->mActionStartProfiling = qobject_cast<HbAction *> (object);

    // Start timed profiling

    object = loader.findObject(ACTIONSTARTTIMEDPROFILING);

    Q_ASSERT_X((object != 0), APPLICATIONNAME, INVALIDCONFIGURATIONFILE);

    this->mActionStartTimedProfiling = qobject_cast<HbAction *> (object);

    QGraphicsWidget *widget = loader.findWidget(LISTWIDGETPLUGINS);

    Q_ASSERT_X((widget != 0), "Launcher", "Invalid launcher.xml file");

    this->mListPlugins = qobject_cast<HbListWidget *> (widget);

}

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

void PIMainView::showAboutPopup()

{

            "Copyright © 2010 Nokia Corporation "

            "and/or its subsidiary(-ies). "

            "All rights reserved.");

}

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

void PIMainView::setPluginList(QList<PluginAttributes> *pluginList)

{

    this->mPluginList = pluginList;

    this->updatePlugInLists();

}

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

void PIMainView::openSettingsView()

{

    mMainWindow->activateSettingsView();

}

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

void PIMainView::updatePlugInLists()

{

    mListPlugins->clear();

    // Create Compulsory and Optional labels into list widget:

    HbListWidgetItem *compulsory = new HbListWidgetItem();

    compulsory->setText(TEXTMANDATORYPLUGINS);

    mListPlugins->addItem(compulsory);

    HbListWidgetItem *optional = new HbListWidgetItem();

    optional->setText(TEXTOPTIONALPLUGINS);

    mListPlugins->addItem(optional);

    HbIcon *icon;

    // Go thru pluginlist and add list item for each plug-in into list widget 

    for (int index = 0; index < mPluginList->size(); index++) {

        QString plugInName = mPluginList->at(index).mName;

        // get icon for item 

        if (mPluginList->at(index).mEnabled) {

            icon = &mIconEnabled;

        }

        else {

            icon = &mIconDisabled;

        }

        // Create list widget item

        // TODO ensure that this does not leak memory

        HbListWidgetItem *newItem = new HbListWidgetItem();

        newItem->setIcon(*icon);

        newItem->setText(plugInName);

        newItem->setData(mPluginList->at(index).mUid);

        // check if plug-in is compulsory or optional

        if (mPluginList->at(index).mIsHidden) {

            mListPlugins->insertItem(mListPlugins->row(optional), newItem);

        }

        else {

            mListPlugins->addItem(newItem);

        }

    }

}

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

void PIMainView::enableOrDisablePlugin(HbListWidgetItem *widget)

{

    // if widget is not found, set currently highlighted item as widget

    // (in that case this method is called from context menu)

    if (widget == 0) {

        widget = mListPlugins->currentItem();

    }

    // if this method is called from list widget's activated signal, do nothing

    // if context menu is open.

    else {

        if (mContextMenu != 0) {

            return;

        }

    }

    bool ok = false;

    int widgetUid = widget->data().toInt(&ok);

    if (!ok) {

        qWarning("PIProfiler: Unable to find plug-in uid");

        return;

    }

    // go thru plug-in array and find checked plug-in

    for (int index = 0; index < mPluginList->size(); index++) {

        if (mPluginList->at(index).mUid == widgetUid) {

            PluginAttributes pluginAttributes = mPluginList->at(index);

            // if plug-in is hidden it cannot be disabled

            if (pluginAttributes.mIsHidden) {

                return;

            }

            // change enable status and set icon correct

            if (pluginAttributes.mEnabled) {

                pluginAttributes.mEnabled = false;

                widget->setIcon(mIconDisabled);

            }

            else {

                pluginAttributes.mEnabled = true;

                widget->setIcon(mIconEnabled);

            }

            // save plug-in settings

            if (mEngine->savePluginSettings(pluginAttributes)) {

                mPluginList->replace(index, pluginAttributes);

            }

            else {

                // if saving operation failed, revert icon back

                if (pluginAttributes.mEnabled) {

                    widget->setIcon(mIconEnabled);

                }

                else {

                    pluginAttributes.mEnabled = true;

                    widget->setIcon(mIconDisabled);

                }

                Notifications::showErrorNote(

                    "Error occured while saving settings to Profiler engine.");

            }

            break;

        }

    }

}

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

void PIMainView::showContexMenu(HbListWidgetItem *widget, const QPointF &point)

{

    bool ok = false;

    int uid = widget->data().toInt(&ok);

    if (!ok) {

        return;

    }

    for (int index = 0; index < mPluginList->size(); index++) {

        if (mPluginList->at(index).mUid == uid) {

            // Create Context menu:

            mContextMenu = new HbMenu();

            mContextMenu->setPreferredPos(point, HbPopup::TopLeftCorner);

            mContextMenu->setDismissPolicy(HbPopup::TapOutside);

            mContextMenu->setAttribute(Qt::WA_DeleteOnClose);

            // Enable/disable plug-in

            if (!mPluginList->at(index).mIsHidden) {

                HbAction *enableAction;

                if (mPluginList->at(index).mEnabled) {

                    enableAction = mContextMenu->addAction(QString("Disable"));

                }

                else {

                    enableAction = mContextMenu->addAction(QString("Enable"));

                }

                connect(enableAction, SIGNAL(triggered()), this, SLOT( enableOrDisablePlugin() ));

            }

            //FIXME take these into use once expanding and collapsing data form groups works. 

            // Plug-in specific settings 

            /*if (mPluginList->at(index).mItemCount != 0 || mPluginList->at(index).mSampleRate != -1) {

             HbAction *pluginSettingsAction = mContextMenu->addAction(QString(

             "Plug-in settings"));

             connect(pluginSettingsAction, SIGNAL(triggered()), this,

             SLOT(openPluginSpecificSettings()));

             }*/

            // Plug in info

            HbAction *infoAction = mContextMenu->addAction(QString("Plug-in info"));

            connect(infoAction, SIGNAL(triggered()), this, SLOT( openSampleInfo() ));

            connect(mContextMenu, SIGNAL(aboutToClose()), this, SLOT( contextMenuClosed() ));

            mContextMenu->open(this, SLOT(contextMenuClosed()));

            break;

        }

    }

}

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

void PIMainView::openSampleInfo()

{

    // Show plug-in specific info

    bool ok = false;

    int uid = mListPlugins->currentItem()->data().toInt(&ok);

    if (!ok) {

        return;

    }

    Notifications::showInformationNote(this->getPluginAttributes(uid).mDescription);

}

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

PluginAttributes PIMainView::getPluginAttributes(int uid)

{

    // Get plug-in attributes from the plug-in list based on uid number

    for (int index = 0; index < mPluginList->size(); index++) {

        if (mPluginList->at(index).mUid == uid) {

            return mPluginList->at(index);

        }

    }

    return PluginAttributes();

}

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

void PIMainView::contextMenuClosed()

{

    mContextMenu = 0;

}

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

void PIMainView::startProfiling()

{

    showProfilingNote();

    if (!mEngine->startProfiling()) {

        Notifications::showErrorNote("Unable to start profiling");

        mProfilingNote->close();

        mProfilingNote = 0;

    }

}

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

void PIMainView::startTimedProfiling()

{

    showProfilingNote();

    if (!mEngine->startTimedProfiling()) {

        Notifications::showErrorNote("Unable to start profiling");

        mProfilingNote->close();

        mProfilingNote = 0;

    }

}

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

void PIMainView::stopProfiling()

{

    mProfilingNote = 0;

    mEngine->stopProfiling();

}

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

void PIMainView::profilingStatusChanged(ProfilerEngineStatus status, const QString &text,

    ProfilingMode profilingMode, ProfilingOutput outputMode)

{

    if (status == PI_FINISHED_SUCCEFULLY) {

        // Profiling finished successfully

        // close profiling note

        if (mProfilingNote != 0) {

            mProfilingNote->close();

            mProfilingNote = 0;

        }

        // Show info text

        Notifications::showInformationNote(text);

        return;

    }

    if (mProfilingNote == 0) {

        // if profiling note is not yet shown, create it

        showProfilingNote();

    }

    if (status == PI_ERROR) {

        // if errors occured, close profiling note and show error message

        if (mProfilingNote != 0) {

            mProfilingNote->close();

            mProfilingNote = 0;

        }

        Notifications::showErrorNote(text);

    }

    else if (status == PI_PROFILING) {

        // if profiling is on-going, update info text according to output:

        HbLabel *titleLabel = new HbLabel("Profiling...", mProfilingNote);

        titleLabel->setAlignment(Qt::AlignCenter);

        HbTextItem *textItem = new HbTextItem(text, mProfilingNote);

        textItem->setAlignment(Qt::AlignCenter);

        mProfilingNote->setHeadingWidget(titleLabel);

        mProfilingNote->setContentWidget(textItem);

    }

}

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

void PIMainView::showProfilingNote()

{

    // Create new dialog 

    mProfilingNote = new HbDialog();

    mProfilingNote->setAttribute(Qt::WA_DeleteOnClose);

    // Make it modal.

    mProfilingNote->setModal(true);

    // set dismiss policy

    mProfilingNote->setDismissPolicy(HbPopup::NoDismiss);

    mProfilingNote->setTimeout(0); //

    mProfilingNote->setBackgroundFaded(true);

    // create label and text item for popup

    HbTextItem *titleLabel = new HbTextItem("Profiling...", mProfilingNote);

    HbTextItem *label = new HbTextItem("Starting to profile", mProfilingNote);

    label->setAlignment(Qt::AlignCenter);

    titleLabel->setAlignment(Qt::AlignCenter);

    mProfilingNote->setHeadingWidget(titleLabel);

    mProfilingNote->setContentWidget(label);

    // set actions

    mProfilingNote->setPrimaryAction(mActionStopProfiling);

    mProfilingNote->setSecondaryAction(mActionExitAndLeaveProfilingOn);