/*

* 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 "nmuiheaders.h"

static const char *NMUI_MESSAGE_SEARCH_VIEW_XML = ":/docml/nmmessagesearchlistview.docml";

static const char *NMUI_MESSAGE_SEARCH_VIEW = "NmMessageSearchView";

static const char *NMUI_MESSAGE_SEARCH_MESSAGE_TREE_LIST= "MessageTreeList";

static const char *NMUI_MESSAGE_SEARCH_PANEL = "SearchPanel";

static const char *NMUI_MESSAGE_SEARCH_NO_MESSAGES = "MessageNoMessages";

static const QString NmSearchListViewProgressButton("progressbutton");

static const QString NmSearchListViewLineEdit("lineedit");

static const QString NmSearchListViewSpinnerAnimation("qtg_anim_mono_loading");

static const QString NmSearchListViewSpinnerImage("qtg_anim_mono_loading_1");

/*!

    \class NmMessageSearchListView

    \brief The view for searching messages.

*/

/*!

    Class constructor.

*/

NmMessageSearchListView::NmMessageSearchListView(

    NmApplication &application,

    NmUiStartParam* startParam,

    NmUiEngine &uiEngine,

    NmMessageListModel &msgListModel,

    HbDocumentLoader *documentLoader,

    QGraphicsItem *parent)

: NmBaseView(startParam, application, parent),

  mApplication(application),

  mUiEngine(uiEngine),

  mMsgListModel(msgListModel),

  mDocumentLoader(documentLoader),

  mItemContextMenu(NULL),

  mMessageList(NULL),

  mNoMessagesLabel(NULL),

  mSearchPanel(NULL),

  mLongPressedItem(NULL),

  mProgressButton(NULL),

  mLineEdit(NULL),

  mViewReady(false),

  mSearchInProgress(false),

  mSpinnerIcon(NULL),

  mAnimationAddedToManger(false),

  mSelectTextAfterOrientationChange(false),

  mVkbHost(NULL)

{

    NM_FUNCTION;

    loadViewLayout();

    initTreeView();

    // Add spinner animation axml to animation manager.

    HbIconAnimationManager *animationManager = HbIconAnimationManager::global();

    if (animationManager) {

        mAnimationAddedToManger =

            animationManager->addDefinitionFile(NmSearchListViewSpinnerAnimation);

    }

    HbMainWindow *mainWindow = mApplication.mainWindow();

    connect(mainWindow, SIGNAL(aboutToChangeOrientation()),

            this, SLOT(orientationAboutToChange()));

    connect(mainWindow, SIGNAL(orientationChanged(Qt::Orientation)),

            this, SLOT(orientationChanged()));

    mVkbHost = new HbShrinkingVkbHost(this);

    connect(mVkbHost, SIGNAL(keypadOpened()), this, SLOT(vkbOpened()));

    connect(mVkbHost, SIGNAL(keypadClosed()), this, SLOT(vkbClosed()));

}

/*!

    Class destructor.

*/

NmMessageSearchListView::~NmMessageSearchListView()

{

    NM_FUNCTION;

    delete mSpinnerIcon;

    delete mDocumentLoader;

    mWidgetList.clear();

    if (mItemContextMenu){

        mItemContextMenu->clearActions();

    }

    delete mItemContextMenu;

    delete mVkbHost;

}

/*!

    From NmBaseView.

    Returns the view ID.

    \return The view ID.

*/

NmUiViewId NmMessageSearchListView::nmailViewId() const

{

    NM_FUNCTION;

    return NmUiViewMessageSearchList;

}

/*!

    From NmBaseView.

    Makes necessary activities before view can exit.

*/

void NmMessageSearchListView::aboutToExitView()

{

    NM_FUNCTION;

    if (mSearchInProgress) {

       // Search is in progress - do cancel.

       mUiEngine.cancelSearch(mStartParam->mailboxId());

       mSearchInProgress = false;

    }

}

/*!

    From NmBaseView.

    Does the lazy loading after the view layout has been loaded.

*/

void NmMessageSearchListView::viewReady()

{

    NM_FUNCTION;

    if (!mViewReady){

        // Set the mailbox name to the title pane.

        setViewTitle();

        // Refresh the list.

        QMetaObject::invokeMethod(this, "refreshList", Qt::QueuedConnection);

        // Undim search field.

        setSearchInputMode(NmNormalMode);

        // Open VKB

        QMetaObject::invokeMethod(this, "sendSoftwareInputPanelRequest", Qt::QueuedConnection);

        mViewReady = true;

    }

}

/*!

    From NmMenuObserver.

    Handles action commands which are usually given by the user by selecting

    menu items.

    \param actionResponse The command details.

*/

void NmMessageSearchListView::handleActionCommand(NmActionResponse &actionResponse)

{

    NM_FUNCTION;

    // Handle options menu commands here.

    if (actionResponse.menuType() == NmActionOptionsMenu) {

        switch (actionResponse.responseCommand()) {

            case NmActionResponseCommandUpdateMailboxName: {

                setViewTitle();

                break;

            }

            case NmActionResponseCommandMailboxDeleted: {

                mApplication.prepareForPopView();

                break;

            }

            default: {

                break;

            }

        }

    }

    // Handle context menu commands here.

    if (actionResponse.menuType() == NmActionContextMenu) {

        if (mLongPressedItem){

            // Hide VKB

            vkbClosed();

            sendSoftwareInputPanelRequest(QEvent::CloseSoftwareInputPanel);

            NmUiStartParam *startParam = new NmUiStartParam(NmUiViewMessageViewer,

                mStartParam->mailboxId(), mLongPressedItem->envelope().folderId(),

                mLongPressedItem->envelope().messageId());

            mApplication.enterNmUiView(startParam);

            mLongPressedItem = NULL;

       }

    }

}

/*!

    From NmBaseView.

    Loads the view layout from the XML file.

*/

void NmMessageSearchListView::loadViewLayout()

{

    NM_FUNCTION;

    // Use the document loader to load the view layout.

    bool ok(false);

    setObjectName(QString(NMUI_MESSAGE_SEARCH_VIEW));

    QObjectList objectList;

    objectList.append(this);

    // Pass the view to the document loader. Instead of creating a new view, the

    // document loader uses this view when the docml file is parsed.

    if (mDocumentLoader) {

        mDocumentLoader->setObjectTree(objectList);

        mWidgetList = mDocumentLoader->load(NMUI_MESSAGE_SEARCH_VIEW_XML, &ok);

    }

    if (ok) {

        // Load the search panel

        mSearchPanel = qobject_cast<HbSearchPanel *>(

            mDocumentLoader->findWidget(NMUI_MESSAGE_SEARCH_PANEL));

        if (mSearchPanel) {

            mSearchPanel->setProgressive(false);

            mSearchPanel->setCancelEnabled(true);

            foreach(QGraphicsItem *obj, mSearchPanel->childItems()) {

                QGraphicsWidget *const widget = static_cast<QGraphicsWidget *>(obj);

                if (widget) {

                    QString objectName(widget->objectName());

                    if (objectName == NmSearchListViewProgressButton) {

                        mProgressButton = qobject_cast<HbPushButton *>(widget);

                        mProgressButton->setIcon(HbIcon("qtg_mono_search"));

                        mProgressButton->setEnabled(false);

                    }

                    else if(objectName == NmSearchListViewLineEdit) {

                        mLineEdit = qobject_cast<HbLineEdit *>(widget);

                        mLineEdit->setInputMethodHints(Qt::ImhNoPredictiveText);

                        connect(mLineEdit, SIGNAL(textChanged(const QString &)),

                                this, SLOT(textChanged(const QString &)));

                    }

                }

            }

            connect(mSearchPanel, SIGNAL(criteriaChanged(const QString &)),

                    this, SLOT(toggleSearch()));

            connect(mSearchPanel, SIGNAL(exitClicked()),

                    this, SLOT(exitClicked()), Qt::QueuedConnection);

        }

        // Get the message list widget.

        mMessageList = qobject_cast<HbTreeView *>(

            mDocumentLoader->findWidget(NMUI_MESSAGE_SEARCH_MESSAGE_TREE_LIST));

        if (mMessageList) {

            NM_COMMENT("NmMessageSearchListView: message list widget loaded");

            // Set the item prototype.

            mMessageList->setItemPrototype(new NmMessageListViewItem());

            // Set the list widget properties.

            mMessageList->setItemRecycling(true);

            mMessageList->contentWidget()->setProperty("indentation", 0);

            mMessageList->setScrollDirections(Qt::Vertical);

            mMessageList->setClampingStyle(HbScrollArea::BounceBackClamping);

            mMessageList->setFrictionEnabled(true);

            mMessageList->setItemPixmapCacheEnabled(true);

            // We want the search results to appear one by one.

            mMessageList->setEnabledAnimations(HbAbstractItemView::Appear &

                HbAbstractItemView::Expand);

        }

        // Load the no messages label.

        mNoMessagesLabel = qobject_cast<HbLabel *>(

            mDocumentLoader->findWidget(NMUI_MESSAGE_SEARCH_NO_MESSAGES));

        if (mNoMessagesLabel) {

            NMLOG("NmMessageSearchListView: No messages label loaded.");

            mNoMessagesLabel->setMaximumHeight(0);

        }

    }

    else {

        NM_ERROR(1, "NmMessageSearchListView: failed to load widgets from XML");

    }

}

/*!

    Initializes the tree view.

*/

void NmMessageSearchListView::initTreeView()

{

    NM_FUNCTION;

    // Get the mailbox widget pointer and set the parameters.

    if (mMessageList) {

        connect(mMessageList, SIGNAL(activated(const QModelIndex &)),

                this, SLOT(itemActivated(const QModelIndex &)));

        connect(mMessageList, SIGNAL(longPressed(HbAbstractViewItem*, QPointF)),

                this, SLOT(showItemContextMenu(HbAbstractViewItem*, QPointF)));

        mMessageList->setFocus();

        mItemContextMenu = new HbMenu();

    }

    // Clear the previous content if any.

    mMsgListModel.clear();

}

/*!

    Sets the title according to the name of the current mailbox.

*/

void NmMessageSearchListView::setViewTitle()

{

    NM_FUNCTION;

    if (mStartParam){

        NmMailboxMetaData *meta = mUiEngine.mailboxById(mStartParam->mailboxId());

        if (meta){

            setTitle(meta->name());

        }

    }

}

/*!

    Toggles the visiblity between the message list widget and the "no messages"

    label.

    \param visible If true, will display the "no messages" label. If false,

                   will display the message list widget.

*/

void NmMessageSearchListView::noMessagesLabelVisibility(bool visible)

{

    NM_FUNCTION;

    if (visible) {

        // Hide the message list widget and display the "no messages" label.

        if (mMessageList) {

            mMessageList->setMaximumHeight(0);

            mMessageList->hide();

        }

        if (mNoMessagesLabel && !mNoMessagesLabel->isVisible()) {

            mNoMessagesLabel->setMaximumHeight(QWIDGETSIZE_MAX);

            mNoMessagesLabel->show();

        }

    }

    else {

        // Hide the "no messages" label and display the message list widget.

        if (mNoMessagesLabel && mNoMessagesLabel->isVisible()) {

            mNoMessagesLabel->setMaximumHeight(0);

            mNoMessagesLabel->hide();

        }

        if (mMessageList) {

            mMessageList->setMaximumHeight(QWIDGETSIZE_MAX);

            mMessageList->show();

        }

    }

}

/*!

    Shows no messages label if no matching messages were found.

*/

void NmMessageSearchListView::updateResultView()

{

    NM_FUNCTION;

    if (mMsgListModel.rowCount() < 1) {

        // Display the "no messages".

        noMessagesLabelVisibility(true);

    }

}

/*!

    Sets the mode for the search input.

    \param mode The mode to set.

*/

void NmMessageSearchListView::setSearchInputMode(NmSearchInputMode mode)

{

    NM_FUNCTION;

    if (!mLineEdit) {

        // No line edit widget!

        return;

    }

    if (mode == NmNormalMode) {

        mLineEdit->setEnabled(true);

        mLineEdit->setFocus();

    }

    else {

        mLineEdit->setEnabled(false);

        mLineEdit->deselect();

    }

}

/*!

    From NmBaseView.

    Reloads the view contents with new start parameters. This method is

    typically used when the view is already open and an external view activation

    occurs for this same view.

*/

void NmMessageSearchListView::reloadViewContents(NmUiStartParam *startParam)

{

    NM_FUNCTION;

    if (startParam && startParam->viewId() == NmUiViewMessageSearchList) {

        // Delete the existing start parameter data.

        delete mStartParam;

        mStartParam = NULL;

        // Store the new start parameter data.

        mStartParam = startParam;

        // Update the model with new parameters.

        mUiEngine.messageListModelForSearch(startParam->mailboxId());

        refreshList();

        // Refresh the mailbox name.

        setViewTitle();

    }

    else {

        // Invalid start parameter data! Unused start parameter needs to be

        // deleted.

        NM_ERROR(1, "NmMessageSearchListView: invalid message list start parameter");

        delete startParam;

    }

}

/*!

    Displays the item context menu. This method gets called if an item on the

    list is long pressed.

*/

void NmMessageSearchListView::showItemContextMenu(

    HbAbstractViewItem *listViewItem, const QPointF &coords)

{

    NM_FUNCTION;

    // Stop search.

    if (mSearchInProgress) {

        toggleSearch();

    }

    // Store long press item for later use with response.

    mLongPressedItem = 

        mMsgListModel.data(listViewItem->modelIndex(),

                           Qt::DisplayRole).value<NmMessageListModelItem*>();

    if (mItemContextMenu && mLongPressedItem &&

        mLongPressedItem->itemType() == NmMessageListModelItem::NmMessageItemMessage) {

        // Clear the previous menu actions.

        mItemContextMenu->clearActions();

        NmUiExtensionManager &extMngr = mApplication.extManager();

        QList<NmAction*> list;

        // Fetch the menu actions based on the selected item.

        NmMessageEnvelope *envelope = mLongPressedItem->envelopePtr();

        if (envelope){

            NmActionRequest request(this, NmActionContextMenu,

                NmActionContextViewMessageSearchList, NmActionContextDataMessage,

                mStartParam->mailboxId(), envelope->folderId(),

                envelope->messageId(), QVariant::fromValue(envelope));

            extMngr.getActions(request, list);