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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: hssearchview.cpp
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*
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*/
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#include <QApplication>
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#include <QInputContext>
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#include <QSortFilterProxyModel>
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#include <HbGroupBox>
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#include <HbLineEdit>
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#include <HbListView>
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#include <HbAbstractViewItem>
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#include <HbView>
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#include <HbSearchPanel>
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#include <caitemmodel.h>
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#include "hslistviewitem.h"
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#include "hsmainwindow.h"
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#include "hssearchview.h"
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/*!
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Set up proxy model for search.
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\param builder Retrieves UI widgets.
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\param stateContext Identifies the state where search starts from.
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\param mainWindow Enables switching between originating and search view.
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*/
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HsSearchView::HsSearchView(HsMenuViewBuilder &builder,
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HsStateContext stateContext, HsMainWindow &mainWindow) :
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mProxyModel(new QSortFilterProxyModel(this)), mSearchView(NULL),
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mSearchListView(NULL), mSearchPanel(NULL), mStateContext(stateContext),
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mBuilder(builder), mMainWindow(mainWindow), mListView(NULL),
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mVkbHost(NULL), mSearchViewBuilder(), mEmptyResultText(true)
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{
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mProxyModel->setFilterRole(CaItemModel::TextRole);
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mProxyModel->setFilterKeyColumn(1);
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mProxyModel->setSortRole(CaItemModel::TextRole);
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}
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/*!
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Empty.
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*/
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HsSearchView::~HsSearchView()
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{
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}
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/*!
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Makes the UI to show or hide view search panel.
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When search panel is shown the view toolbar and status pane
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are hidden until search panel is hidden.
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\param visible When true search panel will be shown,
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otherwise it will be hidden.
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*/
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void HsSearchView::setSearchPanelVisible(bool visible)
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{
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HSMENUTEST_FUNC_ENTRY("HsMenuView::setSearchPanelVisible");
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if (visible && !isActive()) {
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searchBegins();
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connectSearchItemViewsSignals();
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connectSearchPanelSignals();
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} else if (isActive()) {
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disconnectSearchPanelSignals();
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disconnectSearchItemViewsSignals();
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searchFinished();
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}
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HSMENUTEST_FUNC_EXIT("HsMenuView::setSearchPanelVisible");
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}
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/*!
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\param view List view to operate on.
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\return Index of F=first visible item of \a view if any
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or default QModelIndex otherwise.
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*/
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QModelIndex HsSearchView::firstVisibleItemIndex(const HbListView *view) const
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{
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const QList<HbAbstractViewItem *> array = view->visibleItems();
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if (array.count()) {
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return array[0]->modelIndex();
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}
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return QModelIndex();
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}
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/*!
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Displays search panel with view representing search results.
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*/
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void HsSearchView::searchBegins()
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{
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HSMENUTEST_FUNC_ENTRY("HsSearchView::searchBegins");
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setOriginatingContext();
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mListView = mBuilder.currentListView();
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mSearchViewInitialIndex = firstVisibleItemIndex(mListView);
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mProxyModel->invalidate();
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mProxyModel->setSourceModel(mListView->model());
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mProxyModel->setFilterRegExp(
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QRegExp(QString(".*"), Qt::CaseInsensitive, QRegExp::RegExp));
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mSearchView = mSearchViewBuilder.searchView();
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mSearchListView = mSearchViewBuilder.searchListView();
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mSearchPanel = mSearchViewBuilder.searchPanel();
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initSearchPanel(*mSearchPanel);
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mVkbHost.reset(new HbShrinkingVkbHost(mSearchView));
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if (mBuilder.currentViewLabel()) {
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mSearchViewBuilder.searchViewLabel()->setHeading(
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mBuilder.currentViewLabel()->heading());
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mSearchViewBuilder.setSearchLabledContext();
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}
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mSearchView->hideItems(Hb::AllItems);
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mSearchListView->setModel(mProxyModel, new HsListViewItem());
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mMainWindow.setCurrentView(mSearchView);
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mSearchListView->scrollTo(
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mProxyModel->mapFromSource(mSearchViewInitialIndex),
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HbAbstractItemView::PositionAtTop);
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setNoResultsVisibility();
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HSMENUTEST_FUNC_EXIT("HsSearchView::searchBegins");
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}
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/*!
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Handles button visibility.
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\param visibility indicates whether show or not to show 'empty' label.
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*/
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void HsSearchView::setNoResultsVisibility()
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{
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if (mProxyModel->rowCount() && mEmptyResultText) {
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mSearchViewBuilder.loadViewListSection();
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mEmptyResultText = false;
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} else if (!mProxyModel->rowCount() && !mEmptyResultText) {
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mSearchViewBuilder.loadViewEmptySection();
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mEmptyResultText = true;
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}
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}
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/*
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Connects \a activated and \a longPressed signals coming from search list
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view to emit corresponding signal of this object with translated model index.
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*/
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void HsSearchView::connectSearchItemViewsSignals()
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{
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connect(mSearchListView, SIGNAL(activated(QModelIndex)),
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this, SLOT(activatedProxySlot(QModelIndex)));
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connect(mSearchListView, SIGNAL(longPressed(HbAbstractViewItem *, QPointF)),
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this, SLOT(longPressedProxySlot(HbAbstractViewItem *, QPointF)));
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}
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/*!
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Disconnects \a activated and \a longPressed signals coming from list
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view from to emit corresponding signal
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of this object with translated model index.
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*/
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void HsSearchView::disconnectSearchItemViewsSignals()
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{
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disconnect(mSearchListView, SIGNAL(activated(QModelIndex)),
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this, SLOT(activatedProxySlot(QModelIndex)));
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disconnect(mSearchListView,
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SIGNAL(longPressed(HbAbstractViewItem *, QPointF)),
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this, SLOT(longPressedProxySlot(HbAbstractViewItem *, QPointF)));
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}
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/*!
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Makes search panel invisible.
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Equivalent to \a setSearchPanelVisible(false).
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*/
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void HsSearchView::hideSearchPanel()
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{
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HSMENUTEST_FUNC_ENTRY("HsMenuView::hideSearchPanel");
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setSearchPanelVisible(false);
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HSMENUTEST_FUNC_EXIT("HsMenuView::hideSearchPanel");
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}
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/*!
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Connects signals \a exitClicked and \a criteriaChanged emitted
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by search panel with handling slots of the object or its members.
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*/
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void HsSearchView::connectSearchPanelSignals()
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{
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connect(mProxyModel, SIGNAL(rowsInserted(QModelIndex, int, int)),
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this, SLOT(setNoResultsVisibility()));
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connect(mProxyModel, SIGNAL(rowsRemoved(QModelIndex, int, int)),
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this, SLOT(setNoResultsVisibility()));
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connect(mSearchPanel, SIGNAL(exitClicked()),
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this, SLOT(hideSearchPanel()));
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connect(mSearchPanel, SIGNAL(criteriaChanged(QString)),
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this, SLOT(findItem(QString)));
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}
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/*!
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Disconnects signals \a exitClicked and \a criteriaChanged emitted
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by search panel from handling slots of the object or its members
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Scrolls view to state before connections.
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*/
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void HsSearchView::disconnectSearchPanelSignals()
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{
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mProxyModel->disconnect(this);
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mSearchPanel->disconnect(this);
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}
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/*!
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Scrolls originating view to first item matching search criteria.
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*/
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void HsSearchView::searchFinished()
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{
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HSMENUTEST_FUNC_ENTRY("HsSearchView::searchFinished");
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mIndexToScrollAfterSearchDone = firstVisibleItemIndex(mSearchListView);
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setOriginatingContext();
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mMainWindow.setCurrentView(mBuilder.currentView());
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mListView->scrollTo(mProxyModel->mapToSource(
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mIndexToScrollAfterSearchDone),
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HbAbstractItemView::PositionAtTop);
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HbVkbHost::detachHost(mSearchView);
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mVkbHost.reset(NULL);
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mSearchListView = NULL;
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mSearchPanel = NULL;
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mProxyModel->setSourceModel(NULL);
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HSMENUTEST_FUNC_EXIT("HsSearchView::searchFinished");
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}
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/*!
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Looks up for item and if found scrolls to it.
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\param criteriaStr The item name to find.
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*/
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void HsSearchView::findItem(QString criteriaStr)
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{
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qDebug() << "HsSearchView::findItem: " + criteriaStr;
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HSMENUTEST_FUNC_ENTRY("HsSearchView::findItem");
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mProxyModel->setFilterRegExp(
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QRegExp("(^|\\b)" + criteriaStr, Qt::CaseInsensitive));
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mSearchListView->scrollTo(
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mProxyModel->index(0,0), HbAbstractItemView::PositionAtTop);
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HSMENUTEST_FUNC_EXIT("HsSearchView::findItem");
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}
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/*!
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Slot used to translate activated signal from proxy model to normal model.
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\param index Represents an item activated in search list view.
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*/
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void HsSearchView::activatedProxySlot(const QModelIndex &index)
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{
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emit activated(mProxyModel->mapToSource(index));
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}
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/*!
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Slot used to forward 'long pressed' signal with item description transladed
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from search view context to context of the view search was requested from.
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\param item Long pressed item.
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\param coords Coordinates of the long press action.
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*/
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void HsSearchView::longPressedProxySlot(
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HbAbstractViewItem *item, const QPointF &coords)
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{
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/*
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this is a kind of hack, introduced for reasons:
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item object should be reusable later, but orbit (or qt) prevents setting
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its index model to previous state
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*/
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mSearchViewLongPressedIndex = mProxyModel->mapToSource(
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item->modelIndex());
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QScopedPointer<HbAbstractViewItem> itemNew(item->createItem());
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itemNew->setModelIndex(mSearchViewLongPressedIndex);
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emit longPressed(itemNew.data(), coords);
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}
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/*!
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Sets up search panel.
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\param searchPanel Search panel to initialize.
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*/
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void HsSearchView::initSearchPanel(HbSearchPanel &searchPanel)
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{
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HbLineEdit *const lineEdit(searchPanelLineEdit(searchPanel));
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lineEdit->setText("");
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lineEdit->setFocus();
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lineEdit->setInputMethodHints(
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Qt::ImhNoPredictiveText | Qt::ImhNoAutoUppercase);
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}
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/*!
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\param searchPanel Search panel to operate on.
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\return Line edit of the searchPanel on success, NULL otherwise.
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*/
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HbLineEdit *HsSearchView::searchPanelLineEdit(
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HbSearchPanel &searchPanel) const
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{
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HSMENUTEST_FUNC_ENTRY("HsSearchView::searchPanelLineEdit");
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HbLineEdit *result(0);
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foreach(QGraphicsItem *obj, searchPanel.childItems()) {
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QGraphicsWidget *const widget = static_cast<QGraphicsWidget *>(obj);
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if (widget != NULL) {
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HbLineEdit *const lineEdit = qobject_cast<HbLineEdit *>(widget);
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if (lineEdit != NULL) {
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result = lineEdit;
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break;
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}
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}
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}
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HSMENUTEST_FUNC_EXIT("HsSearchView::searchPanelLineEdit");
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return result;
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}
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/*!
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Sets the builder context to the one determined by \a mStateContext and
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\a HsItemViewContext.
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*/
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void HsSearchView::setOriginatingContext()
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{
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mBuilder.setStateContext(mStateContext);
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mBuilder.setOperationalContext(HsItemViewContext);
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}
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/*!
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\retval true when search view is already invoked, \a false otherwise.
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*/
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bool HsSearchView::isActive() const
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{
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return mSearchListView != NULL;
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}
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