homescreenapp/hsdomainmodel/src/hspage.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 03 May 2010 12:24:59 +0300
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permissions -rw-r--r--
Revision: 201015 Kit: 201018
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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:
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*
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*/
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#include <QPainter>
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#include <QRectF>
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#include <QGraphicsLinearLayout>
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#include <HbInstance>
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#include "hsdomainmodeldatastructures.h"
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#include "hspage.h"
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#include "hsscene.h"
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#include "hsdatabase.h"
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#include "hswidgethost.h"
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#include "hswallpaper.h"
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#include "hswidgetpositioningonwidgetadd.h"
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/*!
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    \class HsPage
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    \ingroup group_hsutils
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    \brief Represents a page in the framework.
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    HsPage is a parent for a group of widgets. HsPage can have a wallpaper.
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*/
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/*!
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    Constructor.
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    \a parent Owner.
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    \a aFlags Window flags.
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*/
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HsPage::HsPage(QGraphicsItem* parent)
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    : HbWidget(parent),
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      mDatabaseId(-1),
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      mRemovable(true)
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{
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    setFlag(QGraphicsItem::ItemHasNoContents);
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    setSizePolicy(QSizePolicy(QSizePolicy::Ignored, 
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                              QSizePolicy::Ignored));
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}
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/*!
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    Destructor.
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*/
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HsPage::~HsPage()
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{
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}
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/*!
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    Returns the database id.
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*/
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int HsPage::databaseId() const
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{
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    return mDatabaseId;
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}
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/*!
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    Sets the database id to \a id.
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*/
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void HsPage::setDatabaseId(int id)
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{
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    mDatabaseId = id;
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}
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/*!
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    Loads widgets.
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*/
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bool HsPage::load()
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{
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    if (mDatabaseId < 0) {
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        return false;
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    }
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    HsDatabase *db = HsDatabase::instance();
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    QList<HsWidgetData> datas;
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    if (!db->widgets(mDatabaseId, datas)) {
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        return false;
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    }
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    foreach (HsWidgetData data, datas) {
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        QScopedPointer<HsWidgetHost> widget(new HsWidgetHost(data.id));
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        if(!widget->load() || !widget->isValid()) {
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            continue;
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		}
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        connectWidget(widget.data());
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        widget->setPage(this);
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        widget->initializeWidget();
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        widget->showWidget();
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        mWidgets.append(widget.data());
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        widget->setParentItem(this);
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        widget.take(); // now this page owns widget
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    }
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    return true;    
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}
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bool HsPage::addExistingWidget(HsWidgetHost *widgetHost)
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{
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    if (!widgetHost) {
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        return false;
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    }
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    if (mWidgets.contains(widgetHost)) {
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        return true;
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    }
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    if (!widgetHost->setPage(this)) {
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        return false;
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    }
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    connectWidget(widgetHost);
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    mWidgets << widgetHost;
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    widgetHost->setParentItem(this);
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    return true;
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 }
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bool HsPage::removeWidget(HsWidgetHost *widgetHost)
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{
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    if (!widgetHost || !widgetHost->setPage(0)) {
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        return false;
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    }
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    disconnectWidget(widgetHost);
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    mWidgets.removeOne(widgetHost);
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    widgetHost->setParentItem(0);
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    return true;
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}
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QList<HsWidgetHost *> HsPage::newWidgets()
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{
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    return mNewWidgets;
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}
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   149
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/*!
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    Adds new widget into a page. Returns true if successfull. 
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*/
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bool HsPage::addNewWidget(HsWidgetHost* widgetHost)
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{
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    if (!widgetHost || mWidgets.contains(widgetHost)) {
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        return false;
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    }
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   158
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    if (mNewWidgets.contains(widgetHost)) {
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        return true;
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    }
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    // Set presentation.
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    QString key = HsScene::orientation() == Qt::Horizontal ? 
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        "landscape" : "portrait";
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    HsWidgetPresentationData presentation;
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    if (!widgetHost->widgetPresentationData(key, presentation)) {
36
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        presentation.key = key;
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        presentation.setPos(QPointF());
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        presentation.zValue = 0;
35
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        widgetHost->setWidgetPresentationData(presentation);
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    }
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    widgetHost->hide();
39
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    widgetHost->setPos(presentation.x, presentation.y);
36
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    widgetHost->setZValue(presentation.zValue);
35
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    connectWidget(widgetHost);
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    mNewWidgets << widgetHost;
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    return true;
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}
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   185
/*!
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    Layouts all the new widgets
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*/
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void HsPage::layoutNewWidgets()
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{
36
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   190
    if (mNewWidgets.isEmpty()) {
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   191
        return;
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   192
    }
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diff changeset
   193
    
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   194
    QString key = HsScene::orientation() == Qt::Horizontal ? 
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        "landscape" : "portrait";
35
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   196
36
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   197
    QList<QRectF> rects;
35
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   198
36
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   199
    foreach (HsWidgetHost *newWidget, mNewWidgets) {
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   200
        rects << newWidget->rect();
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diff changeset
   201
    }
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diff changeset
   202
    
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diff changeset
   203
    HsWidgetPositioningOnWidgetAdd *algorithm = 
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   204
        HsWidgetPositioningOnWidgetAdd::instance();
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diff changeset
   205
   
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   206
    QList<QRectF> calculatedRects = 
39
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diff changeset
   207
        algorithm->convert(HsScene::mainWindow()->layoutRect(), rects, QPointF());
36
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   208
    
35
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   209
    updateZValues();
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   210
36
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diff changeset
   211
    HsWidgetHost *widget = 0;
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   212
    for (int i = 0; i < mNewWidgets.count(); ++i) {
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   213
        widget = mNewWidgets.at(i);
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   214
        widget->setGeometry(calculatedRects.at(i));
35
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        widget->setWidgetPresentation();
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        widget->setPage(this);
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        widget->setParentItem(this);
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        widget->show();
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   219
    }
36
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    mWidgets << mNewWidgets;
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   221
    mNewWidgets.clear();
35
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}
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   223
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   224
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bool HsPage::deleteFromDatabase()
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{
36
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    HsDatabase *db = HsDatabase::instance();    
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   228
    
35
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   229
    foreach (HsWidgetHost *widget, mWidgets) {
36
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   230
        if (!widget->deleteFromDatabase()) {            
35
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            return false;
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   232
        }
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    }
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    if (!db->deletePage(mDatabaseId))  {
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        return false;
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    }
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    return true;
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}
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QList<HsWidgetHost *> HsPage::widgets() const
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{
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    return mWidgets;
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}
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/*!
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    Returns true if the page can be removed. Otherwise,
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    returns false.
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*/
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bool HsPage::isRemovable() const
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{
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    return mRemovable; 
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}
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/*!
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    Sets removable flag to \a removable.
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*/
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void HsPage::setRemovable(bool removable)
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{
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    mRemovable = removable; 
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}
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36
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HsPage *HsPage::createInstance(const HsPageData &pageData)
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{
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    HsDatabase *db = HsDatabase::instance();
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    Q_ASSERT(db);
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    HsPageData data(pageData);    
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    if (db->insertPage(data)) {
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        HsPage *page = new HsPage;
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        page->setDatabaseId(data.id);
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        return page;
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    }
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    return 0;
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}
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/*!
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    Calls onShow() for contained widgets.
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*/
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void HsPage::showWidgets()
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{
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    foreach (HsWidgetHost *widget, mWidgets) {
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        if (widget->parentItem() == this) {
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            widget->showWidget();
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        }
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    }
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}
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/*!
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    Calls onHide() for contained widgets.
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*/
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void HsPage::hideWidgets()
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{
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    foreach (HsWidgetHost *widget, mWidgets) {
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        if (widget->parentItem() == this) {
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            widget->hideWidget();
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        }
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    }
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}
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35
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/*!
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    Propogate online state to widgets.
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*/
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void HsPage::setOnline(bool online)
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{
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    foreach (HsWidgetHost *widget, mNewWidgets) {
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        widget->setOnline(online);
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    }
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    foreach (HsWidgetHost *widget, mWidgets) {
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        widget->setOnline(online);
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    }
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}
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39
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void HsPage::updateZValues()
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{
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    int z = 0;
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    if (!mWidgets.isEmpty()) {
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        QMultiMap<qreal, HsWidgetHost *> map;
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        foreach (HsWidgetHost *widget, mWidgets) {
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            map.insert(widget->zValue(), widget);
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        }
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        QList<HsWidgetHost *> sortedWidgets = map.values();
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        HsWidgetHost *activeWidget = HsScene::instance()->activeWidget();    
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        if (sortedWidgets.contains(activeWidget)) {
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            sortedWidgets.removeOne(activeWidget);
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            sortedWidgets.append(activeWidget);        
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        }
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        foreach (HsWidgetHost *widget, sortedWidgets) {
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            widget->setZValue(z++);
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            widget->setWidgetPresentation();
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        }
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    }
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    if (!mNewWidgets.isEmpty()) {
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        foreach (HsWidgetHost *widget, mNewWidgets) {
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            widget->setZValue(z++);
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            widget->setWidgetPresentation();
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        }
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    }
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}
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   347
35
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void HsPage::connectWidget(HsWidgetHost *widget)
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{
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    connect(widget, SIGNAL(widgetFinished(HsWidgetHost*)),
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            SLOT(onWidgetFinished(HsWidgetHost*)));
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   352
}
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   353
 
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   354
void HsPage::disconnectWidget(HsWidgetHost *widget)
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   355
{
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   356
    widget->disconnect(this);
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}
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diff changeset
   358
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   359
void HsPage::onWidgetFinished(HsWidgetHost *widget)
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   360
{
36
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   361
    Q_ASSERT(widget);
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   362
    // It can be in new widget list if we haven't layouted it yet
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   363
    // or layouted new widget and widget list
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   364
    if (!mNewWidgets.removeOne(widget)) {
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        mWidgets.removeOne(widget);
35
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   366
    }
36
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diff changeset
   367
   
35
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   368
    disconnectWidget(widget);
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   369
    widget->uninitializeWidget();
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   370
    widget->deleteFromDatabase();
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    widget->deleteLater();
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}