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Fixes version check for serialized data.

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Use new ::serialization package for save- and restore state.
This commit is contained in:
mfreiholz 2016-04-01 13:06:12 +02:00
parent 2a1bc4c43b
commit ac80242545
3 changed files with 289 additions and 243 deletions
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2
AdvancedDockingSystem/include/ads/ContainerWidget.h
View File

@ -126,8 +126,10 @@ private:
SectionWidget* dropContentOuterHelper(QLayout* l, const InternalContentData& data, Qt::Orientation orientation, bool append);
// Serialization
QByteArray saveHierarchy() const;
void saveFloatingWidgets(QDataStream& out) const;
void saveSectionWidgets(QDataStream& out, QWidget* widget) const;
bool restoreHierarchy(const QByteArray& data);
bool restoreFloatingWidgets(QDataStream& in, int version, QList<FloatingWidget*>& floatings);
bool restoreSectionWidgets(QDataStream& in, int version, QSplitter* currentSplitter, QList<SectionWidget*>& sections, QList<SectionContent::RefPtr>& contentsToHide);

528
AdvancedDockingSystem/src/ContainerWidget.cpp
View File

@ -14,6 +14,7 @@
#include "ads/SectionWidget.h"
#include "ads/SectionTitleWidget.h"
#include "ads/SectionContentWidget.h"
#include "ads/Serialization.h"
ADS_NAMESPACE_BEGIN
@ -358,92 +359,25 @@ QMenu* ContainerWidget::createContextMenu() const
QByteArray ContainerWidget::saveState() const
{
/*
# Data Format
ADS_NS_SER::InMemoryWriter writer;
quint32 Magic
quint32 Version
int Number of floating widgets
LOOP Floating widgets
QString Unique name of content
QByteArray Geometry of floating widget
bool Visibility
int Number of layout items (Valid values: 0, 1)
IF 0
int Number of hidden contents
LOOP Contents
QString Unique name of content
ELSEIF 1
... todo ...
ENDIF
*/
qDebug() << "Begin save state";
QByteArray ba;
QDataStream out(&ba, QIODevice::WriteOnly);
out.setVersion(QDataStream::Qt_4_5);
out << (quint32) 0x00001337; // Magic
out << (quint32) 1; // Version
// Save state of floating contents
saveFloatingWidgets(out);
// Save state of sections and contents
if (_mainLayout->count() <= 0 || _sections.isEmpty())
// Hierarchy data.
const QByteArray hierarchyData = saveHierarchy();
if (!hierarchyData.isEmpty())
{
// Looks like the user has hidden all contents and no more sections
// are available. We can simply write a list of all hidden contents.
out << 0; // Mode
out << _hiddenSectionContents.count();
QHashIterator<int, HiddenSectionItem> iter(_hiddenSectionContents);
while (iter.hasNext())
{
iter.next();
out << iter.value().data.content->uniqueName();
}
writer.write(ADS_NS_SER::ET_Hierarchy, hierarchyData);
}
else if (_mainLayout->count() == 1)
// SectionIndex data.
const QByteArray sectionIndexData;
if (!sectionIndexData.isEmpty())
{
out << 1; // Mode
// There should only be one!
QLayoutItem* li = _mainLayout->itemAt(0);
if (!li->widget())
qFatal("Not a widget in _mainLayout, this shouldn't happen.");
// Save sections beginning with the first QSplitter (li->widget()).
saveSectionWidgets(out, li->widget());
// Safe state of hidden contents, which doesn't have an section association
// or the section association points to a no longer existing section.
QHashIterator<int, HiddenSectionItem> iter(_hiddenSectionContents);
int cnt = 0;
while (iter.hasNext())
{
iter.next();
if (iter.value().preferredSectionId <= 0 || !SWLookupMapById(this).contains(iter.value().preferredSectionId))
cnt++;
}
out << cnt;
iter.toFront();
while (iter.hasNext())
{
iter.next();
if (iter.value().preferredSectionId <= 0 || !SWLookupMapById(this).contains(iter.value().preferredSectionId))
out << iter.value().data.content->uniqueName();
}
writer.write(ADS_NS_SER::ET_SectionIndex, sectionIndexData);
}
else
{
// More? Oh oh.. something is wrong :-/
out << -1;
qWarning() << "Oh noooz.. Something went wrong. There are too many items in _mainLayout.";
}
qDebug() << "End save state";
return ba;
if (writer.offsetsCount() == 0)
return QByteArray();
return writer.toByteArray();
}
bool ContainerWidget::restoreState(const QByteArray& data)
@ -453,172 +387,24 @@ bool ContainerWidget::restoreState(const QByteArray& data)
qDebug() << "Begin to restore state";
QDataStream in(data);
in.setVersion(QDataStream::Qt_4_5);
quint32 magic = 0;
in >> magic;
if (magic != 0x00001337)
ADS_NS_SER::InMemoryReader reader(data);
if (!reader.initReadHeader())
return false;
quint32 version = 0;
in >> version;
if (version != 1)
return false;
QList<FloatingWidget*> oldFloatings = _floatings;
QList<SectionWidget*> oldSections = _sections;
// Restore floating widgets
QList<FloatingWidget*> floatings;
bool success = restoreFloatingWidgets(in, version, floatings);
if (!success)
// Basic hierarchy data.
QByteArray hierarchyData;
if (reader.read(ADS_NS_SER::ET_Hierarchy, hierarchyData))
{
qWarning() << "Could not restore floatings completely";
restoreHierarchy(hierarchyData);
}
// QByteArray sectionIndexData;
// if (reader.read(ADS_NS_SER::ET_SectionIndex, sectionIndexData))
// {
// // do we need it?
// }
// Restore splitters, sections and contents
QList<SectionWidget*> sections;
QList<SectionContent::RefPtr> contentsToHide;
int mode = 0;
in >> mode;
if (mode == 0)
{
// List of hidden contents. There are no sections at all.
int cnt = 0;
in >> cnt;
if(cnt > 0)
{
// Create dummy section, required to call hideSectionContent() later.
SectionWidget* sw = new SectionWidget(this);
sections.append(sw);
for (int i = 0; i < cnt; ++i)
{
QString uname;
in >> uname;
const SectionContent::RefPtr sc = SCLookupMapByName(this).value(uname);
if (!sc)
continue;
InternalContentData data;
if (!takeContent(sc, data))
qFatal("This should never happen!!!");
sw->addContent(data, false);
contentsToHide.append(sc);
}
}
}
else if (mode == 1)
{
success = restoreSectionWidgets(in, version, NULL, sections, contentsToHide);
if (!success)
qWarning() << "Could not restore sections completely";
// Restore lonely hidden contents
int cnt = 0;
in >> cnt;
for (int i = 0; i < cnt; ++i)
{
QString uname;
in >> uname;
const SectionContent::RefPtr sc = SCLookupMapByName(this).value(uname);
if (!sc)
continue;
InternalContentData data;
if (!takeContent(sc, data))
{
qWarning("This should never happen! Looks like a bug during serialization, since the content is already being used in SWs.");
continue;
}
SectionWidget* sw = NULL;
if (sections.size() <= 0)
qFatal("This should never happen, because above a section should have been created.");
else
sw = sections.first();
sw->addContent(data, false);
contentsToHide.append(sc);
}
}
// Handle SectionContent which is not mentioned by deserialized data.
// What shall we do with it? For now: Simply drop them into the first SectionWidget.
if (true)
{
QList<SectionContent::RefPtr> leftContents;
// Collect all contents which has been restored
QList<SectionContent::RefPtr> contents;
for (int i = 0; i < floatings.count(); ++i)
contents.append(floatings.at(i)->content());
for (int i = 0; i < sections.count(); ++i)
for (int j = 0; j < sections.at(i)->contents().count(); ++j)
contents.append(sections.at(i)->contents().at(j));
for (int i = 0; i < contentsToHide.count(); ++i)
contents.append(contentsToHide.at(i));
// Compare restored contents with available contents
const QList<SectionContent::WeakPtr> allContents = SCLookupMapById(this).values();
for (int i = 0; i < allContents.count(); ++i)
{
const SectionContent::RefPtr sc = allContents.at(i).toStrongRef();
if (sc.isNull() || sc->containerWidget() != this)
continue;
if (contents.contains(sc))
continue;
leftContents.append(sc);
}
// What should we do with a drunken sailor.. what should.. erm..
// What should we do with the left-contents?
// Lets add them to the first found SW or create one, if no SW is available.
for (int i = 0; i < leftContents.count(); ++i)
{
const SectionContent::RefPtr sc = leftContents.at(i);
SectionWidget* sw = NULL;
if (sections.isEmpty())
{
sw = new SectionWidget(this);
sections.append(sw);
addSection(sw);
}
else
sw = sections.first();
InternalContentData data;
if (!takeContent(sc, data))
sw->addContent(sc);
else
sw->addContent(data, false);
}
}
_floatings = floatings;
_sections = sections;
// Delete old objects
QLayoutItem* old = _mainLayout->takeAt(0);
_mainLayout->addWidget(_splitter);
delete old;
qDeleteAll(oldFloatings);
qDeleteAll(oldSections);
// Hide all as "hidden" marked contents
for (int i = 0; i < contentsToHide.count(); ++i)
hideSectionContent(contentsToHide.at(i));
deleteEmptySplitter(this);
qDebug() << "End of restore state" << success;
return success;
qDebug() << "End of restore state";
return true;
}
QRect ContainerWidget::outerTopDropRect() const
@ -893,6 +679,96 @@ SectionWidget* ContainerWidget::dropContentOuterHelper(QLayout* l, const Interna
return sw;
}
QByteArray ContainerWidget::saveHierarchy() const
{
/*
# Data Format
quint32 Magic
quint32 Version
int Number of floating widgets
LOOP Floating widgets
QString Unique name of content
QByteArray Geometry of floating widget
bool Visibility
int Number of layout items (Valid values: 0, 1)
IF 0
int Number of hidden contents
LOOP Contents
QString Unique name of content
ELSEIF 1
... todo ...
ENDIF
*/
qDebug() << "Begin save state";
QByteArray ba;
QDataStream out(&ba, QIODevice::WriteOnly);
out.setVersion(QDataStream::Qt_4_5);
out << (quint32) 0x00001337; // Magic
out << (quint32) 1; // Version
// Save state of floating contents
saveFloatingWidgets(out);
// Save state of sections and contents
if (_mainLayout->count() <= 0 || _sections.isEmpty())
{
// Looks like the user has hidden all contents and no more sections
// are available. We can simply write a list of all hidden contents.
out << 0; // Mode
out << _hiddenSectionContents.count();
QHashIterator<int, HiddenSectionItem> iter(_hiddenSectionContents);
while (iter.hasNext())
{
iter.next();
out << iter.value().data.content->uniqueName();
}
}
else if (_mainLayout->count() == 1)
{
out << 1; // Mode
// There should only be one!
QLayoutItem* li = _mainLayout->itemAt(0);
if (!li->widget())
qFatal("Not a widget in _mainLayout, this shouldn't happen.");
// Save sections beginning with the first QSplitter (li->widget()).
saveSectionWidgets(out, li->widget());
// Safe state of hidden contents, which doesn't have an section association
// or the section association points to a no longer existing section.
QHashIterator<int, HiddenSectionItem> iter(_hiddenSectionContents);
int cnt = 0;
while (iter.hasNext())
{
iter.next();
if (iter.value().preferredSectionId <= 0 || !SWLookupMapById(this).contains(iter.value().preferredSectionId))
cnt++;
}
out << cnt;
iter.toFront();
while (iter.hasNext())
{
iter.next();
if (iter.value().preferredSectionId <= 0 || !SWLookupMapById(this).contains(iter.value().preferredSectionId))
out << iter.value().data.content->uniqueName();
}
}
else
{
// More? Oh oh.. something is wrong :-/
out << -1;
qWarning() << "Oh noooz.. Something went wrong. There are too many items in _mainLayout.";
}
qDebug() << "End save state";
return ba;
}
void ContainerWidget::saveFloatingWidgets(QDataStream& out) const
{
out << _floatings.count();
@ -968,6 +844,174 @@ void ContainerWidget::saveSectionWidgets(QDataStream& out, QWidget* widget) cons
}
}
bool ContainerWidget::restoreHierarchy(const QByteArray& data)
{
QDataStream in(data);
in.setVersion(QDataStream::Qt_4_5);
quint32 magic = 0;
in >> magic;
if (magic != 0x00001337)
return false;
quint32 version = 0;
in >> version;
if (version != 1)
return false;
QList<FloatingWidget*> oldFloatings = _floatings;
QList<SectionWidget*> oldSections = _sections;
// Restore floating widgets
QList<FloatingWidget*> floatings;
bool success = restoreFloatingWidgets(in, version, floatings);
if (!success)
{
qWarning() << "Could not restore floatings completely";
}
// Restore splitters, sections and contents
QList<SectionWidget*> sections;
QList<SectionContent::RefPtr> contentsToHide;
int mode = 0;
in >> mode;
if (mode == 0)
{
// List of hidden contents. There are no sections at all.
int cnt = 0;
in >> cnt;
if(cnt > 0)
{
// Create dummy section, required to call hideSectionContent() later.
SectionWidget* sw = new SectionWidget(this);
sections.append(sw);
for (int i = 0; i < cnt; ++i)
{
QString uname;
in >> uname;
const SectionContent::RefPtr sc = SCLookupMapByName(this).value(uname);
if (!sc)
continue;
InternalContentData data;
if (!takeContent(sc, data))
qFatal("This should never happen!!!");
sw->addContent(data, false);
contentsToHide.append(sc);
}
}
}
else if (mode == 1)
{
success = restoreSectionWidgets(in, version, NULL, sections, contentsToHide);
if (!success)
qWarning() << "Could not restore sections completely";
// Restore lonely hidden contents
int cnt = 0;
in >> cnt;
for (int i = 0; i < cnt; ++i)
{
QString uname;
in >> uname;
const SectionContent::RefPtr sc = SCLookupMapByName(this).value(uname);
if (!sc)
continue;
InternalContentData data;
if (!takeContent(sc, data))
{
qWarning("This should never happen! Looks like a bug during serialization, since the content is already being used in SWs.");
continue;
}
SectionWidget* sw = NULL;
if (sections.size() <= 0)
qFatal("This should never happen, because above a section should have been created.");
else
sw = sections.first();
sw->addContent(data, false);
contentsToHide.append(sc);
}
}
// Handle SectionContent which is not mentioned by deserialized data.
// What shall we do with it? For now: Simply drop them into the first SectionWidget.
if (true)
{
QList<SectionContent::RefPtr> leftContents;
// Collect all contents which has been restored
QList<SectionContent::RefPtr> contents;
for (int i = 0; i < floatings.count(); ++i)
contents.append(floatings.at(i)->content());
for (int i = 0; i < sections.count(); ++i)
for (int j = 0; j < sections.at(i)->contents().count(); ++j)
contents.append(sections.at(i)->contents().at(j));
for (int i = 0; i < contentsToHide.count(); ++i)
contents.append(contentsToHide.at(i));
// Compare restored contents with available contents
const QList<SectionContent::WeakPtr> allContents = SCLookupMapById(this).values();
for (int i = 0; i < allContents.count(); ++i)
{
const SectionContent::RefPtr sc = allContents.at(i).toStrongRef();
if (sc.isNull() || sc->containerWidget() != this)
continue;
if (contents.contains(sc))
continue;
leftContents.append(sc);
}
// What should we do with a drunken sailor.. what should.. erm..
// What should we do with the left-contents?
// Lets add them to the first found SW or create one, if no SW is available.
for (int i = 0; i < leftContents.count(); ++i)
{
const SectionContent::RefPtr sc = leftContents.at(i);
SectionWidget* sw = NULL;
if (sections.isEmpty())
{
sw = new SectionWidget(this);
sections.append(sw);
addSection(sw);
}
else
sw = sections.first();
InternalContentData data;
if (!takeContent(sc, data))
sw->addContent(sc);
else
sw->addContent(data, false);
}
}
_floatings = floatings;
_sections = sections;
// Delete old objects
QLayoutItem* old = _mainLayout->takeAt(0);
_mainLayout->addWidget(_splitter);
delete old;
qDeleteAll(oldFloatings);
qDeleteAll(oldSections);
// Hide all as "hidden" marked contents
for (int i = 0; i < contentsToHide.count(); ++i)
hideSectionContent(contentsToHide.at(i));
deleteEmptySplitter(this);
return success;
}
bool ContainerWidget::restoreFloatingWidgets(QDataStream& in, int version, QList<FloatingWidget*>& floatings)
{
Q_UNUSED(version)

2
AdvancedDockingSystem/src/Serialization.cpp
View File

@ -374,7 +374,7 @@ bool InMemoryReader::initReadHeader()
qWarning() << QString("invalid format (magic=%1)").arg(header.magic);
return false;
}
if (header.majorVersion > HeaderEntity::MAJOR_VERSION)
if (header.majorVersion != HeaderEntity::MAJOR_VERSION)
{
qWarning() << QString("format is too new (major=%1; minor=%2)")
.arg(header.majorVersion).arg(header.minorVersion);