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Mime settings: Avoid work at creation time

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We do not need to collect all the editor factory information on all mime
types at creation time of the model. Do it on request.

Change-Id: I52e81a5f7949a69d96f0d3f1a5dfbe64b91977ad
Reviewed-by: David Schulz <david.schulz@qt.io>
This commit is contained in:
Eike Ziller
2018-06-22 12:45:44 +02:00
parent a8c5af56a9
commit 8cbe9db185
1 changed files with 15 additions and 9 deletions
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24
src/plugins/coreplugin/mimetypesettings.cpp
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@@ -81,9 +81,8 @@ class MimeTypeSettingsModel : public QAbstractTableModel
Q_OBJECT
public:
MimeTypeSettingsModel(QObject *parent = 0)
MimeTypeSettingsModel(QObject *parent = nullptr)
: QAbstractTableModel(parent) {}
virtual ~MimeTypeSettingsModel() {}
int rowCount(const QModelIndex &parent = QModelIndex()) const override;
int columnCount(const QModelIndex &parent = QModelIndex()) const override;
@@ -93,8 +92,10 @@ public:
void load();
QString handlerForMimeType(const Utils::MimeType &mimeType) const;
QList<Utils::MimeType> m_mimeTypes;
QHash<QString, QString> m_handlersByMimeType;
mutable QHash<Utils::MimeType, QString> m_handlersByMimeType;
};
int MimeTypeSettingsModel::rowCount(const QModelIndex &) const
@@ -125,11 +126,11 @@ QVariant MimeTypeSettingsModel::data(const QModelIndex &modelIndex, int role) co
const int column = modelIndex.column();
if (role == Qt::DisplayRole) {
const QString &type = m_mimeTypes.at(modelIndex.row()).name();
const Utils::MimeType &type = m_mimeTypes.at(modelIndex.row());
if (column == 0)
return type;
return type.name();
else
return m_handlersByMimeType.value(type);
return handlerForMimeType(type);
}
return QVariant();
}
@@ -141,13 +142,18 @@ void MimeTypeSettingsModel::load()
Utils::sort(m_mimeTypes, [](const Utils::MimeType &a, const Utils::MimeType &b) {
return a.name().compare(b.name(), Qt::CaseInsensitive) < 0;
});
m_handlersByMimeType.clear();
endResetModel();
}
foreach (const Utils::MimeType &mimeType, m_mimeTypes) {
QString MimeTypeSettingsModel::handlerForMimeType(const Utils::MimeType &mimeType) const
{
if (!m_handlersByMimeType.contains(mimeType)) {
const QList<IEditorFactory *> factories = IEditorFactory::editorFactories(mimeType);
const QString value = factories.isEmpty() ? "" : factories.front()->displayName();
m_handlersByMimeType.insert(mimeType.name(), value);
m_handlersByMimeType.insert(mimeType, value);
}
endResetModel();
return m_handlersByMimeType.value(mimeType);
}
// MimeTypeSettingsPrivate