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author | Jan Dalheimer <jan@dalheimer.de> | 2015-05-28 19:38:29 +0200 |
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committer | Petr Mrázek <peterix@gmail.com> | 2015-06-06 21:23:05 +0200 |
commit | 3a8b238052163952831fb5924b2483a375e86ebd (patch) | |
tree | ab120b4fac3a5345a20e7a09e1e7477e67d9ed6f /logic/resources/ResourceProxyModel.h | |
parent | 161dc66c2c8d5f973ee69dab36c3969a7efd7495 (diff) | |
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NOISSUE Various changes from multiauth that are unrelated to it
Diffstat (limited to 'logic/resources/ResourceProxyModel.h')
-rw-r--r-- | logic/resources/ResourceProxyModel.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/logic/resources/ResourceProxyModel.h b/logic/resources/ResourceProxyModel.h new file mode 100644 index 00000000..9db09545 --- /dev/null +++ b/logic/resources/ResourceProxyModel.h @@ -0,0 +1,36 @@ +#pragma once + +#include <QIdentityProxyModel> +#include <memory> + +/// Convenience proxy model that transforms resource identifiers (strings) for Qt::DecorationRole into other types. +class ResourceProxyModel : public QIdentityProxyModel +{ + Q_OBJECT +public: + // resultTypeId is found using qMetaTypeId<T>() + explicit ResourceProxyModel(const int resultTypeId, QObject *parent = nullptr); + + enum + { + // provide this role from your model if you want to show a placeholder + PlaceholderRole = Qt::UserRole + 0xabc // some random offset to not collide with other stuff + }; + + QVariant data(const QModelIndex &proxyIndex, int role) const override; + void setSourceModel(QAbstractItemModel *model) override; + + template <typename T> + static QAbstractItemModel *mixin(QAbstractItemModel *model) + { + ResourceProxyModel *proxy = new ResourceProxyModel(qMetaTypeId<T>(), model); + proxy->setSourceModel(model); + return proxy; + } + +private: + // mutable because it needs to be available from the const data() + mutable QMap<QPersistentModelIndex, std::shared_ptr<class Resource>> m_resources; + + const int m_resultTypeId; +}; |