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#pragma once
#include <QVariant>
#include <memory>
class Resource;
/** Base class for things that can retrieve a resource.
*
* Subclass, provide a constructor that takes a single QString as argument, and
* call Resource::registerHandler<MyResourceHandler>("<id>"), where <id> is the
* prefix of the resource ("web", "icon", etc.)
*/
class ResourceHandler
{
public:
virtual ~ResourceHandler() {}
void setResource(Resource *resource) { m_resource = resource; }
/// reimplement this if you need to do something after you have been put in a shared pointer
// we do this instead of inheriting from std::enable_shared_from_this
virtual void init(std::shared_ptr<ResourceHandler>&) {}
QVariant result() const { return m_result; }
protected: // use these methods to notify the resource of changes
void setResult(const QVariant &result);
void setFailure(const QString &reason);
void setProgress(const int progress);
private:
QVariant m_result;
Resource *m_resource = nullptr;
};
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