Initial publish

1 files changed, 105 insertions, 0 deletions

diff --git a/wpd/WpdServiceSampleDriver/WpdObjectEnum.h b/wpd/WpdServiceSampleDriver/WpdObjectEnum.h
new file mode 100644
index 00000000..2b140242
--- /dev/null
+++ b/wpd/WpdServiceSampleDriver/WpdObjectEnum.h
@@ -0,0 +1,105 @@
+#pragma once
+
+// This class is used to store the context for a specific enumeration.
+class WpdObjectEnumeratorContext : public IUnknown
+{
+public:
+    WpdObjectEnumeratorContext() :
+        m_cRef(1),
+        m_TotalChildren(0),
+        m_ChildrenEnumerated(0),
+        m_Scope(FULL_DEVICE_ACCESS)
+    {
+
+    }
+
+    ~WpdObjectEnumeratorContext()
+    {
+
+    }
+
+public: // IUnknown
+    ULONG __stdcall AddRef()
+    {
+        InterlockedIncrement((long*) &m_cRef);
+        return m_cRef;
+    }
+
+    _At_(this, __drv_freesMem(Mem)) 
+    ULONG __stdcall Release()
+    {
+        ULONG ulRefCount = m_cRef - 1;
+
+        if (InterlockedDecrement((long*) &m_cRef) == 0)
+        {
+            delete this;
+            return 0;
+        }
+        return ulRefCount;
+    }
+
+    HRESULT __stdcall QueryInterface(
+        REFIID riid,
+        void** ppv)
+    {
+        HRESULT hr = S_OK;
+
+        if(riid == IID_IUnknown)
+        {
+            *ppv = static_cast<IUnknown*>(this);
+            AddRef();
+        }
+        else
+        {
+            *ppv = NULL;
+            hr = E_NOINTERFACE;
+        }
+
+        return hr;
+    }
+
+private:
+    DWORD m_cRef;
+
+public:
+    bool HasMoreChildrenToEnumerate()
+    {
+        return ((m_TotalChildren - m_ChildrenEnumerated) > 0);
+    }
+
+// WpdObjectEnumeratorContext specific data
+public:
+    ACCESS_SCOPE m_Scope;
+    CAtlStringW  m_strParentObjectID;    // object identifier of the object whose children are being enumerated
+    DWORD        m_TotalChildren;        // number of bytes transferred from the resource to the caller
+    DWORD        m_ChildrenEnumerated;   // number of children returned during the enumeration operation
+};
+
+class WpdObjectEnumerator
+{
+public:
+    WpdObjectEnumerator();
+    virtual ~WpdObjectEnumerator();
+
+    HRESULT Initialize(_In_ FakeDevice* pDevice);
+
+    HRESULT DispatchWpdMessage(
+        _In_     REFPROPERTYKEY         Command,
+        _In_     IPortableDeviceValues* pParams,
+        _In_     IPortableDeviceValues* pResults);
+
+    HRESULT OnStartFind(
+        _In_    IPortableDeviceValues*  pParams,
+        _In_    IPortableDeviceValues*  pResults);
+
+    HRESULT OnFindNext(
+        _In_     IPortableDeviceValues*  pParams,
+        _In_     IPortableDeviceValues*  pResults);
+
+    HRESULT OnEndFind(
+        _In_      IPortableDeviceValues*  pParams,
+        _In_      IPortableDeviceValues*  pResults);
+
+private:
+    FakeDevice* m_pDevice;
+};