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140 lines
3.4 KiB
C++
140 lines
3.4 KiB
C++
#include "nsCOMPtr.h"
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#include "nsIPresState.h"
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#include "nsHashtable.h"
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#include "nsISupportsPrimitives.h"
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#include "nsIComponentManager.h"
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// Static IIDs/CIDs. Try to minimize these.
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// None
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class nsPresState: public nsIPresState
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{
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NS_DECL_ISUPPORTS
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NS_IMETHOD GetStatePropertyAsSupports(const nsAReadableString& aName, nsISupports** aResult);
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NS_IMETHOD SetStatePropertyAsSupports(const nsAReadableString& aName, nsISupports* aValue);
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NS_IMETHOD GetStateProperty(const nsAReadableString& aProperty, nsAWritableString& aResult);
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NS_IMETHOD SetStateProperty(const nsAReadableString& aProperty, const nsAReadableString& aValue);
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public:
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nsPresState();
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virtual ~nsPresState();
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// Static members
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// Internal member functions
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protected:
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// MEMBER VARIABLES
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protected:
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// A string table that holds property/value pairs.
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nsSupportsHashtable* mPropertyTable;
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};
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// Static initialization
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// Implementation /////////////////////////////////////////////////////////////////
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// Implement our nsISupports methods
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NS_IMPL_ISUPPORTS1(nsPresState, nsIPresState)
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// Constructors/Destructors
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nsPresState::nsPresState(void)
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:mPropertyTable(nsnull)
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{
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NS_INIT_REFCNT();
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}
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nsPresState::~nsPresState(void)
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{
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delete mPropertyTable;
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}
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// nsIPresState Interface ////////////////////////////////////////////////////////////////
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NS_IMETHODIMP
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nsPresState::GetStateProperty(const nsAReadableString& aName,
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nsAWritableString& aResult)
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{
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// Retrieve from hashtable.
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nsCOMPtr<nsISupportsWString> str;
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nsAutoString keyStr(aName);
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nsStringKey key(keyStr);
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if (mPropertyTable)
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str = dont_AddRef(NS_STATIC_CAST(nsISupportsWString*, mPropertyTable->Get(&key)));
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if (str) {
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PRUnichar* data;
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str->GetData(&data);
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aResult.Append(data);
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nsMemory::Free(data);
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} else {
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aResult.SetLength(0);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsPresState::SetStateProperty(const nsAReadableString& aName, const nsAReadableString& aValue)
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{
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if (!mPropertyTable)
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mPropertyTable = new nsSupportsHashtable(8);
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// Add to hashtable
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nsAutoString keyStr(aName);
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nsStringKey key(keyStr);
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nsCOMPtr<nsISupportsWString> supportsStr;
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nsresult rv = nsComponentManager::CreateInstance(NS_SUPPORTS_WSTRING_CONTRACTID, nsnull,
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NS_GET_IID(nsISupportsWString), getter_AddRefs(supportsStr));
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supportsStr->SetData(nsPromiseFlatString(aValue).get());
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mPropertyTable->Put(&key, supportsStr);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsPresState::GetStatePropertyAsSupports(const nsAReadableString& aName, nsISupports** aResult)
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{
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// Retrieve from hashtable.
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nsCOMPtr<nsISupports> supp;
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nsAutoString keyStr(aName);
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nsStringKey key(keyStr);
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if (mPropertyTable)
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supp = dont_AddRef(NS_STATIC_CAST(nsISupports*, mPropertyTable->Get(&key)));
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*aResult = supp;
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NS_IF_ADDREF(*aResult);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsPresState::SetStatePropertyAsSupports(const nsAReadableString& aName, nsISupports* aValue)
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{
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if (!mPropertyTable)
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mPropertyTable = new nsSupportsHashtable(8);
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// Add to hashtable
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nsAutoString keyStr(aName);
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nsStringKey key(keyStr);
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mPropertyTable->Put(&key, aValue);
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return NS_OK;
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}
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// Creation Routine ///////////////////////////////////////////////////////////////////////
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nsresult
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NS_NewPresState(nsIPresState** aResult)
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{
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*aResult = new nsPresState;
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if (!*aResult)
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return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(*aResult);
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return NS_OK;
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}
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