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-rw-r--r--widget/nsBaseClipboard.cpp125
1 files changed, 125 insertions, 0 deletions
diff --git a/widget/nsBaseClipboard.cpp b/widget/nsBaseClipboard.cpp
new file mode 100644
index 000000000..850216ba4
--- /dev/null
+++ b/widget/nsBaseClipboard.cpp
@@ -0,0 +1,125 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsBaseClipboard.h"
+
+#include "nsIClipboardOwner.h"
+#include "nsCOMPtr.h"
+#include "nsXPCOM.h"
+#include "nsISupportsPrimitives.h"
+
+nsBaseClipboard::nsBaseClipboard()
+ : mEmptyingForSetData(false)
+ , mIgnoreEmptyNotification(false)
+{
+}
+
+nsBaseClipboard::~nsBaseClipboard()
+{
+ EmptyClipboard(kSelectionClipboard);
+ EmptyClipboard(kGlobalClipboard);
+ EmptyClipboard(kFindClipboard);
+}
+
+NS_IMPL_ISUPPORTS(nsBaseClipboard, nsIClipboard)
+
+/**
+ * Sets the transferable object
+ *
+ */
+NS_IMETHODIMP nsBaseClipboard::SetData(nsITransferable * aTransferable, nsIClipboardOwner * anOwner,
+ int32_t aWhichClipboard)
+{
+ NS_ASSERTION ( aTransferable, "clipboard given a null transferable" );
+
+ if (aTransferable == mTransferable && anOwner == mClipboardOwner)
+ return NS_OK;
+ bool selectClipPresent;
+ SupportsSelectionClipboard(&selectClipPresent);
+ bool findClipPresent;
+ SupportsFindClipboard(&findClipPresent);
+ if ( !selectClipPresent && !findClipPresent && aWhichClipboard != kGlobalClipboard )
+ return NS_ERROR_FAILURE;
+
+ mEmptyingForSetData = true;
+ EmptyClipboard(aWhichClipboard);
+ mEmptyingForSetData = false;
+
+ mClipboardOwner = anOwner;
+ mTransferable = aTransferable;
+
+ nsresult rv = NS_ERROR_FAILURE;
+ if (mTransferable) {
+ rv = SetNativeClipboardData(aWhichClipboard);
+ }
+
+ return rv;
+}
+
+/**
+ * Gets the transferable object
+ *
+ */
+NS_IMETHODIMP nsBaseClipboard::GetData(nsITransferable * aTransferable, int32_t aWhichClipboard)
+{
+ NS_ASSERTION ( aTransferable, "clipboard given a null transferable" );
+
+ bool selectClipPresent;
+ SupportsSelectionClipboard(&selectClipPresent);
+ bool findClipPresent;
+ SupportsFindClipboard(&findClipPresent);
+ if ( !selectClipPresent && !findClipPresent && aWhichClipboard != kGlobalClipboard )
+ return NS_ERROR_FAILURE;
+
+ if ( aTransferable )
+ return GetNativeClipboardData(aTransferable, aWhichClipboard);
+
+ return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP nsBaseClipboard::EmptyClipboard(int32_t aWhichClipboard)
+{
+ bool selectClipPresent;
+ SupportsSelectionClipboard(&selectClipPresent);
+ bool findClipPresent;
+ SupportsFindClipboard(&findClipPresent);
+ if (!selectClipPresent && !findClipPresent && aWhichClipboard != kGlobalClipboard)
+ return NS_ERROR_FAILURE;
+
+ if (mIgnoreEmptyNotification)
+ return NS_OK;
+
+ if (mClipboardOwner) {
+ mClipboardOwner->LosingOwnership(mTransferable);
+ mClipboardOwner = nullptr;
+ }
+
+ mTransferable = nullptr;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsBaseClipboard::HasDataMatchingFlavors(const char** aFlavorList,
+ uint32_t aLength,
+ int32_t aWhichClipboard,
+ bool* outResult)
+{
+ *outResult = true; // say we always do.
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsBaseClipboard::SupportsSelectionClipboard(bool* _retval)
+{
+ *_retval = false; // we don't support the selection clipboard by default.
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsBaseClipboard::SupportsFindClipboard(bool* _retval)
+{
+ *_retval = false; // we don't support the find clipboard by default.
+ return NS_OK;
+}