1 files changed, 84 insertions, 0 deletions
diff --git a/WebCore/bindings/js/JSNodeFilterCondition.cpp b/WebCore/bindings/js/JSNodeFilterCondition.cpp
new file mode 100644
index 0000000..17884f9
--- /dev/null
+++ b/WebCore/bindings/js/JSNodeFilterCondition.cpp
@@ -0,0 +1,84 @@
+/*
+ *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
+ *  Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "config.h"
+#include "JSNodeFilterCondition.h"
+
+#include "Document.h"
+#include "Frame.h"
+#include "JSNode.h"
+#include "JSNodeFilter.h"
+#include "NodeFilter.h"
+#include "kjs_proxy.h"
+
+namespace WebCore {
+
+using namespace KJS;
+
+// FIXME: Add takeException as a member of ExecState?
+static JSValue* takeException(ExecState* exec)
+{
+    JSValue* exception = exec->exception();
+    exec->clearException();
+    return exception;
+}
+
+JSNodeFilterCondition::JSNodeFilterCondition(JSObject* filter)
+    : m_filter(filter)
+{
+}
+
+void JSNodeFilterCondition::mark()
+{
+    m_filter->mark();
+}
+
+short JSNodeFilterCondition::acceptNode(Node* filterNode, JSValue*& exception) const
+{
+    // FIXME: It makes no sense for this to depend on the document being in a frame!
+    Frame* frame = filterNode->document()->frame();
+    if (!frame)
+        return NodeFilter::FILTER_REJECT;
+
+    JSLock lock;
+
+    if (!m_filter->implementsCall())
+        return NodeFilter::FILTER_REJECT;
+
+    ExecState* exec = frame->scriptProxy()->globalObject()->globalExec();
+    List args;
+    args.append(toJS(exec, filterNode));
+    if (exec->hadException()) {
+        exception = takeException(exec);
+        return NodeFilter::FILTER_REJECT;
+    }
+    JSValue* result = m_filter->call(exec, m_filter, args);
+    if (exec->hadException()) {
+        exception = takeException(exec);
+        return NodeFilter::FILTER_REJECT;
+    }
+    int intResult = result->toInt32(exec);
+    if (exec->hadException()) {
+        exception = takeException(exec);
+        return NodeFilter::FILTER_REJECT;
+    }
+    return intResult;
+}
+
+} // namespace WebCore