1 files changed, 100 insertions, 0 deletions
diff --git a/Tools/WebKitTestRunner/UIScriptContext/UIScriptContext.h b/Tools/WebKitTestRunner/UIScriptContext/UIScriptContext.h
new file mode 100644
index 000000000..b17c696c0
--- /dev/null
+++ b/Tools/WebKitTestRunner/UIScriptContext/UIScriptContext.h
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2015 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef UIScriptContext_h
+#define UIScriptContext_h
+
+#include <JavaScriptCore/JSRetainPtr.h>
+#include <wtf/HashMap.h>
+#include <wtf/RefPtr.h>
+
+namespace WTR {
+
+class UIScriptController;
+
+class UIScriptContextDelegate {
+public:
+    virtual void uiScriptDidComplete(WKStringRef result, unsigned callbackID) = 0;
+};
+
+const unsigned firstNonPersistentCallbackID = 1000;
+
+typedef enum  {
+    CallbackTypeWillBeginZooming = 0,
+    CallbackTypeDidEndZooming,
+    CallbackTypeDidShowKeyboard,
+    CallbackTypeDidHideKeyboard,
+    CallbackTypeDidEndScrolling,
+    CallbackTypeNonPersistent = firstNonPersistentCallbackID
+} CallbackType;
+
+class UIScriptContext {
+    WTF_MAKE_NONCOPYABLE(UIScriptContext);
+public:
+    UIScriptContext(UIScriptContextDelegate&);
+    ~UIScriptContext();
+
+    void runUIScript(WKStringRef script, unsigned scriptCallbackID);
+    void requestUIScriptCompletion(JSStringRef);
+
+    // For one-shot tasks callbacks.
+    unsigned prepareForAsyncTask(JSValueRef taskCallback, CallbackType);
+    void asyncTaskComplete(unsigned taskCallbackID);
+
+    // For persistent callbacks.
+    unsigned registerCallback(JSValueRef taskCallback, CallbackType);
+    JSValueRef callbackWithID(unsigned callbackID);
+    void unregisterCallback(unsigned callbackID);
+    void fireCallback(unsigned callbackID);
+
+    unsigned nextTaskCallbackID(CallbackType);
+
+    JSObjectRef objectFromRect(const WKRect&) const;
+
+private:
+    JSRetainPtr<JSGlobalContextRef> m_context;
+    
+    bool hasOutstandingAsyncTasks() const { return !m_callbacks.isEmpty(); }
+    bool currentParentCallbackIsPendingCompletion() const { return m_uiScriptResultsPendingCompletion.contains(m_currentScriptCallbackID); }
+    bool currentParentCallbackHasOutstandingAsyncTasks() const;
+    void tryToCompleteUIScriptForCurrentParentCallback();
+    
+    struct Task {
+        unsigned parentScriptCallbackID { 0 };
+        JSValueRef callback { nullptr };
+    };
+    HashMap<unsigned, Task> m_callbacks;
+    HashMap<unsigned, JSStringRef> m_uiScriptResultsPendingCompletion;
+
+    UIScriptContextDelegate& m_delegate;
+    RefPtr<UIScriptController> m_controller;
+    
+    unsigned m_currentScriptCallbackID { 0 };
+    unsigned m_nextTaskCallbackID { 0 };
+};
+
+}
+
+#endif // UIScriptContext_h