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 * Copyright (C) 2012 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
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#ifndef WebTextFieldDecoratorClient_h
#define WebTextFieldDecoratorClient_h

#include "../../../Platform/chromium/public/WebCString.h"

#if WEBKIT_IMPLEMENTATION
namespace WebCore { class TextFieldDecorator; }
#endif

namespace WebKit {

class WebInputElement;

class WebTextFieldDecoratorClient {
public:
    // The function should return true if the specified input element should
    // have a decoration icon. This function is called whenever a text field is
    // created, and should not take much time.
    virtual bool shouldAddDecorationTo(const WebInputElement&) = 0;
    // Returns true if the decoration should be visible when it's created.
    virtual bool visibleByDefault() = 0;

    // Image resource name for the normal state. The image is stretched to
    // font-size x font-size square. The function must return an existing
    // resource name.
    virtual WebCString imageNameForNormalState() = 0;
    // Image resource name for the disabled state. If this function returns an
    // empty string, imageNameForNormalState() is used even for the disabled
    // state.
    virtual WebCString imageNameForDisabledState() = 0;
    // Image resource name for the read only state. If this function returns an
    // empty string, the image same as imageNameForDisabledState() is used.
    virtual WebCString imageNameForReadOnlyState() = 0;
    // Image resource name for when the imaged is being hovered over. If this
    // function returns an empty string, imageNameForNormalState() is used
    // instead.
    virtual WebCString imageNameForHoverState() {return WebCString();}

    // This is called when the decoration icon is clicked.
    virtual void handleClick(WebInputElement&) = 0;
    // This is called when the input element loses its renderer. An
    // implementation of this function should not do something which updates
    // state of WebKit objects.
    virtual void willDetach(const WebInputElement&) = 0;

#if WEBKIT_IMPLEMENTATION
    bool isClientFor(WebCore::TextFieldDecorator*);
#endif

    virtual ~WebTextFieldDecoratorClient() { }
};

}

#endif // WebTextFieldDecoratorClient_h