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      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef LinkResource_h
     32 #define LinkResource_h
     33 
     34 #include "core/loader/cache/FetchRequest.h"
     35 #include "weborigin/KURL.h"
     36 #include "wtf/RefCounted.h"
     37 #include "wtf/text/WTFString.h"
     38 
     39 namespace WebCore {
     40 
     41 class HTMLLinkElement;
     42 
     43 class LinkResource : public RefCounted<LinkResource> {
     44 public:
     45     enum Type {
     46         Style,
     47         Import
     48     };
     49 
     50     explicit LinkResource(HTMLLinkElement*);
     51     virtual ~LinkResource();
     52 
     53     virtual Type type() const = 0;
     54     virtual void process() = 0;
     55     virtual void ownerRemoved() = 0;
     56     virtual bool hasLoaded() const = 0;
     57 
     58 protected:
     59     HTMLLinkElement* m_owner;
     60 };
     61 
     62 class LinkRequestBuilder {
     63 public:
     64     explicit LinkRequestBuilder(HTMLLinkElement* owner);
     65 
     66     bool isValid() const { return !m_url.isEmpty() && m_url.isValid(); }
     67     const KURL& url() const { return m_url; }
     68     const String& charset() const { return m_charset; }
     69     FetchRequest build(bool blocking) const;
     70 
     71 private:
     72     HTMLLinkElement* m_owner;
     73     KURL m_url;
     74     String m_charset;
     75 };
     76 
     77 } // namespace WebCore
     78 
     79 #endif // LinkResource_h
     80