text: /*
   * Copyright (C) 2013 Google 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:
   *
   *     * 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.
   *     * Neither the name of Google Inc. nor the names of its
   * contributors may be used to endorse or promote products derived from
   * this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
   * OWNER OR 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 FontFace_h
  #define FontFace_h
  
  #include "bindings/core/v8/ScriptPromise.h"
  #include "bindings/core/v8/ScriptPromiseProperty.h"
  #include "bindings/core/v8/ScriptWrappable.h"
  #include "core/CSSPropertyNames.h"
  #include "core/css/CSSValue.h"
  #include "core/dom/ActiveDOMObject.h"
  #include "core/dom/DOMException.h"
  #include "platform/fonts/FontTraits.h"
  #include "wtf/PassRefPtr.h"
  #include "wtf/RefCounted.h"
  #include "wtf/text/WTFString.h"
  
  namespace blink {
  
  class CSSFontFace;
  class CSSValueList;
  class DOMArrayBuffer;
  class DOMArrayBufferView;
  class Document;
  class ExceptionState;
  class FontFaceDescriptors;
  class StringOrArrayBufferOrArrayBufferView;
  class StylePropertySet;
  class StyleRuleFontFace;
  
  class FontFace : public RefCountedWillBeGarbageCollectedFinalized<FontFace>, public ScriptWrappable, public ActiveDOMObject {
      DEFINE_WRAPPERTYPEINFO();
      WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(FontFace);
  public:
      enum LoadStatus { Unloaded, Loading, Loaded, Error };
  
      static PassRefPtrWillBeRawPtr<FontFace> create(ExecutionContext*, const AtomicString& family, StringOrArrayBufferOrArrayBufferView&, const FontFaceDescriptors&);
      static PassRefPtrWillBeRawPtr<FontFace> create(Document*, const StyleRuleFontFace*);
  
      ~FontFace();
  
      const AtomicString& family() const { return m_family; }
      String style() const;
      String weight() const;
      String stretch() const;
      String unicodeRange() const;
      String variant() const;
      String featureSettings() const;
  
      // FIXME: Changing these attributes should affect font matching.
      void setFamily(ExecutionContext*, const AtomicString& s, ExceptionState&) { m_family = s; }
      void setStyle(ExecutionContext*, const String&, ExceptionState&);
      void setWeight(ExecutionContext*, const String&, ExceptionState&);
      void setStretch(ExecutionContext*, const String&, ExceptionState&);
      void setUnicodeRange(ExecutionContext*, const String&, ExceptionState&);
      void setVariant(ExecutionContext*, const String&, ExceptionState&);
      void setFeatureSettings(ExecutionContext*, const String&, ExceptionState&);
  
      String status() const;
      ScriptPromise loaded(ScriptState* scriptState) { return fontStatusPromise(scriptState); }
  
      ScriptPromise load(ScriptState*);
  
      LoadStatus loadStatus() const { return m_status; }
      void setLoadStatus(LoadStatus);
      void setError(PassRefPtrWillBeRawPtr<DOMException> = nullptr);
      DOMException* error() const { return m_error.get(); }
      FontTraits traits() const;
      CSSFontFace* cssFontFace() { return m_cssFontFace.get(); }
  
      virtual void trace(Visitor*) override;
  
      bool hadBlankText() const;
  
      class LoadFontCallback : public RefCountedWillBeGarbageCollectedFinalized<LoadFontCallback> {
      public:
          virtual ~LoadFontCallback() { }
          virtual void notifyLoaded(FontFace*) = 0;
          virtual void notifyError(FontFace*) = 0;
          virtual void trace(Visitor*) { }
      };
      void loadWithCallback(PassRefPtrWillBeRawPtr<LoadFontCallback>, ExecutionContext*);
  
      // ActiveDOMObject
      virtual bool hasPendingActivity() const override;
  
  private:
      static PassRefPtrWillBeRawPtr<FontFace> create(ExecutionContext*, const AtomicString& family, PassRefPtr<DOMArrayBuffer> source, const FontFaceDescriptors&);
      static PassRefPtrWillBeRawPtr<FontFace> create(ExecutionContext*, const AtomicString& family, PassRefPtr<DOMArrayBufferView>, const FontFaceDescriptors&);
      static PassRefPtrWillBeRawPtr<FontFace> create(ExecutionContext*, const AtomicString& family, const String& source, const FontFaceDescriptors&);
  
      explicit FontFace(ExecutionContext*);
      FontFace(ExecutionContext*, const AtomicString& family, const FontFaceDescriptors&);
  
      void initCSSFontFace(Document*, PassRefPtrWillBeRawPtr<CSSValue> src);
      void initCSSFontFace(const unsigned char* data, unsigned size);
      void setPropertyFromString(const Document*, const String&, CSSPropertyID, ExceptionState* = 0);
      bool setPropertyFromStyle(const StylePropertySet&, CSSPropertyID);
      bool setPropertyValue(PassRefPtrWillBeRawPtr<CSSValue>, CSSPropertyID);
      bool setFamilyValue(CSSValueList*);
      void loadInternal(ExecutionContext*);
      ScriptPromise fontStatusPromise(ScriptState*);
  
      typedef ScriptPromiseProperty<RawPtrWillBeMember<FontFace>, RawPtrWillBeMember<FontFace>, RefPtrWillBeMember<DOMException> > LoadedProperty;
  
      AtomicString m_family;
      RefPtrWillBeMember<CSSValue> m_src;
      RefPtrWillBeMember<CSSValue> m_style;
      RefPtrWillBeMember<CSSValue> m_weight;
      RefPtrWillBeMember<CSSValue> m_stretch;
      RefPtrWillBeMember<CSSValue> m_unicodeRange;
      RefPtrWillBeMember<CSSValue> m_variant;
      RefPtrWillBeMember<CSSValue> m_featureSettings;
      LoadStatus m_status;
      RefPtrWillBeMember<DOMException> m_error;
  
      PersistentWillBeMember<LoadedProperty> m_loadedProperty;
      OwnPtrWillBeMember<CSSFontFace> m_cssFontFace;
      WillBeHeapVector<RefPtrWillBeMember<LoadFontCallback> > m_callbacks;
  };
  
  typedef WillBeHeapVector<RefPtrWillBeMember<FontFace> > FontFaceArray;
  
  } // namespace blink
  
  #endif // FontFace_h
  