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      1 /*
      2  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
      3  * Copyright (C) 2010 Google Inc. All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are
      7  * met:
      8  *
      9  *     * Redistributions of source code must retain the above copyright
     10  * notice, this list of conditions and the following disclaimer.
     11  *     * Redistributions in binary form must reproduce the above
     12  * copyright notice, this list of conditions and the following disclaimer
     13  * in the documentation and/or other materials provided with the
     14  * distribution.
     15  *     * Neither the name of Google Inc. nor the names of its
     16  * contributors may be used to endorse or promote products derived from
     17  * this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     22  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     23  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     25  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     29  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef SliderThumbElement_h
     33 #define SliderThumbElement_h
     34 
     35 #include "HTMLNames.h"
     36 #include "core/html/HTMLDivElement.h"
     37 #include "core/rendering/RenderBlockFlow.h"
     38 #include "wtf/Forward.h"
     39 
     40 namespace WebCore {
     41 
     42 class HTMLElement;
     43 class HTMLInputElement;
     44 class Event;
     45 class FloatPoint;
     46 
     47 class SliderThumbElement FINAL : public HTMLDivElement {
     48 public:
     49     static PassRefPtr<SliderThumbElement> create(Document&);
     50 
     51     void setPositionFromValue();
     52 
     53     void dragFrom(const LayoutPoint&);
     54     virtual void defaultEventHandler(Event*);
     55     virtual bool willRespondToMouseMoveEvents() OVERRIDE;
     56     virtual bool willRespondToMouseClickEvents() OVERRIDE;
     57     virtual void detach(const AttachContext& = AttachContext()) OVERRIDE;
     58     virtual const AtomicString& pseudo() const OVERRIDE;
     59     HTMLInputElement* hostInput() const;
     60     void setPositionFromPoint(const LayoutPoint&);
     61     void stopDragging();
     62 
     63 private:
     64     SliderThumbElement(Document&);
     65     virtual RenderObject* createRenderer(RenderStyle*);
     66     virtual PassRefPtr<Element> cloneElementWithoutAttributesAndChildren();
     67     virtual bool isDisabledFormControl() const OVERRIDE;
     68     virtual bool matchesReadOnlyPseudoClass() const OVERRIDE;
     69     virtual bool matchesReadWritePseudoClass() const OVERRIDE;
     70     virtual Node* focusDelegate();
     71     void startDragging();
     72 
     73     bool m_inDragMode;
     74 };
     75 
     76 inline PassRefPtr<Element> SliderThumbElement::cloneElementWithoutAttributesAndChildren()
     77 {
     78     return create(document());
     79 }
     80 
     81 inline SliderThumbElement* toSliderThumbElement(Node* node)
     82 {
     83     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isHTMLElement());
     84     return static_cast<SliderThumbElement*>(node);
     85 }
     86 
     87 // --------------------------------
     88 
     89 class RenderSliderThumb FINAL : public RenderBlockFlow {
     90 public:
     91     RenderSliderThumb(SliderThumbElement*);
     92     void updateAppearance(RenderStyle* parentStyle);
     93 
     94 private:
     95     virtual bool isSliderThumb() const;
     96     virtual bool supportsPartialLayout() const OVERRIDE { return false; }
     97 };
     98 
     99 // --------------------------------
    100 
    101 class SliderContainerElement FINAL : public HTMLDivElement {
    102 public:
    103     static PassRefPtr<SliderContainerElement> create(Document&);
    104 
    105 private:
    106     SliderContainerElement(Document&);
    107     virtual RenderObject* createRenderer(RenderStyle*);
    108     virtual const AtomicString& pseudo() const;
    109 };
    110 
    111 }
    112 
    113 #endif
    114