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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/RenderBlock.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& part() const OVERRIDE;
     59     HTMLInputElement* hostInput() const;
     60     void setPositionFromPoint(const LayoutPoint&);
     61 
     62 private:
     63     SliderThumbElement(Document*);
     64     virtual RenderObject* createRenderer(RenderStyle*);
     65     virtual PassRefPtr<Element> cloneElementWithoutAttributesAndChildren();
     66     virtual bool isDisabledFormControl() const OVERRIDE;
     67     virtual bool matchesReadOnlyPseudoClass() const OVERRIDE;
     68     virtual bool matchesReadWritePseudoClass() const OVERRIDE;
     69     virtual Node* focusDelegate();
     70     void startDragging();
     71     void stopDragging();
     72 
     73     bool m_inDragMode;
     74 };
     75 
     76 inline SliderThumbElement::SliderThumbElement(Document* document)
     77     : HTMLDivElement(HTMLNames::divTag, document)
     78     , m_inDragMode(false)
     79 {
     80 }
     81 
     82 inline PassRefPtr<SliderThumbElement> SliderThumbElement::create(Document* document)
     83 {
     84     return adoptRef(new SliderThumbElement(document));
     85 }
     86 
     87 inline PassRefPtr<Element> SliderThumbElement::cloneElementWithoutAttributesAndChildren()
     88 {
     89     return create(document());
     90 }
     91 
     92 inline SliderThumbElement* toSliderThumbElement(Node* node)
     93 {
     94     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isHTMLElement());
     95     return static_cast<SliderThumbElement*>(node);
     96 }
     97 
     98 // This always return a valid pointer.
     99 // An assertion fails if the specified node is not a range input.
    100 SliderThumbElement* sliderThumbElementOf(Node*);
    101 HTMLElement* sliderTrackElementOf(Node*);
    102 
    103 // --------------------------------
    104 
    105 class RenderSliderThumb FINAL : public RenderBlock {
    106 public:
    107     RenderSliderThumb(SliderThumbElement*);
    108     void updateAppearance(RenderStyle* parentStyle);
    109 
    110 private:
    111     virtual bool isSliderThumb() const;
    112 };
    113 
    114 // --------------------------------
    115 
    116 class SliderContainerElement FINAL : public HTMLDivElement {
    117 public:
    118     static PassRefPtr<SliderContainerElement> create(Document*);
    119 
    120 private:
    121     SliderContainerElement(Document*);
    122     virtual RenderObject* createRenderer(RenderStyle*);
    123     virtual const AtomicString& part() const;
    124 };
    125 
    126 }
    127 
    128 #endif
    129