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      1 /*
      2  * Copyright (C) 2011 Apple 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
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     17  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     18  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     19  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     20  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     21  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "core/accessibility/AXSpinButton.h"
     28 
     29 #include "core/accessibility/AXObjectCache.h"
     30 #include "core/rendering/RenderObject.h"
     31 
     32 namespace blink {
     33 
     34 PassRefPtr<AXSpinButton> AXSpinButton::create()
     35 {
     36     return adoptRef(new AXSpinButton);
     37 }
     38 
     39 AXSpinButton::AXSpinButton()
     40     : m_spinButtonElement(0)
     41 {
     42 }
     43 
     44 AXSpinButton::~AXSpinButton()
     45 {
     46 }
     47 
     48 LayoutRect AXSpinButton::elementRect() const
     49 {
     50     ASSERT(m_spinButtonElement);
     51 
     52     if (!m_spinButtonElement || !m_spinButtonElement->renderer())
     53         return LayoutRect();
     54 
     55     return m_spinButtonElement->renderer()->absoluteFocusRingBoundingBoxRect();
     56 }
     57 
     58 void AXSpinButton::addChildren()
     59 {
     60     m_haveChildren = true;
     61 
     62     AXSpinButtonPart* incrementor = toAXSpinButtonPart(axObjectCache()->getOrCreate(SpinButtonPartRole));
     63     incrementor->setIsIncrementor(true);
     64     incrementor->setParent(this);
     65     m_children.append(incrementor);
     66 
     67     AXSpinButtonPart* decrementor = toAXSpinButtonPart(axObjectCache()->getOrCreate(SpinButtonPartRole));
     68     decrementor->setIsIncrementor(false);
     69     decrementor->setParent(this);
     70     m_children.append(decrementor);
     71 }
     72 
     73 void AXSpinButton::step(int amount)
     74 {
     75     ASSERT(m_spinButtonElement);
     76     if (!m_spinButtonElement)
     77         return;
     78 
     79     m_spinButtonElement->step(amount);
     80 }
     81 
     82 // AXSpinButtonPart
     83 
     84 AXSpinButtonPart::AXSpinButtonPart()
     85     : m_isIncrementor(false)
     86 {
     87 }
     88 
     89 PassRefPtr<AXSpinButtonPart> AXSpinButtonPart::create()
     90 {
     91     return adoptRef(new AXSpinButtonPart);
     92 }
     93 
     94 LayoutRect AXSpinButtonPart::elementRect() const
     95 {
     96     // FIXME: This logic should exist in the render tree or elsewhere, but there is no
     97     // relationship that exists that can be queried.
     98 
     99     LayoutRect parentRect = parentObject()->elementRect();
    100     if (m_isIncrementor) {
    101         parentRect.setHeight(parentRect.height() / 2);
    102     } else {
    103         parentRect.setY(parentRect.y() + parentRect.height() / 2);
    104         parentRect.setHeight(parentRect.height() / 2);
    105     }
    106 
    107     return parentRect;
    108 }
    109 
    110 bool AXSpinButtonPart::press() const
    111 {
    112     if (!m_parent || !m_parent->isSpinButton())
    113         return false;
    114 
    115     AXSpinButton* spinButton = toAXSpinButton(parentObject());
    116     if (m_isIncrementor)
    117         spinButton->step(1);
    118     else
    119         spinButton->step(-1);
    120 
    121     return true;
    122 }
    123 
    124 } // namespace blink
    125