Reviewed by Eric Seidel.

        HTMLInputElement is not controllable by assistive technologies
        https://bugs.webkit.org/show_bug.cgi?id=27941

        Test: accessibility/input-slider.html

        * WebCore.xcodeproj/project.pbxproj:
            Add AccessibilitySlider.cpp/.h

        * accessibility/AXObjectCache.cpp:
        (WebCore::AXObjectCache::getOrCreate):
            Create AccessibilitySlider and AccessibilitySliderThumb.

        * accessibility/AccessibilityObject.h:
        (WebCore::AccessibilityObject::increment):
        (WebCore::AccessibilityObject::decrement):
            Add default, do nothing, base class methods.

        * accessibility/AccessibilityRenderObject.cpp:
        (WebCore::AccessibilityRenderObject::canSetFocusAttribute):
            Correct typo.

        * accessibility/AccessibilitySlider.cpp: Added.
        (WebCore::AccessibilitySlider::AccessibilitySlider):
        (WebCore::AccessibilitySlider::create):
        (WebCore::AccessibilitySlider::children):
        (WebCore::AccessibilitySlider::addChildren):
        (WebCore::AccessibilitySlider::getAttribute):
        (WebCore::AccessibilitySlider::valueForRange):
        (WebCore::AccessibilitySlider::maxValueForRange):
        (WebCore::AccessibilitySlider::minValueForRange):
        (WebCore::AccessibilitySlider::changeValue):
        (WebCore::AccessibilitySlider::setValue):
        (WebCore::AccessibilitySlider::increment):
        (WebCore::AccessibilitySlider::decrement):
        (WebCore::AccessibilitySlider::element):
        (WebCore::AccessibilitySliderThumb::AccessibilitySliderThumb):
        (WebCore::AccessibilitySliderThumb::create):
        (WebCore::AccessibilitySliderThumb::elementRect):
        (WebCore::AccessibilitySliderThumb::size):
        * accessibility/AccessibilitySlider.h: Added.
        (WebCore::AccessibilitySlider::~AccessibilitySlider):
        (WebCore::AccessibilitySlider::roleValue):
        (WebCore::AccessibilitySlider::accessibilityIsIgnored):
        (WebCore::AccessibilitySlider::isSlider):
        (WebCore::AccessibilitySlider::canSetValueAttribute):
        (WebCore::AccessibilitySliderThumb::~AccessibilitySliderThumb):
        (WebCore::AccessibilitySliderThumb::roleValue):
        (WebCore::AccessibilitySliderThumb::accessibilityIsIgnored):
        (WebCore::AccessibilitySliderThumb::setParentObject):
        (WebCore::AccessibilitySliderThumb::parentObject):

        * accessibility/mac/AccessibilityObjectWrapper.mm:
        (RoleEntry::):
            SliderThumbRole -> NSAccessibilityValueIndicatorRole
        (-[AccessibilityObjectWrapper roleDescription]):
            Return role description for NSAccessibilitySliderRole and NSAccessibilityValueIndicatorRole.
        (-[AccessibilityObjectWrapper accessibilityAttributeValue:]):
            Minor coding style correction.
        (-[AccessibilityObjectWrapper accessibilityPerformPressAction]):
            If attachement view handles press action, don't also call object wrapper.
        (-[AccessibilityObjectWrapper accessibilityPerformIncrementAction]):
            New, call object's increment() method.
        (-[AccessibilityObjectWrapper accessibilityPerformDecrementAction]):
            New, call object's decrement() method.
        (-[AccessibilityObjectWrapper accessibilityPerformAction:]):
            Respond to NSAccessibilityIncrementAction and NSAccessibilityDecrementAction.

        * rendering/RenderSlider.cpp:
        (WebCore::RenderSlider::thumbRect):
            Factor logic out of layout so AccessibilitySliderThumb can get thumb location/size.
        (WebCore::RenderSlider::layout):
            Move code to thumbRect().
        * rendering/RenderSlider.h:

2009-08-03  Eric Carlson  <eric.carlson@apple.com>

        Reviewed by Eric Seidel.

        HTMLInputElement is not controllable by assistive technologies
        https://bugs.webkit.org/show_bug.cgi?id=27941

        Accessibility control of a slider required adding increment() and decrement()
        methods to AccessibilityObject, so expose thos methods on AccessibilityUIElement.

        * DumpRenderTree/AccessibilityUIElement.cpp:
        (incrementCallback): New, call UI element increment method.
        (decrementCallback): New, call UI element decrement method.
        (AccessibilityUIElement::getJSClass): Expose increment and decrement methods.

        * DumpRenderTree/AccessibilityUIElement.h:
        * DumpRenderTree/mac/AccessibilityUIElementMac.mm:
        (AccessibilityUIElement::increment): New, send NSAccessibilityIncrementAction to Mac wrapper.
        (AccessibilityUIElement::decrement): New, send NSAccessibilityDecrementAction to Mac wrapper.

        * DumpRenderTree/win/AccessibilityUIElementWin.cpp:
        (AccessibilityUIElement::increment): New, do nothing.
        (AccessibilityUIElement::decrement): New, do nothing.

2009-08-03  Eric Carlson  <eric.carlson@apple.com>

        Reviewed by Eric Seidel.

        HTMLInputElement is not controllable by assistive technologies
        https://bugs.webkit.org/show_bug.cgi?id=27941
        
        Add test for <input type=range> accessibility .

        * accessibility/input-slider.html: Added.
        * platform/mac/accessibility/input-slider-expected.txt: Added.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@46720 268f45cc-cd09-0410-ab3c-d52691b4dbfc