https://bugs.webkit.org/show_bug.cgi?id=103031

Reviewed by Kent Tamura.

Source/WebCore:

This cuts out the type ahead code that will be used by HTMLSelectElement
and DateTimeSymbolicFieldElement into a TypeAhead class. This will
improve DateTimeSymbolicFieldElement type ahead which was first
character match only, by adding cycling, prefix match and index number
match.

Added tests to month-multiple-fields-keyboard-events.html.

* GNUmakefile.list.am: Added TypeAhead.{h,cpp}
* Target.pri: Ditto.
* WebCore.gypi: Ditto.
* WebCore.vcproj/WebCore.vcproj: Ditto.
* WebCore.xcodeproj/project.pbxproj: Ditto.
* CMakeLists.txt: Ditto.
* html/HTMLSelectElement.cpp:
(WebCore):
(WebCore::HTMLSelectElement::HTMLSelectElement):
(WebCore::HTMLSelectElement::indexOfSelectedOption): Returns index of current selection.
(WebCore::HTMLSelectElement::optionCount): Returns total number of options.
(WebCore::HTMLSelectElement::optionAtIndex): Returns option at index.
(WebCore::HTMLSelectElement::typeAheadFind): Use TypeAhead.
* html/HTMLSelectElement.h:
(HTMLSelectElement):
* html/TypeAhead.cpp: Added.
(WebCore):
(WebCore::TypeAhead::TypeAhead):
(WebCore::stripLeadingWhiteSpace): Moved from HTMLSelectElement.cpp.
(WebCore::TypeAhead::handleEvent): Returns index for match.
* html/TypeAhead.h: Added.
(WebCore):
(TypeAheadDataSource): Provide the data about the options that TypeAhead should match against.
(TypeAhead):
* html/shadow/DateTimeSymbolicFieldElement.cpp:
(WebCore::DateTimeSymbolicFieldElement::DateTimeSymbolicFieldElement):
(WebCore::DateTimeSymbolicFieldElement::handleKeyboardEvent):
(WebCore::DateTimeSymbolicFieldElement::indexOfSelectedOption):
(WebCore):
(WebCore::DateTimeSymbolicFieldElement::optionCount):
(WebCore::DateTimeSymbolicFieldElement::optionAtIndex):
* html/shadow/DateTimeSymbolicFieldElement.h:
(DateTimeSymbolicFieldElement):

LayoutTests:

* fast/forms/month-multiple-fields/month-multiple-fields-keyboard-events-expected.txt:
* fast/forms/month-multiple-fields/month-multiple-fields-keyboard-events.html: Added tests for typeahead.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@136205 268f45cc-cd09-0410-ab3c-d52691b4dbfc