KeyEventIOS.mm   [plain text]

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#import "config.h"
#import "PlatformKeyboardEvent.h"

#if PLATFORM(IOS)

#import "KeyEventCocoa.h"
#import "Logging.h"
#import "NotImplemented.h"
#import "WebEvent.h"

using namespace WTF;

namespace WebCore {

static String keyIdentifierForKeyEvent(WebEvent *event)
{
    NSString *s = event.charactersIgnoringModifiers;
    if ([s length] != 1) {
        LOG(Events, "received an unexpected number of characters in key event: %u", [s length]);
        return "Unidentified";
    }

    unichar c = CFStringGetCharacterAtIndex((CFStringRef)s, 0);
    return keyIdentifierForCharCode(c);
}

PlatformKeyboardEvent::PlatformKeyboardEvent(WebEvent *event)
    : PlatformEvent(event.type == WebEventKeyUp ? PlatformEvent::KeyUp : PlatformEvent::KeyDown, event.modifierFlags & WebEventFlagMaskShift, event.modifierFlags & WebEventFlagMaskControl, event.modifierFlags & WebEventFlagMaskAlternate, event.modifierFlags & WebEventFlagMaskCommand)
    , m_text(event.characters)
    , m_unmodifiedText(event.charactersIgnoringModifiers)
    , m_keyIdentifier(keyIdentifierForKeyEvent(event))
    , m_autoRepeat(event.isKeyRepeating)
    , m_windowsVirtualKeyCode(event.keyCode)
    , m_isKeypad(false) // iPhone does not distinguish the numpad <rdar://problem/7190835>
    , m_Event(event)
{
    ASSERT(event.type == WebEventKeyDown || event.type == WebEventKeyUp);

    // Always use 13 for Enter/Return -- we don't want to use AppKit's different character for Enter.
    if (m_windowsVirtualKeyCode == '\r') {
        m_text = "\r";
        m_unmodifiedText = "\r";
    }

    // The adjustments below are only needed in backward compatibility mode, but we cannot tell what mode we are in from here.

    // Turn 0x7F into 8, because backspace needs to always be 8.
    if (m_text == "\x7F")
        m_text = "\x8";
    if (m_unmodifiedText == "\x7F")
        m_unmodifiedText = "\x8";
    // Always use 9 for tab -- we don't want to use AppKit's different character for shift-tab.
    if (m_windowsVirtualKeyCode == 9) {
        m_text = "\x9";
        m_unmodifiedText = "\x9";
    }
}

void PlatformKeyboardEvent::disambiguateKeyDownEvent(Type type, bool backwardCompatibilityMode)
{
    // Can only change type from KeyDown to RawKeyDown or Char, as we lack information for other conversions.
    ASSERT(m_type == KeyDown);
    ASSERT(type == RawKeyDown || type == Char);
    m_type = type;
    if (backwardCompatibilityMode)
        return;

    if (type == PlatformEvent::RawKeyDown) {
        m_text = String();
        m_unmodifiedText = String();
    } else {
        m_keyIdentifier = String();
        m_windowsVirtualKeyCode = 0;
        if (m_text.length() == 1 && (m_text[0U] >= 0xF700 && m_text[0U] <= 0xF7FF)) {
            // According to NSEvents.h, OpenStep reserves the range 0xF700-0xF8FF for function keys. However, some actual private use characters
            // happen to be in this range, e.g. the Apple logo (Option+Shift+K).
            // 0xF7FF is an arbitrary cut-off.
            m_text = String();
            m_unmodifiedText = String();
        }
    }
}

bool PlatformKeyboardEvent::currentCapsLockState()
{
    notImplemented();
    return false;
}

void PlatformKeyboardEvent::getCurrentModifierState(bool& shiftKey, bool& ctrlKey, bool& altKey, bool& metaKey)
{
    notImplemented();
    shiftKey = false;
    ctrlKey = false;
    altKey = false;
    metaKey = false;
}

}

#endif // PLATFORM(IOS)