C++ PlatformKeyboardEvent::ctrlKey方法代码示例

KeyboardEvent::KeyboardEvent(const PlatformKeyboardEvent& key, AbstractView* view)
    : UIEventWithKeyState(eventTypeForKeyboardEventType(key.type()),
                          true, true, view, 0, key.ctrlKey(), key.altKey(), key.shiftKey(), key.metaKey())
    , m_keyEvent(adoptPtr(new PlatformKeyboardEvent(key)))
    , m_keyIdentifier(key.keyIdentifier())
    , m_keyLocation(key.isKeypad() ? DOM_KEY_LOCATION_NUMPAD : DOM_KEY_LOCATION_STANDARD) // FIXME: differentiate right/left, too
    , m_altGraphKey(false)
{
}

KeyboardEvent::KeyboardEvent(const PlatformKeyboardEvent& key, AbstractView* view)
    : UIEventWithKeyState(eventTypeForKeyboardEventType(key.type()),
                          true, true, view, 0, key.ctrlKey(), key.altKey(), key.shiftKey(), key.metaKey())
    , m_keyEvent(adoptPtr(new PlatformKeyboardEvent(key)))
    , m_keyIdentifier(key.keyIdentifier())
    , m_location(keyLocationCode(key))
    , m_altGraphKey(false)
    , m_isAutoRepeat(key.isAutoRepeat())
{
    ScriptWrappable::init(this);
}

KeyboardEvent::KeyboardEvent(const PlatformKeyboardEvent& key, AbstractView* view)
    : UIEventWithKeyState(eventTypeForKeyboardEventType(key.type()),
                          true, true, key.timestamp(), view, 0, key.ctrlKey(), key.altKey(), key.shiftKey(), key.metaKey())
    , m_keyEvent(std::make_unique<PlatformKeyboardEvent>(key))
    , m_keyIdentifier(key.keyIdentifier())
    , m_location(keyLocationCode(key))
    , m_altGraphKey(false)
#if PLATFORM(COCOA)
#if USE(APPKIT)
    , m_handledByInputMethod(key.handledByInputMethod())
    , m_keypressCommands(key.commands())
#else
    , m_handledByInputMethod(false)
#endif
#endif
{
}

static void handleKeyPress(Frame& frame, KeyboardEvent& event, const PlatformKeyboardEvent& platformEvent)
{
    String commandName = interpretKeyEvent(event);

    if (!commandName.isEmpty()) {
        frame.editor().command(commandName).execute();
        event.setDefaultHandled();
        return;
    }

    // Don't insert null or control characters as they can result in unexpected behaviour
    if (event.charCode() < ' ')
        return;

    // Don't insert anything if a modifier is pressed and it has not been handled yet
    if (platformEvent.ctrlKey() || platformEvent.altKey())
        return;

    if (frame.editor().insertText(platformEvent.text(), &event))
        event.setDefaultHandled();
}

bool PopupListBox::handleKeyEvent(const PlatformKeyboardEvent& event)
{
    if (event.type() == PlatformEvent::KeyUp)
        return true;

    if (!numItems() && event.windowsVirtualKeyCode() != VKEY_ESCAPE)
        return true;

    switch (event.windowsVirtualKeyCode()) {
    case VKEY_ESCAPE:
        abandon(); // may delete this
        return true;
    case VKEY_RETURN:
        if (m_selectedIndex == -1)  {
            hidePopup();
            // Don't eat the enter if nothing is selected.
            return false;
        }
        acceptIndex(m_selectedIndex); // may delete this
        return true;
    case VKEY_UP:
    case VKEY_DOWN:
        // We have to forward only shift + up combination to focused node when
        // autofill popup. Because all characters from the cursor to the start
        // of the text area should selected when you press shift + up arrow.
        // shift + down should be the similar way to shift + up.
        if (event.modifiers() && m_popupClient->menuStyle().menuType() == PopupMenuStyle::AutofillPopup)
            m_focusedElement->dispatchKeyEvent(event);
        else if (event.windowsVirtualKeyCode() == VKEY_UP)
            selectPreviousRow();
        else
            selectNextRow();
        break;
    case VKEY_PRIOR:
        adjustSelectedIndex(-m_visibleRows);
        break;
    case VKEY_NEXT:
        adjustSelectedIndex(m_visibleRows);
        break;
    case VKEY_HOME:
        adjustSelectedIndex(-m_selectedIndex);
        break;
    case VKEY_END:
        adjustSelectedIndex(m_items.size());
        break;
    default:
        if (!event.ctrlKey() && !event.altKey() && !event.metaKey()
            && isPrintableChar(event.windowsVirtualKeyCode())
            && isCharacterTypeEvent(event))
            typeAheadFind(event);
        break;
    }

    if (m_originalIndex != m_selectedIndex) {
        // Keyboard events should update the selection immediately (but we don't
        // want to fire the onchange event until the popup is closed, to match
        // IE). We change the original index so we revert to that when the
        // popup is closed.
        if (m_settings.acceptOnAbandon)
            m_acceptedIndexOnAbandon = m_selectedIndex;

        setOriginalIndex(m_selectedIndex);
        if (m_settings.setTextOnIndexChange)
            m_popupClient->setTextFromItem(m_selectedIndex);
    }
    if (event.windowsVirtualKeyCode() == VKEY_TAB) {
        // TAB is a special case as it should select the current item if any and
        // advance focus.
        if (m_selectedIndex >= 0) {
            acceptIndex(m_selectedIndex); // May delete us.
            // Return false so the TAB key event is propagated to the page.
            return false;
        }
        // Call abandon() so we honor m_acceptedIndexOnAbandon if set.
        abandon();
        // Return false so the TAB key event is propagated to the page.
        return false;
    }

    return true;
}

KeyboardEvent::KeyboardEvent(const PlatformKeyboardEvent& key, AbstractView* view)
    : UIEventWithKeyState(eventTypeForKeyboardEventType(key.type()), true, true, view, 0, key.ctrlKey(), key.altKey(), key.shiftKey(), key.metaKey(), InputDevice::doesntFireTouchEventsInputDevice())
    , m_keyEvent(adoptPtr(new PlatformKeyboardEvent(key)))
    , m_keyIdentifier(key.keyIdentifier())
    , m_code(key.code())
    , m_key(key.key())
    , m_location(keyLocationCode(key))
    , m_isAutoRepeat(key.isAutoRepeat())
    , m_bbIsNumLock(key.bbIsNumLock())
{
    setUICreateTime(key.timestamp());
}