KeyboardModifiersState.java

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// to you under the Apache License, Version 2.0 (the
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// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
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package org.openqa.selenium.htmlunit;

import java.util.HashSet;
import java.util.Set;
import org.htmlunit.html.Keyboard;
import org.openqa.selenium.Keys;

/**
 * Holds the state of the modifier keys (Shift, ctrl, alt).
 *
 * @author Alexei Barantsev
 * @author Ahmed Ashour
 * @author Ronald Brill
 */
class KeyboardModifiersState {
    private final Set<Character> set_ = new HashSet<>();
    private boolean shiftPressed_;
    private boolean ctrlPressed_;
    private boolean altPressed_;

    public boolean isShiftPressed() {
        return shiftPressed_;
    }

    public boolean isCtrlPressed() {
        return ctrlPressed_;
    }

    public boolean isAltPressed() {
        return altPressed_;
    }

    public void storeKeyDown(final char key) {
        storeIfEqualsShift(key, true);
        storeIfEqualsCtrl(key, true);
        storeIfEqualsAlt(key, true);
        set_.add(key);
    }

    public void storeKeyUp(final char key) {
        storeIfEqualsShift(key, false);
        storeIfEqualsCtrl(key, false);
        storeIfEqualsAlt(key, false);
        set_.remove(key);
    }

    public void addToKeyboard(final Keyboard keyboard, final char ch, final boolean isPress) {
        if (HtmlUnitKeyboardMapping.isSpecialKey(ch)) {
            final int keyCode = HtmlUnitKeyboardMapping.getKeysMapping(ch);
            if (isPress) {
                keyboard.press(keyCode);
                storeKeyDown(ch);
            } else {
                keyboard.release(keyCode);
                storeKeyUp(ch);
            }
        } else {
            keyboard.type(ch);
        }
    }

    private void storeIfEqualsShift(final char key, final boolean keyState) {
        if (key == Keys.SHIFT.charAt(0)) {
            shiftPressed_ = keyState;
        }
    }

    private void storeIfEqualsCtrl(final char key, final boolean keyState) {
        if (key == Keys.CONTROL.charAt(0)) {
            ctrlPressed_ = keyState;
        }
    }

    private void storeIfEqualsAlt(final char key, final boolean keyState) {
        if (key == Keys.ALT.charAt(0)) {
            altPressed_ = keyState;
        }
    }

    boolean isPressed(final Keys keys) {
        return isPressed(keys.charAt(0));
    }

    boolean isPressed(final char ch) {
        return set_.contains(ch);
    }
}