/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"

#include <gtest/gtest.h>

#include "core/editing/EditingBehavior.h"
#include "core/editing/Editor.h"
#include "core/events/EventTarget.h"
#include "core/events/KeyboardEvent.h"
#include "core/frame/Settings.h"
#include "platform/KeyboardCodes.h"
#include "public/web/WebInputEvent.h"
#include "web/WebInputEventConversion.h"

using namespace blink;

namespace {

class KeyboardTest : public testing::Test {
public:

    // Pass a WebKeyboardEvent into the EditorClient and get back the string
    // name of which editing event that key causes.
    // E.g., sending in the enter key gives back "InsertNewline".
    const char* interpretKeyEvent(
        const WebKeyboardEvent& webKeyboardEvent,
        PlatformEvent::Type keyType)
    {
        PlatformKeyboardEventBuilder evt(webKeyboardEvent);
        evt.setKeyType(keyType);
        RefPtrWillBeRawPtr<KeyboardEvent> keyboardEvent = KeyboardEvent::create(evt, 0);
        OwnPtr<Settings> settings = Settings::create();
        EditingBehavior behavior(settings->editingBehaviorType());
        return behavior.interpretKeyEvent(*keyboardEvent);
    }

    // Set up a WebKeyboardEvent KEY_DOWN event with key code and modifiers.
    void setupKeyDownEvent(WebKeyboardEvent* keyboardEvent,
                           char keyCode,
                           int modifiers)
    {
        keyboardEvent->windowsKeyCode = keyCode;
        keyboardEvent->modifiers = modifiers;
        keyboardEvent->type = WebInputEvent::KeyDown;
        keyboardEvent->text[0] = keyCode;
        keyboardEvent->setKeyIdentifierFromWindowsKeyCode();
    }

    // Like interpretKeyEvent, but with pressing down OSModifier+|keyCode|.
    // OSModifier is the platform's standard modifier key: control on most
    // platforms, but meta (command) on Mac.
    const char* interpretOSModifierKeyPress(char keyCode)
    {
        WebKeyboardEvent keyboardEvent;
#if OS(MACOSX)
        WebInputEvent::Modifiers osModifier = WebInputEvent::MetaKey;
#else
        WebInputEvent::Modifiers osModifier = WebInputEvent::ControlKey;
#endif
        setupKeyDownEvent(&keyboardEvent, keyCode, osModifier);
        return interpretKeyEvent(keyboardEvent, PlatformEvent::RawKeyDown);
    }

    // Like interpretKeyEvent, but with pressing down ctrl+|keyCode|.
    const char* interpretCtrlKeyPress(char keyCode)
    {
        WebKeyboardEvent keyboardEvent;
        setupKeyDownEvent(&keyboardEvent, keyCode, WebInputEvent::ControlKey);
        return interpretKeyEvent(keyboardEvent, PlatformEvent::RawKeyDown);
    }

    // Like interpretKeyEvent, but with typing a tab.
    const char* interpretTab(int modifiers)
    {
        WebKeyboardEvent keyboardEvent;
        setupKeyDownEvent(&keyboardEvent, '\t', modifiers);
        return interpretKeyEvent(keyboardEvent, PlatformEvent::Char);
    }

    // Like interpretKeyEvent, but with typing a newline.
    const char* interpretNewLine(int modifiers)
    {
        WebKeyboardEvent keyboardEvent;
        setupKeyDownEvent(&keyboardEvent, '\r', modifiers);
        return interpretKeyEvent(keyboardEvent, PlatformEvent::Char);
    }

    // A name for "no modifiers set".
    static const int noModifiers = 0;
};

TEST_F(KeyboardTest, TestCtrlReturn)
{
    EXPECT_STREQ("InsertNewline", interpretCtrlKeyPress(0xD));
}

TEST_F(KeyboardTest, TestOSModifierZ)
{
#if !OS(MACOSX)
    EXPECT_STREQ("Undo", interpretOSModifierKeyPress('Z'));
#endif
}

TEST_F(KeyboardTest, TestOSModifierY)
{
#if !OS(MACOSX)
    EXPECT_STREQ("Redo", interpretOSModifierKeyPress('Y'));
#endif
}

TEST_F(KeyboardTest, TestOSModifierA)
{
#if !OS(MACOSX)
    EXPECT_STREQ("SelectAll", interpretOSModifierKeyPress('A'));
#endif
}

TEST_F(KeyboardTest, TestOSModifierX)
{
#if !OS(MACOSX)
    EXPECT_STREQ("Cut", interpretOSModifierKeyPress('X'));
#endif
}

TEST_F(KeyboardTest, TestOSModifierC)
{
#if !OS(MACOSX)
    EXPECT_STREQ("Copy", interpretOSModifierKeyPress('C'));
#endif
}

TEST_F(KeyboardTest, TestOSModifierV)
{
#if !OS(MACOSX)
    EXPECT_STREQ("Paste", interpretOSModifierKeyPress('V'));
#endif
}

TEST_F(KeyboardTest, TestEscape)
{
    WebKeyboardEvent keyboardEvent;
    setupKeyDownEvent(&keyboardEvent, VKEY_ESCAPE, noModifiers);

    const char* result = interpretKeyEvent(keyboardEvent,
                                           PlatformEvent::RawKeyDown);
    EXPECT_STREQ("Cancel", result);
}

TEST_F(KeyboardTest, TestInsertTab)
{
    EXPECT_STREQ("InsertTab", interpretTab(noModifiers));
}

TEST_F(KeyboardTest, TestInsertBackTab)
{
    EXPECT_STREQ("InsertBacktab", interpretTab(WebInputEvent::ShiftKey));
}

TEST_F(KeyboardTest, TestInsertNewline)
{
    EXPECT_STREQ("InsertNewline", interpretNewLine(noModifiers));
}

TEST_F(KeyboardTest, TestInsertNewline2)
{
    EXPECT_STREQ("InsertNewline", interpretNewLine(WebInputEvent::ControlKey));
}

TEST_F(KeyboardTest, TestInsertLineBreak)
{
    EXPECT_STREQ("InsertLineBreak", interpretNewLine(WebInputEvent::ShiftKey));
}

TEST_F(KeyboardTest, TestInsertNewline3)
{
    EXPECT_STREQ("InsertNewline", interpretNewLine(WebInputEvent::AltKey));
}

TEST_F(KeyboardTest, TestInsertNewline4)
{
    int modifiers = WebInputEvent::AltKey | WebInputEvent::ShiftKey;
    const char* result = interpretNewLine(modifiers);
    EXPECT_STREQ("InsertNewline", result);
}

} // empty namespace