// Copyright (c) 2012- PPSSPP Project.

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License 2.0 for more details.

// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/

// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.

#include "i18n/i18n.h"
#include "math/math_util.h"

#include "Core/Dialog/PSPOskDialog.h"
#include "Core/Util/PPGeDraw.h"
#include "Core/HLE/sceCtrl.h"
#include "Core/Reporting.h"
#include "Common/ChunkFile.h"
#include "GPU/GPUState.h"

#ifndef _WIN32
#include <ctype.h>
#include <math.h>
#endif

const int numKeyCols[OSK_KEYBOARD_COUNT] = {12, 12, 13, 13, 12, 12, 12};
const int numKeyRows[OSK_KEYBOARD_COUNT] = {4, 4, 5, 5, 5, 4, 4};

// Japanese(Kana) diacritics
static const wchar_t diacritics[2][103] =
{
	{L"かがきぎくぐけげこごさざしじすずせぜそぞただちぢつづてでとどはばぱばひびぴびふぶぷぶへべぺべほぼぽぼウヴカガキギクグケゲコゴサザシジスズセゼソゾタダチヂツヅテデトドハバパバヒビピビフブプブヘベペベホボポボ"},
	{L"はぱばぱひぴびぴふぷぶぷへぱべぱほぽぼぽハパバパヒピビピフプブプヘパベパホポボポ"}
};

// Korean(Hangul) consonant
static const wchar_t kor_cons[] = L"ㄱㄲㄴㄷㄸㄹㅁㅂㅃㅅㅆㅇㅈㅉㅊㅋㅌㅍㅎ";

// Korean(Hangul) vowels, Some bowels are not used, them will be spacing
static const wchar_t kor_vowel[] = L"ㅏㅐㅑㅒㅓㅔㅕㅖㅗ   ㅛㅜ   ㅠㅡ ㅣ";

// Korean(Hangul) vowel Combination key
const int kor_vowelCom[] = {0,8,9,1,8,10,20,8,11,4,13,14,5,13,15,20,13,16,20,18,19};

// Korean(Hangul) last consonant(diacritics)
static const wchar_t kor_lcons[] = L"ㄱㄲㄳㄴㄵㄶㄷㄹㄺㄻㄼㄽㄾㄿㅀㅁㅂㅄㅅㅆㅇㅈㅊㅋㅌㅍㅎ";

// Korean(Hangul) last consonant Combination key
const int kor_lconsCom[] = {18,0,2,21,3,4,26,3,5,0,7,8,15,7,9,16,7,10,18,7,11,24,7,12,25,7,13,26,7,14,18,16,17};

// Korean(Hangul) last consonant Separation key
const int kor_lconsSpr[] = {2,1,9,4,4,12,5,4,18,8,8,0,9,8,6,10,8,7,11,8,9,12,8,16,13,8,17,14,8,18,17,17,9};

static const wchar_t oskKeys[OSK_KEYBOARD_COUNT][5][14] =
{
	{
		// Latin Lowercase
		{L"1234567890-+"},
		{L"qwertyuiop[]"},
		{L"asdfghjkl;@~"},
		{L"zxcvbnm,./?\\"},
	},
	{
		// Latin Uppercase
		{L"!@#$%^&*()_+"},
		{L"QWERTYUIOP{}"},
		{L"ASDFGHJKL:\"`"},
		{L"ZXCVBNM<>/?|"},
	},
	{
		// Hiragana
		{L"あかさたなはまやらわぁゃっ"},
		{L"いきしちにひみ　り　ぃ　　"},
		{L"うくすつぬふむゆるをぅゅ˝"},
		{L"えけせてねへめ　れ　ぇ　˚"},
		{L"おこそとのほもよるんぉょ　"},
	},
	{
		// Katakana
		{L"アカサタナハマヤラワァャッ"},
		{L"イキシチニヒミ　リ　ィ　　"},
		{L"ウクスツヌフムユルヲゥュ˝"},
		{L"エケセテネヘメ　レ　ェ　˚"},
		{L"オコソトノホモヨルンォョ　"},
	},
	{
		// Korean(Hangul)
		{L"1234567890-+"},
		{L"ㅃㅉㄸㄲㅆ!@#$%^&"},
		{L"ㅂㅈㄷㄱㅅㅛㅕㅑㅐㅔ[]"},
		{L"ㅁㄴㅇㄹㅎㅗㅓㅏㅣ;@~"},
		{L"ㅋㅌㅊㅍㅠㅜㅡ<>/?|"},
	},
	{
		// Russian Lowercase
		{L"1234567890-+"},
		{L"йцукенгшщзхъ"},
		{L"фывапролджэё"},
		{L"ячсмитьбю/?|"},
	},
	{
		// Russian Uppercase
		{L"!@#$%^&*()_+"},
		{L"ЙЦУКЕНГШЩЗХЪ"},
		{L"ФЫВАПРОЛДЖЭЁ"},
		{L"ЯЧСМИТЬБЮ/?|"},
	},
};


PSPOskDialog::PSPOskDialog() : PSPDialog() {
	// This can break all kinds of stuff, changing the decimal point in sprintf for example.
	// Not sure what the intended effect is so commented out for now.
	// setlocale(LC_ALL, "");
}

PSPOskDialog::~PSPOskDialog() {
}

void PSPOskDialog::ConvertUCS2ToUTF8(std::string& _string, const PSPPointer<u16> em_address)
{
	if (!em_address.Valid())
	{
		_string = "";
		return;
	}

	char stringBuffer[2048];
	char *string = stringBuffer;

	auto input = em_address;
	int c;
	while ((c = *input++) != 0)
	{
		if (c < 0x80)
			*string++ = c;
		else if (c < 0x800) {
			*string++ = 0xC0 | (c >> 6);
			*string++ = 0x80 | (c & 0x3F);
		} else {
			*string++ = 0xE0 | (c >> 12);
			*string++ = 0x80 | ((c >> 6) & 0x3F);
			*string++ = 0x80 | (c & 0x3F);
		}
	}
	*string++ = '\0';
	_string = stringBuffer;
}

void PSPOskDialog::ConvertUCS2ToUTF8(std::string& _string, const wchar_t *input)
{
	char stringBuffer[2048];
	char *string = stringBuffer;

	int c;
	while ((c = *input++) != 0)
	{
		if (c < 0x80)
			*string++ = c;
		else if (c < 0x800) {
			*string++ = 0xC0 | (c >> 6);
			*string++ = 0x80 | (c & 0x3F);
		} else {
			*string++ = 0xE0 | (c >> 12);
			*string++ = 0x80 | ((c >> 6) & 0x3F);
			*string++ = 0x80 | (c & 0x3F);
		}
	}
	*string++ = '\0';
	_string = stringBuffer;
}

int PSPOskDialog::Init(u32 oskPtr)
{
	// Ignore if already running
	if (status != SCE_UTILITY_STATUS_NONE && status != SCE_UTILITY_STATUS_SHUTDOWN)
		return SCE_ERROR_UTILITY_INVALID_STATUS;
	// Seems like this should crash?
	if (!Memory::IsValidAddress(oskPtr))
	{
		ERROR_LOG_REPORT(HLE, "sceUtilityOskInitStart: invalid params (%08x)", oskPtr);
		return -1;
	}

	oskParams = oskPtr;
	if (oskParams->base.size != sizeof(SceUtilityOskParams))
	{
		ERROR_LOG(HLE, "sceUtilityOskInitStart: invalid size (%d)", oskParams->base.size);
		return SCE_ERROR_UTILITY_INVALID_PARAM_SIZE;
	}
	// Also seems to crash.
	if (!oskParams->fields.Valid())
	{
		ERROR_LOG_REPORT(HLE, "sceUtilityOskInitStart: invalid field data (%08x)", oskParams->fields.ptr);
		return -1;
	}

	if (oskParams->unk_60 != 0)
		WARN_LOG_REPORT(HLE, "sceUtilityOskInitStart: unknown param is non-zero (%08x)", oskParams->unk_60);
	if (oskParams->fieldCount != 1)
		WARN_LOG_REPORT(HLE, "sceUtilityOskInitStart: unsupported field count %d", oskParams->fieldCount);

	status = SCE_UTILITY_STATUS_INITIALIZE;
	selectedChar = 0;
	currentKeyboard = OSK_KEYBOARD_LATIN_LOWERCASE;

	ConvertUCS2ToUTF8(oskDesc, oskParams->fields[0].desc);
	ConvertUCS2ToUTF8(oskIntext, oskParams->fields[0].intext);
	ConvertUCS2ToUTF8(oskOuttext, oskParams->fields[0].outtext);

	i_level = 0;

	inputChars = L"";

	if (oskParams->fields[0].intext.Valid()) {
		auto src = oskParams->fields[0].intext;
		int c;
		while ((c = *src++) != 0)
			inputChars += c;
	}

	// Eat any keys pressed before the dialog inited.
	__CtrlReadLatch();

	StartFade(true);
	return 0;
}

std::wstring PSPOskDialog::CombinationKorean(bool isInput)
{
	std::wstring string;

	isCombinated = true;

	int selectedRow = selectedChar / numKeyCols[currentKeyboard];
	int selectedCol = selectedChar % numKeyCols[currentKeyboard];

	if(inputChars.size() == 0) {
		wchar_t sw = oskKeys[currentKeyboard][selectedRow][selectedCol];

		if (inputChars.size() < FieldMaxLength()) {
			string += sw;

			i_value[0] = GetIndex(kor_cons, sw);

			if(i_value[0] != -1 && isInput == true)
				i_level = 1;
		} else {
			isCombinated = false;
		}
	} else {
		for(u32 i = 0; i < inputChars.size(); i++) {
			if(i + 1 == inputChars.size()) {
				wchar_t sw = oskKeys[currentKeyboard][selectedRow][selectedCol];

				if(i_level == 0) {
					string += inputChars[i];
					if (inputChars.size() < FieldMaxLength()) {
						string += sw;

						i_value[0] = GetIndex(kor_cons, sw);

						if(i_value[0] != -1 && isInput == true)
							i_level = 1;
					} else {
						isCombinated = false;
					}
				} else if(i_level == 1) {
					i_value[1] = GetIndex(kor_vowel, sw);

					if(i_value[1] == -1) {
						string += inputChars[i];
						if (inputChars.size() < FieldMaxLength()) {
							string += sw;

							if(isInput == true) {
								i_value[0] = GetIndex(kor_cons, sw);

								if(i_value[0] != -1)
									i_level = 1;
								else
									i_level = 0;
							}
						} else {
							isCombinated = false;
						}
					} else {
						u16 code = 0xAC00 + i_value[0] * 0x24C + i_value[1] * 0x1C;
						string += code;

						if(isInput == true) {
							i_level = 2;
						}
					}
				} else if(i_level == 2) {
					int tmp = GetIndex(kor_vowel, sw);
					if(tmp != -1) {
						int tmp2 = -1;
						for(size_t j = 0; j < sizeof(kor_vowelCom) / 4; j+=3) {
							if(kor_vowelCom[j] == tmp && kor_vowelCom[j + 1] == i_value[1]) {
								tmp2 = kor_vowelCom[j + 2];
								break;
							}
						}
						if(tmp2 != -1) {
							if(isInput == true) {
								i_value[1] = tmp2;
							}

							u16 code = 0xAC00 + i_value[0] * 0x24C + tmp2 * 0x1C;

							string += code;
						} else {
							string += inputChars[i];
							if (inputChars.size() < FieldMaxLength()) {
								string += sw;

								if(isInput == true) {
									i_level = 0;
								}
							} else {
								isCombinated = false;
							}
						}
					} else {
						int tmp = GetIndex(kor_lcons, sw);

						if(tmp == -1) {
							string += inputChars[i];
							if (inputChars.size() < FieldMaxLength()) {
								string += sw;

								if(isInput == true) {
									i_value[0] = GetIndex(kor_cons, sw);

									if(i_value[0] != -1)
										i_level = 1;
									else
										i_level = 0;
								}
							} else {
								isCombinated = false;
							}
						} else {
							u16 code = 0xAC00 + i_value[0] * 0x24C + i_value[1] * 0x1C + tmp + 1;

							string += code;

							if(isInput == true) {
								i_level = 3;
								i_value[2] = tmp;
							}
						}
					}
				} else if(i_level == 3) {
					int tmp = GetIndex(kor_lcons, sw);
					if(tmp != -1) {
						int tmp2 = -1;
						for(size_t j = 0; j < sizeof(kor_lconsCom) / 4; j+=3) {
							if(kor_lconsCom[j] == tmp && kor_lconsCom[j + 1] == i_value[2]) {
								tmp2 = kor_lconsCom[j + 2];
								break;
							}
						}
						if(tmp2 != -1) {
							if(isInput == true) {
								i_value[2] = tmp2;
							}

							u16 code = 0xAC00 + i_value[0] * 0x24C + tmp2 * 0x1C + i_value[2] + 1;

							string += code;
						} else {
							string += inputChars[i];
							if (inputChars.size() < FieldMaxLength()) {
								string += sw;

								if(isInput == true) {
									i_value[0] = GetIndex(kor_cons, sw);

									if(i_value[0] != -1)
										i_level = 1;
									else
										i_level = 0;
								}
							} else {
								isCombinated = false;
							}
						}
					} else {
						int tmp = GetIndex(kor_vowel, sw);
						if(tmp == -1) {
							string += inputChars[i];
							if (inputChars.size() < FieldMaxLength()) {
								string += sw;

								if(isInput == true) {
									i_value[0] = GetIndex(kor_cons, sw);

									if(i_value[0] != -1)
										i_level = 1;
									else
										i_level = 0;
								}
							} else {
								isCombinated = false;
							}
						} else {
							if (inputChars.size() < FieldMaxLength()) {
								int tmp2 = -1;
								for(size_t j = 0; j < sizeof(kor_lconsSpr) / 4; j+=3) {
									if(kor_lconsSpr[j] == i_value[2]) {
										tmp2 = (int)j;
										break;
									}
								}
								if(tmp2 != -1) {
									u16 code = 0xAC00 + i_value[0] * 0x24C + i_value[1] * 0x1C + kor_lconsSpr[tmp2 + 1];
									string += code;

									code = 0xAC00 + kor_lconsSpr[tmp2 + 2] * 0x24C + tmp * 0x1C;
									string += code;

									if(isInput == true) {
										i_value[0] = kor_lconsSpr[tmp2 + 2];
										i_value[1] = tmp;
										i_level = 2;
									}
								} else {
									int tmp2 = GetIndex(kor_cons, kor_lcons[i_value[2]]);

									if(tmp2 != -1) {
										u16 code = 0xAC00 + i_value[0] * 0x24C + i_value[1] * 0x1C;

										string += code;

										code = 0xAC00 + tmp2 * 0x24C + tmp * 0x1C;

										string += code;

										if(isInput == true) {
											i_value[0] = tmp2;
											i_value[1] = tmp;
											i_level = 2;
										}
									} else {
										string += inputChars[i];
										string += sw;

										if(isInput == true) {
											i_level = 0;
										}
									}
								}
							} else {
								string += inputChars[i];
								isCombinated = false;
							}
						}
					}
				}
			} else {
				string += inputChars[i];
			}
		}
	}

	return string;
}

std::wstring PSPOskDialog::CombinationString(bool isInput)
{
	std::wstring string;

	isCombinated = false;

	int selectedRow = selectedChar / numKeyCols[currentKeyboard];
	int selectedCol = selectedChar % numKeyCols[currentKeyboard];

	if(currentKeyboard == OSK_KEYBOARD_KOREAN)
	{
		string = CombinationKorean(isInput);
	}
	else
	{
		if(isInput == true)
		{
			i_level = 0;
		}

		if(oskKeys[currentKeyboard][selectedRow][selectedCol] == L'˝')
		{
			for(u32 i = 0; i < inputChars.size(); i++)
			{
				if(i + 1 == inputChars.size())
				{
					for(u32 j = 0; j < wcslen(diacritics[0]); j+=2)
					{
						if(inputChars[i] == diacritics[0][j])
						{
							string += diacritics[0][j + 1];
							isCombinated = true;
							break;
						}
					}

					if(isCombinated == false)
					{
						string += inputChars[i];
					}
				}
				else
				{
					string += inputChars[i];
				}
			}
		}
		else if(oskKeys[currentKeyboard][selectedRow][selectedCol] == L'˚')
		{
			for(u32 i = 0; i < inputChars.size(); i++)
			{
				if(i + 1 == inputChars.size())
				{
					for(u32 j = 0; j < wcslen(diacritics[1]); j+=2)
					{
						if(inputChars[i] == diacritics[1][j])
						{
							string += diacritics[1][j + 1];
							isCombinated = true;
							break;
						}
					}

					if(isCombinated == false)
					{
						string += inputChars[i];
					}
				}
				else
				{
					string += inputChars[i];
				}
			}
		}
		else
		{
			for(u32 i = 0; i < inputChars.size(); i++)
			{
				string += inputChars[i];
			}

			if (string.size() < FieldMaxLength())
			{
				string += oskKeys[currentKeyboard][selectedRow][selectedCol];
			}
			isCombinated = true;
		}
	}

	return string;
}

void PSPOskDialog::RemoveKorean()
{
	if(i_level == 1)
	{
		i_level = 0;
	}
	else if(i_level == 2)
	{
		int tmp = -1;
		for(size_t i = 2; i < sizeof(kor_vowelCom) / 4; i+=3)
		{
			if(kor_vowelCom[i] == i_value[1])
			{
				tmp = kor_vowelCom[i - 1];
				break;
			}
		}

		if(tmp != -1)
		{
			i_value[1] = tmp;
			u16 code = 0xAC00 + i_value[0] * 0x24C + i_value[1] * 0x1C;
			inputChars += code;
		}
		else
		{
			i_level = 1;
			inputChars += kor_cons[i_value[0]];;
		}
	}
	else if(i_level == 3)
	{
		int tmp = -1;
		for(size_t i = 2; i < sizeof(kor_lconsCom) / 4; i+=3)
		{
			if(kor_lconsCom[i] == i_value[2])
			{
				tmp = kor_lconsCom[i - 1];
				break;
			}
		}

		if(tmp != -1)
		{
			i_value[2] = tmp;
			u16 code = 0xAC00 + i_value[0] * 0x24C + i_value[1] * 0x1C + i_value[2] + 1;
			inputChars += code;
		}
		else
		{
			i_level = 2;
			u16 code = 0xAC00 + i_value[0] * 0x24C + i_value[1] * 0x1C;
			inputChars += code;
		}
	}
}

int PSPOskDialog::GetIndex(const wchar_t* src, wchar_t ch)
{
	for(int i = 0, end = (int)wcslen(src); i < end; i++)
	{
		if(src[i] == ch)
		{
			return i;
		}
	}

	return -1;
}

u32 PSPOskDialog::FieldMaxLength()
{
	if (oskParams->fields[0].outtextlimit > oskParams->fields[0].outtextlength - 1 || oskParams->fields[0].outtextlimit == 0)
		return oskParams->fields[0].outtextlength - 1;
	return oskParams->fields[0].outtextlimit;
}

void PSPOskDialog::RenderKeyboard()
{
	int selectedRow = selectedChar / numKeyCols[currentKeyboard];
	int selectedCol = selectedChar % numKeyCols[currentKeyboard];

	wchar_t temp[2];
	temp[1] = '\0';

	std::string buffer;

	u32 limit = FieldMaxLength();

	const float keyboardLeftSide = (480.0f - (24.0f * numKeyCols[currentKeyboard])) / 2.0f;
	const float characterWidth = 12.0f;
	float previewLeftSide = (480.0f - (12.0f * limit)) / 2.0f;
	float title = (480.0f - (0.5f * limit)) / 2.0f;


	PPGeDrawText(oskDesc.c_str(), title , 20, PPGE_ALIGN_CENTER, 0.5f, CalcFadedColor(0xFFFFFFFF));

	std::wstring result;

	result = CombinationString(false);

	for (u32 i = 0; i < limit; ++i)
	{
		u32 color = CalcFadedColor(0xFFFFFFFF);
		if (i + 1 < result.size())
		{
			temp[0] = result[i];
			ConvertUCS2ToUTF8(buffer, temp);
			PPGeDrawText(buffer.c_str(), previewLeftSide + (i * characterWidth), 40.0f, PPGE_ALIGN_HCENTER, 0.5f, color);
		}
		else
		{
			if (i + 1 == result.size())
			{
				temp[0] = result[i];

				if(isCombinated == true)
				{
					float animStep = (float)(gpuStats.numFrames % 40) / 20.0f;
					// Fade in and out the next character so they know it's not part of the string yet.
					u32 alpha = (0.5f - (cosf(animStep * M_PI) / 2.0f)) * 128 + 127;
					color = CalcFadedColor((alpha << 24) | 0xFFFFFF);

					ConvertUCS2ToUTF8(buffer, temp);

					PPGeDrawText(buffer.c_str(), previewLeftSide + (i * characterWidth), 40.0f, PPGE_ALIGN_HCENTER, 0.5f, color);

					// Also draw the underline for the same reason.
					color = CalcFadedColor(0xFFFFFFFF);
					PPGeDrawText("_", previewLeftSide + (i * characterWidth), 40.0f, PPGE_ALIGN_HCENTER, 0.5f, color);
				}
				else
				{
					ConvertUCS2ToUTF8(buffer, temp);
					PPGeDrawText(buffer.c_str(), previewLeftSide + (i * characterWidth), 40.0f, PPGE_ALIGN_HCENTER, 0.5f, color);
				}
			}
			else
			{
				PPGeDrawText("_", previewLeftSide + (i * characterWidth), 40.0f, PPGE_ALIGN_HCENTER, 0.5f, color);
			}
		}
	}

	for (int row = 0; row < numKeyRows[currentKeyboard]; ++row)
	{
		for (int col = 0; col < numKeyCols[currentKeyboard]; ++col)
		{
			u32 color = CalcFadedColor(0xFFFFFFFF);
			if (selectedRow == row && col == selectedCol)
				color = CalcFadedColor(0xFF3060FF);

			temp[0] = oskKeys[currentKeyboard][row][col];

			ConvertUCS2ToUTF8(buffer, temp);
			PPGeDrawText(buffer.c_str(), keyboardLeftSide + (25.0f * col) + characterWidth / 2.0, 70.0f + (25.0f * row), PPGE_ALIGN_HCENTER, 0.6f, color);

			if (selectedRow == row && col == selectedCol)
				PPGeDrawText("_", keyboardLeftSide + (25.0f * col) + characterWidth / 2.0, 70.0f + (25.0f * row), PPGE_ALIGN_HCENTER, 0.6f, CalcFadedColor(0xFFFFFFFF));
		}
	}
}

int PSPOskDialog::Update()
{
	buttons = __CtrlReadLatch();
	int selectedRow = selectedChar / numKeyCols[currentKeyboard];
	int selectedExtra = selectedChar % numKeyCols[currentKeyboard];

	u32 limit = FieldMaxLength();

	if (status == SCE_UTILITY_STATUS_INITIALIZE)
	{
		status = SCE_UTILITY_STATUS_RUNNING;
	}
	else if (status == SCE_UTILITY_STATUS_RUNNING)
	{		
		UpdateFade();

		StartDraw();
		RenderKeyboard();
		PPGeDrawImage(I_CROSS, 30, 220, 20, 20, 0, CalcFadedColor(0xFFFFFFFF));
		PPGeDrawImage(I_CIRCLE, 150, 220, 20, 20, 0, CalcFadedColor(0xFFFFFFFF));
		//PPGeDrawImage(I_BUTTON, 230, 220, 50, 20, 0, CalcFadedColor(0xFFFFFFFF));
		//PPGeDrawImage(I_BUTTON, 350, 220, 55, 20, 0, CalcFadedColor(0xFFFFFFFF));

		I18NCategory *d = GetI18NCategory("Dialog");
		PPGeDrawText(d->T("Select"), 60, 220, PPGE_ALIGN_LEFT, 0.5f, CalcFadedColor(0xFFFFFFFF));
		PPGeDrawText(d->T("Delete"), 180, 220, PPGE_ALIGN_LEFT, 0.5f, CalcFadedColor(0xFFFFFFFF));
		PPGeDrawText("Start", 245, 220, PPGE_ALIGN_LEFT, 0.6f, CalcFadedColor(0xFFFFFFFF));
		PPGeDrawText(d->T("Finish"), 290, 222, PPGE_ALIGN_LEFT, 0.5f, CalcFadedColor(0xFFFFFFFF));
		PPGeDrawText("Select", 365, 220, PPGE_ALIGN_LEFT, 0.6f, CalcFadedColor(0xFFFFFFFF));
		// TODO: Show title of next keyboard?
		PPGeDrawText(d->T("Shift"), 415, 222, PPGE_ALIGN_LEFT, 0.5f, CalcFadedColor(0xFFFFFFFF));

		if (IsButtonPressed(CTRL_UP))
		{
			selectedChar -= numKeyCols[currentKeyboard];
		}
		else if (IsButtonPressed(CTRL_DOWN))
		{
			selectedChar += numKeyCols[currentKeyboard];
		}
		else if (IsButtonPressed(CTRL_LEFT))
		{
			selectedChar--;
			if (((selectedChar + numKeyCols[currentKeyboard]) % numKeyCols[currentKeyboard]) == numKeyCols[currentKeyboard] - 1)
				selectedChar += numKeyCols[currentKeyboard];
		}
		else if (IsButtonPressed(CTRL_RIGHT))
		{
			selectedChar++;
			if ((selectedChar % numKeyCols[currentKeyboard]) == 0)
				selectedChar -= numKeyCols[currentKeyboard];
		}

		selectedChar = (selectedChar + (numKeyCols[currentKeyboard] * numKeyRows[currentKeyboard])) % (numKeyCols[currentKeyboard] * numKeyRows[currentKeyboard]);

		if (IsButtonPressed(CTRL_CROSS))
		{		
			inputChars = CombinationString(true);
		}
		else if (IsButtonPressed(CTRL_SELECT))
		{
			// TODO: Limit by allowed keyboards...
			currentKeyboard = (OskKeyboardDisplay)((currentKeyboard + 1) % OSK_KEYBOARD_COUNT);

			if(selectedRow >= numKeyRows[currentKeyboard])
			{
				selectedRow = numKeyRows[currentKeyboard] - 1;
			}

			if(selectedExtra >= numKeyCols[currentKeyboard])
			{
				selectedExtra = numKeyCols[currentKeyboard] - 1;
			}

			selectedChar = selectedRow * numKeyCols[currentKeyboard] + selectedExtra;
		}
		else if (IsButtonPressed(CTRL_CIRCLE))
		{
			if (inputChars.size() > 0)
			{
				inputChars.resize(inputChars.size() - 1);
				if(i_level != 0)
				{
					RemoveKorean();
				}
			}
		}
		else if (IsButtonPressed(CTRL_START))
		{
			StartFade(false);
		}
		EndDraw();
	}
	else if (status == SCE_UTILITY_STATUS_FINISHED)
	{
		status = SCE_UTILITY_STATUS_SHUTDOWN;
	}

	u16 *outText = oskParams->fields[0].outtext;
	for (u32 i = 0, end = oskParams->fields[0].outtextlength; i < end; ++i)
	{
		u16 value = 0;
		if (i < inputChars.size())
			value = inputChars[i];
		outText[i] = value;
	}

	oskParams->base.result = 0;
	oskParams->fields[0].result = PSP_UTILITY_OSK_RESULT_CHANGED;

	return 0;
}

int PSPOskDialog::Shutdown(bool force)
{
    if (status != SCE_UTILITY_STATUS_FINISHED && !force)
        return SCE_ERROR_UTILITY_INVALID_STATUS;

    PSPDialog::Shutdown();

    return 0;
}

void PSPOskDialog::DoState(PointerWrap &p)
{
	PSPDialog::DoState(p);
	p.Do(oskParams);
	p.Do(oskDesc);
	p.Do(oskIntext);
	p.Do(oskOuttext);
	p.Do(selectedChar);
	p.Do(inputChars);
	p.DoMarker("PSPOskDialog");
}