/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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; either version 2
 * of the License, or (at your option) any later version.

 * 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 for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include "sherlock/journal.h"
#include "sherlock/sherlock.h"

namespace Sherlock {

#define JOURNAL_BUTTONS_Y 178
#define LINES_PER_PAGE 11

// Positioning of buttons in the journal view
const int JOURNAL_POINTS[9][3] = {
	{ 6, 68, 37 },
	{ 69, 131, 100 },
	{ 132, 192, 162 },
	{ 193, 250, 221 },
	{ 251, 313, 281 },
	{ 6, 82, 44 },
	{ 83, 159, 121 },
	{ 160, 236, 198 },
	{ 237, 313, 275 }
};

const int SEARCH_POINTS[3][3] = {
	{ 51, 123, 86 },
	{ 124, 196, 159 },
	{ 197, 269, 232 }
};

/*----------------------------------------------------------------*/

Journal::Journal(SherlockEngine *vm): _vm(vm) {
	// Initialize fields
	_maxPage = 0;
	_index = 0;
	_sub = 0;
	_up = _down = false;
	_page = 1;
	_converseNum = -1;

	// Load the journal directory and location names
	loadJournalLocations();
}

/**
 * Records statements that are said, in the order which they are said. The player
 * can then read the journal to review them
 */
void Journal::record(int converseNum, int statementNum, bool replyOnly) {
	int saveIndex = _index;
	int saveSub = _sub;

	// Record the entry into the list
	_journal.push_back(JournalEntry(converseNum, statementNum, replyOnly));
	_index = _journal.size() - 1;

	// Load the text for the new entry to get the number of lines it will have
	int newLines = loadJournalFile(true);

	// Restore old state
	_index = saveIndex;
	_sub = saveSub;

	// If new lines were added to the ournal, update the total number of lines
	// the journal continues
	if (newLines) {
		_maxPage += newLines;
	} else {
		// No lines in entry, so remove the new entry from the journal
		_journal.remove_at(_journal.size() - 1);
	}
}

/**
 * Load the list of location names that the journal will make reference to
 */
void Journal::loadJournalLocations() {
	Resources &res = *_vm->_res;

	_directory.clear();

	Common::SeekableReadStream *dir = res.load("talk.lib");
	dir->skip(4);		// Skip header

	// Get the numer of entries
	_directory.resize(dir->readUint16LE());

	// Read in each entry
	char buffer[17];
	for (uint idx = 0; idx < _directory.size(); ++idx) {
		dir->read(buffer, 17);
		buffer[16] = '\0';

		_directory[idx] = Common::String(buffer);
	}

	delete dir;

	// Load in the locations stored in journal.txt
	Common::SeekableReadStream *loc = res.load("journal.txt");

	_locations.clear();
	while (loc->pos() < loc->size()) {
		Common::String line;
		char c;
		while ((c = loc->readByte()) != 0)
			line += c;

		_locations.push_back(line);
	}

	delete loc;
}

/**
 * Loads the description for the current display index in the journal, and then
 * word wraps the result to prepare it for being displayed
 */
int Journal::loadJournalFile(bool alreadyLoaded) {
	Screen &screen = *_vm->_screen;
	Talk &talk = *_vm->_talk;
	JournalEntry &journalEntry = _journal[_index];

	Common::String dirFilename = _directory[journalEntry._converseNum];
	bool replyOnly = journalEntry._replyOnly;
	Common::String locStr(dirFilename.c_str() + 4, dirFilename.c_str() + 6);
	int newLocation = atoi(locStr.c_str());

	// If not flagged as alrady loaded, load the conversation into script variables
	if (!alreadyLoaded) {
		// See if the file to be used is already loaded
		if (journalEntry._converseNum != _converseNum) {
			// Nope. Free any previously loaded talk
			talk.freeTalkVars();

			// Find the person being talked to
			talk._talkTo = -1;
			for (int idx = 0; idx < MAX_PEOPLE; ++idx) {
				Common::String portrait = PORTRAITS[idx];
				Common::String numStr(portrait.c_str(), portrait.c_str() + 4);

				if (locStr == numStr) {
					talk._talkTo = idx;
					break;
				}
			}

			// Load the talk file
			talk.loadTalkFile(dirFilename);
		}
	}

	if (talk[0]._statement.hasPrefix("*") || talk[0]._statement.hasPrefix("^"))
		replyOnly = true;

	// If this isn't the first journal entry, see if the previous journal entry
	// was in the same scene to see if we need to include the scene header
	int oldLocation = -1;
	if (_index != 0) {
		// Get the scene number of the prior journal entry
		Common::String priorEntry = _directory[_journal[_index - 1]._converseNum];
		oldLocation = atoi(Common::String(priorEntry.c_str() + 4, priorEntry.c_str() + 6).c_str());
	}

	// Start building journal string
	Statement &statement = talk[journalEntry._statementNum];
	Common::String journalString;

	if (newLocation != oldLocation) {
		// Add in scene title
		journalString = "@" + _locations[newLocation - 1] + ":";

		// See if title can fit into a single line, or requires splitting on 2 lines
		int width = screen.stringWidth(journalString.c_str() + 1);
		if (width > 230) {
			// Scan backwards from end of title to find a space between a word
			// where the width is less than the maximum allowed for the line
			const char *lineP = journalString.c_str() + journalString.size() - 1;
			while (width > 230 || *lineP != ' ')
				width -= screen.charWidth(*lineP--);

			// Split the header into two lines, and add a '@' prefix
			// to the second line as well
			journalString = Common::String(journalString.c_str(), lineP) + "\n@" +
				Common::String(lineP + 1);
		}

		// Add a newline at the end of the title
		journalString += '\n';
	}

	// If Holmes has something to say first, then take care of it
	if (!replyOnly) {
		// Handle the grammar
		journalString += "Holmes ";
		if (talk[journalEntry._statementNum]._statement.hasSuffix("?"))
			journalString += "asked ";
		else
			journalString += "said to ";

		switch (talk._talkTo) {
		case 1:
			journalString += "me";
			break;
		case 2:
			journalString += "the Inspector";
			break;
		default:
			journalString += NAMES[talk._talkTo];
			break;
		}
		journalString += ", \"";

		// Add the statement
		journalString += statement._statement;
	}

	// Handle including the reply
	bool startOfReply = true;
	bool ctrlSpace = false;
	bool commentFlag = false;
	bool commentJustPrinted = false;
	const byte *replyP = (const byte *)statement._reply.c_str();

	while (*replyP) {
		byte c = *replyP++;

		// Is it a control character?
		if (c < 128) {
			// Nope. Set flag for allowing control coes to insert spaces
			ctrlSpace = true;
			assert(c >= ' ');

			// Check for embedded comments
			if (c == '{' || c == '}') {
				// Comment characters. If we're starting a comment and there's
				// already text displayed, add a closing quote
				if (c == '{' && !startOfReply && !commentJustPrinted)
					journalString += '"';

				// If a reply isn't just being started, and we didn't just end
				// a comment (which would have added a line), add a carriage return
				if (!startOfReply && ((!commentJustPrinted && c == '{') || c == '}'))
					journalString += '\n';
				startOfReply = false;

				// Handle setting or clearing comment state
				if (c == '{') {
					commentFlag = true;
					commentJustPrinted = false;
				} else {
					commentFlag = false;
					commentJustPrinted = true;
				}
			} else {
				if (startOfReply) {
					if (!replyOnly) {
						journalString += "\"\n";

						if (talk._talkTo == 1)
							journalString += "I replied, \"";
						else
							journalString += "The reply was, \"";
					} else {
						if (talk._talkTo == 1)
							journalString += "I";
						else if (talk._talkTo == 2)
							journalString += "The Inspector";
						else
							journalString += NAMES[talk._talkTo];

						const byte *strP = replyP + 1;
						byte v;
						do {
							v = *strP++;
						} while (v && (v < 128) && (v != '.') && (v != '!') && (v != '?'));

						if (v == '?')
							journalString += " asked, \"";
						else
							journalString += " said, \"";
					}

					startOfReply = false;
				}

				// Copy text from the place until either the reply ends, a comment
				// {} block is started, or a control character is encountered
				journalString += c;
				do {
					journalString += *replyP++;
				} while (*replyP && *replyP < 128 && *replyP != '{' && *replyP != '}');

				commentJustPrinted = false;
			}
		} else if (c == 128) {
			if (!startOfReply) {
				if (!commentFlag && !commentJustPrinted)
					journalString += "\"\n";

				journalString += "Then ";
				commentFlag = false;
			} else if (!replyOnly) {
				journalString += "\"\n";
			}

			startOfReply = false;
			c = *replyP++ - 1;

			if (c == 0)
				journalString += "Holmes";
			else if (c == 1)
				journalString += "I";
			else if (c == 2)
				journalString += "the Inspector";
			else
				journalString += NAMES[c];

			const byte *strP = replyP;
			byte v;
			do {
				v = *strP++;
			} while (v && v < 128 && v != '.' && v != '!' && v != '?');

			if (v == '?')
				journalString += " asked, \"";
			else
				journalString += " said, \"";
		} else {
			// Control code, so move past it and any parameters
			switch (c) {
			case RUN_CANIMATION:
			case ASSIGN_PORTRAIT_LOCATION:
			case PAUSE:
			case PAUSE_WITHOUT_CONTROL:
			case WALK_TO_CANIMATION:
				// These commands have a single parameter
				++replyP;
				break;

			case ADJUST_OBJ_SEQUENCE:
				replyP += (replyP[0] & 127) + replyP[1] + 2;
				break;

			case WALK_TO_COORDS:
			case MOVE_MOUSE:
				replyP += 4;
				break;

			case SET_FLAG:
			case IF_STATEMENT:
				replyP += 2;
				break;

			case SFX_COMMAND:
			case PLAY_PROLOGUE:
			case CALL_TALK_FILE:
				replyP += 8;
				break;

			case TOGGLE_OBJECT:
			case ADD_ITEM_TO_INVENTORY:
			case SET_OBJECT:
			case DISPLAY_INFO_LINE:
			case REMOVE_ITEM_FROM_INVENTORY:
				replyP += (*replyP & 127) + 1;
				break;

			case GOTO_SCENE:
				replyP += 5;
				break;

			case CARRIAGE_RETURN:
				journalString += "\n";
				break;

			default:
				break;
			}

			// Put a space in the output for a control character, unless it's
			// immediately coming after another control character
			if (ctrlSpace && c != 130 && c != 161 && !commentJustPrinted) {
				journalString += " ";
				ctrlSpace = false;
			}
		}
	}

	if (!startOfReply && !commentJustPrinted)
		journalString += '"';

	// Finally finished building the journal text. Need to process the text to
	// word wrap it to fit on-screen. The resulting lines are stored in the
	// _lines array
	_lines.clear();

	while (!journalString.empty()) {
		const char *startP = journalString.c_str();

		// If the first character is a '@' flagging a title line, then move
		// past it, so the @ won't be included in the line width calculation
		if (*startP == '@')
			++startP;

		// Build up chacters until a full line is found
		int width = 0;
		const char *endP = startP;
		while (width < 230 && *endP && *endP != '\n' && (endP - startP) < 79)
			width += screen.charWidth(*endP++);

		// If word wrapping, move back to end of prior word
		if (width >= 230 || (endP - startP) >= 79) {
			while (*--endP != ' ')
				;
		}

		// Add in the line
		_lines.push_back(Common::String(journalString.c_str(), endP));

		// Strip line off from string being processed
		journalString = *endP ? Common::String(endP + 1) : "";
	}

	// Add a blank line at the end of the text as long as text was present
	if (!startOfReply) {
		_lines.push_back("");
	} else {
		_lines.clear();
	}

	return _lines.size();
}

/**
 * Draw the journal frame
 */
void Journal::drawJournal() {
	Resources &res = *_vm->_res;
	Screen &screen = *_vm->_screen;
	byte palette[PALETTE_SIZE];

	// Load in the journal background
	Common::SeekableReadStream *bg = res.load("journal.lbv");
	bg->read(screen._backBuffer1.getPixels(), SHERLOCK_SCREEN_WIDTH * SHERLOCK_SCREEN_HEIGHT);
	bg->read(palette, PALETTE_SIZE);
	delete bg;

	// Translate the palette for display
	for (int idx = 0; idx < PALETTE_SIZE; ++idx)
		palette[idx] = VGA_COLOR_TRANS(palette[idx]);

	// Set the palette and print the title
	screen.setPalette(palette);
	screen.gPrint(Common::Point(111, 18), BUTTON_BOTTOM, "Watson's Journal");
	screen.gPrint(Common::Point(110, 17), INV_FOREGROUND, "Watson's Journal");

	// Draw the buttons
	screen.makeButton(Common::Rect(JOURNAL_POINTS[0][0], JOURNAL_BUTTONS_Y,
		JOURNAL_POINTS[0][1], JOURNAL_BUTTONS_Y + 10),
		JOURNAL_POINTS[0][2] - screen.stringWidth("Exit") / 2, "Exit");
	screen.makeButton(Common::Rect(JOURNAL_POINTS[1][0], JOURNAL_BUTTONS_Y,
		JOURNAL_POINTS[1][1], JOURNAL_BUTTONS_Y + 10),
		JOURNAL_POINTS[1][2] - screen.stringWidth("Back 10") / 2, "Back 10");
	screen.makeButton(Common::Rect(JOURNAL_POINTS[2][0], JOURNAL_BUTTONS_Y,
		JOURNAL_POINTS[2][1], JOURNAL_BUTTONS_Y + 10),
		JOURNAL_POINTS[2][2] - screen.stringWidth("Up") / 2, "Up");
	screen.makeButton(Common::Rect(JOURNAL_POINTS[3][0], JOURNAL_BUTTONS_Y,
		JOURNAL_POINTS[3][1], JOURNAL_BUTTONS_Y + 10),
		JOURNAL_POINTS[3][2] - screen.stringWidth("Down") / 2, "Down");
	screen.makeButton(Common::Rect(JOURNAL_POINTS[4][0], JOURNAL_BUTTONS_Y,
		JOURNAL_POINTS[4][1], JOURNAL_BUTTONS_Y + 10),
		JOURNAL_POINTS[4][2] - screen.stringWidth("Ahead 10") / 2, "Ahead 10");
	screen.makeButton(Common::Rect(JOURNAL_POINTS[5][0], JOURNAL_BUTTONS_Y + 11,
		JOURNAL_POINTS[5][1], JOURNAL_BUTTONS_Y + 21),
		JOURNAL_POINTS[5][2] - screen.stringWidth("Search") / 2, "Search");
	screen.makeButton(Common::Rect(JOURNAL_POINTS[6][0], JOURNAL_BUTTONS_Y + 11,
		JOURNAL_POINTS[6][1], JOURNAL_BUTTONS_Y + 21),
		JOURNAL_POINTS[6][2] - screen.stringWidth("First Page") / 2, "First Page");
	screen.makeButton(Common::Rect(JOURNAL_POINTS[7][0], JOURNAL_BUTTONS_Y + 11,
		JOURNAL_POINTS[7][1], JOURNAL_BUTTONS_Y + 21),
		JOURNAL_POINTS[7][2] - screen.stringWidth("Last Page") / 2, "Last Page");
	screen.makeButton(Common::Rect(JOURNAL_POINTS[8][0], JOURNAL_BUTTONS_Y + 11,
		JOURNAL_POINTS[8][1], JOURNAL_BUTTONS_Y + 21),
		JOURNAL_POINTS[8][2] - screen.stringWidth("Print Text") / 2, "Print Text");
}

/**
 * Display the journal
 */
void Journal::drawInterface() {
	Screen &screen = *_vm->_screen;

	drawJournal();

	if (_journal.size() == 0) {
		_up = _down = 0;
	} else {
		doJournal(0, 0);
	}

	doArrows();

	// Show the entire screen
	screen.slamArea(0, 0, SHERLOCK_SCREEN_WIDTH, SHERLOCK_SCREEN_HEIGHT);
}

/**
 * Display the arrows that can be used to scroll up and down pages
 */
void Journal::doArrows() {
	Screen &screen = *_vm->_screen;
	byte color;

	color = (_page > 1) ? COMMAND_FOREGROUND : COMMAND_NULL;
	screen.buttonPrint(Common::Point(JOURNAL_POINTS[1][2], JOURNAL_BUTTONS_Y), color, false, "Back 10");
	screen.buttonPrint(Common::Point(JOURNAL_POINTS[2][2], JOURNAL_BUTTONS_Y), color, false, "Up");

	color = _down ? COMMAND_FOREGROUND : COMMAND_NULL;
	screen.buttonPrint(Common::Point(JOURNAL_POINTS[3][2], JOURNAL_BUTTONS_Y), color, false, "Down");
	screen.buttonPrint(Common::Point(JOURNAL_POINTS[4][2], JOURNAL_BUTTONS_Y), color, false, "Ahead 10");
	screen.buttonPrint(Common::Point(JOURNAL_POINTS[7][2], JOURNAL_BUTTONS_Y + 11), color, false, "Last Page");

	color = _journal.size() > 0 ? COMMAND_FOREGROUND : COMMAND_NULL;
	screen.buttonPrint(Common::Point(JOURNAL_POINTS[5][2], JOURNAL_BUTTONS_Y + 11), color, false, "Search");
	screen.buttonPrint(Common::Point(JOURNAL_POINTS[8][2], JOURNAL_BUTTONS_Y + 11), color, false, "Print Text");

	color = _page > 1 ? COMMAND_FOREGROUND : COMMAND_NULL;
	screen.buttonPrint(Common::Point(JOURNAL_POINTS[6][2], JOURNAL_BUTTONS_Y + 11), color, false, "First Page");
}

/**
 * Displays a page of the journal at the current index
 */
bool Journal::doJournal(int direction, int howFar) {
	Events &events = *_vm->_events;
	Screen &screen = *_vm->_screen;
	int yp = 37;
	int startPage = _page;
	bool endJournal = false;
	bool firstOccurance = false;
	bool searchSuccessful = false;
	bool endFlag = false;
	int lineNum = 0;
	int maxLines;
	int savedIndex;
	int temp;
	const char *matchP;
	int width;

	_converseNum = -1;
	_down = true;

	do {
		// Get the number of lines for the current journal entry
		maxLines = loadJournalFile(false);
		if (!maxLines) {
			// Entry has no text, so it must be a stealth eny. Move onto further journal entries
			// until an entry with text is found
			if (++_index == (int)_journal.size()) {
				endJournal = true;
			} else {
				_sub = 0;
				maxLines = loadJournalFile(false);
			}
		}
	} while (!endJournal && !maxLines);

	// Check if there no further pages with text until the end of the journal
	if (endJournal) {
		// If moving forward or backwards, clear the page before printing
		if (direction)
			drawJournal();

		screen.gPrint(Common::Point(235, 21), PEN_COLOR, "Page %d", _page);
		return false;
	}

	// If the journal page is being changed, set the wait cursor
	if (direction)
		events.setCursor(WAIT);

	switch (direction) {
	case 1:
	case 4:
		// Move backwards howFar number of lines unless either the start of the journal is reached,
		// or a searched for keyword is found
		do {
			// Animate the glass mouse cursor
			int cursorNum = (int)events.getCursor() + 1;
			if (cursorNum > (WAIT + 2))
				cursorNum = WAIT;
			events.setCursor((CursorId)cursorNum);

			// Move backwards through the journal file a line at a time
			if (--_sub < 0) {
				do {
					if (--_index < 0) {
						_index = 0;
						_sub = 0;
						endJournal = true;
					}
					else {
						maxLines = loadJournalFile(false);
						_sub = maxLines - 1;
					}
				} while (!endJournal && !maxLines);
			}

			// If it's search mode, check each line for the given keyword
			if (direction >= 3 && maxLines && !endJournal && !searchSuccessful) {
				Common::String line = _lines[_sub];
				line.toUppercase();
				if (strstr(line.c_str(), _find.c_str()) != nullptr) {
					// Found a match. Reset howFar so that the start of page that the match
					// was found on will be displayed
					searchSuccessful = true;
					howFar = ((lineNum / LINES_PER_PAGE) + 1) * LINES_PER_PAGE;
				}
			}

			++lineNum;
		} while (lineNum < howFar && !endJournal);

		if (!_index && !_sub)
			_page = 1;
		else
			_page -= howFar / LINES_PER_PAGE;
		break;

	case 2:
	case 3:
		// Move howFar lines ahead unless the end of the journal is reached,
		// or a searched for keyword is found
		for (temp = 0; (temp < (howFar / LINES_PER_PAGE)) && !endJournal && !searchSuccessful; ++temp) {
			// Handle animating mouse cursor
			int cursorNum = (int)events.getCursor() + 1;
			if (cursorNum >(WAIT + 2))
				cursorNum = WAIT;
			events.setCursor((CursorId)cursorNum);

			lineNum = 0;
			savedIndex = _index;
			int savedSub = _sub;

			// Move a single page ahead
			do {
				// If in search mode, check for keyword
				if (direction >= 3 && _page != startPage) {
					Common::String line = _lines[_sub];
					line.toUppercase();
					if (strstr(line.c_str(), _find.c_str()) != nullptr)
						searchSuccessful = true;
				}

				// Move forwards a line at a time, unless search word was found
				if (!searchSuccessful) {
					if (++_sub == maxLines) {
						// Reached end of page
						do {
							if (++_index == (int)_journal.size()) {
								_index = savedIndex;
								_sub = savedSub;
								maxLines = loadJournalFile(false);
								endJournal = true;
							} else {
								_sub = 0;
								maxLines = loadJournalFile(false);
							}
						} while (!endJournal && !maxLines);
					}

					++lineNum;
				}
			} while ((lineNum < LINES_PER_PAGE) && !endJournal && !searchSuccessful);

			if (!endJournal && !searchSuccessful)
				// Move to next page
				++_page;

			if (searchSuccessful) {
				// Search found, so show top of the page it was found on
				_index = savedIndex;
				_sub = savedSub;
				maxLines = loadJournalFile(false);
			}
		}
		break;

	default:
		break;
	}

	if (direction) {
		events.setCursor(ARROW);
		drawJournal();
	}

	screen.gPrint(Common::Point(235, 21), PEN_COLOR, "Page %d", _page);

	temp = _sub;
	savedIndex = _index;
	lineNum = 0;

	do {
		bool inc = true;

		// If there wasn't any line to print at the top of the page, we won't need to
		// increment the y position
		if (_lines[temp].empty() && yp == 37)
			inc = false;

		// If there's a searched for keyword in the line, it will need to be highlighted
		if (searchSuccessful && firstOccurance) {
			// Check if line has the keyword
			Common::String line = _lines[temp];
			line.toUppercase();
			if ((matchP = strstr(line.c_str(), _find.c_str())) != nullptr) {
				matchP = _lines[temp].c_str() + (matchP - line.c_str());
				firstOccurance = false;

				// Print out the start of the line before the matching keyword
				Common::String lineStart(_lines[temp].c_str(), matchP);
				if (lineStart.hasPrefix("@")) {
					width = screen.stringWidth(lineStart.c_str() + 1);
					screen.gPrint(Common::Point(53, yp), 15, "%s", lineStart.c_str() + 1);
				} else {
					width = screen.stringWidth(lineStart.c_str());
					screen.gPrint(Common::Point(53, yp), PEN_COLOR, lineStart.c_str());
				}

				// Print out the found keyword
				Common::String lineMatch(matchP, matchP + _find.size());
				screen.gPrint(Common::Point(53 + width, yp), INV_FOREGROUND, lineMatch.c_str());
				width += screen.stringWidth(lineMatch.c_str());

				// Print remainder of line
				screen.gPrint(Common::Point(53 + width, yp), PEN_COLOR, matchP + _find.size());
			} else if (_lines[temp].hasPrefix("@")) {
				screen.gPrint(Common::Point(53, yp), 15, _lines[temp].c_str() + 1);
			} else {
				screen.gPrint(Common::Point(53, yp), PEN_COLOR, _lines[temp].c_str());
			}
		} else {
			if (_lines[temp].hasPrefix("@")) {
				screen.gPrint(Common::Point(53, yp), 15, _lines[temp].c_str() + 1);
			} else {
				screen.gPrint(Common::Point(53, yp), PEN_COLOR, _lines[temp].c_str());
			}
		}

		if (++temp == maxLines) {
			// Move to next page
			do {
				if (_index < ((int)_journal.size() - 1) && lineNum < (LINES_PER_PAGE - 1)) {
					++_index;
					maxLines = loadJournalFile(false);
					temp = 0;
				} else {
					if (_index == ((int)_journal.size() - 1))
						_down = false;
					endFlag = true;
				}
			} while (!endFlag && !maxLines);
		}

		if (inc) {
			// Move to next line
			++lineNum;
			yp += 13;
		}
	} while (lineNum < LINES_PER_PAGE && !endFlag);

	_index = savedIndex;
	_up = _index || _sub;

	return direction >= 3 && searchSuccessful;
}

/**
 * Handle events whilst the journal is being displayed
 */
bool Journal::handleEvents(int key) {
	Events &events = *_vm->_events;
	Screen &screen = *_vm->_screen;
	bool doneFlag = false;
	Common::Point pt = events.mousePos();
	byte color;
	enum Button {
		BTN_NONE, BTN_EXIT, BTN_BACK10, BTN_UP, BTN_DOWN, BTN_AHEAD110, BTN_SEARCH,
		BTN_FIRST_PAGE, BTN_LAST_PAGE, BTN_PRINT_TEXT
	};
	Button found = BTN_NONE;

	if (events._pressed || events._released) {
		// Exit button
		if (pt.x > JOURNAL_POINTS[0][0] && pt.x < JOURNAL_POINTS[0][1] && pt.y >= JOURNAL_BUTTONS_Y &&
				pt.y < (JOURNAL_BUTTONS_Y + 10)) {
			found = BTN_EXIT;
			color = COMMAND_HIGHLIGHTED;
		} else {
			color = COMMAND_FOREGROUND;
		}
		screen.buttonPrint(Common::Point(JOURNAL_POINTS[0][2], JOURNAL_BUTTONS_Y), color, true, "Exit");

		// Back 10 button
		if (pt.x > JOURNAL_POINTS[1][0] && pt.x < JOURNAL_POINTS[1][1] && pt.y >= JOURNAL_BUTTONS_Y &&
				pt.y < (JOURNAL_BUTTONS_Y + 10) && _page > 1) {
			found = BTN_BACK10;
			screen.buttonPrint(Common::Point(JOURNAL_POINTS[1][2], JOURNAL_BUTTONS_Y), COMMAND_HIGHLIGHTED, true, "Back 10");
		} else if (_page > 1) {
			screen.buttonPrint(Common::Point(JOURNAL_POINTS[1][2], JOURNAL_BUTTONS_Y), COMMAND_FOREGROUND, true, "Back 10");
		}

		// Up button
		if (pt.x > JOURNAL_POINTS[2][0] && pt.x < JOURNAL_POINTS[2][1] && pt.y >= JOURNAL_BUTTONS_Y &&
				pt.y < (JOURNAL_BUTTONS_Y + 10) && _up) {
			found = BTN_UP;
			screen.buttonPrint(Common::Point(JOURNAL_POINTS[2][2], JOURNAL_BUTTONS_Y), COMMAND_HIGHLIGHTED, true, "Up");
		} else if (_up) {
			screen.buttonPrint(Common::Point(JOURNAL_POINTS[2][2], JOURNAL_BUTTONS_Y), COMMAND_FOREGROUND, true, "Up");
		}

		// Down button
		if (pt.x > JOURNAL_POINTS[3][0] && pt.x < JOURNAL_POINTS[3][1] && pt.y >= JOURNAL_BUTTONS_Y &&
				pt.y < (JOURNAL_BUTTONS_Y + 10) && _down) {
			found = BTN_DOWN;
			screen.buttonPrint(Common::Point(JOURNAL_POINTS[3][2], JOURNAL_BUTTONS_Y), COMMAND_HIGHLIGHTED, true, "Down");
		} else if (_down) {
			screen.buttonPrint(Common::Point(JOURNAL_POINTS[3][2], JOURNAL_BUTTONS_Y), COMMAND_FOREGROUND, true, "Down");
		}

		// Ahead 10 button
		if (pt.x > JOURNAL_POINTS[4][0] && pt.x < JOURNAL_POINTS[4][1] && pt.y >= JOURNAL_BUTTONS_Y &&
				pt.y < (JOURNAL_BUTTONS_Y + 10) && _down) {
			found = BTN_AHEAD110;
			screen.buttonPrint(Common::Point(JOURNAL_POINTS[4][2], JOURNAL_BUTTONS_Y), COMMAND_HIGHLIGHTED, true, "Ahead 10");
		} else if (_down) {
			screen.buttonPrint(Common::Point(JOURNAL_POINTS[4][2], JOURNAL_BUTTONS_Y), COMMAND_FOREGROUND, true, "Ahead 10");
		}

		// Search button
		if (pt.x > JOURNAL_POINTS[5][0] && pt.x < JOURNAL_POINTS[5][1] && pt.y >= (JOURNAL_BUTTONS_Y + 11) &&
				pt.y < (JOURNAL_BUTTONS_Y + 20) && !_journal.empty()) {
			found = BTN_SEARCH;
			color = COMMAND_HIGHLIGHTED;
		} else if (_journal.empty()) {
			color = COMMAND_NULL;
		} else {
			color = COMMAND_FOREGROUND;
		}
		screen.buttonPrint(Common::Point(JOURNAL_POINTS[5][2], JOURNAL_BUTTONS_Y + 11), color, true, "Search");

		// First Page button
		if (pt.x > JOURNAL_POINTS[6][0] && pt.x < JOURNAL_POINTS[6][1] && pt.y >= (JOURNAL_BUTTONS_Y + 11) &&
				pt.y < (JOURNAL_BUTTONS_Y + 20) && _up) {
			found = BTN_FIRST_PAGE;
			color = COMMAND_HIGHLIGHTED;
		} else if (_up) {
			color = COMMAND_FOREGROUND;
		} else {
			color = COMMAND_NULL;
		}
		screen.buttonPrint(Common::Point(JOURNAL_POINTS[6][2], JOURNAL_BUTTONS_Y + 11), color, true, "First Page");

		// Last Page button
		if (pt.x > JOURNAL_POINTS[7][0] && pt.x < JOURNAL_POINTS[7][1] && pt.y >= (JOURNAL_BUTTONS_Y + 11) &&
				pt.y < (JOURNAL_BUTTONS_Y + 20) && _down) {
			found = BTN_LAST_PAGE;
			color = COMMAND_HIGHLIGHTED;
		} else if (_down) {
			color = COMMAND_FOREGROUND;
		} else {
			color = COMMAND_NULL;
		}
		screen.buttonPrint(Common::Point(JOURNAL_POINTS[7][2], JOURNAL_BUTTONS_Y + 11), color, true, "Last Page");


		// Print Text button
		if (pt.x > JOURNAL_POINTS[8][0] && pt.x < JOURNAL_POINTS[8][1] && pt.y >= (JOURNAL_BUTTONS_Y + 11) &&
				pt.y < (JOURNAL_BUTTONS_Y + 20) && !_journal.empty()) {
			found = BTN_PRINT_TEXT;
			color = COMMAND_HIGHLIGHTED;
		} else if (_journal.empty()) {
			color = COMMAND_NULL;
		} else {
			color = COMMAND_FOREGROUND;
		}
		screen.buttonPrint(Common::Point(JOURNAL_POINTS[8][2], JOURNAL_BUTTONS_Y + 11), color, true, "Print Text");
	}

	if (found == BTN_EXIT && events._released)
		// Exit button pressed
		doneFlag = true;

	if (((found == BTN_BACK10 && events._released) || key == 'B') && (_page > 1)) {
		// Scrolll up 10 pages
		if (_page < 11)
			doJournal(1, (_page - 1) * LINES_PER_PAGE);
		else
			doJournal(1, 10 * LINES_PER_PAGE);

		doArrows();
		screen.slamArea(0, 0, SHERLOCK_SCREEN_WIDTH, SHERLOCK_SCREEN_HEIGHT);
	}

	if (((found == BTN_UP && events._released) || key =='U') && _up) {
		// Scroll up
		doJournal(1, LINES_PER_PAGE);
		doArrows();
		screen.slamArea(0, 0, SHERLOCK_SCREEN_WIDTH, SHERLOCK_SCREEN_HEIGHT);
	}

	if (((found == BTN_DOWN && events._released) || key =='D') && _down) {
		// Scroll down
		doJournal(2, LINES_PER_PAGE);
		doArrows();
		screen.slamArea(0, 0, SHERLOCK_SCREEN_WIDTH, SHERLOCK_SCREEN_HEIGHT);
	}

	if (((found == BTN_AHEAD110 && events._released) || key == 'A') && _down) {
		// Scroll down 10 pages
		if ((_page + 10) > _maxPage)
			doJournal(2, (_maxPage - _page) * LINES_PER_PAGE);
		else
			doJournal(2, 10 * LINES_PER_PAGE);

		doArrows();
		screen.slamArea(0, 0, SHERLOCK_SCREEN_WIDTH, SHERLOCK_SCREEN_HEIGHT);
	}

	if (((found == BTN_SEARCH && events._released) || key == 'S') && !_journal.empty()) {
		screen.buttonPrint(Common::Point(JOURNAL_POINTS[5][2], JOURNAL_BUTTONS_Y + 11), COMMAND_FOREGROUND, true, "Search");
		bool notFound = false;


		do {
			int dir;
			if ((dir = getFindName(notFound)) != 0) {
				int savedIndex = _index;
				int savedSub = _sub;
				int savedPage = _page;

				if (doJournal(dir + 2, 1000 * LINES_PER_PAGE) == 0) {
					_index = savedIndex;
					_sub = savedSub;
					_page = savedPage;

					drawJournal();
					doJournal(0, 0);
					notFound = true;
				} else {
					doneFlag = true;
				}

				doArrows();
				screen.slamArea(0, 0, SHERLOCK_SCREEN_WIDTH, SHERLOCK_SCREEN_HEIGHT);
			} else {
				doneFlag = true;
			}
		} while (!doneFlag);
		doneFlag = false;
	}

	if (((found == BTN_FIRST_PAGE && events._released) || key == 'F') && _up) {
		// First page
		_index = _sub = 0;
		_up = _down = false;
		_page = 1;

		drawJournal();
		doJournal(0, 0);
		doArrows();
		screen.slamArea(0, 0, SHERLOCK_SCREEN_WIDTH, SHERLOCK_SCREEN_HEIGHT);
	}

	if (((found == BTN_LAST_PAGE && events._released) || key == 'L') && _down) {
		// Last page
		if ((_page + 10) > _maxPage)
			doJournal(2, (_maxPage - _page) * LINES_PER_PAGE);
		else
			doJournal(2, 1000 * LINES_PER_PAGE);

		doArrows();
		screen.slamArea(0, 0, SHERLOCK_SCREEN_WIDTH, SHERLOCK_SCREEN_HEIGHT);
	}

	events.wait(2);

	return doneFlag;
}

/**
 * Show the search submenu
 */
int Journal::getFindName(bool printError) {
	enum Button { BTN_NONE, BTN_EXIT, BTN_BACKWARD, BTN_FORWARD };

	Events &events = *_vm->_events;
	Screen &screen = *_vm->_screen;
	Talk &talk = *_vm->_talk;
	int xp;
	int yp = 174;
	bool flag = false;
	Common::String name;
	int done = 0;
	byte color;

	// Draw search panel
	screen.makePanel(Common::Rect(6, 171, 313, 199));
	screen.makeButton(Common::Rect(SEARCH_POINTS[0][0], yp, SEARCH_POINTS[0][1], yp + 10),
		SEARCH_POINTS[0][2] - screen.stringWidth("Exit") / 2, "Exit");
	screen.makeButton(Common::Rect(SEARCH_POINTS[1][0], yp, SEARCH_POINTS[1][1], yp + 10),
		SEARCH_POINTS[1][2] - screen.stringWidth("Backward") / 2, "Backward");
	screen.makeButton(Common::Rect(SEARCH_POINTS[2][0], yp, SEARCH_POINTS[2][1], yp + 10),
		SEARCH_POINTS[2][2] - screen.stringWidth("Forward") / 2, "Forward");

	screen.gPrint(Common::Point(SEARCH_POINTS[0][2] - screen.stringWidth("Exit") / 2, yp), COMMAND_FOREGROUND, "E");
	screen.gPrint(Common::Point(SEARCH_POINTS[1][2] - screen.stringWidth("Backward") / 2, yp), COMMAND_FOREGROUND, "B");
	screen.gPrint(Common::Point(SEARCH_POINTS[2][2] - screen.stringWidth("Forward") / 2, yp), COMMAND_FOREGROUND, "F");

	screen.fillRect(Common::Rect(12, 185, 307, 186), BUTTON_BOTTOM);
	screen.vLine(12, 185, 195, BUTTON_BOTTOM);
	screen.hLine(13, 195, 306, BUTTON_TOP);
	screen.hLine(306, 186, 195, BUTTON_TOP);

	if (printError) {
		screen.gPrint(Common::Point((SHERLOCK_SCREEN_WIDTH - screen.stringWidth("Text Not Found !")) / 2, 185),
			INV_FOREGROUND, "Text Not Found !");
	} else if (!_find.empty()) {
		// There's already a search term, display it already
		screen.gPrint(Common::Point(15, 185), TALK_FOREGROUND, _find.c_str());
		name = _find;
	}

	screen.slamArea(6, 171, 307, 28);

	if (printError) {
		// Give time for user to see the message
		for (int idx = 0; idx < 40 && !_vm->shouldQuit() && !events.kbHit() && !events._released; ++idx) {
			events.pollEvents();
			events.setButtonState();
			events.wait(2);
		}

		events.clearKeyboard();
		screen.fillRect(Common::Rect(13, 186, 306, 195), BUTTON_MIDDLE);

		if (!_find.empty()) {
			screen.gPrint(Common::Point(15, 185), TALK_FOREGROUND, _find.c_str());
			name = _find;
		}

		screen.slamArea(0, 0, SHERLOCK_SCREEN_WIDTH, SHERLOCK_SCREEN_HEIGHT);
	}

	xp = 15 + screen.stringWidth(name);
	yp = 186;

	do {
		events._released = false;
		Button found = BTN_NONE;

		while (!_vm->shouldQuit() && !events.kbHit() && !events._released) {
			found = BTN_NONE;
			if (talk._talkToAbort)
				return 0;

			// Check if key or mouse button press has occurred
			events.setButtonState();
			Common::Point pt = events.mousePos();

			flag = !flag;
			screen.vgaBar(Common::Rect(xp, yp, xp + 8, yp + 9), flag ? INV_FOREGROUND : BUTTON_MIDDLE);

			if (events._pressed || events._released) {
				if (pt.x > SEARCH_POINTS[0][0] && pt.x < SEARCH_POINTS[0][1] && pt.y > 174 && pt.y < 183) {
					found = BTN_EXIT;
					color = COMMAND_HIGHLIGHTED;
				} else {
					color = COMMAND_FOREGROUND;
				}
				screen.print(Common::Point(SEARCH_POINTS[0][2] - screen.stringWidth("Exit") / 2, 175), color, "Exit");

				if (pt.x > SEARCH_POINTS[1][0] && pt.x < SEARCH_POINTS[1][1] && pt.y > 174 && pt.y < 183) {
					found = BTN_BACKWARD;
					color = COMMAND_HIGHLIGHTED;
				} else {
					color = COMMAND_FOREGROUND;
				}
				screen.print(Common::Point(SEARCH_POINTS[1][2] - screen.stringWidth("Backward") / 2, 175), color, "Backward");

				if (pt.x > SEARCH_POINTS[2][0] && pt.x < SEARCH_POINTS[2][1] && pt.y > 174 && pt.y < 183) {
					found = BTN_FORWARD;
					color = COMMAND_HIGHLIGHTED;
				} else {
					color = COMMAND_FOREGROUND;
				}
				screen.print(Common::Point(SEARCH_POINTS[1][2] - screen.stringWidth("Forward") / 2, 175), color, "Forward");
			}

			events.wait(2);
		}

		if (events.kbHit()) {
			Common::KeyState keyState = events.getKey();

			if ((keyState.keycode == Common::KEYCODE_BACKSPACE) && (name.size() > 0)) {
				screen.vgaBar(Common::Rect(xp - screen.charWidth(name.lastChar()), yp, xp + 8, yp + 9), BUTTON_MIDDLE);
				xp -= screen.charWidth(name.lastChar());
				screen.vgaBar(Common::Rect(xp, yp, xp + 8, yp + 9), INV_FOREGROUND);
				name.deleteLastChar();
			}

			if (keyState.keycode == Common::KEYCODE_RETURN)
				done = 1;

			if (keyState.keycode == Common::KEYCODE_ESCAPE) {
				screen.vgaBar(Common::Rect(xp, yp, xp + 8, yp + 9), BUTTON_MIDDLE);
				done = -1;
			}

			if (keyState.keycode >= Common::KEYCODE_SPACE && keyState.keycode <= Common::KEYCODE_z
					&& keyState.keycode != Common::KEYCODE_AT && name.size() < 50
					&& (xp + screen.charWidth(keyState.keycode)) < 296) {
				screen.vgaBar(Common::Rect(xp, yp, xp + 8, yp + 9), BUTTON_MIDDLE);
				screen.print(Common::Point(xp, yp), TALK_FOREGROUND, "%c", (char)keyState.keycode);
				xp += screen.charWidth((char)keyState.keycode);
				name += (char)keyState.keycode;
			}
		}

		if (events._released) {
			switch (found) {
			case BTN_EXIT:
				done = -1; break;
			case BTN_BACKWARD:
				done = 2; break;
			case BTN_FORWARD:
				done = 1; break;
			default:
				break;
			}
		}
	} while (!done);

	if (done != -1) {
		_find = name;
	} else {
		done = 0;
	}

	// Redisplay the journal screen
	drawJournal();
	doJournal(0, 0);
	screen.slamArea(0, 0, SHERLOCK_SCREEN_WIDTH, SHERLOCK_SCREEN_HEIGHT);

	return done;
}

/**
 * Reset viewing position to the start of the journal
 */
void Journal::resetPosition() {
	_index = _sub = _up = _down = 0;
	_page = 1;
}

/**
 * Synchronize the data for a savegame
 */
void Journal::synchronize(Common::Serializer &s) {
	s.syncAsSint16LE(_index);
	s.syncAsSint16LE(_sub);
	s.syncAsSint16LE(_page);
	s.syncAsSint16LE(_maxPage);

	int journalCount = _journal.size();
	s.syncAsUint16LE(journalCount);
	if (s.isLoading())
		_journal.resize(journalCount);

	for (uint idx = 0; idx < _journal.size(); ++idx) {
		JournalEntry &je = _journal[idx];

		s.syncAsSint16LE(je._converseNum);
		s.syncAsByte(je._replyOnly);
		s.syncAsSint16LE(je._statementNum);
	}
}

} // End of namespace Sherlock