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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002 The ScummVM 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; 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*/
#include "stdafx.h"
#include "ListWidget.h"
#include "ScrollBarWidget.h"
#include "dialog.h"
#include "newgui.h"
/*
* TODO:
* - Abort changes when ESC is pressed or the selection changes
* - When the editing of a string is ended by return, we might consider sending
* a message. Return means that the edit was confirmed. Hence the SaveDialog
* could immediatly do the save in a trivial fashion.
* - Handle double clicks: either start editing of the selected item, or
* send a cmd to our target (i.e. as specified via setCmd or setDoubleCmd)
* This will allow a double click in the load dialog to immediatly load the game
*/
// Height of one entry
#define LINE_HEIGHT 10
ListWidget::ListWidget(Dialog *boss, int x, int y, int w, int h)
: Widget(boss, x, y, w - kScrollBarWidth, h), CommandSender(boss)
{
_flags = WIDGET_ENABLED | WIDGET_CLEARBG | WIDGET_RETAIN_FOCUS | WIDGET_WANT_TICKLE;
_type = kListWidget;
_numberingMode = kListNumberingOne;
_entriesPerPage = (_h - 4) / LINE_HEIGHT;
_currentPos = 0;
_selectedItem = -1;
_scrollBar = new ScrollBarWidget(boss, _x + _w, _y, kScrollBarWidth, _h);
_scrollBar->setTarget(this);
_currentKeyDown = 0;
// FIXME: This flag should come from widget definition
_editable = true;
_editMode = false;
}
ListWidget::~ListWidget()
{
}
void ListWidget::scrollBarRecalc()
{
_scrollBar->_numEntries = _list.size();
_scrollBar->_entriesPerPage = _entriesPerPage;
_scrollBar->_currentPos = _currentPos;
_scrollBar->recalc();
}
void ListWidget::handleMouseDown(int x, int y, int button)
{
int oldSelectedItem = _selectedItem;
if (_flags & WIDGET_ENABLED) {
_selectedItem = (y - 2) / LINE_HEIGHT + _currentPos;
if (_editMode && oldSelectedItem != _selectedItem) {
// loose caret
_list[_selectedItem].deleteLastChar();
_editMode = false;
}
draw();
}
}
void ListWidget::handleKeyDown(char key, int modifiers)
{
bool dirty = false;
int oldSelectedItem = _selectedItem;
if (_editMode) {
// get rid of caret
_list[_selectedItem].deleteLastChar();
if (key == '\n' || key == '\r') {
// enter, exit editmode
_editMode = false;
dirty = true;
}
else if (_editMode && key == 8) { // backspace
_list[_selectedItem].deleteLastChar();
dirty = true;
} else if (_editMode &&
// filter keystrokes
( ( key >= 'a' && key <= 'z' )
|| ( key >= 'A' && key <= 'Z' )
|| ( key >= '0' && key <= '9' )
|| ( key == ' ')
) )
{
_list[_selectedItem] += key;
dirty = true;
}
} else {
// not editmode
switch (key) {
case '\n': // enter
case '\r':
if (_selectedItem >= 0) {
if ((_currentKeyDown != '\n' && _currentKeyDown != '\r')) { // override continuous enter keydown
_editMode = true;
dirty = true;
}
}
break;
case 17: // up arrow
if (_selectedItem > 0)
_selectedItem--;
break;
case 18: // down arrow
if (_selectedItem < _list.size() - 1)
_selectedItem++;
break;
case 24: // pageup
_selectedItem -= _entriesPerPage - 1;
if (_selectedItem < 0)
_selectedItem = 0;
break;
case 25: // pagedown
_selectedItem += _entriesPerPage - 1;
if (_selectedItem >= _list.size() )
_selectedItem = _list.size() - 1;
break;
case 22: // home
_selectedItem = 0;
break;
case 23: // end
_selectedItem = _list.size() - 1;
break;
}
scrollToCurrent();
}
if (_editMode)
// re-add caret
_list[_selectedItem] += '_';
if (dirty || _selectedItem != oldSelectedItem)
draw();
if (_selectedItem != oldSelectedItem) {
// also draw scrollbar
_scrollBar->draw();
}
_currentKeyDown = key;
}
void ListWidget::handleKeyUp(char key, int modifiers)
{
if (key == _currentKeyDown)
_currentKeyDown = 0;
}
void ListWidget::lostFocusWidget()
{
if (_editMode) {
// loose caret
_list[_selectedItem].deleteLastChar();
_editMode = false;
}
draw();
}
void ListWidget::handleCommand(CommandSender *sender, uint32 cmd, uint32 data)
{
switch (cmd) {
case kSetPositionCmd:
if (_currentPos != data) {
_currentPos = data;
draw();
}
break;
}
}
void ListWidget::drawWidget(bool hilite)
{
NewGui *gui = _boss->getGui();
int i, pos, len = _list.size();
ScummVM::String buffer;
// Draw the list items
for (i = 0, pos = _currentPos; i < _entriesPerPage && pos < len; i++, pos++) {
if (_numberingMode == kListNumberingZero || _numberingMode == kListNumberingOne) {
char temp[10];
sprintf(temp, "%2d. ", (pos + _numberingMode));
buffer = temp;
} else
buffer = "";
buffer += _list[pos];
gui->drawString(buffer, _x+5, _y+2 + LINE_HEIGHT * i, _w - 10,
(_selectedItem == pos && _hasFocus) ? gui->_textcolorhi : gui->_textcolor);
}
}
void ListWidget::scrollToCurrent() {
// Only do something if the current item is not in our view port
if (_selectedItem < _currentPos) {
// it's above our view
_currentPos = _selectedItem;
} else if (_selectedItem >= _currentPos + _entriesPerPage ) {
// it's below our view
_currentPos = _selectedItem - _entriesPerPage + 1;
if (_currentPos < 0)
_currentPos = 0;
}
_scrollBar->_currentPos = _currentPos;
_scrollBar->recalc();
}
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