/*
===========================================================================

Wolfenstein: Enemy Territory GPL Source Code
Copyright (C) 1999-2010 id Software LLC, a ZeniMax Media company. 

This file is part of the Wolfenstein: Enemy Territory GPL Source Code (“Wolf ET Source Code”).  

Wolf ET Source Code 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 3 of the License, or
(at your option) any later version.

Wolf ET Source Code 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 Wolf ET Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the Wolf: ET Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Wolf ET Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/

#include "cg_local.h"

// digibob
// Panel Handling
// ======================================================
panel_button_t* cg_focusButton;

void CG_PanelButton_RenderEdit( panel_button_t* button ) {
	qboolean useCvar = button->data[0] ? qfalse : qtrue;
	int offset = -1;

	if ( useCvar ) {
		char buffer[256 + 1];
		trap_Cvar_VariableStringBuffer( button->text, buffer, sizeof( buffer ) );

		if ( cg_focusButton == button && ( ( cg.time / 1000 ) % 2 ) ) {
			if ( trap_Key_GetOverstrikeMode() ) {
				Q_strcat( buffer, sizeof( buffer ), "^0|" );
			} else {
				Q_strcat( buffer, sizeof( buffer ), "^0_" );
			}
		} else {
			Q_strcat( buffer, sizeof( buffer ), " " );
		}

		do {
			offset++;
			if ( buffer + offset  == '\0' ) {
				break;
			}
		} while ( CG_Text_Width_Ext( buffer + offset, button->font->scalex, 0, button->font->font ) > button->rect.w );

		CG_Text_Paint_Ext( button->rect.x, button->rect.y + button->rect.h, button->font->scalex, button->font->scaley, button->font->colour, va( "^7%s", buffer + offset ), 0, 0, button->font->style, button->font->font );

		//	CG_FillRect( button->rect.x, button->rect.y, button->rect.w, button->rect.h, colorRed );
	} else {
		int maxlen = button->data[0];
		char *s;

		if ( cg_focusButton == button && ( ( cg.time / 1000 ) % 2 ) ) {
			if ( trap_Key_GetOverstrikeMode() ) {
				s = va( "^7%s^0|", button->text );
			} else {
				s = va( "^7%s^0_", button->text );
			}
		} else {
			s = va( "^7%s ", button->text ); // space hack to make the text not blink
		}

		do {
			offset++;
			if ( s + offset  == '\0' ) {
				break;
			}
		} while ( CG_Text_Width_Ext( s + offset, button->font->scalex, 0, button->font->font ) > button->rect.w );

		CG_Text_Paint_Ext( button->rect.x, button->rect.y + button->rect.h, button->font->scalex, button->font->scaley, button->font->colour, s + offset, 0, 0, button->font->style, button->font->font );

		//	CG_FillRect( button->rect.x, button->rect.y, button->rect.w, button->rect.h, colorRed );
	}
}

qboolean CG_PanelButton_EditClick( panel_button_t* button, int key ) {
	if ( key == K_MOUSE1 ) {
		if ( !CG_CursorInRect( &button->rect ) && cg_focusButton == button ) {
			CG_PanelButtons_SetFocusButton( NULL );
			if ( button->onFinish ) {
				button->onFinish( button );
			}
			return qfalse;
		} else {
			CG_PanelButtons_SetFocusButton( button );
			return qtrue;
		}
	} else {
		char buffer[256];
		char *s;
		int len, maxlen;
		qboolean useCvar = button->data[0] ? qfalse : qtrue;

		if ( useCvar ) {
			maxlen = sizeof( buffer );
			trap_Cvar_VariableStringBuffer( button->text, buffer, sizeof( buffer ) );
			len = strlen( buffer );
		} else {
			maxlen = button->data[0];
			s = (char *)button->text;
			len = strlen( s );
		}

		if ( key & K_CHAR_FLAG ) {
			key &= ~K_CHAR_FLAG;

			if ( key == 'h' - 'a' + 1 ) {      // ctrl-h is backspace
				if ( len ) {
					if ( useCvar ) {
						buffer[len - 1] = '\0';
						trap_Cvar_Set( button->text, buffer );
					} else {
						s[len - 1] = '\0';
					}
				}
				return qtrue;
			}

			if ( key < 32 ) {
				return qtrue;
			}

			if ( len >= maxlen - 1 ) {
				return qtrue;
			}

			if ( useCvar ) {
				buffer[len] = key;
				buffer[len + 1] = '\0';
				trap_Cvar_Set( button->text, buffer );
			} else {
				s[len] = key;
				s[len + 1] = '\0';
			}
			return qtrue;
		} else {
			// Gordon: FIXME: have this work with all our stuff (use data[x] to store cursorpos etc)
/*			if ( key == K_DEL || key == K_KP_DEL ) {
				if ( item->cursorPos < len ) {
					memmove( buff + item->cursorPos, buff + item->cursorPos + 1, len - item->cursorPos);
					DC->setCVar(item->cvar, buff);
				}
				return qtrue;
			}*/

/*			if ( key == K_RIGHTARROW || key == K_KP_RIGHTARROW )
			{
				if (editPtr->maxPaintChars && item->cursorPos >= editPtr->paintOffset + editPtr->maxPaintChars && item->cursorPos < len) {
					item->cursorPos++;
					editPtr->paintOffset++;
					return qtrue;
				}
				if (item->cursorPos < len) {
					item->cursorPos++;
				}
				return qtrue;
			}

			if ( key == K_LEFTARROW || key == K_KP_LEFTARROW )
			{
				if ( item->cursorPos > 0 ) {
					item->cursorPos--;
				}
				if (item->cursorPos < editPtr->paintOffset) {
					editPtr->paintOffset--;
				}
				return qtrue;
			}

			if ( key == K_HOME || key == K_KP_HOME) {// || ( tolower(key) == 'a' && trap_Key_IsDown( K_CTRL ) ) ) {
				item->cursorPos = 0;
				editPtr->paintOffset = 0;
				return qtrue;
			}

			if ( key == K_END || key == K_KP_END)  {// ( tolower(key) == 'e' && trap_Key_IsDown( K_CTRL ) ) ) {
				item->cursorPos = len;
				if(item->cursorPos > editPtr->maxPaintChars) {
					editPtr->paintOffset = len - editPtr->maxPaintChars;
				}
				return qtrue;
			}

			if ( key == K_INS || key == K_KP_INS ) {
				DC->setOverstrikeMode(!DC->getOverstrikeMode());
				return qtrue;
			}*/

			if ( key == K_ENTER || key == K_KP_ENTER ) {
				if ( button->onFinish ) {
					button->onFinish( button );
				}
			}
		}
	}

	return qtrue;
}

qboolean CG_PanelButtonsKeyEvent( int key, qboolean down, panel_button_t** buttons ) {
	panel_button_t* button;

	if ( cg_focusButton ) {
		for ( ; *buttons; buttons++ ) {
			button = ( *buttons );

			if ( button == cg_focusButton ) {
				if ( button->onKeyDown && down ) {
					if ( !button->onKeyDown( button, key ) ) {
						if ( cg_focusButton ) {
							return qfalse;
						}
					}
				}
				if ( button->onKeyUp && !down ) {
					if ( !button->onKeyUp( button, key ) ) {
						if ( cg_focusButton ) {
							return qfalse;
						}
					}
				}
			}
		}
	}

	if ( down ) {
		for ( ; *buttons; buttons++ ) {
			button = ( *buttons );

			if ( button->onKeyDown ) {
				if ( CG_CursorInRect( &button->rect ) ) {
					if ( button->onKeyDown( button, key ) ) {
						return qtrue;
					}
				}
			}
		}
	} else {
		for ( ; *buttons; buttons++ ) {
			button = ( *buttons );

			if ( button->onKeyUp && CG_CursorInRect( &button->rect ) ) {
				if ( button->onKeyUp( button, key ) ) {
					return qtrue;
				}
			}
		}
	}

	return qfalse;
}

void CG_PanelButtonsSetup( panel_button_t** buttons ) {
	panel_button_t* button;

	for ( ; *buttons; buttons++ ) {
		button = ( *buttons );

		if ( button->shaderNormal ) {
			button->hShaderNormal = trap_R_RegisterShaderNoMip( button->shaderNormal );
		}
	}
}

void CG_PanelButtonsRender( panel_button_t** buttons ) {
	panel_button_t* button;

	for ( ; *buttons; buttons++ ) {
		button = ( *buttons );

		if ( button->onDraw ) {
			button->onDraw( button );
		}
	}
}

void CG_PanelButtonsRender_Text( panel_button_t* button ) {
	if ( !button->font ) {
		return;
	}

	CG_Text_Paint_Ext( button->rect.x, button->rect.y, button->font->scalex, button->font->scaley, button->font->colour, button->text, 0, 0, button->font->style, button->font->font );
}

void CG_PanelButtonsRender_Img( panel_button_t* button ) {
	CG_DrawPic( button->rect.x, button->rect.y, button->rect.w, button->rect.h, button->hShaderNormal );
}

panel_button_t* CG_PanelButtons_GetFocusButton( void ) {
	return cg_focusButton;
}

void CG_PanelButtons_SetFocusButton( panel_button_t* button ) {
	cg_focusButton = button;
}