/**

 * $Id$

 *

 * Construct and manage the controller configuration pane

 *

 * Copyright (c) 2008 Nathan Keynes.

 *

 * 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.

 */

#include "cocoaui.h"

#include "config.h"

#include "display.h"

#include "maple/maple.h"

#include <glib/gstrfuncs.h>

#define MAX_DEVICES 4

static void cocoa_config_keysym_hook(void *data, const gchar *keysym);

@interface KeyBindingEditor (Private)

- (void)updateKeysym: (const gchar *)sym;

@end

@implementation KeyBindingEditor

- (id)init

{

    self = [super init];

    isPrimed = NO;

    lastValue = nil;

    [self setFieldEditor: YES];

    [self setEditable: FALSE];

    return self;

}

- (void)dealloc

{

    if( lastValue != nil ) {

        [lastValue release];

        lastValue = nil;

    }

    [super dealloc];

}

- (void)setPrimed: (BOOL)primed

{

    if( primed != isPrimed ) {

        isPrimed = primed;

        if( primed ) {

            lastValue = [[NSString stringWithString: [self string]] retain];

            [self setString: @"<press key>"];

            input_set_keysym_hook(cocoa_config_keysym_hook, self);            

        } else {

            [lastValue release];

            lastValue = nil;

            input_set_keysym_hook(NULL,NULL);

        }

    }

}

- (void)resignFirstResponder

{

    if( isPrimed ) {

        [self setString: lastValue];

        [self setPrimed: NO];

    }

    [super resignFirstResponder];

}

- (void)fireBindingChanged

{

    id delegate = [self delegate];

    if( delegate != nil && [delegate respondsToSelector:@selector(textDidChange:)] ) {

        [delegate textDidChange: [NSNotification notificationWithName: NSTextDidChangeNotification object: self]];

    }

}

- (void)updateKeysym: (const gchar *)sym

{

    if( sym != NULL ) {

        [self setString: [NSString stringWithCString: sym]];

        [self setPrimed: NO];

        [self fireBindingChanged];

    }

}

- (void)keyPressed: (int)keycode

{

    gchar *keysym = input_keycode_to_keysym(NULL, keycode);

    if( keysym != NULL ) {

        [self updateKeysym: keysym];

        g_free(keysym);

    }

}

- (void)insertText:(id)string

{

    // Do nothing

}

- (void)mouseDown: (NSEvent *)event

{

    [self setPrimed: YES];

    [super mouseDown: event];

}

- (void)keyDown: (NSEvent *) event

{

    NSString *chars = [event characters];

    if( isPrimed ) {

        if( chars != NULL && [chars length] == 1 && [chars characterAtIndex: 0] == 27 ) {

            // Escape char = abort change

            [self setString: lastValue];

            [self setPrimed: NO];

        } else {

            [self keyPressed: ([event keyCode]+1)];

        }

    } else {

        if( chars != NULL && [chars length] == 1 ) {

            int ch = [chars characterAtIndex: 0];

            switch( ch ) {

            case 0x7F:

                [self setString: @""]; 

                [self fireBindingChanged];

                break;

            case '\r':

                [self setPrimed: YES];

                break;

            default:

                [super keyDown: event];

                break;

            }

        } else {

            [super keyDown: event];

        }

    }

}

- (void)flagsChanged: (NSEvent *) event

{

    if( isPrimed ) {

        [self keyPressed: ([event keyCode]+1)];

    }

    [super flagsChanged: event];

}

@end

static void cocoa_config_keysym_hook(void *data, const gchar *keysym)

{

    KeyBindingEditor *editor = (KeyBindingEditor *)data;

    [editor updateKeysym: keysym];

}

@implementation KeyBindingField

@end

/*************************** Key-binding sub-view ***********************/

#define MAX_KEY_BINDINGS 32

@interface ControllerKeyBindingView : NSView

{

    maple_device_t device;

    KeyBindingField *field[MAX_KEY_BINDINGS][2];

}

- (id)initWithFrame: (NSRect)frameRect;

- (void)setDevice: (maple_device_t)device;

@end

@implementation ControllerKeyBindingView

- (id)initWithFrame: (NSRect)frameRect

{

    if( [super initWithFrame: frameRect] == nil ) {

        return nil;

    } else {

        device = NULL;

        return self;

    }

}

- (BOOL)isFlipped

{

    return YES;

}

- (void)removeSubviews

{

    [[self subviews] makeObjectsPerformSelector: @selector(removeFromSuperview)];

}

- (void)controlTextDidChange: (NSNotification *)notify

{

    int binding = [[notify object] tag];

    NSString *val1 = [field[binding][0] stringValue];

    NSString *val2 = [field[binding][1] stringValue];

    char buf[ [val1 length] + [val2 length] + 2 ];

    const gchar *p = NULL;

    if( [val1 length] == 0 ) {

        if( [val2 length] != 0 ) {

            p = [val2 UTF8String];

        }

    } else if( [val2 length] == 0 ) {

        p = [val1 UTF8String];

    } else {

        sprintf( buf, "%s,%s", [val1 UTF8String], [val2 UTF8String] );

        p = buf;

    }

    maple_set_device_config_value( device, binding, p ); 

    lxdream_save_config();

}

- (void)setDevice: (maple_device_t)newDevice

{

    device = newDevice;

    [self removeSubviews];

    if( device != NULL ) {

        lxdream_config_entry_t config = maple_get_device_config(device);

        if( config != NULL ) {

            int count, i, y, x;

            for( count=0; config[count].key != NULL; count++ );

            x = TEXT_GAP;

            NSSize size = NSMakeSize(85*3+TEXT_GAP*4, count*(TEXT_HEIGHT+TEXT_GAP)+TEXT_GAP);

            [self setFrameSize: size];

            [self scrollRectToVisible: NSMakeRect(0,0,1,1)]; 

            y = TEXT_GAP;

            for( i=0; config[i].key != NULL; i++ ) {

                NSRect frame = NSMakeRect(x, y + 2, 85, LABEL_HEIGHT);

                NSTextField *label = cocoa_gui_add_label(self, NS_(config[i].label), frame);

                [label setAlignment: NSRightTextAlignment];

                frame = NSMakeRect( x + 85 + TEXT_GAP, y, 85, TEXT_HEIGHT);

                field[i][0] = [[KeyBindingField alloc] initWithFrame: frame];

                [field[i][0] setAutoresizingMask: (NSViewMinYMargin|NSViewMaxXMargin)];

                [field[i][0] setTag: i];

                [field[i][0] setDelegate: self];

                [self addSubview: field[i][0]];

                frame = NSMakeRect( x + (85*2) + (TEXT_GAP*2), y, 85, TEXT_HEIGHT);

                field[i][1] = [[KeyBindingField alloc] initWithFrame: frame];

                [field[i][1] setAutoresizingMask: (NSViewMinYMargin|NSViewMaxXMargin)];

                [field[i][1] setTag: i];

                [field[i][1] setDelegate: self];

                [self addSubview: field[i][1]];

                if( config[i].value != NULL ) {

                    gchar **parts = g_strsplit(config[i].value,",",3);

                    if( parts[0] != NULL ) {

                        [field[i][0] setStringValue: [NSString stringWithCString: parts[0]]];

                        if( parts[1] != NULL ) {

                            [field[i][1] setStringValue: [NSString stringWithCString: parts[1]]];

                        }

                    }

                    g_strfreev(parts);

                }

                y += (TEXT_HEIGHT + TEXT_GAP);

            }

        } else {

            [self setFrameSize: NSMakeSize(100,TEXT_HEIGHT+TEXT_GAP) ];

        }

    } else {

        [self setFrameSize: NSMakeSize(100,TEXT_HEIGHT+TEXT_GAP) ];

    }

}

@end

/*************************** Top-level controller pane ***********************/

@interface LxdreamPrefsControllerPane: LxdreamPrefsPane

{

    struct maple_device *save_controller[4];

    NSButton *radio[4];

    ControllerKeyBindingView *key_bindings;

}

+ (LxdreamPrefsControllerPane *)new;

@end

@implementation LxdreamPrefsControllerPane

+ (LxdreamPrefsControllerPane *)new

{

    return [[LxdreamPrefsControllerPane alloc] initWithFrame: NSMakeRect(0,0,600,400)];

}

- (id)initWithFrame: (NSRect)frameRect

{

    if( [super initWithFrame: frameRect title: NS_("Controllers")] == nil ) {

        return nil;

    } else {

        const struct maple_device_class **devices = maple_get_device_classes();

        char buf[16];

        int i,j;

        int y = [self contentHeight] - TEXT_HEIGHT - TEXT_GAP;

        NSBox *rule = [[NSBox alloc] initWithFrame: 

                NSMakeRect(210+(TEXT_GAP*3), 1, 1, [self contentHeight] + TEXT_GAP - 2)];

        [rule setAutoresizingMask: (NSViewMaxXMargin|NSViewHeightSizable)];

        [rule setBoxType: NSBoxSeparator];

        [self addSubview: rule];

        NSRect bindingFrame = NSMakeRect(210+(TEXT_GAP*4), 0,

                   frameRect.size.width - (210+(TEXT_GAP*4)), [self contentHeight] + TEXT_GAP );

        NSScrollView *scrollView = [[NSScrollView alloc] initWithFrame: bindingFrame];

        key_bindings = [[ControllerKeyBindingView alloc] initWithFrame: bindingFrame ];

        [scrollView setAutoresizingMask: (NSViewWidthSizable|NSViewHeightSizable)];

        [scrollView setDocumentView: key_bindings];

        [scrollView setDrawsBackground: NO];

        [scrollView setHasVerticalScroller: YES];

        [scrollView setAutohidesScrollers: YES];

        [self addSubview: scrollView];

        [key_bindings setDevice: maple_get_device(0,0)];

        for( i=0; i<MAX_DEVICES; i++ ) {

            int x = TEXT_GAP;

            save_controller[i] = NULL;

            maple_device_t device = maple_get_device(i,0);

            snprintf( buf, sizeof(buf), _("Slot %d."), i );

            radio[i] = [[NSButton alloc] initWithFrame: NSMakeRect( x, y, 60, TEXT_HEIGHT )];

            [radio[i] setTitle: [NSString stringWithUTF8String: buf]];

            [radio[i] setTag: i];

            [radio[i] setButtonType: NSRadioButton];

            [radio[i] setAlignment: NSRightTextAlignment];

            [radio[i] setTarget: self];

            [radio[i] setAction: @selector(radioChanged:)];

            [radio[i] setAutoresizingMask: (NSViewMinYMargin|NSViewMaxXMargin)];

            [self addSubview: radio[i]];

            x += 60 + TEXT_GAP;

            NSPopUpButton *popup = [[NSPopUpButton alloc] initWithFrame: NSMakeRect(x,y,150,TEXT_HEIGHT) 

                                                          pullsDown: NO];

            [popup addItemWithTitle: NS_("<empty>")];

            [popup setAutoresizingMask: (NSViewMinYMargin|NSViewMaxXMargin)];

            [[popup itemAtIndex: 0] setTag: 0];

            for( j=0; devices[j] != NULL; j++ ) {

                [popup addItemWithTitle: [NSString stringWithUTF8String: devices[j]->name]];

                if( device != NULL && device->device_class == devices[j] ) {

                    [popup selectItemAtIndex: (j+1)];

                }

                [[popup itemAtIndex: (j+1)] setTag: (j+1)];

            }

            [popup setTarget: self];

            [popup setAction: @selector(deviceChanged:)];

            [popup setTag: i];

            [self addSubview: popup];

            y -= (TEXT_HEIGHT+TEXT_GAP);

        }

        [radio[0] setState: NSOnState];

        return self;

    }

}

- (void)radioChanged: (id)sender

{

    int slot = [sender tag];

    int i;

    for( i=0; i<MAX_DEVICES; i++ ) {

        if( i != slot ) {

            [radio[i] setState: NSOffState];

        }

    }

    [key_bindings setDevice: maple_get_device(slot,0)];

}

- (void)deviceChanged: (id)sender

{

    int slot = [sender tag];

    int new_device_idx = [sender indexOfSelectedItem] - 1, i; 

    maple_device_class_t new_device_class = NULL;

    for( i=0; i<MAX_DEVICES; i++ ) {

        if( i == slot ) {

            [radio[i] setState: NSOnState];

        } else {

            [radio[i] setState: NSOffState];

        }

    }

    maple_device_t current = maple_get_device(slot,0);

    maple_device_t new_device = NULL;

    if( new_device_idx != -1 ) {

        new_device_class = maple_get_device_classes()[new_device_idx];

    }

    if( current == NULL ? new_device_class == NULL : current->device_class == new_device_class ) {

        // No change

        [key_bindings setDevice: current];

        return;

    }

    if( current != NULL && current->device_class == &controller_class ) {

        save_controller[slot] = current->clone(current);

    }

    if( new_device_class == NULL ) {

        maple_detach_device(slot,0);

    } else {

        if( new_device_class == &controller_class && save_controller[slot] != NULL ) {

            new_device = save_controller[slot];

            save_controller[slot] = NULL;

        } else {

            new_device = maple_new_device( new_device_class->name );

        }

        maple_attach_device(new_device,slot,0);

    }

    [key_bindings setDevice: maple_get_device(slot,0)];

    lxdream_save_config();

}

@end

NSView *cocoa_gui_create_prefs_controller_pane()

{

    return [LxdreamPrefsControllerPane new];

}