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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2012 Olaf Wintermann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#import <stdio.h>
#import <stdlib.h>
#import <sys/stat.h>
#import <sys/types.h>
#import <errno.h>

#import "../common/context.h"
#import "../common/document.h"
#import "../common/properties.h"

#import "toolkit.h"
#import "window.h"
#import "menu.h"
#import "toolbar.h"
#import "stock.h"

NSAutoreleasePool *pool;

static char *application_name;

static ui_callback   appclose_fnc;
static void          *appclose_udata;

static ui_callback   openfile_fnc;
static void          *openfile_udata;

void ui_init(char *appname, int argc, char **argv) {
    pool = [[NSAutoreleasePool alloc] init];
    [NSApplication sharedApplication];
    [NSBundle loadNibNamed:@"MainMenu" owner:NSApp];
    
    UiApplicationDelegate *delegate = [[UiApplicationDelegate alloc]init];
    [NSApp setDelegate: delegate];
    
    
    uic_docmgr_init();
    ui_menu_init();
    ui_toolbar_init();
    ui_stock_init();
    
    uic_load_app_properties();
}

char* ui_appname() {
    return application_name;
}

void ui_exitfunc(ui_callback f, void *userdata) {
    appclose_fnc = f;
    appclose_udata = userdata;
}

void ui_openfilefunc(ui_callback f, void *userdata) {
    openfile_fnc = f;
    openfile_udata = userdata;
}

void ui_show(UiObject *obj) {
    uic_check_group_widgets(obj->ctx);
    if([obj->widget class] == [UiCocoaWindow class]) {
        UiCocoaWindow *window = (UiCocoaWindow*)obj->widget;
        [window makeKeyAndOrderFront:nil];
    } else {
        printf("Error: ui_show: Object is not a Window!\n");
    }
}

void ui_set_show_all(UIWIDGET widget, int value) {
    // TODO
}

void ui_set_visible(UIWIDGET widget, int visible) {
    // TODO
}

void ui_set_enabled(UIWIDGET widget, int enabled) {
    [(id)widget setEnabled: enabled];
}



void ui_job(UiObject *obj, ui_threadfunc tf, void *td, ui_callback f, void *fd) {
    UiThread *thread = [[UiThread alloc]initWithObject:obj];
    [thread setJobFunction:tf];
    [thread setJobData:td];
    [thread setFinishCallback:f];
    [thread setFinishData:fd];
    [thread start];
}

void ui_main() {
    [NSApp run];
    [pool release];
}


void ui_clipboard_set(char *str) {
    NSString *string = [[NSString alloc] initWithUTF8String:str];
    NSPasteboard * pasteBoard = [NSPasteboard generalPasteboard];
    [pasteBoard declareTypes:[NSArray arrayWithObject:NSStringPboardType] owner:nil];
    [pasteBoard setString:string forType:NSStringPboardType];
}

char* ui_clipboard_get() {
    NSPasteboard * pasteBoard = [NSPasteboard generalPasteboard];
    NSArray *classes = [[NSArray alloc] initWithObjects:[NSString class], nil];
    NSDictionary *options = [NSDictionary dictionary];
    NSArray *data = [pasteBoard readObjectsForClasses:classes options:options];
    
    if(data != nil) {
        NSString *str = [data componentsJoinedByString: @""];
        
        // copy C string
        size_t length = [str lengthOfBytesUsingEncoding:NSUTF8StringEncoding];
        const char *cstr = [str UTF8String];
        char *value = malloc(length + 1);
        memcpy(value, cstr, length);
        value[length] = '\0';
        
        return value;
    } else {
        return NULL;
    }
}


@implementation UiApplicationDelegate

- (void)applicationWillTerminate:(NSNotification*)notification {
    printf("terminate\n");
}

- (BOOL)applicationShouldHandleReopen:(NSApplication *)app hasVisibleWindows:(BOOL)visible; {
    if(!visible) {
        printf("reopen\n");
    }
    return NO;
}

- (BOOL)application:(NSApplication*)application openFile:(NSString*)filename {
    if(openfile_fnc) {
        UiEvent event;
        event.obj = NULL;
        event.document = NULL;
        event.window = NULL;
        event.eventdata = (void*)[filename UTF8String];
        event.intval = 0;
        openfile_fnc(&event, openfile_udata);
    }
    
    return NO;
}

@end


@implementation EventWrapper

- (EventWrapper*) initWithData: (void*)d callback:(ui_callback) f {
    data = d;
    callback = f;
    value = 0;
    return self;
}


- (void*) data {
    return data;
}

- (void) setData:(void*)d {
    data = d;
}


- (ui_callback) callback {
    return callback;
}

- (void) setCallback: (ui_callback)f {
    callback = f;
}

- (int) intval {
    return value;
}

- (void) setIntval:(int)i {
    value = i;
}


- (BOOL)handleEvent:(id)sender {
    NSWindow *activeWindow = [NSApp keyWindow];
    
    UiEvent event;
    event.eventdata = NULL;
    if([activeWindow class] == [UiCocoaWindow class]) {
        event.obj = [(UiCocoaWindow*)activeWindow object];
        event.window = event.obj->window;
        event.document = event.obj->ctx->document;
        event.intval = value;
    }
    if(callback) {
        callback(&event, data);
    }
    
    return true;
}

- (BOOL)handleStateEvent:(id)sender {
    NSWindow *activeWindow = [NSApp keyWindow];
    int state = [sender state] ? NSOffState : NSOnState;
    
    UiEvent event;
    event.intval = state;
    event.eventdata = NULL;
    if([activeWindow class] == [UiCocoaWindow class]) {
        event.obj = [(UiCocoaWindow*)activeWindow object];
        event.window = event.obj->window;
        event.document = event.obj->ctx->document;
        // if the sender is a menu item, we have to save the state for this
        // window
        UiMenuItem *wmi = [(UiCocoaWindow*)activeWindow getMenuItem: sender];
        if(wmi) {
            // update state in window data
            wmi->state = state;
        }
    } else {
        event.window = NULL;
        event.document = NULL;
    }
    if(callback) {
        callback(&event, data);
    }
    [sender setState: state];
    
    return true;
}

- (BOOL)handleToggleEvent:(id)sender {
    NSWindow *activeWindow = [NSApp keyWindow];
    
    UiEvent event;
    event.intval = [sender state];
    event.eventdata = NULL;
    if([activeWindow class] == [UiCocoaWindow class]) {
        event.obj = [(UiCocoaWindow*)activeWindow object];
        event.window = event.obj->window;
        event.document = event.obj->ctx->document;
    } else {
        event.window = NULL;
        event.document = NULL;
    }
    if(callback) {
        callback(&event, data);
    }
    
    return true;
}

@end

@implementation UiThread

- (id) initWithObject:(UiObject*)object {
    obj = object;
    job_func = NULL;
    job_data = NULL;
    finish_callback = NULL;
    finish_data = NULL;
    return self;
}

- (void) setJobFunction:(ui_threadfunc)func {
    job_func = func;
}

- (void) setJobData:(void*)data {
    job_data = data;
}

- (void) setFinishCallback:(ui_callback)callback {
    finish_callback = callback;
}

- (void) setFinishData:(void*)data {
    finish_data = data;
}

- (void) start {
    [NSThread detachNewThreadSelector:@selector(runJob:)
                             toTarget:self
                           withObject:nil];
}

- (void) runJob:(id)n {
    int result = job_func(job_data);
    if(!result) {
        [self performSelectorOnMainThread:@selector(finish:)
                               withObject:nil
                            waitUntilDone:NO];
    }
}

- (void) finish:(id)n {
    UiEvent event;
    event.obj = obj;
    event.window = obj->window;
    event.document = obj->ctx->document;
    event.eventdata = NULL;
    event.intval = 0;
    finish_callback(&event, finish_data);
}

@end