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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 "tree.h"
#import "container.h"
#import "window.h"
#import "../common/context.h"
#import <ucx/utils.h>

@implementation UiTableDataSource

- (id)initWithData:(UiList*)list modelInfo:(UiModelInfo*)modelinfo {
    data = list;
    info = modelinfo;
    lastSelection = NULL;
    return self;
}

- (NSInteger)numberOfRowsInTableView:(NSTableView *)tableview {
    return data->count(data);
}

- (id)tableView:                  (NSTableView*)tableview
        objectValueForTableColumn:(NSTableColumn*)column
                              row:(NSInteger)row
{
    int column_index = [[column identifier]intValue];
    
    void *row_data = data->get(data, row);
    void *cell_data = info->getvalue(row_data, column_index);
    
    BOOL f = false;
    char *str = ui_type_to_string(info->types[column_index], cell_data, &f);
    NSString *s = [[NSString alloc]initWithUTF8String:str];
    return s;
}

- (void)tableView:(NSTableView *)tableview
        setObjectValue:(id)object
        forTableColumn:(NSTableColumn *)column
                   row:(NSInteger)row
{
    int column_index = [[column identifier]intValue];
    
    // TODO
}

- (void)tableViewSelectionDidChange:(NSNotification *)notification {
    NSTableView *tableview = (NSTableView*)notification.object;
    
    // create selection object
    UiListSelection *selection = malloc(sizeof(UiListSelection));
    selection->count = [tableview numberOfSelectedRows];
    
    selection->rows = calloc(selection->count, sizeof(int));
    NSIndexSet *indices = [tableview selectedRowIndexes];
    NSUInteger index = [indices firstIndex];
    int i=0;
    while (index!=NSNotFound) {
        selection->rows[i] = index;
        index = [indices indexGreaterThanIndex:index];
        i++;
    }
    
    // create event object
    UiEvent event;
    NSWindow *activeWindow = [NSApp keyWindow];
    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;
    }
    event.eventdata = selection;
    event.intval = selection->count == 0 ? -1 : selection->rows[0];
    
    // callback
    info->selection(&event, info->userdata);
    
    // cleanup
    if(lastSelection) {
        free(lastSelection->rows);
        free(lastSelection);
    }
    lastSelection = selection;
}

- (void)handleDoubleAction:(id)sender {
    // create event object
    UiEvent event;
    NSWindow *activeWindow = [NSApp keyWindow];
    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;
    }
    event.eventdata = lastSelection;
    event.intval = lastSelection->count == 0 ? -1 : lastSelection->rows[0];
    
    info->activate(&event, info->userdata);
}

- (BOOL)tableView:(NSTableView *)tableview isGroupRow:(NSInteger)row {
    return NO;
}

@end


UIWIDGET ui_table(UiObject *obj, UiList *model, UiModelInfo *modelinfo) {
    UiContainer *ct = uic_get_current_container(obj);
    NSRect frame = ct->getframe(ct);
    
    NSScrollView *scrollview = [[NSScrollView alloc] initWithFrame:frame];
    [scrollview setHasVerticalScroller:YES];
    //[scrollvew setHasHorizontalScroller:YES];
    [scrollview setBorderType:NSNoBorder];
    //[scrollview setAutoresizingMask:NSViewWidthSizable|NSViewHeightSizable];
    
    NSTableView *tableview = [[NSTableView alloc]initWithFrame:frame];
    [scrollview setDocumentView:tableview];
    [tableview setAllowsMultipleSelection: YES];
    //[tableview setSelectionHighlightStyle:NSTableViewSelectionHighlightStyleSourceList];
    
    // add columns
    for(int i=0;i<modelinfo->columns;i++) {
        NSString *cid = [[NSString alloc]initWithFormat: @"%d", i];
        NSTableColumn *column = [[NSTableColumn alloc]initWithIdentifier:cid];
        
        NSString *title = [[NSString alloc]initWithUTF8String: modelinfo->titles[i]];
        [[column headerCell] setStringValue:title];
        
        [tableview addTableColumn:column];
    }
    
    UiTableDataSource *source = [[UiTableDataSource alloc]initWithData:model modelInfo:modelinfo];
    [tableview setDataSource:source];
    [tableview setDelegate:source];

    [tableview setDoubleAction:@selector(handleDoubleAction:)];
    [tableview setTarget:source];
    
    
    ct->add(ct, scrollview);
    return scrollview;
}


UIWIDGET ui_listview_var(UiObject *obj, UiListPtr *list, ui_model_getvalue_f getvalue, ui_callback f, void *udata) {
    UiContainer *ct = uic_get_current_container(obj);
    NSRect frame = ct->getframe(ct);
    
    NSScrollView *scrollview = [[NSScrollView alloc] initWithFrame:frame];
    [scrollview setHasVerticalScroller:YES];
    
    [scrollview setBorderType:NSNoBorder];
    
    NSTableView *tableview = [[NSTableView alloc]initWithFrame:frame];
    [scrollview setDocumentView:tableview];
    [tableview setAllowsMultipleSelection: NO];
    
    // add single column
    NSTableColumn *column = [[NSTableColumn alloc]initWithIdentifier:@"c"];
    [tableview addTableColumn:column];
    
    // create model info
    UiModelInfo *modelinfo = ui_model_info(obj->ctx, UI_STRING, -1);
    
    // add source
    UiTableDataSource *source = [[UiTableDataSource alloc]initWithData:list->list modelInfo:modelinfo];
    
    [tableview setDataSource:source];
    [tableview setDelegate:source];

    [tableview setDoubleAction:@selector(handleDoubleAction:)];
    [tableview setTarget:source];
    
    ct->add(ct, scrollview);
    return scrollview;
}

UIWIDGET ui_listview(UiObject *obj, UiList *list, ui_model_getvalue_f getvalue, ui_callback f, void *udata) {
    UiListPtr *listptr = ucx_mempool_malloc(obj->ctx->mempool, sizeof(UiListPtr));
    listptr->list = list;
    return ui_listview_var(obj, listptr, getvalue, f, udata);
}

UIWIDGET ui_listview_nv(UiObject *obj, char *varname, ui_model_getvalue_f getvalue, ui_callback f, void *udata) {
    UiVar *var = uic_connect_var(obj->ctx, varname, UI_VAR_LIST);
    if(var) {
        UiListVar *value = var->value;
        return ui_listview_var(obj, value->listptr, getvalue, f, udata);
    } else {
        // TODO: error
    }
    return NULL;
}


// TODO: motif code duplicate
char* ui_type_to_string(UiModelType type, void *data, BOOL *free) {
    switch(type) {
        case UI_STRING: *free = FALSE; return data;
        case UI_INTEGER: {
            *free = TRUE;
            int *val = data;
            sstr_t str = ucx_asprintf(ucx_default_allocator(), "%d", *val);
            return str.ptr;
        }
    }
    *free = FALSE;
    return NULL;
}