/*
 * Copyright (c) 2013 Samsung Electronics Co., Ltd All Rights Reserved
 *
 * Licensed under the Apache License, Version 2.0 (the License);
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an AS IS BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "$(appName).h"

typedef struct appdata {
	const char *name;
	Evas_Object *win;
	Evas_Object *bg;
	Evas_Object *conform;
	Evas_Object *entry;
	Evas_Object *basic_content;
	Evas_Object *advanced_content;
} appdata_s;

/*
 * @brief Function will be operated when window deletion is requested
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
win_delete_request_cb(void *data , Evas_Object *obj , void *event_info)
{
	ui_app_exit();
}

/*
 * @brief Function will be operated when back key event is triggered on window
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
win_back_cb(void *data , Evas_Object *obj , void *event)
{
	appdata_s *ad = data;
	/* Let window go to hide state. */
	elm_win_lower(ad->win);
}

/*
 * @brief Function to create background object
 * @param[in] parent The Evas object which background object is created on
 * @param[out] Evas_Object The background object which is created
 */
static Evas_Object *
create_bg(Evas_Object *parent)
{
	Evas_Object *bg;

	if (parent == NULL) return NULL;

	bg = elm_bg_add(parent);
	evas_object_size_hint_weight_set(bg, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	elm_win_resize_object_add(parent, bg);
	evas_object_show(bg);

	return bg;
}

/*
 * @brief Function to create conformant object
 * @param[in] parent The Evas object which conformant object is created on
 * @param[out] Evas_Object The conformant object which is created
 */
static Evas_Object *
create_conform(Evas_Object *parent)
{
	Evas_Object *conform, *bg;

	if (parent == NULL) return NULL;

	conform = elm_conformant_add(parent);
	evas_object_size_hint_weight_set(conform, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	elm_win_resize_object_add(parent, conform);

	bg = elm_bg_add(conform);
	elm_object_style_set(bg, "indicator/headerbg");
	elm_object_part_content_set(conform, "elm.swallow.indicator_bg", bg);
	evas_object_show(bg);

	evas_object_show(conform);
	return conform;
}

/*
 * @brief Function will be operated when window rotation is changed
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
rotation_cb(void *data, Evas_Object *obj, void *event_info)
{
	appdata_s *ad = data;
	int current_degree = elm_win_rotation_get(obj);

	if (current_degree != 0 && current_degree != 180) {
		elm_grid_pack_set(ad->basic_content, 45, 3, 52, 94);
		elm_grid_pack_set(ad->advanced_content, 3, 3, 36, 94);
	} else {
		elm_grid_pack_set(ad->basic_content, 3, 3, 94, 94);
		elm_grid_pack_set(ad->advanced_content, -100, -100, 94, 94);
	}
}

/*
 * @brief Function will be operated when '0' button is clicked
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
clicked_0_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
	Evas_Object *entry = data;
	elm_entry_entry_append(entry, "<font_size=50>0</font_size>");
}

/*
 * @brief Function will be operated when '' button is clicked
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
clicked_1_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
	Evas_Object *entry = data;
	elm_entry_entry_append(entry, "<font_size=50>1</font_size>");
}

/*
 * @brief Function will be operated when '2' button is clicked
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
clicked_2_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
	Evas_Object *entry = data;
	elm_entry_entry_append(entry, "<font_size=50>2</font_size>");
}

/*
 * @brief Function will be operated when '3' button is clicked
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
clicked_3_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
	Evas_Object *entry = data;
	elm_entry_entry_append(entry, "<font_size=50>3</font_size>");
}

/*
 * @brief Function will be operated when '4' button is clicked
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
clicked_4_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
	Evas_Object *entry = data;
	elm_entry_entry_append(entry, "<font_size=50>4</font_size>");
}

/*
 * @brief Function will be operated when '5' button is clicked
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
clicked_5_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
	Evas_Object *entry = data;
	elm_entry_entry_append(entry, "<font_size=50>5</font_size>");
}

/*
 * @brief Function will be operated when '6' button is clicked
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
clicked_6_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
	Evas_Object *entry = data;
	elm_entry_entry_append(entry, "<font_size=50>6</font_size>");
}

/*
 * @brief Function will be operated when '7' button is clicked
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
clicked_7_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
	Evas_Object *entry = data;
	elm_entry_entry_append(entry, "<font_size=50>7</font_size>");
}

/*
 * @brief Function will be operated when '8' button is clicked
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
clicked_8_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
	Evas_Object *entry = data;
	elm_entry_entry_append(entry, "<font_size=50>8</font_size>");
}

/*
 * @brief Function will be operated when '9' button is clicked
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
clicked_9_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
	Evas_Object *entry = data;
	elm_entry_entry_append(entry, "<font_size=50>9</font_size>");
}

/*
 * @brief Function will be operated when 'C' button is clicked
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
clicked_c_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
	Evas_Object *entry = data;
	elm_entry_entry_set(entry, "<align=right>");
}

/*
 * @brief Function will be operated when '/' button is clicked
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
clicked_divide_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
	Evas_Object *entry = data;
	elm_entry_entry_append(entry, "<font_size=50>/</font_size>");
}

/*
 * @brief Function will be operated when 'X' button is clicked
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
clicked_multi_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
	Evas_Object *entry = data;
	elm_entry_entry_append(entry, "<font_size=50>X</font_size>");
}

/*
 * @brief Function will be operated when '+' button is clicked
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
clicked_plus_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
	Evas_Object *entry = data;
	elm_entry_entry_append(entry, "<font_size=50>+</font_size>");
}

/*
 * @brief Function will be operated when '-' button is clicked
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
clicked_minus_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
	Evas_Object *entry = data;
	elm_entry_entry_append(entry, "<font_size=50>-</font_size>");
}

/*
 * @brief Function will be operated when '.' button is clicked
 * @param[in] data The data to be passed to the callback function
 * @param[in] obj The Evas object handle to be passed to the callback function
 * @param[in] event_info The system event information
 */
static void
clicked_dot_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
	Evas_Object *entry = data;
	elm_entry_entry_append(entry, "<font_size=50>.</font_size>");
}

/*
 * @brief Function to create button layout
 * @param[in] parent The Evas object which layout object is created on
 * @param[in] ad The data structure to manage gui object
 * @param[out] Evas_Object The layout object which is created
 */
static Evas_Object *
create_panel_basic_content(Evas_Object *parent, appdata_s *ad)
{
	Evas_Object *table, *button;

	/* Table */
	table = elm_table_add(parent);
	elm_table_padding_set(table, 10, 10);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>C</font_size>");
	evas_object_smart_callback_add(button, "clicked", clicked_c_cb, ad->entry);
	evas_object_show(button);
	elm_table_pack(table, button, 0, 0, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>/</font_size>");
	evas_object_smart_callback_add(button, "clicked", clicked_divide_cb, ad->entry);
	evas_object_show(button);
	elm_table_pack(table, button, 1, 0, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>X</font_size>");
	evas_object_smart_callback_add(button, "clicked", clicked_multi_cb, ad->entry);
	evas_object_show(button);
	elm_table_pack(table, button, 2, 0, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>Back</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 3, 0, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>7</font_size>");
	evas_object_smart_callback_add(button, "clicked", clicked_7_cb, ad->entry);
	evas_object_show(button);
	elm_table_pack(table, button, 0, 1, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>8</font_size>");
	evas_object_smart_callback_add(button, "clicked", clicked_8_cb, ad->entry);
	evas_object_show(button);
	elm_table_pack(table, button, 1, 1, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>9</font_size>");
	evas_object_smart_callback_add(button, "clicked", clicked_9_cb, ad->entry);
	evas_object_show(button);
	elm_table_pack(table, button, 2, 1, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>-</font_size>");
	evas_object_smart_callback_add(button, "clicked", clicked_minus_cb, ad->entry);
	evas_object_show(button);
	elm_table_pack(table, button, 3, 1, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>4</font_size>");
	evas_object_smart_callback_add(button, "clicked", clicked_4_cb, ad->entry);
	evas_object_show(button);
	elm_table_pack(table, button, 0, 2, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>5</font_size>");
	evas_object_smart_callback_add(button, "clicked", clicked_5_cb, ad->entry);
	evas_object_show(button);
	elm_table_pack(table, button, 1, 2, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>6</font_size>");
	evas_object_smart_callback_add(button, "clicked", clicked_6_cb, ad->entry);
	evas_object_show(button);
	elm_table_pack(table, button, 2, 2, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>+</font_size>");
	evas_object_smart_callback_add(button, "clicked", clicked_plus_cb, ad->entry);
	evas_object_show(button);
	elm_table_pack(table, button, 3, 2, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>1</font_size>");
	evas_object_smart_callback_add(button, "clicked", clicked_1_cb, ad->entry);
	evas_object_show(button);
	elm_table_pack(table, button, 0, 3, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>2</font_size>");
	evas_object_smart_callback_add(button, "clicked", clicked_2_cb, ad->entry);
	evas_object_show(button);
	elm_table_pack(table, button, 1, 3, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>3</font_size>");
	evas_object_smart_callback_add(button, "clicked", clicked_3_cb, ad->entry);
	evas_object_show(button);
	elm_table_pack(table, button, 2, 3, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>( )</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 3, 3, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>0</font_size>");
	evas_object_smart_callback_add(button, "clicked", clicked_0_cb, ad->entry);
	evas_object_show(button);
	elm_table_pack(table, button, 0, 4, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>.</font_size>");
	evas_object_smart_callback_add(button, "clicked", clicked_dot_cb, ad->entry);
	evas_object_show(button);
	elm_table_pack(table, button, 1, 4, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>+/-</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 2, 4, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>=</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 3, 4, 1, 1);

	evas_object_show(table);

	return table;
}

/*
 * @brief Function to create advanced button layout
 * @param[in] parent The Evas object which layout object is created on
 * @param[in] ad The data structure to manage gui object
 * @param[out] Evas_Object The layout object which is created
 */
static Evas_Object *
create_panel_advanced_content(Evas_Object *parent, appdata_s *ad)
{
	Evas_Object *table, *button;

	/* Table */
	table = elm_table_add(parent);
	elm_table_padding_set(table, 10, 10);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>x!</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 0, 0, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>sqrt</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 1, 0, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>%</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 2, 0, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>sin</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 0, 1, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>cos</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 1, 1, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>tan</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 2, 1, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>ln</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 0, 2, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>log</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 1, 2, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>1/x</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 2, 2, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>e^x</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 0, 3, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>X^2</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 1, 3, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>Y^x</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 2, 3, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>| X |</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 0, 4, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>PI</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 1, 4, 1, 1);

	/* Button */
	button = elm_button_add(table);
	evas_object_size_hint_weight_set(button, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(button, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_text_set(button, "<font_size = 50>e</font_size>");
	evas_object_show(button);
	elm_table_pack(table, button, 2, 4, 1, 1);

	evas_object_show(table);

	return table;
}

/*
 * @brief Function to create panel object
 * @param[in] parent The Evas object which panel object is created on
 * @param[in] ad The data structure to manage gui object
 * @param[out] Evas_Object The panel object which is created
 */
static Evas_Object *
create_panel(Evas_Object *parent, appdata_s *ad)
{
	Evas_Object *panel, *grid;

	/* Panel */
	panel = elm_panel_add(parent);
	elm_panel_orient_set(panel, ELM_PANEL_ORIENT_BOTTOM);
	evas_object_show(panel);

	/* Grid */
	grid = elm_grid_add(panel);
	evas_object_size_hint_weight_set(grid, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(grid, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_content_set(panel, grid);

	/* Panel basic content */
	ad->basic_content = create_panel_basic_content(grid, ad);
	evas_object_size_hint_weight_set(ad->basic_content, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(ad->basic_content, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_grid_pack(grid, ad->basic_content, 3, 3, 94, 94);

	/* Panel advanced content */
	ad->advanced_content = create_panel_advanced_content(grid, ad);
	evas_object_size_hint_weight_set(ad->advanced_content, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(ad->advanced_content, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_grid_pack(grid, ad->advanced_content, -100, -100, 94, 94);

	return panel;
}

/*
 * @brief Function to create entry
 * @param[in] parent The Evas object which entry object is created on
 * @param[out] Evas_Object The entry object which is created
 */
static Evas_Object *
create_entry(Evas_Object *parent)
{
	Evas_Object *entry;

	entry = elm_entry_add(parent);
	elm_entry_editable_set(entry, EINA_FALSE);
	elm_entry_entry_set(entry, "<font_size=50><align=right></font_size>");
	evas_object_show(entry);

	return entry;
}

/*
 * @brief Function to create base gui layout
 * @param[in] ad The data structure to manage gui object
 */
static void
create_base_gui(appdata_s *ad)
{
	Evas_Object *grid, *panel;

	ad->win = elm_win_util_standard_add(PACKAGE, PACKAGE);
	elm_win_autodel_set(ad->win, EINA_TRUE);

	if (elm_win_wm_rotation_supported_get(ad->win)) {
		int rots[4] = { 0, 90, 180, 270 };
		elm_win_wm_rotation_available_rotations_set(ad->win, (const int *)(&rots), 4);
	}

	evas_object_smart_callback_add(ad->win, "wm,rotation,changed", rotation_cb, ad);
	evas_object_smart_callback_add(ad->win, "delete,request", win_delete_request_cb, NULL);
	eext_object_event_callback_add(ad->win, EEXT_CALLBACK_BACK, win_back_cb, ad);

	ad->bg = create_bg(ad->win);
	ad->conform = create_conform(ad->win);
	elm_win_conformant_set(ad->win, EINA_TRUE);
	elm_win_indicator_mode_set(ad->win, ELM_WIN_INDICATOR_SHOW);
	elm_win_indicator_opacity_set(ad->win, ELM_WIN_INDICATOR_OPAQUE);

	/* Grid */
	grid = elm_grid_add(ad->conform);
	evas_object_size_hint_weight_set(grid, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
	evas_object_size_hint_align_set(grid, EVAS_HINT_FILL, EVAS_HINT_FILL);
	elm_object_content_set(ad->conform, grid);

	/* Entry */
	ad->entry = create_entry(grid);
	elm_grid_pack(grid, ad->entry, 5, 5, 90, 25);

	/* Panel */
	panel = create_panel(grid, ad);
	elm_grid_pack(grid, panel, 0, 35, 100, 65);

	/* Show window after base gui is set up */
	evas_object_show(ad->win);
}

/*
 * @brief Hook to take necessary actions before main event loop starts
 * Initialize UI resources and application's data
 * If this function return true, the main loop of application starts
 * If this function return false, the application is terminated
 * @param[in] user_data The data to be passed to the callback function
 */
static bool app_create(void *user_data)
{
	/* Hook to take necessary actions before main event loop starts
		Initialize UI resources and application's data
		If this function returns true, the main loop of application starts
		If this function returns false, the application is terminated */
	appdata_s *ad = user_data;

	create_base_gui(ad);

	return true;
}

/*
 * @brief This callback function is called when another application
 * sends the launch request to the application
 * @param[in] app_control The handle to the app_control
 * @param[in] user_data The data to be passed to the callback function
 */
static void app_control(app_control_h app_control, void *user_data)
{
	/* Handle the launch request. */
}

/*
 * @brief This callback function is called each time
 * the application is completely obscured by another application
 * and becomes invisible to the user
 * @param[in] user_data The data to be passed to the callback function
 */
static void app_pause(void *user_data)
{
	/* Take necessary actions when application becomes invisible. */
}

/*
 * @brief This callback function is called each time
 * the application becomes visible to the user
 * @param[in] user_data The data to be passed to the callback function
 */
static void app_resume(void *user_data)
{
	/* Take necessary actions when application becomes visible. */
}

/*
 * @brief This callback function is called once after the main loop of the application exits
 * @param[in] user_data The data to be passed to the callback function
 */
static void app_terminate(void *user_data)
{
    /* Release all resources (*/
	appdata_s *ad;

	if (!user_data)
		return;

	ad = user_data;

	if (ad->win)
		evas_object_del(ad->win);
}

/*
 * @brief This function will be called when the language is changed
 * @param[in] event_info The system event information
 * @param[in] user_data The user data to be passed to the callback function
 */
static void ui_app_lang_changed(app_event_info_h event_info, void *user_data)
{
	/*APP_EVENT_LANGUAGE_CHANGED*/
	char *locale = NULL;
	system_settings_get_value_string(SYSTEM_SETTINGS_KEY_LOCALE_LANGUAGE, &locale);
	elm_language_set(locale);
	free(locale);
	return;
}

/*
 * @brief This function will be called when the orientation is changed
 * @param[in] event_info The system event information
 * @param[in] user_data The user data to be passed to the callback function
 */
static void ui_app_orient_changed(app_event_info_h event_info, void *user_data)
{
	/*APP_EVENT_DEVICE_ORIENTATION_CHANGED*/
	return;
}

/*
 * @brief This function will be called when the region is changed
 * @param[in] event_info The system event information
 * @param[in] user_data The user data to be passed to the callback function
 */
static void ui_app_region_changed(app_event_info_h event_info, void *user_data)
{
	/*APP_EVENT_REGION_FORMAT_CHANGED*/
}

/*
 * @brief This function will be called when the battery is low
 * @param[in] event_info The system event information
 * @param[in] user_data The user data to be passed to the callback function
 */
static void ui_app_low_battery(app_event_info_h event_info, void *user_data)
{
	/*APP_EVENT_LOW_BATTERY*/
}

/*
 * @brief This function will be called when the memory is low
 * @param[in] event_info The system event information
 * @param[in] user_data The user data to be passed to the callback function
 */
static void ui_app_low_memory(app_event_info_h event_info, void *user_data)
{
	/*APP_EVENT_LOW_MEMORY*/
}

/*
 * @brief Main function of the application
 * @param[in] argc The argument count
 * @param[in] argv The argument vector
 */
int main(int argc, char *argv[])
{
	appdata_s ad = {0, };
	int ret;

	ui_app_lifecycle_callback_s event_callback = {0, };
	app_event_handler_h handlers[5] = {NULL, };

	event_callback.create = app_create;
	event_callback.terminate = app_terminate;
	event_callback.pause = app_pause;
	event_callback.resume = app_resume;
	event_callback.app_control = app_control;

	ui_app_add_event_handler(&handlers[APP_EVENT_LOW_BATTERY], APP_EVENT_LOW_BATTERY, ui_app_low_battery, &ad);
	ui_app_add_event_handler(&handlers[APP_EVENT_LOW_MEMORY], APP_EVENT_LOW_MEMORY, ui_app_low_memory, &ad);
	ui_app_add_event_handler(&handlers[APP_EVENT_DEVICE_ORIENTATION_CHANGED], APP_EVENT_DEVICE_ORIENTATION_CHANGED, ui_app_orient_changed, &ad);
	ui_app_add_event_handler(&handlers[APP_EVENT_LANGUAGE_CHANGED], APP_EVENT_LANGUAGE_CHANGED, ui_app_lang_changed, &ad);
	ui_app_add_event_handler(&handlers[APP_EVENT_REGION_FORMAT_CHANGED], APP_EVENT_REGION_FORMAT_CHANGED, ui_app_region_changed, &ad);
	ui_app_remove_event_handler(handlers[APP_EVENT_LOW_MEMORY]);

	ret = ui_app_main(argc, argv, &event_callback, &ad);
	if (ret != APP_ERROR_NONE)
		dlog_print(DLOG_ERROR, LOG_TAG, "ui_app_main() is failed. err = %d", ret);

	return ret;
}