/* 
 * File Editor :: VoiDAPI Test Project
 * -----------------------------------
 * Coded by: VoiDeD
 *
 * Uses: - GNU C library (string)
 *       - WinAPI (HFONT)
 *       - VoiDAPI
 *
 * Time Spent: Waaaaay too much...
 *             Mostly in bug smashing...
 *
 * Todo: - Fix/Add v_window::set_icon()/get_icon()
 *       - Fix v_file::write_string()
*/

#include "voidapi.h"

//main window
v_window* wnd;

//open file dialog
v_dialog* open_diag;

//text edit control
v_control* text_edit;

//open/save/close buttons
v_control* open_btn;
v_control* save_btn;
v_control* close_btn;

//status label
v_control* status_lb;

//file
v_file* file;

//winapi font used in the text edit control
HFONT font;

//used for storing previous length;
int p_len;

void exit(v_window* wind) { //called when the window X is clicked
	//destroys the window and the current message loop for that window
    wind->destroy();
}

void openfile(v_control* ctrl, void* data) { //called when the open button is clicked
	//creates an open file dialog
	open_diag = new v_dialog("Open File...", "Text Files (*.txt)\0*.txt\0\0", v_openfile, wnd->get_hwnd());
    
    //check if the user clicked ok
    if (open_diag->show() != v_ok)
        return;
    
    //create a new file class which will open the file
    file = new v_file(open_diag->get_filename());
    
    //check file length and set the text edit control's text
    p_len = file->get_length();
    if (p_len > 0) {
    	text_edit->set_text(file->read_string(file->get_length()));
	}
	
	//set the title of the window
    std::string str = "";
    str += "File Editor [";
    str += open_diag->get_filename();
    str += "]";
    wnd->set_text(str.c_str());
    
    //update the status label
    status_lb->set_text("Status: File Opened");
}

void savefile(v_control* ctrl, void* data) { //called when the save button is clicked
	//seek to 0x0
	file->seek(0x0, FILE_BEGIN);
	//clear the file
	file->write_data(malloc(p_len), p_len);
	//seek to 0x0 again
	file->seek(0x0, FILE_BEGIN);
	//write all the text in the text edit control into the file, replacing old text
	file->write_string(text_edit->get_text());
	
	//update status label
	status_lb->set_text("Status: File Saved");
}

void closefile(v_control* ctrl, void* data) { //called when the close button is clicked
	//close the file
	file->close();
	//clear the text edit control
	text_edit->set_text("");
	//set the window title
	wnd->set_text("File Editor");
	
	//update status label
	status_lb->set_text("Status: File Closed");
}

void init(v_window* ind) { //called when the main window is created
	//create a new font which will be used in the text edit control
	font = CreateFont( //mostly annoying WinAPI code, but it can work back and forth
		10+4,          //between the WinAPI and VoiDAPI
		0,             //still haven't figured out how to create a font of a specific
		0,             //size... WinAPI forces you to choose height and width
		0,             //and its not in pts...
		FW_NORMAL,
		false,
		false,
		false,
		ANSI_CHARSET,
		OUT_TT_ONLY_PRECIS,
		CLIP_TT_ALWAYS,
		PROOF_QUALITY,
		DEFAULT_PITCH | FF_DONTCARE, //the only flag that I like in the WinAPI, FF_DONTCARE :D
		"Lucida Console\0"); //all that just to select the Lucida Console font...

	//set the text edit control's font
	SendMessage(text_edit->get_hwnd(), WM_SETFONT, (WPARAM)font, MAKELPARAM(true, 0));
}

int main(int argc, char* argv[]) {
	//create a new window
    wnd = new v_window("File Editor", new v_size(600,400));

	//create a text edit control
    text_edit = new v_textbox(new v_size(594,340), new v_point(0,0), wnd->get_hwnd(), true);
    
    //create the 3 buttons which control opening/saving/closing files
    open_btn = new v_button("Open", new v_size(100, 25), new v_point(10, 340), wnd->get_hwnd());
    save_btn = new v_button("Save", new v_size(100, 25), new v_point(120, 340), wnd->get_hwnd());
    close_btn = new v_button("Close", new v_size(100, 25), new v_point(230, 340), wnd->get_hwnd());
    
    //create a status label
    status_lb = new v_label("Status: Idle", new v_size(130, 15), new v_point(350, 345), wnd->get_hwnd(), false);
    
    //register the close and create events
    wnd->register_event(WM_CLOSE, &exit);
    wnd->register_event(WM_CREATE, &init);
    
    //register clicked events to handle file opening/saving/closing
    open_btn->register_event(BN_CLICKED, &openfile);
    save_btn->register_event(BN_CLICKED, &savefile);
    close_btn->register_event(BN_CLICKED, &closefile);
    
    //add all the controls to the window
    wnd->control_add(text_edit);
    wnd->control_add(open_btn);
    wnd->control_add(save_btn);
    wnd->control_add(close_btn);
    wnd->control_add(status_lb);
    
    //finally, show the window
    wnd->show();
}