package xxx.xxx.xxx;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;

/**
 * 
 * @brief Custom dialogs build only with SWT components
 *
 */
public class SWTDialog {
	private static Shell shell;
	private static Label lblMessage;
	private static Button btnLeft;
	private static Button btnRight;
	private static int response;
	
	public SWTDialog(int style) {
		Display display = Display.getCurrent();
		shell = new Shell (display);
		shell.setBounds(0, 0, 413, 158);
		btnLeft = new Button (shell, SWT.PUSH);
		btnLeft.setBounds(207, 82, 87, 25);
		btnRight = new Button (shell, SWT.PUSH);
		btnRight.setBounds(300, 82, 87, 25);
		lblMessage = new Label (shell, SWT.PUSH);
		lblMessage.setBounds(67, 13, 320, 63);
		Label lblImage = new Label (shell, SWT.NONE);
		lblImage.setBounds(10, 10, 51, 43);
			
		if (style == SWT.ICON_ERROR) {
			//Error icon
			lblImage.setImage(display.getSystemImage(SWT.ICON_ERROR));
			shell.setText("Fehler");
			btnLeft.setText("OK");
			btnLeft.setBounds(150, 82, 87, 25);
			btnRight.setVisible(false);
		} else if (style == SWT.ICON_WARNING) {
			//Warning icon
			lblImage.setImage(display.getSystemImage(SWT.ICON_WARNING));
			shell.setText("Warnung");
			btnLeft.setText("Ja");
			btnRight.setText("Nein");

		} else if (style == SWT.ICON_INFORMATION) {
			//Info icon			
			lblImage.setImage(display.getSystemImage(SWT.ICON_INFORMATION));
			shell.setText("Information");
			btnLeft.setText("OK");
			btnLeft.setBounds(160, 82, 87, 25);
			btnRight.setVisible(false);
		}
	}
	
	public int open() {
		shell.open();
		
		btnLeft.addSelectionListener(new SelectionAdapter() {
			@Override
			public void widgetSelected(SelectionEvent e) {
				if (btnLeft.getText() == "OK") {
					shell.close();
					response = SWT.OK;
				} else if (btnLeft.getText() == "Ja") {
					shell.close();
					response = SWT.YES;					
				}
				
			}
		});
		
		btnRight.addSelectionListener(new SelectionAdapter() {
			@Override
			public void widgetSelected(SelectionEvent e) {
				shell.close();
				response = SWT.NO;
			}
		});		
		
		Display display = Display.getCurrent();
		while (!shell.isDisposed()) {
	      if (!display.readAndDispatch()) {
	        display.sleep();
	      }
	    }
		return response;
	}
	
	public String getMessage() {		
		return lblMessage.getText();
	}
	
	/**
	 * 
	 * @brief Sets Message of Dialog and automatically breaks lines
	 */
	public void setMessage(String sMessage) {
		int maxLength = 52; //max number of characters per line/row
		int maxRow = 4; 
		
		if(sMessage.length() > maxLength) {
			int iCount = 0;
			int iString = 0;
			int iRow = 0;
			boolean bTooLong = false; //Indicator for line breaking
			String sHelp;
			String[] sRow = new String[maxRow];   //String array that contains one line/row per item
			String[] split = sMessage.split(" ");
			sMessage = "";

			while (iCount < maxLength && iString < split.length) {
				if (sRow[iRow] == null) {
					sRow[iRow] = split[iString] + " ";
					iString++;
				} else {					
					sHelp = sRow[iRow] + split[iString] + " ";
					if (sHelp.length() > maxLength) {
						bTooLong = true;
					} else {
						sRow[iRow] = sHelp;
						bTooLong = false;
						iString++;
						iCount++;
					}
				}
				if (bTooLong == true){ 
					iCount = 0;
					iRow++;
					if (iRow >= maxRow) {   //adds "..." to end of last line that can be displayed
						sRow[maxRow-1] += "...";
						break;
					}
					sRow[iRow-1] += "\n";
					bTooLong = false;
				}
			}
			for(int i = 0; i < maxRow ; i++) {
				if(sRow[i] == null) break;
				sMessage += sRow[i];
				lblMessage.setText(sMessage);
			}
		} else {
			lblMessage.setText(sMessage);
		}

	}
	public void setText(String sTitle) {
		shell.setText(sTitle);
	}
}