source: murachi/esteidfirefoxplugin/common/PINPanel.m @ 28fc3c9

/*
 * Estonian ID card plugin for web browsers
 *
 * Copyright (C) 2010-2011 Codeborne <info@codeborne.com>
 *
 * This is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#import "PINPanel.h"

#include "esteid_log.h"
#include "l10n.h"

@implementation PINPanel
@synthesize okButton, cancelButton, countdownTimer, progressBar;

- (void)dealloc {
        LOG_LOCATION;
        [[NSNotificationCenter defaultCenter] removeObserver:self];
        [super dealloc];
}

- (void) awakeFromNib {
        LOG_LOCATION;
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(pinFieldDidChange:) name:NSControlTextDidChangeNotification object:nil];
}

- (IBAction)okClicked:(id)pId 
{
        cancelled = FALSE;
        [NSApp stopModal];
}

- (IBAction)cancelClicked:(id)pId 
{
        cancelled = TRUE;
        [NSApp abortModal];
}

- (void)pinFieldDidChange:(NSNotification*)aNotification;
{
        [okButton setEnabled:([[[aNotification object] stringValue] length] >= minAcceptablePin2Length)];
}

- (void)doCountdown
{
        if (countdownTimer) {
                return;
        }
        remainingTicks = 30;
        [self updateProgressBar];
        [progressBar startAnimation: self];
        countdownTimer = [NSTimer scheduledTimerWithTimeInterval: 1.0 target: self selector: @selector(handleTimerTick) userInfo: nil repeats: YES];
}

- (void)handleTimerTick
{
        remainingTicks--;
        [self updateProgressBar];       
        if (remainingTicks <= 0) {
                [countdownTimer invalidate];
                [progressBar stopAnimation: self];
                countdownTimer = nil;
                EstEID_log("PIN pad countdown timer reached 0"); 
        }
}

- (void)updateProgressBar
{
        [progressBar setDoubleValue:(double)remainingTicks];
}

- (NSString *)showForWindow:(NSWindow *)window withName:(const char *)name withMessage:(const char *)message withMinAcceptablePin2Length:(unsigned)minPin2Length usePinPad:(int)usePinPad 
{
        EstEID_log("parameters: withName=%s, withMessage=%s, withMinAcceptablePin2Length=%u, usePinPad=%i", name, message, minPin2Length, usePinPad);           
        
        if(usePinPad) {
                [NSBundle loadNibNamed: @"PINPadMessageBox" owner: self];
                [pinFieldLabel setTitleWithMnemonic:[NSString stringWithUTF8String: l10n("For signing enter PIN2 from PIN pad")]];
                [messageField setTitleWithMnemonic: (message && message[0]) ? [NSString stringWithUTF8String: message] : @""];
                
                [self doCountdown];
                [[NSRunLoop currentRunLoop] addTimer:countdownTimer forMode:NSModalPanelRunLoopMode];
                
        }else{
                minAcceptablePin2Length = minPin2Length;
                EstEID_log("minAcceptablePin2Length set to %u", minAcceptablePin2Length);
                if (message && message[0]) {
                        [NSBundle loadNibNamed: @"PINDialogWithMessage" owner: self];
                        [messageField setTitleWithMnemonic: [NSString stringWithUTF8String: message]];
                }
                else {
                        [NSBundle loadNibNamed: @"PINDialog" owner: self];
                }

                [pinFieldLabel setTitleWithMnemonic:[NSString stringWithUTF8String: l10n("For signing enter PIN2:")]];
                [okButton setTitle:[NSString stringWithUTF8String:l10n("Sign")]];
                [cancelButton setTitle:[NSString stringWithUTF8String:l10n("Cancel")]];
        }
        [nameLabel setTitleWithMnemonic: [NSString stringWithUTF8String: name]];
        
        [NSApp beginSheet: pinPanel modalForWindow: window modalDelegate: nil didEndSelector: nil contextInfo: nil];
        EstEID_log("starting modal sheet (%s)", usePinPad ? "pinpad": "card reader");
        [pinPanel setTitle:[NSString stringWithUTF8String:l10n("Sign")]];
        [NSApp runModalForWindow: pinPanel];
        EstEID_log("modal sheet ended");
        [NSApp endSheet: pinPanel];
        [pinPanel orderOut: self];      

        if (countdownTimer) {
                [countdownTimer invalidate];
                countdownTimer = nil;
        }

        if(usePinPad) {
                LOG_LOCATION;
                return @"";
        }
        LOG_LOCATION;
        return cancelled ? @"" : [pinField stringValue];
}

@end