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/usr/share/perl5/Shutter/App/HelperFunctions.pm is in shutter 0.94-1.

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###################################################
#
#  Copyright (C) 2008-2013 Mario Kemper <mario.kemper@gmail.com>
#
#  This file is part of Shutter.
#
#  Shutter is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 3 of the License, or
#  (at your option) any later version.
#
#  Shutter 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 General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with Shutter; if not, write to the Free Software
#  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
#
###################################################

package Shutter::App::HelperFunctions;

#modules
#--------------------------------------
use utf8;
use strict;
use Gtk2;

#Glib
use Glib qw/TRUE FALSE/; 

#--------------------------------------

##################public subs##################
sub new {
	my $class = shift;

	#constructor
	my $self = { _common => shift };

	#import shutter dialogs
	my $current_window = $self->{_common}->get_mainwindow;
	$self->{_dialogs} = Shutter::App::SimpleDialogs->new( $current_window );

	#gettext
	$self->{_d} = $self->{_common}->get_gettext;

	bless $self, $class;
	return $self;
}

sub xdg_open {
	my ( $self, $dialog, $link, $user_data ) = @_;
	my @args = ("xdg-open", "$link");
	system(@args);
	if($?){
		my $response = $self->{_dialogs}->dlg_error_message( 
			sprintf( $self->{_d}->get("Error while executing %s."), "'xdg-open'"),
			sprintf( $self->{_d}->get("There was an error executing %s."), "'xdg-open'"),		
			undef, undef, undef,
			undef, undef, undef,
			sprintf( $self->{_d}->get("Exit Code: %d."), $? >> 8)
		);
	}		
}

sub xdg_open_mail {
	my ( $self, $dialog, $mail, @user_data ) = @_;

    my @cmd = 'xdg-email';
    push @cmd, $mail if $mail;
	system(@cmd, @user_data);

	if($?){
		my $response = $self->{_dialogs}->dlg_error_message( 
			sprintf( $self->{_d}->get("Error while executing %s."), "'xdg-email'"),
			sprintf( $self->{_d}->get("There was an error executing %s."), "'xdg-email'"),		
			undef, undef, undef,
			undef, undef, undef,
			sprintf( $self->{_d}->get("Exit Code: %d."), $? >> 8)
		);
	}		
}

sub nautilus_sendto {
	my ( $self, $user_data ) = @_;
	system('nautilus-sendto', $user_data);
	if($?){
		my $response = $self->{_dialogs}->dlg_error_message( 
			sprintf( $self->{_d}->get("Error while executing %s."), "'nautilus-sendto'"),
			sprintf( $self->{_d}->get("There was an error executing %s."), "'nautilus-sendto'"),		
			undef, undef, undef,
			undef, undef, undef,
			sprintf( $self->{_d}->get("Exit Code: %d."), $? >> 8)
		);
	}	
}

sub file_exists {
	my ( $self, $filename ) = @_;
	return FALSE unless $filename;
	$filename = $self->switch_home_in_file($filename);
	return TRUE if ( -f $filename && -r $filename );
	return FALSE;
}

sub folder_exists {
	my ( $self, $folder ) = @_;
	return FALSE unless $folder;
	$folder = $self->switch_home_in_file($folder);
	return TRUE if ( -d $folder && -r $folder );
	return FALSE;
}

sub uri_exists {
	my ( $self, $filename ) = @_;
	return FALSE unless $filename;
	$filename = $self->switch_home_in_file($filename);
	my $new_uri = Gnome2::VFS::URI->new($filename);
	return TRUE if $new_uri->exists;
	return FALSE;
}

sub file_executable {
	my ( $self, $filename ) = @_;
	return FALSE unless $filename;
	$filename = $self->switch_home_in_file($filename);
	return TRUE if ( -x $filename );
	return FALSE;
}

sub switch_home_in_file {
	my ( $self, $filename ) = @_;
	$filename =~ s/^~/$ENV{ HOME }/;    #switch ~ in path to /home/username
	return $filename;
}

sub utf8_decode {
	my $self 	= shift;
	my $string	= shift;
	
	#see https://bugs.launchpad.net/shutter/+bug/347821
	utf8::decode $string;
	
	return $string;
}

sub usage {
	my $self = shift;

	print "shutter [options]\n";
	print "Available options:\n\n"
		. "Capture:\n"
		. "--select (starts Shutter in selection mode)\n"
		. "--full (starts Shutter and takes a full screen screenshot directly)\n"
		. "--window (starts Shutter in window selection mode)\n"
		. "--awindow (capture the active window)\n"
		. "--section (starts Shutter in section selection mode)\n"
		. "--menu (starts Shutter in menu selection mode)\n"
		. "--tooltip (starts Shutter in tooltip selection mode)\n"
		. "--web (starts Shutter in web capture mode)\n\n"
		.

		"Application:\n"
		. "--min_at_startup (starts Shutter minimized to tray)\n"
		. "--clear_cache (clears cache, e.g. installed plugins, at startup)\n"
		. "--debug (prints a lot of debugging information to STDOUT)\n"
		. "--disable_systray (disable systray icon)\n"
		. "--version (displays version information)\n"
		. "--help (displays this help)\n";

	return TRUE;
}

1;