Class: HowtoDialog

Inherits:
Object
  • Object
show all
Includes:
BasicLogging, Translating
Defined in:
lib/gui/HowtoDialog.rb

Constant Summary collapse

PDFViewers = 
%w"firefox opera epiphany-browser"
@@GD = 
File::expand_path(File::dirname(__FILE__) ) + File::Separator
@@HOWTO = 
$PROG_DIR.dup << '../doc/gui_howto.pdf'

Constants included from BasicLogging

BasicLogging::DEBUG, BasicLogging::ERROR, BasicLogging::FATAL, BasicLogging::INFO, BasicLogging::Levels, BasicLogging::UNKNOWN, BasicLogging::WARN

Instance Attribute Summary

Attributes included from BasicLogging

#log_level, #target

Instance Method Summary collapse

Methods included from BasicLogging

is_muted?, #log, mute, #set_level, #set_target

Methods included from Translating

language, trl, #trl

Constructor Details

#initialize(options = {}) ⇒ HowtoDialog

Returns a new instance of HowtoDialog.



33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
 
# File 'lib/gui/HowtoDialog.rb', line 33

def initialize(options = {})
	@hdialog = Gtk::Dialog.new()
	reader_frame = Gtk::Frame.new(trl('Howto'))

	reader_vbox = Gtk::Box.new(:vertical, 5)
	reader_vbox.border_width = 5
	reader_hbox = Gtk::Box.new(:horizontal, 5)
	reader_hbox.border_width = 5

	bl_text = trl("Please name the command which starts your PDF viewer (e.g. qpdfview, acroread, evince, display ...).")
	reader_label = Gtk::Label.new(bl_text)
	reader_label.wrap = true
	@reader_entry = Gtk::Entry.new                                 
	@reader_entry.width_chars = 33
	@reader_entry.height_request = 25
	# Sabotage fix. “We, the Gods of GTK approve of this failure”
	# @reader_entry.text = $CONF.pdf_reader
	@reader_entry.text = find_reader()
	@bc_button = Gtk::Button.new()
	@bc_button.add(ButtonLabel.new(trl('_Choose'), "%s/gtk-open.xpm" %@@GD))

	reader_vbox.pack_start(reader_label, :expand => false)

	reader_hbox.pack_start(@reader_entry, :expand => false)
	reader_hbox.pack_start(@bc_button, :expand => false)
	reader_vbox.pack_start(reader_hbox, :expand => false)
	reader_frame.add(reader_vbox)

	button_box = Gtk::ButtonBox.new(:horizontal)
	button_box.layout_style = :start
	@cancel_button = Gtk::Button.new()
	@cancel_button.add(ButtonLabel.new(trl('_Cancel'), "%s/gtk-stop.xpm" %@@GD))
	@ok_button = Gtk::Button.new()
	@ok_button.add(ButtonLabel.new(trl('_Accept'), "%s/gtk-execute.xpm" %@@GD))

	button_box.pack_start(@ok_button, :expand => false)
	button_box.pack_start(@cancel_button, :expand => false)

	@hdialog.child.pack_start(reader_frame)
	@hdialog.child.pack_start(button_box)

	@bc_button.set_tooltip_text trl('Choose a PDF viewer')
	@reader_entry.set_tooltip_text trl('Command, which starts your PDF viewer')
	@cancel_button.set_tooltip_text trl('Close dialog')
	@ok_button.set_tooltip_text trl('Executes your PDF-viewer and shows the Howto manual')

	connect_buttons
	@hdialog.set_title('HOWTO: ' << CremeFraiche::prog_info[:app_name])
	@hdialog.child.show_all
	@hdialog.signal_connect('response') do |dlg, resp|
		debug("response %i emitted" %resp) 
		@adialog.destroy if(:cancel == resp) 
	end  
	if(options && options.keys.include?(:on_destroy))
		@hdialog.signal_connect('destroy') {options[:on_destroy].call() }
	end

	@hdialog.show
end

Instance Method Details

#choose_reader ⇒ Object 



97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
 
# File 'lib/gui/HowtoDialog.rb', line 97

def choose_reader
	dialog = Gtk::FileChooserDialog.new(:title => trl("set reader"),
					    :parent => nil,
					    :action => :open,
					    :buttons => [[:cancel, :cancel], [:accept, :accept]])

	if(@reader_entry.text && ! @reader_entry.text.empty?)
		debug('reader is ' << @reader_entry.text)
		dialog.filename = @reader_entry.text 
	end
	ret = dialog.run
	br = (ret == Gtk::ResponseType::ACCEPT ? dialog.filename : nil)
	dialog.destroy

	msg = File_Checking.file_check(br, [:exist?, :file?, :executable?]) if br   
	if(msg)
		error(msg) 
		msg_dialog(msg, DLG_ERROR) 
		br = nil
	end
	return br
end

#connect_buttons ⇒ Object 



120
121
122
123
124
125
126
127
128
129
130
131
132
 
# File 'lib/gui/HowtoDialog.rb', line 120

def connect_buttons
	@bc_button.signal_connect("clicked") do 
		br = choose_reader
		@reader_entry.text = br if br
	end

	@cancel_button.signal_connect("clicked") do
		@hdialog.destroy
	end
	@ok_button.signal_connect("clicked") do
		run_reader(@reader_entry.text) if @reader_entry.text
	end
end

#find_reader ⇒ Object 



93
94
95
 
# File 'lib/gui/HowtoDialog.rb', line 93

def find_reader
	PDFViewers.detect(''){|c| $Progs.include?(c)}
end

#msg_dialog(msg, type) ⇒ Object 



159
160
161
162
163
164
165
166
167
168
169
170
 
# File 'lib/gui/HowtoDialog.rb', line 159

def msg_dialog(msg, type)
	dialog = Gtk::MessageDialog.new(
					:parent => nil, 
					:flags => :destroy_with_parent,
					:type => type,
					:message => "%s: \"%s\"" %[Translating::trl(type.to_s.upcase), msg])

	dialog.set_title(DLG_INFO == type ? 'Info' : 'Error' )
	dialog.run
	dialog.destroy
	return msg
end

#run_reader(br) ⇒ Object 



134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
 
# File 'lib/gui/HowtoDialog.rb', line 134

def run_reader(br)
	msg = nil
	if(br && ! br.empty?)
		begin
			fork_sym = (RUBY_PLATFORM =~ /win/) ? '' : ' &'
			exec_command = "%s %s%s" %[br, @@HOWTO, fork_sym]
			debug "exec-command will be %s" %exec_command 
			hr = system exec_command
			if(!hr)
				msg = trl("Cannot open the PDF viewer!", "\n") 
				msg += trl("Please verify, that %s is correctly spelled or use another reader.", "\"#{br}\"") 
			else
				@hdialog.destroy
			end
		rescue Exception => ex
			msg = trl("Cannot open the PDF viewer %s", ex)
		end
	else
		msg = trl('No reader selected, skipping Howto.')
	end
	error(msg) if msg
	debug($?.to_s) if @log
	msg_dialog(msg, DLG_ERROR) if msg
end