1 package SL::Layout::Base;
4 use parent qw(Rose::Object);
6 use List::MoreUtils qw(uniq);
9 use Rose::Object::MakeMethods::Generic (
10 'scalar --get_set_init' => [ qw(menu auto_reload_resources_param) ],
11 'scalar' => qw(focus),
13 'add_stylesheets_inline' => { interface => 'add', hash_key => 'stylesheets_inline' },
14 'add_javascripts_inline' => { interface => 'add', hash_key => 'javascripts_inline' },
15 'sub_layouts', => { interface => 'get_set_init' },
16 'add_sub_layouts' => { interface => 'add', hash_key => 'sub_layouts' },
26 my ($class, @slurp) = @_;
28 my $self = $class->SUPER::new(@slurp);
32 SL::Menu->new('user');
35 sub init_auto_reload_resources_param {
36 return '' unless $::lx_office_conf{debug}->{auto_reload_resources};
37 return sprintf('?rand=%d-%d-%d', Time::HiRes::gettimeofday(), int(rand 1000000000000));
40 ##########################################
41 # inheritable/overridable
42 ##########################################
45 join '', map { $_->pre_content } $_[0]->sub_layouts;
49 join '', map { $_->start_content } $_[0]->sub_layouts;
53 join '', map { $_->end_content } $_[0]->sub_layouts;
57 join '', map { $_->post_content } $_[0]->sub_layouts;
60 sub stylesheets_inline {
61 uniq ( map { $_->stylesheets_inline } $_[0]->sub_layouts ),
62 @{ $_[0]->{stylesheets_inline} || [] };
65 sub javascripts_inline {
66 uniq ( map { $_->javascripts_inline } $_[0]->sub_layouts ),
67 @{ $_[0]->{javascripts_inline} || [] };
70 sub init_sub_layouts { [] }
73 #########################################
75 ########################################
83 push @{ $self->{stylesheets} ||= [] }, @_ if @_;
84 @{ $self->{stylesheets} ||= [] };
89 my $css_path = $self->get_stylesheet_for_user;
91 return uniq grep { $_ } map { $self->_find_stylesheet($_, $css_path) }
92 $self->use_stylesheet, map { $_->stylesheets } $self->sub_layouts;
95 sub _find_stylesheet {
96 my ($self, $stylesheet, $css_path) = @_;
98 return "$css_path/$stylesheet" if -f "$css_path/$stylesheet";
99 return "css/$stylesheet" if -f "css/$stylesheet";
100 return $stylesheet if -f $stylesheet;
103 sub get_stylesheet_for_user {
104 my $css_path = 'css';
105 if (my $user_style = $::myconfig{stylesheet}) {
106 $user_style =~ s/\.css$//; # nuke trailing .css, this is a remnant of pre 2.7.0 stylesheet handling
107 if (-d "$css_path/$user_style" &&
108 -f "$css_path/$user_style/main.css") {
109 $css_path = "$css_path/$user_style";
111 $css_path = "$css_path/kivitendo";
114 $css_path = "$css_path/kivitendo";
120 sub add_javascripts {
126 push @{ $self->{javascripts} ||= [] }, @_ if @_;
127 @{ $self->{javascripts} ||= [] };
133 return uniq grep { $_ } map { $self->_find_javascript($_) }
134 map({ $_->javascripts } $self->sub_layouts), $self->use_javascript;
137 sub _find_javascript {
138 my ($self, $javascript) = @_;
140 return "js/$javascript" if -f "js/$javascript";
141 return $javascript if -f $javascript;
145 ############################################
146 # track state of form header
147 ############################################
150 $_[0]{_header_done} = 1;
169 SL::Layout::Base - Base class for layouts
173 package SL::Layout::MyLayout;
175 use parent qw(SL::Layout::Base);
179 For a description of the external interface of layouts in general see
180 L<SL::Layout::Dispatcher>.
182 This is a base class for layouts in general. It provides the basic interface
183 and some capabilities to extend and cascade layouts.
186 =head1 IMPLEMENTING LAYOUT CALLBACKS
188 There are eight callbacks (C<pre_content>, C<post_content>, C<start_content>,
189 C<end_content>, C<stylesheets>, C<stylesheets_inline>, C<javascripts>,
190 C<javascripts_inline>) which are documented in L<SL::Layout::Dispatcher>. If
191 you are writing a new simple layout, you can just override some of them like
194 package SL::Layout::MyEvilLayout;
197 '<h1>This is MY page now</h1>'
201 '<p align="right"><small><em>Brought to you by my own layout class</em></small></p>'
205 To preserve the sanitizing effects of C<stylesheets> and C<javascripts> you should instead do the following:
208 $_[0]->add_stylesheets(qw(mystyle1.css mystyle2.css);
209 $_[0]->SUPER::stylesheets;
212 If you want to add something to a different layout, you should write a sub
213 layout and add it to the other layouts.
218 Layouts can be aggregated, so that common elements can be used in different
219 layouts. Currently this is used for the L<None|SL::Layout::None> sub layout,
220 which contains a lot of the stylesheets and javascripts necessary. Another
221 example is the L<Top|SL::Layout::Top> layout, which is used to generate a
222 common top bar for all menu types.
224 To add a sub layout to your layout just overwrite the sub_layout method:
226 package SL::Layout::MyFinalLayout;
228 sub init_sub_layout {
230 SL::Layout::None->new,
231 SL::Layout::MyEvilLayout->new,
235 You can also add a sublayout at runtime:
237 $layout->add_sub_layout(SL::Layout::SideBar->new);
239 The standard implementation for the callbacks will see to it that the contents
240 of all sub layouts will get rendered.
243 =head1 COMBINING SUB LAYOUTS AND OWN BEHAVIOUR
245 This is still somewhat rough, and improvements are welcome.
247 For the C<*_content> callbacks this works if you just remember to dispatch to the base method:
250 return $_[0]->render_status_bar .
251 $_[0]->SUPER::post_content
254 For the stylesheet and javascript callbacks things are hard, because of the
255 backwards compatibility, and the built-in sanity checks. The best way currently
256 is to just add your content and dispatch to the base method.
259 $_[0]->add_stylesheets(qw(mystyle1.css mystyle2.css);
260 $_[0]->SUPER::stylesheets;
263 =head1 GORY DETAILS ABOUT JAVASCRIPT AND STYLESHEET OVERLOADING
265 The original code used to store one stylesheet in C<< $form->{stylesheet} >> and
266 allowed/expected authors of potential C<bin/mozilla/> controllers to change
267 that into their own modified stylesheet.
269 This was at some point cleaned up into a method C<use stylesheet> which took a
270 string of space separated stylesheets and processed them into the response.
272 A lot of controllers are still using this method so the layout interface
273 supports it to change as little controller code as possible, while providing the
274 more intuitive C<add_stylesheets> method.
276 At the same time the following things need to be possible:
284 $layout->add_stylesheets(...)
286 Since add_stylesheets adds to C<< $self->{stylesheets} >> there must be a way to read
287 from it. Currently this is the deprecated C<use_stylesheet>.
293 A leaf layout should be able to override a callback to return a list.
299 C<stylesheets> needs to retain its sanitizing behaviour.
305 The standard implementation should be able to collect from sub layouts.
309 Preserving Inclusion Order
311 Since there is currently no standard way of mixing own content and including
312 sub layouts, this has to be done manually. Certain things like jquery get added
313 in L<SL::Layout::None> so that they get rendered first.
317 The current implementation provides no good candidate for overriding in sub
318 classes, which should be changed. The other points work pretty well.
322 None yet, if you don't count the horrible stylesheet/javascript interface.
326 Sven Schöling E<lt>s.schoeling@linet-services.deE<gt>