Class: Spider::Template

Inherits:
Object show all
Includes:
Logger
Defined in:
lib/spiderfw/templates/template.rb

Overview

This class manages SHTML templates.

Direct Known Subclasses

Layout

Constant Summary collapse

ExpressionOutputRegexp = 
/\{?\{\s([^\s].*?)\s\}\}?/
GettextRegexp = 
/([snp][snp]?)?_\(([^\)]+)?\)(\s%\s([^\s,]+(?:,\s*\S+\s*)?))?/
ERBRegexp = 
/(<%(.+)?%>)/
SceneVarRegexp = 
/@(\w[\w\d_]+)/
@@registered = 
{}
@@widget_plugins = 
{}
@@namespaces = 
{}
@@overrides = 
['content', 'override', 'override-content', 'override-attr', 'append-attr',
'append', 'prepend', 'delete', 'before', 'after']
@@asset_types = 
{
    :css => {},
    :js => {},
    :less => {:processor => :Less}
}

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Logger

add, check_request_level, close, close_all, datetime_format, datetime_format=, #debug, debug, debug?, #debug?, enquire_loggers, #error, error, #error?, error?, fatal, #fatal, fatal?, #fatal?, info, #info, info?, #info?, #log, log, method_missing, open, reopen, request_level, send_to_loggers, set_request_level, unknown, #unknown, warn, #warn, warn?, #warn?

Constructor Details

#initialize(path = nil) ⇒ Template

Returns a new instance of Template.



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# File 'lib/spiderfw/templates/template.rb', line 226

def initialize(path=nil)
    @path = path
    @widgets = {}
    @subtemplates = {}
    @widget_templates = []
    @subtemplate_owners = {}
    @id_path = []
    @assets = []
    @content = {}
    @dependencies = []
    @overrides = []
    @widgets_overrides = {}
    @widget_procs = {}
    @runtime_overrides = []
end

Instance Attribute Details

#_action ⇒ Object

Returns the value of attribute _action.



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# File 'lib/spiderfw/templates/template.rb', line 24

def _action
  @_action
end

#_action_to ⇒ Object

Returns the value of attribute _action_to.



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# File 'lib/spiderfw/templates/template.rb', line 24

def _action_to
  @_action_to
end

#_widget_action ⇒ Object

Returns the value of attribute _widget_action.



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# File 'lib/spiderfw/templates/template.rb', line 24

def _widget_action
  @_widget_action
end

#asset_profiles ⇒ Object

Returns the value of attribute asset_profiles.



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# File 'lib/spiderfw/templates/template.rb', line 31

def asset_profiles
  @asset_profiles
end

#assets ⇒ Object

Returns the value of attribute assets.



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# File 'lib/spiderfw/templates/template.rb', line 28

def assets
  @assets
end

#compiled ⇒ Object

Returns the value of attribute compiled.



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# File 'lib/spiderfw/templates/template.rb', line 25

def compiled
  @compiled
end

#content ⇒ Object (readonly)

Returns the value of attribute content.



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# File 'lib/spiderfw/templates/template.rb', line 30

def content
  @content
end

#definer_class ⇒ Object

Returns the value of attribute definer_class.



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# File 'lib/spiderfw/templates/template.rb', line 26

def definer_class
  @definer_class
end

#id_path ⇒ Object

Returns the value of attribute id_path.



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# File 'lib/spiderfw/templates/template.rb', line 25

def id_path
  @id_path
end

#mode ⇒ Object

:widget, …



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# File 'lib/spiderfw/templates/template.rb', line 27

def mode
  @mode
end

#overrides ⇒ Object (readonly)

Returns the value of attribute overrides.



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# File 'lib/spiderfw/templates/template.rb', line 30

def overrides
  @overrides
end

#owner ⇒ Object

Returns the value of attribute owner.



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# File 'lib/spiderfw/templates/template.rb', line 26

def owner
  @owner
end

#owner_class ⇒ Object

Returns the value of attribute owner_class.



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# File 'lib/spiderfw/templates/template.rb', line 26

def owner_class
  @owner_class
end

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/spiderfw/templates/template.rb', line 30

def path
  @path
end

#request ⇒ Object

Returns the value of attribute request.



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# File 'lib/spiderfw/templates/template.rb', line 26

def request
  @request
end

#response ⇒ Object

Returns the value of attribute response.



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# File 'lib/spiderfw/templates/template.rb', line 26

def response
  @response
end

#runtime_overrides ⇒ Object

Returns the value of attribute runtime_overrides.



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# File 'lib/spiderfw/templates/template.rb', line 29

def runtime_overrides
  @runtime_overrides
end

#subtemplate_of ⇒ Object

Returns the value of attribute subtemplate_of.



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# File 'lib/spiderfw/templates/template.rb', line 32

def subtemplate_of
  @subtemplate_of
end

#subtemplates ⇒ Object (readonly)

Returns the value of attribute subtemplates.



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# File 'lib/spiderfw/templates/template.rb', line 30

def subtemplates
  @subtemplates
end

#widgets ⇒ Object

Returns the value of attribute widgets.



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# File 'lib/spiderfw/templates/template.rb', line 25

def widgets
  @widgets
end

Class Method Details

.allow_blocks(*tags) ⇒ Object

Sets allowed blocks



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# File 'lib/spiderfw/templates/template.rb', line 57

def allow_blocks(*tags) # :nodoc:
    @allowed_blocks = tags
end

.allowed_blocks ⇒ Object

Returns allowed blocks



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# File 'lib/spiderfw/templates/template.rb', line 62

def allowed_blocks # :nodoc:
    @allowed_blocks
end

.asset_types ⇒ Object

:nodoc:



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# File 'lib/spiderfw/templates/template.rb', line 66

def asset_types # :nodoc:
    @@asset_types
end

.cache ⇒ Object

Returns the class TemplateCache instance



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# File 'lib/spiderfw/templates/template.rb', line 52

def cache
    @@cache ||= TemplateCache.new(self.cache_path)
end

.cache_path ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 48

def cache_path
    File.join(Spider.paths[:var], 'cache', 'templates')
end

.define_named_asset(name, assets, options = {}) ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 127

def define_named_asset(name, assets, options={})
    @named_assets ||= {}
    @named_assets[name] = { :assets => assets, :options => options }
end

.define_runtime_asset(name, &proc) ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 136

def define_runtime_asset(name, &proc)
    @runtime_assets ||= {}
    @runtime_assets[name] = proc
end

.find_resource(path, cur_path = nil, owner_classes = nil, search_paths = []) ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 123

def find_resource(path, cur_path=nil, owner_classes=nil, search_paths=[])
    Spider.find_resource(:views, path, cur_path, owner_classes, search_paths)
end

.get_named_asset(name) ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 145

def get_named_asset(name)
    res = []
    ass = self.named_assets[name] 
    raise "Named asset #{name} is not defined" unless ass
    deps = ass[:options][:depends] if ass[:options]
    deps = [deps] if deps && !deps.is_a?(Array)
    if deps
        deps.each do |dep|
            res += get_named_asset(dep)
        end
    end
    ass[:assets].each do |a|
        attributes = a[3] || {}
        res << {:type => a[0], :src => a[1], :app => a[2]}.merge(attributes)
    end
    res
end

.get_registered_class(name) ⇒ Object

Returns the Class registered for the given tag.



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# File 'lib/spiderfw/templates/template.rb', line 106

def get_registered_class(name)
    if @@registered[name]
        klass = @@registered[name]
    else
        ns, tag = name.split(':')
        klass = @@namespaces[ns].get_tag(tag) if tag && @@namespaces[ns]
    end
    return nil unless klass
    klass = const_get_full(klass) if klass.is_a?(Symbol)
    return klass
end

.load(path) ⇒ Object

Returns a new instance, loading path.

Raises:

  • (RuntimeError) 


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# File 'lib/spiderfw/templates/template.rb', line 71

def load(path)
    raise RuntimeError, "Template #{path} does not exist" unless File.exist?(path)
    template = self.new(path)
    template.load(path)
    return template
end

.named_assets ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 132

def named_assets
    @named_assets || {}
end

.override_tags ⇒ Object

An array of possible override tags. Overrides may be used when placing a widget in a template, or when including another template. All except tpl:content may have the search attribute, that is a CSS or XPath expression specifing  the nodes to override. If the search attribute is missing, the override will be applied to the root node.

Example:

<div class="my_widget_template">
  <div class="a">aaa</div>
  <div class="b">bbb</div>
</div>

and

<div class="my_template">
  <my:widget id="my_widget_instance">
     <tpl:override search=".b">bbb and a c</tpl:override>
  </my:widget>
</div>

will result in the widget using the template

<div class="my_widget_template">
  <div class="a">aaa</div>
  <div class="b">bbb and c</div>
</div>

The tags are in the tpl namespace. *<tpl:content [name=‘…’] />* overrides the content of the found element.

If name is given, will override the named content found in the
original template.

*<tpl:override />* replaces the found nodes with given content *<tpl:override-attr name=‘…’ value=‘…’ />* overrides the given attribute *<tpl:append />* appends the given content to the container *<tpl:prepend />* prepends the given content *<tpl:delete />* removes the found nodes *<tpl:before />* inserts the given content before the found nodes *<tpl:after />* inserts the given content after the found nodes *<tpl:content name=“content-name” />* replaces a <tpl:placeholder> with the same name



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# File 'lib/spiderfw/templates/template.rb', line 201

def override_tags
    @@overrides
end

.parse_asset_element(el) ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 205

def parse_asset_element(el)
    h = {}
    el.attributes.to_hash.each do |k, v|
        h[k.to_sym] = v
    end
    h
    # end
    # {
    #     :type => el.get_attribute('type'),
    #     :src => el.get_attribute('src'),
    #     :attributes => el.attributes.to_hash
    # }
end

.real_path(path, cur_path = nil, owner_classes = nil, search_paths = []) ⇒ Object

Returns the view path (see #Spider::find_asset)



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# File 'lib/spiderfw/templates/template.rb', line 119

def real_path(path, cur_path=nil, owner_classes=nil, search_paths=[])
    Spider.find_resource_path(:views, path, cur_path, owner_classes, search_paths)
end

.register(tag, symbol_or_class) ⇒ Object

Registers a tag



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# File 'lib/spiderfw/templates/template.rb', line 79

def register(tag, symbol_or_class)
    @@registered[tag] = symbol_or_class
end

.register_namespace(ns, mod) ⇒ Object

Registers a namespace (mod should probably be a Spider::App, and must respond to get_tag and has_tag? methods).



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# File 'lib/spiderfw/templates/template.rb', line 101

def register_namespace(ns, mod)
    @@namespaces[ns] = mod
end

.registered ⇒ Object

Returns an hash of registered tags.



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# File 'lib/spiderfw/templates/template.rb', line 84

def registered
    @@registered
end

.registered?(tag) ⇒ Boolean

Checks if the tag is registered.

Returns:

  • (Boolean) 


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# File 'lib/spiderfw/templates/template.rb', line 89

def registered?(tag)
    return true if @@registered[tag]
    ns, tag = tag.split(':')
    if tag # that is, if there is a ns
        return false unless @@namespaces[ns]
        return @@namespaces[ns].has_tag?(tag)
    end
    return false
end

.runtime_assets ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 141

def runtime_assets
    @runtime_assets || {}
end

.scan_scene_vars(str) {|:plain, scanner.rest| ... } ⇒ Object

Yields:

  • (:plain, scanner.rest) 


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# File 'lib/spiderfw/templates/template.rb', line 980

def self.scan_scene_vars(str)
    scanner = ::StringScanner.new(str)
    pos = 0
    while scanner.scan_until(SceneVarRegexp)
        text = scanner.pre_match[pos..-1]
        yield :plain, text, text if text &&  text.length > 0
        pos = scanner.pos
        yield :var, scanner.matched[1..-1]
    end
    yield :plain, scanner.rest
end

.scan_text(text) {|:plain, scanner.rest, scanner.rest| ... } ⇒ Object

Yields:

  • (:plain, scanner.rest, scanner.rest) 


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# File 'lib/spiderfw/templates/template.rb', line 953

def self.scan_text(text)
    text = text.gsub(/\302\240/u, ' ') # remove annoying fake space
    scanner = ::StringScanner.new(text)
    pos = 0
    c = ""
    while scanner.scan_until(Regexp.union(ExpressionOutputRegexp, GettextRegexp, ERBRegexp))
        t = scanner.pre_match[pos..-1]
        pos = scanner.pos
        yield :plain, t, t if t && t.length > 0
        case scanner.matched
        when ExpressionOutputRegexp
            if scanner.matched[1].chr == '{'
                yield :escaped_expr, $1, scanner.matched
            else
                yield :expr, $1, scanner.matched
            end
        when GettextRegexp
            gt = {:val => $2, :func => $1}
            gt[:vars] = $4 if $3 # interpolated vars
            yield :gettext, gt, scanner.matched
        when ERBRegexp
            yield :erb, $1, scanner.matched
        end
    end
    yield :plain, scanner.rest, scanner.rest
end

Instance Method Details

#add_overrides(overrides) ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 793

def add_overrides(overrides)
    overrides.each do |ov|
        w = ov.get_attribute('widget')
        if w
            first, rest = w.split('/', 2)
            if rest
                ov.set_attribute('widget', rest)
            else
                ov.remove_attribute('widget')
            end
            @widgets_overrides[first] ||= []
            @widgets_overrides[first] << ov
        else
            @overrides << ov
        end
    end
end

#add_subtemplate(id, template, owner) ⇒ Object

:nodoc:



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# File 'lib/spiderfw/templates/template.rb', line 773

def add_subtemplate(id, template, owner) # :nodoc:
    @subtemplates[id] = template
    @subtemplate_owners[id] = owner
end

#add_widget(id, widget, attributes = nil, content = nil, template = nil) ⇒ Object

Adds a widget instance to the template. This method is usually not called directly; widgets are added during the template init phase.



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# File 'lib/spiderfw/templates/template.rb', line 650

def add_widget(id, widget, attributes=nil, content=nil, template=nil)
    @widgets[id.to_sym] ||= widget
    widget.id = id
    widget.id_path = @id_path + [id]
    if attributes # don't use merge to trigger custom []=(k, v) method
        attributes.each{ |k, v| widget.attributes[k] = v }
    end
    widget.containing_template = self
    widget.template = template if template
    widget.parent = @owner
    widget.parse_runtime_content_xml(content, @path) if content
    if @widget_procs[id.to_sym]
        @widget_procs[id.to_sym].each do |wp|
            apply_widget_proc(widget, wp)
        end
    end
    widget
end

#add_widget_template(template, owner_class) ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 778

def add_widget_template(template, owner_class)
    template.owner_class = owner_class
    @widget_templates << template
end

#apply_override(el, override) ⇒ Object

Applies an override to an (Hpricot) element.



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# File 'lib/spiderfw/templates/template.rb', line 832

def apply_override(el, override)
    if override.is_a?(Proc)
        return override.call(el)
    end
    search_string = override.get_attribute('search')
    override.name = 'tpl:override-content' if override.name == 'tpl:inline-override'
    if search_string
        # # Fix Hpricot bug!
        # search_string.gsub!(/nth-child\((\d+)\)/) do |match|
        #     "nth-child(#{$1.to_i-2})"
        # end
        found = el.parent.search(search_string)
    elsif override.name == 'tpl:content'
        found = el.search("tpl:placeholder[@name='#{override.get_attribute('name')}']")
    else
        if ['sp:template'].include?(el.name)
            found = el.children.select{ |child| child.is_a?(Hpricot::Elem) }
        else
            found = [el]
        end
    end
    
    if override.name == 'tpl:delete'
        found.remove
    else
        td = nil
        orig_td = nil
        if @extended_app
            td = @definer_class.respond_to?(:app) ? @definer_class.app.gettext_domain : nil
            orig_td = @extended_app.gettext_domain
        elsif @subtemplate_of
            td = @subtemplate_of.respond_to?(:app) ? @subtemplate_of.app.gettext_domain : nil
            orig_td = @definer_class.respond_to?(:app) ? @definer_class.app.gettext_domain : nil
        end
        if td && orig_td && td != orig_td
            override.innerHTML = '<tpl:pass tpl:text-domain="'+td+'">'+override.innerHTML+'</tpl:pass>'                
        end
        found.each do |f|
            o_doc = nil
            if override.name == 'tpl:override-content'
                overridden = f.innerHTML
                f.innerHTML = override.innerHTML
                f.search('tpl:overridden').each do |o| 
                    ovr = overridden
                    if o_search = o.get_attribute('search')
                        o_doc ||= Hpricot("<o>#{overridden}</o>")
                        ovr = o_doc.root.search(o_search).to_html
                    end
                    if orig_td
                        ovr = '<tpl:pass tpl:text-domain="'+orig_td+'">'+ovr+'</tpl:pass>'
                    end
                    o.swap(ovr)
                end
            elsif override.name == 'tpl:override' || override.name == 'tpl:content'
                if orig_td
                    f.set_attribute('tpl:text-domain', orig_td)
                end
                overridden = f.to_html
                parent = f.parent
                if f == el
                    f.innerHTML = override.innerHTML
                else
                    f.swap(override.innerHTML)
                end
                parent.search('tpl:overridden').each do |o| 
                    ovr = overridden
                    if o_search = o.get_attribute('search')
                        o_doc ||= Hpricot("<o>#{overridden}</o>")
                        ovr = o_doc.root.search(o_search).to_html
                    end
                    o.swap(ovr)
                end
            elsif override.name == 'tpl:override-attr'
                f.set_attribute(override.get_attribute("name"), override.get_attribute("value"))
            elsif override.name == 'tpl:append-attr'
                a = f.get_attribute(override.get_attribute("name")) || ''
                a += ' ' unless a.blank?
                a += override.get_attribute("value")
                f.set_attribute(override.get_attribute("name"), a)
            elsif override.name == 'tpl:append'
                f.innerHTML += override.innerHTML
            elsif override.name == 'tpl:prepend'
                f.innerHTML = override.innerHTML + f.innerHTML
            elsif override.name == 'tpl:before'
                f.before(override.innerHTML)
            elsif override.name == 'tpl:after'
                f.after(override.innerHTML)
            end

        end
    end
end

#apply_overrides(el) ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 815

def apply_overrides(el)
    info_els = nil
    if el.children
        info_els = Hpricot::Elements[*(el.children_of_type('tpl:asset')+
            el.children_of_type('tpl:assets'))]
        info_els.remove
    end
    if @overrides
        @overrides.each{ |o| apply_override(el, o) }
    end
    if info_els
        el.innerHTML = info_els.to_s + el.innerHTML
    end
    el
end

#apply_widget_proc(widget, wp) ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 936

def apply_widget_proc(widget, wp)
    if wp[:target]
        widget.with_widget(wp[:target], &wp[:proc])
    else
        widget.instance_eval(wp[:proc])
    end
end

#bind(scene) ⇒ Object

Sets the scene.



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# File 'lib/spiderfw/templates/template.rb', line 243

def bind(scene)
    @scene = scene
    return self
end

#compile(options = {}) ⇒ Object

Recompiles the template; returns a CompiledTemplate.



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# File 'lib/spiderfw/templates/template.rb', line 276

def compile(options={})
    compiled = CompiledTemplate.new
    compiled.source_path = @path
    doc = open(@path){ |f| Hpricot.XML(f) }
    root = get_el(doc)
    process_tags(root)
    apply_overrides(root)
    root.search('tpl:placeholder').remove # remove empty placeholders
    owner_class = @owner ? @owner.class : @owner_class
    @assets += owner_class.assets if owner_class
    res =  root.children ? root.children_of_type('tpl:asset') : []
    res_init = ""
    res.each do |r|
        #se ho l'attributo runtime carico il file se il runtime coincide o non viene specificato
        @assets << Spider::Template.parse_asset_element(r) if (r.get_attribute("runmode") == Spider.runmode || r.get_attribute("runmode").nil?)
        r.set_attribute('class', 'to_delete')
    end
    new_assets = []
    @assets.each do |ass|
        a = parse_asset(ass[:type], ass[:src], ass)
        new_assets += a unless new_assets.include?(a) #non inserisco duplicati
    end
    @assets = new_assets
    root.search('.to_delete').remove
    root.search('tpl:assets').each do |ass|
        if wattr = ass.get_attribute('widgets')
            wattr.split(/,\s*/).each do |w|
                w_templates = nil
                if w =~ /(\.+)\((.+)\)/
                    w = $1
                    w_templates = $2.split('|')
                end
                klass = Spider::Template.get_registered_class(w)
                unless klass
                    Spider.logger.warn("tpl:assets requested non existent widget #{w}")
                    next
                end
                w_templates ||= [klass.default_template]
                w_templates.each do |wt| 
                    t = klass.load_template(wt)
                    add_widget_template(t, klass)
                end
            end
        elsif sattr = ass.get_attribute('src')
            sattr.split(/,\s*/).each do |s|
                s_template = Spider::Template.new(s)
                s_template.owner = @owner
                s_template.definer_class = @definer_class
                s_template.load(s)
                @assets = s_template.assets + @assets
            end

        end
    end
    root.search('tpl:assets').remove
    root_block = TemplateBlocks.parse_element(root, self.class.allowed_blocks, self)
    if doc.children && doc.children[0].is_a?(Hpricot::DocType)
        root_block.doctype = doc.children[0]
        options[:doctype] = DocType.new(root_block.doctype)
    else
        options[:doctype] ||= DocType.new(Spider.conf.get('template.default_doctype'))
    end
    options[:root] = true
    options[:owner] = @owner
    options[:owner_class] = @owner_class || @owner.class
    options[:template_path] = @path
    options[:template] = self
    compiled.block = root_block.compile(options)
    subtemplates.each do |id, sub|
        sub.owner_class = @subtemplate_owners[id]
        sub.subtemplate_of = options[:owner_class]
        compiled.subtemplates[id] = sub.compile(options.merge({:mode => :widget})) # FIXME! :mode => :widget is wrong, it's just a quick kludge
        @assets += compiled.subtemplates[id].assets
    end
    @widget_templates.each do |wt|
        wt.mode = :widget
        wt.load
        # sub_c = sub.compile(options.merge({:mode => :widget}))
        @assets = wt.compiled.assets + @assets
    end
    seen = {}
    # @assets.each_index do |i|
    #     ass = @assets[i]
    #     if ass[:name]
    # end
    #
    #rendo univoco all'inizio l'array per non caricare piu' volte lo stesso asset
    assets_univoci = @assets.uniq!
    @assets = ( assets_univoci.nil? ? @assets : assets_univoci )
    @assets.each do |ass|
        ass[:profiles] = ((ass[:profiles] || []) + @asset_profiles).uniq if @asset_profiles
        next if seen[ass.inspect]
        res_init += "@assets << #{ass.inspect}\n"
        # res_init += "@assets << {
        #     :type => :#{ass[:type]}, 
        #     :src => '#{ass[:src]}',
        #     :path => '#{ass[:path]}',
        #     :if => '#{ass[:if]}'"
        # res_init += ",\n :compiled => '#{ass[:compressed]}'" if ass[:compressed]
        # res_init += "}\n"
        seen[ass.inspect] = true
    end
    compiled.block.init_code = res_init + compiled.block.init_code
    compiled.devel_info["source.xml"] = root.to_html
    compiled.assets = @assets #(@assets + assets).uniq sono univoci e assets == @assets
    return compiled
end

#do_widgets_before ⇒ Object

Calls the before method of all widget instances.



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# File 'lib/spiderfw/templates/template.rb', line 690

def do_widgets_before
    @widgets.each do |id, w|
        act = (@_action_to == id) ? @_action : ''
        w.widget_before(act) unless w.before_done?
    end
end

#exec ⇒ Object

Does #do_widgets_before and then #run_widgets.



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# File 'lib/spiderfw/templates/template.rb', line 706

def exec
    do_widgets_before
    run_widgets
end

#find_widget(path) ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 669

def find_widget(path)
    return @widgets[path.to_sym]
end

#get_el(path_or_doc = nil) ⇒ Object

Returns the root node of the template at given path. Will apply overrides and process extends and inclusions.



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# File 'lib/spiderfw/templates/template.rb', line 486

def get_el(path_or_doc=nil)
    path = nil
    doc = nil
    if path_or_doc.is_a?(Hpricot::Doc)
        doc = path_or_doc
        path = @path
    else
        path = path_or_doc
        path ||= @path
        doc = open(path){ |f| Hpricot.XML(f) }
    end
    root = doc.root
    overrides = []
    orig_overrides = @overrides
    @overrides = []
    if root.children
        override_tags.each do |tag|
            overrides += root.children_of_type('tpl:'+tag)
        end
    end
    overrides.each{ |o| o.set_attribute('class', 'to_delete') }
    root.search('.to_delete').remove
    add_overrides overrides
    our_domain = nil
    if @definer_class
        our_domain = @definer_class.respond_to?(:app) ? @definer_class.app.gettext_domain : 'spider'
    end
    @overrides += orig_overrides
    if root.name == 'tpl:extend'
        orig_overrides = @overrides

        @overrides = []
        ext_src = root.get_attribute('src')
        ext_app = root.get_attribute('app')
        ext_widget = root.get_attribute('widget')
        if ext_widget
            ext_widget = Spider::Template.get_registered_class(ext_widget)
            ext_src ||= ext_widget.default_template
            ext_owner = ext_widget
            ext_app = ext_widget.app
        elsif ext_app
            ext_app = Spider.apps_by_path[ext_app]
            ext_owner = ext_app
        else 
            ext_owner = @owner.class
            ext_app = ext_owner.app
        end
        @extended_app = ext_app
        ext_search_paths = nil
        if ext_owner && ext_owner.respond_to?(:template_paths)
            ext_search_paths = ext_owner.template_paths
        end
        ext = self.class.real_path(ext_src, path, ext_owner, ext_search_paths)
        raise "Extended template #{ext_src} not found (search path #{path}, owner #{ext_owner}, search paths #{ext_search_paths.inspect}" unless ext
        assets = []
        if root.children
            assets = root.children_of_type('tpl:asset')
            assets += root.children_of_type('tpl:assets')
        end
        @dependencies << ext
        root = get_el(ext)
        if ext_app.gettext_domain != our_domain
            root.set_attribute('tpl:text-domain', ext_app.gettext_domain)
        end
        root.children_of_type('tpl:asset').each do |ass|
            ass_src = ass.get_attribute('src')
            if ass_src && ass_src[0].chr != '/'
                # ass.set_attribute('src', "/#{ext_app.relative_path}/#{ass_src}")
                ass.set_attribute('app', ext_app.relative_path) if ass.get_attribute('app').blank?
            end
        end
        @overrides += orig_overrides
        if assets && !assets.empty?
            assets.each do |ass|
                root.innerHTML += ass.to_html
            end
        end
    else
        assets_html = ""
        root.search('tpl:include').each do |incl|
            resource = Spider.find_resource(:views, incl.get_attribute('src'), @path, [@owner.class, @definer_class])
            src = resource.path
            raise "Template #{@path} didn't find included '#{incl.get_attribute('src')}'" unless src
            @dependencies << src
            incl_el = self.get_el(src)
            assets = incl_el.children ? incl_el.children_of_type('tpl:asset') : []
            assets.each{ |ass| 
                ass.set_attribute('class', 'to_delete')
                ass_src = ass.get_attribute('src')
                if ass_src && ass_src[0].chr != '/'
                    if resource.definer.is_a?(Spider::Home)
                        ass.set_attribute('home', 'true')
                    else
                    # ass.set_attribute('src', "/#{resource.definer.relative_path}/#{ass_src}")
                        res_rel_path = if resource.definer.respond_to?(:app)
                            resource.definer.app.relative_path
                        elsif resource.definer.respond_to?(:relative_path)
                            resource.definer.relative_path
                        else
                            nil
                        end
                        ass.set_attribute('app', res_rel_path) if res_rel_path
                    end
                end
                assets_html += ass.to_html 
            }
            if incl_el.children
                incl_el.children_of_type('tpl:assets').each do |asss|
                    assets_html += asss.to_html
                end
            end
            incl_el.search('.to_delete').remove
            td = resource.definer.respond_to?(:app) ? resource.definer.app.gettext_domain : 'spider'
            if td != our_domain
                incl_el.set_attribute('tpl:text-domain', td)
            end
            incl.swap(incl_el.to_html)
        end
        
        root.search('.to_delete').remove
        root.innerHTML = assets_html + root.innerHTML
    end
    return root
end

#init(scene) ⇒ Object

Does the init phase (evals the template’s compiled init.rb).



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# File 'lib/spiderfw/templates/template.rb', line 674

def init(scene)
#            Spider::Logger.debug("Template #{@path} INIT")
    load unless loaded?
    # debug("Template #{@path} init")
    # debug(@compiled.init_code)
    @scene = scene
    instance_eval(@compiled.init_code, @compiled.cache_path+'/init.rb')
    @init_done = true
end

#init_done? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/spiderfw/templates/template.rb', line 685

def init_done?
    @init_done
end

#inspect ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 769

def inspect
    self.class.to_s
end

#load(path = nil) ⇒ Object

Loads the compiled template (from cache if available).



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# File 'lib/spiderfw/templates/template.rb', line 250

def load(path=nil)
    @path = real_path(path) if path
    @path = File.expand_path(@path)
#            debug("TEMPLATE LOADING #{@path}")
    cache_path = @path.sub(Spider.paths[:root], 'ROOT').sub(Spider.paths[:spider], 'SPIDER')
    unless @runtime_overrides.empty?
        cache_path_dir = File.dirname(cache_path)
        cache_path_file = File.basename(cache_path, '.shtml')
        suffix = @runtime_overrides.map{ |ro| ro[0].to_s }.sort.join('+')
        cache_path = cache_path_dir+'/'+cache_path_file+'+'+suffix+'.shtml'
        @runtime_overrides.each do |ro|
            @overrides += ro[1]
            @dependencies << ro[2]
        end
    end
    @compiled = self.class.cache.fetch(cache_path) do
        begin
            compile(:mode => @mode)
        rescue Exception
            Spider.logger.error("Failed compilation of template #{@path}:")
            raise
        end
    end
end

#load_subtemplate(id, options = {}) ⇒ Object

:nodoc:



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# File 'lib/spiderfw/templates/template.rb', line 784

def load_subtemplate(id, options={}) # :nodoc:
    load unless loaded?
    return nil unless @compiled.subtemplates[id]
    t = Template.new
    t.asset_profiles = options[:asset_profiles] if options[:asset_profiles]
    t.compiled = @compiled.subtemplates[id]
    return t
end

#loaded? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/spiderfw/templates/template.rb', line 643

def loaded?
    @compiled ? true : false
end

#override_tags ⇒ Object

Returns the class override_tags



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# File 'lib/spiderfw/templates/template.rb', line 222

def override_tags
    @@overrides
end

#overrides_for(widget_id) ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 811

def overrides_for(widget_id)
    @widgets_overrides[widget_id] || []
end

#parse_asset(type, src, attributes = {}) ⇒ Object

Processes an asset. Returns an hash with :type, :src, :path.



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# File 'lib/spiderfw/templates/template.rb', line 385

def parse_asset(type, src, attributes={})
    # FIXME: use Spider.find_asset ?
    type = type.to_sym if type
    ass = {:type => type}
    if attributes[:name]
        named = Spider::Template.get_named_asset(attributes[:name])
        raise "Can't find named asset #{attributes[:name]}" unless named
        if attributes[:profiles]
            named.each{ |nmdass| nmdass[:profiles] = attributes[:profiles] }
        end
        return named.map{ |nmdass| 
            parse_asset(nmdass[:type], nmdass[:src], nmdass)
        }.flatten
    end
    if attributes[:profiles]
        ass[:profiles] = attributes[:profiles].split(/,\s*/).map{ |p| p.to_sym }
    end
    if attributes[:app] == :runtime
        ass[:runtime] = src
        return [ass]
    end
    if attributes[:app]
        asset_owner = attributes[:app]
        asset_owner = Spider.apps_by_path[asset_owner] unless asset_owner.is_a?(Module)
    elsif attributes[:home]
        asset_owner = Spider.home
    else
        asset_owner = (@owner ? @owner.class : @owner_class )
    end
    ass[:app] = asset_owner.app if asset_owner.respond_to?(:app)
    # FIXME! @definer_class is not correct for Spider::HomeController
    raise "Asset type not given for #{src}" unless type
    search_classes = [asset_owner]
    search_classes << @definer_class if @definer_class
    search_classes << Spider.home
    dfnr = @definer_class.superclass if @definer_class && @definer_class.respond_to?(:superclass)
    while dfnr && dfnr < Spider::Widget
        search_classes << dfnr
        dfnr = dfnr.respond_to?(:superclass) ? dfnr.superclass : nil
    end
    res = Spider.find_resource(type.to_sym, src, @path, search_classes)
    raise "Resource #{src} of type #{type} not found" unless res.path
    controller = nil
    if res && res.definer
        controller = res.definer.controller
        if res.definer.is_a?(Spider::Home)
            ass[:app] = :home
        else
            ass[:app] = res.definer
        end
    elsif owner_class < Spider::Controller
        controller = owner_class
    end
    ass[:path] = res.path if res
    base_url = nil
    if controller.respond_to?(:pub_url)
        if src[0].chr == '/' 
            if controller <= Spider::HomeController
                src = src[(1+controller.pub_path.length)..-1]
            else
            # strips the app path from the src. FIXME: should probably be done somewhere else
                src = src[(2+controller.app.relative_path.length)..-1]
            end
        end
        base_url = controller.pub_url+'/'
        
    else
        base_url = ''
    end

    ass[:rel_path] = src
    ass[:src] = base_url + src
    ass_info = self.class.asset_types[type]
    if ass_info && ass_info[:processor]
        processor = TemplateAssets.const_get(ass_info[:processor])
        ass = processor.process(ass)
    end
    if cpr = attributes[:compressed] 
        if cpr == true || cpr == "true"
            ass[:compressed_path] = ass[:path]
            ass[:compressed_rel_path] = ass[:rel_path]
            ass[:compressed] = base_url + File.basename(ass[:path])
        else
            compressed_res = Spider.find_resource(type.to_sym, cpr, @path, [owner_class, @definer_class])
            ass[:compressed_path] = compressed_res.path
            ass[:compressed] = base_url+cpr
        end
    end
    ass[:no_compress] = attributes[:"no-compress"]
    ass[:copy_dir] = attributes[:copy_dir]
    ass[:copy_dir] = ass[:copy_dir] =~ /\d+/ ? ass[:copy_dir].to_i : true
    [:gettext, :media, :if_ie_lte, :cdn].each do |key|
        ass[key] = attributes[key] if attributes.key?(key)
    end

    ass[:order] = attributes[:order]
    return [ass]
end

#process_tags(el) ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 611

def process_tags(el)
    block = TemplateBlocks.get_block_type(el, true)
    raise "Bad html in #{@path}, can't parse" if el.is_a?(Hpricot::BogusETag)
    if block == :Tag
        sp_attributes = {}
        # FIXME: should use blocks instead
        el.attributes.to_hash.each do |key, value|
            if key[0..1] == 'sp'
                sp_attributes[key] = value
                el.remove_attribute(key)
            end
        end
        klass = Spider::Template.get_registered_class(el.name)
        tag = klass.new(el)
        res = process_tags(Hpricot(tag.render).root)
        sp_attributes.each{ |key, value| res.set_attribute(key, value) }
        return res
    else
        el.each_child do |child|
            next if child.is_a?(Hpricot::Text) || child.is_a?(Hpricot::Comment)
            el.replace_child(child, process_tags(child))
        end
    end
    return el
end

#real_path(path) ⇒ Object

The full path of a template mentioned in this one.



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# File 'lib/spiderfw/templates/template.rb', line 638

def real_path(path)
    self.class.real_path(path, File.dirname(@path), [@owner.class, @definer_class])
end

#render(scene = nil) ⇒ Object

Does the render phase. Will execute the following steps (if needed):

  • load

  • init

  • exec

  • eval the template’s compiled run code.



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# File 'lib/spiderfw/templates/template.rb', line 717

def render(scene=nil)
    prev_domain = nil
    if @definer_class
        td = @definer_class.respond_to?(:app) ? @definer_class.app.gettext_domain : 'spider'
        prev_domain = Spider::GetText.set_domain(td)
    end
    scene ||= @scene
    load unless loaded?
    init(scene) unless init_done?
    exec
    @content.merge!(@widgets)
    # if Spider.conf.get('template.safe')
    #     debug("RENDERING IN SAFE MODE!")
    #     debug(@compiled.run_code)
    #     # FIXME: must send header before safe mode
    #     current_thread = Thread.current
    #     t = Thread.new { 
    #         Thread.current[:stdout] = current_thread[:stdout]
    #         $SAFE = 4
    #         scene.instance_eval("def __run_template\n"[email protected]_code+"end\n", @compiled.cache_path+'/run.rb')
    #         scene.__run_template
    #         scene.__run_template do |widget|
    #             @content[widget].run
    #         end
    #     }
    #     t.join
    # else
    scene.instance_eval("def __run_template\n"+@compiled.run_code+"end\n", @compiled.cache_path+'/run.rb', 0)
    scene.__run_template do |yielded|
        if yielded == :_parent
            @owner.parent.template.content.merge!(@content)
            @owner.parent.template.run_block
        else
            @content[yielded].render if @content[yielded]
        end
    end
    Spider::GetText.restore_domain(prev_domain) if prev_domain
    # end
end

#run ⇒ Object

Alias for #render.



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# File 'lib/spiderfw/templates/template.rb', line 764

def run
    render(@scene)
end

#run_block ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 757

def run_block
    @scene.__run_block do |yielded, block|
        @content[yielded].render if @content[yielded]
    end
end

#run_widgets ⇒ Object

Calls the run method on all widget instances.



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# File 'lib/spiderfw/templates/template.rb', line 698

def run_widgets
    @widgets.each do |id, w|
        w.run if w.run? && !w.did_run?
    end
    
end

#with_widget(path, &proc) ⇒ Object 



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# File 'lib/spiderfw/templates/template.rb', line 926

def with_widget(path, &proc)
    first, rest = path.split('/', 2)
    @widget_procs[first.to_sym] ||= []
    wp = {:target => rest, :proc => proc }
    @widget_procs[first.to_sym] << wp
    if @widgets[first.to_sym]
        apply_widget_proc(@widgets[first.to_sym], wp)
    end
end