Class: HelpBrowser

Inherits:
Gtk::ScrolledWindow
  • Object
show all
Defined in:
lib/ManqodHelp/HelpBrowser.rb

Overview

this file is part of manqod manqod is distributed under the CDDL licence the author of manqod is Dobai-Pataky Balint([email protected])

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(help) ⇒ HelpBrowser 



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# File 'lib/ManqodHelp/HelpBrowser.rb', line 7

def initialize(help)
  @help=help
  super()
  @item=nil
  @link_cursor = Gdk::Cursor.new(Gdk::Cursor::HAND2)
  @hover=false
  @items=Hash.new
  @text_view=Gtk::TextView.new(Gtk::TextBuffer.new(FormatTagTable.new(self))).set_editable(false)
  add_with_viewport(@text_view)
  @text_view.modify_font(Pango::FontDescription.new('Sans 12')).set_wrap_mode(Gtk::TextTag::WRAP_WORD)
  set_size_request(500,200)
  set_policy(Gtk::POLICY_NEVER,Gtk::POLICY_AUTOMATIC)
  
  @text_view.signal_connect('motion-notify-event'){|me, ev|
    x,y = me.window_to_buffer_coords(Gtk::TextView::WINDOW_WIDGET,ev.x,ev.y)
    iter=me.get_iter_at_location(x,y)

     onlink = false
     iter.tags.each{|t| onlink=true if t.link}

     if onlink != @hover
       @hover=onlink
       me.get_window(Gtk::TextView::WINDOW_TEXT).set_cursor(@hover ? @link_cursor : nil)
     end
    false
    }
    @text_view.signal_connect('visibility-notify-event'){|me,ev|
      me.get_window(Gtk::TextView::WINDOW_TEXT).set_cursor(@hover ? @link_cursor : nil)
      false
    }
end

Instance Attribute Details

#help ⇒ Object (readonly)

Returns the value of attribute help.



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# File 'lib/ManqodHelp/HelpBrowser.rb', line 38

def help
  @help
end

#item ⇒ Object (readonly)

Returns the value of attribute item.



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# File 'lib/ManqodHelp/HelpBrowser.rb', line 38

def item
  @item
end

#items ⇒ Object (readonly)

Returns the value of attribute items.



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# File 'lib/ManqodHelp/HelpBrowser.rb', line 38

def items
  @items
end

Instance Method Details

#add_item(item, description = "") ⇒ Object 



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# File 'lib/ManqodHelp/HelpBrowser.rb', line 83

def add_item(item,description="")
  unless @items.has_key?(item)
    @items[item]=description
    buffer.tag_table.add(item)
  end
  self
end

#add_text(ont) ⇒ Object 



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# File 'lib/ManqodHelp/HelpBrowser.rb', line 118

def add_text(ont)
    txt=ont.clone
    bounds=Hash.new
    cr=buffer.tag_table.markup_regexp
    while cr.source.length>0 && code=txt[cr]
      bounds[code]=Array.new unless bounds.has_key?(code)
      bounds[code].push(txt.indexU(code))
      txt[code]=""
    end
    buffer.insert_at_cursor(txt)
    bounds.each_pair{|code,b|
      if tag=buffer.tag_table.lookup_by_code(code)
        b.each_index{|i| buffer.apply_tag(tag,buffer.get_iter_at_offset(b[i]),buffer.get_iter_at_offset(b[i+1])) if (i.divmod(2)[1] == 0) && b[i+1] }
      end
    }
end

#apply_links ⇒ Object 



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# File 'lib/ManqodHelp/HelpBrowser.rb', line 67

def apply_links
  @items.each_key{|tag_name|
    if tag=buffer.tag_table.lookup(tag_name)
      txt=buffer.get_text
      i=-1
      while i=txt.indexU(tag_name,i+1)
        buffer.apply_tag(tag,buffer.get_iter_at_offset(i),buffer.get_iter_at_offset(i+tag_name.lengthU))
      end
    end
  }
end

#buffer ⇒ Object 



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# File 'lib/ManqodHelp/HelpBrowser.rb', line 40

def buffer
  @text_view.buffer
end

#clear_items ⇒ Object 



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# File 'lib/ManqodHelp/HelpBrowser.rb', line 91

def clear_items
  @items.clear
end

#empty ⇒ Object 



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# File 'lib/ManqodHelp/HelpBrowser.rb', line 78

def empty
  buffer.remove_all_tags(buffer.bounds[0],buffer.bounds[1])
  buffer.delete(buffer.bounds[0],buffer.bounds[1])
end

#load_index ⇒ Object 



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# File 'lib/ManqodHelp/HelpBrowser.rb', line 57

def load_index
  p "creating index"
  txt="[h1]Index[h1]\n\n"
  @items.each_key{|key|
    txt="#{txt}#{key}\n"
  }
  empty
  add_text(txt)
  apply_links
end

#load_item(item) ⇒ Object 



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# File 'lib/ManqodHelp/HelpBrowser.rb', line 43

def load_item(item)
#   p "loading item:#{item}"
  @item=nil
  if @items.has_key?(item)
    empty
    add_text(@items[item])
    apply_links
    @item=item
    true
    else
    p "item not found:#{item}"
    false
  end
end

#remove_current_item ⇒ Object 



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# File 'lib/ManqodHelp/HelpBrowser.rb', line 95

def remove_current_item
  if @item
    @items.delete(@item)
    ManqodDB.instance.manqod_db.remove_help_item(@item)
    empty
    if tag=buffer.tag_table.lookup(@item)
      buffer.tag_table.remove(tag)
    end
    @item=nil
    @help.index.populate
  end
end

#save_current_item ⇒ Object 



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# File 'lib/ManqodHelp/HelpBrowser.rb', line 107

def save_current_item
  ManqodDB.instance.manqod_db.save_help_item(@item,@items[@item])
end

#update_current_item(descr) ⇒ Object 



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# File 'lib/ManqodHelp/HelpBrowser.rb', line 110

def update_current_item(descr)
  if @item
    @items[@item]=descr
    empty
    add_text(@items[@item])
    apply_links
  end
end