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

Returns a new instance of 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