Method: PDFWalker::PDFTree#initialize

Defined in:
lib/pdfwalker/treeview.rb

#initialize(parent) ⇒ PDFTree

Returns a new instance of PDFTree.



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# File 'lib/pdfwalker/treeview.rb', line 58

def initialize(parent)
    @parent = parent

    reset_appearance

    @treestore = TreeStore.new(Object::Object, String, Pango::Weight, Pango::Style, String, String, Integer)
    super(@treestore)

    signal_connect('cursor-changed') {
        iter = selection.selected
        if iter
            obj = @treestore.get_value(iter, OBJCOL)

            parent.hexview.load(obj)
            parent.objectview.load(obj)
        end
    }

    signal_connect('row-activated') { |_tree, path,_column|
        if selection.selected
            obj = @treestore.get_value(selection.selected, OBJCOL)

            if row_expanded?(path)
                collapse_row(path)
            else
                expand_row(path, false)
            end

            goto(obj) if obj.is_a?(Origami::Reference)
        end
    }

    signal_connect('row-expanded') { |_tree, iter, _path|
        obj = @treestore.get_value(iter, OBJCOL)

        if obj.is_a?(Origami::Stream) and iter.n_children == 1

            # Processing with an XRef or Object Stream
            if obj.is_a?(Origami::ObjectStream)
                obj.each { |embeddedobj|
                    load_object(iter, embeddedobj)
                }

            elsif obj.is_a?(Origami::XRefStream)
                obj.each { |xref|
                    load_xrefstm(iter, xref)
                }
            end
        end

        for i in 0...iter.n_children
            subiter = iter.nth_child(i)
            subobj = @treestore.get_value(subiter, OBJCOL)

            load_sub_objects(subiter, subobj)
        end
    }

    add_events(Gdk::Event::BUTTON_PRESS_MASK)
    signal_connect('button_press_event') { |_widget, event|
        if event.button == 3 && parent.opened
            path = get_path(event.x,event.y).first
            set_cursor(path, nil, false)

            obj = @treestore.get_value(@treestore.get_iter(path), OBJCOL)
            popup_menu(obj, event, path)
        end
    }
end