Module: DemoTree

Defined in:
sample/tkextlib/bwidget/tree.rb

Constant Summary collapse

@@count =
0
@@dblclick =
false
@@top =
nil

Class Method Summary collapse

Class Method Details

.create(nb) ⇒ Object


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# File 'sample/tkextlib/bwidget/tree.rb', line 14

def self.create(nb)
  frame = nb.insert('end', 'demoTree', :text=>'Tree')
  pw = Tk::BWidget::PanedWindow.new(frame, :side=>:top)

  pane = pw.add(:weight=>1)
  title = Tk::BWidget::TitleFrame.new(pane, :text=>'Directory tree')
  sw = Tk::BWidget::ScrolledWindow.new(title.get_frame,
                                       :relief=>:sunken, :borderwidth=>2)
  tree = Tk::BWidget::Tree.new(sw, :relief=>:flat, :borderwidth=>0,
                               :width=>15, :highlightthickness=>0,
                               :redraw=>false, :dropenabled=>true,
                               :dragenabled=>true, :dragevent=>3,
                               :droptypes=>[
                                 'TREE_NODE', [
                                   :copy, [],
                                   :move, [],
                                   :link, []
                                 ],
                                 'LISTBOX_ITEM', [
                                   :copy, [],
                                   :move, [],
                                   :link, []
                                 ]
                               ],
                               :opencmd=>proc{|node|
                                 moddir(1, tree, node)
                               },
                               :closecmd=>proc{|node|
                                 moddir(0, tree, node)
                               })
  sw.set_widget(tree)

  sw.pack(:side=>:top, :expand=>true, :fill=>:both)
  title.pack(:fill=>:both, :expand=>true)

  pane = pw.add(:weight=>2)
  lf = Tk::BWidget::TitleFrame.new(pane, :text=>'Content')
  sw = Tk::BWidget::ScrolledWindow.new(lf.get_frame,
                                       :scrollbar=>:horizontal,
                                       :auto=>:none, :relief=>:sunken,
                                       :borderwidth=>2)

  list = Tk::BWidget::ListBox.new(sw, :relief=>:flat, :borderwidth=>0,
                                  :highlightthickness=>0, :width=>20,
                                  :multicolumn=>true, :redraw=>false,
                                  :dragevent=>3, :dropenabled=>true,
                                  :dragenabled=>true,
                               :droptypes=>[
                                    'TREE_NODE', [
                                      :copy, [],
                                      :move, [],
                                      :link, []
                                    ],
                                    'LISTBOX_ITEM', [
                                      :copy, [],
                                      :move, [],
                                      :link, []
                                    ]
                                  ])
  sw.set_widget(list)

  Tk.pack(sw, lf, :fill=>:both, :expand=>true)

  pw.pack(:fill=>:both, :expand=>true)

  tree.textbind('ButtonPress-1',
                proc{|node, ev| select('tree', 1, tree, list, node)})
  tree.textbind('Double-ButtonPress-1',
                proc{|node, ev| select('tree', 2, tree, list, node)})

  list.textbind('ButtonPress-1',
                proc{|node, ev| select('list', 1, tree, list, node)})
  list.textbind('Double-ButtonPress-1',
                proc{|node, ev| select('list', 2, tree, list, node)})

  list.imagebind('Double-ButtonPress-1',
                 proc{|node, ev| select('list', 2, tree, list, node)})

  nb.itemconfigure('demoTree',
                   :createcmd=>proc{|*args| init(tree, list, *args)},
                   :raisecmd=>proc{
                     Tk.root.geometry =~
                       /\d+x\d+([+-]{1,2}\d+)([+-]{1,2}\d+)/
                     global_w = ($1 || 0).to_i
                     global_h = ($2 || 0).to_i
                     if @@top
                       Tk::BWidget.place(@@top, 0, 0, :at,
                          global_w - Tk.root.winfo_screenwidth, global_h)
                       @@top.deiconify
                       Tk.root.bind('Unmap', proc{@@top.withdraw})
                       Tk.root.bind('Map',   proc{@@top.deiconify})
                       Tk.root.bind('Configure', proc{|w|
                              if w == Tk.root
                                Tk.root.geometry =~
                                  /\d+x\d+([+-]{1,2}\d+)([+-]{1,2}\d+)/
                                global_w = ($1 || 0).to_i
                                global_h = ($2 || 0).to_i
                                Tk::BWidget.place(@@top, 0, 0, :at,
                                     global_w - Tk.root.winfo_screenwidth,
                                     global_h)
                              end
                       }, '%W')
                     end
                   },
                   :leavecmd=>proc{
                     @@top.withdraw if @@top
                     Tk.root.bind_remove('Unmap')
                     Tk.root.bind_remove('Map')
                     Tk.root.bind_remove('Configure')
                     true
                   })
end

.edit(where, tree, list, node) ⇒ Object


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# File 'sample/tkextlib/bwidget/tree.rb', line 245

def self.edit(where, tree, list, node)
  return if @@dblclick

  if (where == 'tree' &&
      tree.selection_get.find{|x|
        TkUtil._get_eval_string(x) == TkUtil._get_eval_string(node)
      })
    res = tree.edit(node, tree.itemcget(node, :text))
    if res != ''
      tree.itemconfigure(node, :text=>res)
      if list.exist?(node)
        list.itemconfigure(node, :text=>res)
      end
      tree.selection_set(node)
    end
    return
  end

  if (where == 'list')
    res = list.edit(node, list.igemcget(node, :text))
    if res != ''
      list.itemconfigure(node, :text=>res)
      if tree.exist?(node)
        tree.itemconfigure(node, :text=>res)
      else
        cursel = tree.selection_get[0]
        index  = list.index(node) - tree.nodes(cursel).size
        data   = TkComm.simplelist(tree.itemcget(cursel, :data))
        data[index] = res
        tree.itemconfigure(cursel, :date=>data)
      end
      list.selection_set(node)
    end
  end
end

.expand(tree, but) ⇒ Object


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# File 'sample/tkextlib/bwidget/tree.rb', line 281

def self.expand(tree, but)
  unless (cur = tree.selection_get).empty?
    if TkComm.bool(but)
      tree.opentree(cur)
    else
      tree.closetree(cur)
    end
  end
end

.getdir(tree, node, path) ⇒ Object


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# File 'sample/tkextlib/bwidget/tree.rb', line 156

def self.getdir(tree, node, path)
  lentries = Dir.glob(File.join(path, '*')).sort
  lfiles = []
  lentries.each{|f|
    basename = File.basename(f)
    if File.directory?(f)
      Tk::BWidget::Tree::Node.new(tree, node,
                                  :index=>'end', :text=>basename,
                                  :image=>Tk::BWidget::Bitmap.new('folder'),
                                  :drawcross=>:allways, :data=>f)
      @@count += 1
    else
      lfiles << basename
    end
  }
  tree.itemconfigure(node, :drawcross=>:auto, :data=>lfiles)
end

.init(tree, list, *args) ⇒ Object


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# File 'sample/tkextlib/bwidget/tree.rb', line 127

def self.init(tree, list, *args)
  @@count = 0
  if Tk::PLATFORM['platform'] == 'unix'
    rootdir = File.expand_path('~')
  else
    rootdir = 'c:'
  end

  tree.insert('end', 'root', 'home',
              :text=>rootdir, :data=>rootdir, :open=>true,
              :image=>Tk::BWidget::Bitmap.new('openfold'))
  getdir(tree, 'home', rootdir)
  select('tree', 1, tree, list, 'home')
  tree.redraw(true)
  list.redraw(true)

  @@top = TkToplevel.new
  @@top.withdraw
  @@top.protocol('WM_DELETE_WINDOW'){
    # don't kill me
  }
  @@top.resizable(false, false)
  @@top.title('Drag rectangle to scroll directory tree')
  @@top.transient(Tk.root)
  Tk::BWidget::ScrollView.new(@@top, :window=>tree, :fill=>'white',
                              :width=>300, :height=>300, :relief=>:sunken,
                              :bd=>1).pack(:fill=>:both, :expand=>true)
end

.moddir(idx, tree, node) ⇒ Object


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# File 'sample/tkextlib/bwidget/tree.rb', line 174

def self.moddir(idx, tree, node)
  if (idx != 0 && tree.itemcget(node, :drawcross).to_s == 'allways')
    getdir(tree, node, tree.itemcget(node, :data))
    if tree.nodes(node).empty?
      tree.itemconfigure(node, :image=>Tk::BWidget::Bitmap.new('folder'))
    else
      tree.itemconfigure(node, :image=>Tk::BWidget::Bitmap.new('openfold'))
    end
  else
    img = %w(folder openfold)[idx] || 'openfold'
    tree.itemconfigure(node, :image=>Tk::BWidget::Bitmap.new(img))
  end
end

.select(where, num, tree, list, node) ⇒ Object


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# File 'sample/tkextlib/bwidget/tree.rb', line 188

def self.select(where, num, tree, list, node)
  @@dblclick = true
  if num == 1
    if (where == 'tree' &&
        tree.selection_get.find{|x|
          TkUtil._get_eval_string(x) == TkUtil._get_eval_string(node)
        })
      @@dblclick = false
      Tk.after(500, proc{edit('tree', tree, list, node)})
      return
    end
    if (where == 'list' &&
        list.selection_get.find{|x|
          TkUtil._get_eval_string(x) == TkUtil._get_eval_string(node)
        })
      @@dblclick = false
      Tk.after(500, proc{edit('list', tree, list, node)})
      return
    end
    if where == 'tree'
      select_node(tree, list, node)
    else
      list.selection_set(node)
    end
  elsif (where == 'list' && tree.exist?(node))
    parent = tree.parent(node)
    while TkUtil._get_eval_string(parent) != 'root'
      tree.itemconfigure(parent, :open=>true)
      parent = tree.parent(parent)
    end
    select_node(tree, list, node)
  end
end

.select_node(tree, list, node) ⇒ Object


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# File 'sample/tkextlib/bwidget/tree.rb', line 222

def self.select_node(tree, list, node)
  tree.selection_set(node)
  Tk.update
  list.delete(*(list.items(0, 'end')))

  dir = tree.itemcget(node, :data)
  if tree.itemcget(node, :drawcross).to_s == 'allways'
    getdir(tree, node, dir)
    dir = tree.itemcget(node, :data)
  end

  tree.nodes(node).each{|subnode|
    list.insert('end', subnode,
                :text=>tree.itemcget(subnode, :text),
                :image=>Tk::BWidget::Bitmap.new('folder'))
  }

  TkComm.simplelist(dir).each{|f|
    Tk::BWidget::ListBox::Item.new(list, 'end', :text=>f,
                                   :image=>Tk::BWidget::Bitmap.new('file'))
  }
end