1 files changed, 76 insertions, 0 deletions
diff --git a/trunk/ext/tk/sample/demos-en/textpeer.rb b/trunk/ext/tk/sample/demos-en/textpeer.rb
new file mode 100644
index 0000000000..c25ce15e5c
--- /dev/null
+++ b/trunk/ext/tk/sample/demos-en/textpeer.rb
@@ -0,0 +1,76 @@
+#
+# text widget peering demo (called by 'widget')
+#
+# based on Tcl/Tk8.5.0 widget demos
+
+if defined?($textpeer_demo) && $textpeer_demo
+  $textpeer_demo.destroy 
+  $textpeer_demo = nil
+end
+
+# demo toplevel widget
+$textpeer_demo = TkToplevel.new {|w|
+  title("Text Wdget Peering Demonstration")
+  iconname("textpeer")
+  positionWindow(w)
+}
+
+base_frame = TkFrame.new($textpeer_demo).pack(:fill=>:both, :expand=>true)
+
+count = [0]
+
+## Define a widget that we peer from; it won't ever actually be shown though
+first = TkText.new(base_frame, :widgetname=>"text#{count[0] += 1}")
+first.insert :end,"This is a coupled pair of text widgets; they are peers to "
+first.insert :end,"each other. They have the same underlying data model, but "
+first.insert :end,"can show different locations, have different current edit "
+first.insert :end,"locations, and have different selections. You can also "
+first.insert :end,"create additional peers of any of these text widgets using "
+first.insert :end,"the Make Peer button beside the text widget to clone, and "
+first.insert :end,"delete a particular peer widget using the Delete Peer "
+first.insert :end,"button."
+
+Tk.update_idletasks  ## for 'first' widget
+
+## Procedures to make and kill clones; most of this is just so that the demo
+## looks nice...
+def makeClone(count, win, txt)
+  cnt = (count[0] += 1)
+  peer = TkText::Peer.new(txt, win, :widgetname=>"text#{cnt}")
+  sbar = TkScrollbar.new(win, :widgetname=>"sb#{cnt}")
+  peer.yscrollbar sbar
+  b1 = TkButton.new(win, :widgetname=>"clone#{cnt}", :text=>'Make Peer', 
+                    :command=>proc{makeClone(count, win, peer)})
+  b2 = TkButton.new(win, :widgetname=>"kill#{cnt}", :text=>'Delete Peer', 
+                    :command=>proc{killClone(win, cnt)})
+  row = cnt * 2
+  TkGrid.configure(peer, sbar, b1, :sticky=>'nsew', :row=>row)
+  TkGrid.configure('^',  '^',  b2, :sticky=>'nsew', :row=>(row+=1))
+  TkGrid.configure(b1,  b2, :sticky=>'new')
+  TkGrid.rowconfigure(win,  b2, :weight=>1)
+end
+
+def killClone(win, cnt)
+  Tk.destroy("#{win.path}.text#{cnt}",  "#{win.path}.sb#{cnt}", 
+             "#{win.path}.clone#{cnt}", "#{win.path}.kill#{cnt}")
+end
+
+## Now set up the GUI
+makeClone(count, base_frame, first)
+makeClone(count, base_frame, first)
+first.destroy
+
+## See Code / Dismiss buttons
+TkFrame.new(base_frame){|f|
+  TkButton.new(f, :text=>'Dismiss', :width=>15, :command=>proc{
+                 $textpeer_demo.destroy
+                 $textpeer_demo = nil
+               }).pack(:side=>:left, :expand=>true)
+
+  TkButton.new(f, :text=>'See Code', :width=>15, :command=>proc{
+                 showCode 'textpeer'
+               }).pack(:side=>:left, :expand=>true)
+
+  TkGrid.configure(f, '-', '-', :sticky=>'ew', :row=>5000)
+}
+TkGrid.columnconfigure(base_frame, 0, :weight=>1)