From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001
From: Jari Vetoniemi <jari.vetoniemi@indooratlas.com>
Date: Mon, 16 Mar 2020 18:49:26 +0900
Subject: Fresh start

---
 jni/ruby/ext/tk/lib/tkextlib/tcllib/autoscroll.rb | 158 ++++++++++++++++++++++
 1 file changed, 158 insertions(+)
 create mode 100644 jni/ruby/ext/tk/lib/tkextlib/tcllib/autoscroll.rb

(limited to 'jni/ruby/ext/tk/lib/tkextlib/tcllib/autoscroll.rb')

diff --git a/jni/ruby/ext/tk/lib/tkextlib/tcllib/autoscroll.rb b/jni/ruby/ext/tk/lib/tkextlib/tcllib/autoscroll.rb
new file mode 100644
index 0000000..2def59b
--- /dev/null
+++ b/jni/ruby/ext/tk/lib/tkextlib/tcllib/autoscroll.rb
@@ -0,0 +1,158 @@
+#
+#  tkextlib/tcllib/autoscroll.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+#   * Part of tcllib extension
+#   * Provides for a scrollbar to automatically mapped and unmapped as needed
+#
+# (The following is the original description of the library.)
+#
+# This package allows scrollbars to be mapped and unmapped as needed
+# depending on the size and content of the scrollbars scrolled widget.
+# The scrollbar must be managed by either pack or grid, other geometry
+# managers are not supported.
+#
+# When managed by pack, any geometry changes made in the scrollbars parent
+# between the time a scrollbar is unmapped, and when it is mapped will be
+# lost. It is an error to destroy any of the scrollbars siblings while the
+# scrollbar is unmapped. When managed by grid, if anything becomes gridded
+# in the same row and column the scrollbar occupied it will be replaced by
+# the scrollbar when remapped.
+#
+# This package may be used on any scrollbar-like widget as long as it
+# supports the set subcommand in the same style as scrollbar. If the set
+# subcommand is not used then this package will have no effect.
+#
+
+require 'tk'
+require 'tk/scrollbar'
+require 'tkextlib/tcllib.rb'
+
+module Tk
+  module Tcllib
+    module Autoscroll
+      PACKAGE_NAME = 'autoscroll'.freeze
+      def self.package_name
+        PACKAGE_NAME
+      end
+
+      def self.package_version
+        begin
+          TkPackage.require('autoscroll')
+        rescue
+          ''
+        end
+      end
+
+      def self.not_available
+        fail RuntimeError, "'tkextlib/tcllib/autoscroll' extension is not available on your current environment."
+      end
+
+      def self.autoscroll(win)
+        Tk::Tcllib::Autoscroll.not_available
+      end
+
+      def self.unautoscroll(win)
+        Tk::Tcllib::Autoscroll.not_available
+      end
+    end
+  end
+end
+
+module Tk
+  module Scrollable
+    def autoscroll(mode = nil)
+      case mode
+      when :x, 'x'
+        if @xscrollbar
+          Tk::Tcllib::Autoscroll.autoscroll(@xscrollbar)
+        end
+      when :y, 'y'
+        if @yscrollbar
+          Tk::Tcllib::Autoscroll.autoscroll(@yscrollbar)
+        end
+      when nil, :both, 'both'
+        if @xscrollbar
+          Tk::Tcllib::Autoscroll.autoscroll(@xscrollbar)
+        end
+        if @yscrollbar
+          Tk::Tcllib::Autoscroll.autoscroll(@yscrollbar)
+        end
+      else
+        fail ArgumentError, "'x', 'y' or 'both' (String or Symbol) is expected"
+      end
+      self
+    end
+    def unautoscroll(mode = nil)
+      case mode
+      when :x, 'x'
+        if @xscrollbar
+          Tk::Tcllib::Autoscroll.unautoscroll(@xscrollbar)
+        end
+      when :y, 'y'
+        if @yscrollbar
+          Tk::Tcllib::Autoscroll.unautoscroll(@yscrollbar)
+        end
+      when nil, :both, 'both'
+        if @xscrollbar
+          Tk::Tcllib::Autoscroll.unautoscroll(@xscrollbar)
+        end
+        if @yscrollbar
+          Tk::Tcllib::Autoscroll.unautoscroll(@yscrollbar)
+        end
+      else
+        fail ArgumentError, "'x', 'y' or 'both' (String or Symbol) is expected"
+      end
+      self
+    end
+  end
+end
+
+class Tk::Scrollbar
+  def autoscroll
+    # Arranges for the already existing scrollbar to be mapped
+    # and unmapped as needed.
+    #tk_call_without_enc('::autoscroll::autoscroll', @path)
+    Tk::Tcllib::Autoscroll.autoscroll(self)
+    self
+  end
+  def unautoscroll
+    #     Returns the scrollbar to its original static state.
+    #tk_call_without_enc('::autoscroll::unautoscroll', @path)
+    Tk::Tcllib::Autoscroll.unautoscroll(self)
+    self
+  end
+end
+
+# TkPackage.require('autoscroll', '1.0')
+# TkPackage.require('autoscroll', '1.1')
+TkPackage.require('autoscroll')
+
+module Tk
+  module Tcllib
+    class << Autoscroll
+      undef not_available
+    end
+
+    module Autoscroll
+      extend TkCore
+      def self.autoscroll(win)
+        tk_call_without_enc('::autoscroll::autoscroll', win.path)
+      end
+
+      def self.unautoscroll(win)
+        tk_call_without_enc('::autoscroll::unautoscroll', win.path)
+      end
+
+      def self.wrap
+        # v1.1
+        tk_call_without_enc('::autoscroll::wrap')
+      end
+
+      def self.unwrap
+        # v1.1
+        tk_call_without_enc('::autoscroll::unwrap')
+      end
+    end
+  end
+end
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