Close #25 and Close #10

Fixed scroll bars not appearing. Also implemented load/save of
Collections; tied the Library to a collection (libraries are per-project);
Most of the File menu works now. Library manager works. Ready to start
working on the drag and drop library pallette and tabbed page display at
this point.

lib/tailor/Collection.rb

@@ -0,0 +1,63 @@
+require 'singleton'
+
+module Tailor
+  module Collection
+    include Singleton
+
+    attr_accessor :library
+
+    def initialize
+      @metadata = {
+        "author": "",
+        "name": "",
+        "license": ""
+        }
+      self.library = Tailor::Library.new
+      @pages = {}
+    end
+
+    def to_json
+      js = { 
+        "metadata" => metadata,
+        "library" => {},
+        "pages" => {}
+      }
+
+      @library.each do |tileset|
+        js['library'][tileset['name']] = tileset.get_filename
+      end
+      @pages.each do |page|
+        js['pages'][page.page_name] = page.to_json
+      end
+    end
+    
+    def save_json(filename)
+      dname = File.dirname(filename)
+      Dir.mkdir(dname) unless Dir.exist?(dname)
+
+      File.open(filename, "w") do |file|
+        file.write(JSON.pretty_generate(to_json))
+      end
+    end
+
+    def from_json(js)
+      js['library'].each_pair do |name, filename|
+        @library.load_tileset(filename)
+      end
+      js['pages'].each_pair do |name, data|
+        @pages[name] = Tailor::Page.new
+        @pages[name].from_json(data)
+      end
+    end
+
+    def load_json(filename)
+      dname = File.dirname(filename)
+      Dir.mkdir(dname) unless Dir.exist?(dname)
+      File.open(filename, "r") do |file|
+        js = JSON.parse(file.read)
+      end
+      from_json(js)
+    end
+
+  end
+end

lib/tailor/GUI/LibraryManager.rb

@@ -0,0 +1,30 @@
+require 'wx'
+require 'Tailor/Library'
+
+module Tailor
+  module GUI
+    class LibraryManager
+      def initialize(*args)
+        super(*args)
+        @library = Tailor::Library.instance
+        @panel = Wx::Panel.new(self)
+        @sizer = Wx::BoxSizer.new(Wx::VERTICAL)
+        
+        horizSizer = Wx::BoxSizer.new(Wx::HORIZONTAL)
+        vertSizer = Wx::BoxSizer.new(Wx::VERTICAL)
+        @tilesetList = Wx::ListBox.new(@panel,
+                                       Wx::ID_ANY,
+                                       Wx::DEFAULT_POSITION,
+                                       Wx::DEFAULT_SIZE,
+                                       @library.tileset_names,
+                                       Wx::LB_SORT | Wx::LB_SINGLE)
+        vertSizer.add(@tilesetList, 0, flags = Wx::EXPAND|Wx::ALL)
+        horizSizer.add(vertSizer, 0, flags = Wx::EXPAND|Wx::ALL)
+        @sizer.add(horizSizer, 1, flag=Wx::EXPAND|Wx::ALL)
+        @panel.set_sizer(@sizer)
+        @sizer.set_size_hints(self)
+        show()
+      end
+    end
+  end
+end

lib/tailor/Library.rb

@@ -0,0 +1,34 @@
+require 'Tailor/Tileset'
+require 'singleton'
+
+module Tailor
+  class Library
+    include Singleton
+    
+    attr_accessor :tilesets
+
+    def initialize
+      self.tilesets = []
+    end
+
+    def tileset_names
+      x = []
+      idx = 0
+      self.tilesets.each do |tileset|
+        x << [idx, tileset.tileset_name]
+        idx += 1
+      end
+    end
+
+    def unload_tileset(tileset)
+      self.tilesets.delete(tileset)
+    end
+
+    def add_tileset(path)
+      ts = Tailor::Tileset.new
+      ts.from_json(JSON.parse(File.read(path)))
+      self.tilesets << ts
+    end
+
+  end
+end