Added support for image icon for ToggleButton, added initial implementation of EditBox, fixed a few ruby -w warnings by initializing select instance nilable variables, added clipboard support to EditLine, added drag selection to EditLine, added keyboard shortcuts to EditLine, GuiState now passes button_down/button_up callbacks to @focus

lib/cyberarm_engine/ui/elements/edit_box.rb

@@ -1,6 +1,60 @@
 module CyberarmEngine
   class Element
-    class EditBox < Element
+    class EditBox < EditLine
+      def initialize(*args)
+        super(*args)
+
+        @active_line = 0
+      end
+
+      def draw_caret
+        Gosu.draw_rect(caret_position, @text.y + @active_line * @text.textobject.height, @caret_width, @caret_height, @caret_color, @z)
+      end
+
+      def draw_selection
+        selection_width = caret_position - selection_start_position
+
+        Gosu.draw_rect(selection_start_position, @text.y, selection_width, @text.textobject.height, default(:selection_color), @z)
+      end
+
+      def text_input_position_for(method)
+        if @type == :password
+          @text.x + @text.width(default(:password_character) * @text_input.text[0...@text_input.send(method)].length)
+        else
+          @text.x + @text.width(@text_input.text[0...@text_input.send(method)])
+        end
+      end
+
+      def caret_position_under_mouse(mouse_x, mouse_y)
+        1.upto(@text.text.length) do |i|
+          if mouse_x < @text.x - @offset_x + @text.textobject.text_width(@text.text[0...i])
+            return i - 1;
+          end
+        end
+
+        @text_input.text.length
+      end
+
+      def move_caret_to_mouse(mouse_x, mouse_y)
+        @text_input.caret_pos = @text_input.selection_start = caret_position_under_mouse(mouse_x, mouse_y)
+      end
+
+      def button_down(id)
+        super
+
+        case id
+        when Gosu::KB_ENTER, Gosu::KB_RETURN
+          caret_pos = @text_input.caret_pos
+          @text_input.text = @text_input.text.insert(@text_input.caret_pos, "\n")
+          @text_input.caret_pos = @text_input.selection_start = caret_pos + 1
+        end
+      end
+
+      def drag_update(sender, x, y, button)
+        @text_input.caret_pos = caret_position_under_mouse(x, y)
+
+        :handled
+      end
     end
   end
 end