From 32643aba1797aca10570eee84b9336bf003053f3 Mon Sep 17 00:00:00 2001
From: Braiden Vasco <braiden-vasco@users.noreply.github.com>
Date: Fri, 21 Jul 2017 17:36:20 +0000
Subject: [PATCH] Implement focus for messenger

---
 .rubocop.yml             |  3 +++
 lib/main.rb              |  2 ++
 lib/widgets/chat.rb      |  5 +++++
 lib/widgets/list.rb      |  5 ++++-
 lib/widgets/messenger.rb | 32 +++++++++++++++++++++++++++++++-
 lib/widgets/peers.rb     | 10 ++++++++++
 lib/widgets/search.rb    |  4 +++-
 7 files changed, 58 insertions(+), 3 deletions(-)

diff --git a/.rubocop.yml b/.rubocop.yml
index 5a31f0b..69c2fb9 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -11,6 +11,9 @@ Metrics/LineLength:
 Style/Documentation:
   Enabled: false
 
+Style/DoubleNegation:
+  Enabled: false
+
 Style/TrailingCommaInArguments:
   EnforcedStyleForMultiline: comma
 
diff --git a/lib/main.rb b/lib/main.rb
index 6412889..2d39e9f 100644
--- a/lib/main.rb
+++ b/lib/main.rb
@@ -88,6 +88,8 @@ private
 
     @menu      = Widgets::Menu.new      menu_left,      0, menu_width,      Curses.stdscr.maxy
     @messenger = Widgets::Messenger.new messenger_left, 0, messenger_width, Curses.stdscr.maxy
+
+    @messenger.focused = true
   end
 
   def render
diff --git a/lib/widgets/chat.rb b/lib/widgets/chat.rb
index 36fcfce..e0177f9 100644
--- a/lib/widgets/chat.rb
+++ b/lib/widgets/chat.rb
@@ -3,6 +3,7 @@
 module Widgets
   class Chat
     attr_reader :x, :y, :width, :height
+    attr_accessor :focused
     attr_reader :messages
 
     def initialize(x, y, width, height)
@@ -12,6 +13,8 @@ module Widgets
       @width  = width
       @height = height
 
+      @focused = false
+
       @messages = 1.upto(100).map do
         {
           time: Faker::Time.forward,
@@ -64,5 +67,7 @@ module Widgets
 
       offset + 1 + lines
     end
+
+    def trigger(event); end
   end
 end
diff --git a/lib/widgets/list.rb b/lib/widgets/list.rb
index 590e45b..6e4f287 100644
--- a/lib/widgets/list.rb
+++ b/lib/widgets/list.rb
@@ -3,6 +3,7 @@
 module Widgets
   class List
     attr_reader :x, :y, :width, :height, :active, :top, :items
+    attr_accessor :focused
 
     def initialize(x, y, width, height)
       @x = x
@@ -14,6 +15,8 @@ module Widgets
       @active = 0
       @top    = 0
 
+      @focused = false
+
       @items = 1.upto(height - 1 + 10).map do
         Faker::Name.name
       end
@@ -23,7 +26,7 @@ module Widgets
       items[top...(top + height)].each_with_index.each do |item, offset|
         index = top + offset
 
-        if index == active
+        if index == active && focused
           Curses.attron Curses.color_pair 2
         else
           Curses.attron Curses.color_pair 1
diff --git a/lib/widgets/messenger.rb b/lib/widgets/messenger.rb
index 01ba795..3cf4a4a 100644
--- a/lib/widgets/messenger.rb
+++ b/lib/widgets/messenger.rb
@@ -3,6 +3,7 @@
 module Widgets
   class Messenger
     attr_reader :x, :y, :width, :height
+    attr_reader :focused, :focus
 
     def initialize(x, y, width, height)
       @x = x
@@ -19,6 +20,9 @@ module Widgets
 
       @peers = Widgets::Peers.new x + peers_left, y, peers_width, height
       @chat  = Widgets::Chat.new  x + chat_left,  y, chat_width,  height
+
+      @focused = false
+      @focus = @peers
     end
 
     def render
@@ -27,7 +31,33 @@ module Widgets
     end
 
     def trigger(event)
-      @peers.trigger event
+      case event
+      when Events::Window::Left
+        left
+      when Events::Window::Right
+        right
+      else
+        @focus.trigger event
+      end
+    end
+
+    def left
+      self.focus = @peers
+    end
+
+    def right
+      self.focus = @chat
+    end
+
+    def focused=(value)
+      @focused = !!value
+      focus.focused = focused
+    end
+
+    def focus=(child)
+      focus.focused = false
+      @focus = child
+      focus.focused = true if focused
     end
   end
 end
diff --git a/lib/widgets/peers.rb b/lib/widgets/peers.rb
index 83bcc9e..e53965a 100644
--- a/lib/widgets/peers.rb
+++ b/lib/widgets/peers.rb
@@ -2,7 +2,11 @@
 
 module Widgets
   class Peers
+    attr_reader :focused
+
     def initialize(x, y, width, height)
+      @focused = false
+
       @search = Widgets::Search.new x, y,     width, 1
       @list   = Widgets::List.new   x, y + 1, width, height - 1
     end
@@ -20,5 +24,11 @@ module Widgets
         @search.trigger event
       end
     end
+
+    def focused=(value)
+      @focused = !!value
+      @list.focused = focused
+      @search.focused = focused
+    end
   end
 end
diff --git a/lib/widgets/search.rb b/lib/widgets/search.rb
index b7be603..0510488 100644
--- a/lib/widgets/search.rb
+++ b/lib/widgets/search.rb
@@ -3,6 +3,7 @@
 module Widgets
   class Search
     attr_reader :x, :y, :width, :height, :text, :cursor_pos
+    attr_accessor :focused
 
     def initialize(x, y, width, height)
       @x = x
@@ -11,6 +12,7 @@ module Widgets
       @height = height
       @text = ''
       @cursor_pos = 0
+      @focused = false
     end
 
     def render
@@ -28,7 +30,7 @@ module Widgets
       Curses.attron Curses.color_pair 3
       Curses.addstr before_cursor
 
-      Curses.attron Curses.color_pair 4
+      Curses.attron Curses.color_pair 4 if focused
       Curses.addstr under_cursor
 
       Curses.attron Curses.color_pair 3