Refactoring. Move system plugins to seperate DLLs.

Plugins/Wox.Plugin.Color/Color.cs

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+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Drawing.Imaging;
+using System.IO;
+using System.Linq;
+using System.Windows;
+
+namespace Wox.Plugin.Color
+{
+    public sealed class ColorsPlugin : IPlugin
+    {
+        private string DIR_PATH = Path.Combine(Path.GetTempPath(), @"Plugins\Colors\");
+        private const int IMG_SIZE = 32;
+
+        private DirectoryInfo ColorsDirectory { get; set; }
+
+        public ColorsPlugin()
+        {
+            if (!Directory.Exists(DIR_PATH))
+            {
+                ColorsDirectory = Directory.CreateDirectory(DIR_PATH);
+            }
+            else
+            {
+                ColorsDirectory = new DirectoryInfo(DIR_PATH);
+            }
+        }
+
+        public List<Result> Query(Query query)
+        {
+            var raw = query.RawQuery;
+            if (!IsAvailable(raw)) return new List<Result>(0);
+            try
+            {
+                var cached = Find(raw);
+                if (cached.Length == 0)
+                {
+                    var path = CreateImage(raw);
+                    return new List<Result>
+                    {
+                        new Result
+                        {
+                            Title = raw,
+                            IcoPath = path,
+                            Action = _ =>
+                            {
+                                Clipboard.SetText(raw);
+                                return true;
+                            }
+                        }
+                    };
+                }
+                return cached.Select(x => new Result
+                {
+                    Title = raw,
+                    IcoPath = x.FullName,
+                    Action = _ =>
+                    {
+                        Clipboard.SetText(raw);
+                        return true;
+                    }
+                }).ToList();
+            }
+            catch (Exception exception)
+            {
+                // todo: log
+                return new List<Result>(0);
+            }
+        }
+
+        private bool IsAvailable(string query)
+        {
+            // todo: rgb, names
+            var length = query.Length - 1; // minus `#` sign
+            return query.StartsWith("#") && (length == 3 || length == 6);
+        }
+
+        public FileInfo[] Find(string name)
+        {
+            var file = string.Format("{0}.png", name.Substring(1));
+            return ColorsDirectory.GetFiles(file, SearchOption.TopDirectoryOnly);
+        }
+
+        private string CreateImage(string name)
+        {
+            using (var bitmap = new Bitmap(IMG_SIZE, IMG_SIZE))
+            using (var graphics = Graphics.FromImage(bitmap))
+            {
+                var color = ColorTranslator.FromHtml(name);
+                graphics.Clear(color);
+
+                var path = CreateFileName(name);
+                bitmap.Save(path, ImageFormat.Png);
+                return path;
+            }
+        }
+
+        private string CreateFileName(string name)
+        {
+            return string.Format("{0}{1}.png", ColorsDirectory.FullName, name.Substring(1));
+        }
+
+        public void Init(PluginInitContext context)
+        {
+        }
+    }
+}

Plugins/Wox.Plugin.Color/Properties/AssemblyInfo.cs

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+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// 有关程序集的常规信息通过以下
+// 特性集控制。更改这些特性值可修改
+// 与程序集关联的信息。
+[assembly: AssemblyTitle("Wox.Plugin.Color")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("Wox.Plugin.Color")]
+[assembly: AssemblyCopyright("Copyright ©  2015")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// 将 ComVisible 设置为 false 使此程序集中的类型
+// 对 COM 组件不可见。  如果需要从 COM 访问此程序集中的类型，
+// 则将该类型上的 ComVisible 特性设置为 true。
+[assembly: ComVisible(false)]
+
+// 如果此项目向 COM 公开，则下列 GUID 用于类型库的 ID
+[assembly: Guid("46b03f84-5bf7-4ed4-a69b-f0274c8b3776")]
+
+// 程序集的版本信息由下面四个值组成: 
+//
+//      主版本
+//      次版本 
+//      生成号
+//      修订号
+//
+// 可以指定所有这些值，也可以使用“生成号”和“修订号”的默认值，
+// 方法是按如下所示使用“*”: 
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

Plugins/Wox.Plugin.Color/Wox.Plugin.Color.csproj

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{F35190AA-4758-4D9E-A193-E3BDF6AD3567}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Wox.Plugin.Color</RootNamespace>
+    <AssemblyName>Wox.Plugin.Color</AssemblyName>
+    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>..\..\Output\Debug\Plugins\Wox.Plugin.Color\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="PresentationCore" />
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Drawing" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Color.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="Images\color.png">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="plugin.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\Wox.Plugin\Wox.Plugin.csproj">
+      <Project>{8451ecdd-2ea4-4966-bb0a-7bbc40138e80}</Project>
+      <Name>Wox.Plugin</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>

Plugins/Wox.Plugin.Color/plugin.json

@@ -0,0 +1,12 @@
+{
+    "ID":"9B36CE6181FC47FBB597AA2C29CD9B0A",
+    "ActionKeyword":"*",
+    "Name":"Colors",
+    "Description":"Provide hex color preview.(Try #000 in Wox)",
+    "Author":"qianlifeng",
+    "Version":"1.0.0",
+    "Language":"csharp",
+    "Website":"http://www.getwox.com/plugin",
+    "ExecuteFileName":"Wox.Plugin.Color.dll",
+    "IcoPath":"Images\\color.png"
+}