move to Plugin namespace

QuickLook.Common/Plugin/IViewer.cs

@@ -0,0 +1,62 @@
+// Copyright © 2017 Paddy Xu
+// 
+// This file is part of QuickLook program.
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+namespace QuickLook.Common.Plugin
+{
+    /// <summary>
+    ///     Interface implemented by every QuickLook.Plugin
+    /// </summary>
+    public interface IViewer
+    {
+        /// <summary>
+        ///     Set the priority of this plugin. A plugin with a higher priority may override one with lower priority.
+        ///     Set this to int.MaxValue for a maximum priority, int.MinValue for minimum.
+        /// </summary>
+        int Priority { get; }
+
+        /// <summary>
+        ///     Do ont-time job when application starts. You may extract nessessary resource here.
+        /// </summary>
+        void Init();
+
+        /// <summary>
+        ///     Determine whether this plugin can open this file. Please also check the file header, if applicable.
+        /// </summary>
+        /// <param name="path">The full path of the target file.</param>
+        bool CanHandle(string path);
+
+        /// <summary>
+        ///     Do some preparation stuff before the window is showing. Please not do any work that costs a lot of time.
+        /// </summary>
+        /// <param name="path">The full path of the target file.</param>
+        /// <param name="context">A runtime object which allows interaction between this plugin and QuickLook.</param>
+        void Prepare(string path, ContextObject context);
+
+        /// <summary>
+        ///     Start the loading process. During the process a busy indicator will be shown. Finish by setting context.IsBusy to
+        ///     false.
+        /// </summary>
+        /// <param name="path">The full path of the target file.</param>
+        /// <param name="context">A runtime object which allows interaction between this plugin and QuickLook.</param>
+        void View(string path, ContextObject context);
+
+        /// <summary>
+        ///     Release any unmanaged resource here.
+        /// </summary>
+        void Cleanup();
+    }
+}