DevTools: Implement CSS/JS documentation context menu provider for CodeMirrorTextEditor

Source/devtools/front_end/documentation/DocumentationView.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 importScript("WikiParser.js");
 importScript("JSArticle.js");
 importScript("CSSArticle.js");
 importScript("DocumentationURLProvider.js");
+
+/**
+ * @constructor
+ * @extends {WebInspector.VBox}
+ */
+WebInspector.DocumentationView = function()
+{
+    WebInspector.VBox.call(this);
+}
+
+/**
+ * @param {string} searchTerm
+ */
+WebInspector.DocumentationView.showSearchTerm = function(searchTerm)
+{
+    if (!WebInspector.DocumentationView._view)
+        WebInspector.DocumentationView._view = new WebInspector.DocumentationView();
+    var view = WebInspector.DocumentationView._view;
+    WebInspector.inspectorView.showCloseableViewInDrawer("documentation", WebInspector.UIString("Documentation"), view);
+}
+
+WebInspector.DocumentationView.prototype = {
+    __proto__: WebInspector.VBox.prototype
+}
+
+/**
+ * @constructor
+ * @implements {WebInspector.ContextMenu.Provider}
+ */
+WebInspector.DocumentationView.ContextMenuProvider = function()
+{
+}
+
+WebInspector.DocumentationView.ContextMenuProvider.prototype = {
+    /**
+     * @param {!Event} event
+     * @param {!WebInspector.ContextMenu} contextMenu
+     * @param {!Object} target
+     */
+    appendApplicableItems: function(event, contextMenu, target)
+    {
+        if (!(target instanceof WebInspector.CodeMirrorTextEditor))
+            return;
+        var textEditor = /** @type {!WebInspector.CodeMirrorTextEditor} */ (target);
+        contextMenu.appendItem(WebInspector.UIString(WebInspector.useLowerCaseMenuTitles() ? "Show documentation" : "Show Documentation"), this._showDocumentation.bind(this, textEditor));
+    },
+
+    /**
+     * @param {!WebInspector.CodeMirrorTextEditor} textEditor
+     */
+    _showDocumentation: function(textEditor)
+    {
+        var selection = textEditor.selection();
+        if (!selection || selection.isEmpty())
+            return;
+        var selectedText = textEditor.copyRange(selection);
+        WebInspector.DocumentationView.showSearchTerm(selectedText);
+    }
+}