Merge pull request #5421 from WebsiteDeveloper/CodeHintManager

Fix for Issue 1617: Removed all references to CodeHintManager from Editor

Author: RaymondLim

src/editor/CodeHintManager.js

@@ -1,24 +1,24 @@
 /*
  * Copyright (c) 2012 Adobe Systems Incorporated. All rights reserved.
- *  
+ *
  * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"), 
- * to deal in the Software without restriction, including without limitation 
- * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
- * and/or sell copies of the Software, and to permit persons to whom the 
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
- *  
+ *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
- *  
+ *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  * DEALINGS IN THE SOFTWARE.
- * 
+ *
  */
 
 /*
@@ -91,36 +91,36 @@
  * to show hints. Because implicit hints can be triggered by every
  * character insertion, hasHints may be called frequently; consequently,
  * the provider should endeavor to return a value as quickly as possible.
- * 
+ *
  * Because calls to hasHints imply that a hinting session is about to
  * begin, a provider may wish to clean up cached data from previous
  * sessions in this method. Similarly, if the provider returns true, it
  * may wish to prepare to cache data suitable for the current session. In
  * particular, it should keep a reference to the editor object so that it
  * can access the editor in future calls to getHints and insertHints.
- * 
- * param {Editor} editor 
+ *
+ * param {Editor} editor
  * A non-null editor object for the active window.
  *
- * param {string} implicitChar 
+ * param {string} implicitChar
  * Either null, if the hinting request was explicit, or a single character
  * that represents the last insertion and that indicates an implicit
  * hinting request.
  *
- * return {boolean} 
+ * return {boolean}
  * Determines whether the current provider is able to provide hints for
  * the given editor context and, in case implicitChar is non- null,
  * whether it is appropriate to do so.
- * 
- * 
+ *
+ *
  * # CodeHintProvider.getHints(implicitChar)
- * 
+ *
  * The method by which a provider provides hints for the editor context
  * associated with the current session. The getHints method is called only
  * if the provider asserted its willingness to provide hints in an earlier
- * call to hasHints. The provider may return null or false, which indicates 
+ * call to hasHints. The provider may return null or false, which indicates
  * that the manager should end the current hinting session and close the hint
- * list window; or true, which indicates that the manager should end the 
+ * list window; or true, which indicates that the manager should end the
  * current hinting session but immediately attempt to begin a new hinting
  * session by querying registered providers. Otherwise, the provider should
  * return a response object that contains the following properties:
@@ -156,7 +156,7 @@
  * deferred object from the current call has resolved or been rejected. If
  * the provider rejects the deferred, the manager will end the hinting
  * session.
- * 
+ *
  * The getHints method may be called by the manager repeatedly during a
  * hinting session. Providers may wish to cache information for efficiency
  * that may be useful throughout these sessions. The same editor context
@@ -177,25 +177,25 @@
  *      match: string,
  *      selectInitial: boolean,
  *      handleWideResults: boolean}}
- * 
+ *
  * Null if the provider wishes to end the hinting session. Otherwise, a
  * response object, possibly deferred, that provides 1. a sorted array
  * hints that consists either of strings or jQuery objects; 2. a string
  * match, possibly null, that is used by the manager to emphasize
  * matching substrings when rendering the hint list; and 3. a boolean that
  * indicates whether the first result, if one exists, should be selected
  * by default in the hint list window. If match is non-null, then the
- * hints should be strings. 
- * 
- * If the match is null, the manager will not 
- * attempt to emphasize any parts of the hints when rendering the hint 
- * list; instead the provider may return strings or jQuery objects for 
+ * hints should be strings.
+ *
+ * If the match is null, the manager will not
+ * attempt to emphasize any parts of the hints when rendering the hint
+ * list; instead the provider may return strings or jQuery objects for
  * which emphasis is self-contained. For example, the strings may contain
- * substrings that wrapped in bold tags. In this way, the provider can 
+ * substrings that wrapped in bold tags. In this way, the provider can
  * choose to let the manager handle emphasis for the simple and common case
- * of prefix matching, or can provide its own emphasis if it wishes to use 
+ * of prefix matching, or can provide its own emphasis if it wishes to use
  * a more sophisticated matching algorithm.
- * 
+ *
  *
  * # CodeHintProvider.insertHint(hint)
  *
@@ -209,18 +209,18 @@
  * explicit hinting request, which may result in a new hinting session
  * being opened with some provider, but not necessarily the current one.
  *
- * param {string} hint 
+ * param {string} hint
  * The hint to be inserted into the editor context for the current session.
- * 
- * return {boolean} 
+ *
+ * return {boolean}
  * Indicates whether the manager should follow hint insertion with an
  * explicit hint request.
  *
  *
  * # CodeHintProvider.insertHintOnTab
- * 
+ *
  * type {?boolean} insertHintOnTab
- * Indicates whether the CodeHintManager should request that the provider of 
+ * Indicates whether the CodeHintManager should request that the provider of
  * the current session insert the currently selected hint on tab key events,
  * or if instead a tab character should be inserted into the editor. If omitted,
  * the fallback behavior is determined by the CodeHintManager. The default
@@ -275,12 +275,12 @@ define(function (require, exports, module) {
         return b.priority - a.priority;
     }
 
-    /**    
+    /**
      * The method by which a CodeHintProvider registers its willingness to
      * providing hints for editors in a given language.
      *
      * @param {!CodeHintProvider} provider
-     * The hint provider to be registered, described below. 
+     * The hint provider to be registered, described below.
      *
      * @param {!Array.<string>} languageIds
      * The set of language ids for which the provider is capable of
@@ -353,7 +353,7 @@ define(function (require, exports, module) {
         });
     }
 
-    /** 
+    /**
      *  Return the array of hint providers for the given language id.
      *  This gets called (potentially) on every keypress. So, it should be fast.
      *
@@ -384,14 +384,14 @@ define(function (require, exports, module) {
         }
     }
 
-    /** 
+    /**
      * Is there a hinting session active for a given editor?
-     * 
+     *
      * NOTE: the sessionEditor, sessionProvider and hintList objects are
-     * only guaranteed to be initialized during an active session. 
-     * 
+     * only guaranteed to be initialized during an active session.
+     *
      * @param {Editor} editor
-     * @return boolean 
+     * @return boolean
      */
     function _inSession(editor) {
         if (sessionEditor) {
@@ -433,7 +433,7 @@ define(function (require, exports, module) {
                 _beginSession(previousEditor);
             } else if (response.hasOwnProperty("hints")) { // a synchronous response
                 if (hintList.isOpen()) {
-                    // the session is open 
+                    // the session is open
                     hintList.update(response);
                 } else {
                     hintList.open(response);
@@ -442,7 +442,7 @@ define(function (require, exports, module) {
                 deferredHints = response;
                 response.done(function (hints) {
                     if (hintList.isOpen()) {
-                        // the session is open 
+                        // the session is open
                         hintList.update(hints);
                     } else {
                         hintList.open(hints);
@@ -453,7 +453,7 @@ define(function (require, exports, module) {
     }
 
     /**
-     * Try to begin a new hinting session. 
+     * Try to begin a new hinting session.
      * @param {Editor} editor
      */
     _beginSession = function (editor) {
@@ -497,7 +497,7 @@ define(function (require, exports, module) {
     };
 
     /**
-     * Explicitly start a new session. If we have an existing session, 
+     * Explicitly start a new session. If we have an existing session,
      * then close the current one and restart a new one.
      * @param {Editor} editor
      */
@@ -517,18 +517,19 @@ define(function (require, exports, module) {
     }
 
     /**
-     * Handles keys related to displaying, searching, and navigating the hint list. 
+     * Handles keys related to displaying, searching, and navigating the hint list.
      * This gets called before handleChange.
      *
      * TODO: Ideally, we'd get a more semantic event from the editor that told us
      * what changed so that we could do all of this logic without looking at
      * key events. Then, the purposes of handleKeyEvent and handleChange could be
      * combined. Doing this well requires changing CodeMirror.
      *
+     * @param {Event} jqEvent
      * @param {Editor} editor
      * @param {KeyboardEvent} event
      */
-    function handleKeyEvent(editor, event) {
+    function _handleKeyEvent(jqEvent, editor, event) {
         keyDownEditor = editor;
         if (event.type === "keydown") {
             if (!(event.ctrlKey || event.altKey || event.metaKey) &&
@@ -560,19 +561,23 @@ define(function (require, exports, module) {
     }
 
     /**
-     * Start a new implicit hinting session, or update the existing hint list. 
+     * Start a new implicit hinting session, or update the existing hint list.
      * Called by the editor after handleKeyEvent, which is responsible for setting
      * the lastChar.
+     *
+     * @param {Event} event
+     * @param {Editor} editor
+     * @param {{from: Pos, to: Pos, text: Array, origin: string}} changeList
      */
-    function handleChange(editor, changeList) {
+    function _handleChange(event, editor, changeList) {
         if (lastChar && editor === keyDownEditor) {
             keyDownEditor = null;
             if (_inSession(editor)) {
                 var charToRetest = lastChar;
                 _updateHintList();
 
-                // _updateHintList() may end a hinting session and clear lastChar, but a 
-                // different provider may want to start a new session with the same character.  
+                // _updateHintList() may end a hinting session and clear lastChar, but a
+                // different provider may want to start a new session with the same character.
                 // So check whether current provider terminates the current hinting
                 // session. If so, then restore lastChar and restart a new session.
                 if (!_inSession(editor)) {
@@ -618,9 +623,26 @@ define(function (require, exports, module) {
         return hintList;
     }
 
+    function activeEditorChangeHandler(event, current, previous) {
+        if (current) {
+            $(current).on("editorChange", _handleChange);
+            $(current).on("keyEvent", _handleKeyEvent);
+        }
+        
+        if (previous) {
+            //Removing all old Handlers
+            $(previous).off("editorChange", _handleChange);
+            $(previous).off("keyEvent", _handleKeyEvent);
+        }
+    }
+    
+    activeEditorChangeHandler(null, EditorManager.getActiveEditor(), null);
+    
+    $(EditorManager).on("activeEditorChange", activeEditorChangeHandler);
+    
     // Dismiss code hints before executing any command since the command
-    // may make the current hinting session irrevalent after execution. 
-    // For example, when the user hits Ctrl+K to open Quick Doc, it is 
+    // may make the current hinting session irrevalent after execution.
+    // For example, when the user hits Ctrl+K to open Quick Doc, it is
     // pointless to keep the hint list since the user wants to view the Quick Doc.
     $(CommandManager).on("beforeExecuteCommand", _endSession);
 
@@ -631,8 +653,6 @@ define(function (require, exports, module) {
 
     // Define public API
     exports.isOpen                  = isOpen;
-    exports.handleKeyEvent          = handleKeyEvent;
-    exports.handleChange            = handleChange;
     exports.registerHintProvider    = registerHintProvider;
     exports.hasValidExclusion       = hasValidExclusion;
     exports.setInsertHintOnTab      = setInsertHintOnTab;

src/editor/Editor.js

@@ -64,8 +64,7 @@
 define(function (require, exports, module) {
     "use strict";
 
-    var CodeHintManager    = require("editor/CodeHintManager"),
-        Commands           = require("command/Commands"),
+    var Commands           = require("command/Commands"),
         CommandManager     = require("command/CommandManager"),
         Menus              = require("command/Menus"),
         PerfUtils          = require("utils/PerfUtils"),
@@ -269,9 +268,6 @@ define(function (require, exports, module) {
 
     function _handleKeyEvents(jqEvent, editor, event) {
         _checkElectricChars(jqEvent, editor, event);
-
-        // Pass the key event to the code hint manager. It may call preventDefault() on the event.
-        CodeHintManager.handleKeyEvent(editor, event);
     }
 
     /**
@@ -536,7 +532,7 @@ define(function (require, exports, module) {
                 return;
             }
         }
-        
+
         // Apply text changes to CodeMirror editor
         var cm = this._codeMirror;
         cm.operation(function () {
@@ -597,13 +593,18 @@ define(function (require, exports, module) {
         // note: this change might have been a real edit made by the user, OR this might have
         // been a change synced from another editor
 
-        CodeHintManager.handleChange(this, changeList);
+        // The "editorChange" event is mostly for the use of the CodeHintManager.
+        // It differs from the normal "change" event, that it's actually publicly usable,
+        // whereas the "change" event should be listened to on the document. Also the
+        // Editor dispatches a change event before this event is dispatched, because
+        // CodeHintManager needs to hook in here when other things are already done.
+        $(this).triggerHandler("editorChange", [this, changeList]);
     };
 
     /**
      * Responds to changes in the Document's text, syncing the changes into our CodeMirror instance.
      * There are several cases where we want to ignore a Document change:
-     *  - if we're the master editor, Document changes should be ignored becuase we already have the right
+     *  - if we're the master editor, Document changes should be ignored because we already have the right
      *    text (either the change originated with us, or it has already been set into us by Document)
      *  - if we're a secondary editor, Document changes should be ignored if they were caused by us sending
      *    the document an editor change that originated with us

src/styles/brackets.less

@@ -913,10 +913,10 @@ a, img {
         }
     }
 
-    .navigator {    
-        display: none;        
-        button {    
-            margin: 2px 1px 3px;   
+    .navigator {
+        display: none;
+        button {
+            margin: 2px 1px 3px;
         }
     }
 }