[Mac] Implement the system dictionary popup by implementing NSTextInput methods.

chrome/common/render_messages_internal.h

 // Copyright (c) 2011 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.
 
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "build/build_config.h"
@@ skipping 874 matching lines @@
 
 // Let the RenderView know its window's frame has changed.
 IPC_MESSAGE_ROUTED2(ViewMsg_WindowFrameChanged,
                     gfx::Rect /* window frame */,
                     gfx::Rect /* content view frame */)
 
 // Tell the renderer that text has been retured from plugin IME.
 IPC_MESSAGE_ROUTED2(ViewMsg_PluginImeCompositionConfirmed,
                     string16 /* text */,
                     int /* plugin_id */)
+
+// Tells the renderer to send back the character index for a point.
+IPC_MESSAGE_ROUTED1(ViewMsg_CharacterIndexForPoint,
+                    gfx::Point)
+
+// Tells the renderer to send back the rectangle for a given character range.
+IPC_MESSAGE_ROUTED2(ViewMsg_FirstRectForCharacterRange,
+                    uint /* location */,
+                    uint /* length */)
+
+// Tells the renderer to send back the text fragment in a given range.
+IPC_MESSAGE_ROUTED2(ViewMsg_StringForRange,
+                    uint /* location */,
+                    uint /* length */)
 #endif
 
 // Response message to ViewHostMsg_CreateShared/DedicatedWorker.
 // Sent when the worker has started.
 IPC_MESSAGE_ROUTED0(ViewMsg_WorkerCreated)
 
 // Tell the renderer which browser window it's being attached to.
 IPC_MESSAGE_ROUTED1(ViewMsg_UpdateBrowserWindowId,
                     int /* id of browser window */)
 
@@ skipping 741 matching lines @@
 
 #if defined(OS_MACOSX)
 IPC_MESSAGE_CONTROL1(ViewHostMsg_ClipboardFindPboardWriteStringAsync,
     string16 /* text */)
 
 // Request that the browser load a font into shared memory for us.
 IPC_SYNC_MESSAGE_CONTROL1_2(ViewHostMsg_LoadFont,
                            FontDescriptor /* font to load */,
                            uint32 /* buffer size */,
                            base::SharedMemoryHandle /* font data */)
+
+IPC_MESSAGE_ROUTED1(ViewHostMsg_GotCharacterIndexForPoint,
+                    uint)

[jam, 2011/01/21 18:51:07]

nit: convention is to have each parameter on a separate lines, and add in
comments the parameter_name

[Robert Sesek, 2011/01/21 23:40:07]

Done.

+IPC_MESSAGE_ROUTED1(ViewHostMsg_GotFirstRectForRange, gfx::Rect)
+IPC_MESSAGE_ROUTED1(ViewHostMsg_GotStringForRange,
+                    string16)
 #endif
 
 #if defined(OS_WIN)
 // Request that the given font be loaded by the browser so it's cached by the
 // OS. Please see ChildProcessHost::PreCacheFont for details.
 IPC_SYNC_MESSAGE_CONTROL1_0(ViewHostMsg_PreCacheFont,
                             LOGFONT /* font data */)
 #endif  // defined(OS_WIN)
 
 // Returns WebScreenInfo corresponding to the view.
 // TODO(shess): Provide a mapping from reply_msg->routing_id() to
 // HWND so that we can eliminate the NativeViewId parameter.
 IPC_SYNC_MESSAGE_ROUTED1_1(ViewHostMsg_GetScreenInfo,
                            gfx::NativeViewId /* view */,
                            WebKit::WebScreenInfo /* results */)
 
 // Send the tooltip text for the current mouse position to the browser.
 IPC_MESSAGE_ROUTED2(ViewHostMsg_SetTooltipText,
                     std::wstring /* tooltip text string */,
                     WebKit::WebTextDirection /* text direction hint */)
 
 // Notification that the text selection has changed.
-IPC_MESSAGE_ROUTED1(ViewHostMsg_SelectionChanged,
-                    std::string /* currently selected text */)
+IPC_MESSAGE_ROUTED3(ViewHostMsg_SelectionChanged,
+                    std::string /* currently selected text */,
+                    int /* selection range start */,
+                    int /* selection range end */)
 
 // Asks the browser to display the file chooser.  The result is returned in a
 // ViewHost_RunFileChooserResponse message.
 IPC_MESSAGE_ROUTED1(ViewHostMsg_RunFileChooser,
                     ViewHostMsg_RunFileChooser_Params)
 
 // Notification that forms have been seen that are candidates for
 // filling/submitting by the AutoFillManager.
 IPC_MESSAGE_ROUTED1(ViewHostMsg_FormsSeen,
                     std::vector<webkit_glue::FormData> /* forms */)
@@ skipping 944 matching lines @@
                      int /* request_id */,
                      PP_Flash_NetAddress /* addr */)
 
 // JavaScript related messages -----------------------------------------------
 
 // Notify the JavaScript engine in the render to change its parameters
 // while performing stress testing.
 IPC_MESSAGE_ROUTED2(ViewMsg_JavaScriptStressTestControl,
                     int /* cmd */,
                     int /* param */)