[Mac] Detect control-key changes in autocomplete field.

chrome/browser/autocomplete/autocomplete_edit_view_mac.mm

 // Copyright (c) 2009 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 "chrome/browser/autocomplete/autocomplete_edit_view_mac.h"
 
 #include "base/clipboard.h"
 #include "base/string_util.h"
 #include "base/sys_string_conversions.h"
 #include "chrome/browser/autocomplete/autocomplete_edit.h"
@@ skipping 561 matching lines @@
   // OnAfterPossibleChange(), even if identical contents are pasted into the
   // text box.
   text_before_change_.clear();
 
   NSString* s = base::SysWideToNSString(text);
   [[field_ currentEditor] replaceCharactersInRange:selectedRange withString:s];
 
   OnAfterPossibleChange();
 }
 
+void AutocompleteEditViewMac::OnControlKeyChanged(bool pressed) {
+  model_->OnControlKeyChanged(pressed);
+}
+
 void AutocompleteEditViewMac::AcceptInput(
     WindowOpenDisposition disposition, bool for_drop) {
   model_->AcceptInput(disposition, for_drop);
 }
 
 void AutocompleteEditViewMac::FocusLocation() {
   [[field_ window] makeFirstResponder:field_];
   DCHECK_EQ([field_ currentEditor], [[field_ window] firstResponder]);
 }
 
@@ skipping 72 matching lines @@
   if (cmd == @selector(cancelOperation:)) {
     edit_view_->OnEscapeKeyPressed();
     return YES;
   }
 
   if (cmd == @selector(insertNewline:)) {
     edit_view_->AcceptInput(CURRENT_TAB, false);
     return YES;
   }
 
+  // When the user does Control-Enter, the existing content has "www."
+  // prepended and ".com" appended.  |model_| should already have
+  // received notification when the Control key was depressed, but it
+  // is safe to tell it twice.
+  if (cmd == @selector(insertLineBreak:)) {
+    edit_view_->OnControlKeyChanged(true);
+    edit_view_->AcceptInput(CURRENT_TAB, false);
+    return YES;
+  }
+
   // Capture the state before the operation changes the content.
   // TODO(shess): Determine if this is always redundent WRT the call
   // in -controlTextDidChange:.
   edit_view_->OnBeforePossibleChange();
   return NO;
 }
 
 - (void)controlTextDidBeginEditing:(NSNotification*)aNotification {
   edit_view_->OnWillBeginEditing();
 }
 
 - (void)controlTextDidChange:(NSNotification*)aNotification {
   // Figure out what changed and notify the model_.
   edit_view_->OnAfterPossibleChange();
 
   // Then capture the new state.
   edit_view_->OnBeforePossibleChange();
 }
 
 - (BOOL)control:(NSControl*)control textShouldEndEditing:(NSText*)fieldEditor {
   edit_view_->OnDidEndEditing();
 
   return YES;
 
   // TODO(shess): Figure out where the selection belongs.  On GTK,
   // it's set to the start of the text.
 }
 
+// AutocompleteTextField/Editor adds a delegate method which allows us
+// to intercept and handle -paste: calls.
 - (BOOL)control:(NSControl*)control textShouldPaste:(NSText*)fieldEditor {
   edit_view_->OnPaste();
 
   // Caller shouldn't also paste.
   return NO;
 }
 
 // Signal that we've lost focus when the window resigns key.
 - (void)windowDidResignKey:(NSNotification*)notification {
   edit_view_->OnDidResignKey();
 }
 
+// AutocompleteTextField adds a delegate method which allows us to
+// track -flagsChanged: calls.
+//
+// When the user types Control-Enter, the existing content has "www."
+// prepended and ".com" appended.  This calls down to
+// AutocompleteEditModel::OnControlKeyChanged() so that it can change
+// the popup to reflect this.  See autocomplete_edit.cc
+// OnControlKeyChanged() and OnAfterPossibleChange().
+- (void)control:(NSControl*)control flagsChanged:(NSEvent*)theEvent {
+  BOOL controlFlag = ([theEvent modifierFlags]&NSControlKeyMask) != 0;
+  edit_view_->OnControlKeyChanged(controlFlag);
+}
+
 @end