Implement clipboard features in views textfield.

views/controls/textfield/textfield_views_model.cc

Index: views/controls/textfield/textfield_views_model.cc
diff --git a/views/controls/textfield/textfield_views_model.cc b/views/controls/textfield/textfield_views_model.cc
index 21783ec776d500bd7b06b36858a7033b7c969e57..3c179a8b35200bff9206139caec96b549894b05e 100644
--- a/views/controls/textfield/textfield_views_model.cc
+++ b/views/controls/textfield/textfield_views_model.cc
@@ -6,10 +6,13 @@
 
 #include <algorithm>
 
+#include "app/clipboard/clipboard.h"
+#include "app/clipboard/scoped_clipboard_writer.h"
 #include "base/i18n/break_iterator.h"
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "gfx/font.h"
+#include "views/views_delegate.h"
 
 namespace views {
 
@@ -223,6 +226,42 @@ void TextfieldViewsModel::ClearSelection() {
   selection_begin_ = cursor_pos_;
 }
 
+bool TextfieldViewsModel::HandleClipboardEvents(app::KeyboardCode key_code) {

[rjkroege, 2011/01/05 15:31:22]

please remember that cut&paste is also invokable from menus, etc. I think you
need actions here (cut, paste, copy) that are invoked via the accelerator
framework for the control keys (or the menu entries)

[varunjain, 2011/01/05 16:19:31]

Done.

+  Clipboard* clipboard = views::ViewsDelegate::views_delegate->GetClipboard();
+  bool text_changed = false;
+  string16 result;
+  switch (key_code) {
+    case app::VKEY_C:
+      if (HasSelection()) {
+        ScopedClipboardWriter scw(clipboard);
+        scw.WriteText(GetSelectedText());
+      }
+      break;
+    case app::VKEY_X:
+      if (HasSelection()) {
+        ScopedClipboardWriter scw(clipboard);
+        scw.WriteText(GetSelectedText());
+        DeleteSelection();
+        text_changed = true;
+      }
+      break;
+    case app::VKEY_V:
+      clipboard->ReadText(Clipboard::BUFFER_STANDARD, &result);
+      if (!result.empty()) {
+        if (HasSelection())
+          DeleteSelection();
+        text_.insert(cursor_pos_, result);
+        cursor_pos_ += result.length();
+        ClearSelection();
+        text_changed = true;
+      }
+      break;
+    default:
+      break;
+  }
+  return text_changed;
+}
+
 bool TextfieldViewsModel::HasSelection() const {
   return selection_begin_ != cursor_pos_;
 }