Wayland support for views. views_desktop on Wayland.

This CL depends on:
 * http://codereview.chromium.org/7457023
 * http://codereview.chromium.org/7467007
 * http://codereview.chromium.org/7473010

Wayland requires newer libraries than Ubuntu currently provides. I've created a
list of required dependencies:
https://sites.google.com/a/google.com/chrome_on_wayland/home/wayland-build-dependencies

BUG=
TEST=Built Chrome to verify that Wayland dependencies and changes don't interfere with
the usual build.

Review URL: http://codereview.chromium.org/7464027
Patch from Daniel Nicoara <dnicoara@chromium.org>.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@98453 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 112 insertions, 0 deletions

diff --git a/views/ime/input_method_wayland.cc b/views/ime/input_method_wayland.cc
new file mode 100644
index 0000000..20d3ff2
--- /dev/null
+++ b/views/ime/input_method_wayland.cc
@@ -0,0 +1,76 @@
+// 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 "views/ime/input_method_wayland.h"
+
+#include "views/widget/widget.h"
+
+namespace views {
+
+InputMethodWayland::InputMethodWayland(
+    internal::InputMethodDelegate *delegate) {
+  set_delegate(delegate);
+}
+
+void InputMethodWayland::DispatchKeyEvent(const KeyEvent& key) {
+  if (!GetTextInputClient()) {
+    DispatchKeyEventPostIME(key);
+    return;
+  }
+
+  if (key.type() == ui::ET_KEY_PRESSED) {
+    ProcessKeyPressEvent(key);
+  } else if (key.type() == ui::ET_KEY_RELEASED) {
+    DispatchKeyEventPostIME(key);
+  }
+}
+
+void InputMethodWayland::OnTextInputTypeChanged(View* view) {
+  NOTIMPLEMENTED();
+}
+
+void InputMethodWayland::OnCaretBoundsChanged(View* view) {
+  NOTIMPLEMENTED();
+}
+
+void InputMethodWayland::CancelComposition(View* view) {
+  NOTIMPLEMENTED();
+}
+
+std::string InputMethodWayland::GetInputLocale() {
+  return std::string("");
+}
+
+base::i18n::TextDirection InputMethodWayland::GetInputTextDirection() {
+  return base::i18n::UNKNOWN_DIRECTION;
+}
+
+bool InputMethodWayland::IsActive() {
+  return true;
+}
+
+//////////////////////////////////////////////////////////////////////////////
+// InputMethodWayland private
+
+void InputMethodWayland::ProcessKeyPressEvent(const KeyEvent& key) {
+  const View* old_focused_view = focused_view();
+  DispatchKeyEventPostIME(key);
+
+  // We shouldn't dispatch the character anymore if the key event caused focus
+  // change.
+  if (old_focused_view != focused_view())
+    return;
+
+  // If a key event was not filtered by |context_| or |context_simple_|, then
+  // it means the key event didn't generate any result text. For some cases,
+  // the key event may still generate a valid character, eg. a control-key
+  // event (ctrl-a, return, tab, etc.). We need to send the character to the
+  // focused text input client by calling TextInputClient::InsertChar().
+  char16 ch = key.GetCharacter();
+  TextInputClient* client = GetTextInputClient();
+  if (ch && client)
+    client->InsertChar(ch, key.flags());
+}
+
+}  // namespace views
diff --git a/views/ime/input_method_wayland.h b/views/ime/input_method_wayland.h
new file mode 100644
index 0000000..60dac30
--- /dev/null
+++ b/views/ime/input_method_wayland.h
@@ -0,0 +1,36 @@
+// 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.
+
+#ifndef VIEWS_IME_INPUT_METHOD_WAYLAND_H_
+#define VIEWS_IME_INPUT_METHOD_WAYLAND_H_
+#pragma once
+
+#include <string>
+
+#include "views/ime/input_method_base.h"
+
+namespace views {
+
+class InputMethodWayland : public InputMethodBase {
+ public:
+  explicit InputMethodWayland(internal::InputMethodDelegate *delegate);
+
+  virtual void DispatchKeyEvent(const KeyEvent& key) OVERRIDE;
+  virtual void OnTextInputTypeChanged(View* view) OVERRIDE;
+  virtual void OnCaretBoundsChanged(View* view) OVERRIDE;
+  virtual void CancelComposition(View* view) OVERRIDE;
+  virtual std::string GetInputLocale() OVERRIDE;
+  virtual base::i18n::TextDirection GetInputTextDirection() OVERRIDE;
+  virtual bool IsActive() OVERRIDE;
+
+ private:
+
+  void ProcessKeyPressEvent(const KeyEvent& key);
+
+  DISALLOW_COPY_AND_ASSIGN(InputMethodWayland);
+};
+
+}  // namespace views
+
+#endif  // VIEWS_IME_INPUT_METHOD_WAYLAND_H_