Adds SendMessage to TransitionTypes.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/131052

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@18761 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 30 insertions, 0 deletions

diff --git a/chrome/browser/views/tabs/tab_overview_types.cc b/chrome/browser/views/tabs/tab_overview_types.cc
index ee39362..28ab42c8 100644
--- a/chrome/browser/views/tabs/tab_overview_types.cc
+++ b/chrome/browser/views/tabs/tab_overview_types.cc
@@ -89,6 +89,27 @@ bool TabOverviewTypes::SetWindowType(
                         type_to_atom_[ATOM_CHROME_WINDOW_TYPE], values);
 }
 
+void TabOverviewTypes::SendMessage(const Message& msg) {
+  XEvent e;
+  e.xclient.type = ClientMessage;
+  e.xclient.window = wm_;
+  e.xclient.message_type = type_to_atom_[ATOM_CHROME_WM_MESSAGE];
+  e.xclient.format = 32;  // 32-bit values
+  e.xclient.data.l[0] = msg.type();
+
+  // XClientMessageEvent only gives us five 32-bit items, and we're using
+  // the first one for our message type.
+  DCHECK_LE(msg.max_params(), 4);
+  for (int i = 0; i < msg.max_params(); ++i)
+    e.xclient.data.l[i+1] = msg.param(i);
+
+  XSendEvent(x11_util::GetXDisplay(),
+             wm_,
+             False,  // propagate
+             0,  // empty event mask
+             &e);
+}
+
 bool TabOverviewTypes::DecodeMessage(const GdkEventClient& event,
                                      Message* msg) {
   if (wm_message_atom_ != gdk_x11_atom_to_xatom(event.message_type))
@@ -136,4 +157,6 @@ TabOverviewTypes::TabOverviewTypes() {
   }
 
   wm_message_atom_ = type_to_atom_[ATOM_CHROME_WM_MESSAGE];
+
+  wm_ = XGetSelectionOwner(x11_util::GetXDisplay(), type_to_atom_[ATOM_WM_S0]);
 }
diff --git a/chrome/browser/views/tabs/tab_overview_types.h b/chrome/browser/views/tabs/tab_overview_types.h
index eff20e8..3f255a5 100644
--- a/chrome/browser/views/tabs/tab_overview_types.h
+++ b/chrome/browser/views/tabs/tab_overview_types.h
@@ -14,6 +14,7 @@
 #include "base/singleton.h"
 
 typedef unsigned long Atom;
+typedef unsigned long XID;
 
 // TODO(sky): move and rename.
 class TabOverviewTypes {
@@ -176,6 +177,9 @@ class TabOverviewTypes {
                      WindowType type,
                      const std::vector<int>* params);
 
+  // Sends a message to the WM.
+  void SendMessage(const Message& msg);
+
   // If |event| is a valid Message it is decoded into |msg| and true is
   // returned. If false is returned, |event| is not a valid Message.
   bool DecodeMessage(const GdkEventClient& event, Message* msg);
@@ -195,6 +199,9 @@ class TabOverviewTypes {
   // Cached value of type_to_atom_[ATOM_CHROME_WM_MESSAGE].
   Atom wm_message_atom_;
 
+  // Handle to the wm. Used for sending messages.
+  XID wm_;
+
   DISALLOW_COPY_AND_ASSIGN(TabOverviewTypes);
 };