Add PanelOverflowStrip to handle panel overflow.

chrome/browser/ui/panels/panel_browser_view.cc

Index: chrome/browser/ui/panels/panel_browser_view.cc
diff --git a/chrome/browser/ui/panels/panel_browser_view.cc b/chrome/browser/ui/panels/panel_browser_view.cc
index 3b217ef9b99670bb1adc9567bb1b64dec5e4bad9..6bb2108a3708f11034744c4bdcf958eca1b87cb8 100644
--- a/chrome/browser/ui/panels/panel_browser_view.cc
+++ b/chrome/browser/ui/panels/panel_browser_view.cc
@@ -9,6 +9,8 @@
 #include "chrome/browser/ui/panels/panel.h"
 #include "chrome/browser/ui/panels/panel_browser_frame_view.h"
 #include "chrome/browser/ui/panels/panel_manager.h"
+#include "chrome/browser/ui/panels/panel_overflow_strip.h"
+#include "chrome/browser/ui/panels/panel_strip.h"
 #include "chrome/browser/ui/views/frame/browser_frame.h"
 #include "chrome/browser/ui/webui/task_manager_dialog.h"
 #include "chrome/common/chrome_notification_types.h"
@@ -114,15 +116,25 @@ void PanelBrowserView::SetBounds(const gfx::Rect& bounds) {
   SetBoundsInternal(bounds, true);
 }
 
-void PanelBrowserView::SetBoundsInternal(const gfx::Rect& bounds,
+void PanelBrowserView::SetBoundsInternal(const gfx::Rect& new_bounds,
                                          bool animate) {
-  if (bounds_ == bounds)
+  if (bounds_ == new_bounds)
     return;
-  bounds_ = bounds;
+
+  // TODO(jianli): this is just a temporary hack to check if we need to show
+  // or hide the panel app icon in the taskbar. http://crbug.com/106227
+  int panel_strip_area_left =
+      panel()->manager()->panel_strip()->display_area().x();
+  bool app_icon_shown = bounds_.x() >= panel_strip_area_left;
+  bool app_icon_to_show = new_bounds.x() >= panel_strip_area_left;
+  if (app_icon_shown != app_icon_to_show)
+    ShowOrHidePanelAppIcon(app_icon_to_show);
+
+  bounds_ = new_bounds;
 
   // No animation if the panel is being dragged.
   if (!animate || mouse_dragging_state_ == DRAGGING_STARTED) {
-    ::BrowserView::SetBounds(bounds);
+    ::BrowserView::SetBounds(new_bounds);
     return;
   }
 
@@ -398,12 +410,16 @@ void PanelBrowserView::DestroyPanelBrowser() {
 }
 
 gfx::Size PanelBrowserView::IconOnlySize() const {
-  // TODO(jianli): to be implemented.
-  return gfx::Size();
+  return GetFrameView()->IconOnlySize();
 }
 
 void PanelBrowserView::EnsurePanelFullyVisible() {
-  // TODO(jianli): to be implemented.
+#if defined(OS_WIN) && !defined(USE_AURA)
+  ::SetWindowPos(GetNativeHandle(), HWND_TOP, 0, 0, 0, 0,
+                 SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
+#else
+  NOTIMPLEMENTED();
+#endif
 }
 
 PanelBrowserFrameView* PanelBrowserView::GetFrameView() const {
@@ -426,6 +442,10 @@ bool PanelBrowserView::OnTitlebarMouseDragged(const gfx::Point& location) {
   if (!mouse_pressed_)
     return false;
 
+  // Dragging is not supported for overflow panel.
+  if (panel_->expansion_state() == Panel::IN_OVERFLOW)
+    return true;
+
   gfx::Point last_mouse_location = mouse_location_;
 
   // |location| is in the view's coordinate system. Convert it to the screen
@@ -466,6 +486,12 @@ bool PanelBrowserView::OnTitlebarMouseReleased() {
   if (mouse_dragging_state_ != NO_DRAGGING)
     return true;
 
+  // If the panel is in overflow, move it to the normal strip.
+  if (panel_->expansion_state() == Panel::IN_OVERFLOW) {
+    panel_->MoveOutOfOverflow();
+    return true;
+  }
+
   // Do not minimize the panel when we just clear the attention state. This is
   // a hack to prevent the panel from being minimized when the user clicks on
   // the title-bar to clear the attention.
@@ -504,6 +530,22 @@ bool PanelBrowserView::EndDragging(bool cancelled) {
   return true;
 }
 
+void PanelBrowserView::ShowOrHidePanelAppIcon(bool show) {
+#if defined(OS_WIN) && !defined(USE_AURA)
+  gfx::NativeWindow native_window = GetNativeHandle();
+  ::ShowWindow(native_window, SW_HIDE);
+  int style = ::GetWindowLong(native_window, GWL_EXSTYLE);
+  if (show)
+    style &= (~WS_EX_TOOLWINDOW);
+  else
+    style |= WS_EX_TOOLWINDOW;
+  ::SetWindowLong(native_window, GWL_EXSTYLE, style);
+  ::ShowWindow(native_window, SW_SHOWNA);
+#else
+  NOTIMPLEMENTED();
+#endif
+}
+
 // NativePanelTesting implementation.
 class NativePanelTestingWin : public NativePanelTesting {
  public: