Upstream version 9.38.198.0

[platform/framework/web/crosswalk.git] / src / ui / app_list / views / contents_switcher_view.cc

diff --git a/src/ui/app_list/views/contents_switcher_view.cc b/src/ui/app_list/views/contents_switcher_view.cc
index 9566943..4a62863 100644 (file)
--- a/src/ui/app_list/views/contents_switcher_view.cc
+++ b/src/ui/app_list/views/contents_switcher_view.cc
@@ -6,54 +6,78 @@
 
 #include "ui/app_list/app_list_constants.h"
 #include "ui/app_list/views/contents_view.h"
+#include "ui/views/background.h"
 #include "ui/views/controls/button/custom_button.h"
 #include "ui/views/controls/button/image_button.h"
 #include "ui/views/layout/box_layout.h"
+#include "ui/views/layout/fill_layout.h"
 
 namespace app_list {
 
 namespace {
 
-const int kPreferredHeight = 32;
+const int kButtonImageSize = 32;
 const int kButtonSpacing = 4;
 
+class ContentsPageIndicatorView : public views::View {
+ public:
+  ContentsPageIndicatorView() {};
+  virtual ~ContentsPageIndicatorView() {};
+
+  // Overridden from views::View:
+  virtual gfx::Size GetPreferredSize() const OVERRIDE {
+    return gfx::Size(0, kContentsSwitcherSeparatorHeight);
+  };
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ContentsPageIndicatorView);
+};
+
 }  // namespace
 
 ContentsSwitcherView::ContentsSwitcherView(ContentsView* contents_view)
-    : contents_view_(contents_view), buttons_(new views::View) {
-  AddChildView(buttons_);
-
-  buttons_->SetLayoutManager(new views::BoxLayout(
-      views::BoxLayout::kHorizontal, 0, 0, kButtonSpacing));
+    : contents_view_(contents_view) {
+  views::BoxLayout* layout = new views::BoxLayout(
+      views::BoxLayout::kHorizontal, 0, 0, kButtonSpacing);
+  layout->set_main_axis_alignment(views::BoxLayout::MAIN_AXIS_ALIGNMENT_CENTER);
+  SetLayoutManager(layout);
 }
 
 ContentsSwitcherView::~ContentsSwitcherView() {}
 
 void ContentsSwitcherView::AddSwitcherButton(int resource_id, int page_index) {
   views::ImageButton* button = new views::ImageButton(this);
+  button->SetPreferredSize(gfx::Size(kButtonImageSize, kButtonImageSize));
   if (resource_id) {
     button->SetImage(
         views::CustomButton::STATE_NORMAL,
         ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(resource_id));
   }
   button->set_tag(page_index);
-  buttons_->AddChildView(button);
-}
 
-gfx::Size ContentsSwitcherView::GetPreferredSize() const {
-  return gfx::Size(buttons_->GetPreferredSize().width(), kPreferredHeight);
-}
+  // Add an indicator for the current launcher page.
+  app_list::ContentsPageIndicatorView* indicator =
+      new app_list::ContentsPageIndicatorView();
+  indicator->set_background(
+      views::Background::CreateSolidBackground(app_list::kPagerSelectedColor));
+  indicator->SetVisible(false);
+  page_active_indicators_.push_back(indicator);
+
+  // A container view that will consume space when its child is not visible.
+  // TODO(calamity): Remove this once BoxLayout supports space-consuming
+  // invisible views.
+  views::View* indicator_container = new views::View();
+  indicator_container->SetLayoutManager(new views::FillLayout());
+  indicator_container->AddChildView(indicator);
 
-void ContentsSwitcherView::Layout() {
-  gfx::Rect rect(GetContentsBounds());
+  // View containing the indicator view and image button.
+  views::View* button_container = new views::View();
+  button_container->SetLayoutManager(
+      new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 0));
+  button_container->AddChildView(indicator_container);
+  button_container->AddChildView(button);
 
-  // Makes |buttons_| horizontally center and vertically fill.
-  gfx::Size buttons_size(buttons_->GetPreferredSize());
-  gfx::Rect buttons_bounds(rect.CenterPoint().x() - buttons_size.width() / 2,
-                           rect.y(),
-                           buttons_size.width(),
-                           rect.height());
-  buttons_->SetBoundsRect(gfx::IntersectRects(rect, buttons_bounds));
+  AddChildView(button_container);
 }
 
 void ContentsSwitcherView::ButtonPressed(views::Button* sender,
@@ -61,4 +85,36 @@ void ContentsSwitcherView::ButtonPressed(views::Button* sender,
   contents_view_->SetActivePage(sender->tag());
 }
 
+void ContentsSwitcherView::TotalPagesChanged() {
+}
+
+void ContentsSwitcherView::SelectedPageChanged(int old_selected,
+                                               int new_selected) {
+  // Makes the indicator visible when it is first drawn and when the
+  // selected page is changed.
+  int num_indicators = static_cast<int>(page_active_indicators_.size());
+  if (old_selected >= 0 && old_selected < num_indicators)
+    page_active_indicators_[old_selected]->SetVisible(false);
+
+  if (new_selected >= 0 && new_selected < num_indicators)
+    page_active_indicators_[new_selected]->SetVisible(true);
+}
+
+void ContentsSwitcherView::TransitionStarted() {
+}
+
+void ContentsSwitcherView::TransitionChanged() {
+  // Change the indicator during a launcher page transition.
+  const PaginationModel& pm = contents_view_->pagination_model();
+  int old_selected = pm.selected_page();
+  int new_selected = pm.transition().target_page;
+  if (pm.IsRevertingCurrentTransition()) {
+    // Swap the direction if the transition is reversed.
+    old_selected = pm.transition().target_page;
+    new_selected = pm.selected_page();
+  }
+
+  SelectedPageChanged(old_selected, new_selected);
+}
+
 }  // namespace app_list