ash: Add support for additional icons in apps search list.

ui/app_list/search_result_view.cc

Index: ui/app_list/search_result_view.cc
diff --git a/ui/app_list/search_result_view.cc b/ui/app_list/search_result_view.cc
index 7c71e8e9fccb6b89dad6b46e986b6e1fa6f2868c..98f7405c380280a0e9b0c030e177b07e3690064b 100644
--- a/ui/app_list/search_result_view.cc
+++ b/ui/app_list/search_result_view.cc
@@ -8,7 +8,9 @@
 #include "ui/app_list/search_result_list_view.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/font.h"
+#include "ui/gfx/image/image_skia_operations.h"
 #include "ui/gfx/render_text.h"
+#include "ui/views/controls/button/image_button.h"
 #include "ui/views/controls/image_view.h"
 
 namespace {
@@ -21,6 +23,15 @@ const int kIconViewWidth = kIconDimension + 2 * kIconPadding;
 const int kTextTrailPadding = kIconPadding;
 const int kBorderSize = 1;
 
+// Maximum dimensions of a search result's action icons.
+const int kActionIconDimension = 24;
+
+// Total space (including padding) used for each action icon's button.
+const int kActionButtonWidth = 32;
+
+// Extra margin at the right of the rightmost action icon.
+const int kActionButtonRightMargin = 8;
+
 const SkColor kBorderColor = SkColorSetARGB(0x0F, 0, 0, 0);
 
 const SkColor kDefaultTextColor = SkColorSetRGB(0x33, 0x33, 0x33);
@@ -89,10 +100,11 @@ namespace app_list {
 const char SearchResultView::kViewClassName[] = "ui/app_list/SearchResultView";
 
 SearchResultView::SearchResultView(SearchResultListView* list_view,
-                                   views::ButtonListener* listener)
-    : views::CustomButton(listener),
+                                   SearchResultViewDelegate* delegate)
+    : views::CustomButton(this),
       result_(NULL),
       list_view_(list_view),
+      delegate_(delegate),
       icon_(new IconView) {
   AddChildView(icon_);
 }
@@ -109,6 +121,7 @@ void SearchResultView::SetResult(SearchResult* result) {
     result_->AddObserver(this);
 
   OnIconChanged();
+  OnActionIconsChanged();
   UpdateTitleText();
   UpdateDetailsText();
   SchedulePaint();
@@ -155,6 +168,17 @@ void SearchResultView::Layout() {
   icon_bounds.set_width(kIconViewWidth);
   icon_bounds.Inset(kIconPadding, (rect.height() - kIconDimension) / 2);
   icon_->SetBoundsRect(icon_bounds.Intersect(rect));
+
+  size_t num_buttons = action_buttons_.size();
+  for (size_t i = 0; i < num_buttons; ++i) {
+    views::ImageButton* button = action_buttons_[i];
+    gfx::Rect button_bounds(
+        rect.right() - kActionButtonRightMargin -
+            (num_buttons - i) * kActionButtonWidth,
+        (rect.y() + rect.height() - kActionIconDimension) / 2,
+        kActionButtonWidth, kActionIconDimension);
+    button->SetBoundsRect(button_bounds);
+  }
 }
 
 void SearchResultView::OnPaint(gfx::Canvas* canvas) {
@@ -178,7 +202,10 @@ void SearchResultView::OnPaint(gfx::Canvas* canvas) {
 
   gfx::Rect text_bounds(rect);
   text_bounds.set_x(kIconViewWidth);
-  text_bounds.set_width(rect.width() - kIconViewWidth - kTextTrailPadding);
+  text_bounds.set_width(
+      rect.width() - kIconViewWidth - kTextTrailPadding -
+      action_buttons_.size() * kActionButtonWidth -
+      (!action_buttons_.empty() ? kActionButtonRightMargin : 0));
 
   if (title_text_.get() && details_text_.get()) {
     gfx::Size title_size(text_bounds.width(),
@@ -204,6 +231,22 @@ void SearchResultView::OnPaint(gfx::Canvas* canvas) {
   }
 }
 
+void SearchResultView::ButtonPressed(views::Button* sender,
+                                     const ui::Event& event) {
+  if (sender == this) {
+    delegate_->SearchResultActivated(this, event);
+    return;
+  }
+
+  for (size_t i = 0; i < action_buttons_.size(); ++i) {
+    if (sender == action_buttons_[i]) {
+      delegate_->SearchResultActionActivated(this, i, event);
+      return;
+    }
+  }
+  NOTREACHED() << "Got unexpected button press on " << sender;
+}
+
 void SearchResultView::OnIconChanged() {
   gfx::ImageSkia image(result_ ? result_->icon() : gfx::ImageSkia());
   // Note this might leave the view with an old icon. But it is needed to avoid
@@ -215,12 +258,44 @@ void SearchResultView::OnIconChanged() {
     return;
 
   // Scales down big icons but leave small ones unchanged.
-  if (image.width() > kIconDimension || image.height() > kIconDimension)
-    icon_->SetImageSize(gfx::Size(kIconDimension, kIconDimension));
-  else
+  if (image.width() > kIconDimension || image.height() > kIconDimension) {
+    image = gfx::ImageSkiaOperations::CreateResizedImage(
+        image,
+        skia::ImageOperations::RESIZE_BEST,
+        gfx::Size(kIconDimension, kIconDimension));
+  } else {
     icon_->ResetImageSize();
+  }
 
   icon_->SetImage(image);
 }
 
+void SearchResultView::OnActionIconsChanged() {
+  while (action_buttons_.size() >
+         (result_ ? result_->action_icons().size() : 0)) {
+    RemoveChildView(action_buttons_.back());
+    action_buttons_.pop_back();
+  }
+
+  if (result_) {
+    while (action_buttons_.size() < result_->action_icons().size()) {
+      views::ImageButton* button = new views::ImageButton(this);
+      button->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
+                                views::ImageButton::ALIGN_MIDDLE);
+      AddChildView(button);
+      action_buttons_.push_back(button);
+    }
+
+    const SearchResult::ActionIconSets& icons = result_->action_icons();
+    for (size_t i = 0; i < icons.size(); ++i) {
+      const SearchResult::ActionIconSet& icon = icons.at(i);
+      views::ImageButton* button = action_buttons_[i];
+      button->SetImage(views::CustomButton::BS_NORMAL, &icon.base_image);
+      button->SetImage(views::CustomButton::BS_HOT, &icon.hover_image);
+      button->SetImage(views::CustomButton::BS_PUSHED, &icon.pressed_image);
+      button->SetTooltipText(icon.tooltip_text);
+    }
+  }
+}
+
 }  // namespace app_list