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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "chrome/browser/ui/views/autofill/tooltip_icon.h"
      6 
      7 #include "base/basictypes.h"
      8 #include "base/timer/timer.h"
      9 #include "chrome/browser/ui/views/autofill/info_bubble.h"
     10 #include "grit/theme_resources.h"
     11 #include "ui/accessibility/ax_view_state.h"
     12 #include "ui/base/resource/resource_bundle.h"
     13 #include "ui/views/bubble/bubble_frame_view.h"
     14 #include "ui/views/mouse_watcher_view_host.h"
     15 #include "ui/views/painter.h"
     16 
     17 namespace autofill {
     18 
     19 namespace {
     20 
     21 gfx::Insets GetPreferredInsets(const views::View* view) {
     22   gfx::Size pref_size = view->GetPreferredSize();
     23   gfx::Rect local_bounds = view->GetLocalBounds();
     24   gfx::Point origin = local_bounds.CenterPoint();
     25   origin.Offset(-pref_size.width() / 2, -pref_size.height() / 2);
     26   return gfx::Insets(origin.y(),
     27                      origin.x(),
     28                      local_bounds.bottom() - (origin.y() + pref_size.height()),
     29                      local_bounds.right() - (origin.x() + pref_size.width()));
     30 }
     31 
     32 // An info bubble with some extra positioning magic for tooltip icons.
     33 class TooltipBubble : public InfoBubble {
     34  public:
     35   TooltipBubble(views::View* anchor, const base::string16& message)
     36       : InfoBubble(anchor, message) {}
     37   virtual ~TooltipBubble() {}
     38 
     39  protected:
     40   // InfoBubble:
     41   virtual gfx::Rect GetAnchorRect() const OVERRIDE {
     42     gfx::Rect bounds = views::BubbleDelegateView::GetAnchorRect();
     43     bounds.Inset(GetPreferredInsets(anchor()));
     44     return bounds;
     45   }
     46 
     47  private:
     48   DISALLOW_COPY_AND_ASSIGN(TooltipBubble);
     49 };
     50 
     51 }  // namespace
     52 
     53 TooltipIcon::TooltipIcon(const base::string16& tooltip)
     54     : tooltip_(tooltip),
     55       mouse_inside_(false),
     56       bubble_(NULL),
     57       observer_(this) {
     58   ChangeImageTo(IDR_AUTOFILL_TOOLTIP_ICON);
     59 }
     60 
     61 TooltipIcon::~TooltipIcon() {
     62   HideBubble();
     63 }
     64 
     65 // static
     66 const char TooltipIcon::kViewClassName[] = "autofill/TooltipIcon";
     67 
     68 const char* TooltipIcon::GetClassName() const {
     69   return TooltipIcon::kViewClassName;
     70 }
     71 
     72 void TooltipIcon::OnMouseEntered(const ui::MouseEvent& event) {
     73   mouse_inside_ = true;
     74   show_timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(150), this,
     75                     &TooltipIcon::ShowBubble);
     76 }
     77 
     78 void TooltipIcon::OnMouseExited(const ui::MouseEvent& event) {
     79   show_timer_.Stop();
     80 }
     81 
     82 void TooltipIcon::OnGestureEvent(ui::GestureEvent* event) {
     83   if (event->type() == ui::ET_GESTURE_TAP) {
     84     ShowBubble();
     85     event->SetHandled();
     86   }
     87 }
     88 
     89 void TooltipIcon::GetAccessibleState(ui::AXViewState* state) {
     90   state->name = tooltip_;
     91 }
     92 
     93 void TooltipIcon::MouseMovedOutOfHost() {
     94   if (IsMouseHovered()) {
     95     mouse_watcher_->Start();
     96     return;
     97   }
     98 
     99   mouse_inside_ = false;
    100   HideBubble();
    101 }
    102 
    103 void TooltipIcon::ChangeImageTo(int idr) {
    104   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
    105   SetImage(rb.GetImageNamed(idr).ToImageSkia());
    106 }
    107 
    108 void TooltipIcon::ShowBubble() {
    109   if (bubble_)
    110     return;
    111 
    112   ChangeImageTo(IDR_AUTOFILL_TOOLTIP_ICON_H);
    113 
    114   bubble_ = new TooltipBubble(this, tooltip_);
    115   // When shown due to a gesture event, close on deactivate (i.e. don't use
    116   // "focusless").
    117   bubble_->set_can_activate(!mouse_inside_);
    118 
    119   bubble_->Show();
    120   observer_.Add(bubble_->GetWidget());
    121 
    122   if (mouse_inside_) {
    123     views::View* frame = bubble_->GetWidget()->non_client_view()->frame_view();
    124     scoped_ptr<views::MouseWatcherHost> host(
    125         new views::MouseWatcherViewHost(frame, gfx::Insets()));
    126     mouse_watcher_.reset(new views::MouseWatcher(host.release(), this));
    127     mouse_watcher_->Start();
    128   }
    129 }
    130 
    131 void TooltipIcon::HideBubble() {
    132   if (bubble_)
    133     bubble_->Hide();
    134 }
    135 
    136 void TooltipIcon::OnWidgetDestroyed(views::Widget* widget) {
    137   observer_.Remove(widget);
    138 
    139   ChangeImageTo(IDR_AUTOFILL_TOOLTIP_ICON);
    140   mouse_watcher_.reset();
    141   bubble_ = NULL;
    142 }
    143 
    144 }  // namespace autofill
    145