chrome/browser/download/download_shelf.cc

   1 // Copyright (c) 2012 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/download/download_shelf.h"
   6
   7 #include "base/bind.h"
   8 #include "base/callback.h"
   9 #include "base/message_loop.h"
  10 #include "chrome/browser/download/download_item_model.h"
  11 #include "chrome/browser/download/download_started_animation.h"
  12 #include "chrome/browser/platform_util.h"
  13 #include "chrome/browser/profiles/profile.h"
  14 #include "chrome/browser/ui/browser.h"
  15 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  16 #include "content/public/browser/browser_context.h"
  17 #include "content/public/browser/download_item.h"
  18 #include "content/public/browser/download_manager.h"
  19 #include "content/public/browser/web_contents.h"
  20 #include "content/public/browser/web_contents_view.h"
  21 #include "ui/base/animation/animation.h"
  22
  23 using content::DownloadItem;
  24
  25 namespace {
  26
  27 // Delay before we show a transient download.
  28 const int64 kDownloadShowDelayInSeconds = 2;
  29
  30 } // namespace
  31
  32 DownloadShelf::DownloadShelf()
  33     : should_show_on_unhide_(false),
  34       is_hidden_(false),
  35       weak_ptr_factory_(this) {
  36 }
  37
  38 DownloadShelf::~DownloadShelf() {
  39 }
  40
  41 void DownloadShelf::AddDownload(DownloadItem* download) {
  42   DCHECK(download);
  43   if (DownloadItemModel(download).ShouldRemoveFromShelfWhenComplete()) {
  44     // If we are going to remove the download from the shelf upon completion,
  45     // wait a few seconds to see if it completes quickly. If it's a small
  46     // download, then the user won't have time to interact with it.
  47     MessageLoop::current()->PostDelayedTask(
  48         FROM_HERE,
  49         base::Bind(&DownloadShelf::ShowDownloadById,
  50                    weak_ptr_factory_.GetWeakPtr(),
  51                    download->GetId()),
  52         GetTransientDownloadShowDelay());
  53   } else {
  54     ShowDownload(download);
  55   }
  56 }
  57
  58 void DownloadShelf::Show() {
  59   if (is_hidden_) {
  60     should_show_on_unhide_ = true;
  61     return;
  62   }
  63   DoShow();
  64 }
  65
  66 void DownloadShelf::Close(CloseReason reason) {
  67   if (is_hidden_) {
  68     should_show_on_unhide_ = false;
  69     return;
  70   }
  71   DoClose(reason);
  72 }
  73
  74 void DownloadShelf::Hide() {
  75   if (is_hidden_)
  76     return;
  77   is_hidden_ = true;
  78   if (IsShowing()) {
  79     should_show_on_unhide_ = true;
  80     DoClose(AUTOMATIC);
  81   }
  82 }
  83
  84 void DownloadShelf::Unhide() {
  85   if (!is_hidden_)
  86     return;
  87   is_hidden_ = false;
  88   if (should_show_on_unhide_) {
  89     should_show_on_unhide_ = false;
  90     DoShow();
  91   }
  92 }
  93
  94 base::TimeDelta DownloadShelf::GetTransientDownloadShowDelay() {
  95   return base::TimeDelta::FromSeconds(kDownloadShowDelayInSeconds);
  96 }
  97
  98 content::DownloadManager* DownloadShelf::GetDownloadManager() {
  99   DCHECK(browser());
 100   return content::BrowserContext::GetDownloadManager(browser()->profile());
 101 }
 102
 103 void DownloadShelf::ShowDownload(DownloadItem* download) {
 104   if (download->IsComplete() &&
 105       DownloadItemModel(download).ShouldRemoveFromShelfWhenComplete()) {
 106     return;
 107   }
 108
 109   if (is_hidden_)
 110     Unhide();
 111   Show();
 112   DoAddDownload(download);
 113
 114   // browser() can be NULL for tests.
 115   if (!browser())
 116     return;
 117
 118   // Show the download started animation if:
 119   // - Download started animation is enabled for this download. It is disabled
 120   //   for "Save As" downloads and extension installs, for example.
 121   // - The browser has an active visible WebContents. (browser isn't minimized,
 122   //   or running under a test etc.)
 123   // - Rich animations are enabled.
 124   content::WebContents* shelf_tab =
 125       browser()->tab_strip_model()->GetActiveWebContents();
 126   if (DownloadItemModel(download).ShouldShowDownloadStartedAnimation() &&
 127       shelf_tab &&
 128       platform_util::IsVisible(shelf_tab->GetView()->GetNativeView()) &&
 129       ui::Animation::ShouldRenderRichAnimation()) {
 130     DownloadStartedAnimation::Show(shelf_tab);
 131   }
 132 }
 133
 134 void DownloadShelf::ShowDownloadById(int32 download_id) {
 135   content::DownloadManager* download_manager = GetDownloadManager();
 136   if (!download_manager)
 137     return;
 138
 139   DownloadItem* download = download_manager->GetDownload(download_id);
 140   if (!download)
 141     return;
 142
 143   ShowDownload(download);
 144 }