Use a real download item....

chrome/browser/cocoa/download_shelf_controller.mm

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/cocoa/download_shelf_controller.h"
 
 #include "app/l10n_util.h"
 #include "base/mac_util.h"
 #include "base/sys_string_conversions.h"
 #include "chrome/browser/browser.h"
 #import "chrome/browser/cocoa/browser_window_controller.h"
 #include "chrome/browser/cocoa/browser_window_cocoa.h"
 #include "chrome/browser/cocoa/download_item_controller.h"
 #include "chrome/browser/cocoa/download_shelf_mac.h"
 #import "chrome/browser/cocoa/download_shelf_view.h"
 #include "grit/generated_resources.h"
 
 namespace {
 
-// TODO(thakis): These are all temporary until there's a download item view.
+// Border padding of a download item.
+const int kDownloadItemBorderPadding = 3;
 
-// Border padding of a download item.
-const int kDownloadItemBorderPadding = 4;
-
-// Width of a download item.
+// Width of a download item, must match width in DownloadItem.xib.
 const int kDownloadItemWidth = 200;
 
-// Height of a download item.
-const int kDownloadItemHeight = 32;
+// Height of a download item, must match height in DownloadItem.xib.
+const int kDownloadItemHeight = 34;
 
 // Horizontal padding between two download items.
 const int kDownloadItemPadding = 10;
 
+// Duration for the open-new-leftmost-item animation, in seconds.
+const NSTimeInterval kDownloadItemOpenDuration = 0.8;
+
 }  // namespace
 
 @interface DownloadShelfController(Private)
 - (void)applyContentAreaOffset:(BOOL)apply;
 - (void)positionBar;
 - (void)showDownloadShelf:(BOOL)enable;
 @end
 
 
 @implementation DownloadShelfController
@@ skipping 18 matching lines @@
 
 - (void)awakeFromNib {
   // Initialize "Show all downloads" link.
 
   scoped_nsobject<NSMutableParagraphStyle> paragraphStyle(
       [[NSParagraphStyle defaultParagraphStyle] mutableCopy]);
   // TODO(thakis): left-align for RTL languages?
   [paragraphStyle.get() setAlignment:NSRightTextAlignment];
 
   NSDictionary* linkAttributes = [NSDictionary dictionaryWithObjectsAndKeys:
-      self, NSLinkAttributeName,
+      @"", NSLinkAttributeName,
       [NSCursor pointingHandCursor], NSCursorAttributeName,
       paragraphStyle.get(), NSParagraphStyleAttributeName,
       nil];
   NSString* text =
       base::SysWideToNSString(l10n_util::GetString(IDS_SHOW_ALL_DOWNLOADS));
   scoped_nsobject<NSAttributedString> linkText([[NSAttributedString alloc]
       initWithString:text attributes:linkAttributes]);
 
   [[showAllDownloadsLink_ textStorage] setAttributedString:linkText.get()];
   [showAllDownloadsLink_ setDelegate:self];
@@ skipping 91 matching lines @@
 
 - (void)show:(id)sender {
   [self showDownloadShelf:YES];
 }
 
 - (void)hide:(id)sender {
   [self showDownloadShelf:NO];
 }
 
 - (void)addDownloadItem:(BaseDownloadItemModel*)model {
-  // TODO(thakis): we need to delete these at some point. There's no explicit
-  // mass delete on windows, figure out where they do it.
-
   // TODO(thakis): RTL support?
   // (l10n_util::GetTextDirection() == l10n_util::RIGHT_TO_LEFT)
-  int startX = kDownloadItemBorderPadding +
-               (kDownloadItemWidth + kDownloadItemPadding) *
-               [downloadItemControllers_ count];
+  // Shift all existing items to the right
+  for (DownloadItemController* itemController in downloadItemControllers_.get()) {
+    NSRect frame = [[itemController view] frame];
+    frame.origin.x += kDownloadItemWidth + kDownloadItemPadding;
+    [[[itemController view] animator] setFrame:frame];
+  }
 
+  // Insert new item at the left
+  int startX = kDownloadItemBorderPadding;
+
+  // Start at width 0...
   NSRect position = NSMakeRect(startX, kDownloadItemBorderPadding,
-                               kDownloadItemWidth, kDownloadItemHeight);
+                               0, kDownloadItemHeight);
   scoped_nsobject<DownloadItemController> controller(
       [[DownloadItemController alloc] initWithFrame:position
                                               model:model
                                               shelf:self]);
   [downloadItemControllers_ addObject:controller.get()];
 
   [[self view] addSubview:[controller.get() view]];
+
+  // ...then animate in
+  NSRect frame = [[controller.get() view] frame];
+  frame.size.width = kDownloadItemWidth;
+
+  [NSAnimationContext beginGrouping];
+  [[NSAnimationContext currentContext] setDuration:kDownloadItemOpenDuration];
+  [[[controller.get() view] animator] setFrame:frame];
+  [NSAnimationContext endGrouping];
 }
 
 @end