Remove some platform specific stuff from views.

ui/app_list/cocoa/apps_collection_view_drag_manager.mm

Index: ui/app_list/cocoa/apps_collection_view_drag_manager.mm
diff --git a/ui/app_list/cocoa/apps_collection_view_drag_manager.mm b/ui/app_list/cocoa/apps_collection_view_drag_manager.mm
deleted file mode 100644
index 74e23c4e0ece15dce5684e467edf25aa3d3ed28b..0000000000000000000000000000000000000000
--- a/ui/app_list/cocoa/apps_collection_view_drag_manager.mm
+++ /dev/null
@@ -1,263 +0,0 @@
-// Copyright 2013 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 "ui/app_list/cocoa/apps_collection_view_drag_manager.h"
-
-#include "base/logging.h"
-#include "base/mac/foundation_util.h"
-#import "ui/app_list/cocoa/apps_grid_controller.h"
-#import "ui/app_list/cocoa/apps_grid_view_item.h"
-#import "ui/app_list/cocoa/item_drag_controller.h"
-
-namespace {
-
-// Distance cursor must travel in either x or y direction to start a drag.
-const CGFloat kDragThreshold = 5;
-
-}  // namespace
-
-@interface AppsCollectionViewDragManager ()
-
-// Returns the item index that |theEvent| would hit in the page at |pageIndex|
-// or NSNotFound if no item is hit.
-- (size_t)itemIndexForPage:(size_t)pageIndex
-              hitWithEvent:(NSEvent*)theEvent;
-
-- (void)initiateDrag:(NSEvent*)theEvent;
-- (void)updateDrag:(NSEvent*)theEvent;
-- (void)completeDrag;
-
-- (NSMenu*)menuForEvent:(NSEvent*)theEvent
-                 inPage:(NSCollectionView*)page;
-
-@end
-
-// An NSCollectionView that forwards mouse events to the factory they share.
-@interface GridCollectionView : NSCollectionView {
- @private
-  AppsCollectionViewDragManager* factory_;
-}
-
-@property(assign, nonatomic) AppsCollectionViewDragManager* factory;
-
-@end
-
-@implementation AppsCollectionViewDragManager
-
-- (id)initWithCellSize:(NSSize)cellSize
-                  rows:(size_t)rows
-               columns:(size_t)columns
-        gridController:(AppsGridController*)gridController {
-  if ((self = [super init])) {
-    cellSize_ = cellSize;
-    rows_ = rows;
-    columns_ = columns;
-    gridController_ = gridController;
-  }
-  return self;
-}
-
-- (NSCollectionView*)makePageWithFrame:(NSRect)pageFrame {
-  base::scoped_nsobject<GridCollectionView> itemCollectionView(
-      [[GridCollectionView alloc] initWithFrame:pageFrame]);
-  [itemCollectionView setFactory:self];
-  [itemCollectionView setMaxNumberOfRows:rows_];
-  [itemCollectionView setMinItemSize:cellSize_];
-  [itemCollectionView setMaxItemSize:cellSize_];
-  [itemCollectionView setSelectable:YES];
-  [itemCollectionView setFocusRingType:NSFocusRingTypeNone];
-  [itemCollectionView setBackgroundColors:
-      [NSArray arrayWithObject:[NSColor clearColor]]];
-  [itemCollectionView setDelegate:gridController_];
-
-  base::scoped_nsobject<AppsGridViewItem> itemPrototype(
-      [[AppsGridViewItem alloc] initWithSize:cellSize_]);
-  [[itemPrototype button] setTarget:gridController_];
-  [[itemPrototype button] setAction:@selector(onItemClicked:)];
-
-  [itemCollectionView setItemPrototype:itemPrototype];
-  return itemCollectionView.autorelease();
-}
-
-- (void)onMouseDownInPage:(NSCollectionView*)page
-                withEvent:(NSEvent*)theEvent {
-  size_t pageIndex = [gridController_ pageIndexForCollectionView:page];
-  itemHitIndex_ = [self itemIndexForPage:pageIndex
-                            hitWithEvent:theEvent];
-  if (itemHitIndex_ == NSNotFound)
-    return;
-
-  mouseDownLocation_ = [theEvent locationInWindow];
-  [[[gridController_ itemAtIndex:itemHitIndex_] view] mouseDown:theEvent];
-}
-
-- (void)onMouseDragged:(NSEvent*)theEvent {
-  if (itemHitIndex_ == NSNotFound)
-    return;
-
-  if (dragging_) {
-    [self updateDrag:theEvent];
-    return;
-  }
-
-  NSPoint mouseLocation = [theEvent locationInWindow];
-  CGFloat deltaX = mouseLocation.x - mouseDownLocation_.x;
-  CGFloat deltaY = mouseLocation.y - mouseDownLocation_.y;
-  if (deltaX * deltaX + deltaY * deltaY > kDragThreshold * kDragThreshold) {
-    [self initiateDrag:theEvent];
-    return;
-  }
-
-  [[[gridController_ itemAtIndex:itemHitIndex_] view] mouseDragged:theEvent];
-}
-
-- (void)onMouseUp:(NSEvent*)theEvent {
-  if (itemHitIndex_ == NSNotFound)
-    return;
-
-  if (dragging_) {
-    [self completeDrag];
-    return;
-  }
-
-  [[[gridController_ itemAtIndex:itemHitIndex_] view] mouseUp:theEvent];
-}
-
-- (size_t)itemIndexForPage:(size_t)pageIndex
-              hitWithEvent:(NSEvent*)theEvent {
-  NSCollectionView* page =
-      [gridController_ collectionViewAtPageIndex:pageIndex];
-  NSPoint pointInView = [page convertPoint:[theEvent locationInWindow]
-                                  fromView:nil];
-
-  const size_t itemsInPage = [[page content] count];
-  for (size_t indexInPage = 0; indexInPage < itemsInPage; ++indexInPage) {
-    if ([page mouse:pointInView
-             inRect:[page frameForItemAtIndex:indexInPage]]) {
-      return indexInPage + pageIndex * rows_ * columns_;
-    }
-  }
-
-  return NSNotFound;
-}
-
-- (void)initiateDrag:(NSEvent*)theEvent {
-  DCHECK_LT(itemHitIndex_, [gridController_ itemCount]);
-  dragging_ = YES;
-
-  if (!itemDragController_) {
-    itemDragController_.reset(
-        [[ItemDragController alloc] initWithGridCellSize:cellSize_]);
-    [[[gridController_ view] superview] addSubview:[itemDragController_ view]];
-  }
-
-  [itemDragController_ initiate:[gridController_ itemAtIndex:itemHitIndex_]
-              mouseDownLocation:mouseDownLocation_
-                currentLocation:[theEvent locationInWindow]
-                      timestamp:[theEvent timestamp]];
-
-  itemDragIndex_ = itemHitIndex_;
-  [self updateDrag:theEvent];
-}
-
-- (void)updateDrag:(NSEvent*)theEvent {
-  [itemDragController_ update:[theEvent locationInWindow]
-                    timestamp:[theEvent timestamp]];
-  [gridController_ maybeChangePageForPoint:[theEvent locationInWindow]];
-
-  size_t visiblePage = [gridController_ visiblePage];
-  size_t itemIndexOver = [self itemIndexForPage:visiblePage
-                                   hitWithEvent:theEvent];
-  DCHECK_NE(0u, [gridController_ itemCount]);
-  if (itemIndexOver == NSNotFound) {
-    if (visiblePage != [gridController_ pageCount] - 1)
-      return;
-
-    // If nothing was hit, but the last page is shown, move to the end.
-    itemIndexOver = [gridController_ itemCount] - 1;
-  }
-
-  if (itemDragIndex_ == itemIndexOver)
-    return;
-
-  [gridController_ moveItemInView:itemDragIndex_
-                      toItemIndex:itemIndexOver];
-  // A new item may be created when moving between pages. Ensure it is hidden.
-  [[[gridController_ itemAtIndex:itemIndexOver] button] setHidden:YES];
-  itemDragIndex_ = itemIndexOver;
-}
-
-- (void)cancelDrag {
-  if (!dragging_)
-    return;
-
-  [gridController_ moveItemInView:itemDragIndex_
-                      toItemIndex:itemHitIndex_];
-  itemDragIndex_ = itemHitIndex_;
-  [self completeDrag];
-  itemHitIndex_ = NSNotFound;  // Ignore future mouse events for this drag.
-}
-
-- (void)completeDrag {
-  DCHECK_GE(itemDragIndex_, 0u);
-  [gridController_ cancelScrollTimer];
-  AppsGridViewItem* item = [gridController_ itemAtIndex:itemDragIndex_];
-
-  // The item could still be animating in the NSCollectionView, so ask it where
-  // it would place the item.
-  NSCollectionView* pageView = base::mac::ObjCCastStrict<NSCollectionView>(
-      [[item view] superview]);
-  size_t indexInPage = itemDragIndex_ % (rows_ * columns_);
-  NSPoint targetOrigin = [[[itemDragController_ view] superview]
-      convertPoint:[pageView frameForItemAtIndex:indexInPage].origin
-          fromView:pageView];
-
-  [itemDragController_ complete:item
-                   targetOrigin:targetOrigin];
-  [gridController_ moveItemWithIndex:itemHitIndex_
-                        toModelIndex:itemDragIndex_];
-
-  dragging_ = NO;
-}
-
-- (NSMenu*)menuForEvent:(NSEvent*)theEvent
-                 inPage:(NSCollectionView*)page {
-  size_t pageIndex = [gridController_ pageIndexForCollectionView:page];
-  size_t itemIndex = [self itemIndexForPage:pageIndex
-                               hitWithEvent:theEvent];
-  if (itemIndex == NSNotFound)
-    return nil;
-
-  return [[gridController_ itemAtIndex:itemIndex] contextMenu];
-}
-
-@end
-
-@implementation GridCollectionView
-
-@synthesize factory = factory_;
-
-- (NSMenu*)menuForEvent:(NSEvent*)theEvent {
-  return [factory_ menuForEvent:theEvent
-                         inPage:self];
-}
-
-- (void)mouseDown:(NSEvent*)theEvent {
-  [factory_ onMouseDownInPage:self
-                    withEvent:theEvent];
-}
-
-- (void)mouseDragged:(NSEvent*)theEvent {
-  [factory_ onMouseDragged:theEvent];
-}
-
-- (void)mouseUp:(NSEvent*)theEvent {
-  [factory_ onMouseUp:theEvent];
-}
-
-- (BOOL)acceptsFirstResponder {
-  return NO;
-}
-
-@end