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// Copyright 2012 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.
#include "chrome/browser/ui/bookmarks/bookmark_drag_drop.h"
#import <Cocoa/Cocoa.h>
#include <cmath>
#include "base/logging.h"
#include "base/mac/scoped_nsobject.h"
#include "base/message_loop/message_loop.h"
#include "base/strings/string16.h"
#include "base/strings/sys_string_conversions.h"
#include "chrome/browser/bookmarks/bookmark_model_factory.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/bookmarks/bookmark_drag_drop.h"
#import "chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller.h"
#import "chrome/browser/ui/cocoa/drag_util.h"
#include "components/bookmarks/browser/bookmark_model.h"
#include "components/bookmarks/browser/bookmark_node_data.h"
#include "ui/base/dragdrop/drag_drop_types.h"
using bookmarks::BookmarkModel;
using bookmarks::BookmarkNode;
namespace {
// Make a drag image from the drop data.
NSImage* MakeDragImage(BookmarkModel* model,
const std::vector<const BookmarkNode*>& nodes) {
if (nodes.size() == 1) {
const BookmarkNode* node = nodes[0];
const gfx::Image& favicon = model->GetFavicon(node);
return drag_util::DragImageForBookmark(
favicon.IsEmpty() ? nil : favicon.ToNSImage(),
node->GetTitle(),
bookmarks::kDefaultBookmarkWidth);
} else {
// TODO(feldstein): Do something better than this. Should have badging
// and a single drag image.
// http://crbug.com/37264
return [NSImage imageNamed:NSImageNameMultipleDocuments];
}
}
} // namespace
namespace chrome {
void DragBookmarks(Profile* profile,
const std::vector<const BookmarkNode*>& nodes,
gfx::NativeView view,
ui::DragDropTypes::DragEventSource source) {
DCHECK(!nodes.empty());
// Allow nested message loop so we get DnD events as we drag this around.
base::MessageLoop::ScopedNestableTaskAllower nestable_task_allower(
base::MessageLoop::current());
bookmarks::BookmarkNodeData drag_data(nodes);
drag_data.SetOriginatingProfilePath(profile->GetPath());
drag_data.WriteToClipboard(ui::CLIPBOARD_TYPE_DRAG);
// Synthesize an event for dragging, since we can't be sure that
// [NSApp currentEvent] will return a valid dragging event.
NSWindow* window = [view window];
NSPoint position = [window mouseLocationOutsideOfEventStream];
NSTimeInterval event_time = [[NSApp currentEvent] timestamp];
NSEvent* drag_event = [NSEvent mouseEventWithType:NSLeftMouseDragged
location:position
modifierFlags:NSLeftMouseDraggedMask
timestamp:event_time
windowNumber:[window windowNumber]
context:nil
eventNumber:0
clickCount:1
pressure:1.0];
// TODO(avi): Do better than this offset.
NSImage* drag_image =
MakeDragImage(BookmarkModelFactory::GetForBrowserContext(profile), nodes);
NSSize image_size = [drag_image size];
position.x -= std::floor(image_size.width / 2);
position.y -= std::floor(image_size.height / 5);
[window dragImage:drag_image
at:position
offset:NSZeroSize
event:drag_event
pasteboard:[NSPasteboard pasteboardWithName:NSDragPboard]
source:nil
slideBack:YES];
}
} // namespace chrome
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