1// Copyright (c) 2010 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#import "chrome/browser/ui/cocoa/bookmarks/bookmark_folder_target.h"
6
7#include "base/logging.h"
8#include "base/sys_string_conversions.h"
9#include "chrome/browser/bookmarks/bookmark_model.h"
10#import "chrome/browser/ui/cocoa/bookmarks/bookmark_bar_folder_controller.h"
11#import "chrome/browser/ui/cocoa/bookmarks/bookmark_button.h"
12#import "chrome/browser/ui/cocoa/event_utils.h"
13#import "third_party/mozilla/NSPasteboard+Utils.h"
14
15NSString* kBookmarkButtonDragType = @"ChromiumBookmarkButtonDragType";
16
17@implementation BookmarkFolderTarget
18
19- (id)initWithController:(id<BookmarkButtonControllerProtocol>)controller {
20  if ((self = [super init])) {
21    controller_ = controller;
22  }
23  return self;
24}
25
26// This IBAction is called when the user clicks (mouseUp, really) on a
27// "folder" bookmark button.  (In this context, "Click" does not
28// include right-click to open a context menu which follows a
29// different path).  Scenarios when folder X is clicked:
30//  *Predicate*        *Action*
31//  (nothing)          Open Folder X
32//  Folder X open      Close folder X
33//  Folder Y open      Close Y, open X
34//  Cmd-click          Open All with proper disposition
35//
36//  Note complication in which a click-drag engages drag and drop, not
37//  a click-to-open.  Thus the path to get here is a little twisted.
38- (IBAction)openBookmarkFolderFromButton:(id)sender {
39  DCHECK(sender);
40  // Watch out for a modifier click.  For example, command-click
41  // should open all.
42  //
43  // NOTE: we cannot use [[sender cell] mouseDownFlags] because we
44  // thwart the normal mouse click mechanism to make buttons
45  // draggable.  Thus we must use [NSApp currentEvent].
46  //
47  // Holding command while using the scroll wheel (or moving around
48  // over a bookmark folder) can confuse us.  Unless we check the
49  // event type, we are not sure if this is an "open folder" due to a
50  // hover-open or "open folder" due to a click.  It doesn't matter
51  // (both do the same thing) unless a modifier is held, since
52  // command-click should "open all" but command-move should not.
53  // WindowOpenDispositionFromNSEvent does not consider the event
54  // type; only the modifiers.  Thus the need for an extra
55  // event-type-check here.
56  DCHECK([sender bookmarkNode]->is_folder());
57  NSEvent* event = [NSApp currentEvent];
58  WindowOpenDisposition disposition =
59      event_utils::WindowOpenDispositionFromNSEvent(event);
60  if (([event type] != NSMouseEntered) &&
61      ([event type] != NSMouseMoved) &&
62      ([event type] != NSScrollWheel) &&
63      (disposition == NEW_BACKGROUND_TAB)) {
64    [controller_ closeAllBookmarkFolders];
65    [controller_ openAll:[sender bookmarkNode] disposition:disposition];
66    return;
67  }
68
69  // If click on same folder, close it and be done.
70  // Else we clicked on a different folder so more work to do.
71  if ([[controller_ folderController] parentButton] == sender) {
72    [controller_ closeBookmarkFolder:controller_];
73    return;
74  }
75
76  [controller_ addNewFolderControllerWithParentButton:sender];
77}
78
79- (void)copyBookmarkNode:(const BookmarkNode*)node
80            toPasteboard:(NSPasteboard*)pboard {
81  if (!node) {
82    NOTREACHED();
83    return;
84  }
85
86  if (node->is_folder()) {
87    // TODO(viettrungluu): I'm not sure what we should do, so just declare the
88    // "additional" types we're given for now. Maybe we want to add a list of
89    // URLs? Would we then have to recurse if there were subfolders?
90    // In the meanwhile, we *must* set it to a known state. (If this survives to
91    // a 10.6-only release, it can be replaced with |-clearContents|.)
92    [pboard declareTypes:[NSArray array] owner:nil];
93  } else {
94    const std::string spec = node->GetURL().spec();
95    NSString* url = base::SysUTF8ToNSString(spec);
96    NSString* title = base::SysUTF16ToNSString(node->GetTitle());
97    [pboard declareURLPasteboardWithAdditionalTypes:[NSArray array]
98                                              owner:nil];
99    [pboard setDataForURL:url title:title];
100  }
101}
102
103- (void)fillPasteboard:(NSPasteboard*)pboard
104       forDragOfButton:(BookmarkButton*)button {
105  if (const BookmarkNode* node = [button bookmarkNode]) {
106    // Put the bookmark information into the pasteboard, and then write our own
107    // data for |kBookmarkButtonDragType|.
108    [self copyBookmarkNode:node toPasteboard:pboard];
109    [pboard addTypes:[NSArray arrayWithObject:kBookmarkButtonDragType]
110               owner:nil];
111    [pboard setData:[NSData dataWithBytes:&button length:sizeof(button)]
112            forType:kBookmarkButtonDragType];
113  } else {
114    NOTREACHED();
115  }
116}
117
118@end
119